net/wireless/nl80211.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * This is the new netlink-based wireless configuration interface.
   4  *
   5  * Copyright 2006-2010  Johannes Berg <johannes@sipsolutions.net>
   6  * Copyright 2013-2014  Intel Mobile Communications GmbH
   7  * Copyright 2015-2017  Intel Deutschland GmbH
   8  * Copyright (C) 2018-2019 Intel Corporation
   9  */
  10
  11 #include <linux/if.h>
  12 #include <linux/module.h>
  13 #include <linux/err.h>
  14 #include <linux/slab.h>
  15 #include <linux/list.h>
  16 #include <linux/if_ether.h>
  17 #include <linux/ieee80211.h>
  18 #include <linux/nl80211.h>
  19 #include <linux/rtnetlink.h>
  20 #include <linux/netlink.h>
  21 #include <linux/nospec.h>
  22 #include <linux/etherdevice.h>
  23 #include <linux/if_vlan.h>
  24 #include <net/net_namespace.h>
  25 #include <net/genetlink.h>
  26 #include <net/cfg80211.h>
  27 #include <net/sock.h>
  28 #include <net/inet_connection_sock.h>
  29 #include "core.h"
  30 #include "nl80211.h"
  31 #include "reg.h"
  32 #include "rdev-ops.h"
  33
  34 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
  35                                    struct genl_info *info,
  36                                    struct cfg80211_crypto_settings *settings,
  37                                    int cipher_limit);
  38
  39 /* the netlink family */
  40 static struct genl_family nl80211_fam;
  41
  42 /* multicast groups */
  43 enum nl80211_multicast_groups {
  44         NL80211_MCGRP_CONFIG,
  45         NL80211_MCGRP_SCAN,
  46         NL80211_MCGRP_REGULATORY,
  47         NL80211_MCGRP_MLME,
  48         NL80211_MCGRP_VENDOR,
  49         NL80211_MCGRP_NAN,
  50         NL80211_MCGRP_TESTMODE /* keep last - ifdef! */
  51 };
  52
  53 static const struct genl_multicast_group nl80211_mcgrps[] = {
  54         [NL80211_MCGRP_CONFIG] = { .name = NL80211_MULTICAST_GROUP_CONFIG },
  55         [NL80211_MCGRP_SCAN] = { .name = NL80211_MULTICAST_GROUP_SCAN },
  56         [NL80211_MCGRP_REGULATORY] = { .name = NL80211_MULTICAST_GROUP_REG },
  57         [NL80211_MCGRP_MLME] = { .name = NL80211_MULTICAST_GROUP_MLME },
  58         [NL80211_MCGRP_VENDOR] = { .name = NL80211_MULTICAST_GROUP_VENDOR },
  59         [NL80211_MCGRP_NAN] = { .name = NL80211_MULTICAST_GROUP_NAN },
  60 #ifdef CONFIG_NL80211_TESTMODE
  61         [NL80211_MCGRP_TESTMODE] = { .name = NL80211_MULTICAST_GROUP_TESTMODE }
  62 #endif
  63 };
  64
  65 /* returns ERR_PTR values */
  66 static struct wireless_dev *
  67 __cfg80211_wdev_from_attrs(struct net *netns, struct nlattr **attrs)
  68 {
  69         struct cfg80211_registered_device *rdev;
  70         struct wireless_dev *result = NULL;
  71         bool have_ifidx = attrs[NL80211_ATTR_IFINDEX];
  72         bool have_wdev_id = attrs[NL80211_ATTR_WDEV];
  73         u64 wdev_id;
  74         int wiphy_idx = -1;
  75         int ifidx = -1;
  76
  77         ASSERT_RTNL();
  78
  79         if (!have_ifidx && !have_wdev_id)
  80                 return ERR_PTR(-EINVAL);
  81
  82         if (have_ifidx)
  83                 ifidx = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
  84         if (have_wdev_id) {
  85                 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
  86                 wiphy_idx = wdev_id >> 32;
  87         }
  88
  89         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
  90                 struct wireless_dev *wdev;
  91
  92                 if (wiphy_net(&rdev->wiphy) != netns)
  93                         continue;
  94
  95                 if (have_wdev_id && rdev->wiphy_idx != wiphy_idx)
  96                         continue;
  97
  98                 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
  99                         if (have_ifidx && wdev->netdev &&
 100                             wdev->netdev->ifindex == ifidx) {
 101                                 result = wdev;
 102                                 break;
 103                         }
 104                         if (have_wdev_id && wdev->identifier == (u32)wdev_id) {
 105                                 result = wdev;
 106                                 break;
 107                         }
 108                 }
 109
 110                 if (result)
 111                         break;
 112         }
 113
 114         if (result)
 115                 return result;
 116         return ERR_PTR(-ENODEV);
 117 }
 118
 119 static struct cfg80211_registered_device *
 120 __cfg80211_rdev_from_attrs(struct net *netns, struct nlattr **attrs)
 121 {
 122         struct cfg80211_registered_device *rdev = NULL, *tmp;
 123         struct net_device *netdev;
 124
 125         ASSERT_RTNL();
 126
 127         if (!attrs[NL80211_ATTR_WIPHY] &&
 128             !attrs[NL80211_ATTR_IFINDEX] &&
 129             !attrs[NL80211_ATTR_WDEV])
 130                 return ERR_PTR(-EINVAL);
 131
 132         if (attrs[NL80211_ATTR_WIPHY])
 133                 rdev = cfg80211_rdev_by_wiphy_idx(
 134                                 nla_get_u32(attrs[NL80211_ATTR_WIPHY]));
 135
 136         if (attrs[NL80211_ATTR_WDEV]) {
 137                 u64 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
 138                 struct wireless_dev *wdev;
 139                 bool found = false;
 140
 141                 tmp = cfg80211_rdev_by_wiphy_idx(wdev_id >> 32);
 142                 if (tmp) {
 143                         /* make sure wdev exists */
 144                         list_for_each_entry(wdev, &tmp->wiphy.wdev_list, list) {
 145                                 if (wdev->identifier != (u32)wdev_id)
 146                                         continue;
 147                                 found = true;
 148                                 break;
 149                         }
 150
 151                         if (!found)
 152                                 tmp = NULL;
 153
 154                         if (rdev && tmp != rdev)
 155                                 return ERR_PTR(-EINVAL);
 156                         rdev = tmp;
 157                 }
 158         }
 159
 160         if (attrs[NL80211_ATTR_IFINDEX]) {
 161                 int ifindex = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
 162
 163                 netdev = __dev_get_by_index(netns, ifindex);
 164                 if (netdev) {
 165                         if (netdev->ieee80211_ptr)
 166                                 tmp = wiphy_to_rdev(
 167                                         netdev->ieee80211_ptr->wiphy);
 168                         else
 169                                 tmp = NULL;
 170
 171                         /* not wireless device -- return error */
 172                         if (!tmp)
 173                                 return ERR_PTR(-EINVAL);
 174
 175                         /* mismatch -- return error */
 176                         if (rdev && tmp != rdev)
 177                                 return ERR_PTR(-EINVAL);
 178
 179                         rdev = tmp;
 180                 }
 181         }
 182
 183         if (!rdev)
 184                 return ERR_PTR(-ENODEV);
 185
 186         if (netns != wiphy_net(&rdev->wiphy))
 187                 return ERR_PTR(-ENODEV);
 188
 189         return rdev;
 190 }
 191
 192 /*
 193  * This function returns a pointer to the driver
 194  * that the genl_info item that is passed refers to.
 195  *
 196  * The result of this can be a PTR_ERR and hence must
 197  * be checked with IS_ERR() for errors.
 198  */
 199 static struct cfg80211_registered_device *
 200 cfg80211_get_dev_from_info(struct net *netns, struct genl_info *info)
 201 {
 202         return __cfg80211_rdev_from_attrs(netns, info->attrs);
 203 }
 204
 205 static int validate_beacon_head(const struct nlattr *attr,
 206                                 struct netlink_ext_ack *extack)
 207 {
 208         const u8 *data = nla_data(attr);
 209         unsigned int len = nla_len(attr);
 210         const struct element *elem;
 211         const struct ieee80211_mgmt *mgmt = (void *)data;
 212         unsigned int fixedlen = offsetof(struct ieee80211_mgmt,
 213                                          u.beacon.variable);
 214
 215         if (len < fixedlen)
 216                 goto err;
 217
 218         if (ieee80211_hdrlen(mgmt->frame_control) !=
 219             offsetof(struct ieee80211_mgmt, u.beacon))
 220                 goto err;
 221
 222         data += fixedlen;
 223         len -= fixedlen;
 224
 225         for_each_element(elem, data, len) {
 226                 /* nothing */
 227         }
 228
 229         if (for_each_element_completed(elem, data, len))
 230                 return 0;
 231
 232 err:
 233         NL_SET_ERR_MSG_ATTR(extack, attr, "malformed beacon head");
 234         return -EINVAL;
 235 }
 236
 237 static int validate_ie_attr(const struct nlattr *attr,
 238                             struct netlink_ext_ack *extack)
 239 {
 240         const u8 *data = nla_data(attr);
 241         unsigned int len = nla_len(attr);
 242         const struct element *elem;
 243
 244         for_each_element(elem, data, len) {
 245                 /* nothing */
 246         }
 247
 248         if (for_each_element_completed(elem, data, len))
 249                 return 0;
 250
 251         NL_SET_ERR_MSG_ATTR(extack, attr, "malformed information elements");
 252         return -EINVAL;
 253 }
 254
 255 /* policy for the attributes */
 256 static const struct nla_policy
 257 nl80211_ftm_responder_policy[NL80211_FTM_RESP_ATTR_MAX + 1] = {
 258         [NL80211_FTM_RESP_ATTR_ENABLED] = { .type = NLA_FLAG, },
 259         [NL80211_FTM_RESP_ATTR_LCI] = { .type = NLA_BINARY,
 260                                         .len = U8_MAX },
 261         [NL80211_FTM_RESP_ATTR_CIVICLOC] = { .type = NLA_BINARY,
 262                                              .len = U8_MAX },
 263 };
 264
 265 static const struct nla_policy
 266 nl80211_pmsr_ftm_req_attr_policy[NL80211_PMSR_FTM_REQ_ATTR_MAX + 1] = {
 267         [NL80211_PMSR_FTM_REQ_ATTR_ASAP] = { .type = NLA_FLAG },
 268         [NL80211_PMSR_FTM_REQ_ATTR_PREAMBLE] = { .type = NLA_U32 },
 269         [NL80211_PMSR_FTM_REQ_ATTR_NUM_BURSTS_EXP] =
 270                 NLA_POLICY_MAX(NLA_U8, 15),
 271         [NL80211_PMSR_FTM_REQ_ATTR_BURST_PERIOD] = { .type = NLA_U16 },
 272         [NL80211_PMSR_FTM_REQ_ATTR_BURST_DURATION] =
 273                 NLA_POLICY_MAX(NLA_U8, 15),
 274         [NL80211_PMSR_FTM_REQ_ATTR_FTMS_PER_BURST] =
 275                 NLA_POLICY_MAX(NLA_U8, 31),
 276         [NL80211_PMSR_FTM_REQ_ATTR_NUM_FTMR_RETRIES] = { .type = NLA_U8 },
 277         [NL80211_PMSR_FTM_REQ_ATTR_REQUEST_LCI] = { .type = NLA_FLAG },
 278         [NL80211_PMSR_FTM_REQ_ATTR_REQUEST_CIVICLOC] = { .type = NLA_FLAG },
 279 };
 280
 281 static const struct nla_policy
 282 nl80211_pmsr_req_data_policy[NL80211_PMSR_TYPE_MAX + 1] = {
 283         [NL80211_PMSR_TYPE_FTM] =
 284                 NLA_POLICY_NESTED(nl80211_pmsr_ftm_req_attr_policy),
 285 };
 286
 287 static const struct nla_policy
 288 nl80211_pmsr_req_attr_policy[NL80211_PMSR_REQ_ATTR_MAX + 1] = {
 289         [NL80211_PMSR_REQ_ATTR_DATA] =
 290                 NLA_POLICY_NESTED(nl80211_pmsr_req_data_policy),
 291         [NL80211_PMSR_REQ_ATTR_GET_AP_TSF] = { .type = NLA_FLAG },
 292 };
 293
 294 static const struct nla_policy
 295 nl80211_psmr_peer_attr_policy[NL80211_PMSR_PEER_ATTR_MAX + 1] = {
 296         [NL80211_PMSR_PEER_ATTR_ADDR] = NLA_POLICY_ETH_ADDR,
 297         /*
 298          * we could specify this again to be the top-level policy,
 299          * but that would open us up to recursion problems ...
 300          */
 301         [NL80211_PMSR_PEER_ATTR_CHAN] = { .type = NLA_NESTED },
 302         [NL80211_PMSR_PEER_ATTR_REQ] =
 303                 NLA_POLICY_NESTED(nl80211_pmsr_req_attr_policy),
 304         [NL80211_PMSR_PEER_ATTR_RESP] = { .type = NLA_REJECT },
 305 };
 306
 307 static const struct nla_policy
 308 nl80211_pmsr_attr_policy[NL80211_PMSR_ATTR_MAX + 1] = {
 309         [NL80211_PMSR_ATTR_MAX_PEERS] = { .type = NLA_REJECT },
 310         [NL80211_PMSR_ATTR_REPORT_AP_TSF] = { .type = NLA_REJECT },
 311         [NL80211_PMSR_ATTR_RANDOMIZE_MAC_ADDR] = { .type = NLA_REJECT },
 312         [NL80211_PMSR_ATTR_TYPE_CAPA] = { .type = NLA_REJECT },
 313         [NL80211_PMSR_ATTR_PEERS] =
 314                 NLA_POLICY_NESTED_ARRAY(nl80211_psmr_peer_attr_policy),
 315 };
 316
 317 static const struct nla_policy
 318 he_obss_pd_policy[NL80211_HE_OBSS_PD_ATTR_MAX + 1] = {
 319         [NL80211_HE_OBSS_PD_ATTR_MIN_OFFSET] =
 320                 NLA_POLICY_RANGE(NLA_U8, 1, 20),
 321         [NL80211_HE_OBSS_PD_ATTR_MAX_OFFSET] =
 322                 NLA_POLICY_RANGE(NLA_U8, 1, 20),
 323 };
 324
 325 static const struct nla_policy
 326 he_bss_color_policy[NL80211_HE_BSS_COLOR_ATTR_MAX + 1] = {
 327         [NL80211_HE_BSS_COLOR_ATTR_COLOR] = NLA_POLICY_RANGE(NLA_U8, 1, 63),
 328         [NL80211_HE_BSS_COLOR_ATTR_DISABLED] = { .type = NLA_FLAG },
 329         [NL80211_HE_BSS_COLOR_ATTR_PARTIAL] = { .type = NLA_FLAG },
 330 };
 331
 332 static const struct nla_policy
 333 nl80211_tid_config_attr_policy[NL80211_TID_CONFIG_ATTR_MAX + 1] = {
 334         [NL80211_TID_CONFIG_ATTR_VIF_SUPP] = { .type = NLA_U64 },
 335         [NL80211_TID_CONFIG_ATTR_PEER_SUPP] = { .type = NLA_U64 },
 336         [NL80211_TID_CONFIG_ATTR_OVERRIDE] = { .type = NLA_FLAG },
 337         [NL80211_TID_CONFIG_ATTR_TIDS] = NLA_POLICY_RANGE(NLA_U16, 1, 0xff),
 338         [NL80211_TID_CONFIG_ATTR_NOACK] =
 339                         NLA_POLICY_MAX(NLA_U8, NL80211_TID_CONFIG_DISABLE),
 340         [NL80211_TID_CONFIG_ATTR_RETRY_SHORT] = NLA_POLICY_MIN(NLA_U8, 1),
 341         [NL80211_TID_CONFIG_ATTR_RETRY_LONG] = NLA_POLICY_MIN(NLA_U8, 1),
 342         [NL80211_TID_CONFIG_ATTR_AMPDU_CTRL] =
 343                         NLA_POLICY_MAX(NLA_U8, NL80211_TID_CONFIG_DISABLE),
 344         [NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL] =
 345                         NLA_POLICY_MAX(NLA_U8, NL80211_TID_CONFIG_DISABLE),
 346 };
 347
 348 const struct nla_policy nl80211_policy[NUM_NL80211_ATTR] = {
 349         [0] = { .strict_start_type = NL80211_ATTR_HE_OBSS_PD },
 350         [NL80211_ATTR_WIPHY] = { .type = NLA_U32 },
 351         [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING,
 352                                       .len = 20-1 },
 353         [NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED },
 354
 355         [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 },
 356         [NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 },
 357         [NL80211_ATTR_WIPHY_EDMG_CHANNELS] = NLA_POLICY_RANGE(NLA_U8,
 358                                                 NL80211_EDMG_CHANNELS_MIN,
 359                                                 NL80211_EDMG_CHANNELS_MAX),
 360         [NL80211_ATTR_WIPHY_EDMG_BW_CONFIG] = NLA_POLICY_RANGE(NLA_U8,
 361                                                 NL80211_EDMG_BW_CONFIG_MIN,
 362                                                 NL80211_EDMG_BW_CONFIG_MAX),
 363
 364         [NL80211_ATTR_CHANNEL_WIDTH] = { .type = NLA_U32 },
 365         [NL80211_ATTR_CENTER_FREQ1] = { .type = NLA_U32 },
 366         [NL80211_ATTR_CENTER_FREQ2] = { .type = NLA_U32 },
 367
 368         [NL80211_ATTR_WIPHY_RETRY_SHORT] = NLA_POLICY_MIN(NLA_U8, 1),
 369         [NL80211_ATTR_WIPHY_RETRY_LONG] = NLA_POLICY_MIN(NLA_U8, 1),
 370         [NL80211_ATTR_WIPHY_FRAG_THRESHOLD] = { .type = NLA_U32 },
 371         [NL80211_ATTR_WIPHY_RTS_THRESHOLD] = { .type = NLA_U32 },
 372         [NL80211_ATTR_WIPHY_COVERAGE_CLASS] = { .type = NLA_U8 },
 373         [NL80211_ATTR_WIPHY_DYN_ACK] = { .type = NLA_FLAG },
 374
 375         [NL80211_ATTR_IFTYPE] = NLA_POLICY_MAX(NLA_U32, NL80211_IFTYPE_MAX),
 376         [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 },
 377         [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 },
 378
 379         [NL80211_ATTR_MAC] = { .type = NLA_EXACT_LEN_WARN, .len = ETH_ALEN },
 380         [NL80211_ATTR_PREV_BSSID] = {
 381                 .type = NLA_EXACT_LEN_WARN,
 382                 .len = ETH_ALEN
 383         },
 384
 385         [NL80211_ATTR_KEY] = { .type = NLA_NESTED, },
 386         [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY,
 387                                     .len = WLAN_MAX_KEY_LEN },
 388         [NL80211_ATTR_KEY_IDX] = NLA_POLICY_MAX(NLA_U8, 7),
 389         [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 },
 390         [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG },
 391         [NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
 392         [NL80211_ATTR_KEY_TYPE] =
 393                 NLA_POLICY_MAX(NLA_U32, NUM_NL80211_KEYTYPES),
 394
 395         [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 },
 396         [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 },
 397         [NL80211_ATTR_BEACON_HEAD] =
 398                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_beacon_head,
 399                                        IEEE80211_MAX_DATA_LEN),
 400         [NL80211_ATTR_BEACON_TAIL] =
 401                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
 402                                        IEEE80211_MAX_DATA_LEN),
 403         [NL80211_ATTR_STA_AID] =
 404                 NLA_POLICY_RANGE(NLA_U16, 1, IEEE80211_MAX_AID),
 405         [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED },
 406         [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 },
 407         [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY,
 408                                                .len = NL80211_MAX_SUPP_RATES },
 409         [NL80211_ATTR_STA_PLINK_ACTION] =
 410                 NLA_POLICY_MAX(NLA_U8, NUM_NL80211_PLINK_ACTIONS - 1),
 411         [NL80211_ATTR_STA_TX_POWER_SETTING] =
 412                 NLA_POLICY_RANGE(NLA_U8,
 413                                  NL80211_TX_POWER_AUTOMATIC,
 414                                  NL80211_TX_POWER_FIXED),
 415         [NL80211_ATTR_STA_TX_POWER] = { .type = NLA_S16 },
 416         [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 },
 417         [NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ },
 418         [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY,
 419                                    .len = IEEE80211_MAX_MESH_ID_LEN },
 420         [NL80211_ATTR_MPATH_NEXT_HOP] = NLA_POLICY_ETH_ADDR_COMPAT,
 421
 422         [NL80211_ATTR_REG_ALPHA2] = { .type = NLA_STRING, .len = 2 },
 423         [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED },
 424
 425         [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 },
 426         [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 },
 427         [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 },
 428         [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY,
 429                                            .len = NL80211_MAX_SUPP_RATES },
 430         [NL80211_ATTR_BSS_HT_OPMODE] = { .type = NLA_U16 },
 431
 432         [NL80211_ATTR_MESH_CONFIG] = { .type = NLA_NESTED },
 433         [NL80211_ATTR_SUPPORT_MESH_AUTH] = { .type = NLA_FLAG },
 434
 435         [NL80211_ATTR_HT_CAPABILITY] = {
 436                 .type = NLA_EXACT_LEN_WARN,
 437                 .len = NL80211_HT_CAPABILITY_LEN
 438         },
 439
 440         [NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 },
 441         [NL80211_ATTR_IE] = NLA_POLICY_VALIDATE_FN(NLA_BINARY,
 442                                                    validate_ie_attr,
 443                                                    IEEE80211_MAX_DATA_LEN),
 444         [NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED },
 445         [NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED },
 446
 447         [NL80211_ATTR_SSID] = { .type = NLA_BINARY,
 448                                 .len = IEEE80211_MAX_SSID_LEN },
 449         [NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 },
 450         [NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 },
 451         [NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG },
 452         [NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG },
 453         [NL80211_ATTR_USE_MFP] = NLA_POLICY_RANGE(NLA_U32,
 454                                                   NL80211_MFP_NO,
 455                                                   NL80211_MFP_OPTIONAL),
 456         [NL80211_ATTR_STA_FLAGS2] = {
 457                 .len = sizeof(struct nl80211_sta_flag_update),
 458         },
 459         [NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG },
 460         [NL80211_ATTR_CONTROL_PORT_ETHERTYPE] = { .type = NLA_U16 },
 461         [NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT] = { .type = NLA_FLAG },
 462         [NL80211_ATTR_CONTROL_PORT_OVER_NL80211] = { .type = NLA_FLAG },
 463         [NL80211_ATTR_PRIVACY] = { .type = NLA_FLAG },
 464         [NL80211_ATTR_STATUS_CODE] = { .type = NLA_U16 },
 465         [NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 },
 466         [NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 },
 467         [NL80211_ATTR_PID] = { .type = NLA_U32 },
 468         [NL80211_ATTR_4ADDR] = { .type = NLA_U8 },
 469         [NL80211_ATTR_PMKID] = {
 470                 .type = NLA_EXACT_LEN_WARN,
 471                 .len = WLAN_PMKID_LEN
 472         },
 473         [NL80211_ATTR_DURATION] = { .type = NLA_U32 },
 474         [NL80211_ATTR_COOKIE] = { .type = NLA_U64 },
 475         [NL80211_ATTR_TX_RATES] = { .type = NLA_NESTED },
 476         [NL80211_ATTR_FRAME] = { .type = NLA_BINARY,
 477                                  .len = IEEE80211_MAX_DATA_LEN },
 478         [NL80211_ATTR_FRAME_MATCH] = { .type = NLA_BINARY, },
 479         [NL80211_ATTR_PS_STATE] = NLA_POLICY_RANGE(NLA_U32,
 480                                                    NL80211_PS_DISABLED,
 481                                                    NL80211_PS_ENABLED),
 482         [NL80211_ATTR_CQM] = { .type = NLA_NESTED, },
 483         [NL80211_ATTR_LOCAL_STATE_CHANGE] = { .type = NLA_FLAG },
 484         [NL80211_ATTR_AP_ISOLATE] = { .type = NLA_U8 },
 485         [NL80211_ATTR_WIPHY_TX_POWER_SETTING] = { .type = NLA_U32 },
 486         [NL80211_ATTR_WIPHY_TX_POWER_LEVEL] = { .type = NLA_U32 },
 487         [NL80211_ATTR_FRAME_TYPE] = { .type = NLA_U16 },
 488         [NL80211_ATTR_WIPHY_ANTENNA_TX] = { .type = NLA_U32 },
 489         [NL80211_ATTR_WIPHY_ANTENNA_RX] = { .type = NLA_U32 },
 490         [NL80211_ATTR_MCAST_RATE] = { .type = NLA_U32 },
 491         [NL80211_ATTR_OFFCHANNEL_TX_OK] = { .type = NLA_FLAG },
 492         [NL80211_ATTR_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
 493         [NL80211_ATTR_WOWLAN_TRIGGERS] = { .type = NLA_NESTED },
 494         [NL80211_ATTR_STA_PLINK_STATE] =
 495                 NLA_POLICY_MAX(NLA_U8, NUM_NL80211_PLINK_STATES - 1),
 496         [NL80211_ATTR_MESH_PEER_AID] =
 497                 NLA_POLICY_RANGE(NLA_U16, 1, IEEE80211_MAX_AID),
 498         [NL80211_ATTR_SCHED_SCAN_INTERVAL] = { .type = NLA_U32 },
 499         [NL80211_ATTR_REKEY_DATA] = { .type = NLA_NESTED },
 500         [NL80211_ATTR_SCAN_SUPP_RATES] = { .type = NLA_NESTED },
 501         [NL80211_ATTR_HIDDEN_SSID] =
 502                 NLA_POLICY_RANGE(NLA_U32,
 503                                  NL80211_HIDDEN_SSID_NOT_IN_USE,
 504                                  NL80211_HIDDEN_SSID_ZERO_CONTENTS),
 505         [NL80211_ATTR_IE_PROBE_RESP] =
 506                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
 507                                        IEEE80211_MAX_DATA_LEN),
 508         [NL80211_ATTR_IE_ASSOC_RESP] =
 509                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
 510                                        IEEE80211_MAX_DATA_LEN),
 511         [NL80211_ATTR_ROAM_SUPPORT] = { .type = NLA_FLAG },
 512         [NL80211_ATTR_SCHED_SCAN_MATCH] = { .type = NLA_NESTED },
 513         [NL80211_ATTR_TX_NO_CCK_RATE] = { .type = NLA_FLAG },
 514         [NL80211_ATTR_TDLS_ACTION] = { .type = NLA_U8 },
 515         [NL80211_ATTR_TDLS_DIALOG_TOKEN] = { .type = NLA_U8 },
 516         [NL80211_ATTR_TDLS_OPERATION] = { .type = NLA_U8 },
 517         [NL80211_ATTR_TDLS_SUPPORT] = { .type = NLA_FLAG },
 518         [NL80211_ATTR_TDLS_EXTERNAL_SETUP] = { .type = NLA_FLAG },
 519         [NL80211_ATTR_TDLS_INITIATOR] = { .type = NLA_FLAG },
 520         [NL80211_ATTR_DONT_WAIT_FOR_ACK] = { .type = NLA_FLAG },
 521         [NL80211_ATTR_PROBE_RESP] = { .type = NLA_BINARY,
 522                                       .len = IEEE80211_MAX_DATA_LEN },
 523         [NL80211_ATTR_DFS_REGION] = { .type = NLA_U8 },
 524         [NL80211_ATTR_DISABLE_HT] = { .type = NLA_FLAG },
 525         [NL80211_ATTR_HT_CAPABILITY_MASK] = {
 526                 .len = NL80211_HT_CAPABILITY_LEN
 527         },
 528         [NL80211_ATTR_NOACK_MAP] = { .type = NLA_U16 },
 529         [NL80211_ATTR_INACTIVITY_TIMEOUT] = { .type = NLA_U16 },
 530         [NL80211_ATTR_BG_SCAN_PERIOD] = { .type = NLA_U16 },
 531         [NL80211_ATTR_WDEV] = { .type = NLA_U64 },
 532         [NL80211_ATTR_USER_REG_HINT_TYPE] = { .type = NLA_U32 },
 533         [NL80211_ATTR_AUTH_DATA] = { .type = NLA_BINARY, },
 534         [NL80211_ATTR_VHT_CAPABILITY] = {
 535                 .type = NLA_EXACT_LEN_WARN,
 536                 .len = NL80211_VHT_CAPABILITY_LEN
 537         },
 538         [NL80211_ATTR_SCAN_FLAGS] = { .type = NLA_U32 },
 539         [NL80211_ATTR_P2P_CTWINDOW] = NLA_POLICY_MAX(NLA_U8, 127),
 540         [NL80211_ATTR_P2P_OPPPS] = NLA_POLICY_MAX(NLA_U8, 1),
 541         [NL80211_ATTR_LOCAL_MESH_POWER_MODE] =
 542                 NLA_POLICY_RANGE(NLA_U32,
 543                                  NL80211_MESH_POWER_UNKNOWN + 1,
 544                                  NL80211_MESH_POWER_MAX),
 545         [NL80211_ATTR_ACL_POLICY] = {. type = NLA_U32 },
 546         [NL80211_ATTR_MAC_ADDRS] = { .type = NLA_NESTED },
 547         [NL80211_ATTR_STA_CAPABILITY] = { .type = NLA_U16 },
 548         [NL80211_ATTR_STA_EXT_CAPABILITY] = { .type = NLA_BINARY, },
 549         [NL80211_ATTR_SPLIT_WIPHY_DUMP] = { .type = NLA_FLAG, },
 550         [NL80211_ATTR_DISABLE_VHT] = { .type = NLA_FLAG },
 551         [NL80211_ATTR_VHT_CAPABILITY_MASK] = {
 552                 .len = NL80211_VHT_CAPABILITY_LEN,
 553         },
 554         [NL80211_ATTR_MDID] = { .type = NLA_U16 },
 555         [NL80211_ATTR_IE_RIC] = { .type = NLA_BINARY,
 556                                   .len = IEEE80211_MAX_DATA_LEN },
 557         [NL80211_ATTR_PEER_AID] =
 558                 NLA_POLICY_RANGE(NLA_U16, 1, IEEE80211_MAX_AID),
 559         [NL80211_ATTR_CH_SWITCH_COUNT] = { .type = NLA_U32 },
 560         [NL80211_ATTR_CH_SWITCH_BLOCK_TX] = { .type = NLA_FLAG },
 561         [NL80211_ATTR_CSA_IES] = { .type = NLA_NESTED },
 562         [NL80211_ATTR_CSA_C_OFF_BEACON] = { .type = NLA_BINARY },
 563         [NL80211_ATTR_CSA_C_OFF_PRESP] = { .type = NLA_BINARY },
 564         [NL80211_ATTR_STA_SUPPORTED_CHANNELS] = { .type = NLA_BINARY },
 565         [NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES] = { .type = NLA_BINARY },
 566         [NL80211_ATTR_HANDLE_DFS] = { .type = NLA_FLAG },
 567         [NL80211_ATTR_OPMODE_NOTIF] = { .type = NLA_U8 },
 568         [NL80211_ATTR_VENDOR_ID] = { .type = NLA_U32 },
 569         [NL80211_ATTR_VENDOR_SUBCMD] = { .type = NLA_U32 },
 570         [NL80211_ATTR_VENDOR_DATA] = { .type = NLA_BINARY },
 571         [NL80211_ATTR_QOS_MAP] = { .type = NLA_BINARY,
 572                                    .len = IEEE80211_QOS_MAP_LEN_MAX },
 573         [NL80211_ATTR_MAC_HINT] = {
 574                 .type = NLA_EXACT_LEN_WARN,
 575                 .len = ETH_ALEN
 576         },
 577         [NL80211_ATTR_WIPHY_FREQ_HINT] = { .type = NLA_U32 },
 578         [NL80211_ATTR_TDLS_PEER_CAPABILITY] = { .type = NLA_U32 },
 579         [NL80211_ATTR_SOCKET_OWNER] = { .type = NLA_FLAG },
 580         [NL80211_ATTR_CSA_C_OFFSETS_TX] = { .type = NLA_BINARY },
 581         [NL80211_ATTR_USE_RRM] = { .type = NLA_FLAG },
 582         [NL80211_ATTR_TSID] = NLA_POLICY_MAX(NLA_U8, IEEE80211_NUM_TIDS - 1),
 583         [NL80211_ATTR_USER_PRIO] =
 584                 NLA_POLICY_MAX(NLA_U8, IEEE80211_NUM_UPS - 1),
 585         [NL80211_ATTR_ADMITTED_TIME] = { .type = NLA_U16 },
 586         [NL80211_ATTR_SMPS_MODE] = { .type = NLA_U8 },
 587         [NL80211_ATTR_MAC_MASK] = {
 588                 .type = NLA_EXACT_LEN_WARN,
 589                 .len = ETH_ALEN
 590         },
 591         [NL80211_ATTR_WIPHY_SELF_MANAGED_REG] = { .type = NLA_FLAG },
 592         [NL80211_ATTR_NETNS_FD] = { .type = NLA_U32 },
 593         [NL80211_ATTR_SCHED_SCAN_DELAY] = { .type = NLA_U32 },
 594         [NL80211_ATTR_REG_INDOOR] = { .type = NLA_FLAG },
 595         [NL80211_ATTR_PBSS] = { .type = NLA_FLAG },
 596         [NL80211_ATTR_BSS_SELECT] = { .type = NLA_NESTED },
 597         [NL80211_ATTR_STA_SUPPORT_P2P_PS] =
 598                 NLA_POLICY_MAX(NLA_U8, NUM_NL80211_P2P_PS_STATUS - 1),
 599         [NL80211_ATTR_MU_MIMO_GROUP_DATA] = {
 600                 .len = VHT_MUMIMO_GROUPS_DATA_LEN
 601         },
 602         [NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR] = {
 603                 .type = NLA_EXACT_LEN_WARN,
 604                 .len = ETH_ALEN
 605         },
 606         [NL80211_ATTR_NAN_MASTER_PREF] = NLA_POLICY_MIN(NLA_U8, 1),
 607         [NL80211_ATTR_BANDS] = { .type = NLA_U32 },
 608         [NL80211_ATTR_NAN_FUNC] = { .type = NLA_NESTED },
 609         [NL80211_ATTR_FILS_KEK] = { .type = NLA_BINARY,
 610                                     .len = FILS_MAX_KEK_LEN },
 611         [NL80211_ATTR_FILS_NONCES] = {
 612                 .type = NLA_EXACT_LEN_WARN,
 613                 .len = 2 * FILS_NONCE_LEN
 614         },
 615         [NL80211_ATTR_MULTICAST_TO_UNICAST_ENABLED] = { .type = NLA_FLAG, },
 616         [NL80211_ATTR_BSSID] = { .type = NLA_EXACT_LEN_WARN, .len = ETH_ALEN },
 617         [NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI] = { .type = NLA_S8 },
 618         [NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST] = {
 619                 .len = sizeof(struct nl80211_bss_select_rssi_adjust)
 620         },
 621         [NL80211_ATTR_TIMEOUT_REASON] = { .type = NLA_U32 },
 622         [NL80211_ATTR_FILS_ERP_USERNAME] = { .type = NLA_BINARY,
 623                                              .len = FILS_ERP_MAX_USERNAME_LEN },
 624         [NL80211_ATTR_FILS_ERP_REALM] = { .type = NLA_BINARY,
 625                                           .len = FILS_ERP_MAX_REALM_LEN },
 626         [NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] = { .type = NLA_U16 },
 627         [NL80211_ATTR_FILS_ERP_RRK] = { .type = NLA_BINARY,
 628                                         .len = FILS_ERP_MAX_RRK_LEN },
 629         [NL80211_ATTR_FILS_CACHE_ID] = { .type = NLA_EXACT_LEN_WARN, .len = 2 },
 630         [NL80211_ATTR_PMK] = { .type = NLA_BINARY, .len = PMK_MAX_LEN },
 631         [NL80211_ATTR_SCHED_SCAN_MULTI] = { .type = NLA_FLAG },
 632         [NL80211_ATTR_EXTERNAL_AUTH_SUPPORT] = { .type = NLA_FLAG },
 633
 634         [NL80211_ATTR_TXQ_LIMIT] = { .type = NLA_U32 },
 635         [NL80211_ATTR_TXQ_MEMORY_LIMIT] = { .type = NLA_U32 },
 636         [NL80211_ATTR_TXQ_QUANTUM] = { .type = NLA_U32 },
 637         [NL80211_ATTR_HE_CAPABILITY] = { .type = NLA_BINARY,
 638                                          .len = NL80211_HE_MAX_CAPABILITY_LEN },
 639
 640         [NL80211_ATTR_FTM_RESPONDER] = {
 641                 .type = NLA_NESTED,
 642                 .validation_data = nl80211_ftm_responder_policy,
 643         },
 644         [NL80211_ATTR_TIMEOUT] = NLA_POLICY_MIN(NLA_U32, 1),
 645         [NL80211_ATTR_PEER_MEASUREMENTS] =
 646                 NLA_POLICY_NESTED(nl80211_pmsr_attr_policy),
 647         [NL80211_ATTR_AIRTIME_WEIGHT] = NLA_POLICY_MIN(NLA_U16, 1),
 648         [NL80211_ATTR_SAE_PASSWORD] = { .type = NLA_BINARY,
 649                                         .len = SAE_PASSWORD_MAX_LEN },
 650         [NL80211_ATTR_TWT_RESPONDER] = { .type = NLA_FLAG },
 651         [NL80211_ATTR_HE_OBSS_PD] = NLA_POLICY_NESTED(he_obss_pd_policy),
 652         [NL80211_ATTR_VLAN_ID] = NLA_POLICY_RANGE(NLA_U16, 1, VLAN_N_VID - 2),
 653         [NL80211_ATTR_HE_BSS_COLOR] = NLA_POLICY_NESTED(he_bss_color_policy),
 654         [NL80211_ATTR_TID_CONFIG] =
 655                 NLA_POLICY_NESTED_ARRAY(nl80211_tid_config_attr_policy),
 656 };
 657
 658 /* policy for the key attributes */
 659 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = {
 660         [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN },
 661         [NL80211_KEY_IDX] = { .type = NLA_U8 },
 662         [NL80211_KEY_CIPHER] = { .type = NLA_U32 },
 663         [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
 664         [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG },
 665         [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG },
 666         [NL80211_KEY_TYPE] = NLA_POLICY_MAX(NLA_U32, NUM_NL80211_KEYTYPES - 1),
 667         [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
 668         [NL80211_KEY_MODE] = NLA_POLICY_RANGE(NLA_U8, 0, NL80211_KEY_SET_TX),
 669 };
 670
 671 /* policy for the key default flags */
 672 static const struct nla_policy
 673 nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = {
 674         [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG },
 675         [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG },
 676 };
 677
 678 #ifdef CONFIG_PM
 679 /* policy for WoWLAN attributes */
 680 static const struct nla_policy
 681 nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = {
 682         [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG },
 683         [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG },
 684         [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG },
 685         [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED },
 686         [NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG },
 687         [NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG },
 688         [NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG },
 689         [NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG },
 690         [NL80211_WOWLAN_TRIG_TCP_CONNECTION] = { .type = NLA_NESTED },
 691         [NL80211_WOWLAN_TRIG_NET_DETECT] = { .type = NLA_NESTED },
 692 };
 693
 694 static const struct nla_policy
 695 nl80211_wowlan_tcp_policy[NUM_NL80211_WOWLAN_TCP] = {
 696         [NL80211_WOWLAN_TCP_SRC_IPV4] = { .type = NLA_U32 },
 697         [NL80211_WOWLAN_TCP_DST_IPV4] = { .type = NLA_U32 },
 698         [NL80211_WOWLAN_TCP_DST_MAC] = {
 699                 .type = NLA_EXACT_LEN_WARN,
 700                 .len = ETH_ALEN
 701         },
 702         [NL80211_WOWLAN_TCP_SRC_PORT] = { .type = NLA_U16 },
 703         [NL80211_WOWLAN_TCP_DST_PORT] = { .type = NLA_U16 },
 704         [NL80211_WOWLAN_TCP_DATA_PAYLOAD] = { .type = NLA_MIN_LEN, .len = 1 },
 705         [NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ] = {
 706                 .len = sizeof(struct nl80211_wowlan_tcp_data_seq)
 707         },
 708         [NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN] = {
 709                 .len = sizeof(struct nl80211_wowlan_tcp_data_token)
 710         },
 711         [NL80211_WOWLAN_TCP_DATA_INTERVAL] = { .type = NLA_U32 },
 712         [NL80211_WOWLAN_TCP_WAKE_PAYLOAD] = { .type = NLA_MIN_LEN, .len = 1 },
 713         [NL80211_WOWLAN_TCP_WAKE_MASK] = { .type = NLA_MIN_LEN, .len = 1 },
 714 };
 715 #endif /* CONFIG_PM */
 716
 717 /* policy for coalesce rule attributes */
 718 static const struct nla_policy
 719 nl80211_coalesce_policy[NUM_NL80211_ATTR_COALESCE_RULE] = {
 720         [NL80211_ATTR_COALESCE_RULE_DELAY] = { .type = NLA_U32 },
 721         [NL80211_ATTR_COALESCE_RULE_CONDITION] =
 722                 NLA_POLICY_RANGE(NLA_U32,
 723                                  NL80211_COALESCE_CONDITION_MATCH,
 724                                  NL80211_COALESCE_CONDITION_NO_MATCH),
 725         [NL80211_ATTR_COALESCE_RULE_PKT_PATTERN] = { .type = NLA_NESTED },
 726 };
 727
 728 /* policy for GTK rekey offload attributes */
 729 static const struct nla_policy
 730 nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = {
 731         [NL80211_REKEY_DATA_KEK] = {
 732                 .type = NLA_EXACT_LEN_WARN,
 733                 .len = NL80211_KEK_LEN,
 734         },
 735         [NL80211_REKEY_DATA_KCK] = {
 736                 .type = NLA_EXACT_LEN_WARN,
 737                 .len = NL80211_KCK_LEN,
 738         },
 739         [NL80211_REKEY_DATA_REPLAY_CTR] = {
 740                 .type = NLA_EXACT_LEN_WARN,
 741                 .len = NL80211_REPLAY_CTR_LEN
 742         },
 743 };
 744
 745 static const struct nla_policy
 746 nl80211_match_band_rssi_policy[NUM_NL80211_BANDS] = {
 747         [NL80211_BAND_2GHZ] = { .type = NLA_S32 },
 748         [NL80211_BAND_5GHZ] = { .type = NLA_S32 },
 749         [NL80211_BAND_6GHZ] = { .type = NLA_S32 },
 750         [NL80211_BAND_60GHZ] = { .type = NLA_S32 },
 751 };
 752
 753 static const struct nla_policy
 754 nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = {
 755         [NL80211_SCHED_SCAN_MATCH_ATTR_SSID] = { .type = NLA_BINARY,
 756                                                  .len = IEEE80211_MAX_SSID_LEN },
 757         [NL80211_SCHED_SCAN_MATCH_ATTR_BSSID] = {
 758                 .type = NLA_EXACT_LEN_WARN,
 759                 .len = ETH_ALEN
 760         },
 761         [NL80211_SCHED_SCAN_MATCH_ATTR_RSSI] = { .type = NLA_U32 },
 762         [NL80211_SCHED_SCAN_MATCH_PER_BAND_RSSI] =
 763                 NLA_POLICY_NESTED(nl80211_match_band_rssi_policy),
 764 };
 765
 766 static const struct nla_policy
 767 nl80211_plan_policy[NL80211_SCHED_SCAN_PLAN_MAX + 1] = {
 768         [NL80211_SCHED_SCAN_PLAN_INTERVAL] = { .type = NLA_U32 },
 769         [NL80211_SCHED_SCAN_PLAN_ITERATIONS] = { .type = NLA_U32 },
 770 };
 771
 772 static const struct nla_policy
 773 nl80211_bss_select_policy[NL80211_BSS_SELECT_ATTR_MAX + 1] = {
 774         [NL80211_BSS_SELECT_ATTR_RSSI] = { .type = NLA_FLAG },
 775         [NL80211_BSS_SELECT_ATTR_BAND_PREF] = { .type = NLA_U32 },
 776         [NL80211_BSS_SELECT_ATTR_RSSI_ADJUST] = {
 777                 .len = sizeof(struct nl80211_bss_select_rssi_adjust)
 778         },
 779 };
 780
 781 /* policy for NAN function attributes */
 782 static const struct nla_policy
 783 nl80211_nan_func_policy[NL80211_NAN_FUNC_ATTR_MAX + 1] = {
 784         [NL80211_NAN_FUNC_TYPE] = { .type = NLA_U8 },
 785         [NL80211_NAN_FUNC_SERVICE_ID] = {
 786                                     .len = NL80211_NAN_FUNC_SERVICE_ID_LEN },
 787         [NL80211_NAN_FUNC_PUBLISH_TYPE] = { .type = NLA_U8 },
 788         [NL80211_NAN_FUNC_PUBLISH_BCAST] = { .type = NLA_FLAG },
 789         [NL80211_NAN_FUNC_SUBSCRIBE_ACTIVE] = { .type = NLA_FLAG },
 790         [NL80211_NAN_FUNC_FOLLOW_UP_ID] = { .type = NLA_U8 },
 791         [NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID] = { .type = NLA_U8 },
 792         [NL80211_NAN_FUNC_FOLLOW_UP_DEST] = {
 793                 .type = NLA_EXACT_LEN_WARN,
 794                 .len = ETH_ALEN
 795         },
 796         [NL80211_NAN_FUNC_CLOSE_RANGE] = { .type = NLA_FLAG },
 797         [NL80211_NAN_FUNC_TTL] = { .type = NLA_U32 },
 798         [NL80211_NAN_FUNC_SERVICE_INFO] = { .type = NLA_BINARY,
 799                         .len = NL80211_NAN_FUNC_SERVICE_SPEC_INFO_MAX_LEN },
 800         [NL80211_NAN_FUNC_SRF] = { .type = NLA_NESTED },
 801         [NL80211_NAN_FUNC_RX_MATCH_FILTER] = { .type = NLA_NESTED },
 802         [NL80211_NAN_FUNC_TX_MATCH_FILTER] = { .type = NLA_NESTED },
 803         [NL80211_NAN_FUNC_INSTANCE_ID] = { .type = NLA_U8 },
 804         [NL80211_NAN_FUNC_TERM_REASON] = { .type = NLA_U8 },
 805 };
 806
 807 /* policy for Service Response Filter attributes */
 808 static const struct nla_policy
 809 nl80211_nan_srf_policy[NL80211_NAN_SRF_ATTR_MAX + 1] = {
 810         [NL80211_NAN_SRF_INCLUDE] = { .type = NLA_FLAG },
 811         [NL80211_NAN_SRF_BF] = { .type = NLA_BINARY,
 812                                  .len =  NL80211_NAN_FUNC_SRF_MAX_LEN },
 813         [NL80211_NAN_SRF_BF_IDX] = { .type = NLA_U8 },
 814         [NL80211_NAN_SRF_MAC_ADDRS] = { .type = NLA_NESTED },
 815 };
 816
 817 /* policy for packet pattern attributes */
 818 static const struct nla_policy
 819 nl80211_packet_pattern_policy[MAX_NL80211_PKTPAT + 1] = {
 820         [NL80211_PKTPAT_MASK] = { .type = NLA_BINARY, },
 821         [NL80211_PKTPAT_PATTERN] = { .type = NLA_BINARY, },
 822         [NL80211_PKTPAT_OFFSET] = { .type = NLA_U32 },
 823 };
 824
 825 int nl80211_prepare_wdev_dump(struct netlink_callback *cb,
 826                               struct cfg80211_registered_device **rdev,
 827                               struct wireless_dev **wdev)
 828 {
 829         int err;
 830
 831         if (!cb->args[0]) {
 832                 struct nlattr **attrbuf;
 833
 834                 attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf),
 835                                   GFP_KERNEL);
 836                 if (!attrbuf)
 837                         return -ENOMEM;
 838
 839                 err = nlmsg_parse_deprecated(cb->nlh,
 840                                              GENL_HDRLEN + nl80211_fam.hdrsize,
 841                                              attrbuf, nl80211_fam.maxattr,
 842                                              nl80211_policy, NULL);
 843                 if (err) {
 844                         kfree(attrbuf);
 845                         return err;
 846                 }
 847
 848                 *wdev = __cfg80211_wdev_from_attrs(sock_net(cb->skb->sk),
 849                                                    attrbuf);
 850                 kfree(attrbuf);
 851                 if (IS_ERR(*wdev))
 852                         return PTR_ERR(*wdev);
 853                 *rdev = wiphy_to_rdev((*wdev)->wiphy);
 854                 /* 0 is the first index - add 1 to parse only once */
 855                 cb->args[0] = (*rdev)->wiphy_idx + 1;
 856                 cb->args[1] = (*wdev)->identifier;
 857         } else {
 858                 /* subtract the 1 again here */
 859                 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
 860                 struct wireless_dev *tmp;
 861
 862                 if (!wiphy)
 863                         return -ENODEV;
 864                 *rdev = wiphy_to_rdev(wiphy);
 865                 *wdev = NULL;
 866
 867                 list_for_each_entry(tmp, &(*rdev)->wiphy.wdev_list, list) {
 868                         if (tmp->identifier == cb->args[1]) {
 869                                 *wdev = tmp;
 870                                 break;
 871                         }
 872                 }
 873
 874                 if (!*wdev)
 875                         return -ENODEV;
 876         }
 877
 878         return 0;
 879 }
 880
 881 /* message building helper */
 882 void *nl80211hdr_put(struct sk_buff *skb, u32 portid, u32 seq,
 883                      int flags, u8 cmd)
 884 {
 885         /* since there is no private header just add the generic one */
 886         return genlmsg_put(skb, portid, seq, &nl80211_fam, flags, cmd);
 887 }
 888
 889 static int nl80211_msg_put_wmm_rules(struct sk_buff *msg,
 890                                      const struct ieee80211_reg_rule *rule)
 891 {
 892         int j;
 893         struct nlattr *nl_wmm_rules =
 894                 nla_nest_start_noflag(msg, NL80211_FREQUENCY_ATTR_WMM);
 895
 896         if (!nl_wmm_rules)
 897                 goto nla_put_failure;
 898
 899         for (j = 0; j < IEEE80211_NUM_ACS; j++) {
 900                 struct nlattr *nl_wmm_rule = nla_nest_start_noflag(msg, j);
 901
 902                 if (!nl_wmm_rule)
 903                         goto nla_put_failure;
 904
 905                 if (nla_put_u16(msg, NL80211_WMMR_CW_MIN,
 906                                 rule->wmm_rule.client[j].cw_min) ||
 907                     nla_put_u16(msg, NL80211_WMMR_CW_MAX,
 908                                 rule->wmm_rule.client[j].cw_max) ||
 909                     nla_put_u8(msg, NL80211_WMMR_AIFSN,
 910                                rule->wmm_rule.client[j].aifsn) ||
 911                     nla_put_u16(msg, NL80211_WMMR_TXOP,
 912                                 rule->wmm_rule.client[j].cot))
 913                         goto nla_put_failure;
 914
 915                 nla_nest_end(msg, nl_wmm_rule);
 916         }
 917         nla_nest_end(msg, nl_wmm_rules);
 918
 919         return 0;
 920
 921 nla_put_failure:
 922         return -ENOBUFS;
 923 }
 924
 925 static int nl80211_msg_put_channel(struct sk_buff *msg, struct wiphy *wiphy,
 926                                    struct ieee80211_channel *chan,
 927                                    bool large)
 928 {
 929         /* Some channels must be completely excluded from the
 930          * list to protect old user-space tools from breaking
 931          */
 932         if (!large && chan->flags &
 933             (IEEE80211_CHAN_NO_10MHZ | IEEE80211_CHAN_NO_20MHZ))
 934                 return 0;
 935
 936         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ,
 937                         chan->center_freq))
 938                 goto nla_put_failure;
 939
 940         if ((chan->flags & IEEE80211_CHAN_DISABLED) &&
 941             nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED))
 942                 goto nla_put_failure;
 943         if (chan->flags & IEEE80211_CHAN_NO_IR) {
 944                 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IR))
 945                         goto nla_put_failure;
 946                 if (nla_put_flag(msg, __NL80211_FREQUENCY_ATTR_NO_IBSS))
 947                         goto nla_put_failure;
 948         }
 949         if (chan->flags & IEEE80211_CHAN_RADAR) {
 950                 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR))
 951                         goto nla_put_failure;
 952                 if (large) {
 953                         u32 time;
 954
 955                         time = elapsed_jiffies_msecs(chan->dfs_state_entered);
 956
 957                         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_STATE,
 958                                         chan->dfs_state))
 959                                 goto nla_put_failure;
 960                         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_TIME,
 961                                         time))
 962                                 goto nla_put_failure;
 963                         if (nla_put_u32(msg,
 964                                         NL80211_FREQUENCY_ATTR_DFS_CAC_TIME,
 965                                         chan->dfs_cac_ms))
 966                                 goto nla_put_failure;
 967                 }
 968         }
 969
 970         if (large) {
 971                 if ((chan->flags & IEEE80211_CHAN_NO_HT40MINUS) &&
 972                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_MINUS))
 973                         goto nla_put_failure;
 974                 if ((chan->flags & IEEE80211_CHAN_NO_HT40PLUS) &&
 975                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_PLUS))
 976                         goto nla_put_failure;
 977                 if ((chan->flags & IEEE80211_CHAN_NO_80MHZ) &&
 978                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_80MHZ))
 979                         goto nla_put_failure;
 980                 if ((chan->flags & IEEE80211_CHAN_NO_160MHZ) &&
 981                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_160MHZ))
 982                         goto nla_put_failure;
 983                 if ((chan->flags & IEEE80211_CHAN_INDOOR_ONLY) &&
 984                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_INDOOR_ONLY))
 985                         goto nla_put_failure;
 986                 if ((chan->flags & IEEE80211_CHAN_IR_CONCURRENT) &&
 987                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_IR_CONCURRENT))
 988                         goto nla_put_failure;
 989                 if ((chan->flags & IEEE80211_CHAN_NO_20MHZ) &&
 990                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_20MHZ))
 991                         goto nla_put_failure;
 992                 if ((chan->flags & IEEE80211_CHAN_NO_10MHZ) &&
 993                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_10MHZ))
 994                         goto nla_put_failure;
 995                 if ((chan->flags & IEEE80211_CHAN_NO_HE) &&
 996                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HE))
 997                         goto nla_put_failure;
 998         }
 999
1000         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
1001                         DBM_TO_MBM(chan->max_power)))
1002                 goto nla_put_failure;
1003
1004         if (large) {
1005                 const struct ieee80211_reg_rule *rule =
1006                         freq_reg_info(wiphy, MHZ_TO_KHZ(chan->center_freq));
1007
1008                 if (!IS_ERR_OR_NULL(rule) && rule->has_wmm) {
1009                         if (nl80211_msg_put_wmm_rules(msg, rule))
1010                                 goto nla_put_failure;
1011                 }
1012         }
1013
1014         return 0;
1015
1016  nla_put_failure:
1017         return -ENOBUFS;
1018 }
1019
1020 static bool nl80211_put_txq_stats(struct sk_buff *msg,
1021                                   struct cfg80211_txq_stats *txqstats,
1022                                   int attrtype)
1023 {
1024         struct nlattr *txqattr;
1025
1026 #define PUT_TXQVAL_U32(attr, memb) do {                                   \
1027         if (txqstats->filled & BIT(NL80211_TXQ_STATS_ ## attr) &&         \
1028             nla_put_u32(msg, NL80211_TXQ_STATS_ ## attr, txqstats->memb)) \
1029                 return false;                                             \
1030         } while (0)
1031
1032         txqattr = nla_nest_start_noflag(msg, attrtype);
1033         if (!txqattr)
1034                 return false;
1035
1036         PUT_TXQVAL_U32(BACKLOG_BYTES, backlog_bytes);
1037         PUT_TXQVAL_U32(BACKLOG_PACKETS, backlog_packets);
1038         PUT_TXQVAL_U32(FLOWS, flows);
1039         PUT_TXQVAL_U32(DROPS, drops);
1040         PUT_TXQVAL_U32(ECN_MARKS, ecn_marks);
1041         PUT_TXQVAL_U32(OVERLIMIT, overlimit);
1042         PUT_TXQVAL_U32(OVERMEMORY, overmemory);
1043         PUT_TXQVAL_U32(COLLISIONS, collisions);
1044         PUT_TXQVAL_U32(TX_BYTES, tx_bytes);
1045         PUT_TXQVAL_U32(TX_PACKETS, tx_packets);
1046         PUT_TXQVAL_U32(MAX_FLOWS, max_flows);
1047         nla_nest_end(msg, txqattr);
1048
1049 #undef PUT_TXQVAL_U32
1050         return true;
1051 }
1052
1053 /* netlink command implementations */
1054
1055 struct key_parse {
1056         struct key_params p;
1057         int idx;
1058         int type;
1059         bool def, defmgmt, defbeacon;
1060         bool def_uni, def_multi;
1061 };
1062
1063 static int nl80211_parse_key_new(struct genl_info *info, struct nlattr *key,
1064                                  struct key_parse *k)
1065 {
1066         struct nlattr *tb[NL80211_KEY_MAX + 1];
1067         int err = nla_parse_nested_deprecated(tb, NL80211_KEY_MAX, key,
1068                                               nl80211_key_policy,
1069                                               info->extack);
1070         if (err)
1071                 return err;
1072
1073         k->def = !!tb[NL80211_KEY_DEFAULT];
1074         k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];
1075         k->defbeacon = !!tb[NL80211_KEY_DEFAULT_BEACON];
1076
1077         if (k->def) {
1078                 k->def_uni = true;
1079                 k->def_multi = true;
1080         }
1081         if (k->defmgmt || k->defbeacon)
1082                 k->def_multi = true;
1083
1084         if (tb[NL80211_KEY_IDX])
1085                 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);
1086
1087         if (tb[NL80211_KEY_DATA]) {
1088                 k->p.key = nla_data(tb[NL80211_KEY_DATA]);
1089                 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
1090         }
1091
1092         if (tb[NL80211_KEY_SEQ]) {
1093                 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
1094                 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
1095         }
1096
1097         if (tb[NL80211_KEY_CIPHER])
1098                 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);
1099
1100         if (tb[NL80211_KEY_TYPE])
1101                 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]);
1102
1103         if (tb[NL80211_KEY_DEFAULT_TYPES]) {
1104                 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
1105
1106                 err = nla_parse_nested_deprecated(kdt,
1107                                                   NUM_NL80211_KEY_DEFAULT_TYPES - 1,
1108                                                   tb[NL80211_KEY_DEFAULT_TYPES],
1109                                                   nl80211_key_default_policy,
1110                                                   info->extack);
1111                 if (err)
1112                         return err;
1113
1114                 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
1115                 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
1116         }
1117
1118         if (tb[NL80211_KEY_MODE])
1119                 k->p.mode = nla_get_u8(tb[NL80211_KEY_MODE]);
1120
1121         return 0;
1122 }
1123
1124 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k)
1125 {
1126         if (info->attrs[NL80211_ATTR_KEY_DATA]) {
1127                 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
1128                 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
1129         }
1130
1131         if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
1132                 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
1133                 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
1134         }
1135
1136         if (info->attrs[NL80211_ATTR_KEY_IDX])
1137                 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
1138
1139         if (info->attrs[NL80211_ATTR_KEY_CIPHER])
1140                 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
1141
1142         k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
1143         k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT];
1144
1145         if (k->def) {
1146                 k->def_uni = true;
1147                 k->def_multi = true;
1148         }
1149         if (k->defmgmt)
1150                 k->def_multi = true;
1151
1152         if (info->attrs[NL80211_ATTR_KEY_TYPE])
1153                 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
1154
1155         if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) {
1156                 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
1157                 int err = nla_parse_nested_deprecated(kdt,
1158                                                       NUM_NL80211_KEY_DEFAULT_TYPES - 1,
1159                                                       info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES],
1160                                                       nl80211_key_default_policy,
1161                                                       info->extack);
1162                 if (err)
1163                         return err;
1164
1165                 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
1166                 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
1167         }
1168
1169         return 0;
1170 }
1171
1172 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
1173 {
1174         int err;
1175
1176         memset(k, 0, sizeof(*k));
1177         k->idx = -1;
1178         k->type = -1;
1179
1180         if (info->attrs[NL80211_ATTR_KEY])
1181                 err = nl80211_parse_key_new(info, info->attrs[NL80211_ATTR_KEY], k);
1182         else
1183                 err = nl80211_parse_key_old(info, k);
1184
1185         if (err)
1186                 return err;
1187
1188         if ((k->def ? 1 : 0) + (k->defmgmt ? 1 : 0) +
1189             (k->defbeacon ? 1 : 0) > 1) {
1190                 GENL_SET_ERR_MSG(info,
1191                                  "key with multiple default flags is invalid");
1192                 return -EINVAL;
1193         }
1194
1195         if (k->defmgmt || k->defbeacon) {
1196                 if (k->def_uni || !k->def_multi) {
1197                         GENL_SET_ERR_MSG(info,
1198                                          "defmgmt/defbeacon key must be mcast");
1199                         return -EINVAL;
1200                 }
1201         }
1202
1203         if (k->idx != -1) {
1204                 if (k->defmgmt) {
1205                         if (k->idx < 4 || k->idx > 5) {
1206                                 GENL_SET_ERR_MSG(info,
1207                                                  "defmgmt key idx not 4 or 5");
1208                                 return -EINVAL;
1209                         }
1210                 } else if (k->defbeacon) {
1211                         if (k->idx < 6 || k->idx > 7) {
1212                                 GENL_SET_ERR_MSG(info,
1213                                                  "defbeacon key idx not 6 or 7");
1214                                 return -EINVAL;
1215                         }
1216                 } else if (k->def) {
1217                         if (k->idx < 0 || k->idx > 3) {
1218                                 GENL_SET_ERR_MSG(info, "def key idx not 0-3");
1219                                 return -EINVAL;
1220                         }
1221                 } else {
1222                         if (k->idx < 0 || k->idx > 7) {
1223                                 GENL_SET_ERR_MSG(info, "key idx not 0-7");
1224                                 return -EINVAL;
1225                         }
1226                 }
1227         }
1228
1229         return 0;
1230 }
1231
1232 static struct cfg80211_cached_keys *
1233 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
1234                        struct genl_info *info, bool *no_ht)
1235 {
1236         struct nlattr *keys = info->attrs[NL80211_ATTR_KEYS];
1237         struct key_parse parse;
1238         struct nlattr *key;
1239         struct cfg80211_cached_keys *result;
1240         int rem, err, def = 0;
1241         bool have_key = false;
1242
1243         nla_for_each_nested(key, keys, rem) {
1244                 have_key = true;
1245                 break;
1246         }
1247
1248         if (!have_key)
1249                 return NULL;
1250
1251         result = kzalloc(sizeof(*result), GFP_KERNEL);
1252         if (!result)
1253                 return ERR_PTR(-ENOMEM);
1254
1255         result->def = -1;
1256
1257         nla_for_each_nested(key, keys, rem) {
1258                 memset(&parse, 0, sizeof(parse));
1259                 parse.idx = -1;
1260
1261                 err = nl80211_parse_key_new(info, key, &parse);
1262                 if (err)
1263                         goto error;
1264                 err = -EINVAL;
1265                 if (!parse.p.key)
1266                         goto error;
1267                 if (parse.idx < 0 || parse.idx > 3) {
1268                         GENL_SET_ERR_MSG(info, "key index out of range [0-3]");
1269                         goto error;
1270                 }
1271                 if (parse.def) {
1272                         if (def) {
1273                                 GENL_SET_ERR_MSG(info,
1274                                                  "only one key can be default");
1275                                 goto error;
1276                         }
1277                         def = 1;
1278                         result->def = parse.idx;
1279                         if (!parse.def_uni || !parse.def_multi)
1280                                 goto error;
1281                 } else if (parse.defmgmt)
1282                         goto error;
1283                 err = cfg80211_validate_key_settings(rdev, &parse.p,
1284                                                      parse.idx, false, NULL);
1285                 if (err)
1286                         goto error;
1287                 if (parse.p.cipher != WLAN_CIPHER_SUITE_WEP40 &&
1288                     parse.p.cipher != WLAN_CIPHER_SUITE_WEP104) {
1289                         GENL_SET_ERR_MSG(info, "connect key must be WEP");
1290                         err = -EINVAL;
1291                         goto error;
1292                 }
1293                 result->params[parse.idx].cipher = parse.p.cipher;
1294                 result->params[parse.idx].key_len = parse.p.key_len;
1295                 result->params[parse.idx].key = result->data[parse.idx];
1296                 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
1297
1298                 /* must be WEP key if we got here */
1299                 if (no_ht)
1300                         *no_ht = true;
1301         }
1302
1303         if (result->def < 0) {
1304                 err = -EINVAL;
1305                 GENL_SET_ERR_MSG(info, "need a default/TX key");
1306                 goto error;
1307         }
1308
1309         return result;
1310  error:
1311         kfree(result);
1312         return ERR_PTR(err);
1313 }
1314
1315 static int nl80211_key_allowed(struct wireless_dev *wdev)
1316 {
1317         ASSERT_WDEV_LOCK(wdev);
1318
1319         switch (wdev->iftype) {
1320         case NL80211_IFTYPE_AP:
1321         case NL80211_IFTYPE_AP_VLAN:
1322         case NL80211_IFTYPE_P2P_GO:
1323         case NL80211_IFTYPE_MESH_POINT:
1324                 break;
1325         case NL80211_IFTYPE_ADHOC:
1326         case NL80211_IFTYPE_STATION:
1327         case NL80211_IFTYPE_P2P_CLIENT:
1328                 if (!wdev->current_bss)
1329                         return -ENOLINK;
1330                 break;
1331         case NL80211_IFTYPE_UNSPECIFIED:
1332         case NL80211_IFTYPE_OCB:
1333         case NL80211_IFTYPE_MONITOR:
1334         case NL80211_IFTYPE_NAN:
1335         case NL80211_IFTYPE_P2P_DEVICE:
1336         case NL80211_IFTYPE_WDS:
1337         case NUM_NL80211_IFTYPES:
1338                 return -EINVAL;
1339         }
1340
1341         return 0;
1342 }
1343
1344 static struct ieee80211_channel *nl80211_get_valid_chan(struct wiphy *wiphy,
1345                                                         struct nlattr *tb)
1346 {
1347         struct ieee80211_channel *chan;
1348
1349         if (tb == NULL)
1350                 return NULL;
1351         chan = ieee80211_get_channel(wiphy, nla_get_u32(tb));
1352         if (!chan || chan->flags & IEEE80211_CHAN_DISABLED)
1353                 return NULL;
1354         return chan;
1355 }
1356
1357 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes)
1358 {
1359         struct nlattr *nl_modes = nla_nest_start_noflag(msg, attr);
1360         int i;
1361
1362         if (!nl_modes)
1363                 goto nla_put_failure;
1364
1365         i = 0;
1366         while (ifmodes) {
1367                 if ((ifmodes & 1) && nla_put_flag(msg, i))
1368                         goto nla_put_failure;
1369                 ifmodes >>= 1;
1370                 i++;
1371         }
1372
1373         nla_nest_end(msg, nl_modes);
1374         return 0;
1375
1376 nla_put_failure:
1377         return -ENOBUFS;
1378 }
1379
1380 static int nl80211_put_iface_combinations(struct wiphy *wiphy,
1381                                           struct sk_buff *msg,
1382                                           bool large)
1383 {
1384         struct nlattr *nl_combis;
1385         int i, j;
1386
1387         nl_combis = nla_nest_start_noflag(msg,
1388                                           NL80211_ATTR_INTERFACE_COMBINATIONS);
1389         if (!nl_combis)
1390                 goto nla_put_failure;
1391
1392         for (i = 0; i < wiphy->n_iface_combinations; i++) {
1393                 const struct ieee80211_iface_combination *c;
1394                 struct nlattr *nl_combi, *nl_limits;
1395
1396                 c = &wiphy->iface_combinations[i];
1397
1398                 nl_combi = nla_nest_start_noflag(msg, i + 1);
1399                 if (!nl_combi)
1400                         goto nla_put_failure;
1401
1402                 nl_limits = nla_nest_start_noflag(msg,
1403                                                   NL80211_IFACE_COMB_LIMITS);
1404                 if (!nl_limits)
1405                         goto nla_put_failure;
1406
1407                 for (j = 0; j < c->n_limits; j++) {
1408                         struct nlattr *nl_limit;
1409
1410                         nl_limit = nla_nest_start_noflag(msg, j + 1);
1411                         if (!nl_limit)
1412                                 goto nla_put_failure;
1413                         if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX,
1414                                         c->limits[j].max))
1415                                 goto nla_put_failure;
1416                         if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES,
1417                                                 c->limits[j].types))
1418                                 goto nla_put_failure;
1419                         nla_nest_end(msg, nl_limit);
1420                 }
1421
1422                 nla_nest_end(msg, nl_limits);
1423
1424                 if (c->beacon_int_infra_match &&
1425                     nla_put_flag(msg, NL80211_IFACE_COMB_STA_AP_BI_MATCH))
1426                         goto nla_put_failure;
1427                 if (nla_put_u32(msg, NL80211_IFACE_COMB_NUM_CHANNELS,
1428                                 c->num_different_channels) ||
1429                     nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM,
1430                                 c->max_interfaces))
1431                         goto nla_put_failure;
1432                 if (large &&
1433                     (nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS,
1434                                 c->radar_detect_widths) ||
1435                      nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_REGIONS,
1436                                 c->radar_detect_regions)))
1437                         goto nla_put_failure;
1438                 if (c->beacon_int_min_gcd &&
1439                     nla_put_u32(msg, NL80211_IFACE_COMB_BI_MIN_GCD,
1440                                 c->beacon_int_min_gcd))
1441                         goto nla_put_failure;
1442
1443                 nla_nest_end(msg, nl_combi);
1444         }
1445
1446         nla_nest_end(msg, nl_combis);
1447
1448         return 0;
1449 nla_put_failure:
1450         return -ENOBUFS;
1451 }
1452
1453 #ifdef CONFIG_PM
1454 static int nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device *rdev,
1455                                         struct sk_buff *msg)
1456 {
1457         const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan->tcp;
1458         struct nlattr *nl_tcp;
1459
1460         if (!tcp)
1461                 return 0;
1462
1463         nl_tcp = nla_nest_start_noflag(msg,
1464                                        NL80211_WOWLAN_TRIG_TCP_CONNECTION);
1465         if (!nl_tcp)
1466                 return -ENOBUFS;
1467
1468         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1469                         tcp->data_payload_max))
1470                 return -ENOBUFS;
1471
1472         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1473                         tcp->data_payload_max))
1474                 return -ENOBUFS;
1475
1476         if (tcp->seq && nla_put_flag(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ))
1477                 return -ENOBUFS;
1478
1479         if (tcp->tok && nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
1480                                 sizeof(*tcp->tok), tcp->tok))
1481                 return -ENOBUFS;
1482
1483         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
1484                         tcp->data_interval_max))
1485                 return -ENOBUFS;
1486
1487         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
1488                         tcp->wake_payload_max))
1489                 return -ENOBUFS;
1490
1491         nla_nest_end(msg, nl_tcp);
1492         return 0;
1493 }
1494
1495 static int nl80211_send_wowlan(struct sk_buff *msg,
1496                                struct cfg80211_registered_device *rdev,
1497                                bool large)
1498 {
1499         struct nlattr *nl_wowlan;
1500
1501         if (!rdev->wiphy.wowlan)
1502                 return 0;
1503
1504         nl_wowlan = nla_nest_start_noflag(msg,
1505                                           NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED);
1506         if (!nl_wowlan)
1507                 return -ENOBUFS;
1508
1509         if (((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_ANY) &&
1510              nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
1511             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_DISCONNECT) &&
1512              nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
1513             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT) &&
1514              nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
1515             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) &&
1516              nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) ||
1517             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) &&
1518              nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
1519             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) &&
1520              nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
1521             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) &&
1522              nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
1523             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE) &&
1524              nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
1525                 return -ENOBUFS;
1526
1527         if (rdev->wiphy.wowlan->n_patterns) {
1528                 struct nl80211_pattern_support pat = {
1529                         .max_patterns = rdev->wiphy.wowlan->n_patterns,
1530                         .min_pattern_len = rdev->wiphy.wowlan->pattern_min_len,
1531                         .max_pattern_len = rdev->wiphy.wowlan->pattern_max_len,
1532                         .max_pkt_offset = rdev->wiphy.wowlan->max_pkt_offset,
1533                 };
1534
1535                 if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
1536                             sizeof(pat), &pat))
1537                         return -ENOBUFS;
1538         }
1539
1540         if ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_NET_DETECT) &&
1541             nla_put_u32(msg, NL80211_WOWLAN_TRIG_NET_DETECT,
1542                         rdev->wiphy.wowlan->max_nd_match_sets))
1543                 return -ENOBUFS;
1544
1545         if (large && nl80211_send_wowlan_tcp_caps(rdev, msg))
1546                 return -ENOBUFS;
1547
1548         nla_nest_end(msg, nl_wowlan);
1549
1550         return 0;
1551 }
1552 #endif
1553
1554 static int nl80211_send_coalesce(struct sk_buff *msg,
1555                                  struct cfg80211_registered_device *rdev)
1556 {
1557         struct nl80211_coalesce_rule_support rule;
1558
1559         if (!rdev->wiphy.coalesce)
1560                 return 0;
1561
1562         rule.max_rules = rdev->wiphy.coalesce->n_rules;
1563         rule.max_delay = rdev->wiphy.coalesce->max_delay;
1564         rule.pat.max_patterns = rdev->wiphy.coalesce->n_patterns;
1565         rule.pat.min_pattern_len = rdev->wiphy.coalesce->pattern_min_len;
1566         rule.pat.max_pattern_len = rdev->wiphy.coalesce->pattern_max_len;
1567         rule.pat.max_pkt_offset = rdev->wiphy.coalesce->max_pkt_offset;
1568
1569         if (nla_put(msg, NL80211_ATTR_COALESCE_RULE, sizeof(rule), &rule))
1570                 return -ENOBUFS;
1571
1572         return 0;
1573 }
1574
1575 static int
1576 nl80211_send_iftype_data(struct sk_buff *msg,
1577                          const struct ieee80211_sband_iftype_data *iftdata)
1578 {
1579         const struct ieee80211_sta_he_cap *he_cap = &iftdata->he_cap;
1580
1581         if (nl80211_put_iftypes(msg, NL80211_BAND_IFTYPE_ATTR_IFTYPES,
1582                                 iftdata->types_mask))
1583                 return -ENOBUFS;
1584
1585         if (he_cap->has_he) {
1586                 if (nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_MAC,
1587                             sizeof(he_cap->he_cap_elem.mac_cap_info),
1588                             he_cap->he_cap_elem.mac_cap_info) ||
1589                     nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_PHY,
1590                             sizeof(he_cap->he_cap_elem.phy_cap_info),
1591                             he_cap->he_cap_elem.phy_cap_info) ||
1592                     nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_MCS_SET,
1593                             sizeof(he_cap->he_mcs_nss_supp),
1594                             &he_cap->he_mcs_nss_supp) ||
1595                     nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_PPE,
1596                             sizeof(he_cap->ppe_thres), he_cap->ppe_thres))
1597                         return -ENOBUFS;
1598         }
1599
1600         return 0;
1601 }
1602
1603 static int nl80211_send_band_rateinfo(struct sk_buff *msg,
1604                                       struct ieee80211_supported_band *sband)
1605 {
1606         struct nlattr *nl_rates, *nl_rate;
1607         struct ieee80211_rate *rate;
1608         int i;
1609
1610         /* add HT info */
1611         if (sband->ht_cap.ht_supported &&
1612             (nla_put(msg, NL80211_BAND_ATTR_HT_MCS_SET,
1613                      sizeof(sband->ht_cap.mcs),
1614                      &sband->ht_cap.mcs) ||
1615              nla_put_u16(msg, NL80211_BAND_ATTR_HT_CAPA,
1616                          sband->ht_cap.cap) ||
1617              nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
1618                         sband->ht_cap.ampdu_factor) ||
1619              nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
1620                         sband->ht_cap.ampdu_density)))
1621                 return -ENOBUFS;
1622
1623         /* add VHT info */
1624         if (sband->vht_cap.vht_supported &&
1625             (nla_put(msg, NL80211_BAND_ATTR_VHT_MCS_SET,
1626                      sizeof(sband->vht_cap.vht_mcs),
1627                      &sband->vht_cap.vht_mcs) ||
1628              nla_put_u32(msg, NL80211_BAND_ATTR_VHT_CAPA,
1629                          sband->vht_cap.cap)))
1630                 return -ENOBUFS;
1631
1632         if (sband->n_iftype_data) {
1633                 struct nlattr *nl_iftype_data =
1634                         nla_nest_start_noflag(msg,
1635                                               NL80211_BAND_ATTR_IFTYPE_DATA);
1636                 int err;
1637
1638                 if (!nl_iftype_data)
1639                         return -ENOBUFS;
1640
1641                 for (i = 0; i < sband->n_iftype_data; i++) {
1642                         struct nlattr *iftdata;
1643
1644                         iftdata = nla_nest_start_noflag(msg, i + 1);
1645                         if (!iftdata)
1646                                 return -ENOBUFS;
1647
1648                         err = nl80211_send_iftype_data(msg,
1649                                                        &sband->iftype_data[i]);
1650                         if (err)
1651                                 return err;
1652
1653                         nla_nest_end(msg, iftdata);
1654                 }
1655
1656                 nla_nest_end(msg, nl_iftype_data);
1657         }
1658
1659         /* add EDMG info */
1660         if (sband->edmg_cap.channels &&
1661             (nla_put_u8(msg, NL80211_BAND_ATTR_EDMG_CHANNELS,
1662                        sband->edmg_cap.channels) ||
1663             nla_put_u8(msg, NL80211_BAND_ATTR_EDMG_BW_CONFIG,
1664                        sband->edmg_cap.bw_config)))
1665
1666                 return -ENOBUFS;
1667
1668         /* add bitrates */
1669         nl_rates = nla_nest_start_noflag(msg, NL80211_BAND_ATTR_RATES);
1670         if (!nl_rates)
1671                 return -ENOBUFS;
1672
1673         for (i = 0; i < sband->n_bitrates; i++) {
1674                 nl_rate = nla_nest_start_noflag(msg, i);
1675                 if (!nl_rate)
1676                         return -ENOBUFS;
1677
1678                 rate = &sband->bitrates[i];
1679                 if (nla_put_u32(msg, NL80211_BITRATE_ATTR_RATE,
1680                                 rate->bitrate))
1681                         return -ENOBUFS;
1682                 if ((rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) &&
1683                     nla_put_flag(msg,
1684                                  NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE))
1685                         return -ENOBUFS;
1686
1687                 nla_nest_end(msg, nl_rate);
1688         }
1689
1690         nla_nest_end(msg, nl_rates);
1691
1692         return 0;
1693 }
1694
1695 static int
1696 nl80211_send_mgmt_stypes(struct sk_buff *msg,
1697                          const struct ieee80211_txrx_stypes *mgmt_stypes)
1698 {
1699         u16 stypes;
1700         struct nlattr *nl_ftypes, *nl_ifs;
1701         enum nl80211_iftype ift;
1702         int i;
1703
1704         if (!mgmt_stypes)
1705                 return 0;
1706
1707         nl_ifs = nla_nest_start_noflag(msg, NL80211_ATTR_TX_FRAME_TYPES);
1708         if (!nl_ifs)
1709                 return -ENOBUFS;
1710
1711         for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1712                 nl_ftypes = nla_nest_start_noflag(msg, ift);
1713                 if (!nl_ftypes)
1714                         return -ENOBUFS;
1715                 i = 0;
1716                 stypes = mgmt_stypes[ift].tx;
1717                 while (stypes) {
1718                         if ((stypes & 1) &&
1719                             nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1720                                         (i << 4) | IEEE80211_FTYPE_MGMT))
1721                                 return -ENOBUFS;
1722                         stypes >>= 1;
1723                         i++;
1724                 }
1725                 nla_nest_end(msg, nl_ftypes);
1726         }
1727
1728         nla_nest_end(msg, nl_ifs);
1729
1730         nl_ifs = nla_nest_start_noflag(msg, NL80211_ATTR_RX_FRAME_TYPES);
1731         if (!nl_ifs)
1732                 return -ENOBUFS;
1733
1734         for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1735                 nl_ftypes = nla_nest_start_noflag(msg, ift);
1736                 if (!nl_ftypes)
1737                         return -ENOBUFS;
1738                 i = 0;
1739                 stypes = mgmt_stypes[ift].rx;
1740                 while (stypes) {
1741                         if ((stypes & 1) &&
1742                             nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1743                                         (i << 4) | IEEE80211_FTYPE_MGMT))
1744                                 return -ENOBUFS;
1745                         stypes >>= 1;
1746                         i++;
1747                 }
1748                 nla_nest_end(msg, nl_ftypes);
1749         }
1750         nla_nest_end(msg, nl_ifs);
1751
1752         return 0;
1753 }
1754
1755 #define CMD(op, n)                                                      \
1756          do {                                                           \
1757                 if (rdev->ops->op) {                                    \
1758                         i++;                                            \
1759                         if (nla_put_u32(msg, i, NL80211_CMD_ ## n))     \
1760                                 goto nla_put_failure;                   \
1761                 }                                                       \
1762         } while (0)
1763
1764 static int nl80211_add_commands_unsplit(struct cfg80211_registered_device *rdev,
1765                                         struct sk_buff *msg)
1766 {
1767         int i = 0;
1768
1769         /*
1770          * do *NOT* add anything into this function, new things need to be
1771          * advertised only to new versions of userspace that can deal with
1772          * the split (and they can't possibly care about new features...
1773          */
1774         CMD(add_virtual_intf, NEW_INTERFACE);
1775         CMD(change_virtual_intf, SET_INTERFACE);
1776         CMD(add_key, NEW_KEY);
1777         CMD(start_ap, START_AP);
1778         CMD(add_station, NEW_STATION);
1779         CMD(add_mpath, NEW_MPATH);
1780         CMD(update_mesh_config, SET_MESH_CONFIG);
1781         CMD(change_bss, SET_BSS);
1782         CMD(auth, AUTHENTICATE);
1783         CMD(assoc, ASSOCIATE);
1784         CMD(deauth, DEAUTHENTICATE);
1785         CMD(disassoc, DISASSOCIATE);
1786         CMD(join_ibss, JOIN_IBSS);
1787         CMD(join_mesh, JOIN_MESH);
1788         CMD(set_pmksa, SET_PMKSA);
1789         CMD(del_pmksa, DEL_PMKSA);
1790         CMD(flush_pmksa, FLUSH_PMKSA);
1791         if (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)
1792                 CMD(remain_on_channel, REMAIN_ON_CHANNEL);
1793         CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
1794         CMD(mgmt_tx, FRAME);
1795         CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL);
1796         if (rdev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
1797                 i++;
1798                 if (nla_put_u32(msg, i, NL80211_CMD_SET_WIPHY_NETNS))
1799                         goto nla_put_failure;
1800         }
1801         if (rdev->ops->set_monitor_channel || rdev->ops->start_ap ||
1802             rdev->ops->join_mesh) {
1803                 i++;
1804                 if (nla_put_u32(msg, i, NL80211_CMD_SET_CHANNEL))
1805                         goto nla_put_failure;
1806         }
1807         CMD(set_wds_peer, SET_WDS_PEER);
1808         if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) {
1809                 CMD(tdls_mgmt, TDLS_MGMT);
1810                 CMD(tdls_oper, TDLS_OPER);
1811         }
1812         if (rdev->wiphy.max_sched_scan_reqs)
1813                 CMD(sched_scan_start, START_SCHED_SCAN);
1814         CMD(probe_client, PROBE_CLIENT);
1815         CMD(set_noack_map, SET_NOACK_MAP);
1816         if (rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) {
1817                 i++;
1818                 if (nla_put_u32(msg, i, NL80211_CMD_REGISTER_BEACONS))
1819                         goto nla_put_failure;
1820         }
1821         CMD(start_p2p_device, START_P2P_DEVICE);
1822         CMD(set_mcast_rate, SET_MCAST_RATE);
1823 #ifdef CONFIG_NL80211_TESTMODE
1824         CMD(testmode_cmd, TESTMODE);
1825 #endif
1826
1827         if (rdev->ops->connect || rdev->ops->auth) {
1828                 i++;
1829                 if (nla_put_u32(msg, i, NL80211_CMD_CONNECT))
1830                         goto nla_put_failure;
1831         }
1832
1833         if (rdev->ops->disconnect || rdev->ops->deauth) {
1834                 i++;
1835                 if (nla_put_u32(msg, i, NL80211_CMD_DISCONNECT))
1836                         goto nla_put_failure;
1837         }
1838
1839         return i;
1840  nla_put_failure:
1841         return -ENOBUFS;
1842 }
1843
1844 static int
1845 nl80211_send_pmsr_ftm_capa(const struct cfg80211_pmsr_capabilities *cap,
1846                            struct sk_buff *msg)
1847 {
1848         struct nlattr *ftm;
1849
1850         if (!cap->ftm.supported)
1851                 return 0;
1852
1853         ftm = nla_nest_start_noflag(msg, NL80211_PMSR_TYPE_FTM);
1854         if (!ftm)
1855                 return -ENOBUFS;
1856
1857         if (cap->ftm.asap && nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_ASAP))
1858                 return -ENOBUFS;
1859         if (cap->ftm.non_asap &&
1860             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_NON_ASAP))
1861                 return -ENOBUFS;
1862         if (cap->ftm.request_lci &&
1863             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_REQ_LCI))
1864                 return -ENOBUFS;
1865         if (cap->ftm.request_civicloc &&
1866             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_REQ_CIVICLOC))
1867                 return -ENOBUFS;
1868         if (nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_PREAMBLES,
1869                         cap->ftm.preambles))
1870                 return -ENOBUFS;
1871         if (nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_BANDWIDTHS,
1872                         cap->ftm.bandwidths))
1873                 return -ENOBUFS;
1874         if (cap->ftm.max_bursts_exponent >= 0 &&
1875             nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_MAX_BURSTS_EXPONENT,
1876                         cap->ftm.max_bursts_exponent))
1877                 return -ENOBUFS;
1878         if (cap->ftm.max_ftms_per_burst &&
1879             nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_MAX_FTMS_PER_BURST,
1880                         cap->ftm.max_ftms_per_burst))
1881                 return -ENOBUFS;
1882
1883         nla_nest_end(msg, ftm);
1884         return 0;
1885 }
1886
1887 static int nl80211_send_pmsr_capa(struct cfg80211_registered_device *rdev,
1888                                   struct sk_buff *msg)
1889 {
1890         const struct cfg80211_pmsr_capabilities *cap = rdev->wiphy.pmsr_capa;
1891         struct nlattr *pmsr, *caps;
1892
1893         if (!cap)
1894                 return 0;
1895
1896         /*
1897          * we don't need to clean up anything here since the caller
1898          * will genlmsg_cancel() if we fail
1899          */
1900
1901         pmsr = nla_nest_start_noflag(msg, NL80211_ATTR_PEER_MEASUREMENTS);
1902         if (!pmsr)
1903                 return -ENOBUFS;
1904
1905         if (nla_put_u32(msg, NL80211_PMSR_ATTR_MAX_PEERS, cap->max_peers))
1906                 return -ENOBUFS;
1907
1908         if (cap->report_ap_tsf &&
1909             nla_put_flag(msg, NL80211_PMSR_ATTR_REPORT_AP_TSF))
1910                 return -ENOBUFS;
1911
1912         if (cap->randomize_mac_addr &&
1913             nla_put_flag(msg, NL80211_PMSR_ATTR_RANDOMIZE_MAC_ADDR))
1914                 return -ENOBUFS;
1915
1916         caps = nla_nest_start_noflag(msg, NL80211_PMSR_ATTR_TYPE_CAPA);
1917         if (!caps)
1918                 return -ENOBUFS;
1919
1920         if (nl80211_send_pmsr_ftm_capa(cap, msg))
1921                 return -ENOBUFS;
1922
1923         nla_nest_end(msg, caps);
1924         nla_nest_end(msg, pmsr);
1925
1926         return 0;
1927 }
1928
1929 static int
1930 nl80211_put_iftype_akm_suites(struct cfg80211_registered_device *rdev,
1931                               struct sk_buff *msg)
1932 {
1933         int i;
1934         struct nlattr *nested, *nested_akms;
1935         const struct wiphy_iftype_akm_suites *iftype_akms;
1936
1937         if (!rdev->wiphy.num_iftype_akm_suites ||
1938             !rdev->wiphy.iftype_akm_suites)
1939                 return 0;
1940
1941         nested = nla_nest_start(msg, NL80211_ATTR_IFTYPE_AKM_SUITES);
1942         if (!nested)
1943                 return -ENOBUFS;
1944
1945         for (i = 0; i < rdev->wiphy.num_iftype_akm_suites; i++) {
1946                 nested_akms = nla_nest_start(msg, i + 1);
1947                 if (!nested_akms)
1948                         return -ENOBUFS;
1949
1950                 iftype_akms = &rdev->wiphy.iftype_akm_suites[i];
1951
1952                 if (nl80211_put_iftypes(msg, NL80211_IFTYPE_AKM_ATTR_IFTYPES,
1953                                         iftype_akms->iftypes_mask))
1954                         return -ENOBUFS;
1955
1956                 if (nla_put(msg, NL80211_IFTYPE_AKM_ATTR_SUITES,
1957                             sizeof(u32) * iftype_akms->n_akm_suites,
1958                             iftype_akms->akm_suites)) {
1959                         return -ENOBUFS;
1960                 }
1961                 nla_nest_end(msg, nested_akms);
1962         }
1963
1964         nla_nest_end(msg, nested);
1965
1966         return 0;
1967 }
1968
1969 static int
1970 nl80211_put_tid_config_support(struct cfg80211_registered_device *rdev,
1971                                struct sk_buff *msg)
1972 {
1973         struct nlattr *supp;
1974
1975         if (!rdev->wiphy.tid_config_support.vif &&
1976             !rdev->wiphy.tid_config_support.peer)
1977                 return 0;
1978
1979         supp = nla_nest_start(msg, NL80211_ATTR_TID_CONFIG);
1980         if (!supp)
1981                 return -ENOSPC;
1982
1983         if (rdev->wiphy.tid_config_support.vif &&
1984             nla_put_u64_64bit(msg, NL80211_TID_CONFIG_ATTR_VIF_SUPP,
1985                               rdev->wiphy.tid_config_support.vif,
1986                               NL80211_TID_CONFIG_ATTR_PAD))
1987                 goto fail;
1988
1989         if (rdev->wiphy.tid_config_support.peer &&
1990             nla_put_u64_64bit(msg, NL80211_TID_CONFIG_ATTR_PEER_SUPP,
1991                               rdev->wiphy.tid_config_support.peer,
1992                               NL80211_TID_CONFIG_ATTR_PAD))
1993                 goto fail;
1994
1995         /* for now we just use the same value ... makes more sense */
1996         if (nla_put_u8(msg, NL80211_TID_CONFIG_ATTR_RETRY_SHORT,
1997                        rdev->wiphy.tid_config_support.max_retry))
1998                 goto fail;
1999         if (nla_put_u8(msg, NL80211_TID_CONFIG_ATTR_RETRY_LONG,
2000                        rdev->wiphy.tid_config_support.max_retry))
2001                 goto fail;
2002
2003         nla_nest_end(msg, supp);
2004
2005         return 0;
2006 fail:
2007         nla_nest_cancel(msg, supp);
2008         return -ENOBUFS;
2009 }
2010
2011 struct nl80211_dump_wiphy_state {
2012         s64 filter_wiphy;
2013         long start;
2014         long split_start, band_start, chan_start, capa_start;
2015         bool split;
2016 };
2017
2018 static int nl80211_send_wiphy(struct cfg80211_registered_device *rdev,
2019                               enum nl80211_commands cmd,
2020                               struct sk_buff *msg, u32 portid, u32 seq,
2021                               int flags, struct nl80211_dump_wiphy_state *state)
2022 {
2023         void *hdr;
2024         struct nlattr *nl_bands, *nl_band;
2025         struct nlattr *nl_freqs, *nl_freq;
2026         struct nlattr *nl_cmds;
2027         enum nl80211_band band;
2028         struct ieee80211_channel *chan;
2029         int i;
2030         const struct ieee80211_txrx_stypes *mgmt_stypes =
2031                                 rdev->wiphy.mgmt_stypes;
2032         u32 features;
2033
2034         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
2035         if (!hdr)
2036                 return -ENOBUFS;
2037
2038         if (WARN_ON(!state))
2039                 return -EINVAL;
2040
2041         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
2042             nla_put_string(msg, NL80211_ATTR_WIPHY_NAME,
2043                            wiphy_name(&rdev->wiphy)) ||
2044             nla_put_u32(msg, NL80211_ATTR_GENERATION,
2045                         cfg80211_rdev_list_generation))
2046                 goto nla_put_failure;
2047
2048         if (cmd != NL80211_CMD_NEW_WIPHY)
2049                 goto finish;
2050
2051         switch (state->split_start) {
2052         case 0:
2053                 if (nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
2054                                rdev->wiphy.retry_short) ||
2055                     nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
2056                                rdev->wiphy.retry_long) ||
2057                     nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
2058                                 rdev->wiphy.frag_threshold) ||
2059                     nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
2060                                 rdev->wiphy.rts_threshold) ||
2061                     nla_put_u8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
2062                                rdev->wiphy.coverage_class) ||
2063                     nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
2064                                rdev->wiphy.max_scan_ssids) ||
2065                     nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS,
2066                                rdev->wiphy.max_sched_scan_ssids) ||
2067                     nla_put_u16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
2068                                 rdev->wiphy.max_scan_ie_len) ||
2069                     nla_put_u16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN,
2070                                 rdev->wiphy.max_sched_scan_ie_len) ||
2071                     nla_put_u8(msg, NL80211_ATTR_MAX_MATCH_SETS,
2072                                rdev->wiphy.max_match_sets) ||
2073                     nla_put_u32(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_PLANS,
2074                                 rdev->wiphy.max_sched_scan_plans) ||
2075                     nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_INTERVAL,
2076                                 rdev->wiphy.max_sched_scan_plan_interval) ||
2077                     nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_ITERATIONS,
2078                                 rdev->wiphy.max_sched_scan_plan_iterations))
2079                         goto nla_put_failure;
2080
2081                 if ((rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) &&
2082                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_IBSS_RSN))
2083                         goto nla_put_failure;
2084                 if ((rdev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) &&
2085                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_MESH_AUTH))
2086                         goto nla_put_failure;
2087                 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
2088                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_AP_UAPSD))
2089                         goto nla_put_failure;
2090                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) &&
2091                     nla_put_flag(msg, NL80211_ATTR_ROAM_SUPPORT))
2092                         goto nla_put_failure;
2093                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) &&
2094                     nla_put_flag(msg, NL80211_ATTR_TDLS_SUPPORT))
2095                         goto nla_put_failure;
2096                 if ((rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) &&
2097                     nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP))
2098                         goto nla_put_failure;
2099                 state->split_start++;
2100                 if (state->split)
2101                         break;
2102                 /* fall through */
2103         case 1:
2104                 if (nla_put(msg, NL80211_ATTR_CIPHER_SUITES,
2105                             sizeof(u32) * rdev->wiphy.n_cipher_suites,
2106                             rdev->wiphy.cipher_suites))
2107                         goto nla_put_failure;
2108
2109                 if (nla_put_u8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
2110                                rdev->wiphy.max_num_pmkids))
2111                         goto nla_put_failure;
2112
2113                 if ((rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
2114                     nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE))
2115                         goto nla_put_failure;
2116
2117                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX,
2118                                 rdev->wiphy.available_antennas_tx) ||
2119                     nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX,
2120                                 rdev->wiphy.available_antennas_rx))
2121                         goto nla_put_failure;
2122
2123                 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) &&
2124                     nla_put_u32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD,
2125                                 rdev->wiphy.probe_resp_offload))
2126                         goto nla_put_failure;
2127
2128                 if ((rdev->wiphy.available_antennas_tx ||
2129                      rdev->wiphy.available_antennas_rx) &&
2130                     rdev->ops->get_antenna) {
2131                         u32 tx_ant = 0, rx_ant = 0;
2132                         int res;
2133
2134                         res = rdev_get_antenna(rdev, &tx_ant, &rx_ant);
2135                         if (!res) {
2136                                 if (nla_put_u32(msg,
2137                                                 NL80211_ATTR_WIPHY_ANTENNA_TX,
2138                                                 tx_ant) ||
2139                                     nla_put_u32(msg,
2140                                                 NL80211_ATTR_WIPHY_ANTENNA_RX,
2141                                                 rx_ant))
2142                                         goto nla_put_failure;
2143                         }
2144                 }
2145
2146                 state->split_start++;
2147                 if (state->split)
2148                         break;
2149                 /* fall through */
2150         case 2:
2151                 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES,
2152                                         rdev->wiphy.interface_modes))
2153                                 goto nla_put_failure;
2154                 state->split_start++;
2155                 if (state->split)
2156                         break;
2157                 /* fall through */
2158         case 3:
2159                 nl_bands = nla_nest_start_noflag(msg,
2160                                                  NL80211_ATTR_WIPHY_BANDS);
2161                 if (!nl_bands)
2162                         goto nla_put_failure;
2163
2164                 for (band = state->band_start;
2165                      band < NUM_NL80211_BANDS; band++) {
2166                         struct ieee80211_supported_band *sband;
2167
2168                         sband = rdev->wiphy.bands[band];
2169
2170                         if (!sband)
2171                                 continue;
2172
2173                         nl_band = nla_nest_start_noflag(msg, band);
2174                         if (!nl_band)
2175                                 goto nla_put_failure;
2176
2177                         switch (state->chan_start) {
2178                         case 0:
2179                                 if (nl80211_send_band_rateinfo(msg, sband))
2180                                         goto nla_put_failure;
2181                                 state->chan_start++;
2182                                 if (state->split)
2183                                         break;
2184                                 /* fall through */
2185                         default:
2186                                 /* add frequencies */
2187                                 nl_freqs = nla_nest_start_noflag(msg,
2188                                                                  NL80211_BAND_ATTR_FREQS);
2189                                 if (!nl_freqs)
2190                                         goto nla_put_failure;
2191
2192                                 for (i = state->chan_start - 1;
2193                                      i < sband->n_channels;
2194                                      i++) {
2195                                         nl_freq = nla_nest_start_noflag(msg,
2196                                                                         i);
2197                                         if (!nl_freq)
2198                                                 goto nla_put_failure;
2199
2200                                         chan = &sband->channels[i];
2201
2202                                         if (nl80211_msg_put_channel(
2203                                                         msg, &rdev->wiphy, chan,
2204                                                         state->split))
2205                                                 goto nla_put_failure;
2206
2207                                         nla_nest_end(msg, nl_freq);
2208                                         if (state->split)
2209                                                 break;
2210                                 }
2211                                 if (i < sband->n_channels)
2212                                         state->chan_start = i + 2;
2213                                 else
2214                                         state->chan_start = 0;
2215                                 nla_nest_end(msg, nl_freqs);
2216                         }
2217
2218                         nla_nest_end(msg, nl_band);
2219
2220                         if (state->split) {
2221                                 /* start again here */
2222                                 if (state->chan_start)
2223                                         band--;
2224                                 break;
2225                         }
2226                 }
2227                 nla_nest_end(msg, nl_bands);
2228
2229                 if (band < NUM_NL80211_BANDS)
2230                         state->band_start = band + 1;
2231                 else
2232                         state->band_start = 0;
2233
2234                 /* if bands & channels are done, continue outside */
2235                 if (state->band_start == 0 && state->chan_start == 0)
2236                         state->split_start++;
2237                 if (state->split)
2238                         break;
2239                 /* fall through */
2240         case 4:
2241                 nl_cmds = nla_nest_start_noflag(msg,
2242                                                 NL80211_ATTR_SUPPORTED_COMMANDS);
2243                 if (!nl_cmds)
2244                         goto nla_put_failure;
2245
2246                 i = nl80211_add_commands_unsplit(rdev, msg);
2247                 if (i < 0)
2248                         goto nla_put_failure;
2249                 if (state->split) {
2250                         CMD(crit_proto_start, CRIT_PROTOCOL_START);
2251                         CMD(crit_proto_stop, CRIT_PROTOCOL_STOP);
2252                         if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH)
2253                                 CMD(channel_switch, CHANNEL_SWITCH);
2254                         CMD(set_qos_map, SET_QOS_MAP);
2255                         if (rdev->wiphy.features &
2256                                         NL80211_FEATURE_SUPPORTS_WMM_ADMISSION)
2257                                 CMD(add_tx_ts, ADD_TX_TS);
2258                         CMD(set_multicast_to_unicast, SET_MULTICAST_TO_UNICAST);
2259                         CMD(update_connect_params, UPDATE_CONNECT_PARAMS);
2260                         CMD(update_ft_ies, UPDATE_FT_IES);
2261                 }
2262 #undef CMD
2263
2264                 nla_nest_end(msg, nl_cmds);
2265                 state->split_start++;
2266                 if (state->split)
2267                         break;
2268                 /* fall through */
2269         case 5:
2270                 if (rdev->ops->remain_on_channel &&
2271                     (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) &&
2272                     nla_put_u32(msg,
2273                                 NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
2274                                 rdev->wiphy.max_remain_on_channel_duration))
2275                         goto nla_put_failure;
2276
2277                 if ((rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) &&
2278                     nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK))
2279                         goto nla_put_failure;
2280
2281                 if (nl80211_send_mgmt_stypes(msg, mgmt_stypes))
2282                         goto nla_put_failure;
2283                 state->split_start++;
2284                 if (state->split)
2285                         break;
2286                 /* fall through */
2287         case 6:
2288 #ifdef CONFIG_PM
2289                 if (nl80211_send_wowlan(msg, rdev, state->split))
2290                         goto nla_put_failure;
2291                 state->split_start++;
2292                 if (state->split)
2293                         break;
2294 #else
2295                 state->split_start++;
2296 #endif
2297                 /* fall through */
2298         case 7:
2299                 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES,
2300                                         rdev->wiphy.software_iftypes))
2301                         goto nla_put_failure;
2302
2303                 if (nl80211_put_iface_combinations(&rdev->wiphy, msg,
2304                                                    state->split))
2305                         goto nla_put_failure;
2306
2307                 state->split_start++;
2308                 if (state->split)
2309                         break;
2310                 /* fall through */
2311         case 8:
2312                 if ((rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) &&
2313                     nla_put_u32(msg, NL80211_ATTR_DEVICE_AP_SME,
2314                                 rdev->wiphy.ap_sme_capa))
2315                         goto nla_put_failure;
2316
2317                 features = rdev->wiphy.features;
2318                 /*
2319                  * We can only add the per-channel limit information if the
2320                  * dump is split, otherwise it makes it too big. Therefore
2321                  * only advertise it in that case.
2322                  */
2323                 if (state->split)
2324                         features |= NL80211_FEATURE_ADVERTISE_CHAN_LIMITS;
2325                 if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS, features))
2326                         goto nla_put_failure;
2327
2328                 if (rdev->wiphy.ht_capa_mod_mask &&
2329                     nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK,
2330                             sizeof(*rdev->wiphy.ht_capa_mod_mask),
2331                             rdev->wiphy.ht_capa_mod_mask))
2332                         goto nla_put_failure;
2333
2334                 if (rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME &&
2335                     rdev->wiphy.max_acl_mac_addrs &&
2336                     nla_put_u32(msg, NL80211_ATTR_MAC_ACL_MAX,
2337                                 rdev->wiphy.max_acl_mac_addrs))
2338                         goto nla_put_failure;
2339
2340                 /*
2341                  * Any information below this point is only available to
2342                  * applications that can deal with it being split. This
2343                  * helps ensure that newly added capabilities don't break
2344                  * older tools by overrunning their buffers.
2345                  *
2346                  * We still increment split_start so that in the split
2347                  * case we'll continue with more data in the next round,
2348                  * but break unconditionally so unsplit data stops here.
2349                  */
2350                 state->split_start++;
2351                 break;
2352         case 9:
2353                 if (rdev->wiphy.extended_capabilities &&
2354                     (nla_put(msg, NL80211_ATTR_EXT_CAPA,
2355                              rdev->wiphy.extended_capabilities_len,
2356                              rdev->wiphy.extended_capabilities) ||
2357                      nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
2358                              rdev->wiphy.extended_capabilities_len,
2359                              rdev->wiphy.extended_capabilities_mask)))
2360                         goto nla_put_failure;
2361
2362                 if (rdev->wiphy.vht_capa_mod_mask &&
2363                     nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK,
2364                             sizeof(*rdev->wiphy.vht_capa_mod_mask),
2365                             rdev->wiphy.vht_capa_mod_mask))
2366                         goto nla_put_failure;
2367
2368                 if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN,
2369                             rdev->wiphy.perm_addr))
2370                         goto nla_put_failure;
2371
2372                 if (!is_zero_ether_addr(rdev->wiphy.addr_mask) &&
2373                     nla_put(msg, NL80211_ATTR_MAC_MASK, ETH_ALEN,
2374                             rdev->wiphy.addr_mask))
2375                         goto nla_put_failure;
2376
2377                 if (rdev->wiphy.n_addresses > 1) {
2378                         void *attr;
2379
2380                         attr = nla_nest_start(msg, NL80211_ATTR_MAC_ADDRS);
2381                         if (!attr)
2382                                 goto nla_put_failure;
2383
2384                         for (i = 0; i < rdev->wiphy.n_addresses; i++)
2385                                 if (nla_put(msg, i + 1, ETH_ALEN,
2386                                             rdev->wiphy.addresses[i].addr))
2387                                         goto nla_put_failure;
2388
2389                         nla_nest_end(msg, attr);
2390                 }
2391
2392                 state->split_start++;
2393                 break;
2394         case 10:
2395                 if (nl80211_send_coalesce(msg, rdev))
2396                         goto nla_put_failure;
2397
2398                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ) &&
2399                     (nla_put_flag(msg, NL80211_ATTR_SUPPORT_5_MHZ) ||
2400                      nla_put_flag(msg, NL80211_ATTR_SUPPORT_10_MHZ)))
2401                         goto nla_put_failure;
2402
2403                 if (rdev->wiphy.max_ap_assoc_sta &&
2404                     nla_put_u32(msg, NL80211_ATTR_MAX_AP_ASSOC_STA,
2405                                 rdev->wiphy.max_ap_assoc_sta))
2406                         goto nla_put_failure;
2407
2408                 state->split_start++;
2409                 break;
2410         case 11:
2411                 if (rdev->wiphy.n_vendor_commands) {
2412                         const struct nl80211_vendor_cmd_info *info;
2413                         struct nlattr *nested;
2414
2415                         nested = nla_nest_start_noflag(msg,
2416                                                        NL80211_ATTR_VENDOR_DATA);
2417                         if (!nested)
2418                                 goto nla_put_failure;
2419
2420                         for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
2421                                 info = &rdev->wiphy.vendor_commands[i].info;
2422                                 if (nla_put(msg, i + 1, sizeof(*info), info))
2423                                         goto nla_put_failure;
2424                         }
2425                         nla_nest_end(msg, nested);
2426                 }
2427
2428                 if (rdev->wiphy.n_vendor_events) {
2429                         const struct nl80211_vendor_cmd_info *info;
2430                         struct nlattr *nested;
2431
2432                         nested = nla_nest_start_noflag(msg,
2433                                                        NL80211_ATTR_VENDOR_EVENTS);
2434                         if (!nested)
2435                                 goto nla_put_failure;
2436
2437                         for (i = 0; i < rdev->wiphy.n_vendor_events; i++) {
2438                                 info = &rdev->wiphy.vendor_events[i];
2439                                 if (nla_put(msg, i + 1, sizeof(*info), info))
2440                                         goto nla_put_failure;
2441                         }
2442                         nla_nest_end(msg, nested);
2443                 }
2444                 state->split_start++;
2445                 break;
2446         case 12:
2447                 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH &&
2448                     nla_put_u8(msg, NL80211_ATTR_MAX_CSA_COUNTERS,
2449                                rdev->wiphy.max_num_csa_counters))
2450                         goto nla_put_failure;
2451
2452                 if (rdev->wiphy.regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
2453                     nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
2454                         goto nla_put_failure;
2455
2456                 if (rdev->wiphy.max_sched_scan_reqs &&
2457                     nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_MAX_REQS,
2458                                 rdev->wiphy.max_sched_scan_reqs))
2459                         goto nla_put_failure;
2460
2461                 if (nla_put(msg, NL80211_ATTR_EXT_FEATURES,
2462                             sizeof(rdev->wiphy.ext_features),
2463                             rdev->wiphy.ext_features))
2464                         goto nla_put_failure;
2465
2466                 if (rdev->wiphy.bss_select_support) {
2467                         struct nlattr *nested;
2468                         u32 bss_select_support = rdev->wiphy.bss_select_support;
2469
2470                         nested = nla_nest_start_noflag(msg,
2471                                                        NL80211_ATTR_BSS_SELECT);
2472                         if (!nested)
2473                                 goto nla_put_failure;
2474
2475                         i = 0;
2476                         while (bss_select_support) {
2477                                 if ((bss_select_support & 1) &&
2478                                     nla_put_flag(msg, i))
2479                                         goto nla_put_failure;
2480                                 i++;
2481                                 bss_select_support >>= 1;
2482                         }
2483                         nla_nest_end(msg, nested);
2484                 }
2485
2486                 state->split_start++;
2487                 break;
2488         case 13:
2489                 if (rdev->wiphy.num_iftype_ext_capab &&
2490                     rdev->wiphy.iftype_ext_capab) {
2491                         struct nlattr *nested_ext_capab, *nested;
2492
2493                         nested = nla_nest_start_noflag(msg,
2494                                                        NL80211_ATTR_IFTYPE_EXT_CAPA);
2495                         if (!nested)
2496                                 goto nla_put_failure;
2497
2498                         for (i = state->capa_start;
2499                              i < rdev->wiphy.num_iftype_ext_capab; i++) {
2500                                 const struct wiphy_iftype_ext_capab *capab;
2501
2502                                 capab = &rdev->wiphy.iftype_ext_capab[i];
2503
2504                                 nested_ext_capab = nla_nest_start_noflag(msg,
2505                                                                          i);
2506                                 if (!nested_ext_capab ||
2507                                     nla_put_u32(msg, NL80211_ATTR_IFTYPE,
2508                                                 capab->iftype) ||
2509                                     nla_put(msg, NL80211_ATTR_EXT_CAPA,
2510                                             capab->extended_capabilities_len,
2511                                             capab->extended_capabilities) ||
2512                                     nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
2513                                             capab->extended_capabilities_len,
2514                                             capab->extended_capabilities_mask))
2515                                         goto nla_put_failure;
2516
2517                                 nla_nest_end(msg, nested_ext_capab);
2518                                 if (state->split)
2519                                         break;
2520                         }
2521                         nla_nest_end(msg, nested);
2522                         if (i < rdev->wiphy.num_iftype_ext_capab) {
2523                                 state->capa_start = i + 1;
2524                                 break;
2525                         }
2526                 }
2527
2528                 if (nla_put_u32(msg, NL80211_ATTR_BANDS,
2529                                 rdev->wiphy.nan_supported_bands))
2530                         goto nla_put_failure;
2531
2532                 if (wiphy_ext_feature_isset(&rdev->wiphy,
2533                                             NL80211_EXT_FEATURE_TXQS)) {
2534                         struct cfg80211_txq_stats txqstats = {};
2535                         int res;
2536
2537                         res = rdev_get_txq_stats(rdev, NULL, &txqstats);
2538                         if (!res &&
2539                             !nl80211_put_txq_stats(msg, &txqstats,
2540                                                    NL80211_ATTR_TXQ_STATS))
2541                                 goto nla_put_failure;
2542
2543                         if (nla_put_u32(msg, NL80211_ATTR_TXQ_LIMIT,
2544                                         rdev->wiphy.txq_limit))
2545                                 goto nla_put_failure;
2546                         if (nla_put_u32(msg, NL80211_ATTR_TXQ_MEMORY_LIMIT,
2547                                         rdev->wiphy.txq_memory_limit))
2548                                 goto nla_put_failure;
2549                         if (nla_put_u32(msg, NL80211_ATTR_TXQ_QUANTUM,
2550                                         rdev->wiphy.txq_quantum))
2551                                 goto nla_put_failure;
2552                 }
2553
2554                 state->split_start++;
2555                 break;
2556         case 14:
2557                 if (nl80211_send_pmsr_capa(rdev, msg))
2558                         goto nla_put_failure;
2559
2560                 state->split_start++;
2561                 break;
2562         case 15:
2563                 if (rdev->wiphy.akm_suites &&
2564                     nla_put(msg, NL80211_ATTR_AKM_SUITES,
2565                             sizeof(u32) * rdev->wiphy.n_akm_suites,
2566                             rdev->wiphy.akm_suites))
2567                         goto nla_put_failure;
2568
2569                 if (nl80211_put_iftype_akm_suites(rdev, msg))
2570                         goto nla_put_failure;
2571
2572                 if (nl80211_put_tid_config_support(rdev, msg))
2573                         goto nla_put_failure;
2574
2575                 /* done */
2576                 state->split_start = 0;
2577                 break;
2578         }
2579  finish:
2580         genlmsg_end(msg, hdr);
2581         return 0;
2582
2583  nla_put_failure:
2584         genlmsg_cancel(msg, hdr);
2585         return -EMSGSIZE;
2586 }
2587
2588 static int nl80211_dump_wiphy_parse(struct sk_buff *skb,
2589                                     struct netlink_callback *cb,
2590                                     struct nl80211_dump_wiphy_state *state)
2591 {
2592         struct nlattr **tb = kcalloc(NUM_NL80211_ATTR, sizeof(*tb), GFP_KERNEL);
2593         int ret;
2594
2595         if (!tb)
2596                 return -ENOMEM;
2597
2598         ret = nlmsg_parse_deprecated(cb->nlh,
2599                                      GENL_HDRLEN + nl80211_fam.hdrsize,
2600                                      tb, nl80211_fam.maxattr,
2601                                      nl80211_policy, NULL);
2602         /* ignore parse errors for backward compatibility */
2603         if (ret) {
2604                 ret = 0;
2605                 goto out;
2606         }
2607
2608         state->split = tb[NL80211_ATTR_SPLIT_WIPHY_DUMP];
2609         if (tb[NL80211_ATTR_WIPHY])
2610                 state->filter_wiphy = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
2611         if (tb[NL80211_ATTR_WDEV])
2612                 state->filter_wiphy = nla_get_u64(tb[NL80211_ATTR_WDEV]) >> 32;
2613         if (tb[NL80211_ATTR_IFINDEX]) {
2614                 struct net_device *netdev;
2615                 struct cfg80211_registered_device *rdev;
2616                 int ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
2617
2618                 netdev = __dev_get_by_index(sock_net(skb->sk), ifidx);
2619                 if (!netdev) {
2620                         ret = -ENODEV;
2621                         goto out;
2622                 }
2623                 if (netdev->ieee80211_ptr) {
2624                         rdev = wiphy_to_rdev(
2625                                 netdev->ieee80211_ptr->wiphy);
2626                         state->filter_wiphy = rdev->wiphy_idx;
2627                 }
2628         }
2629
2630         ret = 0;
2631 out:
2632         kfree(tb);
2633         return ret;
2634 }
2635
2636 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
2637 {
2638         int idx = 0, ret;
2639         struct nl80211_dump_wiphy_state *state = (void *)cb->args[0];
2640         struct cfg80211_registered_device *rdev;
2641
2642         rtnl_lock();
2643         if (!state) {
2644                 state = kzalloc(sizeof(*state), GFP_KERNEL);
2645                 if (!state) {
2646                         rtnl_unlock();
2647                         return -ENOMEM;
2648                 }
2649                 state->filter_wiphy = -1;
2650                 ret = nl80211_dump_wiphy_parse(skb, cb, state);
2651                 if (ret) {
2652                         kfree(state);
2653                         rtnl_unlock();
2654                         return ret;
2655                 }
2656                 cb->args[0] = (long)state;
2657         }
2658
2659         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
2660                 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
2661                         continue;
2662                 if (++idx <= state->start)
2663                         continue;
2664                 if (state->filter_wiphy != -1 &&
2665                     state->filter_wiphy != rdev->wiphy_idx)
2666                         continue;
2667                 /* attempt to fit multiple wiphy data chunks into the skb */
2668                 do {
2669                         ret = nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY,
2670                                                  skb,
2671                                                  NETLINK_CB(cb->skb).portid,
2672                                                  cb->nlh->nlmsg_seq,
2673                                                  NLM_F_MULTI, state);
2674                         if (ret < 0) {
2675                                 /*
2676                                  * If sending the wiphy data didn't fit (ENOBUFS
2677                                  * or EMSGSIZE returned), this SKB is still
2678                                  * empty (so it's not too big because another
2679                                  * wiphy dataset is already in the skb) and
2680                                  * we've not tried to adjust the dump allocation
2681                                  * yet ... then adjust the alloc size to be
2682                                  * bigger, and return 1 but with the empty skb.
2683                                  * This results in an empty message being RX'ed
2684                                  * in userspace, but that is ignored.
2685                                  *
2686                                  * We can then retry with the larger buffer.
2687                                  */
2688                                 if ((ret == -ENOBUFS || ret == -EMSGSIZE) &&
2689                                     !skb->len && !state->split &&
2690                                     cb->min_dump_alloc < 4096) {
2691                                         cb->min_dump_alloc = 4096;
2692                                         state->split_start = 0;
2693                                         rtnl_unlock();
2694                                         return 1;
2695                                 }
2696                                 idx--;
2697                                 break;
2698                         }
2699                 } while (state->split_start > 0);
2700                 break;
2701         }
2702         rtnl_unlock();
2703
2704         state->start = idx;
2705
2706         return skb->len;
2707 }
2708
2709 static int nl80211_dump_wiphy_done(struct netlink_callback *cb)
2710 {
2711         kfree((void *)cb->args[0]);
2712         return 0;
2713 }
2714
2715 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
2716 {
2717         struct sk_buff *msg;
2718         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2719         struct nl80211_dump_wiphy_state state = {};
2720
2721         msg = nlmsg_new(4096, GFP_KERNEL);
2722         if (!msg)
2723                 return -ENOMEM;
2724
2725         if (nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY, msg,
2726                                info->snd_portid, info->snd_seq, 0,
2727                                &state) < 0) {
2728                 nlmsg_free(msg);
2729                 return -ENOBUFS;
2730         }
2731
2732         return genlmsg_reply(msg, info);
2733 }
2734
2735 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
2736         [NL80211_TXQ_ATTR_QUEUE]                = { .type = NLA_U8 },
2737         [NL80211_TXQ_ATTR_TXOP]                 = { .type = NLA_U16 },
2738         [NL80211_TXQ_ATTR_CWMIN]                = { .type = NLA_U16 },
2739         [NL80211_TXQ_ATTR_CWMAX]                = { .type = NLA_U16 },
2740         [NL80211_TXQ_ATTR_AIFS]                 = { .type = NLA_U8 },
2741 };
2742
2743 static int parse_txq_params(struct nlattr *tb[],
2744                             struct ieee80211_txq_params *txq_params)
2745 {
2746         u8 ac;
2747
2748         if (!tb[NL80211_TXQ_ATTR_AC] || !tb[NL80211_TXQ_ATTR_TXOP] ||
2749             !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
2750             !tb[NL80211_TXQ_ATTR_AIFS])
2751                 return -EINVAL;
2752
2753         ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]);
2754         txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
2755         txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
2756         txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
2757         txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
2758
2759         if (ac >= NL80211_NUM_ACS)
2760                 return -EINVAL;
2761         txq_params->ac = array_index_nospec(ac, NL80211_NUM_ACS);
2762         return 0;
2763 }
2764
2765 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
2766 {
2767         /*
2768          * You can only set the channel explicitly for WDS interfaces,
2769          * all others have their channel managed via their respective
2770          * "establish a connection" command (connect, join, ...)
2771          *
2772          * For AP/GO and mesh mode, the channel can be set with the
2773          * channel userspace API, but is only stored and passed to the
2774          * low-level driver when the AP starts or the mesh is joined.
2775          * This is for backward compatibility, userspace can also give
2776          * the channel in the start-ap or join-mesh commands instead.
2777          *
2778          * Monitors are special as they are normally slaved to
2779          * whatever else is going on, so they have their own special
2780          * operation to set the monitor channel if possible.
2781          */
2782         return !wdev ||
2783                 wdev->iftype == NL80211_IFTYPE_AP ||
2784                 wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
2785                 wdev->iftype == NL80211_IFTYPE_MONITOR ||
2786                 wdev->iftype == NL80211_IFTYPE_P2P_GO;
2787 }
2788
2789 int nl80211_parse_chandef(struct cfg80211_registered_device *rdev,
2790                           struct genl_info *info,
2791                           struct cfg80211_chan_def *chandef)
2792 {
2793         struct netlink_ext_ack *extack = info->extack;
2794         struct nlattr **attrs = info->attrs;
2795         u32 control_freq;
2796
2797         if (!attrs[NL80211_ATTR_WIPHY_FREQ])
2798                 return -EINVAL;
2799
2800         control_freq = nla_get_u32(attrs[NL80211_ATTR_WIPHY_FREQ]);
2801
2802         memset(chandef, 0, sizeof(*chandef));
2803
2804         chandef->chan = ieee80211_get_channel(&rdev->wiphy, control_freq);
2805         chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
2806         chandef->center_freq1 = control_freq;
2807         chandef->center_freq2 = 0;
2808
2809         /* Primary channel not allowed */
2810         if (!chandef->chan || chandef->chan->flags & IEEE80211_CHAN_DISABLED) {
2811                 NL_SET_ERR_MSG_ATTR(extack, attrs[NL80211_ATTR_WIPHY_FREQ],
2812                                     "Channel is disabled");
2813                 return -EINVAL;
2814         }
2815
2816         if (attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
2817                 enum nl80211_channel_type chantype;
2818
2819                 chantype = nla_get_u32(attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
2820
2821                 switch (chantype) {
2822                 case NL80211_CHAN_NO_HT:
2823                 case NL80211_CHAN_HT20:
2824                 case NL80211_CHAN_HT40PLUS:
2825                 case NL80211_CHAN_HT40MINUS:
2826                         cfg80211_chandef_create(chandef, chandef->chan,
2827                                                 chantype);
2828                         /* user input for center_freq is incorrect */
2829                         if (attrs[NL80211_ATTR_CENTER_FREQ1] &&
2830                             chandef->center_freq1 != nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ1])) {
2831                                 NL_SET_ERR_MSG_ATTR(extack,
2832                                                     attrs[NL80211_ATTR_CENTER_FREQ1],
2833                                                     "bad center frequency 1");
2834                                 return -EINVAL;
2835                         }
2836                         /* center_freq2 must be zero */
2837                         if (attrs[NL80211_ATTR_CENTER_FREQ2] &&
2838                             nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ2])) {
2839                                 NL_SET_ERR_MSG_ATTR(extack,
2840                                                     attrs[NL80211_ATTR_CENTER_FREQ2],
2841                                                     "center frequency 2 can't be used");
2842                                 return -EINVAL;
2843                         }
2844                         break;
2845                 default:
2846                         NL_SET_ERR_MSG_ATTR(extack,
2847                                             attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE],
2848                                             "invalid channel type");
2849                         return -EINVAL;
2850                 }
2851         } else if (attrs[NL80211_ATTR_CHANNEL_WIDTH]) {
2852                 chandef->width =
2853                         nla_get_u32(attrs[NL80211_ATTR_CHANNEL_WIDTH]);
2854                 if (attrs[NL80211_ATTR_CENTER_FREQ1])
2855                         chandef->center_freq1 =
2856                                 nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ1]);
2857                 if (attrs[NL80211_ATTR_CENTER_FREQ2])
2858                         chandef->center_freq2 =
2859                                 nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ2]);
2860         }
2861
2862         if (info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]) {
2863                 chandef->edmg.channels =
2864                       nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]);
2865
2866                 if (info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG])
2867                         chandef->edmg.bw_config =
2868                      nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG]);
2869         } else {
2870                 chandef->edmg.bw_config = 0;
2871                 chandef->edmg.channels = 0;
2872         }
2873
2874         if (!cfg80211_chandef_valid(chandef)) {
2875                 NL_SET_ERR_MSG(extack, "invalid channel definition");
2876                 return -EINVAL;
2877         }
2878
2879         if (!cfg80211_chandef_usable(&rdev->wiphy, chandef,
2880                                      IEEE80211_CHAN_DISABLED)) {
2881                 NL_SET_ERR_MSG(extack, "(extension) channel is disabled");
2882                 return -EINVAL;
2883         }
2884
2885         if ((chandef->width == NL80211_CHAN_WIDTH_5 ||
2886              chandef->width == NL80211_CHAN_WIDTH_10) &&
2887             !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ)) {
2888                 NL_SET_ERR_MSG(extack, "5/10 MHz not supported");
2889                 return -EINVAL;
2890         }
2891
2892         return 0;
2893 }
2894
2895 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
2896                                  struct net_device *dev,
2897                                  struct genl_info *info)
2898 {
2899         struct cfg80211_chan_def chandef;
2900         int result;
2901         enum nl80211_iftype iftype = NL80211_IFTYPE_MONITOR;
2902         struct wireless_dev *wdev = NULL;
2903
2904         if (dev)
2905                 wdev = dev->ieee80211_ptr;
2906         if (!nl80211_can_set_dev_channel(wdev))
2907                 return -EOPNOTSUPP;
2908         if (wdev)
2909                 iftype = wdev->iftype;
2910
2911         result = nl80211_parse_chandef(rdev, info, &chandef);
2912         if (result)
2913                 return result;
2914
2915         switch (iftype) {
2916         case NL80211_IFTYPE_AP:
2917         case NL80211_IFTYPE_P2P_GO:
2918                 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
2919                                                    iftype)) {
2920                         result = -EINVAL;
2921                         break;
2922                 }
2923                 if (wdev->beacon_interval) {
2924                         if (!dev || !rdev->ops->set_ap_chanwidth ||
2925                             !(rdev->wiphy.features &
2926                               NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE)) {
2927                                 result = -EBUSY;
2928                                 break;
2929                         }
2930
2931                         /* Only allow dynamic channel width changes */
2932                         if (chandef.chan != wdev->preset_chandef.chan) {
2933                                 result = -EBUSY;
2934                                 break;
2935                         }
2936                         result = rdev_set_ap_chanwidth(rdev, dev, &chandef);
2937                         if (result)
2938                                 break;
2939                 }
2940                 wdev->preset_chandef = chandef;
2941                 result = 0;
2942                 break;
2943         case NL80211_IFTYPE_MESH_POINT:
2944                 result = cfg80211_set_mesh_channel(rdev, wdev, &chandef);
2945                 break;
2946         case NL80211_IFTYPE_MONITOR:
2947                 result = cfg80211_set_monitor_channel(rdev, &chandef);
2948                 break;
2949         default:
2950                 result = -EINVAL;
2951         }
2952
2953         return result;
2954 }
2955
2956 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
2957 {
2958         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2959         struct net_device *netdev = info->user_ptr[1];
2960
2961         return __nl80211_set_channel(rdev, netdev, info);
2962 }
2963
2964 static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info)
2965 {
2966         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2967         struct net_device *dev = info->user_ptr[1];
2968         struct wireless_dev *wdev = dev->ieee80211_ptr;
2969         const u8 *bssid;
2970
2971         if (!info->attrs[NL80211_ATTR_MAC])
2972                 return -EINVAL;
2973
2974         if (netif_running(dev))
2975                 return -EBUSY;
2976
2977         if (!rdev->ops->set_wds_peer)
2978                 return -EOPNOTSUPP;
2979
2980         if (wdev->iftype != NL80211_IFTYPE_WDS)
2981                 return -EOPNOTSUPP;
2982
2983         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
2984         return rdev_set_wds_peer(rdev, dev, bssid);
2985 }
2986
2987 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
2988 {
2989         struct cfg80211_registered_device *rdev;
2990         struct net_device *netdev = NULL;
2991         struct wireless_dev *wdev;
2992         int result = 0, rem_txq_params = 0;
2993         struct nlattr *nl_txq_params;
2994         u32 changed;
2995         u8 retry_short = 0, retry_long = 0;
2996         u32 frag_threshold = 0, rts_threshold = 0;
2997         u8 coverage_class = 0;
2998         u32 txq_limit = 0, txq_memory_limit = 0, txq_quantum = 0;
2999
3000         ASSERT_RTNL();
3001
3002         /*
3003          * Try to find the wiphy and netdev. Normally this
3004          * function shouldn't need the netdev, but this is
3005          * done for backward compatibility -- previously
3006          * setting the channel was done per wiphy, but now
3007          * it is per netdev. Previous userland like hostapd
3008          * also passed a netdev to set_wiphy, so that it is
3009          * possible to let that go to the right netdev!
3010          */
3011
3012         if (info->attrs[NL80211_ATTR_IFINDEX]) {
3013                 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
3014
3015                 netdev = __dev_get_by_index(genl_info_net(info), ifindex);
3016                 if (netdev && netdev->ieee80211_ptr)
3017                         rdev = wiphy_to_rdev(netdev->ieee80211_ptr->wiphy);
3018                 else
3019                         netdev = NULL;
3020         }
3021
3022         if (!netdev) {
3023                 rdev = __cfg80211_rdev_from_attrs(genl_info_net(info),
3024                                                   info->attrs);
3025                 if (IS_ERR(rdev))
3026                         return PTR_ERR(rdev);
3027                 wdev = NULL;
3028                 netdev = NULL;
3029                 result = 0;
3030         } else
3031                 wdev = netdev->ieee80211_ptr;
3032
3033         /*
3034          * end workaround code, by now the rdev is available
3035          * and locked, and wdev may or may not be NULL.
3036          */
3037
3038         if (info->attrs[NL80211_ATTR_WIPHY_NAME])
3039                 result = cfg80211_dev_rename(
3040                         rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
3041
3042         if (result)
3043                 return result;
3044
3045         if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
3046                 struct ieee80211_txq_params txq_params;
3047                 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
3048
3049                 if (!rdev->ops->set_txq_params)
3050                         return -EOPNOTSUPP;
3051
3052                 if (!netdev)
3053                         return -EINVAL;
3054
3055                 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3056                     netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3057                         return -EINVAL;
3058
3059                 if (!netif_running(netdev))
3060                         return -ENETDOWN;
3061
3062                 nla_for_each_nested(nl_txq_params,
3063                                     info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
3064                                     rem_txq_params) {
3065                         result = nla_parse_nested_deprecated(tb,
3066                                                              NL80211_TXQ_ATTR_MAX,
3067                                                              nl_txq_params,
3068                                                              txq_params_policy,
3069                                                              info->extack);
3070                         if (result)
3071                                 return result;
3072                         result = parse_txq_params(tb, &txq_params);
3073                         if (result)
3074                                 return result;
3075
3076                         result = rdev_set_txq_params(rdev, netdev,
3077                                                      &txq_params);
3078                         if (result)
3079                                 return result;
3080                 }
3081         }
3082
3083         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
3084                 result = __nl80211_set_channel(
3085                         rdev,
3086                         nl80211_can_set_dev_channel(wdev) ? netdev : NULL,
3087                         info);
3088                 if (result)
3089                         return result;
3090         }
3091
3092         if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
3093                 struct wireless_dev *txp_wdev = wdev;
3094                 enum nl80211_tx_power_setting type;
3095                 int idx, mbm = 0;
3096
3097                 if (!(rdev->wiphy.features & NL80211_FEATURE_VIF_TXPOWER))
3098                         txp_wdev = NULL;
3099
3100                 if (!rdev->ops->set_tx_power)
3101                         return -EOPNOTSUPP;
3102
3103                 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
3104                 type = nla_get_u32(info->attrs[idx]);
3105
3106                 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
3107                     (type != NL80211_TX_POWER_AUTOMATIC))
3108                         return -EINVAL;
3109
3110                 if (type != NL80211_TX_POWER_AUTOMATIC) {
3111                         idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
3112                         mbm = nla_get_u32(info->attrs[idx]);
3113                 }
3114
3115                 result = rdev_set_tx_power(rdev, txp_wdev, type, mbm);
3116                 if (result)
3117                         return result;
3118         }
3119
3120         if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
3121             info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
3122                 u32 tx_ant, rx_ant;
3123
3124                 if ((!rdev->wiphy.available_antennas_tx &&
3125                      !rdev->wiphy.available_antennas_rx) ||
3126                     !rdev->ops->set_antenna)
3127                         return -EOPNOTSUPP;
3128
3129                 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
3130                 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
3131
3132                 /* reject antenna configurations which don't match the
3133                  * available antenna masks, except for the "all" mask */
3134                 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) ||
3135                     (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx)))
3136                         return -EINVAL;
3137
3138                 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx;
3139                 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx;
3140
3141                 result = rdev_set_antenna(rdev, tx_ant, rx_ant);
3142                 if (result)
3143                         return result;
3144         }
3145
3146         changed = 0;
3147
3148         if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
3149                 retry_short = nla_get_u8(
3150                         info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
3151
3152                 changed |= WIPHY_PARAM_RETRY_SHORT;
3153         }
3154
3155         if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
3156                 retry_long = nla_get_u8(
3157                         info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
3158
3159                 changed |= WIPHY_PARAM_RETRY_LONG;
3160         }
3161
3162         if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
3163                 frag_threshold = nla_get_u32(
3164                         info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
3165                 if (frag_threshold < 256)
3166                         return -EINVAL;
3167
3168                 if (frag_threshold != (u32) -1) {
3169                         /*
3170                          * Fragments (apart from the last one) are required to
3171                          * have even length. Make the fragmentation code
3172                          * simpler by stripping LSB should someone try to use
3173                          * odd threshold value.
3174                          */
3175                         frag_threshold &= ~0x1;
3176                 }
3177                 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
3178         }
3179
3180         if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
3181                 rts_threshold = nla_get_u32(
3182                         info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
3183                 changed |= WIPHY_PARAM_RTS_THRESHOLD;
3184         }
3185
3186         if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
3187                 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK])
3188                         return -EINVAL;
3189
3190                 coverage_class = nla_get_u8(
3191                         info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
3192                 changed |= WIPHY_PARAM_COVERAGE_CLASS;
3193         }
3194
3195         if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK]) {
3196                 if (!(rdev->wiphy.features & NL80211_FEATURE_ACKTO_ESTIMATION))
3197                         return -EOPNOTSUPP;
3198
3199                 changed |= WIPHY_PARAM_DYN_ACK;
3200         }
3201
3202         if (info->attrs[NL80211_ATTR_TXQ_LIMIT]) {
3203                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
3204                                              NL80211_EXT_FEATURE_TXQS))
3205                         return -EOPNOTSUPP;
3206                 txq_limit = nla_get_u32(
3207                         info->attrs[NL80211_ATTR_TXQ_LIMIT]);
3208                 changed |= WIPHY_PARAM_TXQ_LIMIT;
3209         }
3210
3211         if (info->attrs[NL80211_ATTR_TXQ_MEMORY_LIMIT]) {
3212                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
3213                                              NL80211_EXT_FEATURE_TXQS))
3214                         return -EOPNOTSUPP;
3215                 txq_memory_limit = nla_get_u32(
3216                         info->attrs[NL80211_ATTR_TXQ_MEMORY_LIMIT]);
3217                 changed |= WIPHY_PARAM_TXQ_MEMORY_LIMIT;
3218         }
3219
3220         if (info->attrs[NL80211_ATTR_TXQ_QUANTUM]) {
3221                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
3222                                              NL80211_EXT_FEATURE_TXQS))
3223                         return -EOPNOTSUPP;
3224                 txq_quantum = nla_get_u32(
3225                         info->attrs[NL80211_ATTR_TXQ_QUANTUM]);
3226                 changed |= WIPHY_PARAM_TXQ_QUANTUM;
3227         }
3228
3229         if (changed) {
3230                 u8 old_retry_short, old_retry_long;
3231                 u32 old_frag_threshold, old_rts_threshold;
3232                 u8 old_coverage_class;
3233                 u32 old_txq_limit, old_txq_memory_limit, old_txq_quantum;
3234
3235                 if (!rdev->ops->set_wiphy_params)
3236                         return -EOPNOTSUPP;
3237
3238                 old_retry_short = rdev->wiphy.retry_short;
3239                 old_retry_long = rdev->wiphy.retry_long;
3240                 old_frag_threshold = rdev->wiphy.frag_threshold;
3241                 old_rts_threshold = rdev->wiphy.rts_threshold;
3242                 old_coverage_class = rdev->wiphy.coverage_class;
3243                 old_txq_limit = rdev->wiphy.txq_limit;
3244                 old_txq_memory_limit = rdev->wiphy.txq_memory_limit;
3245                 old_txq_quantum = rdev->wiphy.txq_quantum;
3246
3247                 if (changed & WIPHY_PARAM_RETRY_SHORT)
3248                         rdev->wiphy.retry_short = retry_short;
3249                 if (changed & WIPHY_PARAM_RETRY_LONG)
3250                         rdev->wiphy.retry_long = retry_long;
3251                 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
3252                         rdev->wiphy.frag_threshold = frag_threshold;
3253                 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
3254                         rdev->wiphy.rts_threshold = rts_threshold;
3255                 if (changed & WIPHY_PARAM_COVERAGE_CLASS)
3256                         rdev->wiphy.coverage_class = coverage_class;
3257                 if (changed & WIPHY_PARAM_TXQ_LIMIT)
3258                         rdev->wiphy.txq_limit = txq_limit;
3259                 if (changed & WIPHY_PARAM_TXQ_MEMORY_LIMIT)
3260                         rdev->wiphy.txq_memory_limit = txq_memory_limit;
3261                 if (changed & WIPHY_PARAM_TXQ_QUANTUM)
3262                         rdev->wiphy.txq_quantum = txq_quantum;
3263
3264                 result = rdev_set_wiphy_params(rdev, changed);
3265                 if (result) {
3266                         rdev->wiphy.retry_short = old_retry_short;
3267                         rdev->wiphy.retry_long = old_retry_long;
3268                         rdev->wiphy.frag_threshold = old_frag_threshold;
3269                         rdev->wiphy.rts_threshold = old_rts_threshold;
3270                         rdev->wiphy.coverage_class = old_coverage_class;
3271                         rdev->wiphy.txq_limit = old_txq_limit;
3272                         rdev->wiphy.txq_memory_limit = old_txq_memory_limit;
3273                         rdev->wiphy.txq_quantum = old_txq_quantum;
3274                         return result;
3275                 }
3276         }
3277         return 0;
3278 }
3279
3280 static int nl80211_send_chandef(struct sk_buff *msg,
3281                                 const struct cfg80211_chan_def *chandef)
3282 {
3283         if (WARN_ON(!cfg80211_chandef_valid(chandef)))
3284                 return -EINVAL;
3285
3286         if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
3287                         chandef->chan->center_freq))
3288                 return -ENOBUFS;
3289         switch (chandef->width) {
3290         case NL80211_CHAN_WIDTH_20_NOHT:
3291         case NL80211_CHAN_WIDTH_20:
3292         case NL80211_CHAN_WIDTH_40:
3293                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
3294                                 cfg80211_get_chandef_type(chandef)))
3295                         return -ENOBUFS;
3296                 break;
3297         default:
3298                 break;
3299         }
3300         if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, chandef->width))
3301                 return -ENOBUFS;
3302         if (nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1, chandef->center_freq1))
3303                 return -ENOBUFS;
3304         if (chandef->center_freq2 &&
3305             nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2, chandef->center_freq2))
3306                 return -ENOBUFS;
3307         return 0;
3308 }
3309
3310 static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags,
3311                               struct cfg80211_registered_device *rdev,
3312                               struct wireless_dev *wdev,
3313                               enum nl80211_commands cmd)
3314 {
3315         struct net_device *dev = wdev->netdev;
3316         void *hdr;
3317
3318         WARN_ON(cmd != NL80211_CMD_NEW_INTERFACE &&
3319                 cmd != NL80211_CMD_DEL_INTERFACE &&
3320                 cmd != NL80211_CMD_SET_INTERFACE);
3321
3322         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
3323         if (!hdr)
3324                 return -1;
3325
3326         if (dev &&
3327             (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3328              nla_put_string(msg, NL80211_ATTR_IFNAME, dev->name)))
3329                 goto nla_put_failure;
3330
3331         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
3332             nla_put_u32(msg, NL80211_ATTR_IFTYPE, wdev->iftype) ||
3333             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
3334                               NL80211_ATTR_PAD) ||
3335             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, wdev_address(wdev)) ||
3336             nla_put_u32(msg, NL80211_ATTR_GENERATION,
3337                         rdev->devlist_generation ^
3338                         (cfg80211_rdev_list_generation << 2)) ||
3339             nla_put_u8(msg, NL80211_ATTR_4ADDR, wdev->use_4addr))
3340                 goto nla_put_failure;
3341
3342         if (rdev->ops->get_channel) {
3343                 int ret;
3344                 struct cfg80211_chan_def chandef = {};
3345
3346                 ret = rdev_get_channel(rdev, wdev, &chandef);
3347                 if (ret == 0) {
3348                         if (nl80211_send_chandef(msg, &chandef))
3349                                 goto nla_put_failure;
3350                 }
3351         }
3352
3353         if (rdev->ops->get_tx_power) {
3354                 int dbm, ret;
3355
3356                 ret = rdev_get_tx_power(rdev, wdev, &dbm);
3357                 if (ret == 0 &&
3358                     nla_put_u32(msg, NL80211_ATTR_WIPHY_TX_POWER_LEVEL,
3359                                 DBM_TO_MBM(dbm)))
3360                         goto nla_put_failure;
3361         }
3362
3363         wdev_lock(wdev);
3364         switch (wdev->iftype) {
3365         case NL80211_IFTYPE_AP:
3366                 if (wdev->ssid_len &&
3367                     nla_put(msg, NL80211_ATTR_SSID, wdev->ssid_len, wdev->ssid))
3368                         goto nla_put_failure_locked;
3369                 break;
3370         case NL80211_IFTYPE_STATION:
3371         case NL80211_IFTYPE_P2P_CLIENT:
3372         case NL80211_IFTYPE_ADHOC: {
3373                 const u8 *ssid_ie;
3374                 if (!wdev->current_bss)
3375                         break;
3376                 rcu_read_lock();
3377                 ssid_ie = ieee80211_bss_get_ie(&wdev->current_bss->pub,
3378                                                WLAN_EID_SSID);
3379                 if (ssid_ie &&
3380                     nla_put(msg, NL80211_ATTR_SSID, ssid_ie[1], ssid_ie + 2))
3381                         goto nla_put_failure_rcu_locked;
3382                 rcu_read_unlock();
3383                 break;
3384                 }
3385         default:
3386                 /* nothing */
3387                 break;
3388         }
3389         wdev_unlock(wdev);
3390
3391         if (rdev->ops->get_txq_stats) {
3392                 struct cfg80211_txq_stats txqstats = {};
3393                 int ret = rdev_get_txq_stats(rdev, wdev, &txqstats);
3394
3395                 if (ret == 0 &&
3396                     !nl80211_put_txq_stats(msg, &txqstats,
3397                                            NL80211_ATTR_TXQ_STATS))
3398                         goto nla_put_failure;
3399         }
3400
3401         genlmsg_end(msg, hdr);
3402         return 0;
3403
3404  nla_put_failure_rcu_locked:
3405         rcu_read_unlock();
3406  nla_put_failure_locked:
3407         wdev_unlock(wdev);
3408  nla_put_failure:
3409         genlmsg_cancel(msg, hdr);
3410         return -EMSGSIZE;
3411 }
3412
3413 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
3414 {
3415         int wp_idx = 0;
3416         int if_idx = 0;
3417         int wp_start = cb->args[0];
3418         int if_start = cb->args[1];
3419         int filter_wiphy = -1;
3420         struct cfg80211_registered_device *rdev;
3421         struct wireless_dev *wdev;
3422         int ret;
3423
3424         rtnl_lock();
3425         if (!cb->args[2]) {
3426                 struct nl80211_dump_wiphy_state state = {
3427                         .filter_wiphy = -1,
3428                 };
3429
3430                 ret = nl80211_dump_wiphy_parse(skb, cb, &state);
3431                 if (ret)
3432                         goto out_unlock;
3433
3434                 filter_wiphy = state.filter_wiphy;
3435
3436                 /*
3437                  * if filtering, set cb->args[2] to +1 since 0 is the default
3438                  * value needed to determine that parsing is necessary.
3439                  */
3440                 if (filter_wiphy >= 0)
3441                         cb->args[2] = filter_wiphy + 1;
3442                 else
3443                         cb->args[2] = -1;
3444         } else if (cb->args[2] > 0) {
3445                 filter_wiphy = cb->args[2] - 1;
3446         }
3447
3448         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
3449                 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
3450                         continue;
3451                 if (wp_idx < wp_start) {
3452                         wp_idx++;
3453                         continue;
3454                 }
3455
3456                 if (filter_wiphy >= 0 && filter_wiphy != rdev->wiphy_idx)
3457                         continue;
3458
3459                 if_idx = 0;
3460
3461                 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
3462                         if (if_idx < if_start) {
3463                                 if_idx++;
3464                                 continue;
3465                         }
3466                         if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).portid,
3467                                                cb->nlh->nlmsg_seq, NLM_F_MULTI,
3468                                                rdev, wdev,
3469                                                NL80211_CMD_NEW_INTERFACE) < 0) {
3470                                 goto out;
3471                         }
3472                         if_idx++;
3473                 }
3474
3475                 wp_idx++;
3476         }
3477  out:
3478         cb->args[0] = wp_idx;
3479         cb->args[1] = if_idx;
3480
3481         ret = skb->len;
3482  out_unlock:
3483         rtnl_unlock();
3484
3485         return ret;
3486 }
3487
3488 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
3489 {
3490         struct sk_buff *msg;
3491         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3492         struct wireless_dev *wdev = info->user_ptr[1];
3493
3494         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3495         if (!msg)
3496                 return -ENOMEM;
3497
3498         if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
3499                                rdev, wdev, NL80211_CMD_NEW_INTERFACE) < 0) {
3500                 nlmsg_free(msg);
3501                 return -ENOBUFS;
3502         }
3503
3504         return genlmsg_reply(msg, info);
3505 }
3506
3507 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
3508         [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
3509         [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
3510         [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
3511         [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
3512         [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
3513         [NL80211_MNTR_FLAG_ACTIVE] = { .type = NLA_FLAG },
3514 };
3515
3516 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
3517 {
3518         struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
3519         int flag;
3520
3521         *mntrflags = 0;
3522
3523         if (!nla)
3524                 return -EINVAL;
3525
3526         if (nla_parse_nested_deprecated(flags, NL80211_MNTR_FLAG_MAX, nla, mntr_flags_policy, NULL))
3527                 return -EINVAL;
3528
3529         for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
3530                 if (flags[flag])
3531                         *mntrflags |= (1<<flag);
3532
3533         *mntrflags |= MONITOR_FLAG_CHANGED;
3534
3535         return 0;
3536 }
3537
3538 static int nl80211_parse_mon_options(struct cfg80211_registered_device *rdev,
3539                                      enum nl80211_iftype type,
3540                                      struct genl_info *info,
3541                                      struct vif_params *params)
3542 {
3543         bool change = false;
3544         int err;
3545
3546         if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
3547                 if (type != NL80211_IFTYPE_MONITOR)
3548                         return -EINVAL;
3549
3550                 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
3551                                           &params->flags);
3552                 if (err)
3553                         return err;
3554
3555                 change = true;
3556         }
3557
3558         if (params->flags & MONITOR_FLAG_ACTIVE &&
3559             !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
3560                 return -EOPNOTSUPP;
3561
3562         if (info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]) {
3563                 const u8 *mumimo_groups;
3564                 u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER;
3565
3566                 if (type != NL80211_IFTYPE_MONITOR)
3567                         return -EINVAL;
3568
3569                 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag))
3570                         return -EOPNOTSUPP;
3571
3572                 mumimo_groups =
3573                         nla_data(info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]);
3574
3575                 /* bits 0 and 63 are reserved and must be zero */
3576                 if ((mumimo_groups[0] & BIT(0)) ||
3577                     (mumimo_groups[VHT_MUMIMO_GROUPS_DATA_LEN - 1] & BIT(7)))
3578                         return -EINVAL;
3579
3580                 params->vht_mumimo_groups = mumimo_groups;
3581                 change = true;
3582         }
3583
3584         if (info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR]) {
3585                 u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER;
3586
3587                 if (type != NL80211_IFTYPE_MONITOR)
3588                         return -EINVAL;
3589
3590                 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag))
3591                         return -EOPNOTSUPP;
3592
3593                 params->vht_mumimo_follow_addr =
3594                         nla_data(info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR]);
3595                 change = true;
3596         }
3597
3598         return change ? 1 : 0;
3599 }
3600
3601 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
3602                                struct net_device *netdev, u8 use_4addr,
3603                                enum nl80211_iftype iftype)
3604 {
3605         if (!use_4addr) {
3606                 if (netdev && netif_is_bridge_port(netdev))
3607                         return -EBUSY;
3608                 return 0;
3609         }
3610
3611         switch (iftype) {
3612         case NL80211_IFTYPE_AP_VLAN:
3613                 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
3614                         return 0;
3615                 break;
3616         case NL80211_IFTYPE_STATION:
3617                 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
3618                         return 0;
3619                 break;
3620         default:
3621                 break;
3622         }
3623
3624         return -EOPNOTSUPP;
3625 }
3626
3627 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
3628 {
3629         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3630         struct vif_params params;
3631         int err;
3632         enum nl80211_iftype otype, ntype;
3633         struct net_device *dev = info->user_ptr[1];
3634         bool change = false;
3635
3636         memset(&params, 0, sizeof(params));
3637
3638         otype = ntype = dev->ieee80211_ptr->iftype;
3639
3640         if (info->attrs[NL80211_ATTR_IFTYPE]) {
3641                 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
3642                 if (otype != ntype)
3643                         change = true;
3644         }
3645
3646         if (info->attrs[NL80211_ATTR_MESH_ID]) {
3647                 struct wireless_dev *wdev = dev->ieee80211_ptr;
3648
3649                 if (ntype != NL80211_IFTYPE_MESH_POINT)
3650                         return -EINVAL;
3651                 if (netif_running(dev))
3652                         return -EBUSY;
3653
3654                 wdev_lock(wdev);
3655                 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
3656                              IEEE80211_MAX_MESH_ID_LEN);
3657                 wdev->mesh_id_up_len =
3658                         nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
3659                 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
3660                        wdev->mesh_id_up_len);
3661                 wdev_unlock(wdev);
3662         }
3663
3664         if (info->attrs[NL80211_ATTR_4ADDR]) {
3665                 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
3666                 change = true;
3667                 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
3668                 if (err)
3669                         return err;
3670         } else {
3671                 params.use_4addr = -1;
3672         }
3673
3674         err = nl80211_parse_mon_options(rdev, ntype, info, &params);
3675         if (err < 0)
3676                 return err;
3677         if (err > 0)
3678                 change = true;
3679
3680         if (change)
3681                 err = cfg80211_change_iface(rdev, dev, ntype, &params);
3682         else
3683                 err = 0;
3684
3685         if (!err && params.use_4addr != -1)
3686                 dev->ieee80211_ptr->use_4addr = params.use_4addr;
3687
3688         if (change && !err) {
3689                 struct wireless_dev *wdev = dev->ieee80211_ptr;
3690
3691                 nl80211_notify_iface(rdev, wdev, NL80211_CMD_SET_INTERFACE);
3692         }
3693
3694         return err;
3695 }
3696
3697 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
3698 {
3699         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3700         struct vif_params params;
3701         struct wireless_dev *wdev;
3702         struct sk_buff *msg;
3703         int err;
3704         enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
3705
3706         /* to avoid failing a new interface creation due to pending removal */
3707         cfg80211_destroy_ifaces(rdev);
3708
3709         memset(&params, 0, sizeof(params));
3710
3711         if (!info->attrs[NL80211_ATTR_IFNAME])
3712                 return -EINVAL;
3713
3714         if (info->attrs[NL80211_ATTR_IFTYPE])
3715                 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
3716
3717         if (!rdev->ops->add_virtual_intf)
3718                 return -EOPNOTSUPP;
3719
3720         if ((type == NL80211_IFTYPE_P2P_DEVICE || type == NL80211_IFTYPE_NAN ||
3721              rdev->wiphy.features & NL80211_FEATURE_MAC_ON_CREATE) &&
3722             info->attrs[NL80211_ATTR_MAC]) {
3723                 nla_memcpy(params.macaddr, info->attrs[NL80211_ATTR_MAC],
3724                            ETH_ALEN);
3725                 if (!is_valid_ether_addr(params.macaddr))
3726                         return -EADDRNOTAVAIL;
3727         }
3728
3729         if (info->attrs[NL80211_ATTR_4ADDR]) {
3730                 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
3731                 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
3732                 if (err)
3733                         return err;
3734         }
3735
3736         if (!cfg80211_iftype_allowed(&rdev->wiphy, type, params.use_4addr, 0))
3737                 return -EOPNOTSUPP;
3738
3739         err = nl80211_parse_mon_options(rdev, type, info, &params);
3740         if (err < 0)
3741                 return err;
3742
3743         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3744         if (!msg)
3745                 return -ENOMEM;
3746
3747         wdev = rdev_add_virtual_intf(rdev,
3748                                 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
3749                                 NET_NAME_USER, type, &params);
3750         if (WARN_ON(!wdev)) {
3751                 nlmsg_free(msg);
3752                 return -EPROTO;
3753         } else if (IS_ERR(wdev)) {
3754                 nlmsg_free(msg);
3755                 return PTR_ERR(wdev);
3756         }
3757
3758         if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
3759                 wdev->owner_nlportid = info->snd_portid;
3760
3761         switch (type) {
3762         case NL80211_IFTYPE_MESH_POINT:
3763                 if (!info->attrs[NL80211_ATTR_MESH_ID])
3764                         break;
3765                 wdev_lock(wdev);
3766                 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
3767                              IEEE80211_MAX_MESH_ID_LEN);
3768                 wdev->mesh_id_up_len =
3769                         nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
3770                 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
3771                        wdev->mesh_id_up_len);
3772                 wdev_unlock(wdev);
3773                 break;
3774         case NL80211_IFTYPE_NAN:
3775         case NL80211_IFTYPE_P2P_DEVICE:
3776                 /*
3777                  * P2P Device and NAN do not have a netdev, so don't go
3778                  * through the netdev notifier and must be added here
3779                  */
3780                 cfg80211_init_wdev(rdev, wdev);
3781                 break;
3782         default:
3783                 break;
3784         }
3785
3786         if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
3787                                rdev, wdev, NL80211_CMD_NEW_INTERFACE) < 0) {
3788                 nlmsg_free(msg);
3789                 return -ENOBUFS;
3790         }
3791
3792         return genlmsg_reply(msg, info);
3793 }
3794
3795 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
3796 {
3797         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3798         struct wireless_dev *wdev = info->user_ptr[1];
3799
3800         if (!rdev->ops->del_virtual_intf)
3801                 return -EOPNOTSUPP;
3802
3803         /*
3804          * If we remove a wireless device without a netdev then clear
3805          * user_ptr[1] so that nl80211_post_doit won't dereference it
3806          * to check if it needs to do dev_put(). Otherwise it crashes
3807          * since the wdev has been freed, unlike with a netdev where
3808          * we need the dev_put() for the netdev to really be freed.
3809          */
3810         if (!wdev->netdev)
3811                 info->user_ptr[1] = NULL;
3812
3813         return rdev_del_virtual_intf(rdev, wdev);
3814 }
3815
3816 static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info)
3817 {
3818         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3819         struct net_device *dev = info->user_ptr[1];
3820         u16 noack_map;
3821
3822         if (!info->attrs[NL80211_ATTR_NOACK_MAP])
3823                 return -EINVAL;
3824
3825         if (!rdev->ops->set_noack_map)
3826                 return -EOPNOTSUPP;
3827
3828         noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]);
3829
3830         return rdev_set_noack_map(rdev, dev, noack_map);
3831 }
3832
3833 struct get_key_cookie {
3834         struct sk_buff *msg;
3835         int error;
3836         int idx;
3837 };
3838
3839 static void get_key_callback(void *c, struct key_params *params)
3840 {
3841         struct nlattr *key;
3842         struct get_key_cookie *cookie = c;
3843
3844         if ((params->key &&
3845              nla_put(cookie->msg, NL80211_ATTR_KEY_DATA,
3846                      params->key_len, params->key)) ||
3847             (params->seq &&
3848              nla_put(cookie->msg, NL80211_ATTR_KEY_SEQ,
3849                      params->seq_len, params->seq)) ||
3850             (params->cipher &&
3851              nla_put_u32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
3852                          params->cipher)))
3853                 goto nla_put_failure;
3854
3855         key = nla_nest_start_noflag(cookie->msg, NL80211_ATTR_KEY);
3856         if (!key)
3857                 goto nla_put_failure;
3858
3859         if ((params->key &&
3860              nla_put(cookie->msg, NL80211_KEY_DATA,
3861                      params->key_len, params->key)) ||
3862             (params->seq &&
3863              nla_put(cookie->msg, NL80211_KEY_SEQ,
3864                      params->seq_len, params->seq)) ||
3865             (params->cipher &&
3866              nla_put_u32(cookie->msg, NL80211_KEY_CIPHER,
3867                          params->cipher)))
3868                 goto nla_put_failure;
3869
3870         if (nla_put_u8(cookie->msg, NL80211_KEY_IDX, cookie->idx))
3871                 goto nla_put_failure;
3872
3873         nla_nest_end(cookie->msg, key);
3874
3875         return;
3876  nla_put_failure:
3877         cookie->error = 1;
3878 }
3879
3880 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
3881 {
3882         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3883         int err;
3884         struct net_device *dev = info->user_ptr[1];
3885         u8 key_idx = 0;
3886         const u8 *mac_addr = NULL;
3887         bool pairwise;
3888         struct get_key_cookie cookie = {
3889                 .error = 0,
3890         };
3891         void *hdr;
3892         struct sk_buff *msg;
3893
3894         if (info->attrs[NL80211_ATTR_KEY_IDX]) {
3895                 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
3896                 if (key_idx > 5 &&
3897                     !wiphy_ext_feature_isset(
3898                             &rdev->wiphy,
3899                             NL80211_EXT_FEATURE_BEACON_PROTECTION))
3900                         return -EINVAL;
3901         }
3902
3903         if (info->attrs[NL80211_ATTR_MAC])
3904                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3905
3906         pairwise = !!mac_addr;
3907         if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
3908                 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
3909
3910                 if (kt != NL80211_KEYTYPE_GROUP &&
3911                     kt != NL80211_KEYTYPE_PAIRWISE)
3912                         return -EINVAL;
3913                 pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
3914         }
3915
3916         if (!rdev->ops->get_key)
3917                 return -EOPNOTSUPP;
3918
3919         if (!pairwise && mac_addr && !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
3920                 return -ENOENT;
3921
3922         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3923         if (!msg)
3924                 return -ENOMEM;
3925
3926         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
3927                              NL80211_CMD_NEW_KEY);
3928         if (!hdr)
3929                 goto nla_put_failure;
3930
3931         cookie.msg = msg;
3932         cookie.idx = key_idx;
3933
3934         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3935             nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx))
3936                 goto nla_put_failure;
3937         if (mac_addr &&
3938             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
3939                 goto nla_put_failure;
3940
3941         err = rdev_get_key(rdev, dev, key_idx, pairwise, mac_addr, &cookie,
3942                            get_key_callback);
3943
3944         if (err)
3945                 goto free_msg;
3946
3947         if (cookie.error)
3948                 goto nla_put_failure;
3949
3950         genlmsg_end(msg, hdr);
3951         return genlmsg_reply(msg, info);
3952
3953  nla_put_failure:
3954         err = -ENOBUFS;
3955  free_msg:
3956         nlmsg_free(msg);
3957         return err;
3958 }
3959
3960 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
3961 {
3962         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3963         struct key_parse key;
3964         int err;
3965         struct net_device *dev = info->user_ptr[1];
3966
3967         err = nl80211_parse_key(info, &key);
3968         if (err)
3969                 return err;
3970
3971         if (key.idx < 0)
3972                 return -EINVAL;
3973
3974         /* Only support setting default key and
3975          * Extended Key ID action NL80211_KEY_SET_TX.
3976          */
3977         if (!key.def && !key.defmgmt && !key.defbeacon &&
3978             !(key.p.mode == NL80211_KEY_SET_TX))
3979                 return -EINVAL;
3980
3981         wdev_lock(dev->ieee80211_ptr);
3982
3983         if (key.def) {
3984                 if (!rdev->ops->set_default_key) {
3985                         err = -EOPNOTSUPP;
3986                         goto out;
3987                 }
3988
3989                 err = nl80211_key_allowed(dev->ieee80211_ptr);
3990                 if (err)
3991                         goto out;
3992
3993                 err = rdev_set_default_key(rdev, dev, key.idx,
3994                                                  key.def_uni, key.def_multi);
3995
3996                 if (err)
3997                         goto out;
3998
3999 #ifdef CONFIG_CFG80211_WEXT
4000                 dev->ieee80211_ptr->wext.default_key = key.idx;
4001 #endif
4002         } else if (key.defmgmt) {
4003                 if (key.def_uni || !key.def_multi) {
4004                         err = -EINVAL;
4005                         goto out;
4006                 }
4007
4008                 if (!rdev->ops->set_default_mgmt_key) {
4009                         err = -EOPNOTSUPP;
4010                         goto out;
4011                 }
4012
4013                 err = nl80211_key_allowed(dev->ieee80211_ptr);
4014                 if (err)
4015                         goto out;
4016
4017                 err = rdev_set_default_mgmt_key(rdev, dev, key.idx);
4018                 if (err)
4019                         goto out;
4020
4021 #ifdef CONFIG_CFG80211_WEXT
4022                 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx;
4023 #endif
4024         } else if (key.defbeacon) {
4025                 if (key.def_uni || !key.def_multi) {
4026                         err = -EINVAL;
4027                         goto out;
4028                 }
4029
4030                 if (!rdev->ops->set_default_beacon_key) {
4031                         err = -EOPNOTSUPP;
4032                         goto out;
4033                 }
4034
4035                 err = nl80211_key_allowed(dev->ieee80211_ptr);
4036                 if (err)
4037                         goto out;
4038
4039                 err = rdev_set_default_beacon_key(rdev, dev, key.idx);
4040                 if (err)
4041                         goto out;
4042         } else if (key.p.mode == NL80211_KEY_SET_TX &&
4043                    wiphy_ext_feature_isset(&rdev->wiphy,
4044                                            NL80211_EXT_FEATURE_EXT_KEY_ID)) {
4045                 u8 *mac_addr = NULL;
4046
4047                 if (info->attrs[NL80211_ATTR_MAC])
4048                         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4049
4050                 if (!mac_addr || key.idx < 0 || key.idx > 1) {
4051                         err = -EINVAL;
4052                         goto out;
4053                 }
4054
4055                 err = rdev_add_key(rdev, dev, key.idx,
4056                                    NL80211_KEYTYPE_PAIRWISE,
4057                                    mac_addr, &key.p);
4058         } else {
4059                 err = -EINVAL;
4060         }
4061  out:
4062         wdev_unlock(dev->ieee80211_ptr);
4063
4064         return err;
4065 }
4066
4067 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
4068 {
4069         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4070         int err;
4071         struct net_device *dev = info->user_ptr[1];
4072         struct key_parse key;
4073         const u8 *mac_addr = NULL;
4074
4075         err = nl80211_parse_key(info, &key);
4076         if (err)
4077                 return err;
4078
4079         if (!key.p.key) {
4080                 GENL_SET_ERR_MSG(info, "no key");
4081                 return -EINVAL;
4082         }
4083
4084         if (info->attrs[NL80211_ATTR_MAC])
4085                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4086
4087         if (key.type == -1) {
4088                 if (mac_addr)
4089                         key.type = NL80211_KEYTYPE_PAIRWISE;
4090                 else
4091                         key.type = NL80211_KEYTYPE_GROUP;
4092         }
4093
4094         /* for now */
4095         if (key.type != NL80211_KEYTYPE_PAIRWISE &&
4096             key.type != NL80211_KEYTYPE_GROUP) {
4097                 GENL_SET_ERR_MSG(info, "key type not pairwise or group");
4098                 return -EINVAL;
4099         }
4100
4101         if (key.type == NL80211_KEYTYPE_GROUP &&
4102             info->attrs[NL80211_ATTR_VLAN_ID])
4103                 key.p.vlan_id = nla_get_u16(info->attrs[NL80211_ATTR_VLAN_ID]);
4104
4105         if (!rdev->ops->add_key)
4106                 return -EOPNOTSUPP;
4107
4108         if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
4109                                            key.type == NL80211_KEYTYPE_PAIRWISE,
4110                                            mac_addr)) {
4111                 GENL_SET_ERR_MSG(info, "key setting validation failed");
4112                 return -EINVAL;
4113         }
4114
4115         wdev_lock(dev->ieee80211_ptr);
4116         err = nl80211_key_allowed(dev->ieee80211_ptr);
4117         if (err)
4118                 GENL_SET_ERR_MSG(info, "key not allowed");
4119         if (!err) {
4120                 err = rdev_add_key(rdev, dev, key.idx,
4121                                    key.type == NL80211_KEYTYPE_PAIRWISE,
4122                                     mac_addr, &key.p);
4123                 if (err)
4124                         GENL_SET_ERR_MSG(info, "key addition failed");
4125         }
4126         wdev_unlock(dev->ieee80211_ptr);
4127
4128         return err;
4129 }
4130
4131 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
4132 {
4133         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4134         int err;
4135         struct net_device *dev = info->user_ptr[1];
4136         u8 *mac_addr = NULL;
4137         struct key_parse key;
4138
4139         err = nl80211_parse_key(info, &key);
4140         if (err)
4141                 return err;
4142
4143         if (info->attrs[NL80211_ATTR_MAC])
4144                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4145
4146         if (key.type == -1) {
4147                 if (mac_addr)
4148                         key.type = NL80211_KEYTYPE_PAIRWISE;
4149                 else
4150                         key.type = NL80211_KEYTYPE_GROUP;
4151         }
4152
4153         /* for now */
4154         if (key.type != NL80211_KEYTYPE_PAIRWISE &&
4155             key.type != NL80211_KEYTYPE_GROUP)
4156                 return -EINVAL;
4157
4158         if (!rdev->ops->del_key)
4159                 return -EOPNOTSUPP;
4160
4161         wdev_lock(dev->ieee80211_ptr);
4162         err = nl80211_key_allowed(dev->ieee80211_ptr);
4163
4164         if (key.type == NL80211_KEYTYPE_GROUP && mac_addr &&
4165             !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
4166                 err = -ENOENT;
4167
4168         if (!err)
4169                 err = rdev_del_key(rdev, dev, key.idx,
4170                                    key.type == NL80211_KEYTYPE_PAIRWISE,
4171                                    mac_addr);
4172
4173 #ifdef CONFIG_CFG80211_WEXT
4174         if (!err) {
4175                 if (key.idx == dev->ieee80211_ptr->wext.default_key)
4176                         dev->ieee80211_ptr->wext.default_key = -1;
4177                 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key)
4178                         dev->ieee80211_ptr->wext.default_mgmt_key = -1;
4179         }
4180 #endif
4181         wdev_unlock(dev->ieee80211_ptr);
4182
4183         return err;
4184 }
4185
4186 /* This function returns an error or the number of nested attributes */
4187 static int validate_acl_mac_addrs(struct nlattr *nl_attr)
4188 {
4189         struct nlattr *attr;
4190         int n_entries = 0, tmp;
4191
4192         nla_for_each_nested(attr, nl_attr, tmp) {
4193                 if (nla_len(attr) != ETH_ALEN)
4194                         return -EINVAL;
4195
4196                 n_entries++;
4197         }
4198
4199         return n_entries;
4200 }
4201
4202 /*
4203  * This function parses ACL information and allocates memory for ACL data.
4204  * On successful return, the calling function is responsible to free the
4205  * ACL buffer returned by this function.
4206  */
4207 static struct cfg80211_acl_data *parse_acl_data(struct wiphy *wiphy,
4208                                                 struct genl_info *info)
4209 {
4210         enum nl80211_acl_policy acl_policy;
4211         struct nlattr *attr;
4212         struct cfg80211_acl_data *acl;
4213         int i = 0, n_entries, tmp;
4214
4215         if (!wiphy->max_acl_mac_addrs)
4216                 return ERR_PTR(-EOPNOTSUPP);
4217
4218         if (!info->attrs[NL80211_ATTR_ACL_POLICY])
4219                 return ERR_PTR(-EINVAL);
4220
4221         acl_policy = nla_get_u32(info->attrs[NL80211_ATTR_ACL_POLICY]);
4222         if (acl_policy != NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED &&
4223             acl_policy != NL80211_ACL_POLICY_DENY_UNLESS_LISTED)
4224                 return ERR_PTR(-EINVAL);
4225
4226         if (!info->attrs[NL80211_ATTR_MAC_ADDRS])
4227                 return ERR_PTR(-EINVAL);
4228
4229         n_entries = validate_acl_mac_addrs(info->attrs[NL80211_ATTR_MAC_ADDRS]);
4230         if (n_entries < 0)
4231                 return ERR_PTR(n_entries);
4232
4233         if (n_entries > wiphy->max_acl_mac_addrs)
4234                 return ERR_PTR(-ENOTSUPP);
4235
4236         acl = kzalloc(struct_size(acl, mac_addrs, n_entries), GFP_KERNEL);
4237         if (!acl)
4238                 return ERR_PTR(-ENOMEM);
4239
4240         nla_for_each_nested(attr, info->attrs[NL80211_ATTR_MAC_ADDRS], tmp) {
4241                 memcpy(acl->mac_addrs[i].addr, nla_data(attr), ETH_ALEN);
4242                 i++;
4243         }
4244
4245         acl->n_acl_entries = n_entries;
4246         acl->acl_policy = acl_policy;
4247
4248         return acl;
4249 }
4250
4251 static int nl80211_set_mac_acl(struct sk_buff *skb, struct genl_info *info)
4252 {
4253         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4254         struct net_device *dev = info->user_ptr[1];
4255         struct cfg80211_acl_data *acl;
4256         int err;
4257
4258         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4259             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4260                 return -EOPNOTSUPP;
4261
4262         if (!dev->ieee80211_ptr->beacon_interval)
4263                 return -EINVAL;
4264
4265         acl = parse_acl_data(&rdev->wiphy, info);
4266         if (IS_ERR(acl))
4267                 return PTR_ERR(acl);
4268
4269         err = rdev_set_mac_acl(rdev, dev, acl);
4270
4271         kfree(acl);
4272
4273         return err;
4274 }
4275
4276 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
4277                            u8 *rates, u8 rates_len)
4278 {
4279         u8 i;
4280         u32 mask = 0;
4281
4282         for (i = 0; i < rates_len; i++) {
4283                 int rate = (rates[i] & 0x7f) * 5;
4284                 int ridx;
4285
4286                 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
4287                         struct ieee80211_rate *srate =
4288                                 &sband->bitrates[ridx];
4289                         if (rate == srate->bitrate) {
4290                                 mask |= 1 << ridx;
4291                                 break;
4292                         }
4293                 }
4294                 if (ridx == sband->n_bitrates)
4295                         return 0; /* rate not found */
4296         }
4297
4298         return mask;
4299 }
4300
4301 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband,
4302                                u8 *rates, u8 rates_len,
4303                                u8 mcs[IEEE80211_HT_MCS_MASK_LEN])
4304 {
4305         u8 i;
4306
4307         memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN);
4308
4309         for (i = 0; i < rates_len; i++) {
4310                 int ridx, rbit;
4311
4312                 ridx = rates[i] / 8;
4313                 rbit = BIT(rates[i] % 8);
4314
4315                 /* check validity */
4316                 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN))
4317                         return false;
4318
4319                 /* check availability */
4320                 ridx = array_index_nospec(ridx, IEEE80211_HT_MCS_MASK_LEN);
4321                 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit)
4322                         mcs[ridx] |= rbit;
4323                 else
4324                         return false;
4325         }
4326
4327         return true;
4328 }
4329
4330 static u16 vht_mcs_map_to_mcs_mask(u8 vht_mcs_map)
4331 {
4332         u16 mcs_mask = 0;
4333
4334         switch (vht_mcs_map) {
4335         case IEEE80211_VHT_MCS_NOT_SUPPORTED:
4336                 break;
4337         case IEEE80211_VHT_MCS_SUPPORT_0_7:
4338                 mcs_mask = 0x00FF;
4339                 break;
4340         case IEEE80211_VHT_MCS_SUPPORT_0_8:
4341                 mcs_mask = 0x01FF;
4342                 break;
4343         case IEEE80211_VHT_MCS_SUPPORT_0_9:
4344                 mcs_mask = 0x03FF;
4345                 break;
4346         default:
4347                 break;
4348         }
4349
4350         return mcs_mask;
4351 }
4352
4353 static void vht_build_mcs_mask(u16 vht_mcs_map,
4354                                u16 vht_mcs_mask[NL80211_VHT_NSS_MAX])
4355 {
4356         u8 nss;
4357
4358         for (nss = 0; nss < NL80211_VHT_NSS_MAX; nss++) {
4359                 vht_mcs_mask[nss] = vht_mcs_map_to_mcs_mask(vht_mcs_map & 0x03);
4360                 vht_mcs_map >>= 2;
4361         }
4362 }
4363
4364 static bool vht_set_mcs_mask(struct ieee80211_supported_band *sband,
4365                              struct nl80211_txrate_vht *txrate,
4366                              u16 mcs[NL80211_VHT_NSS_MAX])
4367 {
4368         u16 tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
4369         u16 tx_mcs_mask[NL80211_VHT_NSS_MAX] = {};
4370         u8 i;
4371
4372         if (!sband->vht_cap.vht_supported)
4373                 return false;
4374
4375         memset(mcs, 0, sizeof(u16) * NL80211_VHT_NSS_MAX);
4376
4377         /* Build vht_mcs_mask from VHT capabilities */
4378         vht_build_mcs_mask(tx_mcs_map, tx_mcs_mask);
4379
4380         for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
4381                 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i])
4382                         mcs[i] = txrate->mcs[i];
4383                 else
4384                         return false;
4385         }
4386
4387         return true;
4388 }
4389
4390 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
4391         [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
4392                                     .len = NL80211_MAX_SUPP_RATES },
4393         [NL80211_TXRATE_HT] = { .type = NLA_BINARY,
4394                                 .len = NL80211_MAX_SUPP_HT_RATES },
4395         [NL80211_TXRATE_VHT] = {
4396                 .type = NLA_EXACT_LEN_WARN,
4397                 .len = sizeof(struct nl80211_txrate_vht),
4398         },
4399         [NL80211_TXRATE_GI] = { .type = NLA_U8 },
4400 };
4401
4402 static int nl80211_parse_tx_bitrate_mask(struct genl_info *info,
4403                                          struct cfg80211_bitrate_mask *mask)
4404 {
4405         struct nlattr *tb[NL80211_TXRATE_MAX + 1];
4406         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4407         int rem, i;
4408         struct nlattr *tx_rates;
4409         struct ieee80211_supported_band *sband;
4410         u16 vht_tx_mcs_map;
4411
4412         memset(mask, 0, sizeof(*mask));
4413         /* Default to all rates enabled */
4414         for (i = 0; i < NUM_NL80211_BANDS; i++) {
4415                 sband = rdev->wiphy.bands[i];
4416
4417                 if (!sband)
4418                         continue;
4419
4420                 mask->control[i].legacy = (1 << sband->n_bitrates) - 1;
4421                 memcpy(mask->control[i].ht_mcs,
4422                        sband->ht_cap.mcs.rx_mask,
4423                        sizeof(mask->control[i].ht_mcs));
4424
4425                 if (!sband->vht_cap.vht_supported)
4426                         continue;
4427
4428                 vht_tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
4429                 vht_build_mcs_mask(vht_tx_mcs_map, mask->control[i].vht_mcs);
4430         }
4431
4432         /* if no rates are given set it back to the defaults */
4433         if (!info->attrs[NL80211_ATTR_TX_RATES])
4434                 goto out;
4435
4436         /* The nested attribute uses enum nl80211_band as the index. This maps
4437          * directly to the enum nl80211_band values used in cfg80211.
4438          */
4439         BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8);
4440         nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem) {
4441                 enum nl80211_band band = nla_type(tx_rates);
4442                 int err;
4443
4444                 if (band < 0 || band >= NUM_NL80211_BANDS)
4445                         return -EINVAL;
4446                 sband = rdev->wiphy.bands[band];
4447                 if (sband == NULL)
4448                         return -EINVAL;
4449                 err = nla_parse_nested_deprecated(tb, NL80211_TXRATE_MAX,
4450                                                   tx_rates,
4451                                                   nl80211_txattr_policy,
4452                                                   info->extack);
4453                 if (err)
4454                         return err;
4455                 if (tb[NL80211_TXRATE_LEGACY]) {
4456                         mask->control[band].legacy = rateset_to_mask(
4457                                 sband,
4458                                 nla_data(tb[NL80211_TXRATE_LEGACY]),
4459                                 nla_len(tb[NL80211_TXRATE_LEGACY]));
4460                         if ((mask->control[band].legacy == 0) &&
4461                             nla_len(tb[NL80211_TXRATE_LEGACY]))
4462                                 return -EINVAL;
4463                 }
4464                 if (tb[NL80211_TXRATE_HT]) {
4465                         if (!ht_rateset_to_mask(
4466                                         sband,
4467                                         nla_data(tb[NL80211_TXRATE_HT]),
4468                                         nla_len(tb[NL80211_TXRATE_HT]),
4469                                         mask->control[band].ht_mcs))
4470                                 return -EINVAL;
4471                 }
4472                 if (tb[NL80211_TXRATE_VHT]) {
4473                         if (!vht_set_mcs_mask(
4474                                         sband,
4475                                         nla_data(tb[NL80211_TXRATE_VHT]),
4476                                         mask->control[band].vht_mcs))
4477                                 return -EINVAL;
4478                 }
4479                 if (tb[NL80211_TXRATE_GI]) {
4480                         mask->control[band].gi =
4481                                 nla_get_u8(tb[NL80211_TXRATE_GI]);
4482                         if (mask->control[band].gi > NL80211_TXRATE_FORCE_LGI)
4483                                 return -EINVAL;
4484                 }
4485
4486                 if (mask->control[band].legacy == 0) {
4487                         /* don't allow empty legacy rates if HT or VHT
4488                          * are not even supported.
4489                          */
4490                         if (!(rdev->wiphy.bands[band]->ht_cap.ht_supported ||
4491                               rdev->wiphy.bands[band]->vht_cap.vht_supported))
4492                                 return -EINVAL;
4493
4494                         for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
4495                                 if (mask->control[band].ht_mcs[i])
4496                                         goto out;
4497
4498                         for (i = 0; i < NL80211_VHT_NSS_MAX; i++)
4499                                 if (mask->control[band].vht_mcs[i])
4500                                         goto out;
4501
4502                         /* legacy and mcs rates may not be both empty */
4503                         return -EINVAL;
4504                 }
4505         }
4506
4507 out:
4508         return 0;
4509 }
4510
4511 static int validate_beacon_tx_rate(struct cfg80211_registered_device *rdev,
4512                                    enum nl80211_band band,
4513                                    struct cfg80211_bitrate_mask *beacon_rate)
4514 {
4515         u32 count_ht, count_vht, i;
4516         u32 rate = beacon_rate->control[band].legacy;
4517
4518         /* Allow only one rate */
4519         if (hweight32(rate) > 1)
4520                 return -EINVAL;
4521
4522         count_ht = 0;
4523         for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++) {
4524                 if (hweight8(beacon_rate->control[band].ht_mcs[i]) > 1) {
4525                         return -EINVAL;
4526                 } else if (beacon_rate->control[band].ht_mcs[i]) {
4527                         count_ht++;
4528                         if (count_ht > 1)
4529                                 return -EINVAL;
4530                 }
4531                 if (count_ht && rate)
4532                         return -EINVAL;
4533         }
4534
4535         count_vht = 0;
4536         for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
4537                 if (hweight16(beacon_rate->control[band].vht_mcs[i]) > 1) {
4538                         return -EINVAL;
4539                 } else if (beacon_rate->control[band].vht_mcs[i]) {
4540                         count_vht++;
4541                         if (count_vht > 1)
4542                                 return -EINVAL;
4543                 }
4544                 if (count_vht && rate)
4545                         return -EINVAL;
4546         }
4547
4548         if ((count_ht && count_vht) || (!rate && !count_ht && !count_vht))
4549                 return -EINVAL;
4550
4551         if (rate &&
4552             !wiphy_ext_feature_isset(&rdev->wiphy,
4553                                      NL80211_EXT_FEATURE_BEACON_RATE_LEGACY))
4554                 return -EINVAL;
4555         if (count_ht &&
4556             !wiphy_ext_feature_isset(&rdev->wiphy,
4557                                      NL80211_EXT_FEATURE_BEACON_RATE_HT))
4558                 return -EINVAL;
4559         if (count_vht &&
4560             !wiphy_ext_feature_isset(&rdev->wiphy,
4561                                      NL80211_EXT_FEATURE_BEACON_RATE_VHT))
4562                 return -EINVAL;
4563
4564         return 0;
4565 }
4566
4567 static int nl80211_parse_beacon(struct cfg80211_registered_device *rdev,
4568                                 struct nlattr *attrs[],
4569                                 struct cfg80211_beacon_data *bcn)
4570 {
4571         bool haveinfo = false;
4572         int err;
4573
4574         memset(bcn, 0, sizeof(*bcn));
4575
4576         if (attrs[NL80211_ATTR_BEACON_HEAD]) {
4577                 bcn->head = nla_data(attrs[NL80211_ATTR_BEACON_HEAD]);
4578                 bcn->head_len = nla_len(attrs[NL80211_ATTR_BEACON_HEAD]);
4579                 if (!bcn->head_len)
4580                         return -EINVAL;
4581                 haveinfo = true;
4582         }
4583
4584         if (attrs[NL80211_ATTR_BEACON_TAIL]) {
4585                 bcn->tail = nla_data(attrs[NL80211_ATTR_BEACON_TAIL]);
4586                 bcn->tail_len = nla_len(attrs[NL80211_ATTR_BEACON_TAIL]);
4587                 haveinfo = true;
4588         }
4589
4590         if (!haveinfo)
4591                 return -EINVAL;
4592
4593         if (attrs[NL80211_ATTR_IE]) {
4594                 bcn->beacon_ies = nla_data(attrs[NL80211_ATTR_IE]);
4595                 bcn->beacon_ies_len = nla_len(attrs[NL80211_ATTR_IE]);
4596         }
4597
4598         if (attrs[NL80211_ATTR_IE_PROBE_RESP]) {
4599                 bcn->proberesp_ies =
4600                         nla_data(attrs[NL80211_ATTR_IE_PROBE_RESP]);
4601                 bcn->proberesp_ies_len =
4602                         nla_len(attrs[NL80211_ATTR_IE_PROBE_RESP]);
4603         }
4604
4605         if (attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
4606                 bcn->assocresp_ies =
4607                         nla_data(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
4608                 bcn->assocresp_ies_len =
4609                         nla_len(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
4610         }
4611
4612         if (attrs[NL80211_ATTR_PROBE_RESP]) {
4613                 bcn->probe_resp = nla_data(attrs[NL80211_ATTR_PROBE_RESP]);
4614                 bcn->probe_resp_len = nla_len(attrs[NL80211_ATTR_PROBE_RESP]);
4615         }
4616
4617         if (attrs[NL80211_ATTR_FTM_RESPONDER]) {
4618                 struct nlattr *tb[NL80211_FTM_RESP_ATTR_MAX + 1];
4619
4620                 err = nla_parse_nested_deprecated(tb,
4621                                                   NL80211_FTM_RESP_ATTR_MAX,
4622                                                   attrs[NL80211_ATTR_FTM_RESPONDER],
4623                                                   NULL, NULL);
4624                 if (err)
4625                         return err;
4626
4627                 if (tb[NL80211_FTM_RESP_ATTR_ENABLED] &&
4628                     wiphy_ext_feature_isset(&rdev->wiphy,
4629                                             NL80211_EXT_FEATURE_ENABLE_FTM_RESPONDER))
4630                         bcn->ftm_responder = 1;
4631                 else
4632                         return -EOPNOTSUPP;
4633
4634                 if (tb[NL80211_FTM_RESP_ATTR_LCI]) {
4635                         bcn->lci = nla_data(tb[NL80211_FTM_RESP_ATTR_LCI]);
4636                         bcn->lci_len = nla_len(tb[NL80211_FTM_RESP_ATTR_LCI]);
4637                 }
4638
4639                 if (tb[NL80211_FTM_RESP_ATTR_CIVICLOC]) {
4640                         bcn->civicloc = nla_data(tb[NL80211_FTM_RESP_ATTR_CIVICLOC]);
4641                         bcn->civicloc_len = nla_len(tb[NL80211_FTM_RESP_ATTR_CIVICLOC]);
4642                 }
4643         } else {
4644                 bcn->ftm_responder = -1;
4645         }
4646
4647         return 0;
4648 }
4649
4650 static int nl80211_parse_he_obss_pd(struct nlattr *attrs,
4651                                     struct ieee80211_he_obss_pd *he_obss_pd)
4652 {
4653         struct nlattr *tb[NL80211_HE_OBSS_PD_ATTR_MAX + 1];
4654         int err;
4655
4656         err = nla_parse_nested(tb, NL80211_HE_OBSS_PD_ATTR_MAX, attrs,
4657                                he_obss_pd_policy, NULL);
4658         if (err)
4659                 return err;
4660
4661         if (!tb[NL80211_HE_OBSS_PD_ATTR_MIN_OFFSET] ||
4662             !tb[NL80211_HE_OBSS_PD_ATTR_MAX_OFFSET])
4663                 return -EINVAL;
4664
4665         he_obss_pd->min_offset =
4666                 nla_get_u32(tb[NL80211_HE_OBSS_PD_ATTR_MIN_OFFSET]);
4667         he_obss_pd->max_offset =
4668                 nla_get_u32(tb[NL80211_HE_OBSS_PD_ATTR_MAX_OFFSET]);
4669
4670         if (he_obss_pd->min_offset >= he_obss_pd->max_offset)
4671                 return -EINVAL;
4672
4673         he_obss_pd->enable = true;
4674
4675         return 0;
4676 }
4677
4678 static int nl80211_parse_he_bss_color(struct nlattr *attrs,
4679                                       struct cfg80211_he_bss_color *he_bss_color)
4680 {
4681         struct nlattr *tb[NL80211_HE_BSS_COLOR_ATTR_MAX + 1];
4682         int err;
4683
4684         err = nla_parse_nested(tb, NL80211_HE_BSS_COLOR_ATTR_MAX, attrs,
4685                                he_bss_color_policy, NULL);
4686         if (err)
4687                 return err;
4688
4689         if (!tb[NL80211_HE_BSS_COLOR_ATTR_COLOR])
4690                 return -EINVAL;
4691
4692         he_bss_color->color =
4693                 nla_get_u8(tb[NL80211_HE_BSS_COLOR_ATTR_COLOR]);
4694         he_bss_color->disabled =
4695                 nla_get_flag(tb[NL80211_HE_BSS_COLOR_ATTR_DISABLED]);
4696         he_bss_color->partial =
4697                 nla_get_flag(tb[NL80211_HE_BSS_COLOR_ATTR_PARTIAL]);
4698
4699         return 0;
4700 }
4701
4702 static void nl80211_check_ap_rate_selectors(struct cfg80211_ap_settings *params,
4703                                             const u8 *rates)
4704 {
4705         int i;
4706
4707         if (!rates)
4708                 return;
4709
4710         for (i = 0; i < rates[1]; i++) {
4711                 if (rates[2 + i] == BSS_MEMBERSHIP_SELECTOR_HT_PHY)
4712                         params->ht_required = true;
4713                 if (rates[2 + i] == BSS_MEMBERSHIP_SELECTOR_VHT_PHY)
4714                         params->vht_required = true;
4715         }
4716 }
4717
4718 /*
4719  * Since the nl80211 API didn't include, from the beginning, attributes about
4720  * HT/VHT requirements/capabilities, we parse them out of the IEs for the
4721  * benefit of drivers that rebuild IEs in the firmware.
4722  */
4723 static void nl80211_calculate_ap_params(struct cfg80211_ap_settings *params)
4724 {
4725         const struct cfg80211_beacon_data *bcn = &params->beacon;
4726         size_t ies_len = bcn->tail_len;
4727         const u8 *ies = bcn->tail;
4728         const u8 *rates;
4729         const u8 *cap;
4730
4731         rates = cfg80211_find_ie(WLAN_EID_SUPP_RATES, ies, ies_len);
4732         nl80211_check_ap_rate_selectors(params, rates);
4733
4734         rates = cfg80211_find_ie(WLAN_EID_EXT_SUPP_RATES, ies, ies_len);
4735         nl80211_check_ap_rate_selectors(params, rates);
4736
4737         cap = cfg80211_find_ie(WLAN_EID_HT_CAPABILITY, ies, ies_len);
4738         if (cap && cap[1] >= sizeof(*params->ht_cap))
4739                 params->ht_cap = (void *)(cap + 2);
4740         cap = cfg80211_find_ie(WLAN_EID_VHT_CAPABILITY, ies, ies_len);
4741         if (cap && cap[1] >= sizeof(*params->vht_cap))
4742                 params->vht_cap = (void *)(cap + 2);
4743         cap = cfg80211_find_ext_ie(WLAN_EID_EXT_HE_CAPABILITY, ies, ies_len);
4744         if (cap && cap[1] >= sizeof(*params->he_cap) + 1)
4745                 params->he_cap = (void *)(cap + 3);
4746 }
4747
4748 static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev,
4749                                    struct cfg80211_ap_settings *params)
4750 {
4751         struct wireless_dev *wdev;
4752         bool ret = false;
4753
4754         list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
4755                 if (wdev->iftype != NL80211_IFTYPE_AP &&
4756                     wdev->iftype != NL80211_IFTYPE_P2P_GO)
4757                         continue;
4758
4759                 if (!wdev->preset_chandef.chan)
4760                         continue;
4761
4762                 params->chandef = wdev->preset_chandef;
4763                 ret = true;
4764                 break;
4765         }
4766
4767         return ret;
4768 }
4769
4770 static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev,
4771                                     enum nl80211_auth_type auth_type,
4772                                     enum nl80211_commands cmd)
4773 {
4774         if (auth_type > NL80211_AUTHTYPE_MAX)
4775                 return false;
4776
4777         switch (cmd) {
4778         case NL80211_CMD_AUTHENTICATE:
4779                 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
4780                     auth_type == NL80211_AUTHTYPE_SAE)
4781                         return false;
4782                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
4783                                              NL80211_EXT_FEATURE_FILS_STA) &&
4784                     (auth_type == NL80211_AUTHTYPE_FILS_SK ||
4785                      auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
4786                      auth_type == NL80211_AUTHTYPE_FILS_PK))
4787                         return false;
4788                 return true;
4789         case NL80211_CMD_CONNECT:
4790                 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
4791                     !wiphy_ext_feature_isset(&rdev->wiphy,
4792                                              NL80211_EXT_FEATURE_SAE_OFFLOAD) &&
4793                     auth_type == NL80211_AUTHTYPE_SAE)
4794                         return false;
4795
4796                 /* FILS with SK PFS or PK not supported yet */
4797                 if (auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
4798                     auth_type == NL80211_AUTHTYPE_FILS_PK)
4799                         return false;
4800                 if (!wiphy_ext_feature_isset(
4801                             &rdev->wiphy,
4802                             NL80211_EXT_FEATURE_FILS_SK_OFFLOAD) &&
4803                     auth_type == NL80211_AUTHTYPE_FILS_SK)
4804                         return false;
4805                 return true;
4806         case NL80211_CMD_START_AP:
4807                 /* SAE not supported yet */
4808                 if (auth_type == NL80211_AUTHTYPE_SAE)
4809                         return false;
4810                 /* FILS not supported yet */
4811                 if (auth_type == NL80211_AUTHTYPE_FILS_SK ||
4812                     auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
4813                     auth_type == NL80211_AUTHTYPE_FILS_PK)
4814                         return false;
4815                 return true;
4816         default:
4817                 return false;
4818         }
4819 }
4820
4821 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
4822 {
4823         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4824         struct net_device *dev = info->user_ptr[1];
4825         struct wireless_dev *wdev = dev->ieee80211_ptr;
4826         struct cfg80211_ap_settings params;
4827         int err;
4828
4829         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4830             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4831                 return -EOPNOTSUPP;
4832
4833         if (!rdev->ops->start_ap)
4834                 return -EOPNOTSUPP;
4835
4836         if (wdev->beacon_interval)
4837                 return -EALREADY;
4838
4839         memset(&params, 0, sizeof(params));
4840
4841         /* these are required for START_AP */
4842         if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
4843             !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
4844             !info->attrs[NL80211_ATTR_BEACON_HEAD])
4845                 return -EINVAL;
4846
4847         err = nl80211_parse_beacon(rdev, info->attrs, &params.beacon);
4848         if (err)
4849                 return err;
4850
4851         params.beacon_interval =
4852                 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
4853         params.dtim_period =
4854                 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
4855
4856         err = cfg80211_validate_beacon_int(rdev, dev->ieee80211_ptr->iftype,
4857                                            params.beacon_interval);
4858         if (err)
4859                 return err;
4860
4861         /*
4862          * In theory, some of these attributes should be required here
4863          * but since they were not used when the command was originally
4864          * added, keep them optional for old user space programs to let
4865          * them continue to work with drivers that do not need the
4866          * additional information -- drivers must check!
4867          */
4868         if (info->attrs[NL80211_ATTR_SSID]) {
4869                 params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
4870                 params.ssid_len =
4871                         nla_len(info->attrs[NL80211_ATTR_SSID]);
4872                 if (params.ssid_len == 0 ||
4873                     params.ssid_len > IEEE80211_MAX_SSID_LEN)
4874                         return -EINVAL;
4875         }
4876
4877         if (info->attrs[NL80211_ATTR_HIDDEN_SSID])
4878                 params.hidden_ssid = nla_get_u32(
4879                         info->attrs[NL80211_ATTR_HIDDEN_SSID]);
4880
4881         params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
4882
4883         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
4884                 params.auth_type = nla_get_u32(
4885                         info->attrs[NL80211_ATTR_AUTH_TYPE]);
4886                 if (!nl80211_valid_auth_type(rdev, params.auth_type,
4887                                              NL80211_CMD_START_AP))
4888                         return -EINVAL;
4889         } else
4890                 params.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
4891
4892         err = nl80211_crypto_settings(rdev, info, &params.crypto,
4893                                       NL80211_MAX_NR_CIPHER_SUITES);
4894         if (err)
4895                 return err;
4896
4897         if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) {
4898                 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER))
4899                         return -EOPNOTSUPP;
4900                 params.inactivity_timeout = nla_get_u16(
4901                         info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]);
4902         }
4903
4904         if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
4905                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4906                         return -EINVAL;
4907                 params.p2p_ctwindow =
4908                         nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
4909                 if (params.p2p_ctwindow != 0 &&
4910                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
4911                         return -EINVAL;
4912         }
4913
4914         if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
4915                 u8 tmp;
4916
4917                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4918                         return -EINVAL;
4919                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
4920                 params.p2p_opp_ps = tmp;
4921                 if (params.p2p_opp_ps != 0 &&
4922                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
4923                         return -EINVAL;
4924         }
4925
4926         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
4927                 err = nl80211_parse_chandef(rdev, info, &params.chandef);
4928                 if (err)
4929                         return err;
4930         } else if (wdev->preset_chandef.chan) {
4931                 params.chandef = wdev->preset_chandef;
4932         } else if (!nl80211_get_ap_channel(rdev, &params))
4933                 return -EINVAL;
4934
4935         if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params.chandef,
4936                                            wdev->iftype))
4937                 return -EINVAL;
4938
4939         if (info->attrs[NL80211_ATTR_TX_RATES]) {
4940                 err = nl80211_parse_tx_bitrate_mask(info, &params.beacon_rate);
4941                 if (err)
4942                         return err;
4943
4944                 err = validate_beacon_tx_rate(rdev, params.chandef.chan->band,
4945                                               &params.beacon_rate);
4946                 if (err)
4947                         return err;
4948         }
4949
4950         if (info->attrs[NL80211_ATTR_SMPS_MODE]) {
4951                 params.smps_mode =
4952                         nla_get_u8(info->attrs[NL80211_ATTR_SMPS_MODE]);
4953                 switch (params.smps_mode) {
4954                 case NL80211_SMPS_OFF:
4955                         break;
4956                 case NL80211_SMPS_STATIC:
4957                         if (!(rdev->wiphy.features &
4958                               NL80211_FEATURE_STATIC_SMPS))
4959                                 return -EINVAL;
4960                         break;
4961                 case NL80211_SMPS_DYNAMIC:
4962                         if (!(rdev->wiphy.features &
4963                               NL80211_FEATURE_DYNAMIC_SMPS))
4964                                 return -EINVAL;
4965                         break;
4966                 default:
4967                         return -EINVAL;
4968                 }
4969         } else {
4970                 params.smps_mode = NL80211_SMPS_OFF;
4971         }
4972
4973         params.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
4974         if (params.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ])
4975                 return -EOPNOTSUPP;
4976
4977         if (info->attrs[NL80211_ATTR_ACL_POLICY]) {
4978                 params.acl = parse_acl_data(&rdev->wiphy, info);
4979                 if (IS_ERR(params.acl))
4980                         return PTR_ERR(params.acl);
4981         }
4982
4983         params.twt_responder =
4984                     nla_get_flag(info->attrs[NL80211_ATTR_TWT_RESPONDER]);
4985
4986         if (info->attrs[NL80211_ATTR_HE_OBSS_PD]) {
4987                 err = nl80211_parse_he_obss_pd(
4988                                         info->attrs[NL80211_ATTR_HE_OBSS_PD],
4989                                         &params.he_obss_pd);
4990                 goto out;
4991         }
4992
4993         if (info->attrs[NL80211_ATTR_HE_BSS_COLOR]) {
4994                 err = nl80211_parse_he_bss_color(
4995                                         info->attrs[NL80211_ATTR_HE_BSS_COLOR],
4996                                         &params.he_bss_color);
4997                 if (err)
4998                         return err;
4999         }
5000
5001         nl80211_calculate_ap_params(&params);
5002
5003         if (info->attrs[NL80211_ATTR_EXTERNAL_AUTH_SUPPORT])
5004                 params.flags |= AP_SETTINGS_EXTERNAL_AUTH_SUPPORT;
5005
5006         wdev_lock(wdev);
5007         err = rdev_start_ap(rdev, dev, &params);
5008         if (!err) {
5009                 wdev->preset_chandef = params.chandef;
5010                 wdev->beacon_interval = params.beacon_interval;
5011                 wdev->chandef = params.chandef;
5012                 wdev->ssid_len = params.ssid_len;
5013                 memcpy(wdev->ssid, params.ssid, wdev->ssid_len);
5014
5015                 if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
5016                         wdev->conn_owner_nlportid = info->snd_portid;
5017         }
5018         wdev_unlock(wdev);
5019
5020 out:
5021         kfree(params.acl);
5022
5023         return err;
5024 }
5025
5026 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info)
5027 {
5028         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5029         struct net_device *dev = info->user_ptr[1];
5030         struct wireless_dev *wdev = dev->ieee80211_ptr;
5031         struct cfg80211_beacon_data params;
5032         int err;
5033
5034         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5035             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5036                 return -EOPNOTSUPP;
5037
5038         if (!rdev->ops->change_beacon)
5039                 return -EOPNOTSUPP;
5040
5041         if (!wdev->beacon_interval)
5042                 return -EINVAL;
5043
5044         err = nl80211_parse_beacon(rdev, info->attrs, &params);
5045         if (err)
5046                 return err;
5047
5048         wdev_lock(wdev);
5049         err = rdev_change_beacon(rdev, dev, &params);
5050         wdev_unlock(wdev);
5051
5052         return err;
5053 }
5054
5055 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info)
5056 {
5057         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5058         struct net_device *dev = info->user_ptr[1];
5059
5060         return cfg80211_stop_ap(rdev, dev, false);
5061 }
5062
5063 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
5064         [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
5065         [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
5066         [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
5067         [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
5068         [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
5069         [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG },
5070 };
5071
5072 static int parse_station_flags(struct genl_info *info,
5073                                enum nl80211_iftype iftype,
5074                                struct station_parameters *params)
5075 {
5076         struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
5077         struct nlattr *nla;
5078         int flag;
5079
5080         /*
5081          * Try parsing the new attribute first so userspace
5082          * can specify both for older kernels.
5083          */
5084         nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
5085         if (nla) {
5086                 struct nl80211_sta_flag_update *sta_flags;
5087
5088                 sta_flags = nla_data(nla);
5089                 params->sta_flags_mask = sta_flags->mask;
5090                 params->sta_flags_set = sta_flags->set;
5091                 params->sta_flags_set &= params->sta_flags_mask;
5092                 if ((params->sta_flags_mask |
5093                      params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
5094                         return -EINVAL;
5095                 return 0;
5096         }
5097
5098         /* if present, parse the old attribute */
5099
5100         nla = info->attrs[NL80211_ATTR_STA_FLAGS];
5101         if (!nla)
5102                 return 0;
5103
5104         if (nla_parse_nested_deprecated(flags, NL80211_STA_FLAG_MAX, nla, sta_flags_policy, info->extack))
5105                 return -EINVAL;
5106
5107         /*
5108          * Only allow certain flags for interface types so that
5109          * other attributes are silently ignored. Remember that
5110          * this is backward compatibility code with old userspace
5111          * and shouldn't be hit in other cases anyway.
5112          */
5113         switch (iftype) {
5114         case NL80211_IFTYPE_AP:
5115         case NL80211_IFTYPE_AP_VLAN:
5116         case NL80211_IFTYPE_P2P_GO:
5117                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
5118                                          BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
5119                                          BIT(NL80211_STA_FLAG_WME) |
5120                                          BIT(NL80211_STA_FLAG_MFP);
5121                 break;
5122         case NL80211_IFTYPE_P2P_CLIENT:
5123         case NL80211_IFTYPE_STATION:
5124                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
5125                                          BIT(NL80211_STA_FLAG_TDLS_PEER);
5126                 break;
5127         case NL80211_IFTYPE_MESH_POINT:
5128                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
5129                                          BIT(NL80211_STA_FLAG_MFP) |
5130                                          BIT(NL80211_STA_FLAG_AUTHORIZED);
5131                 break;
5132         default:
5133                 return -EINVAL;
5134         }
5135
5136         for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) {
5137                 if (flags[flag]) {
5138                         params->sta_flags_set |= (1<<flag);
5139
5140                         /* no longer support new API additions in old API */
5141                         if (flag > NL80211_STA_FLAG_MAX_OLD_API)
5142                                 return -EINVAL;
5143                 }
5144         }
5145
5146         return 0;
5147 }
5148
5149 bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info, int attr)
5150 {
5151         struct nlattr *rate;
5152         u32 bitrate;
5153         u16 bitrate_compat;
5154         enum nl80211_rate_info rate_flg;
5155
5156         rate = nla_nest_start_noflag(msg, attr);
5157         if (!rate)
5158                 return false;
5159
5160         /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
5161         bitrate = cfg80211_calculate_bitrate(info);
5162         /* report 16-bit bitrate only if we can */
5163         bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0;
5164         if (bitrate > 0 &&
5165             nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate))
5166                 return false;
5167         if (bitrate_compat > 0 &&
5168             nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat))
5169                 return false;
5170
5171         switch (info->bw) {
5172         case RATE_INFO_BW_5:
5173                 rate_flg = NL80211_RATE_INFO_5_MHZ_WIDTH;
5174                 break;
5175         case RATE_INFO_BW_10:
5176                 rate_flg = NL80211_RATE_INFO_10_MHZ_WIDTH;
5177                 break;
5178         default:
5179                 WARN_ON(1);
5180                 /* fall through */
5181         case RATE_INFO_BW_20:
5182                 rate_flg = 0;
5183                 break;
5184         case RATE_INFO_BW_40:
5185                 rate_flg = NL80211_RATE_INFO_40_MHZ_WIDTH;
5186                 break;
5187         case RATE_INFO_BW_80:
5188                 rate_flg = NL80211_RATE_INFO_80_MHZ_WIDTH;
5189                 break;
5190         case RATE_INFO_BW_160:
5191                 rate_flg = NL80211_RATE_INFO_160_MHZ_WIDTH;
5192                 break;
5193         case RATE_INFO_BW_HE_RU:
5194                 rate_flg = 0;
5195                 WARN_ON(!(info->flags & RATE_INFO_FLAGS_HE_MCS));
5196         }
5197
5198         if (rate_flg && nla_put_flag(msg, rate_flg))
5199                 return false;
5200
5201         if (info->flags & RATE_INFO_FLAGS_MCS) {
5202                 if (nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs))
5203                         return false;
5204                 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
5205                     nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
5206                         return false;
5207         } else if (info->flags & RATE_INFO_FLAGS_VHT_MCS) {
5208                 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_MCS, info->mcs))
5209                         return false;
5210                 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_NSS, info->nss))
5211                         return false;
5212                 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
5213                     nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
5214                         return false;
5215         } else if (info->flags & RATE_INFO_FLAGS_HE_MCS) {
5216                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_MCS, info->mcs))
5217                         return false;
5218                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_NSS, info->nss))
5219                         return false;
5220                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_GI, info->he_gi))
5221                         return false;
5222                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_DCM, info->he_dcm))
5223                         return false;
5224                 if (info->bw == RATE_INFO_BW_HE_RU &&
5225                     nla_put_u8(msg, NL80211_RATE_INFO_HE_RU_ALLOC,
5226                                info->he_ru_alloc))
5227                         return false;
5228         }
5229
5230         nla_nest_end(msg, rate);
5231         return true;
5232 }
5233
5234 static bool nl80211_put_signal(struct sk_buff *msg, u8 mask, s8 *signal,
5235                                int id)
5236 {
5237         void *attr;
5238         int i = 0;
5239
5240         if (!mask)
5241                 return true;
5242
5243         attr = nla_nest_start_noflag(msg, id);
5244         if (!attr)
5245                 return false;
5246
5247         for (i = 0; i < IEEE80211_MAX_CHAINS; i++) {
5248                 if (!(mask & BIT(i)))
5249                         continue;
5250
5251                 if (nla_put_u8(msg, i, signal[i]))
5252                         return false;
5253         }
5254
5255         nla_nest_end(msg, attr);
5256
5257         return true;
5258 }
5259
5260 static int nl80211_send_station(struct sk_buff *msg, u32 cmd, u32 portid,
5261                                 u32 seq, int flags,
5262                                 struct cfg80211_registered_device *rdev,
5263                                 struct net_device *dev,
5264                                 const u8 *mac_addr, struct station_info *sinfo)
5265 {
5266         void *hdr;
5267         struct nlattr *sinfoattr, *bss_param;
5268
5269         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
5270         if (!hdr) {
5271                 cfg80211_sinfo_release_content(sinfo);
5272                 return -1;
5273         }
5274
5275         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
5276             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
5277             nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation))
5278                 goto nla_put_failure;
5279
5280         sinfoattr = nla_nest_start_noflag(msg, NL80211_ATTR_STA_INFO);
5281         if (!sinfoattr)
5282                 goto nla_put_failure;
5283
5284 #define PUT_SINFO(attr, memb, type) do {                                \
5285         BUILD_BUG_ON(sizeof(type) == sizeof(u64));                      \
5286         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_ ## attr) &&       \
5287             nla_put_ ## type(msg, NL80211_STA_INFO_ ## attr,            \
5288                              sinfo->memb))                              \
5289                 goto nla_put_failure;                                   \
5290         } while (0)
5291 #define PUT_SINFO_U64(attr, memb) do {                                  \
5292         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_ ## attr) &&       \
5293             nla_put_u64_64bit(msg, NL80211_STA_INFO_ ## attr,           \
5294                               sinfo->memb, NL80211_STA_INFO_PAD))       \
5295                 goto nla_put_failure;                                   \
5296         } while (0)
5297
5298         PUT_SINFO(CONNECTED_TIME, connected_time, u32);
5299         PUT_SINFO(INACTIVE_TIME, inactive_time, u32);
5300         PUT_SINFO_U64(ASSOC_AT_BOOTTIME, assoc_at);
5301
5302         if (sinfo->filled & (BIT_ULL(NL80211_STA_INFO_RX_BYTES) |
5303                              BIT_ULL(NL80211_STA_INFO_RX_BYTES64)) &&
5304             nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES,
5305                         (u32)sinfo->rx_bytes))
5306                 goto nla_put_failure;
5307
5308         if (sinfo->filled & (BIT_ULL(NL80211_STA_INFO_TX_BYTES) |
5309                              BIT_ULL(NL80211_STA_INFO_TX_BYTES64)) &&
5310             nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES,
5311                         (u32)sinfo->tx_bytes))
5312                 goto nla_put_failure;
5313
5314         PUT_SINFO_U64(RX_BYTES64, rx_bytes);
5315         PUT_SINFO_U64(TX_BYTES64, tx_bytes);
5316         PUT_SINFO(LLID, llid, u16);
5317         PUT_SINFO(PLID, plid, u16);
5318         PUT_SINFO(PLINK_STATE, plink_state, u8);
5319         PUT_SINFO_U64(RX_DURATION, rx_duration);
5320         PUT_SINFO_U64(TX_DURATION, tx_duration);
5321
5322         if (wiphy_ext_feature_isset(&rdev->wiphy,
5323                                     NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
5324                 PUT_SINFO(AIRTIME_WEIGHT, airtime_weight, u16);
5325
5326         switch (rdev->wiphy.signal_type) {
5327         case CFG80211_SIGNAL_TYPE_MBM:
5328                 PUT_SINFO(SIGNAL, signal, u8);
5329                 PUT_SINFO(SIGNAL_AVG, signal_avg, u8);
5330                 break;
5331         default:
5332                 break;
5333         }
5334         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL)) {
5335                 if (!nl80211_put_signal(msg, sinfo->chains,
5336                                         sinfo->chain_signal,
5337                                         NL80211_STA_INFO_CHAIN_SIGNAL))
5338                         goto nla_put_failure;
5339         }
5340         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL_AVG)) {
5341                 if (!nl80211_put_signal(msg, sinfo->chains,
5342                                         sinfo->chain_signal_avg,
5343                                         NL80211_STA_INFO_CHAIN_SIGNAL_AVG))
5344                         goto nla_put_failure;
5345         }
5346         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_TX_BITRATE)) {
5347                 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
5348                                           NL80211_STA_INFO_TX_BITRATE))
5349                         goto nla_put_failure;
5350         }
5351         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_RX_BITRATE)) {
5352                 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
5353                                           NL80211_STA_INFO_RX_BITRATE))
5354                         goto nla_put_failure;
5355         }
5356
5357         PUT_SINFO(RX_PACKETS, rx_packets, u32);
5358         PUT_SINFO(TX_PACKETS, tx_packets, u32);
5359         PUT_SINFO(TX_RETRIES, tx_retries, u32);
5360         PUT_SINFO(TX_FAILED, tx_failed, u32);
5361         PUT_SINFO(EXPECTED_THROUGHPUT, expected_throughput, u32);
5362         PUT_SINFO(AIRTIME_LINK_METRIC, airtime_link_metric, u32);
5363         PUT_SINFO(BEACON_LOSS, beacon_loss_count, u32);
5364         PUT_SINFO(LOCAL_PM, local_pm, u32);
5365         PUT_SINFO(PEER_PM, peer_pm, u32);
5366         PUT_SINFO(NONPEER_PM, nonpeer_pm, u32);
5367         PUT_SINFO(CONNECTED_TO_GATE, connected_to_gate, u8);
5368
5369         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_BSS_PARAM)) {
5370                 bss_param = nla_nest_start_noflag(msg,
5371                                                   NL80211_STA_INFO_BSS_PARAM);
5372                 if (!bss_param)
5373                         goto nla_put_failure;
5374
5375                 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) &&
5376                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) ||
5377                     ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) &&
5378                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) ||
5379                     ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) &&
5380                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) ||
5381                     nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
5382                                sinfo->bss_param.dtim_period) ||
5383                     nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
5384                                 sinfo->bss_param.beacon_interval))
5385                         goto nla_put_failure;
5386
5387                 nla_nest_end(msg, bss_param);
5388         }
5389         if ((sinfo->filled & BIT_ULL(NL80211_STA_INFO_STA_FLAGS)) &&
5390             nla_put(msg, NL80211_STA_INFO_STA_FLAGS,
5391                     sizeof(struct nl80211_sta_flag_update),
5392                     &sinfo->sta_flags))
5393                 goto nla_put_failure;
5394
5395         PUT_SINFO_U64(T_OFFSET, t_offset);
5396         PUT_SINFO_U64(RX_DROP_MISC, rx_dropped_misc);
5397         PUT_SINFO_U64(BEACON_RX, rx_beacon);
5398         PUT_SINFO(BEACON_SIGNAL_AVG, rx_beacon_signal_avg, u8);
5399         PUT_SINFO(RX_MPDUS, rx_mpdu_count, u32);
5400         PUT_SINFO(FCS_ERROR_COUNT, fcs_err_count, u32);
5401         if (wiphy_ext_feature_isset(&rdev->wiphy,
5402                                     NL80211_EXT_FEATURE_ACK_SIGNAL_SUPPORT)) {
5403                 PUT_SINFO(ACK_SIGNAL, ack_signal, u8);
5404                 PUT_SINFO(ACK_SIGNAL_AVG, avg_ack_signal, s8);
5405         }
5406
5407 #undef PUT_SINFO
5408 #undef PUT_SINFO_U64
5409
5410         if (sinfo->pertid) {
5411                 struct nlattr *tidsattr;
5412                 int tid;
5413
5414                 tidsattr = nla_nest_start_noflag(msg,
5415                                                  NL80211_STA_INFO_TID_STATS);
5416                 if (!tidsattr)
5417                         goto nla_put_failure;
5418
5419                 for (tid = 0; tid < IEEE80211_NUM_TIDS + 1; tid++) {
5420                         struct cfg80211_tid_stats *tidstats;
5421                         struct nlattr *tidattr;
5422
5423                         tidstats = &sinfo->pertid[tid];
5424
5425                         if (!tidstats->filled)
5426                                 continue;
5427
5428                         tidattr = nla_nest_start_noflag(msg, tid + 1);
5429                         if (!tidattr)
5430                                 goto nla_put_failure;
5431
5432 #define PUT_TIDVAL_U64(attr, memb) do {                                 \
5433         if (tidstats->filled & BIT(NL80211_TID_STATS_ ## attr) &&       \
5434             nla_put_u64_64bit(msg, NL80211_TID_STATS_ ## attr,          \
5435                               tidstats->memb, NL80211_TID_STATS_PAD))   \
5436                 goto nla_put_failure;                                   \
5437         } while (0)
5438
5439                         PUT_TIDVAL_U64(RX_MSDU, rx_msdu);
5440                         PUT_TIDVAL_U64(TX_MSDU, tx_msdu);
5441                         PUT_TIDVAL_U64(TX_MSDU_RETRIES, tx_msdu_retries);
5442                         PUT_TIDVAL_U64(TX_MSDU_FAILED, tx_msdu_failed);
5443
5444 #undef PUT_TIDVAL_U64
5445                         if ((tidstats->filled &
5446                              BIT(NL80211_TID_STATS_TXQ_STATS)) &&
5447                             !nl80211_put_txq_stats(msg, &tidstats->txq_stats,
5448                                                    NL80211_TID_STATS_TXQ_STATS))
5449                                 goto nla_put_failure;
5450
5451                         nla_nest_end(msg, tidattr);
5452                 }
5453
5454                 nla_nest_end(msg, tidsattr);
5455         }
5456
5457         nla_nest_end(msg, sinfoattr);
5458
5459         if (sinfo->assoc_req_ies_len &&
5460             nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
5461                     sinfo->assoc_req_ies))
5462                 goto nla_put_failure;
5463
5464         cfg80211_sinfo_release_content(sinfo);
5465         genlmsg_end(msg, hdr);
5466         return 0;
5467
5468  nla_put_failure:
5469         cfg80211_sinfo_release_content(sinfo);
5470         genlmsg_cancel(msg, hdr);
5471         return -EMSGSIZE;
5472 }
5473
5474 static int nl80211_dump_station(struct sk_buff *skb,
5475                                 struct netlink_callback *cb)
5476 {
5477         struct station_info sinfo;
5478         struct cfg80211_registered_device *rdev;
5479         struct wireless_dev *wdev;
5480         u8 mac_addr[ETH_ALEN];
5481         int sta_idx = cb->args[2];
5482         int err;
5483
5484         rtnl_lock();
5485         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
5486         if (err)
5487                 goto out_err;
5488
5489         if (!wdev->netdev) {
5490                 err = -EINVAL;
5491                 goto out_err;
5492         }
5493
5494         if (!rdev->ops->dump_station) {
5495                 err = -EOPNOTSUPP;
5496                 goto out_err;
5497         }
5498
5499         while (1) {
5500                 memset(&sinfo, 0, sizeof(sinfo));
5501                 err = rdev_dump_station(rdev, wdev->netdev, sta_idx,
5502                                         mac_addr, &sinfo);
5503                 if (err == -ENOENT)
5504                         break;
5505                 if (err)
5506                         goto out_err;
5507
5508                 if (nl80211_send_station(skb, NL80211_CMD_NEW_STATION,
5509                                 NETLINK_CB(cb->skb).portid,
5510                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
5511                                 rdev, wdev->netdev, mac_addr,
5512                                 &sinfo) < 0)
5513                         goto out;
5514
5515                 sta_idx++;
5516         }
5517
5518  out:
5519         cb->args[2] = sta_idx;
5520         err = skb->len;
5521  out_err:
5522         rtnl_unlock();
5523
5524         return err;
5525 }
5526
5527 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
5528 {
5529         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5530         struct net_device *dev = info->user_ptr[1];
5531         struct station_info sinfo;
5532         struct sk_buff *msg;
5533         u8 *mac_addr = NULL;
5534         int err;
5535
5536         memset(&sinfo, 0, sizeof(sinfo));
5537
5538         if (!info->attrs[NL80211_ATTR_MAC])
5539                 return -EINVAL;
5540
5541         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
5542
5543         if (!rdev->ops->get_station)
5544                 return -EOPNOTSUPP;
5545
5546         err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
5547         if (err)
5548                 return err;
5549
5550         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5551         if (!msg) {
5552                 cfg80211_sinfo_release_content(&sinfo);
5553                 return -ENOMEM;
5554         }
5555
5556         if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION,
5557                                  info->snd_portid, info->snd_seq, 0,
5558                                  rdev, dev, mac_addr, &sinfo) < 0) {
5559                 nlmsg_free(msg);
5560                 return -ENOBUFS;
5561         }
5562
5563         return genlmsg_reply(msg, info);
5564 }
5565
5566 int cfg80211_check_station_change(struct wiphy *wiphy,
5567                                   struct station_parameters *params,
5568                                   enum cfg80211_station_type statype)
5569 {
5570         if (params->listen_interval != -1 &&
5571             statype != CFG80211_STA_AP_CLIENT_UNASSOC)
5572                 return -EINVAL;
5573
5574         if (params->support_p2p_ps != -1 &&
5575             statype != CFG80211_STA_AP_CLIENT_UNASSOC)
5576                 return -EINVAL;
5577
5578         if (params->aid &&
5579             !(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) &&
5580             statype != CFG80211_STA_AP_CLIENT_UNASSOC)
5581                 return -EINVAL;
5582
5583         /* When you run into this, adjust the code below for the new flag */
5584         BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
5585
5586         switch (statype) {
5587         case CFG80211_STA_MESH_PEER_KERNEL:
5588         case CFG80211_STA_MESH_PEER_USER:
5589                 /*
5590                  * No ignoring the TDLS flag here -- the userspace mesh
5591                  * code doesn't have the bug of including TDLS in the
5592                  * mask everywhere.
5593                  */
5594                 if (params->sta_flags_mask &
5595                                 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
5596                                   BIT(NL80211_STA_FLAG_MFP) |
5597                                   BIT(NL80211_STA_FLAG_AUTHORIZED)))
5598                         return -EINVAL;
5599                 break;
5600         case CFG80211_STA_TDLS_PEER_SETUP:
5601         case CFG80211_STA_TDLS_PEER_ACTIVE:
5602                 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
5603                         return -EINVAL;
5604                 /* ignore since it can't change */
5605                 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
5606                 break;
5607         default:
5608                 /* disallow mesh-specific things */
5609                 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
5610                         return -EINVAL;
5611                 if (params->local_pm)
5612                         return -EINVAL;
5613                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
5614                         return -EINVAL;
5615         }
5616
5617         if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
5618             statype != CFG80211_STA_TDLS_PEER_ACTIVE) {
5619                 /* TDLS can't be set, ... */
5620                 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
5621                         return -EINVAL;
5622                 /*
5623                  * ... but don't bother the driver with it. This works around
5624                  * a hostapd/wpa_supplicant issue -- it always includes the
5625                  * TLDS_PEER flag in the mask even for AP mode.
5626                  */
5627                 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
5628         }
5629
5630         if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
5631             statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
5632                 /* reject other things that can't change */
5633                 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD)
5634                         return -EINVAL;
5635                 if (params->sta_modify_mask & STATION_PARAM_APPLY_CAPABILITY)
5636                         return -EINVAL;
5637                 if (params->supported_rates)
5638                         return -EINVAL;
5639                 if (params->ext_capab || params->ht_capa || params->vht_capa ||
5640                     params->he_capa)
5641                         return -EINVAL;
5642         }
5643
5644         if (statype != CFG80211_STA_AP_CLIENT &&
5645             statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
5646                 if (params->vlan)
5647                         return -EINVAL;
5648         }
5649
5650         switch (statype) {
5651         case CFG80211_STA_AP_MLME_CLIENT:
5652                 /* Use this only for authorizing/unauthorizing a station */
5653                 if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)))
5654                         return -EOPNOTSUPP;
5655                 break;
5656         case CFG80211_STA_AP_CLIENT:
5657         case CFG80211_STA_AP_CLIENT_UNASSOC:
5658                 /* accept only the listed bits */
5659                 if (params->sta_flags_mask &
5660                                 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
5661                                   BIT(NL80211_STA_FLAG_AUTHENTICATED) |
5662                                   BIT(NL80211_STA_FLAG_ASSOCIATED) |
5663                                   BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
5664                                   BIT(NL80211_STA_FLAG_WME) |
5665                                   BIT(NL80211_STA_FLAG_MFP)))
5666                         return -EINVAL;
5667
5668                 /* but authenticated/associated only if driver handles it */
5669                 if (!(wiphy->features & NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
5670                     params->sta_flags_mask &
5671                                 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
5672                                  BIT(NL80211_STA_FLAG_ASSOCIATED)))
5673                         return -EINVAL;
5674                 break;
5675         case CFG80211_STA_IBSS:
5676         case CFG80211_STA_AP_STA:
5677                 /* reject any changes other than AUTHORIZED */
5678                 if (params->sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
5679                         return -EINVAL;
5680                 break;
5681         case CFG80211_STA_TDLS_PEER_SETUP:
5682                 /* reject any changes other than AUTHORIZED or WME */
5683                 if (params->sta_flags_mask & ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
5684                                                BIT(NL80211_STA_FLAG_WME)))
5685                         return -EINVAL;
5686                 /* force (at least) rates when authorizing */
5687                 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED) &&
5688                     !params->supported_rates)
5689                         return -EINVAL;
5690                 break;
5691         case CFG80211_STA_TDLS_PEER_ACTIVE:
5692                 /* reject any changes */
5693                 return -EINVAL;
5694         case CFG80211_STA_MESH_PEER_KERNEL:
5695                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
5696                         return -EINVAL;
5697                 break;
5698         case CFG80211_STA_MESH_PEER_USER:
5699                 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION &&
5700                     params->plink_action != NL80211_PLINK_ACTION_BLOCK)
5701                         return -EINVAL;
5702                 break;
5703         }
5704
5705         /*
5706          * Older kernel versions ignored this attribute entirely, so don't
5707          * reject attempts to update it but mark it as unused instead so the
5708          * driver won't look at the data.
5709          */
5710         if (statype != CFG80211_STA_AP_CLIENT_UNASSOC &&
5711             statype != CFG80211_STA_TDLS_PEER_SETUP)
5712                 params->opmode_notif_used = false;
5713
5714         return 0;
5715 }
5716 EXPORT_SYMBOL(cfg80211_check_station_change);
5717
5718 /*
5719  * Get vlan interface making sure it is running and on the right wiphy.
5720  */
5721 static struct net_device *get_vlan(struct genl_info *info,
5722                                    struct cfg80211_registered_device *rdev)
5723 {
5724         struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
5725         struct net_device *v;
5726         int ret;
5727
5728         if (!vlanattr)
5729                 return NULL;
5730
5731         v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr));
5732         if (!v)
5733                 return ERR_PTR(-ENODEV);
5734
5735         if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) {
5736                 ret = -EINVAL;
5737                 goto error;
5738         }
5739
5740         if (v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
5741             v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5742             v->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
5743                 ret = -EINVAL;
5744                 goto error;
5745         }
5746
5747         if (!netif_running(v)) {
5748                 ret = -ENETDOWN;
5749                 goto error;
5750         }
5751
5752         return v;
5753  error:
5754         dev_put(v);
5755         return ERR_PTR(ret);
5756 }
5757
5758 static const struct nla_policy
5759 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] = {
5760         [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
5761         [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
5762 };
5763
5764 static int nl80211_parse_sta_wme(struct genl_info *info,
5765                                  struct station_parameters *params)
5766 {
5767         struct nlattr *tb[NL80211_STA_WME_MAX + 1];
5768         struct nlattr *nla;
5769         int err;
5770
5771         /* parse WME attributes if present */
5772         if (!info->attrs[NL80211_ATTR_STA_WME])
5773                 return 0;
5774
5775         nla = info->attrs[NL80211_ATTR_STA_WME];
5776         err = nla_parse_nested_deprecated(tb, NL80211_STA_WME_MAX, nla,
5777                                           nl80211_sta_wme_policy,
5778                                           info->extack);
5779         if (err)
5780                 return err;
5781
5782         if (tb[NL80211_STA_WME_UAPSD_QUEUES])
5783                 params->uapsd_queues = nla_get_u8(
5784                         tb[NL80211_STA_WME_UAPSD_QUEUES]);
5785         if (params->uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
5786                 return -EINVAL;
5787
5788         if (tb[NL80211_STA_WME_MAX_SP])
5789                 params->max_sp = nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
5790
5791         if (params->max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
5792                 return -EINVAL;
5793
5794         params->sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
5795
5796         return 0;
5797 }
5798
5799 static int nl80211_parse_sta_channel_info(struct genl_info *info,
5800                                       struct station_parameters *params)
5801 {
5802         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]) {
5803                 params->supported_channels =
5804                      nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
5805                 params->supported_channels_len =
5806                      nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
5807                 /*
5808                  * Need to include at least one (first channel, number of
5809                  * channels) tuple for each subband, and must have proper
5810                  * tuples for the rest of the data as well.
5811                  */
5812                 if (params->supported_channels_len < 2)
5813                         return -EINVAL;
5814                 if (params->supported_channels_len % 2)
5815                         return -EINVAL;
5816         }
5817
5818         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]) {
5819                 params->supported_oper_classes =
5820                  nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
5821                 params->supported_oper_classes_len =
5822                   nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
5823                 /*
5824                  * The value of the Length field of the Supported Operating
5825                  * Classes element is between 2 and 253.
5826                  */
5827                 if (params->supported_oper_classes_len < 2 ||
5828                     params->supported_oper_classes_len > 253)
5829                         return -EINVAL;
5830         }
5831         return 0;
5832 }
5833
5834 static int nl80211_set_station_tdls(struct genl_info *info,
5835                                     struct station_parameters *params)
5836 {
5837         int err;
5838         /* Dummy STA entry gets updated once the peer capabilities are known */
5839         if (info->attrs[NL80211_ATTR_PEER_AID])
5840                 params->aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
5841         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
5842                 params->ht_capa =
5843                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
5844         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
5845                 params->vht_capa =
5846                         nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
5847         if (info->attrs[NL80211_ATTR_HE_CAPABILITY]) {
5848                 params->he_capa =
5849                         nla_data(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
5850                 params->he_capa_len =
5851                         nla_len(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
5852
5853                 if (params->he_capa_len < NL80211_HE_MIN_CAPABILITY_LEN)
5854                         return -EINVAL;
5855         }
5856
5857         err = nl80211_parse_sta_channel_info(info, params);
5858         if (err)
5859                 return err;
5860
5861         return nl80211_parse_sta_wme(info, params);
5862 }
5863
5864 static int nl80211_parse_sta_txpower_setting(struct genl_info *info,
5865                                              struct station_parameters *params)
5866 {
5867         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5868         int idx;
5869
5870         if (info->attrs[NL80211_ATTR_STA_TX_POWER_SETTING]) {
5871                 if (!rdev->ops->set_tx_power ||
5872                     !wiphy_ext_feature_isset(&rdev->wiphy,
5873                                          NL80211_EXT_FEATURE_STA_TX_PWR))
5874                         return -EOPNOTSUPP;
5875
5876                 idx = NL80211_ATTR_STA_TX_POWER_SETTING;
5877                 params->txpwr.type = nla_get_u8(info->attrs[idx]);
5878
5879                 if (params->txpwr.type == NL80211_TX_POWER_LIMITED) {
5880                         idx = NL80211_ATTR_STA_TX_POWER;
5881
5882                         if (info->attrs[idx])
5883                                 params->txpwr.power =
5884                                         nla_get_s16(info->attrs[idx]);
5885                         else
5886                                 return -EINVAL;
5887                 }
5888                 params->sta_modify_mask |= STATION_PARAM_APPLY_STA_TXPOWER;
5889         }
5890
5891         return 0;
5892 }
5893
5894 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
5895 {
5896         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5897         struct net_device *dev = info->user_ptr[1];
5898         struct station_parameters params;
5899         u8 *mac_addr;
5900         int err;
5901
5902         memset(&params, 0, sizeof(params));
5903
5904         if (!rdev->ops->change_station)
5905                 return -EOPNOTSUPP;
5906
5907         /*
5908          * AID and listen_interval properties can be set only for unassociated
5909          * station. Include these parameters here and will check them in
5910          * cfg80211_check_station_change().
5911          */
5912         if (info->attrs[NL80211_ATTR_STA_AID])
5913                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
5914
5915         if (info->attrs[NL80211_ATTR_VLAN_ID])
5916                 params.vlan_id = nla_get_u16(info->attrs[NL80211_ATTR_VLAN_ID]);
5917
5918         if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
5919                 params.listen_interval =
5920                      nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
5921         else
5922                 params.listen_interval = -1;
5923
5924         if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS])
5925                 params.support_p2p_ps =
5926                         nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
5927         else
5928                 params.support_p2p_ps = -1;
5929
5930         if (!info->attrs[NL80211_ATTR_MAC])
5931                 return -EINVAL;
5932
5933         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
5934
5935         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
5936                 params.supported_rates =
5937                         nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
5938                 params.supported_rates_len =
5939                         nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
5940         }
5941
5942         if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
5943                 params.capability =
5944                         nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
5945                 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
5946         }
5947
5948         if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
5949                 params.ext_capab =
5950                         nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
5951                 params.ext_capab_len =
5952                         nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
5953         }
5954
5955         if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
5956                 return -EINVAL;
5957
5958         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
5959                 params.plink_action =
5960                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
5961
5962         if (info->attrs[NL80211_ATTR_STA_PLINK_STATE]) {
5963                 params.plink_state =
5964                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
5965                 if (info->attrs[NL80211_ATTR_MESH_PEER_AID])
5966                         params.peer_aid = nla_get_u16(
5967                                 info->attrs[NL80211_ATTR_MESH_PEER_AID]);
5968                 params.sta_modify_mask |= STATION_PARAM_APPLY_PLINK_STATE;
5969         }
5970
5971         if (info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE])
5972                 params.local_pm = nla_get_u32(
5973                         info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]);
5974
5975         if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
5976                 params.opmode_notif_used = true;
5977                 params.opmode_notif =
5978                         nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
5979         }
5980
5981         if (info->attrs[NL80211_ATTR_AIRTIME_WEIGHT])
5982                 params.airtime_weight =
5983                         nla_get_u16(info->attrs[NL80211_ATTR_AIRTIME_WEIGHT]);
5984
5985         if (params.airtime_weight &&
5986             !wiphy_ext_feature_isset(&rdev->wiphy,
5987                                      NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
5988                 return -EOPNOTSUPP;
5989
5990         err = nl80211_parse_sta_txpower_setting(info, &params);
5991         if (err)
5992                 return err;
5993
5994         /* Include parameters for TDLS peer (will check later) */
5995         err = nl80211_set_station_tdls(info, &params);
5996         if (err)
5997                 return err;
5998
5999         params.vlan = get_vlan(info, rdev);
6000         if (IS_ERR(params.vlan))
6001                 return PTR_ERR(params.vlan);
6002
6003         switch (dev->ieee80211_ptr->iftype) {
6004         case NL80211_IFTYPE_AP:
6005         case NL80211_IFTYPE_AP_VLAN:
6006         case NL80211_IFTYPE_P2P_GO:
6007         case NL80211_IFTYPE_P2P_CLIENT:
6008         case NL80211_IFTYPE_STATION:
6009         case NL80211_IFTYPE_ADHOC:
6010         case NL80211_IFTYPE_MESH_POINT:
6011                 break;
6012         default:
6013                 err = -EOPNOTSUPP;
6014                 goto out_put_vlan;
6015         }
6016
6017         /* driver will call cfg80211_check_station_change() */
6018         err = rdev_change_station(rdev, dev, mac_addr, &params);
6019
6020  out_put_vlan:
6021         if (params.vlan)
6022                 dev_put(params.vlan);
6023
6024         return err;
6025 }
6026
6027 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
6028 {
6029         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6030         int err;
6031         struct net_device *dev = info->user_ptr[1];
6032         struct station_parameters params;
6033         u8 *mac_addr = NULL;
6034         u32 auth_assoc = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
6035                          BIT(NL80211_STA_FLAG_ASSOCIATED);
6036
6037         memset(&params, 0, sizeof(params));
6038
6039         if (!rdev->ops->add_station)
6040                 return -EOPNOTSUPP;
6041
6042         if (!info->attrs[NL80211_ATTR_MAC])
6043                 return -EINVAL;
6044
6045         if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
6046                 return -EINVAL;
6047
6048         if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
6049                 return -EINVAL;
6050
6051         if (!info->attrs[NL80211_ATTR_STA_AID] &&
6052             !info->attrs[NL80211_ATTR_PEER_AID])
6053                 return -EINVAL;
6054
6055         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
6056         params.supported_rates =
6057                 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
6058         params.supported_rates_len =
6059                 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
6060         params.listen_interval =
6061                 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
6062
6063         if (info->attrs[NL80211_ATTR_VLAN_ID])
6064                 params.vlan_id = nla_get_u16(info->attrs[NL80211_ATTR_VLAN_ID]);
6065
6066         if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]) {
6067                 params.support_p2p_ps =
6068                         nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
6069         } else {
6070                 /*
6071                  * if not specified, assume it's supported for P2P GO interface,
6072                  * and is NOT supported for AP interface
6073                  */
6074                 params.support_p2p_ps =
6075                         dev->ieee80211_ptr->iftype == NL80211_IFTYPE_P2P_GO;
6076         }
6077
6078         if (info->attrs[NL80211_ATTR_PEER_AID])
6079                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
6080         else
6081                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
6082
6083         if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
6084                 params.capability =
6085                         nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
6086                 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
6087         }
6088
6089         if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
6090                 params.ext_capab =
6091                         nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
6092                 params.ext_capab_len =
6093                         nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
6094         }
6095
6096         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
6097                 params.ht_capa =
6098                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
6099
6100         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
6101                 params.vht_capa =
6102                         nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
6103
6104         if (info->attrs[NL80211_ATTR_HE_CAPABILITY]) {
6105                 params.he_capa =
6106                         nla_data(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
6107                 params.he_capa_len =
6108                         nla_len(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
6109
6110                 /* max len is validated in nla policy */
6111                 if (params.he_capa_len < NL80211_HE_MIN_CAPABILITY_LEN)
6112                         return -EINVAL;
6113         }
6114
6115         if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
6116                 params.opmode_notif_used = true;
6117                 params.opmode_notif =
6118                         nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
6119         }
6120
6121         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
6122                 params.plink_action =
6123                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
6124
6125         if (info->attrs[NL80211_ATTR_AIRTIME_WEIGHT])
6126                 params.airtime_weight =
6127                         nla_get_u16(info->attrs[NL80211_ATTR_AIRTIME_WEIGHT]);
6128
6129         if (params.airtime_weight &&
6130             !wiphy_ext_feature_isset(&rdev->wiphy,
6131                                      NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
6132                 return -EOPNOTSUPP;
6133
6134         err = nl80211_parse_sta_txpower_setting(info, &params);
6135         if (err)
6136                 return err;
6137
6138         err = nl80211_parse_sta_channel_info(info, &params);
6139         if (err)
6140                 return err;
6141
6142         err = nl80211_parse_sta_wme(info, &params);
6143         if (err)
6144                 return err;
6145
6146         if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
6147                 return -EINVAL;
6148
6149         /* HT/VHT requires QoS, but if we don't have that just ignore HT/VHT
6150          * as userspace might just pass through the capabilities from the IEs
6151          * directly, rather than enforcing this restriction and returning an
6152          * error in this case.
6153          */
6154         if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME))) {
6155                 params.ht_capa = NULL;
6156                 params.vht_capa = NULL;
6157
6158                 /* HE requires WME */
6159                 if (params.he_capa_len)
6160                         return -EINVAL;
6161         }
6162
6163         /* When you run into this, adjust the code below for the new flag */
6164         BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
6165
6166         switch (dev->ieee80211_ptr->iftype) {
6167         case NL80211_IFTYPE_AP:
6168         case NL80211_IFTYPE_AP_VLAN:
6169         case NL80211_IFTYPE_P2P_GO:
6170                 /* ignore WME attributes if iface/sta is not capable */
6171                 if (!(rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) ||
6172                     !(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)))
6173                         params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
6174
6175                 /* TDLS peers cannot be added */
6176                 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
6177                     info->attrs[NL80211_ATTR_PEER_AID])
6178                         return -EINVAL;
6179                 /* but don't bother the driver with it */
6180                 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
6181
6182                 /* allow authenticated/associated only if driver handles it */
6183                 if (!(rdev->wiphy.features &
6184                                 NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
6185                     params.sta_flags_mask & auth_assoc)
6186                         return -EINVAL;
6187
6188                 /* Older userspace, or userspace wanting to be compatible with
6189                  * !NL80211_FEATURE_FULL_AP_CLIENT_STATE, will not set the auth
6190                  * and assoc flags in the mask, but assumes the station will be
6191                  * added as associated anyway since this was the required driver
6192                  * behaviour before NL80211_FEATURE_FULL_AP_CLIENT_STATE was
6193                  * introduced.
6194                  * In order to not bother drivers with this quirk in the API
6195                  * set the flags in both the mask and set for new stations in
6196                  * this case.
6197                  */
6198                 if (!(params.sta_flags_mask & auth_assoc)) {
6199                         params.sta_flags_mask |= auth_assoc;
6200                         params.sta_flags_set |= auth_assoc;
6201                 }
6202
6203                 /* must be last in here for error handling */
6204                 params.vlan = get_vlan(info, rdev);
6205                 if (IS_ERR(params.vlan))
6206                         return PTR_ERR(params.vlan);
6207                 break;
6208         case NL80211_IFTYPE_MESH_POINT:
6209                 /* ignore uAPSD data */
6210                 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
6211
6212                 /* associated is disallowed */
6213                 if (params.sta_flags_mask & BIT(NL80211_STA_FLAG_ASSOCIATED))
6214                         return -EINVAL;
6215                 /* TDLS peers cannot be added */
6216                 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
6217                     info->attrs[NL80211_ATTR_PEER_AID])
6218                         return -EINVAL;
6219                 break;
6220         case NL80211_IFTYPE_STATION:
6221         case NL80211_IFTYPE_P2P_CLIENT:
6222                 /* ignore uAPSD data */
6223                 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
6224
6225                 /* these are disallowed */
6226                 if (params.sta_flags_mask &
6227                                 (BIT(NL80211_STA_FLAG_ASSOCIATED) |
6228                                  BIT(NL80211_STA_FLAG_AUTHENTICATED)))
6229                         return -EINVAL;
6230                 /* Only TDLS peers can be added */
6231                 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
6232                         return -EINVAL;
6233                 /* Can only add if TDLS ... */
6234                 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS))
6235                         return -EOPNOTSUPP;
6236                 /* ... with external setup is supported */
6237                 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP))
6238                         return -EOPNOTSUPP;
6239                 /*
6240                  * Older wpa_supplicant versions always mark the TDLS peer
6241                  * as authorized, but it shouldn't yet be.
6242                  */
6243                 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_AUTHORIZED);
6244                 break;
6245         default:
6246                 return -EOPNOTSUPP;
6247         }
6248
6249         /* be aware of params.vlan when changing code here */
6250
6251         err = rdev_add_station(rdev, dev, mac_addr, &params);
6252
6253         if (params.vlan)
6254                 dev_put(params.vlan);
6255         return err;
6256 }
6257
6258 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
6259 {
6260         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6261         struct net_device *dev = info->user_ptr[1];
6262         struct station_del_parameters params;
6263
6264         memset(&params, 0, sizeof(params));
6265
6266         if (info->attrs[NL80211_ATTR_MAC])
6267                 params.mac = nla_data(info->attrs[NL80211_ATTR_MAC]);
6268
6269         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
6270             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
6271             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
6272             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
6273                 return -EINVAL;
6274
6275         if (!rdev->ops->del_station)
6276                 return -EOPNOTSUPP;
6277
6278         if (info->attrs[NL80211_ATTR_MGMT_SUBTYPE]) {
6279                 params.subtype =
6280                         nla_get_u8(info->attrs[NL80211_ATTR_MGMT_SUBTYPE]);
6281                 if (params.subtype != IEEE80211_STYPE_DISASSOC >> 4 &&
6282                     params.subtype != IEEE80211_STYPE_DEAUTH >> 4)
6283                         return -EINVAL;
6284         } else {
6285                 /* Default to Deauthentication frame */
6286                 params.subtype = IEEE80211_STYPE_DEAUTH >> 4;
6287         }
6288
6289         if (info->attrs[NL80211_ATTR_REASON_CODE]) {
6290                 params.reason_code =
6291                         nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
6292                 if (params.reason_code == 0)
6293                         return -EINVAL; /* 0 is reserved */
6294         } else {
6295                 /* Default to reason code 2 */
6296                 params.reason_code = WLAN_REASON_PREV_AUTH_NOT_VALID;
6297         }
6298
6299         return rdev_del_station(rdev, dev, &params);
6300 }
6301
6302 static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq,
6303                                 int flags, struct net_device *dev,
6304                                 u8 *dst, u8 *next_hop,
6305                                 struct mpath_info *pinfo)
6306 {
6307         void *hdr;
6308         struct nlattr *pinfoattr;
6309
6310         hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_MPATH);
6311         if (!hdr)
6312                 return -1;
6313
6314         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
6315             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
6316             nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) ||
6317             nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation))
6318                 goto nla_put_failure;
6319
6320         pinfoattr = nla_nest_start_noflag(msg, NL80211_ATTR_MPATH_INFO);
6321         if (!pinfoattr)
6322                 goto nla_put_failure;
6323         if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) &&
6324             nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
6325                         pinfo->frame_qlen))
6326                 goto nla_put_failure;
6327         if (((pinfo->filled & MPATH_INFO_SN) &&
6328              nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) ||
6329             ((pinfo->filled & MPATH_INFO_METRIC) &&
6330              nla_put_u32(msg, NL80211_MPATH_INFO_METRIC,
6331                          pinfo->metric)) ||
6332             ((pinfo->filled & MPATH_INFO_EXPTIME) &&
6333              nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME,
6334                          pinfo->exptime)) ||
6335             ((pinfo->filled & MPATH_INFO_FLAGS) &&
6336              nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS,
6337                         pinfo->flags)) ||
6338             ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) &&
6339              nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
6340                          pinfo->discovery_timeout)) ||
6341             ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) &&
6342              nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
6343                         pinfo->discovery_retries)) ||
6344             ((pinfo->filled & MPATH_INFO_HOP_COUNT) &&
6345              nla_put_u8(msg, NL80211_MPATH_INFO_HOP_COUNT,
6346                         pinfo->hop_count)) ||
6347             ((pinfo->filled & MPATH_INFO_PATH_CHANGE) &&
6348              nla_put_u32(msg, NL80211_MPATH_INFO_PATH_CHANGE,
6349                          pinfo->path_change_count)))
6350                 goto nla_put_failure;
6351
6352         nla_nest_end(msg, pinfoattr);
6353
6354         genlmsg_end(msg, hdr);
6355         return 0;
6356
6357  nla_put_failure:
6358         genlmsg_cancel(msg, hdr);
6359         return -EMSGSIZE;
6360 }
6361
6362 static int nl80211_dump_mpath(struct sk_buff *skb,
6363                               struct netlink_callback *cb)
6364 {
6365         struct mpath_info pinfo;
6366         struct cfg80211_registered_device *rdev;
6367         struct wireless_dev *wdev;
6368         u8 dst[ETH_ALEN];
6369         u8 next_hop[ETH_ALEN];
6370         int path_idx = cb->args[2];
6371         int err;
6372
6373         rtnl_lock();
6374         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
6375         if (err)
6376                 goto out_err;
6377
6378         if (!rdev->ops->dump_mpath) {
6379                 err = -EOPNOTSUPP;
6380                 goto out_err;
6381         }
6382
6383         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
6384                 err = -EOPNOTSUPP;
6385                 goto out_err;
6386         }
6387
6388         while (1) {
6389                 err = rdev_dump_mpath(rdev, wdev->netdev, path_idx, dst,
6390                                       next_hop, &pinfo);
6391                 if (err == -ENOENT)
6392                         break;
6393                 if (err)
6394                         goto out_err;
6395
6396                 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
6397                                        cb->nlh->nlmsg_seq, NLM_F_MULTI,
6398                                        wdev->netdev, dst, next_hop,
6399                                        &pinfo) < 0)
6400                         goto out;
6401
6402                 path_idx++;
6403         }
6404
6405  out:
6406         cb->args[2] = path_idx;
6407         err = skb->len;
6408  out_err:
6409         rtnl_unlock();
6410         return err;
6411 }
6412
6413 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
6414 {
6415         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6416         int err;
6417         struct net_device *dev = info->user_ptr[1];
6418         struct mpath_info pinfo;
6419         struct sk_buff *msg;
6420         u8 *dst = NULL;
6421         u8 next_hop[ETH_ALEN];
6422
6423         memset(&pinfo, 0, sizeof(pinfo));
6424
6425         if (!info->attrs[NL80211_ATTR_MAC])
6426                 return -EINVAL;
6427
6428         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
6429
6430         if (!rdev->ops->get_mpath)
6431                 return -EOPNOTSUPP;
6432
6433         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6434                 return -EOPNOTSUPP;
6435
6436         err = rdev_get_mpath(rdev, dev, dst, next_hop, &pinfo);
6437         if (err)
6438                 return err;
6439
6440         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6441         if (!msg)
6442                 return -ENOMEM;
6443
6444         if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
6445                                  dev, dst, next_hop, &pinfo) < 0) {
6446                 nlmsg_free(msg);
6447                 return -ENOBUFS;
6448         }
6449
6450         return genlmsg_reply(msg, info);
6451 }
6452
6453 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
6454 {
6455         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6456         struct net_device *dev = info->user_ptr[1];
6457         u8 *dst = NULL;
6458         u8 *next_hop = NULL;
6459
6460         if (!info->attrs[NL80211_ATTR_MAC])
6461                 return -EINVAL;
6462
6463         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
6464                 return -EINVAL;
6465
6466         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
6467         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
6468
6469         if (!rdev->ops->change_mpath)
6470                 return -EOPNOTSUPP;
6471
6472         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6473                 return -EOPNOTSUPP;
6474
6475         return rdev_change_mpath(rdev, dev, dst, next_hop);
6476 }
6477
6478 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
6479 {
6480         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6481         struct net_device *dev = info->user_ptr[1];
6482         u8 *dst = NULL;
6483         u8 *next_hop = NULL;
6484
6485         if (!info->attrs[NL80211_ATTR_MAC])
6486                 return -EINVAL;
6487
6488         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
6489                 return -EINVAL;
6490
6491         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
6492         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
6493
6494         if (!rdev->ops->add_mpath)
6495                 return -EOPNOTSUPP;
6496
6497         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6498                 return -EOPNOTSUPP;
6499
6500         return rdev_add_mpath(rdev, dev, dst, next_hop);
6501 }
6502
6503 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
6504 {
6505         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6506         struct net_device *dev = info->user_ptr[1];
6507         u8 *dst = NULL;
6508
6509         if (info->attrs[NL80211_ATTR_MAC])
6510                 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
6511
6512         if (!rdev->ops->del_mpath)
6513                 return -EOPNOTSUPP;
6514
6515         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6516                 return -EOPNOTSUPP;
6517
6518         return rdev_del_mpath(rdev, dev, dst);
6519 }
6520
6521 static int nl80211_get_mpp(struct sk_buff *skb, struct genl_info *info)
6522 {
6523         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6524         int err;
6525         struct net_device *dev = info->user_ptr[1];
6526         struct mpath_info pinfo;
6527         struct sk_buff *msg;
6528         u8 *dst = NULL;
6529         u8 mpp[ETH_ALEN];
6530
6531         memset(&pinfo, 0, sizeof(pinfo));
6532
6533         if (!info->attrs[NL80211_ATTR_MAC])
6534                 return -EINVAL;
6535
6536         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
6537
6538         if (!rdev->ops->get_mpp)
6539                 return -EOPNOTSUPP;
6540
6541         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6542                 return -EOPNOTSUPP;
6543
6544         err = rdev_get_mpp(rdev, dev, dst, mpp, &pinfo);
6545         if (err)
6546                 return err;
6547
6548         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6549         if (!msg)
6550                 return -ENOMEM;
6551
6552         if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
6553                                dev, dst, mpp, &pinfo) < 0) {
6554                 nlmsg_free(msg);
6555                 return -ENOBUFS;
6556         }
6557
6558         return genlmsg_reply(msg, info);
6559 }
6560
6561 static int nl80211_dump_mpp(struct sk_buff *skb,
6562                             struct netlink_callback *cb)
6563 {
6564         struct mpath_info pinfo;
6565         struct cfg80211_registered_device *rdev;
6566         struct wireless_dev *wdev;
6567         u8 dst[ETH_ALEN];
6568         u8 mpp[ETH_ALEN];
6569         int path_idx = cb->args[2];
6570         int err;
6571
6572         rtnl_lock();
6573         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
6574         if (err)
6575                 goto out_err;
6576
6577         if (!rdev->ops->dump_mpp) {
6578                 err = -EOPNOTSUPP;
6579                 goto out_err;
6580         }
6581
6582         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
6583                 err = -EOPNOTSUPP;
6584                 goto out_err;
6585         }
6586
6587         while (1) {
6588                 err = rdev_dump_mpp(rdev, wdev->netdev, path_idx, dst,
6589                                     mpp, &pinfo);
6590                 if (err == -ENOENT)
6591                         break;
6592                 if (err)
6593                         goto out_err;
6594
6595                 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
6596                                        cb->nlh->nlmsg_seq, NLM_F_MULTI,
6597                                        wdev->netdev, dst, mpp,
6598                                        &pinfo) < 0)
6599                         goto out;
6600
6601                 path_idx++;
6602         }
6603
6604  out:
6605         cb->args[2] = path_idx;
6606         err = skb->len;
6607  out_err:
6608         rtnl_unlock();
6609         return err;
6610 }
6611
6612 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
6613 {
6614         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6615         struct net_device *dev = info->user_ptr[1];
6616         struct wireless_dev *wdev = dev->ieee80211_ptr;
6617         struct bss_parameters params;
6618         int err;
6619
6620         memset(&params, 0, sizeof(params));
6621         /* default to not changing parameters */
6622         params.use_cts_prot = -1;
6623         params.use_short_preamble = -1;
6624         params.use_short_slot_time = -1;
6625         params.ap_isolate = -1;
6626         params.ht_opmode = -1;
6627         params.p2p_ctwindow = -1;
6628         params.p2p_opp_ps = -1;
6629
6630         if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
6631                 params.use_cts_prot =
6632                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
6633         if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
6634                 params.use_short_preamble =
6635                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
6636         if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
6637                 params.use_short_slot_time =
6638                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
6639         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
6640                 params.basic_rates =
6641                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
6642                 params.basic_rates_len =
6643                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
6644         }
6645         if (info->attrs[NL80211_ATTR_AP_ISOLATE])
6646                 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
6647         if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
6648                 params.ht_opmode =
6649                         nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
6650
6651         if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
6652                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
6653                         return -EINVAL;
6654                 params.p2p_ctwindow =
6655                         nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
6656                 if (params.p2p_ctwindow != 0 &&
6657                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
6658                         return -EINVAL;
6659         }
6660
6661         if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
6662                 u8 tmp;
6663
6664                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
6665                         return -EINVAL;
6666                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
6667                 params.p2p_opp_ps = tmp;
6668                 if (params.p2p_opp_ps &&
6669                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
6670                         return -EINVAL;
6671         }
6672
6673         if (!rdev->ops->change_bss)
6674                 return -EOPNOTSUPP;
6675
6676         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
6677             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
6678                 return -EOPNOTSUPP;
6679
6680         wdev_lock(wdev);
6681         err = rdev_change_bss(rdev, dev, &params);
6682         wdev_unlock(wdev);
6683
6684         return err;
6685 }
6686
6687 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
6688 {
6689         char *data = NULL;
6690         bool is_indoor;
6691         enum nl80211_user_reg_hint_type user_reg_hint_type;
6692         u32 owner_nlportid;
6693
6694         /*
6695          * You should only get this when cfg80211 hasn't yet initialized
6696          * completely when built-in to the kernel right between the time
6697          * window between nl80211_init() and regulatory_init(), if that is
6698          * even possible.
6699          */
6700         if (unlikely(!rcu_access_pointer(cfg80211_regdomain)))
6701                 return -EINPROGRESS;
6702
6703         if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE])
6704                 user_reg_hint_type =
6705                   nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]);
6706         else
6707                 user_reg_hint_type = NL80211_USER_REG_HINT_USER;
6708
6709         switch (user_reg_hint_type) {
6710         case NL80211_USER_REG_HINT_USER:
6711         case NL80211_USER_REG_HINT_CELL_BASE:
6712                 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
6713                         return -EINVAL;
6714
6715                 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
6716                 return regulatory_hint_user(data, user_reg_hint_type);
6717         case NL80211_USER_REG_HINT_INDOOR:
6718                 if (info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
6719                         owner_nlportid = info->snd_portid;
6720                         is_indoor = !!info->attrs[NL80211_ATTR_REG_INDOOR];
6721                 } else {
6722                         owner_nlportid = 0;
6723                         is_indoor = true;
6724                 }
6725
6726                 return regulatory_hint_indoor(is_indoor, owner_nlportid);
6727         default:
6728                 return -EINVAL;
6729         }
6730 }
6731
6732 static int nl80211_reload_regdb(struct sk_buff *skb, struct genl_info *info)
6733 {
6734         return reg_reload_regdb();
6735 }
6736
6737 static int nl80211_get_mesh_config(struct sk_buff *skb,
6738                                    struct genl_info *info)
6739 {
6740         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6741         struct net_device *dev = info->user_ptr[1];
6742         struct wireless_dev *wdev = dev->ieee80211_ptr;
6743         struct mesh_config cur_params;
6744         int err = 0;
6745         void *hdr;
6746         struct nlattr *pinfoattr;
6747         struct sk_buff *msg;
6748
6749         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
6750                 return -EOPNOTSUPP;
6751
6752         if (!rdev->ops->get_mesh_config)
6753                 return -EOPNOTSUPP;
6754
6755         wdev_lock(wdev);
6756         /* If not connected, get default parameters */
6757         if (!wdev->mesh_id_len)
6758                 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
6759         else
6760                 err = rdev_get_mesh_config(rdev, dev, &cur_params);
6761         wdev_unlock(wdev);
6762
6763         if (err)
6764                 return err;
6765
6766         /* Draw up a netlink message to send back */
6767         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6768         if (!msg)
6769                 return -ENOMEM;
6770         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
6771                              NL80211_CMD_GET_MESH_CONFIG);
6772         if (!hdr)
6773                 goto out;
6774         pinfoattr = nla_nest_start_noflag(msg, NL80211_ATTR_MESH_CONFIG);
6775         if (!pinfoattr)
6776                 goto nla_put_failure;
6777         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
6778             nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
6779                         cur_params.dot11MeshRetryTimeout) ||
6780             nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
6781                         cur_params.dot11MeshConfirmTimeout) ||
6782             nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
6783                         cur_params.dot11MeshHoldingTimeout) ||
6784             nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
6785                         cur_params.dot11MeshMaxPeerLinks) ||
6786             nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES,
6787                        cur_params.dot11MeshMaxRetries) ||
6788             nla_put_u8(msg, NL80211_MESHCONF_TTL,
6789                        cur_params.dot11MeshTTL) ||
6790             nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL,
6791                        cur_params.element_ttl) ||
6792             nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
6793                        cur_params.auto_open_plinks) ||
6794             nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
6795                         cur_params.dot11MeshNbrOffsetMaxNeighbor) ||
6796             nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
6797                        cur_params.dot11MeshHWMPmaxPREQretries) ||
6798             nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
6799                         cur_params.path_refresh_time) ||
6800             nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
6801                         cur_params.min_discovery_timeout) ||
6802             nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
6803                         cur_params.dot11MeshHWMPactivePathTimeout) ||
6804             nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
6805                         cur_params.dot11MeshHWMPpreqMinInterval) ||
6806             nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
6807                         cur_params.dot11MeshHWMPperrMinInterval) ||
6808             nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
6809                         cur_params.dot11MeshHWMPnetDiameterTraversalTime) ||
6810             nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
6811                        cur_params.dot11MeshHWMPRootMode) ||
6812             nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
6813                         cur_params.dot11MeshHWMPRannInterval) ||
6814             nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
6815                        cur_params.dot11MeshGateAnnouncementProtocol) ||
6816             nla_put_u8(msg, NL80211_MESHCONF_FORWARDING,
6817                        cur_params.dot11MeshForwarding) ||
6818             nla_put_s32(msg, NL80211_MESHCONF_RSSI_THRESHOLD,
6819                         cur_params.rssi_threshold) ||
6820             nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE,
6821                         cur_params.ht_opmode) ||
6822             nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
6823                         cur_params.dot11MeshHWMPactivePathToRootTimeout) ||
6824             nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
6825                         cur_params.dot11MeshHWMProotInterval) ||
6826             nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
6827                         cur_params.dot11MeshHWMPconfirmationInterval) ||
6828             nla_put_u32(msg, NL80211_MESHCONF_POWER_MODE,
6829                         cur_params.power_mode) ||
6830             nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW,
6831                         cur_params.dot11MeshAwakeWindowDuration) ||
6832             nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT,
6833                         cur_params.plink_timeout) ||
6834             nla_put_u8(msg, NL80211_MESHCONF_CONNECTED_TO_GATE,
6835                        cur_params.dot11MeshConnectedToMeshGate))
6836                 goto nla_put_failure;
6837         nla_nest_end(msg, pinfoattr);
6838         genlmsg_end(msg, hdr);
6839         return genlmsg_reply(msg, info);
6840
6841  nla_put_failure:
6842  out:
6843         nlmsg_free(msg);
6844         return -ENOBUFS;
6845 }
6846
6847 static const struct nla_policy
6848 nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
6849         [NL80211_MESHCONF_RETRY_TIMEOUT] =
6850                 NLA_POLICY_RANGE(NLA_U16, 1, 255),
6851         [NL80211_MESHCONF_CONFIRM_TIMEOUT] =
6852                 NLA_POLICY_RANGE(NLA_U16, 1, 255),
6853         [NL80211_MESHCONF_HOLDING_TIMEOUT] =
6854                 NLA_POLICY_RANGE(NLA_U16, 1, 255),
6855         [NL80211_MESHCONF_MAX_PEER_LINKS] =
6856                 NLA_POLICY_RANGE(NLA_U16, 0, 255),
6857         [NL80211_MESHCONF_MAX_RETRIES] = NLA_POLICY_MAX(NLA_U8, 16),
6858         [NL80211_MESHCONF_TTL] = NLA_POLICY_MIN(NLA_U8, 1),
6859         [NL80211_MESHCONF_ELEMENT_TTL] = NLA_POLICY_MIN(NLA_U8, 1),
6860         [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = NLA_POLICY_MAX(NLA_U8, 1),
6861         [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] =
6862                 NLA_POLICY_RANGE(NLA_U32, 1, 255),
6863         [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
6864         [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
6865         [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = NLA_POLICY_MIN(NLA_U16, 1),
6866         [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
6867         [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] =
6868                 NLA_POLICY_MIN(NLA_U16, 1),
6869         [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] =
6870                 NLA_POLICY_MIN(NLA_U16, 1),
6871         [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] =
6872                 NLA_POLICY_MIN(NLA_U16, 1),
6873         [NL80211_MESHCONF_HWMP_ROOTMODE] = NLA_POLICY_MAX(NLA_U8, 4),
6874         [NL80211_MESHCONF_HWMP_RANN_INTERVAL] =
6875                 NLA_POLICY_MIN(NLA_U16, 1),
6876         [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = NLA_POLICY_MAX(NLA_U8, 1),
6877         [NL80211_MESHCONF_FORWARDING] = NLA_POLICY_MAX(NLA_U8, 1),
6878         [NL80211_MESHCONF_RSSI_THRESHOLD] =
6879                 NLA_POLICY_RANGE(NLA_S32, -255, 0),
6880         [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 },
6881         [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 },
6882         [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] =
6883                 NLA_POLICY_MIN(NLA_U16, 1),
6884         [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] =
6885                 NLA_POLICY_MIN(NLA_U16, 1),
6886         [NL80211_MESHCONF_POWER_MODE] =
6887                 NLA_POLICY_RANGE(NLA_U32,
6888                                  NL80211_MESH_POWER_ACTIVE,
6889                                  NL80211_MESH_POWER_MAX),
6890         [NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 },
6891         [NL80211_MESHCONF_PLINK_TIMEOUT] = { .type = NLA_U32 },
6892         [NL80211_MESHCONF_CONNECTED_TO_GATE] = NLA_POLICY_RANGE(NLA_U8, 0, 1),
6893 };
6894
6895 static const struct nla_policy
6896         nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
6897         [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 },
6898         [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
6899         [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
6900         [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
6901         [NL80211_MESH_SETUP_AUTH_PROTOCOL] = { .type = NLA_U8 },
6902         [NL80211_MESH_SETUP_USERSPACE_MPM] = { .type = NLA_FLAG },
6903         [NL80211_MESH_SETUP_IE] =
6904                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
6905                                        IEEE80211_MAX_DATA_LEN),
6906         [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
6907 };
6908
6909 static int nl80211_parse_mesh_config(struct genl_info *info,
6910                                      struct mesh_config *cfg,
6911                                      u32 *mask_out)
6912 {
6913         struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
6914         u32 mask = 0;
6915         u16 ht_opmode;
6916
6917 #define FILL_IN_MESH_PARAM_IF_SET(tb, cfg, param, mask, attr, fn)       \
6918 do {                                                                    \
6919         if (tb[attr]) {                                                 \
6920                 cfg->param = fn(tb[attr]);                              \
6921                 mask |= BIT((attr) - 1);                                \
6922         }                                                               \
6923 } while (0)
6924
6925         if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
6926                 return -EINVAL;
6927         if (nla_parse_nested_deprecated(tb, NL80211_MESHCONF_ATTR_MAX, info->attrs[NL80211_ATTR_MESH_CONFIG], nl80211_meshconf_params_policy, info->extack))
6928                 return -EINVAL;
6929
6930         /* This makes sure that there aren't more than 32 mesh config
6931          * parameters (otherwise our bitfield scheme would not work.) */
6932         BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
6933
6934         /* Fill in the params struct */
6935         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, mask,
6936                                   NL80211_MESHCONF_RETRY_TIMEOUT, nla_get_u16);
6937         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, mask,
6938                                   NL80211_MESHCONF_CONFIRM_TIMEOUT,
6939                                   nla_get_u16);
6940         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, mask,
6941                                   NL80211_MESHCONF_HOLDING_TIMEOUT,
6942                                   nla_get_u16);
6943         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, mask,
6944                                   NL80211_MESHCONF_MAX_PEER_LINKS,
6945                                   nla_get_u16);
6946         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, mask,
6947                                   NL80211_MESHCONF_MAX_RETRIES, nla_get_u8);
6948         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, mask,
6949                                   NL80211_MESHCONF_TTL, nla_get_u8);
6950         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl, mask,
6951                                   NL80211_MESHCONF_ELEMENT_TTL, nla_get_u8);
6952         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, mask,
6953                                   NL80211_MESHCONF_AUTO_OPEN_PLINKS,
6954                                   nla_get_u8);
6955         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor,
6956                                   mask,
6957                                   NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
6958                                   nla_get_u32);
6959         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, mask,
6960                                   NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
6961                                   nla_get_u8);
6962         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, mask,
6963                                   NL80211_MESHCONF_PATH_REFRESH_TIME,
6964                                   nla_get_u32);
6965         if (mask & BIT(NL80211_MESHCONF_PATH_REFRESH_TIME) &&
6966             (cfg->path_refresh_time < 1 || cfg->path_refresh_time > 65535))
6967                 return -EINVAL;
6968         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, mask,
6969                                   NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
6970                                   nla_get_u16);
6971         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
6972                                   mask,
6973                                   NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
6974                                   nla_get_u32);
6975         if (mask & BIT(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT) &&
6976             (cfg->dot11MeshHWMPactivePathTimeout < 1 ||
6977              cfg->dot11MeshHWMPactivePathTimeout > 65535))
6978                 return -EINVAL;
6979         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval, mask,
6980                                   NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
6981                                   nla_get_u16);
6982         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval, mask,
6983                                   NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
6984                                   nla_get_u16);
6985         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
6986                                   dot11MeshHWMPnetDiameterTraversalTime, mask,
6987                                   NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
6988                                   nla_get_u16);
6989         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, mask,
6990                                   NL80211_MESHCONF_HWMP_ROOTMODE, nla_get_u8);
6991         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, mask,
6992                                   NL80211_MESHCONF_HWMP_RANN_INTERVAL,
6993                                   nla_get_u16);
6994         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshGateAnnouncementProtocol,
6995                                   mask, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
6996                                   nla_get_u8);
6997         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding, mask,
6998                                   NL80211_MESHCONF_FORWARDING, nla_get_u8);
6999         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold, mask,
7000                                   NL80211_MESHCONF_RSSI_THRESHOLD,
7001                                   nla_get_s32);
7002         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConnectedToMeshGate, mask,
7003                                   NL80211_MESHCONF_CONNECTED_TO_GATE,
7004                                   nla_get_u8);
7005         /*
7006          * Check HT operation mode based on
7007          * IEEE 802.11-2016 9.4.2.57 HT Operation element.
7008          */
7009         if (tb[NL80211_MESHCONF_HT_OPMODE]) {
7010                 ht_opmode = nla_get_u16(tb[NL80211_MESHCONF_HT_OPMODE]);
7011
7012                 if (ht_opmode & ~(IEEE80211_HT_OP_MODE_PROTECTION |
7013                                   IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT |
7014                                   IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT))
7015                         return -EINVAL;
7016
7017                 /* NON_HT_STA bit is reserved, but some programs set it */
7018                 ht_opmode &= ~IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT;
7019
7020                 cfg->ht_opmode = ht_opmode;
7021                 mask |= (1 << (NL80211_MESHCONF_HT_OPMODE - 1));
7022         }
7023         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
7024                                   dot11MeshHWMPactivePathToRootTimeout, mask,
7025                                   NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
7026                                   nla_get_u32);
7027         if (mask & BIT(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT) &&
7028             (cfg->dot11MeshHWMPactivePathToRootTimeout < 1 ||
7029              cfg->dot11MeshHWMPactivePathToRootTimeout > 65535))
7030                 return -EINVAL;
7031         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval, mask,
7032                                   NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
7033                                   nla_get_u16);
7034         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPconfirmationInterval,
7035                                   mask,
7036                                   NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
7037                                   nla_get_u16);
7038         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, power_mode, mask,
7039                                   NL80211_MESHCONF_POWER_MODE, nla_get_u32);
7040         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration, mask,
7041                                   NL80211_MESHCONF_AWAKE_WINDOW, nla_get_u16);
7042         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, plink_timeout, mask,
7043                                   NL80211_MESHCONF_PLINK_TIMEOUT, nla_get_u32);
7044         if (mask_out)
7045                 *mask_out = mask;
7046
7047         return 0;
7048
7049 #undef FILL_IN_MESH_PARAM_IF_SET
7050 }
7051
7052 static int nl80211_parse_mesh_setup(struct genl_info *info,
7053                                      struct mesh_setup *setup)
7054 {
7055         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7056         struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
7057
7058         if (!info->attrs[NL80211_ATTR_MESH_SETUP])
7059                 return -EINVAL;
7060         if (nla_parse_nested_deprecated(tb, NL80211_MESH_SETUP_ATTR_MAX, info->attrs[NL80211_ATTR_MESH_SETUP], nl80211_mesh_setup_params_policy, info->extack))
7061                 return -EINVAL;
7062
7063         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])
7064                 setup->sync_method =
7065                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ?
7066                  IEEE80211_SYNC_METHOD_VENDOR :
7067                  IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET;
7068
7069         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
7070                 setup->path_sel_proto =
7071                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
7072                  IEEE80211_PATH_PROTOCOL_VENDOR :
7073                  IEEE80211_PATH_PROTOCOL_HWMP;
7074
7075         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
7076                 setup->path_metric =
7077                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
7078                  IEEE80211_PATH_METRIC_VENDOR :
7079                  IEEE80211_PATH_METRIC_AIRTIME;
7080
7081         if (tb[NL80211_MESH_SETUP_IE]) {
7082                 struct nlattr *ieattr =
7083                         tb[NL80211_MESH_SETUP_IE];
7084                 setup->ie = nla_data(ieattr);
7085                 setup->ie_len = nla_len(ieattr);
7086         }
7087         if (tb[NL80211_MESH_SETUP_USERSPACE_MPM] &&
7088             !(rdev->wiphy.features & NL80211_FEATURE_USERSPACE_MPM))
7089                 return -EINVAL;
7090         setup->user_mpm = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_MPM]);
7091         setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
7092         setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
7093         if (setup->is_secure)
7094                 setup->user_mpm = true;
7095
7096         if (tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]) {
7097                 if (!setup->user_mpm)
7098                         return -EINVAL;
7099                 setup->auth_id =
7100                         nla_get_u8(tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]);
7101         }
7102
7103         return 0;
7104 }
7105
7106 static int nl80211_update_mesh_config(struct sk_buff *skb,
7107                                       struct genl_info *info)
7108 {
7109         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7110         struct net_device *dev = info->user_ptr[1];
7111         struct wireless_dev *wdev = dev->ieee80211_ptr;
7112         struct mesh_config cfg;
7113         u32 mask;
7114         int err;
7115
7116         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
7117                 return -EOPNOTSUPP;
7118
7119         if (!rdev->ops->update_mesh_config)
7120                 return -EOPNOTSUPP;
7121
7122         err = nl80211_parse_mesh_config(info, &cfg, &mask);
7123         if (err)
7124                 return err;
7125
7126         wdev_lock(wdev);
7127         if (!wdev->mesh_id_len)
7128                 err = -ENOLINK;
7129
7130         if (!err)
7131                 err = rdev_update_mesh_config(rdev, dev, mask, &cfg);
7132
7133         wdev_unlock(wdev);
7134
7135         return err;
7136 }
7137
7138 static int nl80211_put_regdom(const struct ieee80211_regdomain *regdom,
7139                               struct sk_buff *msg)
7140 {
7141         struct nlattr *nl_reg_rules;
7142         unsigned int i;
7143
7144         if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, regdom->alpha2) ||
7145             (regdom->dfs_region &&
7146              nla_put_u8(msg, NL80211_ATTR_DFS_REGION, regdom->dfs_region)))
7147                 goto nla_put_failure;
7148
7149         nl_reg_rules = nla_nest_start_noflag(msg, NL80211_ATTR_REG_RULES);
7150         if (!nl_reg_rules)
7151                 goto nla_put_failure;
7152
7153         for (i = 0; i < regdom->n_reg_rules; i++) {
7154                 struct nlattr *nl_reg_rule;
7155                 const struct ieee80211_reg_rule *reg_rule;
7156                 const struct ieee80211_freq_range *freq_range;
7157                 const struct ieee80211_power_rule *power_rule;
7158                 unsigned int max_bandwidth_khz;
7159
7160                 reg_rule = &regdom->reg_rules[i];
7161                 freq_range = &reg_rule->freq_range;
7162                 power_rule = &reg_rule->power_rule;
7163
7164                 nl_reg_rule = nla_nest_start_noflag(msg, i);
7165                 if (!nl_reg_rule)
7166                         goto nla_put_failure;
7167
7168                 max_bandwidth_khz = freq_range->max_bandwidth_khz;
7169                 if (!max_bandwidth_khz)
7170                         max_bandwidth_khz = reg_get_max_bandwidth(regdom,
7171                                                                   reg_rule);
7172
7173                 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS,
7174                                 reg_rule->flags) ||
7175                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START,
7176                                 freq_range->start_freq_khz) ||
7177                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END,
7178                                 freq_range->end_freq_khz) ||
7179                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
7180                                 max_bandwidth_khz) ||
7181                     nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
7182                                 power_rule->max_antenna_gain) ||
7183                     nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
7184                                 power_rule->max_eirp) ||
7185                     nla_put_u32(msg, NL80211_ATTR_DFS_CAC_TIME,
7186                                 reg_rule->dfs_cac_ms))
7187                         goto nla_put_failure;
7188
7189                 nla_nest_end(msg, nl_reg_rule);
7190         }
7191
7192         nla_nest_end(msg, nl_reg_rules);
7193         return 0;
7194
7195 nla_put_failure:
7196         return -EMSGSIZE;
7197 }
7198
7199 static int nl80211_get_reg_do(struct sk_buff *skb, struct genl_info *info)
7200 {
7201         const struct ieee80211_regdomain *regdom = NULL;
7202         struct cfg80211_registered_device *rdev;
7203         struct wiphy *wiphy = NULL;
7204         struct sk_buff *msg;
7205         void *hdr;
7206
7207         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7208         if (!msg)
7209                 return -ENOBUFS;
7210
7211         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7212                              NL80211_CMD_GET_REG);
7213         if (!hdr)
7214                 goto put_failure;
7215
7216         if (info->attrs[NL80211_ATTR_WIPHY]) {
7217                 bool self_managed;
7218
7219                 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
7220                 if (IS_ERR(rdev)) {
7221                         nlmsg_free(msg);
7222                         return PTR_ERR(rdev);
7223                 }
7224
7225                 wiphy = &rdev->wiphy;
7226                 self_managed = wiphy->regulatory_flags &
7227                                REGULATORY_WIPHY_SELF_MANAGED;
7228                 regdom = get_wiphy_regdom(wiphy);
7229
7230                 /* a self-managed-reg device must have a private regdom */
7231                 if (WARN_ON(!regdom && self_managed)) {
7232                         nlmsg_free(msg);
7233                         return -EINVAL;
7234                 }
7235
7236                 if (regdom &&
7237                     nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
7238                         goto nla_put_failure;
7239         }
7240
7241         if (!wiphy && reg_last_request_cell_base() &&
7242             nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
7243                         NL80211_USER_REG_HINT_CELL_BASE))
7244                 goto nla_put_failure;
7245
7246         rcu_read_lock();
7247
7248         if (!regdom)
7249                 regdom = rcu_dereference(cfg80211_regdomain);
7250
7251         if (nl80211_put_regdom(regdom, msg))
7252                 goto nla_put_failure_rcu;
7253
7254         rcu_read_unlock();
7255
7256         genlmsg_end(msg, hdr);
7257         return genlmsg_reply(msg, info);
7258
7259 nla_put_failure_rcu:
7260         rcu_read_unlock();
7261 nla_put_failure:
7262 put_failure:
7263         nlmsg_free(msg);
7264         return -EMSGSIZE;
7265 }
7266
7267 static int nl80211_send_regdom(struct sk_buff *msg, struct netlink_callback *cb,
7268                                u32 seq, int flags, struct wiphy *wiphy,
7269                                const struct ieee80211_regdomain *regdom)
7270 {
7271         void *hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
7272                                    NL80211_CMD_GET_REG);
7273
7274         if (!hdr)
7275                 return -1;
7276
7277         genl_dump_check_consistent(cb, hdr);
7278
7279         if (nl80211_put_regdom(regdom, msg))
7280                 goto nla_put_failure;
7281
7282         if (!wiphy && reg_last_request_cell_base() &&
7283             nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
7284                         NL80211_USER_REG_HINT_CELL_BASE))
7285                 goto nla_put_failure;
7286
7287         if (wiphy &&
7288             nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
7289                 goto nla_put_failure;
7290
7291         if (wiphy && wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
7292             nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
7293                 goto nla_put_failure;
7294
7295         genlmsg_end(msg, hdr);
7296         return 0;
7297
7298 nla_put_failure:
7299         genlmsg_cancel(msg, hdr);
7300         return -EMSGSIZE;
7301 }
7302
7303 static int nl80211_get_reg_dump(struct sk_buff *skb,
7304                                 struct netlink_callback *cb)
7305 {
7306         const struct ieee80211_regdomain *regdom = NULL;
7307         struct cfg80211_registered_device *rdev;
7308         int err, reg_idx, start = cb->args[2];
7309
7310         rtnl_lock();
7311
7312         if (cfg80211_regdomain && start == 0) {
7313                 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
7314                                           NLM_F_MULTI, NULL,
7315                                           rtnl_dereference(cfg80211_regdomain));
7316                 if (err < 0)
7317                         goto out_err;
7318         }
7319
7320         /* the global regdom is idx 0 */
7321         reg_idx = 1;
7322         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
7323                 regdom = get_wiphy_regdom(&rdev->wiphy);
7324                 if (!regdom)
7325                         continue;
7326
7327                 if (++reg_idx <= start)
7328                         continue;
7329
7330                 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
7331                                           NLM_F_MULTI, &rdev->wiphy, regdom);
7332                 if (err < 0) {
7333                         reg_idx--;
7334                         break;
7335                 }
7336         }
7337
7338         cb->args[2] = reg_idx;
7339         err = skb->len;
7340 out_err:
7341         rtnl_unlock();
7342         return err;
7343 }
7344
7345 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
7346 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
7347         [NL80211_ATTR_REG_RULE_FLAGS]           = { .type = NLA_U32 },
7348         [NL80211_ATTR_FREQ_RANGE_START]         = { .type = NLA_U32 },
7349         [NL80211_ATTR_FREQ_RANGE_END]           = { .type = NLA_U32 },
7350         [NL80211_ATTR_FREQ_RANGE_MAX_BW]        = { .type = NLA_U32 },
7351         [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]  = { .type = NLA_U32 },
7352         [NL80211_ATTR_POWER_RULE_MAX_EIRP]      = { .type = NLA_U32 },
7353         [NL80211_ATTR_DFS_CAC_TIME]             = { .type = NLA_U32 },
7354 };
7355
7356 static int parse_reg_rule(struct nlattr *tb[],
7357         struct ieee80211_reg_rule *reg_rule)
7358 {
7359         struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
7360         struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
7361
7362         if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
7363                 return -EINVAL;
7364         if (!tb[NL80211_ATTR_FREQ_RANGE_START])
7365                 return -EINVAL;
7366         if (!tb[NL80211_ATTR_FREQ_RANGE_END])
7367                 return -EINVAL;
7368         if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
7369                 return -EINVAL;
7370         if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
7371                 return -EINVAL;
7372
7373         reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
7374
7375         freq_range->start_freq_khz =
7376                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
7377         freq_range->end_freq_khz =
7378                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
7379         freq_range->max_bandwidth_khz =
7380                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
7381
7382         power_rule->max_eirp =
7383                 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
7384
7385         if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
7386                 power_rule->max_antenna_gain =
7387                         nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
7388
7389         if (tb[NL80211_ATTR_DFS_CAC_TIME])
7390                 reg_rule->dfs_cac_ms =
7391                         nla_get_u32(tb[NL80211_ATTR_DFS_CAC_TIME]);
7392
7393         return 0;
7394 }
7395
7396 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
7397 {
7398         struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
7399         struct nlattr *nl_reg_rule;
7400         char *alpha2;
7401         int rem_reg_rules, r;
7402         u32 num_rules = 0, rule_idx = 0;
7403         enum nl80211_dfs_regions dfs_region = NL80211_DFS_UNSET;
7404         struct ieee80211_regdomain *rd;
7405
7406         if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
7407                 return -EINVAL;
7408
7409         if (!info->attrs[NL80211_ATTR_REG_RULES])
7410                 return -EINVAL;
7411
7412         alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
7413
7414         if (info->attrs[NL80211_ATTR_DFS_REGION])
7415                 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]);
7416
7417         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
7418                             rem_reg_rules) {
7419                 num_rules++;
7420                 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
7421                         return -EINVAL;
7422         }
7423
7424         if (!reg_is_valid_request(alpha2))
7425                 return -EINVAL;
7426
7427         rd = kzalloc(struct_size(rd, reg_rules, num_rules), GFP_KERNEL);
7428         if (!rd)
7429                 return -ENOMEM;
7430
7431         rd->n_reg_rules = num_rules;
7432         rd->alpha2[0] = alpha2[0];
7433         rd->alpha2[1] = alpha2[1];
7434
7435         /*
7436          * Disable DFS master mode if the DFS region was
7437          * not supported or known on this kernel.
7438          */
7439         if (reg_supported_dfs_region(dfs_region))
7440                 rd->dfs_region = dfs_region;
7441
7442         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
7443                             rem_reg_rules) {
7444                 r = nla_parse_nested_deprecated(tb, NL80211_REG_RULE_ATTR_MAX,
7445                                                 nl_reg_rule, reg_rule_policy,
7446                                                 info->extack);
7447                 if (r)
7448                         goto bad_reg;
7449                 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
7450                 if (r)
7451                         goto bad_reg;
7452
7453                 rule_idx++;
7454
7455                 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
7456                         r = -EINVAL;
7457                         goto bad_reg;
7458                 }
7459         }
7460
7461         /* set_regdom takes ownership of rd */
7462         return set_regdom(rd, REGD_SOURCE_CRDA);
7463  bad_reg:
7464         kfree(rd);
7465         return r;
7466 }
7467 #endif /* CONFIG_CFG80211_CRDA_SUPPORT */
7468
7469 static int validate_scan_freqs(struct nlattr *freqs)
7470 {
7471         struct nlattr *attr1, *attr2;
7472         int n_channels = 0, tmp1, tmp2;
7473
7474         nla_for_each_nested(attr1, freqs, tmp1)
7475                 if (nla_len(attr1) != sizeof(u32))
7476                         return 0;
7477
7478         nla_for_each_nested(attr1, freqs, tmp1) {
7479                 n_channels++;
7480                 /*
7481                  * Some hardware has a limited channel list for
7482                  * scanning, and it is pretty much nonsensical
7483                  * to scan for a channel twice, so disallow that
7484                  * and don't require drivers to check that the
7485                  * channel list they get isn't longer than what
7486                  * they can scan, as long as they can scan all
7487                  * the channels they registered at once.
7488                  */
7489                 nla_for_each_nested(attr2, freqs, tmp2)
7490                         if (attr1 != attr2 &&
7491                             nla_get_u32(attr1) == nla_get_u32(attr2))
7492                                 return 0;
7493         }
7494
7495         return n_channels;
7496 }
7497
7498 static bool is_band_valid(struct wiphy *wiphy, enum nl80211_band b)
7499 {
7500         return b < NUM_NL80211_BANDS && wiphy->bands[b];
7501 }
7502
7503 static int parse_bss_select(struct nlattr *nla, struct wiphy *wiphy,
7504                             struct cfg80211_bss_selection *bss_select)
7505 {
7506         struct nlattr *attr[NL80211_BSS_SELECT_ATTR_MAX + 1];
7507         struct nlattr *nest;
7508         int err;
7509         bool found = false;
7510         int i;
7511
7512         /* only process one nested attribute */
7513         nest = nla_data(nla);
7514         if (!nla_ok(nest, nla_len(nest)))
7515                 return -EINVAL;
7516
7517         err = nla_parse_nested_deprecated(attr, NL80211_BSS_SELECT_ATTR_MAX,
7518                                           nest, nl80211_bss_select_policy,
7519                                           NULL);
7520         if (err)
7521                 return err;
7522
7523         /* only one attribute may be given */
7524         for (i = 0; i <= NL80211_BSS_SELECT_ATTR_MAX; i++) {
7525                 if (attr[i]) {
7526                         if (found)
7527                                 return -EINVAL;
7528                         found = true;
7529                 }
7530         }
7531
7532         bss_select->behaviour = __NL80211_BSS_SELECT_ATTR_INVALID;
7533
7534         if (attr[NL80211_BSS_SELECT_ATTR_RSSI])
7535                 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI;
7536
7537         if (attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]) {
7538                 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_BAND_PREF;
7539                 bss_select->param.band_pref =
7540                         nla_get_u32(attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]);
7541                 if (!is_band_valid(wiphy, bss_select->param.band_pref))
7542                         return -EINVAL;
7543         }
7544
7545         if (attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]) {
7546                 struct nl80211_bss_select_rssi_adjust *adj_param;
7547
7548                 adj_param = nla_data(attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]);
7549                 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI_ADJUST;
7550                 bss_select->param.adjust.band = adj_param->band;
7551                 bss_select->param.adjust.delta = adj_param->delta;
7552                 if (!is_band_valid(wiphy, bss_select->param.adjust.band))
7553                         return -EINVAL;
7554         }
7555
7556         /* user-space did not provide behaviour attribute */
7557         if (bss_select->behaviour == __NL80211_BSS_SELECT_ATTR_INVALID)
7558                 return -EINVAL;
7559
7560         if (!(wiphy->bss_select_support & BIT(bss_select->behaviour)))
7561                 return -EINVAL;
7562
7563         return 0;
7564 }
7565
7566 int nl80211_parse_random_mac(struct nlattr **attrs,
7567                              u8 *mac_addr, u8 *mac_addr_mask)
7568 {
7569         int i;
7570
7571         if (!attrs[NL80211_ATTR_MAC] && !attrs[NL80211_ATTR_MAC_MASK]) {
7572                 eth_zero_addr(mac_addr);
7573                 eth_zero_addr(mac_addr_mask);
7574                 mac_addr[0] = 0x2;
7575                 mac_addr_mask[0] = 0x3;
7576
7577                 return 0;
7578         }
7579
7580         /* need both or none */
7581         if (!attrs[NL80211_ATTR_MAC] || !attrs[NL80211_ATTR_MAC_MASK])
7582                 return -EINVAL;
7583
7584         memcpy(mac_addr, nla_data(attrs[NL80211_ATTR_MAC]), ETH_ALEN);
7585         memcpy(mac_addr_mask, nla_data(attrs[NL80211_ATTR_MAC_MASK]), ETH_ALEN);
7586
7587         /* don't allow or configure an mcast address */
7588         if (!is_multicast_ether_addr(mac_addr_mask) ||
7589             is_multicast_ether_addr(mac_addr))
7590                 return -EINVAL;
7591
7592         /*
7593          * allow users to pass a MAC address that has bits set outside
7594          * of the mask, but don't bother drivers with having to deal
7595          * with such bits
7596          */
7597         for (i = 0; i < ETH_ALEN; i++)
7598                 mac_addr[i] &= mac_addr_mask[i];
7599
7600         return 0;
7601 }
7602
7603 static bool cfg80211_off_channel_oper_allowed(struct wireless_dev *wdev)
7604 {
7605         ASSERT_WDEV_LOCK(wdev);
7606
7607         if (!cfg80211_beaconing_iface_active(wdev))
7608                 return true;
7609
7610         if (!(wdev->chandef.chan->flags & IEEE80211_CHAN_RADAR))
7611                 return true;
7612
7613         return regulatory_pre_cac_allowed(wdev->wiphy);
7614 }
7615
7616 static bool nl80211_check_scan_feat(struct wiphy *wiphy, u32 flags, u32 flag,
7617                                     enum nl80211_ext_feature_index feat)
7618 {
7619         if (!(flags & flag))
7620                 return true;
7621         if (wiphy_ext_feature_isset(wiphy, feat))
7622                 return true;
7623         return false;
7624 }
7625
7626 static int
7627 nl80211_check_scan_flags(struct wiphy *wiphy, struct wireless_dev *wdev,
7628                          void *request, struct nlattr **attrs,
7629                          bool is_sched_scan)
7630 {
7631         u8 *mac_addr, *mac_addr_mask;
7632         u32 *flags;
7633         enum nl80211_feature_flags randomness_flag;
7634
7635         if (!attrs[NL80211_ATTR_SCAN_FLAGS])
7636                 return 0;
7637
7638         if (is_sched_scan) {
7639                 struct cfg80211_sched_scan_request *req = request;
7640
7641                 randomness_flag = wdev ?
7642                                   NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR :
7643                                   NL80211_FEATURE_ND_RANDOM_MAC_ADDR;
7644                 flags = &req->flags;
7645                 mac_addr = req->mac_addr;
7646                 mac_addr_mask = req->mac_addr_mask;
7647         } else {
7648                 struct cfg80211_scan_request *req = request;
7649
7650                 randomness_flag = NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR;
7651                 flags = &req->flags;
7652                 mac_addr = req->mac_addr;
7653                 mac_addr_mask = req->mac_addr_mask;
7654         }
7655
7656         *flags = nla_get_u32(attrs[NL80211_ATTR_SCAN_FLAGS]);
7657
7658         if (((*flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
7659              !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) ||
7660             !nl80211_check_scan_feat(wiphy, *flags,
7661                                      NL80211_SCAN_FLAG_LOW_SPAN,
7662                                      NL80211_EXT_FEATURE_LOW_SPAN_SCAN) ||
7663             !nl80211_check_scan_feat(wiphy, *flags,
7664                                      NL80211_SCAN_FLAG_LOW_POWER,
7665                                      NL80211_EXT_FEATURE_LOW_POWER_SCAN) ||
7666             !nl80211_check_scan_feat(wiphy, *flags,
7667                                      NL80211_SCAN_FLAG_HIGH_ACCURACY,
7668                                      NL80211_EXT_FEATURE_HIGH_ACCURACY_SCAN) ||
7669             !nl80211_check_scan_feat(wiphy, *flags,
7670                                      NL80211_SCAN_FLAG_FILS_MAX_CHANNEL_TIME,
7671                                      NL80211_EXT_FEATURE_FILS_MAX_CHANNEL_TIME) ||
7672             !nl80211_check_scan_feat(wiphy, *flags,
7673                                      NL80211_SCAN_FLAG_ACCEPT_BCAST_PROBE_RESP,
7674                                      NL80211_EXT_FEATURE_ACCEPT_BCAST_PROBE_RESP) ||
7675             !nl80211_check_scan_feat(wiphy, *flags,
7676                                      NL80211_SCAN_FLAG_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION,
7677                                      NL80211_EXT_FEATURE_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION) ||
7678             !nl80211_check_scan_feat(wiphy, *flags,
7679                                      NL80211_SCAN_FLAG_OCE_PROBE_REQ_HIGH_TX_RATE,
7680                                      NL80211_EXT_FEATURE_OCE_PROBE_REQ_HIGH_TX_RATE) ||
7681             !nl80211_check_scan_feat(wiphy, *flags,
7682                                      NL80211_SCAN_FLAG_RANDOM_SN,
7683                                      NL80211_EXT_FEATURE_SCAN_RANDOM_SN) ||
7684             !nl80211_check_scan_feat(wiphy, *flags,
7685                                      NL80211_SCAN_FLAG_MIN_PREQ_CONTENT,
7686                                      NL80211_EXT_FEATURE_SCAN_MIN_PREQ_CONTENT))
7687                 return -EOPNOTSUPP;
7688
7689         if (*flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
7690                 int err;
7691
7692                 if (!(wiphy->features & randomness_flag) ||
7693                     (wdev && wdev->current_bss))
7694                         return -EOPNOTSUPP;
7695
7696                 err = nl80211_parse_random_mac(attrs, mac_addr, mac_addr_mask);
7697                 if (err)
7698                         return err;
7699         }
7700
7701         return 0;
7702 }
7703
7704 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
7705 {
7706         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7707         struct wireless_dev *wdev = info->user_ptr[1];
7708         struct cfg80211_scan_request *request;
7709         struct nlattr *attr;
7710         struct wiphy *wiphy;
7711         int err, tmp, n_ssids = 0, n_channels, i;
7712         size_t ie_len;
7713
7714         wiphy = &rdev->wiphy;
7715
7716         if (wdev->iftype == NL80211_IFTYPE_NAN)
7717                 return -EOPNOTSUPP;
7718
7719         if (!rdev->ops->scan)
7720                 return -EOPNOTSUPP;
7721
7722         if (rdev->scan_req || rdev->scan_msg) {
7723                 err = -EBUSY;
7724                 goto unlock;
7725         }
7726
7727         if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
7728                 n_channels = validate_scan_freqs(
7729                                 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
7730                 if (!n_channels) {
7731                         err = -EINVAL;
7732                         goto unlock;
7733                 }
7734         } else {
7735                 n_channels = ieee80211_get_num_supported_channels(wiphy);
7736         }
7737
7738         if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
7739                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
7740                         n_ssids++;
7741
7742         if (n_ssids > wiphy->max_scan_ssids) {
7743                 err = -EINVAL;
7744                 goto unlock;
7745         }
7746
7747         if (info->attrs[NL80211_ATTR_IE])
7748                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7749         else
7750                 ie_len = 0;
7751
7752         if (ie_len > wiphy->max_scan_ie_len) {
7753                 err = -EINVAL;
7754                 goto unlock;
7755         }
7756
7757         request = kzalloc(sizeof(*request)
7758                         + sizeof(*request->ssids) * n_ssids
7759                         + sizeof(*request->channels) * n_channels
7760                         + ie_len, GFP_KERNEL);
7761         if (!request) {
7762                 err = -ENOMEM;
7763                 goto unlock;
7764         }
7765
7766         if (n_ssids)
7767                 request->ssids = (void *)&request->channels[n_channels];
7768         request->n_ssids = n_ssids;
7769         if (ie_len) {
7770                 if (n_ssids)
7771                         request->ie = (void *)(request->ssids + n_ssids);
7772                 else
7773                         request->ie = (void *)(request->channels + n_channels);
7774         }
7775
7776         i = 0;
7777         if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
7778                 /* user specified, bail out if channel not found */
7779                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) {
7780                         struct ieee80211_channel *chan;
7781
7782                         chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
7783
7784                         if (!chan) {
7785                                 err = -EINVAL;
7786                                 goto out_free;
7787                         }
7788
7789                         /* ignore disabled channels */
7790                         if (chan->flags & IEEE80211_CHAN_DISABLED)
7791                                 continue;
7792
7793                         request->channels[i] = chan;
7794                         i++;
7795                 }
7796         } else {
7797                 enum nl80211_band band;
7798
7799                 /* all channels */
7800                 for (band = 0; band < NUM_NL80211_BANDS; band++) {
7801                         int j;
7802
7803                         if (!wiphy->bands[band])
7804                                 continue;
7805                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
7806                                 struct ieee80211_channel *chan;
7807
7808                                 chan = &wiphy->bands[band]->channels[j];
7809
7810                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
7811                                         continue;
7812
7813                                 request->channels[i] = chan;
7814                                 i++;
7815                         }
7816                 }
7817         }
7818
7819         if (!i) {
7820                 err = -EINVAL;
7821                 goto out_free;
7822         }
7823
7824         request->n_channels = i;
7825
7826         wdev_lock(wdev);
7827         if (!cfg80211_off_channel_oper_allowed(wdev)) {
7828                 struct ieee80211_channel *chan;
7829
7830                 if (request->n_channels != 1) {
7831                         wdev_unlock(wdev);
7832                         err = -EBUSY;
7833                         goto out_free;
7834                 }
7835
7836                 chan = request->channels[0];
7837                 if (chan->center_freq != wdev->chandef.chan->center_freq) {
7838                         wdev_unlock(wdev);
7839                         err = -EBUSY;
7840                         goto out_free;
7841                 }
7842         }
7843         wdev_unlock(wdev);
7844
7845         i = 0;
7846         if (n_ssids) {
7847                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
7848                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
7849                                 err = -EINVAL;
7850                                 goto out_free;
7851                         }
7852                         request->ssids[i].ssid_len = nla_len(attr);
7853                         memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
7854                         i++;
7855                 }
7856         }
7857
7858         if (info->attrs[NL80211_ATTR_IE]) {
7859                 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7860                 memcpy((void *)request->ie,
7861                        nla_data(info->attrs[NL80211_ATTR_IE]),
7862                        request->ie_len);
7863         }
7864
7865         for (i = 0; i < NUM_NL80211_BANDS; i++)
7866                 if (wiphy->bands[i])
7867                         request->rates[i] =
7868                                 (1 << wiphy->bands[i]->n_bitrates) - 1;
7869
7870         if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
7871                 nla_for_each_nested(attr,
7872                                     info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
7873                                     tmp) {
7874                         enum nl80211_band band = nla_type(attr);
7875
7876                         if (band < 0 || band >= NUM_NL80211_BANDS) {
7877                                 err = -EINVAL;
7878                                 goto out_free;
7879                         }
7880
7881                         if (!wiphy->bands[band])
7882                                 continue;
7883
7884                         err = ieee80211_get_ratemask(wiphy->bands[band],
7885                                                      nla_data(attr),
7886                                                      nla_len(attr),
7887                                                      &request->rates[band]);
7888                         if (err)
7889                                 goto out_free;
7890                 }
7891         }
7892
7893         if (info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]) {
7894                 if (!wiphy_ext_feature_isset(wiphy,
7895                                         NL80211_EXT_FEATURE_SET_SCAN_DWELL)) {
7896                         err = -EOPNOTSUPP;
7897                         goto out_free;
7898                 }
7899
7900                 request->duration =
7901                         nla_get_u16(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]);
7902                 request->duration_mandatory =
7903                         nla_get_flag(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION_MANDATORY]);
7904         }
7905
7906         err = nl80211_check_scan_flags(wiphy, wdev, request, info->attrs,
7907                                        false);
7908         if (err)
7909                 goto out_free;
7910
7911         request->no_cck =
7912                 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
7913
7914         /* Initial implementation used NL80211_ATTR_MAC to set the specific
7915          * BSSID to scan for. This was problematic because that same attribute
7916          * was already used for another purpose (local random MAC address). The
7917          * NL80211_ATTR_BSSID attribute was added to fix this. For backwards
7918          * compatibility with older userspace components, also use the
7919          * NL80211_ATTR_MAC value here if it can be determined to be used for
7920          * the specific BSSID use case instead of the random MAC address
7921          * (NL80211_ATTR_SCAN_FLAGS is used to enable random MAC address use).
7922          */
7923         if (info->attrs[NL80211_ATTR_BSSID])
7924                 memcpy(request->bssid,
7925                        nla_data(info->attrs[NL80211_ATTR_BSSID]), ETH_ALEN);
7926         else if (!(request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) &&
7927                  info->attrs[NL80211_ATTR_MAC])
7928                 memcpy(request->bssid, nla_data(info->attrs[NL80211_ATTR_MAC]),
7929                        ETH_ALEN);
7930         else
7931                 eth_broadcast_addr(request->bssid);
7932
7933         request->wdev = wdev;
7934         request->wiphy = &rdev->wiphy;
7935         request->scan_start = jiffies;
7936
7937         rdev->scan_req = request;
7938         err = rdev_scan(rdev, request);
7939
7940         if (!err) {
7941                 nl80211_send_scan_start(rdev, wdev);
7942                 if (wdev->netdev)
7943                         dev_hold(wdev->netdev);
7944         } else {
7945  out_free:
7946                 rdev->scan_req = NULL;
7947                 kfree(request);
7948         }
7949
7950  unlock:
7951         return err;
7952 }
7953
7954 static int nl80211_abort_scan(struct sk_buff *skb, struct genl_info *info)
7955 {
7956         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7957         struct wireless_dev *wdev = info->user_ptr[1];
7958
7959         if (!rdev->ops->abort_scan)
7960                 return -EOPNOTSUPP;
7961
7962         if (rdev->scan_msg)
7963                 return 0;
7964
7965         if (!rdev->scan_req)
7966                 return -ENOENT;
7967
7968         rdev_abort_scan(rdev, wdev);
7969         return 0;
7970 }
7971
7972 static int
7973 nl80211_parse_sched_scan_plans(struct wiphy *wiphy, int n_plans,
7974                                struct cfg80211_sched_scan_request *request,
7975                                struct nlattr **attrs)
7976 {
7977         int tmp, err, i = 0;
7978         struct nlattr *attr;
7979
7980         if (!attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
7981                 u32 interval;
7982
7983                 /*
7984                  * If scan plans are not specified,
7985                  * %NL80211_ATTR_SCHED_SCAN_INTERVAL will be specified. In this
7986                  * case one scan plan will be set with the specified scan
7987                  * interval and infinite number of iterations.
7988                  */
7989                 interval = nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
7990                 if (!interval)
7991                         return -EINVAL;
7992
7993                 request->scan_plans[0].interval =
7994                         DIV_ROUND_UP(interval, MSEC_PER_SEC);
7995                 if (!request->scan_plans[0].interval)
7996                         return -EINVAL;
7997
7998                 if (request->scan_plans[0].interval >
7999                     wiphy->max_sched_scan_plan_interval)
8000                         request->scan_plans[0].interval =
8001                                 wiphy->max_sched_scan_plan_interval;
8002
8003                 return 0;
8004         }
8005
8006         nla_for_each_nested(attr, attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp) {
8007                 struct nlattr *plan[NL80211_SCHED_SCAN_PLAN_MAX + 1];
8008
8009                 if (WARN_ON(i >= n_plans))
8010                         return -EINVAL;
8011
8012                 err = nla_parse_nested_deprecated(plan,
8013                                                   NL80211_SCHED_SCAN_PLAN_MAX,
8014                                                   attr, nl80211_plan_policy,
8015                                                   NULL);
8016                 if (err)
8017                         return err;
8018
8019                 if (!plan[NL80211_SCHED_SCAN_PLAN_INTERVAL])
8020                         return -EINVAL;
8021
8022                 request->scan_plans[i].interval =
8023                         nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_INTERVAL]);
8024                 if (!request->scan_plans[i].interval ||
8025                     request->scan_plans[i].interval >
8026                     wiphy->max_sched_scan_plan_interval)
8027                         return -EINVAL;
8028
8029                 if (plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]) {
8030                         request->scan_plans[i].iterations =
8031                                 nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]);
8032                         if (!request->scan_plans[i].iterations ||
8033                             (request->scan_plans[i].iterations >
8034                              wiphy->max_sched_scan_plan_iterations))
8035                                 return -EINVAL;
8036                 } else if (i < n_plans - 1) {
8037                         /*
8038                          * All scan plans but the last one must specify
8039                          * a finite number of iterations
8040                          */
8041                         return -EINVAL;
8042                 }
8043
8044                 i++;
8045         }
8046
8047         /*
8048          * The last scan plan must not specify the number of
8049          * iterations, it is supposed to run infinitely
8050          */
8051         if (request->scan_plans[n_plans - 1].iterations)
8052                 return  -EINVAL;
8053
8054         return 0;
8055 }
8056
8057 static int
8058 nl80211_parse_sched_scan_per_band_rssi(struct wiphy *wiphy,
8059                                        struct cfg80211_match_set *match_sets,
8060                                        struct nlattr *tb_band_rssi,
8061                                        s32 rssi_thold)
8062 {
8063         struct nlattr *attr;
8064         int i, tmp, ret = 0;
8065
8066         if (!wiphy_ext_feature_isset(wiphy,
8067                     NL80211_EXT_FEATURE_SCHED_SCAN_BAND_SPECIFIC_RSSI_THOLD)) {
8068                 if (tb_band_rssi)
8069                         ret = -EOPNOTSUPP;
8070                 else
8071                         for (i = 0; i < NUM_NL80211_BANDS; i++)
8072                                 match_sets->per_band_rssi_thold[i] =
8073                                         NL80211_SCAN_RSSI_THOLD_OFF;
8074                 return ret;
8075         }
8076
8077         for (i = 0; i < NUM_NL80211_BANDS; i++)
8078                 match_sets->per_band_rssi_thold[i] = rssi_thold;
8079
8080         nla_for_each_nested(attr, tb_band_rssi, tmp) {
8081                 enum nl80211_band band = nla_type(attr);
8082
8083                 if (band < 0 || band >= NUM_NL80211_BANDS)
8084                         return -EINVAL;
8085
8086                 match_sets->per_band_rssi_thold[band] = nla_get_s32(attr);
8087         }
8088
8089         return 0;
8090 }
8091
8092 static struct cfg80211_sched_scan_request *
8093 nl80211_parse_sched_scan(struct wiphy *wiphy, struct wireless_dev *wdev,
8094                          struct nlattr **attrs, int max_match_sets)
8095 {
8096         struct cfg80211_sched_scan_request *request;
8097         struct nlattr *attr;
8098         int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i, n_plans = 0;
8099         enum nl80211_band band;
8100         size_t ie_len;
8101         struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
8102         s32 default_match_rssi = NL80211_SCAN_RSSI_THOLD_OFF;
8103
8104         if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
8105                 n_channels = validate_scan_freqs(
8106                                 attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
8107                 if (!n_channels)
8108                         return ERR_PTR(-EINVAL);
8109         } else {
8110                 n_channels = ieee80211_get_num_supported_channels(wiphy);
8111         }
8112
8113         if (attrs[NL80211_ATTR_SCAN_SSIDS])
8114                 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
8115                                     tmp)
8116                         n_ssids++;
8117
8118         if (n_ssids > wiphy->max_sched_scan_ssids)
8119                 return ERR_PTR(-EINVAL);
8120
8121         /*
8122          * First, count the number of 'real' matchsets. Due to an issue with
8123          * the old implementation, matchsets containing only the RSSI attribute
8124          * (NL80211_SCHED_SCAN_MATCH_ATTR_RSSI) are considered as the 'default'
8125          * RSSI for all matchsets, rather than their own matchset for reporting
8126          * all APs with a strong RSSI. This is needed to be compatible with
8127          * older userspace that treated a matchset with only the RSSI as the
8128          * global RSSI for all other matchsets - if there are other matchsets.
8129          */
8130         if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
8131                 nla_for_each_nested(attr,
8132                                     attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
8133                                     tmp) {
8134                         struct nlattr *rssi;
8135
8136                         err = nla_parse_nested_deprecated(tb,
8137                                                           NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
8138                                                           attr,
8139                                                           nl80211_match_policy,
8140                                                           NULL);
8141                         if (err)
8142                                 return ERR_PTR(err);
8143
8144                         /* SSID and BSSID are mutually exclusive */
8145                         if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID] &&
8146                             tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID])
8147                                 return ERR_PTR(-EINVAL);
8148
8149                         /* add other standalone attributes here */
8150                         if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID] ||
8151                             tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID]) {
8152                                 n_match_sets++;
8153                                 continue;
8154                         }
8155                         rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
8156                         if (rssi)
8157                                 default_match_rssi = nla_get_s32(rssi);
8158                 }
8159         }
8160
8161         /* However, if there's no other matchset, add the RSSI one */
8162         if (!n_match_sets && default_match_rssi != NL80211_SCAN_RSSI_THOLD_OFF)
8163                 n_match_sets = 1;
8164
8165         if (n_match_sets > max_match_sets)
8166                 return ERR_PTR(-EINVAL);
8167
8168         if (attrs[NL80211_ATTR_IE])
8169                 ie_len = nla_len(attrs[NL80211_ATTR_IE]);
8170         else
8171                 ie_len = 0;
8172
8173         if (ie_len > wiphy->max_sched_scan_ie_len)
8174                 return ERR_PTR(-EINVAL);
8175
8176         if (attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
8177                 /*
8178                  * NL80211_ATTR_SCHED_SCAN_INTERVAL must not be specified since
8179                  * each scan plan already specifies its own interval
8180                  */
8181                 if (attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
8182                         return ERR_PTR(-EINVAL);
8183
8184                 nla_for_each_nested(attr,
8185                                     attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp)
8186                         n_plans++;
8187         } else {
8188                 /*
8189                  * The scan interval attribute is kept for backward
8190                  * compatibility. If no scan plans are specified and sched scan
8191                  * interval is specified, one scan plan will be set with this
8192                  * scan interval and infinite number of iterations.
8193                  */
8194                 if (!attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
8195                         return ERR_PTR(-EINVAL);
8196
8197                 n_plans = 1;
8198         }
8199
8200         if (!n_plans || n_plans > wiphy->max_sched_scan_plans)
8201                 return ERR_PTR(-EINVAL);
8202
8203         if (!wiphy_ext_feature_isset(
8204                     wiphy, NL80211_EXT_FEATURE_SCHED_SCAN_RELATIVE_RSSI) &&
8205             (attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI] ||
8206              attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]))
8207                 return ERR_PTR(-EINVAL);
8208
8209         request = kzalloc(sizeof(*request)
8210                         + sizeof(*request->ssids) * n_ssids
8211                         + sizeof(*request->match_sets) * n_match_sets
8212                         + sizeof(*request->scan_plans) * n_plans
8213                         + sizeof(*request->channels) * n_channels
8214                         + ie_len, GFP_KERNEL);
8215         if (!request)
8216                 return ERR_PTR(-ENOMEM);
8217
8218         if (n_ssids)
8219                 request->ssids = (void *)&request->channels[n_channels];
8220         request->n_ssids = n_ssids;
8221         if (ie_len) {
8222                 if (n_ssids)
8223                         request->ie = (void *)(request->ssids + n_ssids);
8224                 else
8225                         request->ie = (void *)(request->channels + n_channels);
8226         }
8227
8228         if (n_match_sets) {
8229                 if (request->ie)
8230                         request->match_sets = (void *)(request->ie + ie_len);
8231                 else if (n_ssids)
8232                         request->match_sets =
8233                                 (void *)(request->ssids + n_ssids);
8234                 else
8235                         request->match_sets =
8236                                 (void *)(request->channels + n_channels);
8237         }
8238         request->n_match_sets = n_match_sets;
8239
8240         if (n_match_sets)
8241                 request->scan_plans = (void *)(request->match_sets +
8242                                                n_match_sets);
8243         else if (request->ie)
8244                 request->scan_plans = (void *)(request->ie + ie_len);
8245         else if (n_ssids)
8246                 request->scan_plans = (void *)(request->ssids + n_ssids);
8247         else
8248                 request->scan_plans = (void *)(request->channels + n_channels);
8249
8250         request->n_scan_plans = n_plans;
8251
8252         i = 0;
8253         if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
8254                 /* user specified, bail out if channel not found */
8255                 nla_for_each_nested(attr,
8256                                     attrs[NL80211_ATTR_SCAN_FREQUENCIES],
8257                                     tmp) {
8258                         struct ieee80211_channel *chan;
8259
8260                         chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
8261
8262                         if (!chan) {
8263                                 err = -EINVAL;
8264                                 goto out_free;
8265                         }
8266
8267                         /* ignore disabled channels */
8268                         if (chan->flags & IEEE80211_CHAN_DISABLED)
8269                                 continue;
8270
8271                         request->channels[i] = chan;
8272                         i++;
8273                 }
8274         } else {
8275                 /* all channels */
8276                 for (band = 0; band < NUM_NL80211_BANDS; band++) {
8277                         int j;
8278
8279                         if (!wiphy->bands[band])
8280                                 continue;
8281                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
8282                                 struct ieee80211_channel *chan;
8283
8284                                 chan = &wiphy->bands[band]->channels[j];
8285
8286                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
8287                                         continue;
8288
8289                                 request->channels[i] = chan;
8290                                 i++;
8291                         }
8292                 }
8293         }
8294
8295         if (!i) {
8296                 err = -EINVAL;
8297                 goto out_free;
8298         }
8299
8300         request->n_channels = i;
8301
8302         i = 0;
8303         if (n_ssids) {
8304                 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
8305                                     tmp) {
8306                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
8307                                 err = -EINVAL;
8308                                 goto out_free;
8309                         }
8310                         request->ssids[i].ssid_len = nla_len(attr);
8311                         memcpy(request->ssids[i].ssid, nla_data(attr),
8312                                nla_len(attr));
8313                         i++;
8314                 }
8315         }
8316
8317         i = 0;
8318         if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
8319                 nla_for_each_nested(attr,
8320                                     attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
8321                                     tmp) {
8322                         struct nlattr *ssid, *bssid, *rssi;
8323
8324                         err = nla_parse_nested_deprecated(tb,
8325                                                           NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
8326                                                           attr,
8327                                                           nl80211_match_policy,
8328                                                           NULL);
8329                         if (err)
8330                                 goto out_free;
8331                         ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID];
8332                         bssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID];
8333
8334                         if (!ssid && !bssid) {
8335                                 i++;
8336                                 continue;
8337                         }
8338
8339                         if (WARN_ON(i >= n_match_sets)) {
8340                                 /* this indicates a programming error,
8341                                  * the loop above should have verified
8342                                  * things properly
8343                                  */
8344                                 err = -EINVAL;
8345                                 goto out_free;
8346                         }
8347
8348                         if (ssid) {
8349                                 if (nla_len(ssid) > IEEE80211_MAX_SSID_LEN) {
8350                                         err = -EINVAL;
8351                                         goto out_free;
8352                                 }
8353                                 memcpy(request->match_sets[i].ssid.ssid,
8354                                        nla_data(ssid), nla_len(ssid));
8355                                 request->match_sets[i].ssid.ssid_len =
8356                                         nla_len(ssid);
8357                         }
8358                         if (bssid) {
8359                                 if (nla_len(bssid) != ETH_ALEN) {
8360                                         err = -EINVAL;
8361                                         goto out_free;
8362                                 }
8363                                 memcpy(request->match_sets[i].bssid,
8364                                        nla_data(bssid), ETH_ALEN);
8365                         }
8366
8367                         /* special attribute - old implementation w/a */
8368                         request->match_sets[i].rssi_thold = default_match_rssi;
8369                         rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
8370                         if (rssi)
8371                                 request->match_sets[i].rssi_thold =
8372                                         nla_get_s32(rssi);
8373
8374                         /* Parse per band RSSI attribute */
8375                         err = nl80211_parse_sched_scan_per_band_rssi(wiphy,
8376                                 &request->match_sets[i],
8377                                 tb[NL80211_SCHED_SCAN_MATCH_PER_BAND_RSSI],
8378                                 request->match_sets[i].rssi_thold);
8379                         if (err)
8380                                 goto out_free;
8381
8382                         i++;
8383                 }
8384
8385                 /* there was no other matchset, so the RSSI one is alone */
8386                 if (i == 0 && n_match_sets)
8387                         request->match_sets[0].rssi_thold = default_match_rssi;
8388
8389                 request->min_rssi_thold = INT_MAX;
8390                 for (i = 0; i < n_match_sets; i++)
8391                         request->min_rssi_thold =
8392                                 min(request->match_sets[i].rssi_thold,
8393                                     request->min_rssi_thold);
8394         } else {
8395                 request->min_rssi_thold = NL80211_SCAN_RSSI_THOLD_OFF;
8396         }
8397
8398         if (ie_len) {
8399                 request->ie_len = ie_len;
8400                 memcpy((void *)request->ie,
8401                        nla_data(attrs[NL80211_ATTR_IE]),
8402                        request->ie_len);
8403         }
8404
8405         err = nl80211_check_scan_flags(wiphy, wdev, request, attrs, true);
8406         if (err)
8407                 goto out_free;
8408
8409         if (attrs[NL80211_ATTR_SCHED_SCAN_DELAY])
8410                 request->delay =
8411                         nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_DELAY]);
8412
8413         if (attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI]) {
8414                 request->relative_rssi = nla_get_s8(
8415                         attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI]);
8416                 request->relative_rssi_set = true;
8417         }
8418
8419         if (request->relative_rssi_set &&
8420             attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]) {
8421                 struct nl80211_bss_select_rssi_adjust *rssi_adjust;
8422
8423                 rssi_adjust = nla_data(
8424                         attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]);
8425                 request->rssi_adjust.band = rssi_adjust->band;
8426                 request->rssi_adjust.delta = rssi_adjust->delta;
8427                 if (!is_band_valid(wiphy, request->rssi_adjust.band)) {
8428                         err = -EINVAL;
8429                         goto out_free;
8430                 }
8431         }
8432
8433         err = nl80211_parse_sched_scan_plans(wiphy, n_plans, request, attrs);
8434         if (err)
8435                 goto out_free;
8436
8437         request->scan_start = jiffies;
8438
8439         return request;
8440
8441 out_free:
8442         kfree(request);
8443         return ERR_PTR(err);
8444 }
8445
8446 static int nl80211_start_sched_scan(struct sk_buff *skb,
8447                                     struct genl_info *info)
8448 {
8449         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8450         struct net_device *dev = info->user_ptr[1];
8451         struct wireless_dev *wdev = dev->ieee80211_ptr;
8452         struct cfg80211_sched_scan_request *sched_scan_req;
8453         bool want_multi;
8454         int err;
8455
8456         if (!rdev->wiphy.max_sched_scan_reqs || !rdev->ops->sched_scan_start)
8457                 return -EOPNOTSUPP;
8458
8459         want_multi = info->attrs[NL80211_ATTR_SCHED_SCAN_MULTI];
8460         err = cfg80211_sched_scan_req_possible(rdev, want_multi);
8461         if (err)
8462                 return err;
8463
8464         sched_scan_req = nl80211_parse_sched_scan(&rdev->wiphy, wdev,
8465                                                   info->attrs,
8466                                                   rdev->wiphy.max_match_sets);
8467
8468         err = PTR_ERR_OR_ZERO(sched_scan_req);
8469         if (err)
8470                 goto out_err;
8471
8472         /* leave request id zero for legacy request
8473          * or if driver does not support multi-scheduled scan
8474          */
8475         if (want_multi && rdev->wiphy.max_sched_scan_reqs > 1)
8476                 sched_scan_req->reqid = cfg80211_assign_cookie(rdev);
8477
8478         err = rdev_sched_scan_start(rdev, dev, sched_scan_req);
8479         if (err)
8480                 goto out_free;
8481
8482         sched_scan_req->dev = dev;
8483         sched_scan_req->wiphy = &rdev->wiphy;
8484
8485         if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
8486                 sched_scan_req->owner_nlportid = info->snd_portid;
8487
8488         cfg80211_add_sched_scan_req(rdev, sched_scan_req);
8489
8490         nl80211_send_sched_scan(sched_scan_req, NL80211_CMD_START_SCHED_SCAN);
8491         return 0;
8492
8493 out_free:
8494         kfree(sched_scan_req);
8495 out_err:
8496         return err;
8497 }
8498
8499 static int nl80211_stop_sched_scan(struct sk_buff *skb,
8500                                    struct genl_info *info)
8501 {
8502         struct cfg80211_sched_scan_request *req;
8503         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8504         u64 cookie;
8505
8506         if (!rdev->wiphy.max_sched_scan_reqs || !rdev->ops->sched_scan_stop)
8507                 return -EOPNOTSUPP;
8508
8509         if (info->attrs[NL80211_ATTR_COOKIE]) {
8510                 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
8511                 return __cfg80211_stop_sched_scan(rdev, cookie, false);
8512         }
8513
8514         req = list_first_or_null_rcu(&rdev->sched_scan_req_list,
8515                                      struct cfg80211_sched_scan_request,
8516                                      list);
8517         if (!req || req->reqid ||
8518             (req->owner_nlportid &&
8519              req->owner_nlportid != info->snd_portid))
8520                 return -ENOENT;
8521
8522         return cfg80211_stop_sched_scan_req(rdev, req, false);
8523 }
8524
8525 static int nl80211_start_radar_detection(struct sk_buff *skb,
8526                                          struct genl_info *info)
8527 {
8528         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8529         struct net_device *dev = info->user_ptr[1];
8530         struct wireless_dev *wdev = dev->ieee80211_ptr;
8531         struct wiphy *wiphy = wdev->wiphy;
8532         struct cfg80211_chan_def chandef;
8533         enum nl80211_dfs_regions dfs_region;
8534         unsigned int cac_time_ms;
8535         int err;
8536
8537         dfs_region = reg_get_dfs_region(wiphy);
8538         if (dfs_region == NL80211_DFS_UNSET)
8539                 return -EINVAL;
8540
8541         err = nl80211_parse_chandef(rdev, info, &chandef);
8542         if (err)
8543                 return err;
8544
8545         if (netif_carrier_ok(dev))
8546                 return -EBUSY;
8547
8548         if (wdev->cac_started)
8549                 return -EBUSY;
8550
8551         err = cfg80211_chandef_dfs_required(wiphy, &chandef, wdev->iftype);
8552         if (err < 0)
8553                 return err;
8554
8555         if (err == 0)
8556                 return -EINVAL;
8557
8558         if (!cfg80211_chandef_dfs_usable(wiphy, &chandef))
8559                 return -EINVAL;
8560
8561         /* CAC start is offloaded to HW and can't be started manually */
8562         if (wiphy_ext_feature_isset(wiphy, NL80211_EXT_FEATURE_DFS_OFFLOAD))
8563                 return -EOPNOTSUPP;
8564
8565         if (!rdev->ops->start_radar_detection)
8566                 return -EOPNOTSUPP;
8567
8568         cac_time_ms = cfg80211_chandef_dfs_cac_time(&rdev->wiphy, &chandef);
8569         if (WARN_ON(!cac_time_ms))
8570                 cac_time_ms = IEEE80211_DFS_MIN_CAC_TIME_MS;
8571
8572         err = rdev_start_radar_detection(rdev, dev, &chandef, cac_time_ms);
8573         if (!err) {
8574                 wdev->chandef = chandef;
8575                 wdev->cac_started = true;
8576                 wdev->cac_start_time = jiffies;
8577                 wdev->cac_time_ms = cac_time_ms;
8578         }
8579         return err;
8580 }
8581
8582 static int nl80211_notify_radar_detection(struct sk_buff *skb,
8583                                           struct genl_info *info)
8584 {
8585         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8586         struct net_device *dev = info->user_ptr[1];
8587         struct wireless_dev *wdev = dev->ieee80211_ptr;
8588         struct wiphy *wiphy = wdev->wiphy;
8589         struct cfg80211_chan_def chandef;
8590         enum nl80211_dfs_regions dfs_region;
8591         int err;
8592
8593         dfs_region = reg_get_dfs_region(wiphy);
8594         if (dfs_region == NL80211_DFS_UNSET) {
8595                 GENL_SET_ERR_MSG(info,
8596                                  "DFS Region is not set. Unexpected Radar indication");
8597                 return -EINVAL;
8598         }
8599
8600         err = nl80211_parse_chandef(rdev, info, &chandef);
8601         if (err) {
8602                 GENL_SET_ERR_MSG(info, "Unable to extract chandef info");
8603                 return err;
8604         }
8605
8606         err = cfg80211_chandef_dfs_required(wiphy, &chandef, wdev->iftype);
8607         if (err < 0) {
8608                 GENL_SET_ERR_MSG(info, "chandef is invalid");
8609                 return err;
8610         }
8611
8612         if (err == 0) {
8613                 GENL_SET_ERR_MSG(info,
8614                                  "Unexpected Radar indication for chandef/iftype");
8615                 return -EINVAL;
8616         }
8617
8618         /* Do not process this notification if radar is already detected
8619          * by kernel on this channel, and return success.
8620          */
8621         if (chandef.chan->dfs_state == NL80211_DFS_UNAVAILABLE)
8622                 return 0;
8623
8624         cfg80211_set_dfs_state(wiphy, &chandef, NL80211_DFS_UNAVAILABLE);
8625
8626         cfg80211_sched_dfs_chan_update(rdev);
8627
8628         rdev->radar_chandef = chandef;
8629
8630         /* Propagate this notification to other radios as well */
8631         queue_work(cfg80211_wq, &rdev->propagate_radar_detect_wk);
8632
8633         return 0;
8634 }
8635
8636 static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info)
8637 {
8638         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8639         struct net_device *dev = info->user_ptr[1];
8640         struct wireless_dev *wdev = dev->ieee80211_ptr;
8641         struct cfg80211_csa_settings params;
8642         /* csa_attrs is defined static to avoid waste of stack size - this
8643          * function is called under RTNL lock, so this should not be a problem.
8644          */
8645         static struct nlattr *csa_attrs[NL80211_ATTR_MAX+1];
8646         int err;
8647         bool need_new_beacon = false;
8648         bool need_handle_dfs_flag = true;
8649         int len, i;
8650         u32 cs_count;
8651
8652         if (!rdev->ops->channel_switch ||
8653             !(rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH))
8654                 return -EOPNOTSUPP;
8655
8656         switch (dev->ieee80211_ptr->iftype) {
8657         case NL80211_IFTYPE_AP:
8658         case NL80211_IFTYPE_P2P_GO:
8659                 need_new_beacon = true;
8660                 /* For all modes except AP the handle_dfs flag needs to be
8661                  * supplied to tell the kernel that userspace will handle radar
8662                  * events when they happen. Otherwise a switch to a channel
8663                  * requiring DFS will be rejected.
8664                  */
8665                 need_handle_dfs_flag = false;
8666
8667                 /* useless if AP is not running */
8668                 if (!wdev->beacon_interval)
8669                         return -ENOTCONN;
8670                 break;
8671         case NL80211_IFTYPE_ADHOC:
8672                 if (!wdev->ssid_len)
8673                         return -ENOTCONN;
8674                 break;
8675         case NL80211_IFTYPE_MESH_POINT:
8676                 if (!wdev->mesh_id_len)
8677                         return -ENOTCONN;
8678                 break;
8679         default:
8680                 return -EOPNOTSUPP;
8681         }
8682
8683         memset(&params, 0, sizeof(params));
8684         params.beacon_csa.ftm_responder = -1;
8685
8686         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
8687             !info->attrs[NL80211_ATTR_CH_SWITCH_COUNT])
8688                 return -EINVAL;
8689
8690         /* only important for AP, IBSS and mesh create IEs internally */
8691         if (need_new_beacon && !info->attrs[NL80211_ATTR_CSA_IES])
8692                 return -EINVAL;
8693
8694         /* Even though the attribute is u32, the specification says
8695          * u8, so let's make sure we don't overflow.
8696          */
8697         cs_count = nla_get_u32(info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]);
8698         if (cs_count > 255)
8699                 return -EINVAL;
8700
8701         params.count = cs_count;
8702
8703         if (!need_new_beacon)
8704                 goto skip_beacons;
8705
8706         err = nl80211_parse_beacon(rdev, info->attrs, &params.beacon_after);
8707         if (err)
8708                 return err;
8709
8710         err = nla_parse_nested_deprecated(csa_attrs, NL80211_ATTR_MAX,
8711                                           info->attrs[NL80211_ATTR_CSA_IES],
8712                                           nl80211_policy, info->extack);
8713         if (err)
8714                 return err;
8715
8716         err = nl80211_parse_beacon(rdev, csa_attrs, &params.beacon_csa);
8717         if (err)
8718                 return err;
8719
8720         if (!csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON])
8721                 return -EINVAL;
8722
8723         len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
8724         if (!len || (len % sizeof(u16)))
8725                 return -EINVAL;
8726
8727         params.n_counter_offsets_beacon = len / sizeof(u16);
8728         if (rdev->wiphy.max_num_csa_counters &&
8729             (params.n_counter_offsets_beacon >
8730              rdev->wiphy.max_num_csa_counters))
8731                 return -EINVAL;
8732
8733         params.counter_offsets_beacon =
8734                 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
8735
8736         /* sanity checks - counters should fit and be the same */
8737         for (i = 0; i < params.n_counter_offsets_beacon; i++) {
8738                 u16 offset = params.counter_offsets_beacon[i];
8739
8740                 if (offset >= params.beacon_csa.tail_len)
8741                         return -EINVAL;
8742
8743                 if (params.beacon_csa.tail[offset] != params.count)
8744                         return -EINVAL;
8745         }
8746
8747         if (csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]) {
8748                 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
8749                 if (!len || (len % sizeof(u16)))
8750                         return -EINVAL;
8751
8752                 params.n_counter_offsets_presp = len / sizeof(u16);
8753                 if (rdev->wiphy.max_num_csa_counters &&
8754                     (params.n_counter_offsets_presp >
8755                      rdev->wiphy.max_num_csa_counters))
8756                         return -EINVAL;
8757
8758                 params.counter_offsets_presp =
8759                         nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
8760
8761                 /* sanity checks - counters should fit and be the same */
8762                 for (i = 0; i < params.n_counter_offsets_presp; i++) {
8763                         u16 offset = params.counter_offsets_presp[i];
8764
8765                         if (offset >= params.beacon_csa.probe_resp_len)
8766                                 return -EINVAL;
8767
8768                         if (params.beacon_csa.probe_resp[offset] !=
8769                             params.count)
8770                                 return -EINVAL;
8771                 }
8772         }
8773
8774 skip_beacons:
8775         err = nl80211_parse_chandef(rdev, info, &params.chandef);
8776         if (err)
8777                 return err;
8778
8779         if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params.chandef,
8780                                            wdev->iftype))
8781                 return -EINVAL;
8782
8783         err = cfg80211_chandef_dfs_required(wdev->wiphy,
8784                                             &params.chandef,
8785                                             wdev->iftype);
8786         if (err < 0)
8787                 return err;
8788
8789         if (err > 0) {
8790                 params.radar_required = true;
8791                 if (need_handle_dfs_flag &&
8792                     !nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS])) {
8793                         return -EINVAL;
8794                 }
8795         }
8796
8797         if (info->attrs[NL80211_ATTR_CH_SWITCH_BLOCK_TX])
8798                 params.block_tx = true;
8799
8800         wdev_lock(wdev);
8801         err = rdev_channel_switch(rdev, dev, &params);
8802         wdev_unlock(wdev);
8803
8804         return err;
8805 }
8806
8807 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
8808                             u32 seq, int flags,
8809                             struct cfg80211_registered_device *rdev,
8810                             struct wireless_dev *wdev,
8811                             struct cfg80211_internal_bss *intbss)
8812 {
8813         struct cfg80211_bss *res = &intbss->pub;
8814         const struct cfg80211_bss_ies *ies;
8815         void *hdr;
8816         struct nlattr *bss;
8817
8818         ASSERT_WDEV_LOCK(wdev);
8819
8820         hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
8821                              NL80211_CMD_NEW_SCAN_RESULTS);
8822         if (!hdr)
8823                 return -1;
8824
8825         genl_dump_check_consistent(cb, hdr);
8826
8827         if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation))
8828                 goto nla_put_failure;
8829         if (wdev->netdev &&
8830             nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex))
8831                 goto nla_put_failure;
8832         if (nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
8833                               NL80211_ATTR_PAD))
8834                 goto nla_put_failure;
8835
8836         bss = nla_nest_start_noflag(msg, NL80211_ATTR_BSS);
8837         if (!bss)
8838                 goto nla_put_failure;
8839         if ((!is_zero_ether_addr(res->bssid) &&
8840              nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid)))
8841                 goto nla_put_failure;
8842
8843         rcu_read_lock();
8844         /* indicate whether we have probe response data or not */
8845         if (rcu_access_pointer(res->proberesp_ies) &&
8846             nla_put_flag(msg, NL80211_BSS_PRESP_DATA))
8847                 goto fail_unlock_rcu;
8848
8849         /* this pointer prefers to be pointed to probe response data
8850          * but is always valid
8851          */
8852         ies = rcu_dereference(res->ies);
8853         if (ies) {
8854                 if (nla_put_u64_64bit(msg, NL80211_BSS_TSF, ies->tsf,
8855                                       NL80211_BSS_PAD))
8856                         goto fail_unlock_rcu;
8857                 if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS,
8858                                         ies->len, ies->data))
8859                         goto fail_unlock_rcu;
8860         }
8861
8862         /* and this pointer is always (unless driver didn't know) beacon data */
8863         ies = rcu_dereference(res->beacon_ies);
8864         if (ies && ies->from_beacon) {
8865                 if (nla_put_u64_64bit(msg, NL80211_BSS_BEACON_TSF, ies->tsf,
8866                                       NL80211_BSS_PAD))
8867                         goto fail_unlock_rcu;
8868                 if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES,
8869                                         ies->len, ies->data))
8870                         goto fail_unlock_rcu;
8871         }
8872         rcu_read_unlock();
8873
8874         if (res->beacon_interval &&
8875             nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval))
8876                 goto nla_put_failure;
8877         if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) ||
8878             nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) ||
8879             nla_put_u32(msg, NL80211_BSS_CHAN_WIDTH, res->scan_width) ||
8880             nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO,
8881                         jiffies_to_msecs(jiffies - intbss->ts)))
8882                 goto nla_put_failure;
8883
8884         if (intbss->parent_tsf &&
8885             (nla_put_u64_64bit(msg, NL80211_BSS_PARENT_TSF,
8886                                intbss->parent_tsf, NL80211_BSS_PAD) ||
8887              nla_put(msg, NL80211_BSS_PARENT_BSSID, ETH_ALEN,
8888                      intbss->parent_bssid)))
8889                 goto nla_put_failure;
8890
8891         if (intbss->ts_boottime &&
8892             nla_put_u64_64bit(msg, NL80211_BSS_LAST_SEEN_BOOTTIME,
8893                               intbss->ts_boottime, NL80211_BSS_PAD))
8894                 goto nla_put_failure;
8895
8896         if (!nl80211_put_signal(msg, intbss->pub.chains,
8897                                 intbss->pub.chain_signal,
8898                                 NL80211_BSS_CHAIN_SIGNAL))
8899                 goto nla_put_failure;
8900
8901         switch (rdev->wiphy.signal_type) {
8902         case CFG80211_SIGNAL_TYPE_MBM:
8903                 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal))
8904                         goto nla_put_failure;
8905                 break;
8906         case CFG80211_SIGNAL_TYPE_UNSPEC:
8907                 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal))
8908                         goto nla_put_failure;
8909                 break;
8910         default:
8911                 break;
8912         }
8913
8914         switch (wdev->iftype) {
8915         case NL80211_IFTYPE_P2P_CLIENT:
8916         case NL80211_IFTYPE_STATION:
8917                 if (intbss == wdev->current_bss &&
8918                     nla_put_u32(msg, NL80211_BSS_STATUS,
8919                                 NL80211_BSS_STATUS_ASSOCIATED))
8920                         goto nla_put_failure;
8921                 break;
8922         case NL80211_IFTYPE_ADHOC:
8923                 if (intbss == wdev->current_bss &&
8924                     nla_put_u32(msg, NL80211_BSS_STATUS,
8925                                 NL80211_BSS_STATUS_IBSS_JOINED))
8926                         goto nla_put_failure;
8927                 break;
8928         default:
8929                 break;
8930         }
8931
8932         nla_nest_end(msg, bss);
8933
8934         genlmsg_end(msg, hdr);
8935         return 0;
8936
8937  fail_unlock_rcu:
8938         rcu_read_unlock();
8939  nla_put_failure:
8940         genlmsg_cancel(msg, hdr);
8941         return -EMSGSIZE;
8942 }
8943
8944 static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb)
8945 {
8946         struct cfg80211_registered_device *rdev;
8947         struct cfg80211_internal_bss *scan;
8948         struct wireless_dev *wdev;
8949         int start = cb->args[2], idx = 0;
8950         int err;
8951
8952         rtnl_lock();
8953         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
8954         if (err) {
8955                 rtnl_unlock();
8956                 return err;
8957         }
8958
8959         wdev_lock(wdev);
8960         spin_lock_bh(&rdev->bss_lock);
8961
8962         /*
8963          * dump_scan will be called multiple times to break up the scan results
8964          * into multiple messages.  It is unlikely that any more bss-es will be
8965          * expired after the first call, so only call only call this on the
8966          * first dump_scan invocation.
8967          */
8968         if (start == 0)
8969                 cfg80211_bss_expire(rdev);
8970
8971         cb->seq = rdev->bss_generation;
8972
8973         list_for_each_entry(scan, &rdev->bss_list, list) {
8974                 if (++idx <= start)
8975                         continue;
8976                 if (nl80211_send_bss(skb, cb,
8977                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
8978                                 rdev, wdev, scan) < 0) {
8979                         idx--;
8980                         break;
8981                 }
8982         }
8983
8984         spin_unlock_bh(&rdev->bss_lock);
8985         wdev_unlock(wdev);
8986
8987         cb->args[2] = idx;
8988         rtnl_unlock();
8989
8990         return skb->len;
8991 }
8992
8993 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq,
8994                                int flags, struct net_device *dev,
8995                                bool allow_radio_stats,
8996                                struct survey_info *survey)
8997 {
8998         void *hdr;
8999         struct nlattr *infoattr;
9000
9001         /* skip radio stats if userspace didn't request them */
9002         if (!survey->channel && !allow_radio_stats)
9003                 return 0;
9004
9005         hdr = nl80211hdr_put(msg, portid, seq, flags,
9006                              NL80211_CMD_NEW_SURVEY_RESULTS);
9007         if (!hdr)
9008                 return -ENOMEM;
9009
9010         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
9011                 goto nla_put_failure;
9012
9013         infoattr = nla_nest_start_noflag(msg, NL80211_ATTR_SURVEY_INFO);
9014         if (!infoattr)
9015                 goto nla_put_failure;
9016
9017         if (survey->channel &&
9018             nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY,
9019                         survey->channel->center_freq))
9020                 goto nla_put_failure;
9021
9022         if ((survey->filled & SURVEY_INFO_NOISE_DBM) &&
9023             nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise))
9024                 goto nla_put_failure;
9025         if ((survey->filled & SURVEY_INFO_IN_USE) &&
9026             nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE))
9027                 goto nla_put_failure;
9028         if ((survey->filled & SURVEY_INFO_TIME) &&
9029             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME,
9030                         survey->time, NL80211_SURVEY_INFO_PAD))
9031                 goto nla_put_failure;
9032         if ((survey->filled & SURVEY_INFO_TIME_BUSY) &&
9033             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_BUSY,
9034                               survey->time_busy, NL80211_SURVEY_INFO_PAD))
9035                 goto nla_put_failure;
9036         if ((survey->filled & SURVEY_INFO_TIME_EXT_BUSY) &&
9037             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_EXT_BUSY,
9038                               survey->time_ext_busy, NL80211_SURVEY_INFO_PAD))
9039                 goto nla_put_failure;
9040         if ((survey->filled & SURVEY_INFO_TIME_RX) &&
9041             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_RX,
9042                               survey->time_rx, NL80211_SURVEY_INFO_PAD))
9043                 goto nla_put_failure;
9044         if ((survey->filled & SURVEY_INFO_TIME_TX) &&
9045             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_TX,
9046                               survey->time_tx, NL80211_SURVEY_INFO_PAD))
9047                 goto nla_put_failure;
9048         if ((survey->filled & SURVEY_INFO_TIME_SCAN) &&
9049             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_SCAN,
9050                               survey->time_scan, NL80211_SURVEY_INFO_PAD))
9051                 goto nla_put_failure;
9052         if ((survey->filled & SURVEY_INFO_TIME_BSS_RX) &&
9053             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_BSS_RX,
9054                               survey->time_bss_rx, NL80211_SURVEY_INFO_PAD))
9055                 goto nla_put_failure;
9056
9057         nla_nest_end(msg, infoattr);
9058
9059         genlmsg_end(msg, hdr);
9060         return 0;
9061
9062  nla_put_failure:
9063         genlmsg_cancel(msg, hdr);
9064         return -EMSGSIZE;
9065 }
9066
9067 static int nl80211_dump_survey(struct sk_buff *skb, struct netlink_callback *cb)
9068 {
9069         struct nlattr **attrbuf;
9070         struct survey_info survey;
9071         struct cfg80211_registered_device *rdev;
9072         struct wireless_dev *wdev;
9073         int survey_idx = cb->args[2];
9074         int res;
9075         bool radio_stats;
9076
9077         attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf), GFP_KERNEL);
9078         if (!attrbuf)
9079                 return -ENOMEM;
9080
9081         rtnl_lock();
9082         res = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
9083         if (res)
9084                 goto out_err;
9085
9086         /* prepare_wdev_dump parsed the attributes */
9087         radio_stats = attrbuf[NL80211_ATTR_SURVEY_RADIO_STATS];
9088
9089         if (!wdev->netdev) {
9090                 res = -EINVAL;
9091                 goto out_err;
9092         }
9093
9094         if (!rdev->ops->dump_survey) {
9095                 res = -EOPNOTSUPP;
9096                 goto out_err;
9097         }
9098
9099         while (1) {
9100                 res = rdev_dump_survey(rdev, wdev->netdev, survey_idx, &survey);
9101                 if (res == -ENOENT)
9102                         break;
9103                 if (res)
9104                         goto out_err;
9105
9106                 /* don't send disabled channels, but do send non-channel data */
9107                 if (survey.channel &&
9108                     survey.channel->flags & IEEE80211_CHAN_DISABLED) {
9109                         survey_idx++;
9110                         continue;
9111                 }
9112
9113                 if (nl80211_send_survey(skb,
9114                                 NETLINK_CB(cb->skb).portid,
9115                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
9116                                 wdev->netdev, radio_stats, &survey) < 0)
9117                         goto out;
9118                 survey_idx++;
9119         }
9120
9121  out:
9122         cb->args[2] = survey_idx;
9123         res = skb->len;
9124  out_err:
9125         kfree(attrbuf);
9126         rtnl_unlock();
9127         return res;
9128 }
9129
9130 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
9131 {
9132         return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
9133                                   NL80211_WPA_VERSION_2 |
9134                                   NL80211_WPA_VERSION_3));
9135 }
9136
9137 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
9138 {
9139         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9140         struct net_device *dev = info->user_ptr[1];
9141         struct ieee80211_channel *chan;
9142         const u8 *bssid, *ssid, *ie = NULL, *auth_data = NULL;
9143         int err, ssid_len, ie_len = 0, auth_data_len = 0;
9144         enum nl80211_auth_type auth_type;
9145         struct key_parse key;
9146         bool local_state_change;
9147
9148         if (!info->attrs[NL80211_ATTR_MAC])
9149                 return -EINVAL;
9150
9151         if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
9152                 return -EINVAL;
9153
9154         if (!info->attrs[NL80211_ATTR_SSID])
9155                 return -EINVAL;
9156
9157         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
9158                 return -EINVAL;
9159
9160         err = nl80211_parse_key(info, &key);
9161         if (err)
9162                 return err;
9163
9164         if (key.idx >= 0) {
9165                 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
9166                         return -EINVAL;
9167                 if (!key.p.key || !key.p.key_len)
9168                         return -EINVAL;
9169                 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
9170                      key.p.key_len != WLAN_KEY_LEN_WEP40) &&
9171                     (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
9172                      key.p.key_len != WLAN_KEY_LEN_WEP104))
9173                         return -EINVAL;
9174                 if (key.idx > 3)
9175                         return -EINVAL;
9176         } else {
9177                 key.p.key_len = 0;
9178                 key.p.key = NULL;
9179         }
9180
9181         if (key.idx >= 0) {
9182                 int i;
9183                 bool ok = false;
9184
9185                 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
9186                         if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
9187                                 ok = true;
9188                                 break;
9189                         }
9190                 }
9191                 if (!ok)
9192                         return -EINVAL;
9193         }
9194
9195         if (!rdev->ops->auth)
9196                 return -EOPNOTSUPP;
9197
9198         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9199             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9200                 return -EOPNOTSUPP;
9201
9202         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9203         chan = nl80211_get_valid_chan(&rdev->wiphy,
9204                                       info->attrs[NL80211_ATTR_WIPHY_FREQ]);
9205         if (!chan)
9206                 return -EINVAL;
9207
9208         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
9209         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
9210
9211         if (info->attrs[NL80211_ATTR_IE]) {
9212                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9213                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9214         }
9215
9216         auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
9217         if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE))
9218                 return -EINVAL;
9219
9220         if ((auth_type == NL80211_AUTHTYPE_SAE ||
9221              auth_type == NL80211_AUTHTYPE_FILS_SK ||
9222              auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
9223              auth_type == NL80211_AUTHTYPE_FILS_PK) &&
9224             !info->attrs[NL80211_ATTR_AUTH_DATA])
9225                 return -EINVAL;
9226
9227         if (info->attrs[NL80211_ATTR_AUTH_DATA]) {
9228                 if (auth_type != NL80211_AUTHTYPE_SAE &&
9229                     auth_type != NL80211_AUTHTYPE_FILS_SK &&
9230                     auth_type != NL80211_AUTHTYPE_FILS_SK_PFS &&
9231                     auth_type != NL80211_AUTHTYPE_FILS_PK)
9232                         return -EINVAL;
9233                 auth_data = nla_data(info->attrs[NL80211_ATTR_AUTH_DATA]);
9234                 auth_data_len = nla_len(info->attrs[NL80211_ATTR_AUTH_DATA]);
9235                 /* need to include at least Auth Transaction and Status Code */
9236                 if (auth_data_len < 4)
9237                         return -EINVAL;
9238         }
9239
9240         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
9241
9242         /*
9243          * Since we no longer track auth state, ignore
9244          * requests to only change local state.
9245          */
9246         if (local_state_change)
9247                 return 0;
9248
9249         wdev_lock(dev->ieee80211_ptr);
9250         err = cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
9251                                  ssid, ssid_len, ie, ie_len,
9252                                  key.p.key, key.p.key_len, key.idx,
9253                                  auth_data, auth_data_len);
9254         wdev_unlock(dev->ieee80211_ptr);
9255         return err;
9256 }
9257
9258 static int validate_pae_over_nl80211(struct cfg80211_registered_device *rdev,
9259                                      struct genl_info *info)
9260 {
9261         if (!info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
9262                 GENL_SET_ERR_MSG(info, "SOCKET_OWNER not set");
9263                 return -EINVAL;
9264         }
9265
9266         if (!rdev->ops->tx_control_port ||
9267             !wiphy_ext_feature_isset(&rdev->wiphy,
9268                                      NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211))
9269                 return -EOPNOTSUPP;
9270
9271         return 0;
9272 }
9273
9274 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
9275                                    struct genl_info *info,
9276                                    struct cfg80211_crypto_settings *settings,
9277                                    int cipher_limit)
9278 {
9279         memset(settings, 0, sizeof(*settings));
9280
9281         settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
9282
9283         if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
9284                 u16 proto;
9285
9286                 proto = nla_get_u16(
9287                         info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
9288                 settings->control_port_ethertype = cpu_to_be16(proto);
9289                 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
9290                     proto != ETH_P_PAE)
9291                         return -EINVAL;
9292                 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
9293                         settings->control_port_no_encrypt = true;
9294         } else
9295                 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
9296
9297         if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
9298                 int r = validate_pae_over_nl80211(rdev, info);
9299
9300                 if (r < 0)
9301                         return r;
9302
9303                 settings->control_port_over_nl80211 = true;
9304         }
9305
9306         if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
9307                 void *data;
9308                 int len, i;
9309
9310                 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
9311                 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
9312                 settings->n_ciphers_pairwise = len / sizeof(u32);
9313
9314                 if (len % sizeof(u32))
9315                         return -EINVAL;
9316
9317                 if (settings->n_ciphers_pairwise > cipher_limit)
9318                         return -EINVAL;
9319
9320                 memcpy(settings->ciphers_pairwise, data, len);
9321
9322                 for (i = 0; i < settings->n_ciphers_pairwise; i++)
9323                         if (!cfg80211_supported_cipher_suite(
9324                                         &rdev->wiphy,
9325                                         settings->ciphers_pairwise[i]))
9326                                 return -EINVAL;
9327         }
9328
9329         if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
9330                 settings->cipher_group =
9331                         nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
9332                 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
9333                                                      settings->cipher_group))
9334                         return -EINVAL;
9335         }
9336
9337         if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
9338                 settings->wpa_versions =
9339                         nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
9340                 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
9341                         return -EINVAL;
9342         }
9343
9344         if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
9345                 void *data;
9346                 int len;
9347
9348                 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
9349                 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
9350                 settings->n_akm_suites = len / sizeof(u32);
9351
9352                 if (len % sizeof(u32))
9353                         return -EINVAL;
9354
9355                 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES)
9356                         return -EINVAL;
9357
9358                 memcpy(settings->akm_suites, data, len);
9359         }
9360
9361         if (info->attrs[NL80211_ATTR_PMK]) {
9362                 if (nla_len(info->attrs[NL80211_ATTR_PMK]) != WLAN_PMK_LEN)
9363                         return -EINVAL;
9364                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
9365                                              NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_PSK))
9366                         return -EINVAL;
9367                 settings->psk = nla_data(info->attrs[NL80211_ATTR_PMK]);
9368         }
9369
9370         if (info->attrs[NL80211_ATTR_SAE_PASSWORD]) {
9371                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
9372                                              NL80211_EXT_FEATURE_SAE_OFFLOAD))
9373                         return -EINVAL;
9374                 settings->sae_pwd =
9375                         nla_data(info->attrs[NL80211_ATTR_SAE_PASSWORD]);
9376                 settings->sae_pwd_len =
9377                         nla_len(info->attrs[NL80211_ATTR_SAE_PASSWORD]);
9378         }
9379
9380         return 0;
9381 }
9382
9383 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
9384 {
9385         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9386         struct net_device *dev = info->user_ptr[1];
9387         struct ieee80211_channel *chan;
9388         struct cfg80211_assoc_request req = {};
9389         const u8 *bssid, *ssid;
9390         int err, ssid_len = 0;
9391
9392         if (dev->ieee80211_ptr->conn_owner_nlportid &&
9393             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
9394                 return -EPERM;
9395
9396         if (!info->attrs[NL80211_ATTR_MAC] ||
9397             !info->attrs[NL80211_ATTR_SSID] ||
9398             !info->attrs[NL80211_ATTR_WIPHY_FREQ])
9399                 return -EINVAL;
9400
9401         if (!rdev->ops->assoc)
9402                 return -EOPNOTSUPP;
9403
9404         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9405             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9406                 return -EOPNOTSUPP;
9407
9408         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9409
9410         chan = nl80211_get_valid_chan(&rdev->wiphy,
9411                                       info->attrs[NL80211_ATTR_WIPHY_FREQ]);
9412         if (!chan)
9413                 return -EINVAL;
9414
9415         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
9416         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
9417
9418         if (info->attrs[NL80211_ATTR_IE]) {
9419                 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9420                 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9421         }
9422
9423         if (info->attrs[NL80211_ATTR_USE_MFP]) {
9424                 enum nl80211_mfp mfp =
9425                         nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
9426                 if (mfp == NL80211_MFP_REQUIRED)
9427                         req.use_mfp = true;
9428                 else if (mfp != NL80211_MFP_NO)
9429                         return -EINVAL;
9430         }
9431
9432         if (info->attrs[NL80211_ATTR_PREV_BSSID])
9433                 req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
9434
9435         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
9436                 req.flags |= ASSOC_REQ_DISABLE_HT;
9437
9438         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
9439                 memcpy(&req.ht_capa_mask,
9440                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
9441                        sizeof(req.ht_capa_mask));
9442
9443         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
9444                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
9445                         return -EINVAL;
9446                 memcpy(&req.ht_capa,
9447                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
9448                        sizeof(req.ht_capa));
9449         }
9450
9451         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
9452                 req.flags |= ASSOC_REQ_DISABLE_VHT;
9453
9454         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
9455                 memcpy(&req.vht_capa_mask,
9456                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
9457                        sizeof(req.vht_capa_mask));
9458
9459         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
9460                 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
9461                         return -EINVAL;
9462                 memcpy(&req.vht_capa,
9463                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
9464                        sizeof(req.vht_capa));
9465         }
9466
9467         if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
9468                 if (!((rdev->wiphy.features &
9469                         NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
9470                        (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
9471                     !wiphy_ext_feature_isset(&rdev->wiphy,
9472                                              NL80211_EXT_FEATURE_RRM))
9473                         return -EINVAL;
9474                 req.flags |= ASSOC_REQ_USE_RRM;
9475         }
9476
9477         if (info->attrs[NL80211_ATTR_FILS_KEK]) {
9478                 req.fils_kek = nla_data(info->attrs[NL80211_ATTR_FILS_KEK]);
9479                 req.fils_kek_len = nla_len(info->attrs[NL80211_ATTR_FILS_KEK]);
9480                 if (!info->attrs[NL80211_ATTR_FILS_NONCES])
9481                         return -EINVAL;
9482                 req.fils_nonces =
9483                         nla_data(info->attrs[NL80211_ATTR_FILS_NONCES]);
9484         }
9485
9486         err = nl80211_crypto_settings(rdev, info, &req.crypto, 1);
9487         if (!err) {
9488                 wdev_lock(dev->ieee80211_ptr);
9489
9490                 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid,
9491                                           ssid, ssid_len, &req);
9492
9493                 if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
9494                         dev->ieee80211_ptr->conn_owner_nlportid =
9495                                 info->snd_portid;
9496                         memcpy(dev->ieee80211_ptr->disconnect_bssid,
9497                                bssid, ETH_ALEN);
9498                 }
9499
9500                 wdev_unlock(dev->ieee80211_ptr);
9501         }
9502
9503         return err;
9504 }
9505
9506 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
9507 {
9508         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9509         struct net_device *dev = info->user_ptr[1];
9510         const u8 *ie = NULL, *bssid;
9511         int ie_len = 0, err;
9512         u16 reason_code;
9513         bool local_state_change;
9514
9515         if (dev->ieee80211_ptr->conn_owner_nlportid &&
9516             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
9517                 return -EPERM;
9518
9519         if (!info->attrs[NL80211_ATTR_MAC])
9520                 return -EINVAL;
9521
9522         if (!info->attrs[NL80211_ATTR_REASON_CODE])
9523                 return -EINVAL;
9524
9525         if (!rdev->ops->deauth)
9526                 return -EOPNOTSUPP;
9527
9528         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9529             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9530                 return -EOPNOTSUPP;
9531
9532         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9533
9534         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
9535         if (reason_code == 0) {
9536                 /* Reason Code 0 is reserved */
9537                 return -EINVAL;
9538         }
9539
9540         if (info->attrs[NL80211_ATTR_IE]) {
9541                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9542                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9543         }
9544
9545         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
9546
9547         wdev_lock(dev->ieee80211_ptr);
9548         err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
9549                                    local_state_change);
9550         wdev_unlock(dev->ieee80211_ptr);
9551         return err;
9552 }
9553
9554 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
9555 {
9556         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9557         struct net_device *dev = info->user_ptr[1];
9558         const u8 *ie = NULL, *bssid;
9559         int ie_len = 0, err;
9560         u16 reason_code;
9561         bool local_state_change;
9562
9563         if (dev->ieee80211_ptr->conn_owner_nlportid &&
9564             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
9565                 return -EPERM;
9566
9567         if (!info->attrs[NL80211_ATTR_MAC])
9568                 return -EINVAL;
9569
9570         if (!info->attrs[NL80211_ATTR_REASON_CODE])
9571                 return -EINVAL;
9572
9573         if (!rdev->ops->disassoc)
9574                 return -EOPNOTSUPP;
9575
9576         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9577             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9578                 return -EOPNOTSUPP;
9579
9580         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9581
9582         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
9583         if (reason_code == 0) {
9584                 /* Reason Code 0 is reserved */
9585                 return -EINVAL;
9586         }
9587
9588         if (info->attrs[NL80211_ATTR_IE]) {
9589                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9590                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9591         }
9592
9593         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
9594
9595         wdev_lock(dev->ieee80211_ptr);
9596         err = cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
9597                                      local_state_change);
9598         wdev_unlock(dev->ieee80211_ptr);
9599         return err;
9600 }
9601
9602 static bool
9603 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
9604                          int mcast_rate[NUM_NL80211_BANDS],
9605                          int rateval)
9606 {
9607         struct wiphy *wiphy = &rdev->wiphy;
9608         bool found = false;
9609         int band, i;
9610
9611         for (band = 0; band < NUM_NL80211_BANDS; band++) {
9612                 struct ieee80211_supported_band *sband;
9613
9614                 sband = wiphy->bands[band];
9615                 if (!sband)
9616                         continue;
9617
9618                 for (i = 0; i < sband->n_bitrates; i++) {
9619                         if (sband->bitrates[i].bitrate == rateval) {
9620                                 mcast_rate[band] = i + 1;
9621                                 found = true;
9622                                 break;
9623                         }
9624                 }
9625         }
9626
9627         return found;
9628 }
9629
9630 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
9631 {
9632         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9633         struct net_device *dev = info->user_ptr[1];
9634         struct cfg80211_ibss_params ibss;
9635         struct wiphy *wiphy;
9636         struct cfg80211_cached_keys *connkeys = NULL;
9637         int err;
9638
9639         memset(&ibss, 0, sizeof(ibss));
9640
9641         if (!info->attrs[NL80211_ATTR_SSID] ||
9642             !nla_len(info->attrs[NL80211_ATTR_SSID]))
9643                 return -EINVAL;
9644
9645         ibss.beacon_interval = 100;
9646
9647         if (info->attrs[NL80211_ATTR_BEACON_INTERVAL])
9648                 ibss.beacon_interval =
9649                         nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
9650
9651         err = cfg80211_validate_beacon_int(rdev, NL80211_IFTYPE_ADHOC,
9652                                            ibss.beacon_interval);
9653         if (err)
9654                 return err;
9655
9656         if (!rdev->ops->join_ibss)
9657                 return -EOPNOTSUPP;
9658
9659         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
9660                 return -EOPNOTSUPP;
9661
9662         wiphy = &rdev->wiphy;
9663
9664         if (info->attrs[NL80211_ATTR_MAC]) {
9665                 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9666
9667                 if (!is_valid_ether_addr(ibss.bssid))
9668                         return -EINVAL;
9669         }
9670         ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
9671         ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
9672
9673         if (info->attrs[NL80211_ATTR_IE]) {
9674                 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9675                 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9676         }
9677
9678         err = nl80211_parse_chandef(rdev, info, &ibss.chandef);
9679         if (err)
9680                 return err;
9681
9682         if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef,
9683                                      NL80211_IFTYPE_ADHOC))
9684                 return -EINVAL;
9685
9686         switch (ibss.chandef.width) {
9687         case NL80211_CHAN_WIDTH_5:
9688         case NL80211_CHAN_WIDTH_10:
9689         case NL80211_CHAN_WIDTH_20_NOHT:
9690                 break;
9691         case NL80211_CHAN_WIDTH_20:
9692         case NL80211_CHAN_WIDTH_40:
9693                 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
9694                         return -EINVAL;
9695                 break;
9696         case NL80211_CHAN_WIDTH_80:
9697         case NL80211_CHAN_WIDTH_80P80:
9698         case NL80211_CHAN_WIDTH_160:
9699                 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
9700                         return -EINVAL;
9701                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
9702                                              NL80211_EXT_FEATURE_VHT_IBSS))
9703                         return -EINVAL;
9704                 break;
9705         default:
9706                 return -EINVAL;
9707         }
9708
9709         ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
9710         ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
9711
9712         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
9713                 u8 *rates =
9714                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
9715                 int n_rates =
9716                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
9717                 struct ieee80211_supported_band *sband =
9718                         wiphy->bands[ibss.chandef.chan->band];
9719
9720                 err = ieee80211_get_ratemask(sband, rates, n_rates,
9721                                              &ibss.basic_rates);
9722                 if (err)
9723                         return err;
9724         }
9725
9726         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
9727                 memcpy(&ibss.ht_capa_mask,
9728                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
9729                        sizeof(ibss.ht_capa_mask));
9730
9731         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
9732                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
9733                         return -EINVAL;
9734                 memcpy(&ibss.ht_capa,
9735                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
9736                        sizeof(ibss.ht_capa));
9737         }
9738
9739         if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
9740             !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
9741                         nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
9742                 return -EINVAL;
9743
9744         if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
9745                 bool no_ht = false;
9746
9747                 connkeys = nl80211_parse_connkeys(rdev, info, &no_ht);
9748                 if (IS_ERR(connkeys))
9749                         return PTR_ERR(connkeys);
9750
9751                 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) &&
9752                     no_ht) {
9753                         kzfree(connkeys);
9754                         return -EINVAL;
9755                 }
9756         }
9757
9758         ibss.control_port =
9759                 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]);
9760
9761         if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
9762                 int r = validate_pae_over_nl80211(rdev, info);
9763
9764                 if (r < 0) {
9765                         kzfree(connkeys);
9766                         return r;
9767                 }
9768
9769                 ibss.control_port_over_nl80211 = true;
9770         }
9771
9772         ibss.userspace_handles_dfs =
9773                 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
9774
9775         wdev_lock(dev->ieee80211_ptr);
9776         err = __cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
9777         if (err)
9778                 kzfree(connkeys);
9779         else if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
9780                 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
9781         wdev_unlock(dev->ieee80211_ptr);
9782
9783         return err;
9784 }
9785
9786 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
9787 {
9788         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9789         struct net_device *dev = info->user_ptr[1];
9790
9791         if (!rdev->ops->leave_ibss)
9792                 return -EOPNOTSUPP;
9793
9794         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
9795                 return -EOPNOTSUPP;
9796
9797         return cfg80211_leave_ibss(rdev, dev, false);
9798 }
9799
9800 static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info)
9801 {
9802         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9803         struct net_device *dev = info->user_ptr[1];
9804         int mcast_rate[NUM_NL80211_BANDS];
9805         u32 nla_rate;
9806         int err;
9807
9808         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
9809             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
9810             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_OCB)
9811                 return -EOPNOTSUPP;
9812
9813         if (!rdev->ops->set_mcast_rate)
9814                 return -EOPNOTSUPP;
9815
9816         memset(mcast_rate, 0, sizeof(mcast_rate));
9817
9818         if (!info->attrs[NL80211_ATTR_MCAST_RATE])
9819                 return -EINVAL;
9820
9821         nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]);
9822         if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate))
9823                 return -EINVAL;
9824
9825         err = rdev_set_mcast_rate(rdev, dev, mcast_rate);
9826
9827         return err;
9828 }
9829
9830 static struct sk_buff *
9831 __cfg80211_alloc_vendor_skb(struct cfg80211_registered_device *rdev,
9832                             struct wireless_dev *wdev, int approxlen,
9833                             u32 portid, u32 seq, enum nl80211_commands cmd,
9834                             enum nl80211_attrs attr,
9835                             const struct nl80211_vendor_cmd_info *info,
9836                             gfp_t gfp)
9837 {
9838         struct sk_buff *skb;
9839         void *hdr;
9840         struct nlattr *data;
9841
9842         skb = nlmsg_new(approxlen + 100, gfp);
9843         if (!skb)
9844                 return NULL;
9845
9846         hdr = nl80211hdr_put(skb, portid, seq, 0, cmd);
9847         if (!hdr) {
9848                 kfree_skb(skb);
9849                 return NULL;
9850         }
9851
9852         if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
9853                 goto nla_put_failure;
9854
9855         if (info) {
9856                 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_ID,
9857                                 info->vendor_id))
9858                         goto nla_put_failure;
9859                 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_SUBCMD,
9860                                 info->subcmd))
9861                         goto nla_put_failure;
9862         }
9863
9864         if (wdev) {
9865                 if (nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
9866                                       wdev_id(wdev), NL80211_ATTR_PAD))
9867                         goto nla_put_failure;
9868                 if (wdev->netdev &&
9869                     nla_put_u32(skb, NL80211_ATTR_IFINDEX,
9870                                 wdev->netdev->ifindex))
9871                         goto nla_put_failure;
9872         }
9873
9874         data = nla_nest_start_noflag(skb, attr);
9875         if (!data)
9876                 goto nla_put_failure;
9877
9878         ((void **)skb->cb)[0] = rdev;
9879         ((void **)skb->cb)[1] = hdr;
9880         ((void **)skb->cb)[2] = data;
9881
9882         return skb;
9883
9884  nla_put_failure:
9885         kfree_skb(skb);
9886         return NULL;
9887 }
9888
9889 struct sk_buff *__cfg80211_alloc_event_skb(struct wiphy *wiphy,
9890                                            struct wireless_dev *wdev,
9891                                            enum nl80211_commands cmd,
9892                                            enum nl80211_attrs attr,
9893                                            unsigned int portid,
9894                                            int vendor_event_idx,
9895                                            int approxlen, gfp_t gfp)
9896 {
9897         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
9898         const struct nl80211_vendor_cmd_info *info;
9899
9900         switch (cmd) {
9901         case NL80211_CMD_TESTMODE:
9902                 if (WARN_ON(vendor_event_idx != -1))
9903                         return NULL;
9904                 info = NULL;
9905                 break;
9906         case NL80211_CMD_VENDOR:
9907                 if (WARN_ON(vendor_event_idx < 0 ||
9908                             vendor_event_idx >= wiphy->n_vendor_events))
9909                         return NULL;
9910                 info = &wiphy->vendor_events[vendor_event_idx];
9911                 break;
9912         default:
9913                 WARN_ON(1);
9914                 return NULL;
9915         }
9916
9917         return __cfg80211_alloc_vendor_skb(rdev, wdev, approxlen, portid, 0,
9918                                            cmd, attr, info, gfp);
9919 }
9920 EXPORT_SYMBOL(__cfg80211_alloc_event_skb);
9921
9922 void __cfg80211_send_event_skb(struct sk_buff *skb, gfp_t gfp)
9923 {
9924         struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
9925         void *hdr = ((void **)skb->cb)[1];
9926         struct nlmsghdr *nlhdr = nlmsg_hdr(skb);
9927         struct nlattr *data = ((void **)skb->cb)[2];
9928         enum nl80211_multicast_groups mcgrp = NL80211_MCGRP_TESTMODE;
9929
9930         /* clear CB data for netlink core to own from now on */
9931         memset(skb->cb, 0, sizeof(skb->cb));
9932
9933         nla_nest_end(skb, data);
9934         genlmsg_end(skb, hdr);
9935
9936         if (nlhdr->nlmsg_pid) {
9937                 genlmsg_unicast(wiphy_net(&rdev->wiphy), skb,
9938                                 nlhdr->nlmsg_pid);
9939         } else {
9940                 if (data->nla_type == NL80211_ATTR_VENDOR_DATA)
9941                         mcgrp = NL80211_MCGRP_VENDOR;
9942
9943                 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
9944                                         skb, 0, mcgrp, gfp);
9945         }
9946 }
9947 EXPORT_SYMBOL(__cfg80211_send_event_skb);
9948
9949 #ifdef CONFIG_NL80211_TESTMODE
9950 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
9951 {
9952         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9953         struct wireless_dev *wdev =
9954                 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
9955         int err;
9956
9957         if (!rdev->ops->testmode_cmd)
9958                 return -EOPNOTSUPP;
9959
9960         if (IS_ERR(wdev)) {
9961                 err = PTR_ERR(wdev);
9962                 if (err != -EINVAL)
9963                         return err;
9964                 wdev = NULL;
9965         } else if (wdev->wiphy != &rdev->wiphy) {
9966                 return -EINVAL;
9967         }
9968
9969         if (!info->attrs[NL80211_ATTR_TESTDATA])
9970                 return -EINVAL;
9971
9972         rdev->cur_cmd_info = info;
9973         err = rdev_testmode_cmd(rdev, wdev,
9974                                 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
9975                                 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
9976         rdev->cur_cmd_info = NULL;
9977
9978         return err;
9979 }
9980
9981 static int nl80211_testmode_dump(struct sk_buff *skb,
9982                                  struct netlink_callback *cb)
9983 {
9984         struct cfg80211_registered_device *rdev;
9985         struct nlattr **attrbuf = NULL;
9986         int err;
9987         long phy_idx;
9988         void *data = NULL;
9989         int data_len = 0;
9990
9991         rtnl_lock();
9992
9993         if (cb->args[0]) {
9994                 /*
9995                  * 0 is a valid index, but not valid for args[0],
9996                  * so we need to offset by 1.
9997                  */
9998                 phy_idx = cb->args[0] - 1;
9999
10000                 rdev = cfg80211_rdev_by_wiphy_idx(phy_idx);
10001                 if (!rdev) {
10002                         err = -ENOENT;
10003                         goto out_err;
10004                 }
10005         } else {
10006                 attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf),
10007                                   GFP_KERNEL);
10008                 if (!attrbuf) {
10009                         err = -ENOMEM;
10010                         goto out_err;
10011                 }
10012
10013                 err = nlmsg_parse_deprecated(cb->nlh,
10014                                              GENL_HDRLEN + nl80211_fam.hdrsize,
10015                                              attrbuf, nl80211_fam.maxattr,
10016                                              nl80211_policy, NULL);
10017                 if (err)
10018                         goto out_err;
10019
10020                 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf);
10021                 if (IS_ERR(rdev)) {
10022                         err = PTR_ERR(rdev);
10023                         goto out_err;
10024                 }
10025                 phy_idx = rdev->wiphy_idx;
10026
10027                 if (attrbuf[NL80211_ATTR_TESTDATA])
10028                         cb->args[1] = (long)attrbuf[NL80211_ATTR_TESTDATA];
10029         }
10030
10031         if (cb->args[1]) {
10032                 data = nla_data((void *)cb->args[1]);
10033                 data_len = nla_len((void *)cb->args[1]);
10034         }
10035
10036         if (!rdev->ops->testmode_dump) {
10037                 err = -EOPNOTSUPP;
10038                 goto out_err;
10039         }
10040
10041         while (1) {
10042                 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
10043                                            cb->nlh->nlmsg_seq, NLM_F_MULTI,
10044                                            NL80211_CMD_TESTMODE);
10045                 struct nlattr *tmdata;
10046
10047                 if (!hdr)
10048                         break;
10049
10050                 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) {
10051                         genlmsg_cancel(skb, hdr);
10052                         break;
10053                 }
10054
10055                 tmdata = nla_nest_start_noflag(skb, NL80211_ATTR_TESTDATA);
10056                 if (!tmdata) {
10057                         genlmsg_cancel(skb, hdr);
10058                         break;
10059                 }
10060                 err = rdev_testmode_dump(rdev, skb, cb, data, data_len);
10061                 nla_nest_end(skb, tmdata);
10062
10063                 if (err == -ENOBUFS || err == -ENOENT) {
10064                         genlmsg_cancel(skb, hdr);
10065                         break;
10066                 } else if (err) {
10067                         genlmsg_cancel(skb, hdr);
10068                         goto out_err;
10069                 }
10070
10071                 genlmsg_end(skb, hdr);
10072         }
10073
10074         err = skb->len;
10075         /* see above */
10076         cb->args[0] = phy_idx + 1;
10077  out_err:
10078         kfree(attrbuf);
10079         rtnl_unlock();
10080         return err;
10081 }
10082 #endif
10083
10084 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
10085 {
10086         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10087         struct net_device *dev = info->user_ptr[1];
10088         struct cfg80211_connect_params connect;
10089         struct wiphy *wiphy;
10090         struct cfg80211_cached_keys *connkeys = NULL;
10091         int err;
10092
10093         memset(&connect, 0, sizeof(connect));
10094
10095         if (!info->attrs[NL80211_ATTR_SSID] ||
10096             !nla_len(info->attrs[NL80211_ATTR_SSID]))
10097                 return -EINVAL;
10098
10099         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
10100                 connect.auth_type =
10101                         nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
10102                 if (!nl80211_valid_auth_type(rdev, connect.auth_type,
10103                                              NL80211_CMD_CONNECT))
10104                         return -EINVAL;
10105         } else
10106                 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
10107
10108         connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
10109
10110         if (info->attrs[NL80211_ATTR_WANT_1X_4WAY_HS] &&
10111             !wiphy_ext_feature_isset(&rdev->wiphy,
10112                                      NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
10113                 return -EINVAL;
10114         connect.want_1x = info->attrs[NL80211_ATTR_WANT_1X_4WAY_HS];
10115
10116         err = nl80211_crypto_settings(rdev, info, &connect.crypto,
10117                                       NL80211_MAX_NR_CIPHER_SUITES);
10118         if (err)
10119                 return err;
10120
10121         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
10122             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
10123                 return -EOPNOTSUPP;
10124
10125         wiphy = &rdev->wiphy;
10126
10127         connect.bg_scan_period = -1;
10128         if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] &&
10129                 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) {
10130                 connect.bg_scan_period =
10131                         nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]);
10132         }
10133
10134         if (info->attrs[NL80211_ATTR_MAC])
10135                 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
10136         else if (info->attrs[NL80211_ATTR_MAC_HINT])
10137                 connect.bssid_hint =
10138                         nla_data(info->attrs[NL80211_ATTR_MAC_HINT]);
10139         connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
10140         connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
10141
10142         if (info->attrs[NL80211_ATTR_IE]) {
10143                 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
10144                 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
10145         }
10146
10147         if (info->attrs[NL80211_ATTR_USE_MFP]) {
10148                 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
10149                 if (connect.mfp == NL80211_MFP_OPTIONAL &&
10150                     !wiphy_ext_feature_isset(&rdev->wiphy,
10151                                              NL80211_EXT_FEATURE_MFP_OPTIONAL))
10152                         return -EOPNOTSUPP;
10153         } else {
10154                 connect.mfp = NL80211_MFP_NO;
10155         }
10156
10157         if (info->attrs[NL80211_ATTR_PREV_BSSID])
10158                 connect.prev_bssid =
10159                         nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
10160
10161         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
10162                 connect.channel = nl80211_get_valid_chan(
10163                         wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ]);
10164                 if (!connect.channel)
10165                         return -EINVAL;
10166         } else if (info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]) {
10167                 connect.channel_hint = nl80211_get_valid_chan(
10168                         wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]);
10169                 if (!connect.channel_hint)
10170                         return -EINVAL;
10171         }
10172
10173         if (info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]) {
10174                 connect.edmg.channels =
10175                       nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]);
10176
10177                 if (info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG])
10178                         connect.edmg.bw_config =
10179                                 nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG]);
10180         }
10181
10182         if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
10183                 connkeys = nl80211_parse_connkeys(rdev, info, NULL);
10184                 if (IS_ERR(connkeys))
10185                         return PTR_ERR(connkeys);
10186         }
10187
10188         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
10189                 connect.flags |= ASSOC_REQ_DISABLE_HT;
10190
10191         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
10192                 memcpy(&connect.ht_capa_mask,
10193                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
10194                        sizeof(connect.ht_capa_mask));
10195
10196         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
10197                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) {
10198                         kzfree(connkeys);
10199                         return -EINVAL;
10200                 }
10201                 memcpy(&connect.ht_capa,
10202                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
10203                        sizeof(connect.ht_capa));
10204         }
10205
10206         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
10207                 connect.flags |= ASSOC_REQ_DISABLE_VHT;
10208
10209         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
10210                 memcpy(&connect.vht_capa_mask,
10211                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
10212                        sizeof(connect.vht_capa_mask));
10213
10214         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
10215                 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) {
10216                         kzfree(connkeys);
10217                         return -EINVAL;
10218                 }
10219                 memcpy(&connect.vht_capa,
10220                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
10221                        sizeof(connect.vht_capa));
10222         }
10223
10224         if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
10225                 if (!((rdev->wiphy.features &
10226                         NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
10227                        (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
10228                     !wiphy_ext_feature_isset(&rdev->wiphy,
10229                                              NL80211_EXT_FEATURE_RRM)) {
10230                         kzfree(connkeys);
10231                         return -EINVAL;
10232                 }
10233                 connect.flags |= ASSOC_REQ_USE_RRM;
10234         }
10235
10236         connect.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
10237         if (connect.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ]) {
10238                 kzfree(connkeys);
10239                 return -EOPNOTSUPP;
10240         }
10241
10242         if (info->attrs[NL80211_ATTR_BSS_SELECT]) {
10243                 /* bss selection makes no sense if bssid is set */
10244                 if (connect.bssid) {
10245                         kzfree(connkeys);
10246                         return -EINVAL;
10247                 }
10248
10249                 err = parse_bss_select(info->attrs[NL80211_ATTR_BSS_SELECT],
10250                                        wiphy, &connect.bss_select);
10251                 if (err) {
10252                         kzfree(connkeys);
10253                         return err;
10254                 }
10255         }
10256
10257         if (wiphy_ext_feature_isset(&rdev->wiphy,
10258                                     NL80211_EXT_FEATURE_FILS_SK_OFFLOAD) &&
10259             info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] &&
10260             info->attrs[NL80211_ATTR_FILS_ERP_REALM] &&
10261             info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] &&
10262             info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
10263                 connect.fils_erp_username =
10264                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
10265                 connect.fils_erp_username_len =
10266                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
10267                 connect.fils_erp_realm =
10268                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
10269                 connect.fils_erp_realm_len =
10270                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
10271                 connect.fils_erp_next_seq_num =
10272                         nla_get_u16(
10273                            info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM]);
10274                 connect.fils_erp_rrk =
10275                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
10276                 connect.fils_erp_rrk_len =
10277                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
10278         } else if (info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] ||
10279                    info->attrs[NL80211_ATTR_FILS_ERP_REALM] ||
10280                    info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] ||
10281                    info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
10282                 kzfree(connkeys);
10283                 return -EINVAL;
10284         }
10285
10286         if (nla_get_flag(info->attrs[NL80211_ATTR_EXTERNAL_AUTH_SUPPORT])) {
10287                 if (!info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
10288                         kzfree(connkeys);
10289                         GENL_SET_ERR_MSG(info,
10290                                          "external auth requires connection ownership");
10291                         return -EINVAL;
10292                 }
10293                 connect.flags |= CONNECT_REQ_EXTERNAL_AUTH_SUPPORT;
10294         }
10295
10296         wdev_lock(dev->ieee80211_ptr);
10297
10298         err = cfg80211_connect(rdev, dev, &connect, connkeys,
10299                                connect.prev_bssid);
10300         if (err)
10301                 kzfree(connkeys);
10302
10303         if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
10304                 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
10305                 if (connect.bssid)
10306                         memcpy(dev->ieee80211_ptr->disconnect_bssid,
10307                                connect.bssid, ETH_ALEN);
10308                 else
10309                         memset(dev->ieee80211_ptr->disconnect_bssid,
10310                                0, ETH_ALEN);
10311         }
10312
10313         wdev_unlock(dev->ieee80211_ptr);
10314
10315         return err;
10316 }
10317
10318 static int nl80211_update_connect_params(struct sk_buff *skb,
10319                                          struct genl_info *info)
10320 {
10321         struct cfg80211_connect_params connect = {};
10322         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10323         struct net_device *dev = info->user_ptr[1];
10324         struct wireless_dev *wdev = dev->ieee80211_ptr;
10325         bool fils_sk_offload;
10326         u32 auth_type;
10327         u32 changed = 0;
10328         int ret;
10329
10330         if (!rdev->ops->update_connect_params)
10331                 return -EOPNOTSUPP;
10332
10333         if (info->attrs[NL80211_ATTR_IE]) {
10334                 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
10335                 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
10336                 changed |= UPDATE_ASSOC_IES;
10337         }
10338
10339         fils_sk_offload = wiphy_ext_feature_isset(&rdev->wiphy,
10340                                                   NL80211_EXT_FEATURE_FILS_SK_OFFLOAD);
10341
10342         /*
10343          * when driver supports fils-sk offload all attributes must be
10344          * provided. So the else covers "fils-sk-not-all" and
10345          * "no-fils-sk-any".
10346          */
10347         if (fils_sk_offload &&
10348             info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] &&
10349             info->attrs[NL80211_ATTR_FILS_ERP_REALM] &&
10350             info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] &&
10351             info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
10352                 connect.fils_erp_username =
10353                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
10354                 connect.fils_erp_username_len =
10355                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
10356                 connect.fils_erp_realm =
10357                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
10358                 connect.fils_erp_realm_len =
10359                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
10360                 connect.fils_erp_next_seq_num =
10361                         nla_get_u16(
10362                            info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM]);
10363                 connect.fils_erp_rrk =
10364                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
10365                 connect.fils_erp_rrk_len =
10366                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
10367                 changed |= UPDATE_FILS_ERP_INFO;
10368         } else if (info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] ||
10369                    info->attrs[NL80211_ATTR_FILS_ERP_REALM] ||
10370                    info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] ||
10371                    info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
10372                 return -EINVAL;
10373         }
10374
10375         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
10376                 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
10377                 if (!nl80211_valid_auth_type(rdev, auth_type,
10378                                              NL80211_CMD_CONNECT))
10379                         return -EINVAL;
10380
10381                 if (auth_type == NL80211_AUTHTYPE_FILS_SK &&
10382                     fils_sk_offload && !(changed & UPDATE_FILS_ERP_INFO))
10383                         return -EINVAL;
10384
10385                 connect.auth_type = auth_type;
10386                 changed |= UPDATE_AUTH_TYPE;
10387         }
10388
10389         wdev_lock(dev->ieee80211_ptr);
10390         if (!wdev->current_bss)
10391                 ret = -ENOLINK;
10392         else
10393                 ret = rdev_update_connect_params(rdev, dev, &connect, changed);
10394         wdev_unlock(dev->ieee80211_ptr);
10395
10396         return ret;
10397 }
10398
10399 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
10400 {
10401         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10402         struct net_device *dev = info->user_ptr[1];
10403         u16 reason;
10404         int ret;
10405
10406         if (dev->ieee80211_ptr->conn_owner_nlportid &&
10407             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
10408                 return -EPERM;
10409
10410         if (!info->attrs[NL80211_ATTR_REASON_CODE])
10411                 reason = WLAN_REASON_DEAUTH_LEAVING;
10412         else
10413                 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
10414
10415         if (reason == 0)
10416                 return -EINVAL;
10417
10418         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
10419             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
10420                 return -EOPNOTSUPP;
10421
10422         wdev_lock(dev->ieee80211_ptr);
10423         ret = cfg80211_disconnect(rdev, dev, reason, true);
10424         wdev_unlock(dev->ieee80211_ptr);
10425         return ret;
10426 }
10427
10428 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
10429 {
10430         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10431         struct net *net;
10432         int err;
10433
10434         if (info->attrs[NL80211_ATTR_PID]) {
10435                 u32 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
10436
10437                 net = get_net_ns_by_pid(pid);
10438         } else if (info->attrs[NL80211_ATTR_NETNS_FD]) {
10439                 u32 fd = nla_get_u32(info->attrs[NL80211_ATTR_NETNS_FD]);
10440
10441                 net = get_net_ns_by_fd(fd);
10442         } else {
10443                 return -EINVAL;
10444         }
10445
10446         if (IS_ERR(net))
10447                 return PTR_ERR(net);
10448
10449         err = 0;
10450
10451         /* check if anything to do */
10452         if (!net_eq(wiphy_net(&rdev->wiphy), net))
10453                 err = cfg80211_switch_netns(rdev, net);
10454
10455         put_net(net);
10456         return err;
10457 }
10458
10459 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
10460 {
10461         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10462         int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
10463                         struct cfg80211_pmksa *pmksa) = NULL;
10464         struct net_device *dev = info->user_ptr[1];
10465         struct cfg80211_pmksa pmksa;
10466
10467         memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
10468
10469         if (!info->attrs[NL80211_ATTR_PMKID])
10470                 return -EINVAL;
10471
10472         pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
10473
10474         if (info->attrs[NL80211_ATTR_MAC]) {
10475                 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
10476         } else if (info->attrs[NL80211_ATTR_SSID] &&
10477                    info->attrs[NL80211_ATTR_FILS_CACHE_ID] &&
10478                    (info->genlhdr->cmd == NL80211_CMD_DEL_PMKSA ||
10479                     info->attrs[NL80211_ATTR_PMK])) {
10480                 pmksa.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
10481                 pmksa.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
10482                 pmksa.cache_id =
10483                         nla_data(info->attrs[NL80211_ATTR_FILS_CACHE_ID]);
10484         } else {
10485                 return -EINVAL;
10486         }
10487         if (info->attrs[NL80211_ATTR_PMK]) {
10488                 pmksa.pmk = nla_data(info->attrs[NL80211_ATTR_PMK]);
10489                 pmksa.pmk_len = nla_len(info->attrs[NL80211_ATTR_PMK]);
10490         }
10491
10492         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
10493             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT &&
10494             !(dev->ieee80211_ptr->iftype == NL80211_IFTYPE_AP &&
10495               wiphy_ext_feature_isset(&rdev->wiphy,
10496                                       NL80211_EXT_FEATURE_AP_PMKSA_CACHING)))
10497                 return -EOPNOTSUPP;
10498
10499         switch (info->genlhdr->cmd) {
10500         case NL80211_CMD_SET_PMKSA:
10501                 rdev_ops = rdev->ops->set_pmksa;
10502                 break;
10503         case NL80211_CMD_DEL_PMKSA:
10504                 rdev_ops = rdev->ops->del_pmksa;
10505                 break;
10506         default:
10507                 WARN_ON(1);
10508                 break;
10509         }
10510
10511         if (!rdev_ops)
10512                 return -EOPNOTSUPP;
10513
10514         return rdev_ops(&rdev->wiphy, dev, &pmksa);
10515 }
10516
10517 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
10518 {
10519         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10520         struct net_device *dev = info->user_ptr[1];
10521
10522         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
10523             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
10524                 return -EOPNOTSUPP;
10525
10526         if (!rdev->ops->flush_pmksa)
10527                 return -EOPNOTSUPP;
10528
10529         return rdev_flush_pmksa(rdev, dev);
10530 }
10531
10532 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
10533 {
10534         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10535         struct net_device *dev = info->user_ptr[1];
10536         u8 action_code, dialog_token;
10537         u32 peer_capability = 0;
10538         u16 status_code;
10539         u8 *peer;
10540         bool initiator;
10541
10542         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
10543             !rdev->ops->tdls_mgmt)
10544                 return -EOPNOTSUPP;
10545
10546         if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
10547             !info->attrs[NL80211_ATTR_STATUS_CODE] ||
10548             !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
10549             !info->attrs[NL80211_ATTR_IE] ||
10550             !info->attrs[NL80211_ATTR_MAC])
10551                 return -EINVAL;
10552
10553         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
10554         action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
10555         status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
10556         dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
10557         initiator = nla_get_flag(info->attrs[NL80211_ATTR_TDLS_INITIATOR]);
10558         if (info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY])
10559                 peer_capability =
10560                         nla_get_u32(info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY]);
10561
10562         return rdev_tdls_mgmt(rdev, dev, peer, action_code,
10563                               dialog_token, status_code, peer_capability,
10564                               initiator,
10565                               nla_data(info->attrs[NL80211_ATTR_IE]),
10566                               nla_len(info->attrs[NL80211_ATTR_IE]));
10567 }
10568
10569 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
10570 {
10571         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10572         struct net_device *dev = info->user_ptr[1];
10573         enum nl80211_tdls_operation operation;
10574         u8 *peer;
10575
10576         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
10577             !rdev->ops->tdls_oper)
10578                 return -EOPNOTSUPP;
10579
10580         if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
10581             !info->attrs[NL80211_ATTR_MAC])
10582                 return -EINVAL;
10583
10584         operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
10585         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
10586
10587         return rdev_tdls_oper(rdev, dev, peer, operation);
10588 }
10589
10590 static int nl80211_remain_on_channel(struct sk_buff *skb,
10591                                      struct genl_info *info)
10592 {
10593         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10594         struct wireless_dev *wdev = info->user_ptr[1];
10595         struct cfg80211_chan_def chandef;
10596         const struct cfg80211_chan_def *compat_chandef;
10597         struct sk_buff *msg;
10598         void *hdr;
10599         u64 cookie;
10600         u32 duration;
10601         int err;
10602
10603         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
10604             !info->attrs[NL80211_ATTR_DURATION])
10605                 return -EINVAL;
10606
10607         duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
10608
10609         if (!rdev->ops->remain_on_channel ||
10610             !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL))
10611                 return -EOPNOTSUPP;
10612
10613         /*
10614          * We should be on that channel for at least a minimum amount of
10615          * time (10ms) but no longer than the driver supports.
10616          */
10617         if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
10618             duration > rdev->wiphy.max_remain_on_channel_duration)
10619                 return -EINVAL;
10620
10621         err = nl80211_parse_chandef(rdev, info, &chandef);
10622         if (err)
10623                 return err;
10624
10625         wdev_lock(wdev);
10626         if (!cfg80211_off_channel_oper_allowed(wdev) &&
10627             !cfg80211_chandef_identical(&wdev->chandef, &chandef)) {
10628                 compat_chandef = cfg80211_chandef_compatible(&wdev->chandef,
10629                                                              &chandef);
10630                 if (compat_chandef != &chandef) {
10631                         wdev_unlock(wdev);
10632                         return -EBUSY;
10633                 }
10634         }
10635         wdev_unlock(wdev);
10636
10637         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10638         if (!msg)
10639                 return -ENOMEM;
10640
10641         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
10642                              NL80211_CMD_REMAIN_ON_CHANNEL);
10643         if (!hdr) {
10644                 err = -ENOBUFS;
10645                 goto free_msg;
10646         }
10647
10648         err = rdev_remain_on_channel(rdev, wdev, chandef.chan,
10649                                      duration, &cookie);
10650
10651         if (err)
10652                 goto free_msg;
10653
10654         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
10655                               NL80211_ATTR_PAD))
10656                 goto nla_put_failure;
10657
10658         genlmsg_end(msg, hdr);
10659
10660         return genlmsg_reply(msg, info);
10661
10662  nla_put_failure:
10663         err = -ENOBUFS;
10664  free_msg:
10665         nlmsg_free(msg);
10666         return err;
10667 }
10668
10669 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
10670                                             struct genl_info *info)
10671 {
10672         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10673         struct wireless_dev *wdev = info->user_ptr[1];
10674         u64 cookie;
10675
10676         if (!info->attrs[NL80211_ATTR_COOKIE])
10677                 return -EINVAL;
10678
10679         if (!rdev->ops->cancel_remain_on_channel)
10680                 return -EOPNOTSUPP;
10681
10682         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
10683
10684         return rdev_cancel_remain_on_channel(rdev, wdev, cookie);
10685 }
10686
10687 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
10688                                        struct genl_info *info)
10689 {
10690         struct cfg80211_bitrate_mask mask;
10691         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10692         struct net_device *dev = info->user_ptr[1];
10693         int err;
10694
10695         if (!rdev->ops->set_bitrate_mask)
10696                 return -EOPNOTSUPP;
10697
10698         err = nl80211_parse_tx_bitrate_mask(info, &mask);
10699         if (err)
10700                 return err;
10701
10702         return rdev_set_bitrate_mask(rdev, dev, NULL, &mask);
10703 }
10704
10705 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
10706 {
10707         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10708         struct wireless_dev *wdev = info->user_ptr[1];
10709         u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
10710
10711         if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
10712                 return -EINVAL;
10713
10714         if (info->attrs[NL80211_ATTR_FRAME_TYPE])
10715                 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
10716
10717         switch (wdev->iftype) {
10718         case NL80211_IFTYPE_STATION:
10719         case NL80211_IFTYPE_ADHOC:
10720         case NL80211_IFTYPE_P2P_CLIENT:
10721         case NL80211_IFTYPE_AP:
10722         case NL80211_IFTYPE_AP_VLAN:
10723         case NL80211_IFTYPE_MESH_POINT:
10724         case NL80211_IFTYPE_P2P_GO:
10725         case NL80211_IFTYPE_P2P_DEVICE:
10726                 break;
10727         case NL80211_IFTYPE_NAN:
10728         default:
10729                 return -EOPNOTSUPP;
10730         }
10731
10732         /* not much point in registering if we can't reply */
10733         if (!rdev->ops->mgmt_tx)
10734                 return -EOPNOTSUPP;
10735
10736         return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type,
10737                                            nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
10738                                            nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]),
10739                                            info->extack);
10740 }
10741
10742 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
10743 {
10744         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10745         struct wireless_dev *wdev = info->user_ptr[1];
10746         struct cfg80211_chan_def chandef;
10747         int err;
10748         void *hdr = NULL;
10749         u64 cookie;
10750         struct sk_buff *msg = NULL;
10751         struct cfg80211_mgmt_tx_params params = {
10752                 .dont_wait_for_ack =
10753                         info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK],
10754         };
10755
10756         if (!info->attrs[NL80211_ATTR_FRAME])
10757                 return -EINVAL;
10758
10759         if (!rdev->ops->mgmt_tx)
10760                 return -EOPNOTSUPP;
10761
10762         switch (wdev->iftype) {
10763         case NL80211_IFTYPE_P2P_DEVICE:
10764                 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
10765                         return -EINVAL;
10766         case NL80211_IFTYPE_STATION:
10767         case NL80211_IFTYPE_ADHOC:
10768         case NL80211_IFTYPE_P2P_CLIENT:
10769         case NL80211_IFTYPE_AP:
10770         case NL80211_IFTYPE_AP_VLAN:
10771         case NL80211_IFTYPE_MESH_POINT:
10772         case NL80211_IFTYPE_P2P_GO:
10773                 break;
10774         case NL80211_IFTYPE_NAN:
10775         default:
10776                 return -EOPNOTSUPP;
10777         }
10778
10779         if (info->attrs[NL80211_ATTR_DURATION]) {
10780                 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
10781                         return -EINVAL;
10782                 params.wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
10783
10784                 /*
10785                  * We should wait on the channel for at least a minimum amount
10786                  * of time (10ms) but no longer than the driver supports.
10787                  */
10788                 if (params.wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
10789                     params.wait > rdev->wiphy.max_remain_on_channel_duration)
10790                         return -EINVAL;
10791         }
10792
10793         params.offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
10794
10795         if (params.offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
10796                 return -EINVAL;
10797
10798         params.no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
10799
10800         /* get the channel if any has been specified, otherwise pass NULL to
10801          * the driver. The latter will use the current one
10802          */
10803         chandef.chan = NULL;
10804         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
10805                 err = nl80211_parse_chandef(rdev, info, &chandef);
10806                 if (err)
10807                         return err;
10808         }
10809
10810         if (!chandef.chan && params.offchan)
10811                 return -EINVAL;
10812
10813         wdev_lock(wdev);
10814         if (params.offchan && !cfg80211_off_channel_oper_allowed(wdev)) {
10815                 wdev_unlock(wdev);
10816                 return -EBUSY;
10817         }
10818         wdev_unlock(wdev);
10819
10820         params.buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
10821         params.len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
10822
10823         if (info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]) {
10824                 int len = nla_len(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
10825                 int i;
10826
10827                 if (len % sizeof(u16))
10828                         return -EINVAL;
10829
10830                 params.n_csa_offsets = len / sizeof(u16);
10831                 params.csa_offsets =
10832                         nla_data(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
10833
10834                 /* check that all the offsets fit the frame */
10835                 for (i = 0; i < params.n_csa_offsets; i++) {
10836                         if (params.csa_offsets[i] >= params.len)
10837                                 return -EINVAL;
10838                 }
10839         }
10840
10841         if (!params.dont_wait_for_ack) {
10842                 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10843                 if (!msg)
10844                         return -ENOMEM;
10845
10846                 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
10847                                      NL80211_CMD_FRAME);
10848                 if (!hdr) {
10849                         err = -ENOBUFS;
10850                         goto free_msg;
10851                 }
10852         }
10853
10854         params.chan = chandef.chan;
10855         err = cfg80211_mlme_mgmt_tx(rdev, wdev, &params, &cookie);
10856         if (err)
10857                 goto free_msg;
10858
10859         if (msg) {
10860                 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
10861                                       NL80211_ATTR_PAD))
10862                         goto nla_put_failure;
10863
10864                 genlmsg_end(msg, hdr);
10865                 return genlmsg_reply(msg, info);
10866         }
10867
10868         return 0;
10869
10870  nla_put_failure:
10871         err = -ENOBUFS;
10872  free_msg:
10873         nlmsg_free(msg);
10874         return err;
10875 }
10876
10877 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
10878 {
10879         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10880         struct wireless_dev *wdev = info->user_ptr[1];
10881         u64 cookie;
10882
10883         if (!info->attrs[NL80211_ATTR_COOKIE])
10884                 return -EINVAL;
10885
10886         if (!rdev->ops->mgmt_tx_cancel_wait)
10887                 return -EOPNOTSUPP;
10888
10889         switch (wdev->iftype) {
10890         case NL80211_IFTYPE_STATION:
10891         case NL80211_IFTYPE_ADHOC:
10892         case NL80211_IFTYPE_P2P_CLIENT:
10893         case NL80211_IFTYPE_AP:
10894         case NL80211_IFTYPE_AP_VLAN:
10895         case NL80211_IFTYPE_P2P_GO:
10896         case NL80211_IFTYPE_P2P_DEVICE:
10897                 break;
10898         case NL80211_IFTYPE_NAN:
10899         default:
10900                 return -EOPNOTSUPP;
10901         }
10902
10903         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
10904
10905         return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie);
10906 }
10907
10908 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
10909 {
10910         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10911         struct wireless_dev *wdev;
10912         struct net_device *dev = info->user_ptr[1];
10913         u8 ps_state;
10914         bool state;
10915         int err;
10916
10917         if (!info->attrs[NL80211_ATTR_PS_STATE])
10918                 return -EINVAL;
10919
10920         ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
10921
10922         wdev = dev->ieee80211_ptr;
10923
10924         if (!rdev->ops->set_power_mgmt)
10925                 return -EOPNOTSUPP;
10926
10927         state = (ps_state == NL80211_PS_ENABLED) ? true : false;
10928
10929         if (state == wdev->ps)
10930                 return 0;
10931
10932         err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout);
10933         if (!err)
10934                 wdev->ps = state;
10935         return err;
10936 }
10937
10938 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
10939 {
10940         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10941         enum nl80211_ps_state ps_state;
10942         struct wireless_dev *wdev;
10943         struct net_device *dev = info->user_ptr[1];
10944         struct sk_buff *msg;
10945         void *hdr;
10946         int err;
10947
10948         wdev = dev->ieee80211_ptr;
10949
10950         if (!rdev->ops->set_power_mgmt)
10951                 return -EOPNOTSUPP;
10952
10953         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10954         if (!msg)
10955                 return -ENOMEM;
10956
10957         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
10958                              NL80211_CMD_GET_POWER_SAVE);
10959         if (!hdr) {
10960                 err = -ENOBUFS;
10961                 goto free_msg;
10962         }
10963
10964         if (wdev->ps)
10965                 ps_state = NL80211_PS_ENABLED;
10966         else
10967                 ps_state = NL80211_PS_DISABLED;
10968
10969         if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state))
10970                 goto nla_put_failure;
10971
10972         genlmsg_end(msg, hdr);
10973         return genlmsg_reply(msg, info);
10974
10975  nla_put_failure:
10976         err = -ENOBUFS;
10977  free_msg:
10978         nlmsg_free(msg);
10979         return err;
10980 }
10981
10982 static const struct nla_policy
10983 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] = {
10984         [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_BINARY },
10985         [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
10986         [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
10987         [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 },
10988         [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 },
10989         [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 },
10990         [NL80211_ATTR_CQM_RSSI_LEVEL] = { .type = NLA_S32 },
10991 };
10992
10993 static int nl80211_set_cqm_txe(struct genl_info *info,
10994                                u32 rate, u32 pkts, u32 intvl)
10995 {
10996         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10997         struct net_device *dev = info->user_ptr[1];
10998         struct wireless_dev *wdev = dev->ieee80211_ptr;
10999
11000         if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL)
11001                 return -EINVAL;
11002
11003         if (!rdev->ops->set_cqm_txe_config)
11004                 return -EOPNOTSUPP;
11005
11006         if (wdev->iftype != NL80211_IFTYPE_STATION &&
11007             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
11008                 return -EOPNOTSUPP;
11009
11010         return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl);
11011 }
11012
11013 static int cfg80211_cqm_rssi_update(struct cfg80211_registered_device *rdev,
11014                                     struct net_device *dev)
11015 {
11016         struct wireless_dev *wdev = dev->ieee80211_ptr;
11017         s32 last, low, high;
11018         u32 hyst;
11019         int i, n, low_index;
11020         int err;
11021
11022         /* RSSI reporting disabled? */
11023         if (!wdev->cqm_config)
11024                 return rdev_set_cqm_rssi_range_config(rdev, dev, 0, 0);
11025
11026         /*
11027          * Obtain current RSSI value if possible, if not and no RSSI threshold
11028          * event has been received yet, we should receive an event after a
11029          * connection is established and enough beacons received to calculate
11030          * the average.
11031          */
11032         if (!wdev->cqm_config->last_rssi_event_value && wdev->current_bss &&
11033             rdev->ops->get_station) {
11034                 struct station_info sinfo = {};
11035                 u8 *mac_addr;
11036
11037                 mac_addr = wdev->current_bss->pub.bssid;
11038
11039                 err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
11040                 if (err)
11041                         return err;
11042
11043                 cfg80211_sinfo_release_content(&sinfo);
11044                 if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_BEACON_SIGNAL_AVG))
11045                         wdev->cqm_config->last_rssi_event_value =
11046                                 (s8) sinfo.rx_beacon_signal_avg;
11047         }
11048
11049         last = wdev->cqm_config->last_rssi_event_value;
11050         hyst = wdev->cqm_config->rssi_hyst;
11051         n = wdev->cqm_config->n_rssi_thresholds;
11052
11053         for (i = 0; i < n; i++) {
11054                 i = array_index_nospec(i, n);
11055                 if (last < wdev->cqm_config->rssi_thresholds[i])
11056                         break;
11057         }
11058
11059         low_index = i - 1;
11060         if (low_index >= 0) {
11061                 low_index = array_index_nospec(low_index, n);
11062                 low = wdev->cqm_config->rssi_thresholds[low_index] - hyst;
11063         } else {
11064                 low = S32_MIN;
11065         }
11066         if (i < n) {
11067                 i = array_index_nospec(i, n);
11068                 high = wdev->cqm_config->rssi_thresholds[i] + hyst - 1;
11069         } else {
11070                 high = S32_MAX;
11071         }
11072
11073         return rdev_set_cqm_rssi_range_config(rdev, dev, low, high);
11074 }
11075
11076 static int nl80211_set_cqm_rssi(struct genl_info *info,
11077                                 const s32 *thresholds, int n_thresholds,
11078                                 u32 hysteresis)
11079 {
11080         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11081         struct net_device *dev = info->user_ptr[1];
11082         struct wireless_dev *wdev = dev->ieee80211_ptr;
11083         int i, err;
11084         s32 prev = S32_MIN;
11085
11086         /* Check all values negative and sorted */
11087         for (i = 0; i < n_thresholds; i++) {
11088                 if (thresholds[i] > 0 || thresholds[i] <= prev)
11089                         return -EINVAL;
11090
11091                 prev = thresholds[i];
11092         }
11093
11094         if (wdev->iftype != NL80211_IFTYPE_STATION &&
11095             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
11096                 return -EOPNOTSUPP;
11097
11098         wdev_lock(wdev);
11099         cfg80211_cqm_config_free(wdev);
11100         wdev_unlock(wdev);
11101
11102         if (n_thresholds <= 1 && rdev->ops->set_cqm_rssi_config) {
11103                 if (n_thresholds == 0 || thresholds[0] == 0) /* Disabling */
11104                         return rdev_set_cqm_rssi_config(rdev, dev, 0, 0);
11105
11106                 return rdev_set_cqm_rssi_config(rdev, dev,
11107                                                 thresholds[0], hysteresis);
11108         }
11109
11110         if (!wiphy_ext_feature_isset(&rdev->wiphy,
11111                                      NL80211_EXT_FEATURE_CQM_RSSI_LIST))
11112                 return -EOPNOTSUPP;
11113
11114         if (n_thresholds == 1 && thresholds[0] == 0) /* Disabling */
11115                 n_thresholds = 0;
11116
11117         wdev_lock(wdev);
11118         if (n_thresholds) {
11119                 struct cfg80211_cqm_config *cqm_config;
11120
11121                 cqm_config = kzalloc(sizeof(struct cfg80211_cqm_config) +
11122                                      n_thresholds * sizeof(s32), GFP_KERNEL);
11123                 if (!cqm_config) {
11124                         err = -ENOMEM;
11125                         goto unlock;
11126                 }
11127
11128                 cqm_config->rssi_hyst = hysteresis;
11129                 cqm_config->n_rssi_thresholds = n_thresholds;
11130                 memcpy(cqm_config->rssi_thresholds, thresholds,
11131                        n_thresholds * sizeof(s32));
11132
11133                 wdev->cqm_config = cqm_config;
11134         }
11135
11136         err = cfg80211_cqm_rssi_update(rdev, dev);
11137
11138 unlock:
11139         wdev_unlock(wdev);
11140
11141         return err;
11142 }
11143
11144 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
11145 {
11146         struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
11147         struct nlattr *cqm;
11148         int err;
11149
11150         cqm = info->attrs[NL80211_ATTR_CQM];
11151         if (!cqm)
11152                 return -EINVAL;
11153
11154         err = nla_parse_nested_deprecated(attrs, NL80211_ATTR_CQM_MAX, cqm,
11155                                           nl80211_attr_cqm_policy,
11156                                           info->extack);
11157         if (err)
11158                 return err;
11159
11160         if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
11161             attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
11162                 const s32 *thresholds =
11163                         nla_data(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
11164                 int len = nla_len(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
11165                 u32 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
11166
11167                 if (len % 4)
11168                         return -EINVAL;
11169
11170                 return nl80211_set_cqm_rssi(info, thresholds, len / 4,
11171                                             hysteresis);
11172         }
11173
11174         if (attrs[NL80211_ATTR_CQM_TXE_RATE] &&
11175             attrs[NL80211_ATTR_CQM_TXE_PKTS] &&
11176             attrs[NL80211_ATTR_CQM_TXE_INTVL]) {
11177                 u32 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]);
11178                 u32 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]);
11179                 u32 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]);
11180
11181                 return nl80211_set_cqm_txe(info, rate, pkts, intvl);
11182         }
11183
11184         return -EINVAL;
11185 }
11186
11187 static int nl80211_join_ocb(struct sk_buff *skb, struct genl_info *info)
11188 {
11189         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11190         struct net_device *dev = info->user_ptr[1];
11191         struct ocb_setup setup = {};
11192         int err;
11193
11194         err = nl80211_parse_chandef(rdev, info, &setup.chandef);
11195         if (err)
11196                 return err;
11197
11198         return cfg80211_join_ocb(rdev, dev, &setup);
11199 }
11200
11201 static int nl80211_leave_ocb(struct sk_buff *skb, struct genl_info *info)
11202 {
11203         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11204         struct net_device *dev = info->user_ptr[1];
11205
11206         return cfg80211_leave_ocb(rdev, dev);
11207 }
11208
11209 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
11210 {
11211         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11212         struct net_device *dev = info->user_ptr[1];
11213         struct mesh_config cfg;
11214         struct mesh_setup setup;
11215         int err;
11216
11217         /* start with default */
11218         memcpy(&cfg, &default_mesh_config, sizeof(cfg));
11219         memcpy(&setup, &default_mesh_setup, sizeof(setup));
11220
11221         if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
11222                 /* and parse parameters if given */
11223                 err = nl80211_parse_mesh_config(info, &cfg, NULL);
11224                 if (err)
11225                         return err;
11226         }
11227
11228         if (!info->attrs[NL80211_ATTR_MESH_ID] ||
11229             !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
11230                 return -EINVAL;
11231
11232         setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
11233         setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
11234
11235         if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
11236             !nl80211_parse_mcast_rate(rdev, setup.mcast_rate,
11237                             nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
11238                         return -EINVAL;
11239
11240         if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
11241                 setup.beacon_interval =
11242                         nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
11243
11244                 err = cfg80211_validate_beacon_int(rdev,
11245                                                    NL80211_IFTYPE_MESH_POINT,
11246                                                    setup.beacon_interval);
11247                 if (err)
11248                         return err;
11249         }
11250
11251         if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
11252                 setup.dtim_period =
11253                         nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
11254                 if (setup.dtim_period < 1 || setup.dtim_period > 100)
11255                         return -EINVAL;
11256         }
11257
11258         if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
11259                 /* parse additional setup parameters if given */
11260                 err = nl80211_parse_mesh_setup(info, &setup);
11261                 if (err)
11262                         return err;
11263         }
11264
11265         if (setup.user_mpm)
11266                 cfg.auto_open_plinks = false;
11267
11268         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
11269                 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
11270                 if (err)
11271                         return err;
11272         } else {
11273                 /* __cfg80211_join_mesh() will sort it out */
11274                 setup.chandef.chan = NULL;
11275         }
11276
11277         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
11278                 u8 *rates = nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
11279                 int n_rates =
11280                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
11281                 struct ieee80211_supported_band *sband;
11282
11283                 if (!setup.chandef.chan)
11284                         return -EINVAL;
11285
11286                 sband = rdev->wiphy.bands[setup.chandef.chan->band];
11287
11288                 err = ieee80211_get_ratemask(sband, rates, n_rates,
11289                                              &setup.basic_rates);
11290                 if (err)
11291                         return err;
11292         }
11293
11294         if (info->attrs[NL80211_ATTR_TX_RATES]) {
11295                 err = nl80211_parse_tx_bitrate_mask(info, &setup.beacon_rate);
11296                 if (err)
11297                         return err;
11298
11299                 if (!setup.chandef.chan)
11300                         return -EINVAL;
11301
11302                 err = validate_beacon_tx_rate(rdev, setup.chandef.chan->band,
11303                                               &setup.beacon_rate);
11304                 if (err)
11305                         return err;
11306         }
11307
11308         setup.userspace_handles_dfs =
11309                 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
11310
11311         if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
11312                 int r = validate_pae_over_nl80211(rdev, info);
11313
11314                 if (r < 0)
11315                         return r;
11316
11317                 setup.control_port_over_nl80211 = true;
11318         }
11319
11320         wdev_lock(dev->ieee80211_ptr);
11321         err = __cfg80211_join_mesh(rdev, dev, &setup, &cfg);
11322         if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER])
11323                 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
11324         wdev_unlock(dev->ieee80211_ptr);
11325
11326         return err;
11327 }
11328
11329 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
11330 {
11331         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11332         struct net_device *dev = info->user_ptr[1];
11333
11334         return cfg80211_leave_mesh(rdev, dev);
11335 }
11336
11337 #ifdef CONFIG_PM
11338 static int nl80211_send_wowlan_patterns(struct sk_buff *msg,
11339                                         struct cfg80211_registered_device *rdev)
11340 {
11341         struct cfg80211_wowlan *wowlan = rdev->wiphy.wowlan_config;
11342         struct nlattr *nl_pats, *nl_pat;
11343         int i, pat_len;
11344
11345         if (!wowlan->n_patterns)
11346                 return 0;
11347
11348         nl_pats = nla_nest_start_noflag(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN);
11349         if (!nl_pats)
11350                 return -ENOBUFS;
11351
11352         for (i = 0; i < wowlan->n_patterns; i++) {
11353                 nl_pat = nla_nest_start_noflag(msg, i + 1);
11354                 if (!nl_pat)
11355                         return -ENOBUFS;
11356                 pat_len = wowlan->patterns[i].pattern_len;
11357                 if (nla_put(msg, NL80211_PKTPAT_MASK, DIV_ROUND_UP(pat_len, 8),
11358                             wowlan->patterns[i].mask) ||
11359                     nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
11360                             wowlan->patterns[i].pattern) ||
11361                     nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
11362                                 wowlan->patterns[i].pkt_offset))
11363                         return -ENOBUFS;
11364                 nla_nest_end(msg, nl_pat);
11365         }
11366         nla_nest_end(msg, nl_pats);
11367
11368         return 0;
11369 }
11370
11371 static int nl80211_send_wowlan_tcp(struct sk_buff *msg,
11372                                    struct cfg80211_wowlan_tcp *tcp)
11373 {
11374         struct nlattr *nl_tcp;
11375
11376         if (!tcp)
11377                 return 0;
11378
11379         nl_tcp = nla_nest_start_noflag(msg,
11380                                        NL80211_WOWLAN_TRIG_TCP_CONNECTION);
11381         if (!nl_tcp)
11382                 return -ENOBUFS;
11383
11384         if (nla_put_in_addr(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) ||
11385             nla_put_in_addr(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) ||
11386             nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) ||
11387             nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) ||
11388             nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) ||
11389             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
11390                     tcp->payload_len, tcp->payload) ||
11391             nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
11392                         tcp->data_interval) ||
11393             nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
11394                     tcp->wake_len, tcp->wake_data) ||
11395             nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK,
11396                     DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask))
11397                 return -ENOBUFS;
11398
11399         if (tcp->payload_seq.len &&
11400             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ,
11401                     sizeof(tcp->payload_seq), &tcp->payload_seq))
11402                 return -ENOBUFS;
11403
11404         if (tcp->payload_tok.len &&
11405             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
11406                     sizeof(tcp->payload_tok) + tcp->tokens_size,
11407                     &tcp->payload_tok))
11408                 return -ENOBUFS;
11409
11410         nla_nest_end(msg, nl_tcp);
11411
11412         return 0;
11413 }
11414
11415 static int nl80211_send_wowlan_nd(struct sk_buff *msg,
11416                                   struct cfg80211_sched_scan_request *req)
11417 {
11418         struct nlattr *nd, *freqs, *matches, *match, *scan_plans, *scan_plan;
11419         int i;
11420
11421         if (!req)
11422                 return 0;
11423
11424         nd = nla_nest_start_noflag(msg, NL80211_WOWLAN_TRIG_NET_DETECT);
11425         if (!nd)
11426                 return -ENOBUFS;
11427
11428         if (req->n_scan_plans == 1 &&
11429             nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_INTERVAL,
11430                         req->scan_plans[0].interval * 1000))
11431                 return -ENOBUFS;
11432
11433         if (nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_DELAY, req->delay))
11434                 return -ENOBUFS;
11435
11436         if (req->relative_rssi_set) {
11437                 struct nl80211_bss_select_rssi_adjust rssi_adjust;
11438
11439                 if (nla_put_s8(msg, NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI,
11440                                req->relative_rssi))
11441                         return -ENOBUFS;
11442
11443                 rssi_adjust.band = req->rssi_adjust.band;
11444                 rssi_adjust.delta = req->rssi_adjust.delta;
11445                 if (nla_put(msg, NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST,
11446                             sizeof(rssi_adjust), &rssi_adjust))
11447                         return -ENOBUFS;
11448         }
11449
11450         freqs = nla_nest_start_noflag(msg, NL80211_ATTR_SCAN_FREQUENCIES);
11451         if (!freqs)
11452                 return -ENOBUFS;
11453
11454         for (i = 0; i < req->n_channels; i++) {
11455                 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
11456                         return -ENOBUFS;
11457         }
11458
11459         nla_nest_end(msg, freqs);
11460
11461         if (req->n_match_sets) {
11462                 matches = nla_nest_start_noflag(msg,
11463                                                 NL80211_ATTR_SCHED_SCAN_MATCH);
11464                 if (!matches)
11465                         return -ENOBUFS;
11466
11467                 for (i = 0; i < req->n_match_sets; i++) {
11468                         match = nla_nest_start_noflag(msg, i);
11469                         if (!match)
11470                                 return -ENOBUFS;
11471
11472                         if (nla_put(msg, NL80211_SCHED_SCAN_MATCH_ATTR_SSID,
11473                                     req->match_sets[i].ssid.ssid_len,
11474                                     req->match_sets[i].ssid.ssid))
11475                                 return -ENOBUFS;
11476                         nla_nest_end(msg, match);
11477                 }
11478                 nla_nest_end(msg, matches);
11479         }
11480
11481         scan_plans = nla_nest_start_noflag(msg, NL80211_ATTR_SCHED_SCAN_PLANS);
11482         if (!scan_plans)
11483                 return -ENOBUFS;
11484
11485         for (i = 0; i < req->n_scan_plans; i++) {
11486                 scan_plan = nla_nest_start_noflag(msg, i + 1);
11487                 if (!scan_plan)
11488                         return -ENOBUFS;
11489
11490                 if (nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_INTERVAL,
11491                                 req->scan_plans[i].interval) ||
11492                     (req->scan_plans[i].iterations &&
11493                      nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_ITERATIONS,
11494                                  req->scan_plans[i].iterations)))
11495                         return -ENOBUFS;
11496                 nla_nest_end(msg, scan_plan);
11497         }
11498         nla_nest_end(msg, scan_plans);
11499
11500         nla_nest_end(msg, nd);
11501
11502         return 0;
11503 }
11504
11505 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
11506 {
11507         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11508         struct sk_buff *msg;
11509         void *hdr;
11510         u32 size = NLMSG_DEFAULT_SIZE;
11511
11512         if (!rdev->wiphy.wowlan)
11513                 return -EOPNOTSUPP;
11514
11515         if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) {
11516                 /* adjust size to have room for all the data */
11517                 size += rdev->wiphy.wowlan_config->tcp->tokens_size +
11518                         rdev->wiphy.wowlan_config->tcp->payload_len +
11519                         rdev->wiphy.wowlan_config->tcp->wake_len +
11520                         rdev->wiphy.wowlan_config->tcp->wake_len / 8;
11521         }
11522
11523         msg = nlmsg_new(size, GFP_KERNEL);
11524         if (!msg)
11525                 return -ENOMEM;
11526
11527         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
11528                              NL80211_CMD_GET_WOWLAN);
11529         if (!hdr)
11530                 goto nla_put_failure;
11531
11532         if (rdev->wiphy.wowlan_config) {
11533                 struct nlattr *nl_wowlan;
11534
11535                 nl_wowlan = nla_nest_start_noflag(msg,
11536                                                   NL80211_ATTR_WOWLAN_TRIGGERS);
11537                 if (!nl_wowlan)
11538                         goto nla_put_failure;
11539
11540                 if ((rdev->wiphy.wowlan_config->any &&
11541                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
11542                     (rdev->wiphy.wowlan_config->disconnect &&
11543                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
11544                     (rdev->wiphy.wowlan_config->magic_pkt &&
11545                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
11546                     (rdev->wiphy.wowlan_config->gtk_rekey_failure &&
11547                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
11548                     (rdev->wiphy.wowlan_config->eap_identity_req &&
11549                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
11550                     (rdev->wiphy.wowlan_config->four_way_handshake &&
11551                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
11552                     (rdev->wiphy.wowlan_config->rfkill_release &&
11553                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
11554                         goto nla_put_failure;
11555
11556                 if (nl80211_send_wowlan_patterns(msg, rdev))
11557                         goto nla_put_failure;
11558
11559                 if (nl80211_send_wowlan_tcp(msg,
11560                                             rdev->wiphy.wowlan_config->tcp))
11561                         goto nla_put_failure;
11562
11563                 if (nl80211_send_wowlan_nd(
11564                             msg,
11565                             rdev->wiphy.wowlan_config->nd_config))
11566                         goto nla_put_failure;
11567
11568                 nla_nest_end(msg, nl_wowlan);
11569         }
11570
11571         genlmsg_end(msg, hdr);
11572         return genlmsg_reply(msg, info);
11573
11574 nla_put_failure:
11575         nlmsg_free(msg);
11576         return -ENOBUFS;
11577 }
11578
11579 static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev,
11580                                     struct nlattr *attr,
11581                                     struct cfg80211_wowlan *trig)
11582 {
11583         struct nlattr *tb[NUM_NL80211_WOWLAN_TCP];
11584         struct cfg80211_wowlan_tcp *cfg;
11585         struct nl80211_wowlan_tcp_data_token *tok = NULL;
11586         struct nl80211_wowlan_tcp_data_seq *seq = NULL;
11587         u32 size;
11588         u32 data_size, wake_size, tokens_size = 0, wake_mask_size;
11589         int err, port;
11590
11591         if (!rdev->wiphy.wowlan->tcp)
11592                 return -EINVAL;
11593
11594         err = nla_parse_nested_deprecated(tb, MAX_NL80211_WOWLAN_TCP, attr,
11595                                           nl80211_wowlan_tcp_policy, NULL);
11596         if (err)
11597                 return err;
11598
11599         if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] ||
11600             !tb[NL80211_WOWLAN_TCP_DST_IPV4] ||
11601             !tb[NL80211_WOWLAN_TCP_DST_MAC] ||
11602             !tb[NL80211_WOWLAN_TCP_DST_PORT] ||
11603             !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] ||
11604             !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] ||
11605             !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] ||
11606             !tb[NL80211_WOWLAN_TCP_WAKE_MASK])
11607                 return -EINVAL;
11608
11609         data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]);
11610         if (data_size > rdev->wiphy.wowlan->tcp->data_payload_max)
11611                 return -EINVAL;
11612
11613         if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) >
11614                         rdev->wiphy.wowlan->tcp->data_interval_max ||
11615             nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0)
11616                 return -EINVAL;
11617
11618         wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]);
11619         if (wake_size > rdev->wiphy.wowlan->tcp->wake_payload_max)
11620                 return -EINVAL;
11621
11622         wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]);
11623         if (wake_mask_size != DIV_ROUND_UP(wake_size, 8))
11624                 return -EINVAL;
11625
11626         if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) {
11627                 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
11628
11629                 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
11630                 tokens_size = tokln - sizeof(*tok);
11631
11632                 if (!tok->len || tokens_size % tok->len)
11633                         return -EINVAL;
11634                 if (!rdev->wiphy.wowlan->tcp->tok)
11635                         return -EINVAL;
11636                 if (tok->len > rdev->wiphy.wowlan->tcp->tok->max_len)
11637                         return -EINVAL;
11638                 if (tok->len < rdev->wiphy.wowlan->tcp->tok->min_len)
11639                         return -EINVAL;
11640                 if (tokens_size > rdev->wiphy.wowlan->tcp->tok->bufsize)
11641                         return -EINVAL;
11642                 if (tok->offset + tok->len > data_size)
11643                         return -EINVAL;
11644         }
11645
11646         if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) {
11647                 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]);
11648                 if (!rdev->wiphy.wowlan->tcp->seq)
11649                         return -EINVAL;
11650                 if (seq->len == 0 || seq->len > 4)
11651                         return -EINVAL;
11652                 if (seq->len + seq->offset > data_size)
11653                         return -EINVAL;
11654         }
11655
11656         size = sizeof(*cfg);
11657         size += data_size;
11658         size += wake_size + wake_mask_size;
11659         size += tokens_size;
11660
11661         cfg = kzalloc(size, GFP_KERNEL);
11662         if (!cfg)
11663                 return -ENOMEM;
11664         cfg->src = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_SRC_IPV4]);
11665         cfg->dst = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_DST_IPV4]);
11666         memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]),
11667                ETH_ALEN);
11668         if (tb[NL80211_WOWLAN_TCP_SRC_PORT])
11669                 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]);
11670         else
11671                 port = 0;
11672 #ifdef CONFIG_INET
11673         /* allocate a socket and port for it and use it */
11674         err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM,
11675                             IPPROTO_TCP, &cfg->sock, 1);
11676         if (err) {
11677                 kfree(cfg);
11678                 return err;
11679         }
11680         if (inet_csk_get_port(cfg->sock->sk, port)) {
11681                 sock_release(cfg->sock);
11682                 kfree(cfg);
11683                 return -EADDRINUSE;
11684         }
11685         cfg->src_port = inet_sk(cfg->sock->sk)->inet_num;
11686 #else
11687         if (!port) {
11688                 kfree(cfg);
11689                 return -EINVAL;
11690         }
11691         cfg->src_port = port;
11692 #endif
11693
11694         cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]);
11695         cfg->payload_len = data_size;
11696         cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size;
11697         memcpy((void *)cfg->payload,
11698                nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]),
11699                data_size);
11700         if (seq)
11701                 cfg->payload_seq = *seq;
11702         cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]);
11703         cfg->wake_len = wake_size;
11704         cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size;
11705         memcpy((void *)cfg->wake_data,
11706                nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]),
11707                wake_size);
11708         cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size +
11709                          data_size + wake_size;
11710         memcpy((void *)cfg->wake_mask,
11711                nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]),
11712                wake_mask_size);
11713         if (tok) {
11714                 cfg->tokens_size = tokens_size;
11715                 memcpy(&cfg->payload_tok, tok, sizeof(*tok) + tokens_size);
11716         }
11717
11718         trig->tcp = cfg;
11719
11720         return 0;
11721 }
11722
11723 static int nl80211_parse_wowlan_nd(struct cfg80211_registered_device *rdev,
11724                                    const struct wiphy_wowlan_support *wowlan,
11725                                    struct nlattr *attr,
11726                                    struct cfg80211_wowlan *trig)
11727 {
11728         struct nlattr **tb;
11729         int err;
11730
11731         tb = kcalloc(NUM_NL80211_ATTR, sizeof(*tb), GFP_KERNEL);
11732         if (!tb)
11733                 return -ENOMEM;
11734
11735         if (!(wowlan->flags & WIPHY_WOWLAN_NET_DETECT)) {
11736                 err = -EOPNOTSUPP;
11737                 goto out;
11738         }
11739
11740         err = nla_parse_nested_deprecated(tb, NL80211_ATTR_MAX, attr,
11741                                           nl80211_policy, NULL);
11742         if (err)
11743                 goto out;
11744
11745         trig->nd_config = nl80211_parse_sched_scan(&rdev->wiphy, NULL, tb,
11746                                                    wowlan->max_nd_match_sets);
11747         err = PTR_ERR_OR_ZERO(trig->nd_config);
11748         if (err)
11749                 trig->nd_config = NULL;
11750
11751 out:
11752         kfree(tb);
11753         return err;
11754 }
11755
11756 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
11757 {
11758         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11759         struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
11760         struct cfg80211_wowlan new_triggers = {};
11761         struct cfg80211_wowlan *ntrig;
11762         const struct wiphy_wowlan_support *wowlan = rdev->wiphy.wowlan;
11763         int err, i;
11764         bool prev_enabled = rdev->wiphy.wowlan_config;
11765         bool regular = false;
11766
11767         if (!wowlan)
11768                 return -EOPNOTSUPP;
11769
11770         if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) {
11771                 cfg80211_rdev_free_wowlan(rdev);
11772                 rdev->wiphy.wowlan_config = NULL;
11773                 goto set_wakeup;
11774         }
11775
11776         err = nla_parse_nested_deprecated(tb, MAX_NL80211_WOWLAN_TRIG,
11777                                           info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS],
11778                                           nl80211_wowlan_policy, info->extack);
11779         if (err)
11780                 return err;
11781
11782         if (tb[NL80211_WOWLAN_TRIG_ANY]) {
11783                 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
11784                         return -EINVAL;
11785                 new_triggers.any = true;
11786         }
11787
11788         if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
11789                 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
11790                         return -EINVAL;
11791                 new_triggers.disconnect = true;
11792                 regular = true;
11793         }
11794
11795         if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
11796                 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
11797                         return -EINVAL;
11798                 new_triggers.magic_pkt = true;
11799                 regular = true;
11800         }
11801
11802         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
11803                 return -EINVAL;
11804
11805         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
11806                 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
11807                         return -EINVAL;
11808                 new_triggers.gtk_rekey_failure = true;
11809                 regular = true;
11810         }
11811
11812         if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
11813                 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
11814                         return -EINVAL;
11815                 new_triggers.eap_identity_req = true;
11816                 regular = true;
11817         }
11818
11819         if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
11820                 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
11821                         return -EINVAL;
11822                 new_triggers.four_way_handshake = true;
11823                 regular = true;
11824         }
11825
11826         if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
11827                 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
11828                         return -EINVAL;
11829                 new_triggers.rfkill_release = true;
11830                 regular = true;
11831         }
11832
11833         if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
11834                 struct nlattr *pat;
11835                 int n_patterns = 0;
11836                 int rem, pat_len, mask_len, pkt_offset;
11837                 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
11838
11839                 regular = true;
11840
11841                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
11842                                     rem)
11843                         n_patterns++;
11844                 if (n_patterns > wowlan->n_patterns)
11845                         return -EINVAL;
11846
11847                 new_triggers.patterns = kcalloc(n_patterns,
11848                                                 sizeof(new_triggers.patterns[0]),
11849                                                 GFP_KERNEL);
11850                 if (!new_triggers.patterns)
11851                         return -ENOMEM;
11852
11853                 new_triggers.n_patterns = n_patterns;
11854                 i = 0;
11855
11856                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
11857                                     rem) {
11858                         u8 *mask_pat;
11859
11860                         err = nla_parse_nested_deprecated(pat_tb,
11861                                                           MAX_NL80211_PKTPAT,
11862                                                           pat,
11863                                                           nl80211_packet_pattern_policy,
11864                                                           info->extack);
11865                         if (err)
11866                                 goto error;
11867
11868                         err = -EINVAL;
11869                         if (!pat_tb[NL80211_PKTPAT_MASK] ||
11870                             !pat_tb[NL80211_PKTPAT_PATTERN])
11871                                 goto error;
11872                         pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
11873                         mask_len = DIV_ROUND_UP(pat_len, 8);
11874                         if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
11875                                 goto error;
11876                         if (pat_len > wowlan->pattern_max_len ||
11877                             pat_len < wowlan->pattern_min_len)
11878                                 goto error;
11879
11880                         if (!pat_tb[NL80211_PKTPAT_OFFSET])
11881                                 pkt_offset = 0;
11882                         else
11883                                 pkt_offset = nla_get_u32(
11884                                         pat_tb[NL80211_PKTPAT_OFFSET]);
11885                         if (pkt_offset > wowlan->max_pkt_offset)
11886                                 goto error;
11887                         new_triggers.patterns[i].pkt_offset = pkt_offset;
11888
11889                         mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
11890                         if (!mask_pat) {
11891                                 err = -ENOMEM;
11892                                 goto error;
11893                         }
11894                         new_triggers.patterns[i].mask = mask_pat;
11895                         memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
11896                                mask_len);
11897                         mask_pat += mask_len;
11898                         new_triggers.patterns[i].pattern = mask_pat;
11899                         new_triggers.patterns[i].pattern_len = pat_len;
11900                         memcpy(mask_pat,
11901                                nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
11902                                pat_len);
11903                         i++;
11904                 }
11905         }
11906
11907         if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) {
11908                 regular = true;
11909                 err = nl80211_parse_wowlan_tcp(
11910                         rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION],
11911                         &new_triggers);
11912                 if (err)
11913                         goto error;
11914         }
11915
11916         if (tb[NL80211_WOWLAN_TRIG_NET_DETECT]) {
11917                 regular = true;
11918                 err = nl80211_parse_wowlan_nd(
11919                         rdev, wowlan, tb[NL80211_WOWLAN_TRIG_NET_DETECT],
11920                         &new_triggers);
11921                 if (err)
11922                         goto error;
11923         }
11924
11925         /* The 'any' trigger means the device continues operating more or less
11926          * as in its normal operation mode and wakes up the host on most of the
11927          * normal interrupts (like packet RX, ...)
11928          * It therefore makes little sense to combine with the more constrained
11929          * wakeup trigger modes.
11930          */
11931         if (new_triggers.any && regular) {
11932                 err = -EINVAL;
11933                 goto error;
11934         }
11935
11936         ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL);
11937         if (!ntrig) {
11938                 err = -ENOMEM;
11939                 goto error;
11940         }
11941         cfg80211_rdev_free_wowlan(rdev);
11942         rdev->wiphy.wowlan_config = ntrig;
11943
11944  set_wakeup:
11945         if (rdev->ops->set_wakeup &&
11946             prev_enabled != !!rdev->wiphy.wowlan_config)
11947                 rdev_set_wakeup(rdev, rdev->wiphy.wowlan_config);
11948
11949         return 0;
11950  error:
11951         for (i = 0; i < new_triggers.n_patterns; i++)
11952                 kfree(new_triggers.patterns[i].mask);
11953         kfree(new_triggers.patterns);
11954         if (new_triggers.tcp && new_triggers.tcp->sock)
11955                 sock_release(new_triggers.tcp->sock);
11956         kfree(new_triggers.tcp);
11957         kfree(new_triggers.nd_config);
11958         return err;
11959 }
11960 #endif
11961
11962 static int nl80211_send_coalesce_rules(struct sk_buff *msg,
11963                                        struct cfg80211_registered_device *rdev)
11964 {
11965         struct nlattr *nl_pats, *nl_pat, *nl_rule, *nl_rules;
11966         int i, j, pat_len;
11967         struct cfg80211_coalesce_rules *rule;
11968
11969         if (!rdev->coalesce->n_rules)
11970                 return 0;
11971
11972         nl_rules = nla_nest_start_noflag(msg, NL80211_ATTR_COALESCE_RULE);
11973         if (!nl_rules)
11974                 return -ENOBUFS;
11975
11976         for (i = 0; i < rdev->coalesce->n_rules; i++) {
11977                 nl_rule = nla_nest_start_noflag(msg, i + 1);
11978                 if (!nl_rule)
11979                         return -ENOBUFS;
11980
11981                 rule = &rdev->coalesce->rules[i];
11982                 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_DELAY,
11983                                 rule->delay))
11984                         return -ENOBUFS;
11985
11986                 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_CONDITION,
11987                                 rule->condition))
11988                         return -ENOBUFS;
11989
11990                 nl_pats = nla_nest_start_noflag(msg,
11991                                                 NL80211_ATTR_COALESCE_RULE_PKT_PATTERN);
11992                 if (!nl_pats)
11993                         return -ENOBUFS;
11994
11995                 for (j = 0; j < rule->n_patterns; j++) {
11996                         nl_pat = nla_nest_start_noflag(msg, j + 1);
11997                         if (!nl_pat)
11998                                 return -ENOBUFS;
11999                         pat_len = rule->patterns[j].pattern_len;
12000                         if (nla_put(msg, NL80211_PKTPAT_MASK,
12001                                     DIV_ROUND_UP(pat_len, 8),
12002                                     rule->patterns[j].mask) ||
12003                             nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
12004                                     rule->patterns[j].pattern) ||
12005                             nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
12006                                         rule->patterns[j].pkt_offset))
12007                                 return -ENOBUFS;
12008                         nla_nest_end(msg, nl_pat);
12009                 }
12010                 nla_nest_end(msg, nl_pats);
12011                 nla_nest_end(msg, nl_rule);
12012         }
12013         nla_nest_end(msg, nl_rules);
12014
12015         return 0;
12016 }
12017
12018 static int nl80211_get_coalesce(struct sk_buff *skb, struct genl_info *info)
12019 {
12020         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12021         struct sk_buff *msg;
12022         void *hdr;
12023
12024         if (!rdev->wiphy.coalesce)
12025                 return -EOPNOTSUPP;
12026
12027         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12028         if (!msg)
12029                 return -ENOMEM;
12030
12031         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
12032                              NL80211_CMD_GET_COALESCE);
12033         if (!hdr)
12034                 goto nla_put_failure;
12035
12036         if (rdev->coalesce && nl80211_send_coalesce_rules(msg, rdev))
12037                 goto nla_put_failure;
12038
12039         genlmsg_end(msg, hdr);
12040         return genlmsg_reply(msg, info);
12041
12042 nla_put_failure:
12043         nlmsg_free(msg);
12044         return -ENOBUFS;
12045 }
12046
12047 void cfg80211_rdev_free_coalesce(struct cfg80211_registered_device *rdev)
12048 {
12049         struct cfg80211_coalesce *coalesce = rdev->coalesce;
12050         int i, j;
12051         struct cfg80211_coalesce_rules *rule;
12052
12053         if (!coalesce)
12054                 return;
12055
12056         for (i = 0; i < coalesce->n_rules; i++) {
12057                 rule = &coalesce->rules[i];
12058                 for (j = 0; j < rule->n_patterns; j++)
12059                         kfree(rule->patterns[j].mask);
12060                 kfree(rule->patterns);
12061         }
12062         kfree(coalesce->rules);
12063         kfree(coalesce);
12064         rdev->coalesce = NULL;
12065 }
12066
12067 static int nl80211_parse_coalesce_rule(struct cfg80211_registered_device *rdev,
12068                                        struct nlattr *rule,
12069                                        struct cfg80211_coalesce_rules *new_rule)
12070 {
12071         int err, i;
12072         const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
12073         struct nlattr *tb[NUM_NL80211_ATTR_COALESCE_RULE], *pat;
12074         int rem, pat_len, mask_len, pkt_offset, n_patterns = 0;
12075         struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
12076
12077         err = nla_parse_nested_deprecated(tb, NL80211_ATTR_COALESCE_RULE_MAX,
12078                                           rule, nl80211_coalesce_policy, NULL);
12079         if (err)
12080                 return err;
12081
12082         if (tb[NL80211_ATTR_COALESCE_RULE_DELAY])
12083                 new_rule->delay =
12084                         nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_DELAY]);
12085         if (new_rule->delay > coalesce->max_delay)
12086                 return -EINVAL;
12087
12088         if (tb[NL80211_ATTR_COALESCE_RULE_CONDITION])
12089                 new_rule->condition =
12090                         nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_CONDITION]);
12091
12092         if (!tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN])
12093                 return -EINVAL;
12094
12095         nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
12096                             rem)
12097                 n_patterns++;
12098         if (n_patterns > coalesce->n_patterns)
12099                 return -EINVAL;
12100
12101         new_rule->patterns = kcalloc(n_patterns, sizeof(new_rule->patterns[0]),
12102                                      GFP_KERNEL);
12103         if (!new_rule->patterns)
12104                 return -ENOMEM;
12105
12106         new_rule->n_patterns = n_patterns;
12107         i = 0;
12108
12109         nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
12110                             rem) {
12111                 u8 *mask_pat;
12112
12113                 err = nla_parse_nested_deprecated(pat_tb, MAX_NL80211_PKTPAT,
12114                                                   pat,
12115                                                   nl80211_packet_pattern_policy,
12116                                                   NULL);
12117                 if (err)
12118                         return err;
12119
12120                 if (!pat_tb[NL80211_PKTPAT_MASK] ||
12121                     !pat_tb[NL80211_PKTPAT_PATTERN])
12122                         return -EINVAL;
12123                 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
12124                 mask_len = DIV_ROUND_UP(pat_len, 8);
12125                 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
12126                         return -EINVAL;
12127                 if (pat_len > coalesce->pattern_max_len ||
12128                     pat_len < coalesce->pattern_min_len)
12129                         return -EINVAL;
12130
12131                 if (!pat_tb[NL80211_PKTPAT_OFFSET])
12132                         pkt_offset = 0;
12133                 else
12134                         pkt_offset = nla_get_u32(pat_tb[NL80211_PKTPAT_OFFSET]);
12135                 if (pkt_offset > coalesce->max_pkt_offset)
12136                         return -EINVAL;
12137                 new_rule->patterns[i].pkt_offset = pkt_offset;
12138
12139                 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
12140                 if (!mask_pat)
12141                         return -ENOMEM;
12142
12143                 new_rule->patterns[i].mask = mask_pat;
12144                 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
12145                        mask_len);
12146
12147                 mask_pat += mask_len;
12148                 new_rule->patterns[i].pattern = mask_pat;
12149                 new_rule->patterns[i].pattern_len = pat_len;
12150                 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
12151                        pat_len);
12152                 i++;
12153         }
12154
12155         return 0;
12156 }
12157
12158 static int nl80211_set_coalesce(struct sk_buff *skb, struct genl_info *info)
12159 {
12160         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12161         const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
12162         struct cfg80211_coalesce new_coalesce = {};
12163         struct cfg80211_coalesce *n_coalesce;
12164         int err, rem_rule, n_rules = 0, i, j;
12165         struct nlattr *rule;
12166         struct cfg80211_coalesce_rules *tmp_rule;
12167
12168         if (!rdev->wiphy.coalesce || !rdev->ops->set_coalesce)
12169                 return -EOPNOTSUPP;
12170
12171         if (!info->attrs[NL80211_ATTR_COALESCE_RULE]) {
12172                 cfg80211_rdev_free_coalesce(rdev);
12173                 rdev_set_coalesce(rdev, NULL);
12174                 return 0;
12175         }
12176
12177         nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
12178                             rem_rule)
12179                 n_rules++;
12180         if (n_rules > coalesce->n_rules)
12181                 return -EINVAL;
12182
12183         new_coalesce.rules = kcalloc(n_rules, sizeof(new_coalesce.rules[0]),
12184                                      GFP_KERNEL);
12185         if (!new_coalesce.rules)
12186                 return -ENOMEM;
12187
12188         new_coalesce.n_rules = n_rules;
12189         i = 0;
12190
12191         nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
12192                             rem_rule) {
12193                 err = nl80211_parse_coalesce_rule(rdev, rule,
12194                                                   &new_coalesce.rules[i]);
12195                 if (err)
12196                         goto error;
12197
12198                 i++;
12199         }
12200
12201         err = rdev_set_coalesce(rdev, &new_coalesce);
12202         if (err)
12203                 goto error;
12204
12205         n_coalesce = kmemdup(&new_coalesce, sizeof(new_coalesce), GFP_KERNEL);
12206         if (!n_coalesce) {
12207                 err = -ENOMEM;
12208                 goto error;
12209         }
12210         cfg80211_rdev_free_coalesce(rdev);
12211         rdev->coalesce = n_coalesce;
12212
12213         return 0;
12214 error:
12215         for (i = 0; i < new_coalesce.n_rules; i++) {
12216                 tmp_rule = &new_coalesce.rules[i];
12217                 for (j = 0; j < tmp_rule->n_patterns; j++)
12218                         kfree(tmp_rule->patterns[j].mask);
12219                 kfree(tmp_rule->patterns);
12220         }
12221         kfree(new_coalesce.rules);
12222
12223         return err;
12224 }
12225
12226 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
12227 {
12228         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12229         struct net_device *dev = info->user_ptr[1];
12230         struct wireless_dev *wdev = dev->ieee80211_ptr;
12231         struct nlattr *tb[NUM_NL80211_REKEY_DATA];
12232         struct cfg80211_gtk_rekey_data rekey_data;
12233         int err;
12234
12235         if (!info->attrs[NL80211_ATTR_REKEY_DATA])
12236                 return -EINVAL;
12237
12238         err = nla_parse_nested_deprecated(tb, MAX_NL80211_REKEY_DATA,
12239                                           info->attrs[NL80211_ATTR_REKEY_DATA],
12240                                           nl80211_rekey_policy, info->extack);
12241         if (err)
12242                 return err;
12243
12244         if (!tb[NL80211_REKEY_DATA_REPLAY_CTR] || !tb[NL80211_REKEY_DATA_KEK] ||
12245             !tb[NL80211_REKEY_DATA_KCK])
12246                 return -EINVAL;
12247         if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN)
12248                 return -ERANGE;
12249         if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN)
12250                 return -ERANGE;
12251         if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN)
12252                 return -ERANGE;
12253
12254         rekey_data.kek = nla_data(tb[NL80211_REKEY_DATA_KEK]);
12255         rekey_data.kck = nla_data(tb[NL80211_REKEY_DATA_KCK]);
12256         rekey_data.replay_ctr = nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]);
12257
12258         wdev_lock(wdev);
12259         if (!wdev->current_bss) {
12260                 err = -ENOTCONN;
12261                 goto out;
12262         }
12263
12264         if (!rdev->ops->set_rekey_data) {
12265                 err = -EOPNOTSUPP;
12266                 goto out;
12267         }
12268
12269         err = rdev_set_rekey_data(rdev, dev, &rekey_data);
12270  out:
12271         wdev_unlock(wdev);
12272         return err;
12273 }
12274
12275 static int nl80211_register_unexpected_frame(struct sk_buff *skb,
12276                                              struct genl_info *info)
12277 {
12278         struct net_device *dev = info->user_ptr[1];
12279         struct wireless_dev *wdev = dev->ieee80211_ptr;
12280
12281         if (wdev->iftype != NL80211_IFTYPE_AP &&
12282             wdev->iftype != NL80211_IFTYPE_P2P_GO)
12283                 return -EINVAL;
12284
12285         if (wdev->ap_unexpected_nlportid)
12286                 return -EBUSY;
12287
12288         wdev->ap_unexpected_nlportid = info->snd_portid;
12289         return 0;
12290 }
12291
12292 static int nl80211_probe_client(struct sk_buff *skb,
12293                                 struct genl_info *info)
12294 {
12295         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12296         struct net_device *dev = info->user_ptr[1];
12297         struct wireless_dev *wdev = dev->ieee80211_ptr;
12298         struct sk_buff *msg;
12299         void *hdr;
12300         const u8 *addr;
12301         u64 cookie;
12302         int err;
12303
12304         if (wdev->iftype != NL80211_IFTYPE_AP &&
12305             wdev->iftype != NL80211_IFTYPE_P2P_GO)
12306                 return -EOPNOTSUPP;
12307
12308         if (!info->attrs[NL80211_ATTR_MAC])
12309                 return -EINVAL;
12310
12311         if (!rdev->ops->probe_client)
12312                 return -EOPNOTSUPP;
12313
12314         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12315         if (!msg)
12316                 return -ENOMEM;
12317
12318         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
12319                              NL80211_CMD_PROBE_CLIENT);
12320         if (!hdr) {
12321                 err = -ENOBUFS;
12322                 goto free_msg;
12323         }
12324
12325         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
12326
12327         err = rdev_probe_client(rdev, dev, addr, &cookie);
12328         if (err)
12329                 goto free_msg;
12330
12331         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
12332                               NL80211_ATTR_PAD))
12333                 goto nla_put_failure;
12334
12335         genlmsg_end(msg, hdr);
12336
12337         return genlmsg_reply(msg, info);
12338
12339  nla_put_failure:
12340         err = -ENOBUFS;
12341  free_msg:
12342         nlmsg_free(msg);
12343         return err;
12344 }
12345
12346 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
12347 {
12348         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12349         struct cfg80211_beacon_registration *reg, *nreg;
12350         int rv;
12351
12352         if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS))
12353                 return -EOPNOTSUPP;
12354
12355         nreg = kzalloc(sizeof(*nreg), GFP_KERNEL);
12356         if (!nreg)
12357                 return -ENOMEM;
12358
12359         /* First, check if already registered. */
12360         spin_lock_bh(&rdev->beacon_registrations_lock);
12361         list_for_each_entry(reg, &rdev->beacon_registrations, list) {
12362                 if (reg->nlportid == info->snd_portid) {
12363                         rv = -EALREADY;
12364                         goto out_err;
12365                 }
12366         }
12367         /* Add it to the list */
12368         nreg->nlportid = info->snd_portid;
12369         list_add(&nreg->list, &rdev->beacon_registrations);
12370
12371         spin_unlock_bh(&rdev->beacon_registrations_lock);
12372
12373         return 0;
12374 out_err:
12375         spin_unlock_bh(&rdev->beacon_registrations_lock);
12376         kfree(nreg);
12377         return rv;
12378 }
12379
12380 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info)
12381 {
12382         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12383         struct wireless_dev *wdev = info->user_ptr[1];
12384         int err;
12385
12386         if (!rdev->ops->start_p2p_device)
12387                 return -EOPNOTSUPP;
12388
12389         if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
12390                 return -EOPNOTSUPP;
12391
12392         if (wdev_running(wdev))
12393                 return 0;
12394
12395         if (rfkill_blocked(rdev->rfkill))
12396                 return -ERFKILL;
12397
12398         err = rdev_start_p2p_device(rdev, wdev);
12399         if (err)
12400                 return err;
12401
12402         wdev->is_running = true;
12403         rdev->opencount++;
12404
12405         return 0;
12406 }
12407
12408 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info)
12409 {
12410         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12411         struct wireless_dev *wdev = info->user_ptr[1];
12412
12413         if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
12414                 return -EOPNOTSUPP;
12415
12416         if (!rdev->ops->stop_p2p_device)
12417                 return -EOPNOTSUPP;
12418
12419         cfg80211_stop_p2p_device(rdev, wdev);
12420
12421         return 0;
12422 }
12423
12424 static int nl80211_start_nan(struct sk_buff *skb, struct genl_info *info)
12425 {
12426         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12427         struct wireless_dev *wdev = info->user_ptr[1];
12428         struct cfg80211_nan_conf conf = {};
12429         int err;
12430
12431         if (wdev->iftype != NL80211_IFTYPE_NAN)
12432                 return -EOPNOTSUPP;
12433
12434         if (wdev_running(wdev))
12435                 return -EEXIST;
12436
12437         if (rfkill_blocked(rdev->rfkill))
12438                 return -ERFKILL;
12439
12440         if (!info->attrs[NL80211_ATTR_NAN_MASTER_PREF])
12441                 return -EINVAL;
12442
12443         conf.master_pref =
12444                 nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]);
12445
12446         if (info->attrs[NL80211_ATTR_BANDS]) {
12447                 u32 bands = nla_get_u32(info->attrs[NL80211_ATTR_BANDS]);
12448
12449                 if (bands & ~(u32)wdev->wiphy->nan_supported_bands)
12450                         return -EOPNOTSUPP;
12451
12452                 if (bands && !(bands & BIT(NL80211_BAND_2GHZ)))
12453                         return -EINVAL;
12454
12455                 conf.bands = bands;
12456         }
12457
12458         err = rdev_start_nan(rdev, wdev, &conf);
12459         if (err)
12460                 return err;
12461
12462         wdev->is_running = true;
12463         rdev->opencount++;
12464
12465         return 0;
12466 }
12467
12468 static int nl80211_stop_nan(struct sk_buff *skb, struct genl_info *info)
12469 {
12470         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12471         struct wireless_dev *wdev = info->user_ptr[1];
12472
12473         if (wdev->iftype != NL80211_IFTYPE_NAN)
12474                 return -EOPNOTSUPP;
12475
12476         cfg80211_stop_nan(rdev, wdev);
12477
12478         return 0;
12479 }
12480
12481 static int validate_nan_filter(struct nlattr *filter_attr)
12482 {
12483         struct nlattr *attr;
12484         int len = 0, n_entries = 0, rem;
12485
12486         nla_for_each_nested(attr, filter_attr, rem) {
12487                 len += nla_len(attr);
12488                 n_entries++;
12489         }
12490
12491         if (len >= U8_MAX)
12492                 return -EINVAL;
12493
12494         return n_entries;
12495 }
12496
12497 static int handle_nan_filter(struct nlattr *attr_filter,
12498                              struct cfg80211_nan_func *func,
12499                              bool tx)
12500 {
12501         struct nlattr *attr;
12502         int n_entries, rem, i;
12503         struct cfg80211_nan_func_filter *filter;
12504
12505         n_entries = validate_nan_filter(attr_filter);
12506         if (n_entries < 0)
12507                 return n_entries;
12508
12509         BUILD_BUG_ON(sizeof(*func->rx_filters) != sizeof(*func->tx_filters));
12510
12511         filter = kcalloc(n_entries, sizeof(*func->rx_filters), GFP_KERNEL);
12512         if (!filter)
12513                 return -ENOMEM;
12514
12515         i = 0;
12516         nla_for_each_nested(attr, attr_filter, rem) {
12517                 filter[i].filter = nla_memdup(attr, GFP_KERNEL);
12518                 filter[i].len = nla_len(attr);
12519                 i++;
12520         }
12521         if (tx) {
12522                 func->num_tx_filters = n_entries;
12523                 func->tx_filters = filter;
12524         } else {
12525                 func->num_rx_filters = n_entries;
12526                 func->rx_filters = filter;
12527         }
12528
12529         return 0;
12530 }
12531
12532 static int nl80211_nan_add_func(struct sk_buff *skb,
12533                                 struct genl_info *info)
12534 {
12535         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12536         struct wireless_dev *wdev = info->user_ptr[1];
12537         struct nlattr *tb[NUM_NL80211_NAN_FUNC_ATTR], *func_attr;
12538         struct cfg80211_nan_func *func;
12539         struct sk_buff *msg = NULL;
12540         void *hdr = NULL;
12541         int err = 0;
12542
12543         if (wdev->iftype != NL80211_IFTYPE_NAN)
12544                 return -EOPNOTSUPP;
12545
12546         if (!wdev_running(wdev))
12547                 return -ENOTCONN;
12548
12549         if (!info->attrs[NL80211_ATTR_NAN_FUNC])
12550                 return -EINVAL;
12551
12552         err = nla_parse_nested_deprecated(tb, NL80211_NAN_FUNC_ATTR_MAX,
12553                                           info->attrs[NL80211_ATTR_NAN_FUNC],
12554                                           nl80211_nan_func_policy,
12555                                           info->extack);
12556         if (err)
12557                 return err;
12558
12559         func = kzalloc(sizeof(*func), GFP_KERNEL);
12560         if (!func)
12561                 return -ENOMEM;
12562
12563         func->cookie = cfg80211_assign_cookie(rdev);
12564
12565         if (!tb[NL80211_NAN_FUNC_TYPE] ||
12566             nla_get_u8(tb[NL80211_NAN_FUNC_TYPE]) > NL80211_NAN_FUNC_MAX_TYPE) {
12567                 err = -EINVAL;
12568                 goto out;
12569         }
12570
12571
12572         func->type = nla_get_u8(tb[NL80211_NAN_FUNC_TYPE]);
12573
12574         if (!tb[NL80211_NAN_FUNC_SERVICE_ID]) {
12575                 err = -EINVAL;
12576                 goto out;
12577         }
12578
12579         memcpy(func->service_id, nla_data(tb[NL80211_NAN_FUNC_SERVICE_ID]),
12580                sizeof(func->service_id));
12581
12582         func->close_range =
12583                 nla_get_flag(tb[NL80211_NAN_FUNC_CLOSE_RANGE]);
12584
12585         if (tb[NL80211_NAN_FUNC_SERVICE_INFO]) {
12586                 func->serv_spec_info_len =
12587                         nla_len(tb[NL80211_NAN_FUNC_SERVICE_INFO]);
12588                 func->serv_spec_info =
12589                         kmemdup(nla_data(tb[NL80211_NAN_FUNC_SERVICE_INFO]),
12590                                 func->serv_spec_info_len,
12591                                 GFP_KERNEL);
12592                 if (!func->serv_spec_info) {
12593                         err = -ENOMEM;
12594                         goto out;
12595                 }
12596         }
12597
12598         if (tb[NL80211_NAN_FUNC_TTL])
12599                 func->ttl = nla_get_u32(tb[NL80211_NAN_FUNC_TTL]);
12600
12601         switch (func->type) {
12602         case NL80211_NAN_FUNC_PUBLISH:
12603                 if (!tb[NL80211_NAN_FUNC_PUBLISH_TYPE]) {
12604                         err = -EINVAL;
12605                         goto out;
12606                 }
12607
12608                 func->publish_type =
12609                         nla_get_u8(tb[NL80211_NAN_FUNC_PUBLISH_TYPE]);
12610                 func->publish_bcast =
12611                         nla_get_flag(tb[NL80211_NAN_FUNC_PUBLISH_BCAST]);
12612
12613                 if ((!(func->publish_type & NL80211_NAN_SOLICITED_PUBLISH)) &&
12614                         func->publish_bcast) {
12615                         err = -EINVAL;
12616                         goto out;
12617                 }
12618                 break;
12619         case NL80211_NAN_FUNC_SUBSCRIBE:
12620                 func->subscribe_active =
12621                         nla_get_flag(tb[NL80211_NAN_FUNC_SUBSCRIBE_ACTIVE]);
12622                 break;
12623         case NL80211_NAN_FUNC_FOLLOW_UP:
12624                 if (!tb[NL80211_NAN_FUNC_FOLLOW_UP_ID] ||
12625                     !tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID] ||
12626                     !tb[NL80211_NAN_FUNC_FOLLOW_UP_DEST]) {
12627                         err = -EINVAL;
12628                         goto out;
12629                 }
12630
12631                 func->followup_id =
12632                         nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_ID]);
12633                 func->followup_reqid =
12634                         nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID]);
12635                 memcpy(func->followup_dest.addr,
12636                        nla_data(tb[NL80211_NAN_FUNC_FOLLOW_UP_DEST]),
12637                        sizeof(func->followup_dest.addr));
12638                 if (func->ttl) {
12639                         err = -EINVAL;
12640                         goto out;
12641                 }
12642                 break;
12643         default:
12644                 err = -EINVAL;
12645                 goto out;
12646         }
12647
12648         if (tb[NL80211_NAN_FUNC_SRF]) {
12649                 struct nlattr *srf_tb[NUM_NL80211_NAN_SRF_ATTR];
12650
12651                 err = nla_parse_nested_deprecated(srf_tb,
12652                                                   NL80211_NAN_SRF_ATTR_MAX,
12653                                                   tb[NL80211_NAN_FUNC_SRF],
12654                                                   nl80211_nan_srf_policy,
12655                                                   info->extack);
12656                 if (err)
12657                         goto out;
12658
12659                 func->srf_include =
12660                         nla_get_flag(srf_tb[NL80211_NAN_SRF_INCLUDE]);
12661
12662                 if (srf_tb[NL80211_NAN_SRF_BF]) {
12663                         if (srf_tb[NL80211_NAN_SRF_MAC_ADDRS] ||
12664                             !srf_tb[NL80211_NAN_SRF_BF_IDX]) {
12665                                 err = -EINVAL;
12666                                 goto out;
12667                         }
12668
12669                         func->srf_bf_len =
12670                                 nla_len(srf_tb[NL80211_NAN_SRF_BF]);
12671                         func->srf_bf =
12672                                 kmemdup(nla_data(srf_tb[NL80211_NAN_SRF_BF]),
12673                                         func->srf_bf_len, GFP_KERNEL);
12674                         if (!func->srf_bf) {
12675                                 err = -ENOMEM;
12676                                 goto out;
12677                         }
12678
12679                         func->srf_bf_idx =
12680                                 nla_get_u8(srf_tb[NL80211_NAN_SRF_BF_IDX]);
12681                 } else {
12682                         struct nlattr *attr, *mac_attr =
12683                                 srf_tb[NL80211_NAN_SRF_MAC_ADDRS];
12684                         int n_entries, rem, i = 0;
12685
12686                         if (!mac_attr) {
12687                                 err = -EINVAL;
12688                                 goto out;
12689                         }
12690
12691                         n_entries = validate_acl_mac_addrs(mac_attr);
12692                         if (n_entries <= 0) {
12693                                 err = -EINVAL;
12694                                 goto out;
12695                         }
12696
12697                         func->srf_num_macs = n_entries;
12698                         func->srf_macs =
12699                                 kcalloc(n_entries, sizeof(*func->srf_macs),
12700                                         GFP_KERNEL);
12701                         if (!func->srf_macs) {
12702                                 err = -ENOMEM;
12703                                 goto out;
12704                         }
12705
12706                         nla_for_each_nested(attr, mac_attr, rem)
12707                                 memcpy(func->srf_macs[i++].addr, nla_data(attr),
12708                                        sizeof(*func->srf_macs));
12709                 }
12710         }
12711
12712         if (tb[NL80211_NAN_FUNC_TX_MATCH_FILTER]) {
12713                 err = handle_nan_filter(tb[NL80211_NAN_FUNC_TX_MATCH_FILTER],
12714                                         func, true);
12715                 if (err)
12716                         goto out;
12717         }
12718
12719         if (tb[NL80211_NAN_FUNC_RX_MATCH_FILTER]) {
12720                 err = handle_nan_filter(tb[NL80211_NAN_FUNC_RX_MATCH_FILTER],
12721                                         func, false);
12722                 if (err)
12723                         goto out;
12724         }
12725
12726         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12727         if (!msg) {
12728                 err = -ENOMEM;
12729                 goto out;
12730         }
12731
12732         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
12733                              NL80211_CMD_ADD_NAN_FUNCTION);
12734         /* This can't really happen - we just allocated 4KB */
12735         if (WARN_ON(!hdr)) {
12736                 err = -ENOMEM;
12737                 goto out;
12738         }
12739
12740         err = rdev_add_nan_func(rdev, wdev, func);
12741 out:
12742         if (err < 0) {
12743                 cfg80211_free_nan_func(func);
12744                 nlmsg_free(msg);
12745                 return err;
12746         }
12747
12748         /* propagate the instance id and cookie to userspace  */
12749         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, func->cookie,
12750                               NL80211_ATTR_PAD))
12751                 goto nla_put_failure;
12752
12753         func_attr = nla_nest_start_noflag(msg, NL80211_ATTR_NAN_FUNC);
12754         if (!func_attr)
12755                 goto nla_put_failure;
12756
12757         if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID,
12758                        func->instance_id))
12759                 goto nla_put_failure;
12760
12761         nla_nest_end(msg, func_attr);
12762
12763         genlmsg_end(msg, hdr);
12764         return genlmsg_reply(msg, info);
12765
12766 nla_put_failure:
12767         nlmsg_free(msg);
12768         return -ENOBUFS;
12769 }
12770
12771 static int nl80211_nan_del_func(struct sk_buff *skb,
12772                                struct genl_info *info)
12773 {
12774         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12775         struct wireless_dev *wdev = info->user_ptr[1];
12776         u64 cookie;
12777
12778         if (wdev->iftype != NL80211_IFTYPE_NAN)
12779                 return -EOPNOTSUPP;
12780
12781         if (!wdev_running(wdev))
12782                 return -ENOTCONN;
12783
12784         if (!info->attrs[NL80211_ATTR_COOKIE])
12785                 return -EINVAL;
12786
12787         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
12788
12789         rdev_del_nan_func(rdev, wdev, cookie);
12790
12791         return 0;
12792 }
12793
12794 static int nl80211_nan_change_config(struct sk_buff *skb,
12795                                      struct genl_info *info)
12796 {
12797         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12798         struct wireless_dev *wdev = info->user_ptr[1];
12799         struct cfg80211_nan_conf conf = {};
12800         u32 changed = 0;
12801
12802         if (wdev->iftype != NL80211_IFTYPE_NAN)
12803                 return -EOPNOTSUPP;
12804
12805         if (!wdev_running(wdev))
12806                 return -ENOTCONN;
12807
12808         if (info->attrs[NL80211_ATTR_NAN_MASTER_PREF]) {
12809                 conf.master_pref =
12810                         nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]);
12811                 if (conf.master_pref <= 1 || conf.master_pref == 255)
12812                         return -EINVAL;
12813
12814                 changed |= CFG80211_NAN_CONF_CHANGED_PREF;
12815         }
12816
12817         if (info->attrs[NL80211_ATTR_BANDS]) {
12818                 u32 bands = nla_get_u32(info->attrs[NL80211_ATTR_BANDS]);
12819
12820                 if (bands & ~(u32)wdev->wiphy->nan_supported_bands)
12821                         return -EOPNOTSUPP;
12822
12823                 if (bands && !(bands & BIT(NL80211_BAND_2GHZ)))
12824                         return -EINVAL;
12825
12826                 conf.bands = bands;
12827                 changed |= CFG80211_NAN_CONF_CHANGED_BANDS;
12828         }
12829
12830         if (!changed)
12831                 return -EINVAL;
12832
12833         return rdev_nan_change_conf(rdev, wdev, &conf, changed);
12834 }
12835
12836 void cfg80211_nan_match(struct wireless_dev *wdev,
12837                         struct cfg80211_nan_match_params *match, gfp_t gfp)
12838 {
12839         struct wiphy *wiphy = wdev->wiphy;
12840         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12841         struct nlattr *match_attr, *local_func_attr, *peer_func_attr;
12842         struct sk_buff *msg;
12843         void *hdr;
12844
12845         if (WARN_ON(!match->inst_id || !match->peer_inst_id || !match->addr))
12846                 return;
12847
12848         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12849         if (!msg)
12850                 return;
12851
12852         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NAN_MATCH);
12853         if (!hdr) {
12854                 nlmsg_free(msg);
12855                 return;
12856         }
12857
12858         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12859             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
12860                                          wdev->netdev->ifindex)) ||
12861             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
12862                               NL80211_ATTR_PAD))
12863                 goto nla_put_failure;
12864
12865         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, match->cookie,
12866                               NL80211_ATTR_PAD) ||
12867             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, match->addr))
12868                 goto nla_put_failure;
12869
12870         match_attr = nla_nest_start_noflag(msg, NL80211_ATTR_NAN_MATCH);
12871         if (!match_attr)
12872                 goto nla_put_failure;
12873
12874         local_func_attr = nla_nest_start_noflag(msg,
12875                                                 NL80211_NAN_MATCH_FUNC_LOCAL);
12876         if (!local_func_attr)
12877                 goto nla_put_failure;
12878
12879         if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->inst_id))
12880                 goto nla_put_failure;
12881
12882         nla_nest_end(msg, local_func_attr);
12883
12884         peer_func_attr = nla_nest_start_noflag(msg,
12885                                                NL80211_NAN_MATCH_FUNC_PEER);
12886         if (!peer_func_attr)
12887                 goto nla_put_failure;
12888
12889         if (nla_put_u8(msg, NL80211_NAN_FUNC_TYPE, match->type) ||
12890             nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->peer_inst_id))
12891                 goto nla_put_failure;
12892
12893         if (match->info && match->info_len &&
12894             nla_put(msg, NL80211_NAN_FUNC_SERVICE_INFO, match->info_len,
12895                     match->info))
12896                 goto nla_put_failure;
12897
12898         nla_nest_end(msg, peer_func_attr);
12899         nla_nest_end(msg, match_attr);
12900         genlmsg_end(msg, hdr);
12901
12902         if (!wdev->owner_nlportid)
12903                 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
12904                                         msg, 0, NL80211_MCGRP_NAN, gfp);
12905         else
12906                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
12907                                 wdev->owner_nlportid);
12908
12909         return;
12910
12911 nla_put_failure:
12912         nlmsg_free(msg);
12913 }
12914 EXPORT_SYMBOL(cfg80211_nan_match);
12915
12916 void cfg80211_nan_func_terminated(struct wireless_dev *wdev,
12917                                   u8 inst_id,
12918                                   enum nl80211_nan_func_term_reason reason,
12919                                   u64 cookie, gfp_t gfp)
12920 {
12921         struct wiphy *wiphy = wdev->wiphy;
12922         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12923         struct sk_buff *msg;
12924         struct nlattr *func_attr;
12925         void *hdr;
12926
12927         if (WARN_ON(!inst_id))
12928                 return;
12929
12930         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12931         if (!msg)
12932                 return;
12933
12934         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_NAN_FUNCTION);
12935         if (!hdr) {
12936                 nlmsg_free(msg);
12937                 return;
12938         }
12939
12940         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12941             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
12942                                          wdev->netdev->ifindex)) ||
12943             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
12944                               NL80211_ATTR_PAD))
12945                 goto nla_put_failure;
12946
12947         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
12948                               NL80211_ATTR_PAD))
12949                 goto nla_put_failure;
12950
12951         func_attr = nla_nest_start_noflag(msg, NL80211_ATTR_NAN_FUNC);
12952         if (!func_attr)
12953                 goto nla_put_failure;
12954
12955         if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, inst_id) ||
12956             nla_put_u8(msg, NL80211_NAN_FUNC_TERM_REASON, reason))
12957                 goto nla_put_failure;
12958
12959         nla_nest_end(msg, func_attr);
12960         genlmsg_end(msg, hdr);
12961
12962         if (!wdev->owner_nlportid)
12963                 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
12964                                         msg, 0, NL80211_MCGRP_NAN, gfp);
12965         else
12966                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
12967                                 wdev->owner_nlportid);
12968
12969         return;
12970
12971 nla_put_failure:
12972         nlmsg_free(msg);
12973 }
12974 EXPORT_SYMBOL(cfg80211_nan_func_terminated);
12975
12976 static int nl80211_get_protocol_features(struct sk_buff *skb,
12977                                          struct genl_info *info)
12978 {
12979         void *hdr;
12980         struct sk_buff *msg;
12981
12982         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12983         if (!msg)
12984                 return -ENOMEM;
12985
12986         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
12987                              NL80211_CMD_GET_PROTOCOL_FEATURES);
12988         if (!hdr)
12989                 goto nla_put_failure;
12990
12991         if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES,
12992                         NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP))
12993                 goto nla_put_failure;
12994
12995         genlmsg_end(msg, hdr);
12996         return genlmsg_reply(msg, info);
12997
12998  nla_put_failure:
12999         kfree_skb(msg);
13000         return -ENOBUFS;
13001 }
13002
13003 static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info)
13004 {
13005         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13006         struct cfg80211_update_ft_ies_params ft_params;
13007         struct net_device *dev = info->user_ptr[1];
13008
13009         if (!rdev->ops->update_ft_ies)
13010                 return -EOPNOTSUPP;
13011
13012         if (!info->attrs[NL80211_ATTR_MDID] ||
13013             !info->attrs[NL80211_ATTR_IE])
13014                 return -EINVAL;
13015
13016         memset(&ft_params, 0, sizeof(ft_params));
13017         ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]);
13018         ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
13019         ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
13020
13021         return rdev_update_ft_ies(rdev, dev, &ft_params);
13022 }
13023
13024 static int nl80211_crit_protocol_start(struct sk_buff *skb,
13025                                        struct genl_info *info)
13026 {
13027         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13028         struct wireless_dev *wdev = info->user_ptr[1];
13029         enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC;
13030         u16 duration;
13031         int ret;
13032
13033         if (!rdev->ops->crit_proto_start)
13034                 return -EOPNOTSUPP;
13035
13036         if (WARN_ON(!rdev->ops->crit_proto_stop))
13037                 return -EINVAL;
13038
13039         if (rdev->crit_proto_nlportid)
13040                 return -EBUSY;
13041
13042         /* determine protocol if provided */
13043         if (info->attrs[NL80211_ATTR_CRIT_PROT_ID])
13044                 proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]);
13045
13046         if (proto >= NUM_NL80211_CRIT_PROTO)
13047                 return -EINVAL;
13048
13049         /* timeout must be provided */
13050         if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION])
13051                 return -EINVAL;
13052
13053         duration =
13054                 nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]);
13055
13056         if (duration > NL80211_CRIT_PROTO_MAX_DURATION)
13057                 return -ERANGE;
13058
13059         ret = rdev_crit_proto_start(rdev, wdev, proto, duration);
13060         if (!ret)
13061                 rdev->crit_proto_nlportid = info->snd_portid;
13062
13063         return ret;
13064 }
13065
13066 static int nl80211_crit_protocol_stop(struct sk_buff *skb,
13067                                       struct genl_info *info)
13068 {
13069         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13070         struct wireless_dev *wdev = info->user_ptr[1];
13071
13072         if (!rdev->ops->crit_proto_stop)
13073                 return -EOPNOTSUPP;
13074
13075         if (rdev->crit_proto_nlportid) {
13076                 rdev->crit_proto_nlportid = 0;
13077                 rdev_crit_proto_stop(rdev, wdev);
13078         }
13079         return 0;
13080 }
13081
13082 static int nl80211_vendor_check_policy(const struct wiphy_vendor_command *vcmd,
13083                                        struct nlattr *attr,
13084                                        struct netlink_ext_ack *extack)
13085 {
13086         if (vcmd->policy == VENDOR_CMD_RAW_DATA) {
13087                 if (attr->nla_type & NLA_F_NESTED) {
13088                         NL_SET_ERR_MSG_ATTR(extack, attr,
13089                                             "unexpected nested data");
13090                         return -EINVAL;
13091                 }
13092
13093                 return 0;
13094         }
13095
13096         if (!(attr->nla_type & NLA_F_NESTED)) {
13097                 NL_SET_ERR_MSG_ATTR(extack, attr, "expected nested data");
13098                 return -EINVAL;
13099         }
13100
13101         return nla_validate_nested(attr, vcmd->maxattr, vcmd->policy, extack);
13102 }
13103
13104 static int nl80211_vendor_cmd(struct sk_buff *skb, struct genl_info *info)
13105 {
13106         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13107         struct wireless_dev *wdev =
13108                 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
13109         int i, err;
13110         u32 vid, subcmd;
13111
13112         if (!rdev->wiphy.vendor_commands)
13113                 return -EOPNOTSUPP;
13114
13115         if (IS_ERR(wdev)) {
13116                 err = PTR_ERR(wdev);
13117                 if (err != -EINVAL)
13118                         return err;
13119                 wdev = NULL;
13120         } else if (wdev->wiphy != &rdev->wiphy) {
13121                 return -EINVAL;
13122         }
13123
13124         if (!info->attrs[NL80211_ATTR_VENDOR_ID] ||
13125             !info->attrs[NL80211_ATTR_VENDOR_SUBCMD])
13126                 return -EINVAL;
13127
13128         vid = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_ID]);
13129         subcmd = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_SUBCMD]);
13130         for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
13131                 const struct wiphy_vendor_command *vcmd;
13132                 void *data = NULL;
13133                 int len = 0;
13134
13135                 vcmd = &rdev->wiphy.vendor_commands[i];
13136
13137                 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
13138                         continue;
13139
13140                 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
13141                                    WIPHY_VENDOR_CMD_NEED_NETDEV)) {
13142                         if (!wdev)
13143                                 return -EINVAL;
13144                         if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
13145                             !wdev->netdev)
13146                                 return -EINVAL;
13147
13148                         if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
13149                                 if (!wdev_running(wdev))
13150                                         return -ENETDOWN;
13151                         }
13152
13153                         if (!vcmd->doit)
13154                                 return -EOPNOTSUPP;
13155                 } else {
13156                         wdev = NULL;
13157                 }
13158
13159                 if (info->attrs[NL80211_ATTR_VENDOR_DATA]) {
13160                         data = nla_data(info->attrs[NL80211_ATTR_VENDOR_DATA]);
13161                         len = nla_len(info->attrs[NL80211_ATTR_VENDOR_DATA]);
13162
13163                         err = nl80211_vendor_check_policy(vcmd,
13164                                         info->attrs[NL80211_ATTR_VENDOR_DATA],
13165                                         info->extack);
13166                         if (err)
13167                                 return err;
13168                 }
13169
13170                 rdev->cur_cmd_info = info;
13171                 err = vcmd->doit(&rdev->wiphy, wdev, data, len);
13172                 rdev->cur_cmd_info = NULL;
13173                 return err;
13174         }
13175
13176         return -EOPNOTSUPP;
13177 }
13178
13179 static int nl80211_prepare_vendor_dump(struct sk_buff *skb,
13180                                        struct netlink_callback *cb,
13181                                        struct cfg80211_registered_device **rdev,
13182                                        struct wireless_dev **wdev)
13183 {
13184         struct nlattr **attrbuf;
13185         u32 vid, subcmd;
13186         unsigned int i;
13187         int vcmd_idx = -1;
13188         int err;
13189         void *data = NULL;
13190         unsigned int data_len = 0;
13191
13192         if (cb->args[0]) {
13193                 /* subtract the 1 again here */
13194                 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
13195                 struct wireless_dev *tmp;
13196
13197                 if (!wiphy)
13198                         return -ENODEV;
13199                 *rdev = wiphy_to_rdev(wiphy);
13200                 *wdev = NULL;
13201
13202                 if (cb->args[1]) {
13203                         list_for_each_entry(tmp, &wiphy->wdev_list, list) {
13204                                 if (tmp->identifier == cb->args[1] - 1) {
13205                                         *wdev = tmp;
13206                                         break;
13207                                 }
13208                         }
13209                 }
13210
13211                 /* keep rtnl locked in successful case */
13212                 return 0;
13213         }
13214
13215         attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf), GFP_KERNEL);
13216         if (!attrbuf)
13217                 return -ENOMEM;
13218
13219         err = nlmsg_parse_deprecated(cb->nlh,
13220                                      GENL_HDRLEN + nl80211_fam.hdrsize,
13221                                      attrbuf, nl80211_fam.maxattr,
13222                                      nl80211_policy, NULL);
13223         if (err)
13224                 goto out;
13225
13226         if (!attrbuf[NL80211_ATTR_VENDOR_ID] ||
13227             !attrbuf[NL80211_ATTR_VENDOR_SUBCMD]) {
13228                 err = -EINVAL;
13229                 goto out;
13230         }
13231
13232         *wdev = __cfg80211_wdev_from_attrs(sock_net(skb->sk), attrbuf);
13233         if (IS_ERR(*wdev))
13234                 *wdev = NULL;
13235
13236         *rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf);
13237         if (IS_ERR(*rdev)) {
13238                 err = PTR_ERR(*rdev);
13239                 goto out;
13240         }
13241
13242         vid = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_ID]);
13243         subcmd = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_SUBCMD]);
13244
13245         for (i = 0; i < (*rdev)->wiphy.n_vendor_commands; i++) {
13246                 const struct wiphy_vendor_command *vcmd;
13247
13248                 vcmd = &(*rdev)->wiphy.vendor_commands[i];
13249
13250                 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
13251                         continue;
13252
13253                 if (!vcmd->dumpit) {
13254                         err = -EOPNOTSUPP;
13255                         goto out;
13256                 }
13257
13258                 vcmd_idx = i;
13259                 break;
13260         }
13261
13262         if (vcmd_idx < 0) {
13263                 err = -EOPNOTSUPP;
13264                 goto out;
13265         }
13266
13267         if (attrbuf[NL80211_ATTR_VENDOR_DATA]) {
13268                 data = nla_data(attrbuf[NL80211_ATTR_VENDOR_DATA]);
13269                 data_len = nla_len(attrbuf[NL80211_ATTR_VENDOR_DATA]);
13270
13271                 err = nl80211_vendor_check_policy(
13272                                 &(*rdev)->wiphy.vendor_commands[vcmd_idx],
13273                                 attrbuf[NL80211_ATTR_VENDOR_DATA],
13274                                 cb->extack);
13275                 if (err)
13276                         goto out;
13277         }
13278
13279         /* 0 is the first index - add 1 to parse only once */
13280         cb->args[0] = (*rdev)->wiphy_idx + 1;
13281         /* add 1 to know if it was NULL */
13282         cb->args[1] = *wdev ? (*wdev)->identifier + 1 : 0;
13283         cb->args[2] = vcmd_idx;
13284         cb->args[3] = (unsigned long)data;
13285         cb->args[4] = data_len;
13286
13287         /* keep rtnl locked in successful case */
13288         err = 0;
13289 out:
13290         kfree(attrbuf);
13291         return err;
13292 }
13293
13294 static int nl80211_vendor_cmd_dump(struct sk_buff *skb,
13295                                    struct netlink_callback *cb)
13296 {
13297         struct cfg80211_registered_device *rdev;
13298         struct wireless_dev *wdev;
13299         unsigned int vcmd_idx;
13300         const struct wiphy_vendor_command *vcmd;
13301         void *data;
13302         int data_len;
13303         int err;
13304         struct nlattr *vendor_data;
13305
13306         rtnl_lock();
13307         err = nl80211_prepare_vendor_dump(skb, cb, &rdev, &wdev);
13308         if (err)
13309                 goto out;
13310
13311         vcmd_idx = cb->args[2];
13312         data = (void *)cb->args[3];
13313         data_len = cb->args[4];
13314         vcmd = &rdev->wiphy.vendor_commands[vcmd_idx];
13315
13316         if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
13317                            WIPHY_VENDOR_CMD_NEED_NETDEV)) {
13318                 if (!wdev) {
13319                         err = -EINVAL;
13320                         goto out;
13321                 }
13322                 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
13323                     !wdev->netdev) {
13324                         err = -EINVAL;
13325                         goto out;
13326                 }
13327
13328                 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
13329                         if (!wdev_running(wdev)) {
13330                                 err = -ENETDOWN;
13331                                 goto out;
13332                         }
13333                 }
13334         }
13335
13336         while (1) {
13337                 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
13338                                            cb->nlh->nlmsg_seq, NLM_F_MULTI,
13339                                            NL80211_CMD_VENDOR);
13340                 if (!hdr)
13341                         break;
13342
13343                 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13344                     (wdev && nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
13345                                                wdev_id(wdev),
13346                                                NL80211_ATTR_PAD))) {
13347                         genlmsg_cancel(skb, hdr);
13348                         break;
13349                 }
13350
13351                 vendor_data = nla_nest_start_noflag(skb,
13352                                                     NL80211_ATTR_VENDOR_DATA);
13353                 if (!vendor_data) {
13354                         genlmsg_cancel(skb, hdr);
13355                         break;
13356                 }
13357
13358                 err = vcmd->dumpit(&rdev->wiphy, wdev, skb, data, data_len,
13359                                    (unsigned long *)&cb->args[5]);
13360                 nla_nest_end(skb, vendor_data);
13361
13362                 if (err == -ENOBUFS || err == -ENOENT) {
13363                         genlmsg_cancel(skb, hdr);
13364                         break;
13365                 } else if (err) {
13366                         genlmsg_cancel(skb, hdr);
13367                         goto out;
13368                 }
13369
13370                 genlmsg_end(skb, hdr);
13371         }
13372
13373         err = skb->len;
13374  out:
13375         rtnl_unlock();
13376         return err;
13377 }
13378
13379 struct sk_buff *__cfg80211_alloc_reply_skb(struct wiphy *wiphy,
13380                                            enum nl80211_commands cmd,
13381                                            enum nl80211_attrs attr,
13382                                            int approxlen)
13383 {
13384         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13385
13386         if (WARN_ON(!rdev->cur_cmd_info))
13387                 return NULL;
13388
13389         return __cfg80211_alloc_vendor_skb(rdev, NULL, approxlen,
13390                                            rdev->cur_cmd_info->snd_portid,
13391                                            rdev->cur_cmd_info->snd_seq,
13392                                            cmd, attr, NULL, GFP_KERNEL);
13393 }
13394 EXPORT_SYMBOL(__cfg80211_alloc_reply_skb);
13395
13396 int cfg80211_vendor_cmd_reply(struct sk_buff *skb)
13397 {
13398         struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
13399         void *hdr = ((void **)skb->cb)[1];
13400         struct nlattr *data = ((void **)skb->cb)[2];
13401
13402         /* clear CB data for netlink core to own from now on */
13403         memset(skb->cb, 0, sizeof(skb->cb));
13404
13405         if (WARN_ON(!rdev->cur_cmd_info)) {
13406                 kfree_skb(skb);
13407                 return -EINVAL;
13408         }
13409
13410         nla_nest_end(skb, data);
13411         genlmsg_end(skb, hdr);
13412         return genlmsg_reply(skb, rdev->cur_cmd_info);
13413 }
13414 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_reply);
13415
13416 unsigned int cfg80211_vendor_cmd_get_sender(struct wiphy *wiphy)
13417 {
13418         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13419
13420         if (WARN_ON(!rdev->cur_cmd_info))
13421                 return 0;
13422
13423         return rdev->cur_cmd_info->snd_portid;
13424 }
13425 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_get_sender);
13426
13427 static int nl80211_set_qos_map(struct sk_buff *skb,
13428                                struct genl_info *info)
13429 {
13430         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13431         struct cfg80211_qos_map *qos_map = NULL;
13432         struct net_device *dev = info->user_ptr[1];
13433         u8 *pos, len, num_des, des_len, des;
13434         int ret;
13435
13436         if (!rdev->ops->set_qos_map)
13437                 return -EOPNOTSUPP;
13438
13439         if (info->attrs[NL80211_ATTR_QOS_MAP]) {
13440                 pos = nla_data(info->attrs[NL80211_ATTR_QOS_MAP]);
13441                 len = nla_len(info->attrs[NL80211_ATTR_QOS_MAP]);
13442
13443                 if (len % 2 || len < IEEE80211_QOS_MAP_LEN_MIN ||
13444                     len > IEEE80211_QOS_MAP_LEN_MAX)
13445                         return -EINVAL;
13446
13447                 qos_map = kzalloc(sizeof(struct cfg80211_qos_map), GFP_KERNEL);
13448                 if (!qos_map)
13449                         return -ENOMEM;
13450
13451                 num_des = (len - IEEE80211_QOS_MAP_LEN_MIN) >> 1;
13452                 if (num_des) {
13453                         des_len = num_des *
13454                                 sizeof(struct cfg80211_dscp_exception);
13455                         memcpy(qos_map->dscp_exception, pos, des_len);
13456                         qos_map->num_des = num_des;
13457                         for (des = 0; des < num_des; des++) {
13458                                 if (qos_map->dscp_exception[des].up > 7) {
13459                                         kfree(qos_map);
13460                                         return -EINVAL;
13461                                 }
13462                         }
13463                         pos += des_len;
13464                 }
13465                 memcpy(qos_map->up, pos, IEEE80211_QOS_MAP_LEN_MIN);
13466         }
13467
13468         wdev_lock(dev->ieee80211_ptr);
13469         ret = nl80211_key_allowed(dev->ieee80211_ptr);
13470         if (!ret)
13471                 ret = rdev_set_qos_map(rdev, dev, qos_map);
13472         wdev_unlock(dev->ieee80211_ptr);
13473
13474         kfree(qos_map);
13475         return ret;
13476 }
13477
13478 static int nl80211_add_tx_ts(struct sk_buff *skb, struct genl_info *info)
13479 {
13480         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13481         struct net_device *dev = info->user_ptr[1];
13482         struct wireless_dev *wdev = dev->ieee80211_ptr;
13483         const u8 *peer;
13484         u8 tsid, up;
13485         u16 admitted_time = 0;
13486         int err;
13487
13488         if (!(rdev->wiphy.features & NL80211_FEATURE_SUPPORTS_WMM_ADMISSION))
13489                 return -EOPNOTSUPP;
13490
13491         if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC] ||
13492             !info->attrs[NL80211_ATTR_USER_PRIO])
13493                 return -EINVAL;
13494
13495         tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
13496         up = nla_get_u8(info->attrs[NL80211_ATTR_USER_PRIO]);
13497
13498         /* WMM uses TIDs 0-7 even for TSPEC */
13499         if (tsid >= IEEE80211_FIRST_TSPEC_TSID) {
13500                 /* TODO: handle 802.11 TSPEC/admission control
13501                  * need more attributes for that (e.g. BA session requirement);
13502                  * change the WMM adminssion test above to allow both then
13503                  */
13504                 return -EINVAL;
13505         }
13506
13507         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
13508
13509         if (info->attrs[NL80211_ATTR_ADMITTED_TIME]) {
13510                 admitted_time =
13511                         nla_get_u16(info->attrs[NL80211_ATTR_ADMITTED_TIME]);
13512                 if (!admitted_time)
13513                         return -EINVAL;
13514         }
13515
13516         wdev_lock(wdev);
13517         switch (wdev->iftype) {
13518         case NL80211_IFTYPE_STATION:
13519         case NL80211_IFTYPE_P2P_CLIENT:
13520                 if (wdev->current_bss)
13521                         break;
13522                 err = -ENOTCONN;
13523                 goto out;
13524         default:
13525                 err = -EOPNOTSUPP;
13526                 goto out;
13527         }
13528
13529         err = rdev_add_tx_ts(rdev, dev, tsid, peer, up, admitted_time);
13530
13531  out:
13532         wdev_unlock(wdev);
13533         return err;
13534 }
13535
13536 static int nl80211_del_tx_ts(struct sk_buff *skb, struct genl_info *info)
13537 {
13538         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13539         struct net_device *dev = info->user_ptr[1];
13540         struct wireless_dev *wdev = dev->ieee80211_ptr;
13541         const u8 *peer;
13542         u8 tsid;
13543         int err;
13544
13545         if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC])
13546                 return -EINVAL;
13547
13548         tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
13549         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
13550
13551         wdev_lock(wdev);
13552         err = rdev_del_tx_ts(rdev, dev, tsid, peer);
13553         wdev_unlock(wdev);
13554
13555         return err;
13556 }
13557
13558 static int nl80211_tdls_channel_switch(struct sk_buff *skb,
13559                                        struct genl_info *info)
13560 {
13561         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13562         struct net_device *dev = info->user_ptr[1];
13563         struct wireless_dev *wdev = dev->ieee80211_ptr;
13564         struct cfg80211_chan_def chandef = {};
13565         const u8 *addr;
13566         u8 oper_class;
13567         int err;
13568
13569         if (!rdev->ops->tdls_channel_switch ||
13570             !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
13571                 return -EOPNOTSUPP;
13572
13573         switch (dev->ieee80211_ptr->iftype) {
13574         case NL80211_IFTYPE_STATION:
13575         case NL80211_IFTYPE_P2P_CLIENT:
13576                 break;
13577         default:
13578                 return -EOPNOTSUPP;
13579         }
13580
13581         if (!info->attrs[NL80211_ATTR_MAC] ||
13582             !info->attrs[NL80211_ATTR_OPER_CLASS])
13583                 return -EINVAL;
13584
13585         err = nl80211_parse_chandef(rdev, info, &chandef);
13586         if (err)
13587                 return err;
13588
13589         /*
13590          * Don't allow wide channels on the 2.4Ghz band, as per IEEE802.11-2012
13591          * section 10.22.6.2.1. Disallow 5/10Mhz channels as well for now, the
13592          * specification is not defined for them.
13593          */
13594         if (chandef.chan->band == NL80211_BAND_2GHZ &&
13595             chandef.width != NL80211_CHAN_WIDTH_20_NOHT &&
13596             chandef.width != NL80211_CHAN_WIDTH_20)
13597                 return -EINVAL;
13598
13599         /* we will be active on the TDLS link */
13600         if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
13601                                            wdev->iftype))
13602                 return -EINVAL;
13603
13604         /* don't allow switching to DFS channels */
13605         if (cfg80211_chandef_dfs_required(wdev->wiphy, &chandef, wdev->iftype))
13606                 return -EINVAL;
13607
13608         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
13609         oper_class = nla_get_u8(info->attrs[NL80211_ATTR_OPER_CLASS]);
13610
13611         wdev_lock(wdev);
13612         err = rdev_tdls_channel_switch(rdev, dev, addr, oper_class, &chandef);
13613         wdev_unlock(wdev);
13614
13615         return err;
13616 }
13617
13618 static int nl80211_tdls_cancel_channel_switch(struct sk_buff *skb,
13619                                               struct genl_info *info)
13620 {
13621         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13622         struct net_device *dev = info->user_ptr[1];
13623         struct wireless_dev *wdev = dev->ieee80211_ptr;
13624         const u8 *addr;
13625
13626         if (!rdev->ops->tdls_channel_switch ||
13627             !rdev->ops->tdls_cancel_channel_switch ||
13628             !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
13629                 return -EOPNOTSUPP;
13630
13631         switch (dev->ieee80211_ptr->iftype) {
13632         case NL80211_IFTYPE_STATION:
13633         case NL80211_IFTYPE_P2P_CLIENT:
13634                 break;
13635         default:
13636                 return -EOPNOTSUPP;
13637         }
13638
13639         if (!info->attrs[NL80211_ATTR_MAC])
13640                 return -EINVAL;
13641
13642         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
13643
13644         wdev_lock(wdev);
13645         rdev_tdls_cancel_channel_switch(rdev, dev, addr);
13646         wdev_unlock(wdev);
13647
13648         return 0;
13649 }
13650
13651 static int nl80211_set_multicast_to_unicast(struct sk_buff *skb,
13652                                             struct genl_info *info)
13653 {
13654         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13655         struct net_device *dev = info->user_ptr[1];
13656         struct wireless_dev *wdev = dev->ieee80211_ptr;
13657         const struct nlattr *nla;
13658         bool enabled;
13659
13660         if (!rdev->ops->set_multicast_to_unicast)
13661                 return -EOPNOTSUPP;
13662
13663         if (wdev->iftype != NL80211_IFTYPE_AP &&
13664             wdev->iftype != NL80211_IFTYPE_P2P_GO)
13665                 return -EOPNOTSUPP;
13666
13667         nla = info->attrs[NL80211_ATTR_MULTICAST_TO_UNICAST_ENABLED];
13668         enabled = nla_get_flag(nla);
13669
13670         return rdev_set_multicast_to_unicast(rdev, dev, enabled);
13671 }
13672
13673 static int nl80211_set_pmk(struct sk_buff *skb, struct genl_info *info)
13674 {
13675         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13676         struct net_device *dev = info->user_ptr[1];
13677         struct wireless_dev *wdev = dev->ieee80211_ptr;
13678         struct cfg80211_pmk_conf pmk_conf = {};
13679         int ret;
13680
13681         if (wdev->iftype != NL80211_IFTYPE_STATION &&
13682             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
13683                 return -EOPNOTSUPP;
13684
13685         if (!wiphy_ext_feature_isset(&rdev->wiphy,
13686                                      NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
13687                 return -EOPNOTSUPP;
13688
13689         if (!info->attrs[NL80211_ATTR_MAC] || !info->attrs[NL80211_ATTR_PMK])
13690                 return -EINVAL;
13691
13692         wdev_lock(wdev);
13693         if (!wdev->current_bss) {
13694                 ret = -ENOTCONN;
13695                 goto out;
13696         }
13697
13698         pmk_conf.aa = nla_data(info->attrs[NL80211_ATTR_MAC]);
13699         if (memcmp(pmk_conf.aa, wdev->current_bss->pub.bssid, ETH_ALEN)) {
13700                 ret = -EINVAL;
13701                 goto out;
13702         }
13703
13704         pmk_conf.pmk = nla_data(info->attrs[NL80211_ATTR_PMK]);
13705         pmk_conf.pmk_len = nla_len(info->attrs[NL80211_ATTR_PMK]);
13706         if (pmk_conf.pmk_len != WLAN_PMK_LEN &&
13707             pmk_conf.pmk_len != WLAN_PMK_LEN_SUITE_B_192) {
13708                 ret = -EINVAL;
13709                 goto out;
13710         }
13711
13712         if (info->attrs[NL80211_ATTR_PMKR0_NAME]) {
13713                 int r0_name_len = nla_len(info->attrs[NL80211_ATTR_PMKR0_NAME]);
13714
13715                 if (r0_name_len != WLAN_PMK_NAME_LEN) {
13716                         ret = -EINVAL;
13717                         goto out;
13718                 }
13719
13720                 pmk_conf.pmk_r0_name =
13721                         nla_data(info->attrs[NL80211_ATTR_PMKR0_NAME]);
13722         }
13723
13724         ret = rdev_set_pmk(rdev, dev, &pmk_conf);
13725 out:
13726         wdev_unlock(wdev);
13727         return ret;
13728 }
13729
13730 static int nl80211_del_pmk(struct sk_buff *skb, struct genl_info *info)
13731 {
13732         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13733         struct net_device *dev = info->user_ptr[1];
13734         struct wireless_dev *wdev = dev->ieee80211_ptr;
13735         const u8 *aa;
13736         int ret;
13737
13738         if (wdev->iftype != NL80211_IFTYPE_STATION &&
13739             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
13740                 return -EOPNOTSUPP;
13741
13742         if (!wiphy_ext_feature_isset(&rdev->wiphy,
13743                                      NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
13744                 return -EOPNOTSUPP;
13745
13746         if (!info->attrs[NL80211_ATTR_MAC])
13747                 return -EINVAL;
13748
13749         wdev_lock(wdev);
13750         aa = nla_data(info->attrs[NL80211_ATTR_MAC]);
13751         ret = rdev_del_pmk(rdev, dev, aa);
13752         wdev_unlock(wdev);
13753
13754         return ret;
13755 }
13756
13757 static int nl80211_external_auth(struct sk_buff *skb, struct genl_info *info)
13758 {
13759         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13760         struct net_device *dev = info->user_ptr[1];
13761         struct cfg80211_external_auth_params params;
13762
13763         if (!rdev->ops->external_auth)
13764                 return -EOPNOTSUPP;
13765
13766         if (!info->attrs[NL80211_ATTR_SSID] &&
13767             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
13768             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
13769                 return -EINVAL;
13770
13771         if (!info->attrs[NL80211_ATTR_BSSID])
13772                 return -EINVAL;
13773
13774         if (!info->attrs[NL80211_ATTR_STATUS_CODE])
13775                 return -EINVAL;
13776
13777         memset(&params, 0, sizeof(params));
13778
13779         if (info->attrs[NL80211_ATTR_SSID]) {
13780                 params.ssid.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
13781                 if (params.ssid.ssid_len == 0 ||
13782                     params.ssid.ssid_len > IEEE80211_MAX_SSID_LEN)
13783                         return -EINVAL;
13784                 memcpy(params.ssid.ssid,
13785                        nla_data(info->attrs[NL80211_ATTR_SSID]),
13786                        params.ssid.ssid_len);
13787         }
13788
13789         memcpy(params.bssid, nla_data(info->attrs[NL80211_ATTR_BSSID]),
13790                ETH_ALEN);
13791
13792         params.status = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
13793
13794         if (info->attrs[NL80211_ATTR_PMKID])
13795                 params.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
13796
13797         return rdev_external_auth(rdev, dev, &params);
13798 }
13799
13800 static int nl80211_tx_control_port(struct sk_buff *skb, struct genl_info *info)
13801 {
13802         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13803         struct net_device *dev = info->user_ptr[1];
13804         struct wireless_dev *wdev = dev->ieee80211_ptr;
13805         const u8 *buf;
13806         size_t len;
13807         u8 *dest;
13808         u16 proto;
13809         bool noencrypt;
13810         int err;
13811
13812         if (!wiphy_ext_feature_isset(&rdev->wiphy,
13813                                      NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211))
13814                 return -EOPNOTSUPP;
13815
13816         if (!rdev->ops->tx_control_port)
13817                 return -EOPNOTSUPP;
13818
13819         if (!info->attrs[NL80211_ATTR_FRAME] ||
13820             !info->attrs[NL80211_ATTR_MAC] ||
13821             !info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
13822                 GENL_SET_ERR_MSG(info, "Frame, MAC or ethertype missing");
13823                 return -EINVAL;
13824         }
13825
13826         wdev_lock(wdev);
13827
13828         switch (wdev->iftype) {
13829         case NL80211_IFTYPE_AP:
13830         case NL80211_IFTYPE_P2P_GO:
13831         case NL80211_IFTYPE_MESH_POINT:
13832                 break;
13833         case NL80211_IFTYPE_ADHOC:
13834         case NL80211_IFTYPE_STATION:
13835         case NL80211_IFTYPE_P2P_CLIENT:
13836                 if (wdev->current_bss)
13837                         break;
13838                 err = -ENOTCONN;
13839                 goto out;
13840         default:
13841                 err = -EOPNOTSUPP;
13842                 goto out;
13843         }
13844
13845         wdev_unlock(wdev);
13846
13847         buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
13848         len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
13849         dest = nla_data(info->attrs[NL80211_ATTR_MAC]);
13850         proto = nla_get_u16(info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
13851         noencrypt =
13852                 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT]);
13853
13854         return rdev_tx_control_port(rdev, dev, buf, len,
13855                                     dest, cpu_to_be16(proto), noencrypt);
13856
13857  out:
13858         wdev_unlock(wdev);
13859         return err;
13860 }
13861
13862 static int nl80211_get_ftm_responder_stats(struct sk_buff *skb,
13863                                            struct genl_info *info)
13864 {
13865         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13866         struct net_device *dev = info->user_ptr[1];
13867         struct wireless_dev *wdev = dev->ieee80211_ptr;
13868         struct cfg80211_ftm_responder_stats ftm_stats = {};
13869         struct sk_buff *msg;
13870         void *hdr;
13871         struct nlattr *ftm_stats_attr;
13872         int err;
13873
13874         if (wdev->iftype != NL80211_IFTYPE_AP || !wdev->beacon_interval)
13875                 return -EOPNOTSUPP;
13876
13877         err = rdev_get_ftm_responder_stats(rdev, dev, &ftm_stats);
13878         if (err)
13879                 return err;
13880
13881         if (!ftm_stats.filled)
13882                 return -ENODATA;
13883
13884         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13885         if (!msg)
13886                 return -ENOMEM;
13887
13888         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
13889                              NL80211_CMD_GET_FTM_RESPONDER_STATS);
13890         if (!hdr)
13891                 goto nla_put_failure;
13892
13893         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
13894                 goto nla_put_failure;
13895
13896         ftm_stats_attr = nla_nest_start_noflag(msg,
13897                                                NL80211_ATTR_FTM_RESPONDER_STATS);
13898         if (!ftm_stats_attr)
13899                 goto nla_put_failure;
13900
13901 #define SET_FTM(field, name, type)                                       \
13902         do { if ((ftm_stats.filled & BIT(NL80211_FTM_STATS_ ## name)) && \
13903             nla_put_ ## type(msg, NL80211_FTM_STATS_ ## name,            \
13904                              ftm_stats.field))                           \
13905                 goto nla_put_failure; } while (0)
13906 #define SET_FTM_U64(field, name)                                         \
13907         do { if ((ftm_stats.filled & BIT(NL80211_FTM_STATS_ ## name)) && \
13908             nla_put_u64_64bit(msg, NL80211_FTM_STATS_ ## name,           \
13909                               ftm_stats.field, NL80211_FTM_STATS_PAD))   \
13910                 goto nla_put_failure; } while (0)
13911
13912         SET_FTM(success_num, SUCCESS_NUM, u32);
13913         SET_FTM(partial_num, PARTIAL_NUM, u32);
13914         SET_FTM(failed_num, FAILED_NUM, u32);
13915         SET_FTM(asap_num, ASAP_NUM, u32);
13916         SET_FTM(non_asap_num, NON_ASAP_NUM, u32);
13917         SET_FTM_U64(total_duration_ms, TOTAL_DURATION_MSEC);
13918         SET_FTM(unknown_triggers_num, UNKNOWN_TRIGGERS_NUM, u32);
13919         SET_FTM(reschedule_requests_num, RESCHEDULE_REQUESTS_NUM, u32);
13920         SET_FTM(out_of_window_triggers_num, OUT_OF_WINDOW_TRIGGERS_NUM, u32);
13921 #undef SET_FTM
13922
13923         nla_nest_end(msg, ftm_stats_attr);
13924
13925         genlmsg_end(msg, hdr);
13926         return genlmsg_reply(msg, info);
13927
13928 nla_put_failure:
13929         nlmsg_free(msg);
13930         return -ENOBUFS;
13931 }
13932
13933 static int nl80211_update_owe_info(struct sk_buff *skb, struct genl_info *info)
13934 {
13935         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13936         struct cfg80211_update_owe_info owe_info;
13937         struct net_device *dev = info->user_ptr[1];
13938
13939         if (!rdev->ops->update_owe_info)
13940                 return -EOPNOTSUPP;
13941
13942         if (!info->attrs[NL80211_ATTR_STATUS_CODE] ||
13943             !info->attrs[NL80211_ATTR_MAC])
13944                 return -EINVAL;
13945
13946         memset(&owe_info, 0, sizeof(owe_info));
13947         owe_info.status = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
13948         nla_memcpy(owe_info.peer, info->attrs[NL80211_ATTR_MAC], ETH_ALEN);
13949
13950         if (info->attrs[NL80211_ATTR_IE]) {
13951                 owe_info.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
13952                 owe_info.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
13953         }
13954
13955         return rdev_update_owe_info(rdev, dev, &owe_info);
13956 }
13957
13958 static int nl80211_probe_mesh_link(struct sk_buff *skb, struct genl_info *info)
13959 {
13960         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13961         struct net_device *dev = info->user_ptr[1];
13962         struct wireless_dev *wdev = dev->ieee80211_ptr;
13963         struct station_info sinfo = {};
13964         const u8 *buf;
13965         size_t len;
13966         u8 *dest;
13967         int err;
13968
13969         if (!rdev->ops->probe_mesh_link || !rdev->ops->get_station)
13970                 return -EOPNOTSUPP;
13971
13972         if (!info->attrs[NL80211_ATTR_MAC] ||
13973             !info->attrs[NL80211_ATTR_FRAME]) {
13974                 GENL_SET_ERR_MSG(info, "Frame or MAC missing");
13975                 return -EINVAL;
13976         }
13977
13978         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
13979                 return -EOPNOTSUPP;
13980
13981         dest = nla_data(info->attrs[NL80211_ATTR_MAC]);
13982         buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
13983         len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
13984
13985         if (len < sizeof(struct ethhdr))
13986                 return -EINVAL;
13987
13988         if (!ether_addr_equal(buf, dest) || is_multicast_ether_addr(buf) ||
13989             !ether_addr_equal(buf + ETH_ALEN, dev->dev_addr))
13990                 return -EINVAL;
13991
13992         err = rdev_get_station(rdev, dev, dest, &sinfo);
13993         if (err)
13994                 return err;
13995
13996         cfg80211_sinfo_release_content(&sinfo);
13997
13998         return rdev_probe_mesh_link(rdev, dev, dest, buf, len);
13999 }
14000
14001 static int parse_tid_conf(struct cfg80211_registered_device *rdev,
14002                           struct nlattr *attrs[], struct net_device *dev,
14003                           struct cfg80211_tid_cfg *tid_conf,
14004                           struct genl_info *info, const u8 *peer)
14005 {
14006         struct netlink_ext_ack *extack = info->extack;
14007         u64 mask;
14008         int err;
14009
14010         if (!attrs[NL80211_TID_CONFIG_ATTR_TIDS])
14011                 return -EINVAL;
14012
14013         tid_conf->config_override =
14014                         nla_get_flag(attrs[NL80211_TID_CONFIG_ATTR_OVERRIDE]);
14015         tid_conf->tids = nla_get_u16(attrs[NL80211_TID_CONFIG_ATTR_TIDS]);
14016
14017         if (tid_conf->config_override) {
14018                 if (rdev->ops->reset_tid_config) {
14019                         err = rdev_reset_tid_config(rdev, dev, peer,
14020                                                     tid_conf->tids);
14021                         /* If peer is there no other configuration will be
14022                          * allowed
14023                          */
14024                         if (err || peer)
14025                                 return err;
14026                 } else {
14027                         return -EINVAL;
14028                 }
14029         }
14030
14031         if (attrs[NL80211_TID_CONFIG_ATTR_NOACK]) {
14032                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_NOACK);
14033                 tid_conf->noack =
14034                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_NOACK]);
14035         }
14036
14037         if (attrs[NL80211_TID_CONFIG_ATTR_RETRY_SHORT]) {
14038                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_RETRY_SHORT);
14039                 tid_conf->retry_short =
14040                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_RETRY_SHORT]);
14041
14042                 if (tid_conf->retry_short > rdev->wiphy.max_data_retry_count)
14043                         return -EINVAL;
14044         }
14045
14046         if (attrs[NL80211_TID_CONFIG_ATTR_RETRY_LONG]) {
14047                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_RETRY_LONG);
14048                 tid_conf->retry_long =
14049                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_RETRY_LONG]);
14050
14051                 if (tid_conf->retry_long > rdev->wiphy.max_data_retry_count)
14052                         return -EINVAL;
14053         }
14054
14055         if (attrs[NL80211_TID_CONFIG_ATTR_AMPDU_CTRL]) {
14056                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_AMPDU_CTRL);
14057                 tid_conf->ampdu =
14058                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_AMPDU_CTRL]);
14059         }
14060
14061         if (attrs[NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL]) {
14062                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL);
14063                 tid_conf->rtscts =
14064                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL]);
14065         }
14066
14067         if (peer)
14068                 mask = rdev->wiphy.tid_config_support.peer;
14069         else
14070                 mask = rdev->wiphy.tid_config_support.vif;
14071
14072         if (tid_conf->mask & ~mask) {
14073                 NL_SET_ERR_MSG(extack, "unsupported TID configuration");
14074                 return -ENOTSUPP;
14075         }
14076
14077         return 0;
14078 }
14079
14080 static int nl80211_set_tid_config(struct sk_buff *skb,
14081                                   struct genl_info *info)
14082 {
14083         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14084         struct nlattr *attrs[NL80211_TID_CONFIG_ATTR_MAX + 1];
14085         struct net_device *dev = info->user_ptr[1];
14086         struct cfg80211_tid_config *tid_config;
14087         struct nlattr *tid;
14088         int conf_idx = 0, rem_conf;
14089         int ret = -EINVAL;
14090         u32 num_conf = 0;
14091
14092         if (!info->attrs[NL80211_ATTR_TID_CONFIG])
14093                 return -EINVAL;
14094
14095         if (!rdev->ops->set_tid_config)
14096                 return -EOPNOTSUPP;
14097
14098         nla_for_each_nested(tid, info->attrs[NL80211_ATTR_TID_CONFIG],
14099                             rem_conf)
14100                 num_conf++;
14101
14102         tid_config = kzalloc(struct_size(tid_config, tid_conf, num_conf),
14103                              GFP_KERNEL);
14104         if (!tid_config)
14105                 return -ENOMEM;
14106
14107         tid_config->n_tid_conf = num_conf;
14108
14109         if (info->attrs[NL80211_ATTR_MAC])
14110                 tid_config->peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
14111
14112         nla_for_each_nested(tid, info->attrs[NL80211_ATTR_TID_CONFIG],
14113                             rem_conf) {
14114                 ret = nla_parse_nested(attrs, NL80211_TID_CONFIG_ATTR_MAX,
14115                                        tid, NULL, NULL);
14116
14117                 if (ret)
14118                         goto bad_tid_conf;
14119
14120                 ret = parse_tid_conf(rdev, attrs, dev,
14121                                      &tid_config->tid_conf[conf_idx],
14122                                      info, tid_config->peer);
14123                 if (ret)
14124                         goto bad_tid_conf;
14125
14126                 conf_idx++;
14127         }
14128
14129         ret = rdev_set_tid_config(rdev, dev, tid_config);
14130
14131 bad_tid_conf:
14132         kfree(tid_config);
14133         return ret;
14134 }
14135
14136 #define NL80211_FLAG_NEED_WIPHY         0x01
14137 #define NL80211_FLAG_NEED_NETDEV        0x02
14138 #define NL80211_FLAG_NEED_RTNL          0x04
14139 #define NL80211_FLAG_CHECK_NETDEV_UP    0x08
14140 #define NL80211_FLAG_NEED_NETDEV_UP     (NL80211_FLAG_NEED_NETDEV |\
14141                                          NL80211_FLAG_CHECK_NETDEV_UP)
14142 #define NL80211_FLAG_NEED_WDEV          0x10
14143 /* If a netdev is associated, it must be UP, P2P must be started */
14144 #define NL80211_FLAG_NEED_WDEV_UP       (NL80211_FLAG_NEED_WDEV |\
14145                                          NL80211_FLAG_CHECK_NETDEV_UP)
14146 #define NL80211_FLAG_CLEAR_SKB          0x20
14147
14148 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
14149                             struct genl_info *info)
14150 {
14151         struct cfg80211_registered_device *rdev;
14152         struct wireless_dev *wdev;
14153         struct net_device *dev;
14154         bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
14155
14156         if (rtnl)
14157                 rtnl_lock();
14158
14159         if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
14160                 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
14161                 if (IS_ERR(rdev)) {
14162                         if (rtnl)
14163                                 rtnl_unlock();
14164                         return PTR_ERR(rdev);
14165                 }
14166                 info->user_ptr[0] = rdev;
14167         } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV ||
14168                    ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
14169                 ASSERT_RTNL();
14170
14171                 wdev = __cfg80211_wdev_from_attrs(genl_info_net(info),
14172                                                   info->attrs);
14173                 if (IS_ERR(wdev)) {
14174                         if (rtnl)
14175                                 rtnl_unlock();
14176                         return PTR_ERR(wdev);
14177                 }
14178
14179                 dev = wdev->netdev;
14180                 rdev = wiphy_to_rdev(wdev->wiphy);
14181
14182                 if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
14183                         if (!dev) {
14184                                 if (rtnl)
14185                                         rtnl_unlock();
14186                                 return -EINVAL;
14187                         }
14188
14189                         info->user_ptr[1] = dev;
14190                 } else {
14191                         info->user_ptr[1] = wdev;
14192                 }
14193
14194                 if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
14195                     !wdev_running(wdev)) {
14196                         if (rtnl)
14197                                 rtnl_unlock();
14198                         return -ENETDOWN;
14199                 }
14200
14201                 if (dev)
14202                         dev_hold(dev);
14203
14204                 info->user_ptr[0] = rdev;
14205         }
14206
14207         return 0;
14208 }
14209
14210 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
14211                               struct genl_info *info)
14212 {
14213         if (info->user_ptr[1]) {
14214                 if (ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
14215                         struct wireless_dev *wdev = info->user_ptr[1];
14216
14217                         if (wdev->netdev)
14218                                 dev_put(wdev->netdev);
14219                 } else {
14220                         dev_put(info->user_ptr[1]);
14221                 }
14222         }
14223
14224         if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
14225                 rtnl_unlock();
14226
14227         /* If needed, clear the netlink message payload from the SKB
14228          * as it might contain key data that shouldn't stick around on
14229          * the heap after the SKB is freed. The netlink message header
14230          * is still needed for further processing, so leave it intact.
14231          */
14232         if (ops->internal_flags & NL80211_FLAG_CLEAR_SKB) {
14233                 struct nlmsghdr *nlh = nlmsg_hdr(skb);
14234
14235                 memset(nlmsg_data(nlh), 0, nlmsg_len(nlh));
14236         }
14237 }
14238
14239 static const struct genl_ops nl80211_ops[] = {
14240         {
14241                 .cmd = NL80211_CMD_GET_WIPHY,
14242                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14243                 .doit = nl80211_get_wiphy,
14244                 .dumpit = nl80211_dump_wiphy,
14245                 .done = nl80211_dump_wiphy_done,
14246                 /* can be retrieved by unprivileged users */
14247                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14248                                   NL80211_FLAG_NEED_RTNL,
14249         },
14250         {
14251                 .cmd = NL80211_CMD_SET_WIPHY,
14252                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14253                 .doit = nl80211_set_wiphy,
14254                 .flags = GENL_UNS_ADMIN_PERM,
14255                 .internal_flags = NL80211_FLAG_NEED_RTNL,
14256         },
14257         {
14258                 .cmd = NL80211_CMD_GET_INTERFACE,
14259                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14260                 .doit = nl80211_get_interface,
14261                 .dumpit = nl80211_dump_interface,
14262                 /* can be retrieved by unprivileged users */
14263                 .internal_flags = NL80211_FLAG_NEED_WDEV |
14264                                   NL80211_FLAG_NEED_RTNL,
14265         },
14266         {
14267                 .cmd = NL80211_CMD_SET_INTERFACE,
14268                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14269                 .doit = nl80211_set_interface,
14270                 .flags = GENL_UNS_ADMIN_PERM,
14271                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14272                                   NL80211_FLAG_NEED_RTNL,
14273         },
14274         {
14275                 .cmd = NL80211_CMD_NEW_INTERFACE,
14276                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14277                 .doit = nl80211_new_interface,
14278                 .flags = GENL_UNS_ADMIN_PERM,
14279                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14280                                   NL80211_FLAG_NEED_RTNL,
14281         },
14282         {
14283                 .cmd = NL80211_CMD_DEL_INTERFACE,
14284                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14285                 .doit = nl80211_del_interface,
14286                 .flags = GENL_UNS_ADMIN_PERM,
14287                 .internal_flags = NL80211_FLAG_NEED_WDEV |
14288                                   NL80211_FLAG_NEED_RTNL,
14289         },
14290         {
14291                 .cmd = NL80211_CMD_GET_KEY,
14292                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14293                 .doit = nl80211_get_key,
14294                 .flags = GENL_UNS_ADMIN_PERM,
14295                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14296                                   NL80211_FLAG_NEED_RTNL,
14297         },
14298         {
14299                 .cmd = NL80211_CMD_SET_KEY,
14300                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14301                 .doit = nl80211_set_key,
14302                 .flags = GENL_UNS_ADMIN_PERM,
14303                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14304                                   NL80211_FLAG_NEED_RTNL |
14305                                   NL80211_FLAG_CLEAR_SKB,
14306         },
14307         {
14308                 .cmd = NL80211_CMD_NEW_KEY,
14309                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14310                 .doit = nl80211_new_key,
14311                 .flags = GENL_UNS_ADMIN_PERM,
14312                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14313                                   NL80211_FLAG_NEED_RTNL |
14314                                   NL80211_FLAG_CLEAR_SKB,
14315         },
14316         {
14317                 .cmd = NL80211_CMD_DEL_KEY,
14318                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14319                 .doit = nl80211_del_key,
14320                 .flags = GENL_UNS_ADMIN_PERM,
14321                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14322                                   NL80211_FLAG_NEED_RTNL,
14323         },
14324         {
14325                 .cmd = NL80211_CMD_SET_BEACON,
14326                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14327                 .flags = GENL_UNS_ADMIN_PERM,
14328                 .doit = nl80211_set_beacon,
14329                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14330                                   NL80211_FLAG_NEED_RTNL,
14331         },
14332         {
14333                 .cmd = NL80211_CMD_START_AP,
14334                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14335                 .flags = GENL_UNS_ADMIN_PERM,
14336                 .doit = nl80211_start_ap,
14337                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14338                                   NL80211_FLAG_NEED_RTNL,
14339         },
14340         {
14341                 .cmd = NL80211_CMD_STOP_AP,
14342                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14343                 .flags = GENL_UNS_ADMIN_PERM,
14344                 .doit = nl80211_stop_ap,
14345                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14346                                   NL80211_FLAG_NEED_RTNL,
14347         },
14348         {
14349                 .cmd = NL80211_CMD_GET_STATION,
14350                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14351                 .doit = nl80211_get_station,
14352                 .dumpit = nl80211_dump_station,
14353                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14354                                   NL80211_FLAG_NEED_RTNL,
14355         },
14356         {
14357                 .cmd = NL80211_CMD_SET_STATION,
14358                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14359                 .doit = nl80211_set_station,
14360                 .flags = GENL_UNS_ADMIN_PERM,
14361                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14362                                   NL80211_FLAG_NEED_RTNL,
14363         },
14364         {
14365                 .cmd = NL80211_CMD_NEW_STATION,
14366                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14367                 .doit = nl80211_new_station,
14368                 .flags = GENL_UNS_ADMIN_PERM,
14369                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14370                                   NL80211_FLAG_NEED_RTNL,
14371         },
14372         {
14373                 .cmd = NL80211_CMD_DEL_STATION,
14374                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14375                 .doit = nl80211_del_station,
14376                 .flags = GENL_UNS_ADMIN_PERM,
14377                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14378                                   NL80211_FLAG_NEED_RTNL,
14379         },
14380         {
14381                 .cmd = NL80211_CMD_GET_MPATH,
14382                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14383                 .doit = nl80211_get_mpath,
14384                 .dumpit = nl80211_dump_mpath,
14385                 .flags = GENL_UNS_ADMIN_PERM,
14386                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14387                                   NL80211_FLAG_NEED_RTNL,
14388         },
14389         {
14390                 .cmd = NL80211_CMD_GET_MPP,
14391                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14392                 .doit = nl80211_get_mpp,
14393                 .dumpit = nl80211_dump_mpp,
14394                 .flags = GENL_UNS_ADMIN_PERM,
14395                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14396                                   NL80211_FLAG_NEED_RTNL,
14397         },
14398         {
14399                 .cmd = NL80211_CMD_SET_MPATH,
14400                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14401                 .doit = nl80211_set_mpath,
14402                 .flags = GENL_UNS_ADMIN_PERM,
14403                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14404                                   NL80211_FLAG_NEED_RTNL,
14405         },
14406         {
14407                 .cmd = NL80211_CMD_NEW_MPATH,
14408                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14409                 .doit = nl80211_new_mpath,
14410                 .flags = GENL_UNS_ADMIN_PERM,
14411                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14412                                   NL80211_FLAG_NEED_RTNL,
14413         },
14414         {
14415                 .cmd = NL80211_CMD_DEL_MPATH,
14416                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14417                 .doit = nl80211_del_mpath,
14418                 .flags = GENL_UNS_ADMIN_PERM,
14419                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14420                                   NL80211_FLAG_NEED_RTNL,
14421         },
14422         {
14423                 .cmd = NL80211_CMD_SET_BSS,
14424                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14425                 .doit = nl80211_set_bss,
14426                 .flags = GENL_UNS_ADMIN_PERM,
14427                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14428                                   NL80211_FLAG_NEED_RTNL,
14429         },
14430         {
14431                 .cmd = NL80211_CMD_GET_REG,
14432                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14433                 .doit = nl80211_get_reg_do,
14434                 .dumpit = nl80211_get_reg_dump,
14435                 .internal_flags = NL80211_FLAG_NEED_RTNL,
14436                 /* can be retrieved by unprivileged users */
14437         },
14438 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
14439         {
14440                 .cmd = NL80211_CMD_SET_REG,
14441                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14442                 .doit = nl80211_set_reg,
14443                 .flags = GENL_ADMIN_PERM,
14444                 .internal_flags = NL80211_FLAG_NEED_RTNL,
14445         },
14446 #endif
14447         {
14448                 .cmd = NL80211_CMD_REQ_SET_REG,
14449                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14450                 .doit = nl80211_req_set_reg,
14451                 .flags = GENL_ADMIN_PERM,
14452         },
14453         {
14454                 .cmd = NL80211_CMD_RELOAD_REGDB,
14455                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14456                 .doit = nl80211_reload_regdb,
14457                 .flags = GENL_ADMIN_PERM,
14458         },
14459         {
14460                 .cmd = NL80211_CMD_GET_MESH_CONFIG,
14461                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14462                 .doit = nl80211_get_mesh_config,
14463                 /* can be retrieved by unprivileged users */
14464                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14465                                   NL80211_FLAG_NEED_RTNL,
14466         },
14467         {
14468                 .cmd = NL80211_CMD_SET_MESH_CONFIG,
14469                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14470                 .doit = nl80211_update_mesh_config,
14471                 .flags = GENL_UNS_ADMIN_PERM,
14472                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14473                                   NL80211_FLAG_NEED_RTNL,
14474         },
14475         {
14476                 .cmd = NL80211_CMD_TRIGGER_SCAN,
14477                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14478                 .doit = nl80211_trigger_scan,
14479                 .flags = GENL_UNS_ADMIN_PERM,
14480                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14481                                   NL80211_FLAG_NEED_RTNL,
14482         },
14483         {
14484                 .cmd = NL80211_CMD_ABORT_SCAN,
14485                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14486                 .doit = nl80211_abort_scan,
14487                 .flags = GENL_UNS_ADMIN_PERM,
14488                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14489                                   NL80211_FLAG_NEED_RTNL,
14490         },
14491         {
14492                 .cmd = NL80211_CMD_GET_SCAN,
14493                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14494                 .dumpit = nl80211_dump_scan,
14495         },
14496         {
14497                 .cmd = NL80211_CMD_START_SCHED_SCAN,
14498                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14499                 .doit = nl80211_start_sched_scan,
14500                 .flags = GENL_UNS_ADMIN_PERM,
14501                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14502                                   NL80211_FLAG_NEED_RTNL,
14503         },
14504         {
14505                 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
14506                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14507                 .doit = nl80211_stop_sched_scan,
14508                 .flags = GENL_UNS_ADMIN_PERM,
14509                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14510                                   NL80211_FLAG_NEED_RTNL,
14511         },
14512         {
14513                 .cmd = NL80211_CMD_AUTHENTICATE,
14514                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14515                 .doit = nl80211_authenticate,
14516                 .flags = GENL_UNS_ADMIN_PERM,
14517                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14518                                   NL80211_FLAG_NEED_RTNL |
14519                                   NL80211_FLAG_CLEAR_SKB,
14520         },
14521         {
14522                 .cmd = NL80211_CMD_ASSOCIATE,
14523                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14524                 .doit = nl80211_associate,
14525                 .flags = GENL_UNS_ADMIN_PERM,
14526                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14527                                   NL80211_FLAG_NEED_RTNL |
14528                                   NL80211_FLAG_CLEAR_SKB,
14529         },
14530         {
14531                 .cmd = NL80211_CMD_DEAUTHENTICATE,
14532                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14533                 .doit = nl80211_deauthenticate,
14534                 .flags = GENL_UNS_ADMIN_PERM,
14535                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14536                                   NL80211_FLAG_NEED_RTNL,
14537         },
14538         {
14539                 .cmd = NL80211_CMD_DISASSOCIATE,
14540                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14541                 .doit = nl80211_disassociate,
14542                 .flags = GENL_UNS_ADMIN_PERM,
14543                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14544                                   NL80211_FLAG_NEED_RTNL,
14545         },
14546         {
14547                 .cmd = NL80211_CMD_JOIN_IBSS,
14548                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14549                 .doit = nl80211_join_ibss,
14550                 .flags = GENL_UNS_ADMIN_PERM,
14551                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14552                                   NL80211_FLAG_NEED_RTNL,
14553         },
14554         {
14555                 .cmd = NL80211_CMD_LEAVE_IBSS,
14556                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14557                 .doit = nl80211_leave_ibss,
14558                 .flags = GENL_UNS_ADMIN_PERM,
14559                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14560                                   NL80211_FLAG_NEED_RTNL,
14561         },
14562 #ifdef CONFIG_NL80211_TESTMODE
14563         {
14564                 .cmd = NL80211_CMD_TESTMODE,
14565                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14566                 .doit = nl80211_testmode_do,
14567                 .dumpit = nl80211_testmode_dump,
14568                 .flags = GENL_UNS_ADMIN_PERM,
14569                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14570                                   NL80211_FLAG_NEED_RTNL,
14571         },
14572 #endif
14573         {
14574                 .cmd = NL80211_CMD_CONNECT,
14575                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14576                 .doit = nl80211_connect,
14577                 .flags = GENL_UNS_ADMIN_PERM,
14578                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14579                                   NL80211_FLAG_NEED_RTNL |
14580                                   NL80211_FLAG_CLEAR_SKB,
14581         },
14582         {
14583                 .cmd = NL80211_CMD_UPDATE_CONNECT_PARAMS,
14584                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14585                 .doit = nl80211_update_connect_params,
14586                 .flags = GENL_ADMIN_PERM,
14587                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14588                                   NL80211_FLAG_NEED_RTNL |
14589                                   NL80211_FLAG_CLEAR_SKB,
14590         },
14591         {
14592                 .cmd = NL80211_CMD_DISCONNECT,
14593                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14594                 .doit = nl80211_disconnect,
14595                 .flags = GENL_UNS_ADMIN_PERM,
14596                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14597                                   NL80211_FLAG_NEED_RTNL,
14598         },
14599         {
14600                 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
14601                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14602                 .doit = nl80211_wiphy_netns,
14603                 .flags = GENL_UNS_ADMIN_PERM,
14604                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14605                                   NL80211_FLAG_NEED_RTNL,
14606         },
14607         {
14608                 .cmd = NL80211_CMD_GET_SURVEY,
14609                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14610                 .dumpit = nl80211_dump_survey,
14611         },
14612         {
14613                 .cmd = NL80211_CMD_SET_PMKSA,
14614                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14615                 .doit = nl80211_setdel_pmksa,
14616                 .flags = GENL_UNS_ADMIN_PERM,
14617                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14618                                   NL80211_FLAG_NEED_RTNL |
14619                                   NL80211_FLAG_CLEAR_SKB,
14620         },
14621         {
14622                 .cmd = NL80211_CMD_DEL_PMKSA,
14623                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14624                 .doit = nl80211_setdel_pmksa,
14625                 .flags = GENL_UNS_ADMIN_PERM,
14626                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14627                                   NL80211_FLAG_NEED_RTNL,
14628         },
14629         {
14630                 .cmd = NL80211_CMD_FLUSH_PMKSA,
14631                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14632                 .doit = nl80211_flush_pmksa,
14633                 .flags = GENL_UNS_ADMIN_PERM,
14634                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14635                                   NL80211_FLAG_NEED_RTNL,
14636         },
14637         {
14638                 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
14639                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14640                 .doit = nl80211_remain_on_channel,
14641                 .flags = GENL_UNS_ADMIN_PERM,
14642                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14643                                   NL80211_FLAG_NEED_RTNL,
14644         },
14645         {
14646                 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
14647                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14648                 .doit = nl80211_cancel_remain_on_channel,
14649                 .flags = GENL_UNS_ADMIN_PERM,
14650                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14651                                   NL80211_FLAG_NEED_RTNL,
14652         },
14653         {
14654                 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
14655                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14656                 .doit = nl80211_set_tx_bitrate_mask,
14657                 .flags = GENL_UNS_ADMIN_PERM,
14658                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14659                                   NL80211_FLAG_NEED_RTNL,
14660         },
14661         {
14662                 .cmd = NL80211_CMD_REGISTER_FRAME,
14663                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14664                 .doit = nl80211_register_mgmt,
14665                 .flags = GENL_UNS_ADMIN_PERM,
14666                 .internal_flags = NL80211_FLAG_NEED_WDEV |
14667                                   NL80211_FLAG_NEED_RTNL,
14668         },
14669         {
14670                 .cmd = NL80211_CMD_FRAME,
14671                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14672                 .doit = nl80211_tx_mgmt,
14673                 .flags = GENL_UNS_ADMIN_PERM,
14674                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14675                                   NL80211_FLAG_NEED_RTNL,
14676         },
14677         {
14678                 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
14679                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14680                 .doit = nl80211_tx_mgmt_cancel_wait,
14681                 .flags = GENL_UNS_ADMIN_PERM,
14682                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14683                                   NL80211_FLAG_NEED_RTNL,
14684         },
14685         {
14686                 .cmd = NL80211_CMD_SET_POWER_SAVE,
14687                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14688                 .doit = nl80211_set_power_save,
14689                 .flags = GENL_UNS_ADMIN_PERM,
14690                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14691                                   NL80211_FLAG_NEED_RTNL,
14692         },
14693         {
14694                 .cmd = NL80211_CMD_GET_POWER_SAVE,
14695                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14696                 .doit = nl80211_get_power_save,
14697                 /* can be retrieved by unprivileged users */
14698                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14699                                   NL80211_FLAG_NEED_RTNL,
14700         },
14701         {
14702                 .cmd = NL80211_CMD_SET_CQM,
14703                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14704                 .doit = nl80211_set_cqm,
14705                 .flags = GENL_UNS_ADMIN_PERM,
14706                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14707                                   NL80211_FLAG_NEED_RTNL,
14708         },
14709         {
14710                 .cmd = NL80211_CMD_SET_CHANNEL,
14711                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14712                 .doit = nl80211_set_channel,
14713                 .flags = GENL_UNS_ADMIN_PERM,
14714                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14715                                   NL80211_FLAG_NEED_RTNL,
14716         },
14717         {
14718                 .cmd = NL80211_CMD_SET_WDS_PEER,
14719                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14720                 .doit = nl80211_set_wds_peer,
14721                 .flags = GENL_UNS_ADMIN_PERM,
14722                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14723                                   NL80211_FLAG_NEED_RTNL,
14724         },
14725         {
14726                 .cmd = NL80211_CMD_JOIN_MESH,
14727                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14728                 .doit = nl80211_join_mesh,
14729                 .flags = GENL_UNS_ADMIN_PERM,
14730                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14731                                   NL80211_FLAG_NEED_RTNL,
14732         },
14733         {
14734                 .cmd = NL80211_CMD_LEAVE_MESH,
14735                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14736                 .doit = nl80211_leave_mesh,
14737                 .flags = GENL_UNS_ADMIN_PERM,
14738                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14739                                   NL80211_FLAG_NEED_RTNL,
14740         },
14741         {
14742                 .cmd = NL80211_CMD_JOIN_OCB,
14743                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14744                 .doit = nl80211_join_ocb,
14745                 .flags = GENL_UNS_ADMIN_PERM,
14746                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14747                                   NL80211_FLAG_NEED_RTNL,
14748         },
14749         {
14750                 .cmd = NL80211_CMD_LEAVE_OCB,
14751                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14752                 .doit = nl80211_leave_ocb,
14753                 .flags = GENL_UNS_ADMIN_PERM,
14754                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14755                                   NL80211_FLAG_NEED_RTNL,
14756         },
14757 #ifdef CONFIG_PM
14758         {
14759                 .cmd = NL80211_CMD_GET_WOWLAN,
14760                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14761                 .doit = nl80211_get_wowlan,
14762                 /* can be retrieved by unprivileged users */
14763                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14764                                   NL80211_FLAG_NEED_RTNL,
14765         },
14766         {
14767                 .cmd = NL80211_CMD_SET_WOWLAN,
14768                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14769                 .doit = nl80211_set_wowlan,
14770                 .flags = GENL_UNS_ADMIN_PERM,
14771                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14772                                   NL80211_FLAG_NEED_RTNL,
14773         },
14774 #endif
14775         {
14776                 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
14777                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14778                 .doit = nl80211_set_rekey_data,
14779                 .flags = GENL_UNS_ADMIN_PERM,
14780                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14781                                   NL80211_FLAG_NEED_RTNL |
14782                                   NL80211_FLAG_CLEAR_SKB,
14783         },
14784         {
14785                 .cmd = NL80211_CMD_TDLS_MGMT,
14786                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14787                 .doit = nl80211_tdls_mgmt,
14788                 .flags = GENL_UNS_ADMIN_PERM,
14789                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14790                                   NL80211_FLAG_NEED_RTNL,
14791         },
14792         {
14793                 .cmd = NL80211_CMD_TDLS_OPER,
14794                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14795                 .doit = nl80211_tdls_oper,
14796                 .flags = GENL_UNS_ADMIN_PERM,
14797                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14798                                   NL80211_FLAG_NEED_RTNL,
14799         },
14800         {
14801                 .cmd = NL80211_CMD_UNEXPECTED_FRAME,
14802                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14803                 .doit = nl80211_register_unexpected_frame,
14804                 .flags = GENL_UNS_ADMIN_PERM,
14805                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14806                                   NL80211_FLAG_NEED_RTNL,
14807         },
14808         {
14809                 .cmd = NL80211_CMD_PROBE_CLIENT,
14810                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14811                 .doit = nl80211_probe_client,
14812                 .flags = GENL_UNS_ADMIN_PERM,
14813                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14814                                   NL80211_FLAG_NEED_RTNL,
14815         },
14816         {
14817                 .cmd = NL80211_CMD_REGISTER_BEACONS,
14818                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14819                 .doit = nl80211_register_beacons,
14820                 .flags = GENL_UNS_ADMIN_PERM,
14821                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14822                                   NL80211_FLAG_NEED_RTNL,
14823         },
14824         {
14825                 .cmd = NL80211_CMD_SET_NOACK_MAP,
14826                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14827                 .doit = nl80211_set_noack_map,
14828                 .flags = GENL_UNS_ADMIN_PERM,
14829                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14830                                   NL80211_FLAG_NEED_RTNL,
14831         },
14832         {
14833                 .cmd = NL80211_CMD_START_P2P_DEVICE,
14834                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14835                 .doit = nl80211_start_p2p_device,
14836                 .flags = GENL_UNS_ADMIN_PERM,
14837                 .internal_flags = NL80211_FLAG_NEED_WDEV |
14838                                   NL80211_FLAG_NEED_RTNL,
14839         },
14840         {
14841                 .cmd = NL80211_CMD_STOP_P2P_DEVICE,
14842                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14843                 .doit = nl80211_stop_p2p_device,
14844                 .flags = GENL_UNS_ADMIN_PERM,
14845                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14846                                   NL80211_FLAG_NEED_RTNL,
14847         },
14848         {
14849                 .cmd = NL80211_CMD_START_NAN,
14850                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14851                 .doit = nl80211_start_nan,
14852                 .flags = GENL_ADMIN_PERM,
14853                 .internal_flags = NL80211_FLAG_NEED_WDEV |
14854                                   NL80211_FLAG_NEED_RTNL,
14855         },
14856         {
14857                 .cmd = NL80211_CMD_STOP_NAN,
14858                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14859                 .doit = nl80211_stop_nan,
14860                 .flags = GENL_ADMIN_PERM,
14861                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14862                                   NL80211_FLAG_NEED_RTNL,
14863         },
14864         {
14865                 .cmd = NL80211_CMD_ADD_NAN_FUNCTION,
14866                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14867                 .doit = nl80211_nan_add_func,
14868                 .flags = GENL_ADMIN_PERM,
14869                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14870                                   NL80211_FLAG_NEED_RTNL,
14871         },
14872         {
14873                 .cmd = NL80211_CMD_DEL_NAN_FUNCTION,
14874                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14875                 .doit = nl80211_nan_del_func,
14876                 .flags = GENL_ADMIN_PERM,
14877                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14878                                   NL80211_FLAG_NEED_RTNL,
14879         },
14880         {
14881                 .cmd = NL80211_CMD_CHANGE_NAN_CONFIG,
14882                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14883                 .doit = nl80211_nan_change_config,
14884                 .flags = GENL_ADMIN_PERM,
14885                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14886                                   NL80211_FLAG_NEED_RTNL,
14887         },
14888         {
14889                 .cmd = NL80211_CMD_SET_MCAST_RATE,
14890                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14891                 .doit = nl80211_set_mcast_rate,
14892                 .flags = GENL_UNS_ADMIN_PERM,
14893                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14894                                   NL80211_FLAG_NEED_RTNL,
14895         },
14896         {
14897                 .cmd = NL80211_CMD_SET_MAC_ACL,
14898                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14899                 .doit = nl80211_set_mac_acl,
14900                 .flags = GENL_UNS_ADMIN_PERM,
14901                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14902                                   NL80211_FLAG_NEED_RTNL,
14903         },
14904         {
14905                 .cmd = NL80211_CMD_RADAR_DETECT,
14906                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14907                 .doit = nl80211_start_radar_detection,
14908                 .flags = GENL_UNS_ADMIN_PERM,
14909                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14910                                   NL80211_FLAG_NEED_RTNL,
14911         },
14912         {
14913                 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES,
14914                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14915                 .doit = nl80211_get_protocol_features,
14916         },
14917         {
14918                 .cmd = NL80211_CMD_UPDATE_FT_IES,
14919                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14920                 .doit = nl80211_update_ft_ies,
14921                 .flags = GENL_UNS_ADMIN_PERM,
14922                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14923                                   NL80211_FLAG_NEED_RTNL,
14924         },
14925         {
14926                 .cmd = NL80211_CMD_CRIT_PROTOCOL_START,
14927                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14928                 .doit = nl80211_crit_protocol_start,
14929                 .flags = GENL_UNS_ADMIN_PERM,
14930                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14931                                   NL80211_FLAG_NEED_RTNL,
14932         },
14933         {
14934                 .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP,
14935                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14936                 .doit = nl80211_crit_protocol_stop,
14937                 .flags = GENL_UNS_ADMIN_PERM,
14938                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14939                                   NL80211_FLAG_NEED_RTNL,
14940         },
14941         {
14942                 .cmd = NL80211_CMD_GET_COALESCE,
14943                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14944                 .doit = nl80211_get_coalesce,
14945                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14946                                   NL80211_FLAG_NEED_RTNL,
14947         },
14948         {
14949                 .cmd = NL80211_CMD_SET_COALESCE,
14950                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14951                 .doit = nl80211_set_coalesce,
14952                 .flags = GENL_UNS_ADMIN_PERM,
14953                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14954                                   NL80211_FLAG_NEED_RTNL,
14955         },
14956         {
14957                 .cmd = NL80211_CMD_CHANNEL_SWITCH,
14958                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14959                 .doit = nl80211_channel_switch,
14960                 .flags = GENL_UNS_ADMIN_PERM,
14961                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14962                                   NL80211_FLAG_NEED_RTNL,
14963         },
14964         {
14965                 .cmd = NL80211_CMD_VENDOR,
14966                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14967                 .doit = nl80211_vendor_cmd,
14968                 .dumpit = nl80211_vendor_cmd_dump,
14969                 .flags = GENL_UNS_ADMIN_PERM,
14970                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14971                                   NL80211_FLAG_NEED_RTNL |
14972                                   NL80211_FLAG_CLEAR_SKB,
14973         },
14974         {
14975                 .cmd = NL80211_CMD_SET_QOS_MAP,
14976                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14977                 .doit = nl80211_set_qos_map,
14978                 .flags = GENL_UNS_ADMIN_PERM,
14979                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14980                                   NL80211_FLAG_NEED_RTNL,
14981         },
14982         {
14983                 .cmd = NL80211_CMD_ADD_TX_TS,
14984                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14985                 .doit = nl80211_add_tx_ts,
14986                 .flags = GENL_UNS_ADMIN_PERM,
14987                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14988                                   NL80211_FLAG_NEED_RTNL,
14989         },
14990         {
14991                 .cmd = NL80211_CMD_DEL_TX_TS,
14992                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14993                 .doit = nl80211_del_tx_ts,
14994                 .flags = GENL_UNS_ADMIN_PERM,
14995                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14996                                   NL80211_FLAG_NEED_RTNL,
14997         },
14998         {
14999                 .cmd = NL80211_CMD_TDLS_CHANNEL_SWITCH,
15000                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15001                 .doit = nl80211_tdls_channel_switch,
15002                 .flags = GENL_UNS_ADMIN_PERM,
15003                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15004                                   NL80211_FLAG_NEED_RTNL,
15005         },
15006         {
15007                 .cmd = NL80211_CMD_TDLS_CANCEL_CHANNEL_SWITCH,
15008                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15009                 .doit = nl80211_tdls_cancel_channel_switch,
15010                 .flags = GENL_UNS_ADMIN_PERM,
15011                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15012                                   NL80211_FLAG_NEED_RTNL,
15013         },
15014         {
15015                 .cmd = NL80211_CMD_SET_MULTICAST_TO_UNICAST,
15016                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15017                 .doit = nl80211_set_multicast_to_unicast,
15018                 .flags = GENL_UNS_ADMIN_PERM,
15019                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
15020                                   NL80211_FLAG_NEED_RTNL,
15021         },
15022         {
15023                 .cmd = NL80211_CMD_SET_PMK,
15024                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15025                 .doit = nl80211_set_pmk,
15026                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15027                                   NL80211_FLAG_NEED_RTNL |
15028                                   NL80211_FLAG_CLEAR_SKB,
15029         },
15030         {
15031                 .cmd = NL80211_CMD_DEL_PMK,
15032                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15033                 .doit = nl80211_del_pmk,
15034                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15035                                   NL80211_FLAG_NEED_RTNL,
15036         },
15037         {
15038                 .cmd = NL80211_CMD_EXTERNAL_AUTH,
15039                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15040                 .doit = nl80211_external_auth,
15041                 .flags = GENL_ADMIN_PERM,
15042                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15043                                   NL80211_FLAG_NEED_RTNL,
15044         },
15045         {
15046                 .cmd = NL80211_CMD_CONTROL_PORT_FRAME,
15047                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15048                 .doit = nl80211_tx_control_port,
15049                 .flags = GENL_UNS_ADMIN_PERM,
15050                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15051                                   NL80211_FLAG_NEED_RTNL,
15052         },
15053         {
15054                 .cmd = NL80211_CMD_GET_FTM_RESPONDER_STATS,
15055                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15056                 .doit = nl80211_get_ftm_responder_stats,
15057                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
15058                                   NL80211_FLAG_NEED_RTNL,
15059         },
15060         {
15061                 .cmd = NL80211_CMD_PEER_MEASUREMENT_START,
15062                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15063                 .doit = nl80211_pmsr_start,
15064                 .flags = GENL_UNS_ADMIN_PERM,
15065                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
15066                                   NL80211_FLAG_NEED_RTNL,
15067         },
15068         {
15069                 .cmd = NL80211_CMD_NOTIFY_RADAR,
15070                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15071                 .doit = nl80211_notify_radar_detection,
15072                 .flags = GENL_UNS_ADMIN_PERM,
15073                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15074                                   NL80211_FLAG_NEED_RTNL,
15075         },
15076         {
15077                 .cmd = NL80211_CMD_UPDATE_OWE_INFO,
15078                 .doit = nl80211_update_owe_info,
15079                 .flags = GENL_ADMIN_PERM,
15080                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15081                                   NL80211_FLAG_NEED_RTNL,
15082         },
15083         {
15084                 .cmd = NL80211_CMD_PROBE_MESH_LINK,
15085                 .doit = nl80211_probe_mesh_link,
15086                 .flags = GENL_UNS_ADMIN_PERM,
15087                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15088                                   NL80211_FLAG_NEED_RTNL,
15089         },
15090         {
15091                 .cmd = NL80211_CMD_SET_TID_CONFIG,
15092                 .doit = nl80211_set_tid_config,
15093                 .flags = GENL_UNS_ADMIN_PERM,
15094                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
15095                                   NL80211_FLAG_NEED_RTNL,
15096         },
15097 };
15098
15099 static struct genl_family nl80211_fam __ro_after_init = {
15100         .name = NL80211_GENL_NAME,      /* have users key off the name instead */
15101         .hdrsize = 0,                   /* no private header */
15102         .version = 1,                   /* no particular meaning now */
15103         .maxattr = NL80211_ATTR_MAX,
15104         .policy = nl80211_policy,
15105         .netnsok = true,
15106         .pre_doit = nl80211_pre_doit,
15107         .post_doit = nl80211_post_doit,
15108         .module = THIS_MODULE,
15109         .ops = nl80211_ops,
15110         .n_ops = ARRAY_SIZE(nl80211_ops),
15111         .mcgrps = nl80211_mcgrps,
15112         .n_mcgrps = ARRAY_SIZE(nl80211_mcgrps),
15113         .parallel_ops = true,
15114 };
15115
15116 /* notification functions */
15117
15118 void nl80211_notify_wiphy(struct cfg80211_registered_device *rdev,
15119                           enum nl80211_commands cmd)
15120 {
15121         struct sk_buff *msg;
15122         struct nl80211_dump_wiphy_state state = {};
15123
15124         WARN_ON(cmd != NL80211_CMD_NEW_WIPHY &&
15125                 cmd != NL80211_CMD_DEL_WIPHY);
15126
15127         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15128         if (!msg)
15129                 return;
15130
15131         if (nl80211_send_wiphy(rdev, cmd, msg, 0, 0, 0, &state) < 0) {
15132                 nlmsg_free(msg);
15133                 return;
15134         }
15135
15136         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15137                                 NL80211_MCGRP_CONFIG, GFP_KERNEL);
15138 }
15139
15140 void nl80211_notify_iface(struct cfg80211_registered_device *rdev,
15141                                 struct wireless_dev *wdev,
15142                                 enum nl80211_commands cmd)
15143 {
15144         struct sk_buff *msg;
15145
15146         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15147         if (!msg)
15148                 return;
15149
15150         if (nl80211_send_iface(msg, 0, 0, 0, rdev, wdev, cmd) < 0) {
15151                 nlmsg_free(msg);
15152                 return;
15153         }
15154
15155         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15156                                 NL80211_MCGRP_CONFIG, GFP_KERNEL);
15157 }
15158
15159 static int nl80211_add_scan_req(struct sk_buff *msg,
15160                                 struct cfg80211_registered_device *rdev)
15161 {
15162         struct cfg80211_scan_request *req = rdev->scan_req;
15163         struct nlattr *nest;
15164         int i;
15165
15166         if (WARN_ON(!req))
15167                 return 0;
15168
15169         nest = nla_nest_start_noflag(msg, NL80211_ATTR_SCAN_SSIDS);
15170         if (!nest)
15171                 goto nla_put_failure;
15172         for (i = 0; i < req->n_ssids; i++) {
15173                 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid))
15174                         goto nla_put_failure;
15175         }
15176         nla_nest_end(msg, nest);
15177
15178         nest = nla_nest_start_noflag(msg, NL80211_ATTR_SCAN_FREQUENCIES);
15179         if (!nest)
15180                 goto nla_put_failure;
15181         for (i = 0; i < req->n_channels; i++) {
15182                 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
15183                         goto nla_put_failure;
15184         }
15185         nla_nest_end(msg, nest);
15186
15187         if (req->ie &&
15188             nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie))
15189                 goto nla_put_failure;
15190
15191         if (req->flags &&
15192             nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags))
15193                 goto nla_put_failure;
15194
15195         if (req->info.scan_start_tsf &&
15196             (nla_put_u64_64bit(msg, NL80211_ATTR_SCAN_START_TIME_TSF,
15197                                req->info.scan_start_tsf, NL80211_BSS_PAD) ||
15198              nla_put(msg, NL80211_ATTR_SCAN_START_TIME_TSF_BSSID, ETH_ALEN,
15199                      req->info.tsf_bssid)))
15200                 goto nla_put_failure;
15201
15202         return 0;
15203  nla_put_failure:
15204         return -ENOBUFS;
15205 }
15206
15207 static int nl80211_prep_scan_msg(struct sk_buff *msg,
15208                                  struct cfg80211_registered_device *rdev,
15209                                  struct wireless_dev *wdev,
15210                                  u32 portid, u32 seq, int flags,
15211                                  u32 cmd)
15212 {
15213         void *hdr;
15214
15215         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
15216         if (!hdr)
15217                 return -1;
15218
15219         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15220             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
15221                                          wdev->netdev->ifindex)) ||
15222             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
15223                               NL80211_ATTR_PAD))
15224                 goto nla_put_failure;
15225
15226         /* ignore errors and send incomplete event anyway */
15227         nl80211_add_scan_req(msg, rdev);
15228
15229         genlmsg_end(msg, hdr);
15230         return 0;
15231
15232  nla_put_failure:
15233         genlmsg_cancel(msg, hdr);
15234         return -EMSGSIZE;
15235 }
15236
15237 static int
15238 nl80211_prep_sched_scan_msg(struct sk_buff *msg,
15239                             struct cfg80211_sched_scan_request *req, u32 cmd)
15240 {
15241         void *hdr;
15242
15243         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
15244         if (!hdr)
15245                 return -1;
15246
15247         if (nla_put_u32(msg, NL80211_ATTR_WIPHY,
15248                         wiphy_to_rdev(req->wiphy)->wiphy_idx) ||
15249             nla_put_u32(msg, NL80211_ATTR_IFINDEX, req->dev->ifindex) ||
15250             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, req->reqid,
15251                               NL80211_ATTR_PAD))
15252                 goto nla_put_failure;
15253
15254         genlmsg_end(msg, hdr);
15255         return 0;
15256
15257  nla_put_failure:
15258         genlmsg_cancel(msg, hdr);
15259         return -EMSGSIZE;
15260 }
15261
15262 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
15263                              struct wireless_dev *wdev)
15264 {
15265         struct sk_buff *msg;
15266
15267         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15268         if (!msg)
15269                 return;
15270
15271         if (nl80211_prep_scan_msg(msg, rdev, wdev, 0, 0, 0,
15272                                   NL80211_CMD_TRIGGER_SCAN) < 0) {
15273                 nlmsg_free(msg);
15274                 return;
15275         }
15276
15277         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15278                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
15279 }
15280
15281 struct sk_buff *nl80211_build_scan_msg(struct cfg80211_registered_device *rdev,
15282                                        struct wireless_dev *wdev, bool aborted)
15283 {
15284         struct sk_buff *msg;
15285
15286         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15287         if (!msg)
15288                 return NULL;
15289
15290         if (nl80211_prep_scan_msg(msg, rdev, wdev, 0, 0, 0,
15291                                   aborted ? NL80211_CMD_SCAN_ABORTED :
15292                                             NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
15293                 nlmsg_free(msg);
15294                 return NULL;
15295         }
15296
15297         return msg;
15298 }
15299
15300 /* send message created by nl80211_build_scan_msg() */
15301 void nl80211_send_scan_msg(struct cfg80211_registered_device *rdev,
15302                            struct sk_buff *msg)
15303 {
15304         if (!msg)
15305                 return;
15306
15307         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15308                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
15309 }
15310
15311 void nl80211_send_sched_scan(struct cfg80211_sched_scan_request *req, u32 cmd)
15312 {
15313         struct sk_buff *msg;
15314
15315         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15316         if (!msg)
15317                 return;
15318
15319         if (nl80211_prep_sched_scan_msg(msg, req, cmd) < 0) {
15320                 nlmsg_free(msg);
15321                 return;
15322         }
15323
15324         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(req->wiphy), msg, 0,
15325                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
15326 }
15327
15328 static bool nl80211_reg_change_event_fill(struct sk_buff *msg,
15329                                           struct regulatory_request *request)
15330 {
15331         /* Userspace can always count this one always being set */
15332         if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator))
15333                 goto nla_put_failure;
15334
15335         if (request->alpha2[0] == '0' && request->alpha2[1] == '0') {
15336                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
15337                                NL80211_REGDOM_TYPE_WORLD))
15338                         goto nla_put_failure;
15339         } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') {
15340                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
15341                                NL80211_REGDOM_TYPE_CUSTOM_WORLD))
15342                         goto nla_put_failure;
15343         } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
15344                    request->intersect) {
15345                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
15346                                NL80211_REGDOM_TYPE_INTERSECTION))
15347                         goto nla_put_failure;
15348         } else {
15349                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
15350                                NL80211_REGDOM_TYPE_COUNTRY) ||
15351                     nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
15352                                    request->alpha2))
15353                         goto nla_put_failure;
15354         }
15355
15356         if (request->wiphy_idx != WIPHY_IDX_INVALID) {
15357                 struct wiphy *wiphy = wiphy_idx_to_wiphy(request->wiphy_idx);
15358
15359                 if (wiphy &&
15360                     nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx))
15361                         goto nla_put_failure;
15362
15363                 if (wiphy &&
15364                     wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
15365                     nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
15366                         goto nla_put_failure;
15367         }
15368
15369         return true;
15370
15371 nla_put_failure:
15372         return false;
15373 }
15374
15375 /*
15376  * This can happen on global regulatory changes or device specific settings
15377  * based on custom regulatory domains.
15378  */
15379 void nl80211_common_reg_change_event(enum nl80211_commands cmd_id,
15380                                      struct regulatory_request *request)
15381 {
15382         struct sk_buff *msg;
15383         void *hdr;
15384
15385         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15386         if (!msg)
15387                 return;
15388
15389         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd_id);
15390         if (!hdr)
15391                 goto nla_put_failure;
15392
15393         if (!nl80211_reg_change_event_fill(msg, request))
15394                 goto nla_put_failure;
15395
15396         genlmsg_end(msg, hdr);
15397
15398         rcu_read_lock();
15399         genlmsg_multicast_allns(&nl80211_fam, msg, 0,
15400                                 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
15401         rcu_read_unlock();
15402
15403         return;
15404
15405 nla_put_failure:
15406         nlmsg_free(msg);
15407 }
15408
15409 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
15410                                     struct net_device *netdev,
15411                                     const u8 *buf, size_t len,
15412                                     enum nl80211_commands cmd, gfp_t gfp,
15413                                     int uapsd_queues, const u8 *req_ies,
15414                                     size_t req_ies_len)
15415 {
15416         struct sk_buff *msg;
15417         void *hdr;
15418
15419         msg = nlmsg_new(100 + len + req_ies_len, gfp);
15420         if (!msg)
15421                 return;
15422
15423         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
15424         if (!hdr) {
15425                 nlmsg_free(msg);
15426                 return;
15427         }
15428
15429         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15430             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15431             nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
15432             (req_ies &&
15433              nla_put(msg, NL80211_ATTR_REQ_IE, req_ies_len, req_ies)))
15434                 goto nla_put_failure;
15435
15436         if (uapsd_queues >= 0) {
15437                 struct nlattr *nla_wmm =
15438                         nla_nest_start_noflag(msg, NL80211_ATTR_STA_WME);
15439                 if (!nla_wmm)
15440                         goto nla_put_failure;
15441
15442                 if (nla_put_u8(msg, NL80211_STA_WME_UAPSD_QUEUES,
15443                                uapsd_queues))
15444                         goto nla_put_failure;
15445
15446                 nla_nest_end(msg, nla_wmm);
15447         }
15448
15449         genlmsg_end(msg, hdr);
15450
15451         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15452                                 NL80211_MCGRP_MLME, gfp);
15453         return;
15454
15455  nla_put_failure:
15456         nlmsg_free(msg);
15457 }
15458
15459 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
15460                           struct net_device *netdev, const u8 *buf,
15461                           size_t len, gfp_t gfp)
15462 {
15463         nl80211_send_mlme_event(rdev, netdev, buf, len,
15464                                 NL80211_CMD_AUTHENTICATE, gfp, -1, NULL, 0);
15465 }
15466
15467 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
15468                            struct net_device *netdev, const u8 *buf,
15469                            size_t len, gfp_t gfp, int uapsd_queues,
15470                            const u8 *req_ies, size_t req_ies_len)
15471 {
15472         nl80211_send_mlme_event(rdev, netdev, buf, len,
15473                                 NL80211_CMD_ASSOCIATE, gfp, uapsd_queues,
15474                                 req_ies, req_ies_len);
15475 }
15476
15477 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
15478                          struct net_device *netdev, const u8 *buf,
15479                          size_t len, gfp_t gfp)
15480 {
15481         nl80211_send_mlme_event(rdev, netdev, buf, len,
15482                                 NL80211_CMD_DEAUTHENTICATE, gfp, -1, NULL, 0);
15483 }
15484
15485 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
15486                            struct net_device *netdev, const u8 *buf,
15487                            size_t len, gfp_t gfp)
15488 {
15489         nl80211_send_mlme_event(rdev, netdev, buf, len,
15490                                 NL80211_CMD_DISASSOCIATE, gfp, -1, NULL, 0);
15491 }
15492
15493 void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf,
15494                                   size_t len)
15495 {
15496         struct wireless_dev *wdev = dev->ieee80211_ptr;
15497         struct wiphy *wiphy = wdev->wiphy;
15498         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15499         const struct ieee80211_mgmt *mgmt = (void *)buf;
15500         u32 cmd;
15501
15502         if (WARN_ON(len < 2))
15503                 return;
15504
15505         if (ieee80211_is_deauth(mgmt->frame_control))
15506                 cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE;
15507         else
15508                 cmd = NL80211_CMD_UNPROT_DISASSOCIATE;
15509
15510         trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len);
15511         nl80211_send_mlme_event(rdev, dev, buf, len, cmd, GFP_ATOMIC, -1,
15512                                 NULL, 0);
15513 }
15514 EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt);
15515
15516 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
15517                                       struct net_device *netdev, int cmd,
15518                                       const u8 *addr, gfp_t gfp)
15519 {
15520         struct sk_buff *msg;
15521         void *hdr;
15522
15523         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15524         if (!msg)
15525                 return;
15526
15527         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
15528         if (!hdr) {
15529                 nlmsg_free(msg);
15530                 return;
15531         }
15532
15533         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15534             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15535             nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
15536             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
15537                 goto nla_put_failure;
15538
15539         genlmsg_end(msg, hdr);
15540
15541         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15542                                 NL80211_MCGRP_MLME, gfp);
15543         return;
15544
15545  nla_put_failure:
15546         nlmsg_free(msg);
15547 }
15548
15549 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
15550                                struct net_device *netdev, const u8 *addr,
15551                                gfp_t gfp)
15552 {
15553         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
15554                                   addr, gfp);
15555 }
15556
15557 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
15558                                 struct net_device *netdev, const u8 *addr,
15559                                 gfp_t gfp)
15560 {
15561         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
15562                                   addr, gfp);
15563 }
15564
15565 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
15566                                  struct net_device *netdev,
15567                                  struct cfg80211_connect_resp_params *cr,
15568                                  gfp_t gfp)
15569 {
15570         struct sk_buff *msg;
15571         void *hdr;
15572
15573         msg = nlmsg_new(100 + cr->req_ie_len + cr->resp_ie_len +
15574                         cr->fils.kek_len + cr->fils.pmk_len +
15575                         (cr->fils.pmkid ? WLAN_PMKID_LEN : 0), gfp);
15576         if (!msg)
15577                 return;
15578
15579         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
15580         if (!hdr) {
15581                 nlmsg_free(msg);
15582                 return;
15583         }
15584
15585         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15586             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15587             (cr->bssid &&
15588              nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, cr->bssid)) ||
15589             nla_put_u16(msg, NL80211_ATTR_STATUS_CODE,
15590                         cr->status < 0 ? WLAN_STATUS_UNSPECIFIED_FAILURE :
15591                         cr->status) ||
15592             (cr->status < 0 &&
15593              (nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
15594               nla_put_u32(msg, NL80211_ATTR_TIMEOUT_REASON,
15595                           cr->timeout_reason))) ||
15596             (cr->req_ie &&
15597              nla_put(msg, NL80211_ATTR_REQ_IE, cr->req_ie_len, cr->req_ie)) ||
15598             (cr->resp_ie &&
15599              nla_put(msg, NL80211_ATTR_RESP_IE, cr->resp_ie_len,
15600                      cr->resp_ie)) ||
15601             (cr->fils.update_erp_next_seq_num &&
15602              nla_put_u16(msg, NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM,
15603                          cr->fils.erp_next_seq_num)) ||
15604             (cr->status == WLAN_STATUS_SUCCESS &&
15605              ((cr->fils.kek &&
15606                nla_put(msg, NL80211_ATTR_FILS_KEK, cr->fils.kek_len,
15607                        cr->fils.kek)) ||
15608               (cr->fils.pmk &&
15609                nla_put(msg, NL80211_ATTR_PMK, cr->fils.pmk_len, cr->fils.pmk)) ||
15610               (cr->fils.pmkid &&
15611                nla_put(msg, NL80211_ATTR_PMKID, WLAN_PMKID_LEN, cr->fils.pmkid)))))
15612                 goto nla_put_failure;
15613
15614         genlmsg_end(msg, hdr);
15615
15616         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15617                                 NL80211_MCGRP_MLME, gfp);
15618         return;
15619
15620  nla_put_failure:
15621         nlmsg_free(msg);
15622 }
15623
15624 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
15625                          struct net_device *netdev,
15626                          struct cfg80211_roam_info *info, gfp_t gfp)
15627 {
15628         struct sk_buff *msg;
15629         void *hdr;
15630         const u8 *bssid = info->bss ? info->bss->bssid : info->bssid;
15631
15632         msg = nlmsg_new(100 + info->req_ie_len + info->resp_ie_len +
15633                         info->fils.kek_len + info->fils.pmk_len +
15634                         (info->fils.pmkid ? WLAN_PMKID_LEN : 0), gfp);
15635         if (!msg)
15636                 return;
15637
15638         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
15639         if (!hdr) {
15640                 nlmsg_free(msg);
15641                 return;
15642         }
15643
15644         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15645             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15646             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid) ||
15647             (info->req_ie &&
15648              nla_put(msg, NL80211_ATTR_REQ_IE, info->req_ie_len,
15649                      info->req_ie)) ||
15650             (info->resp_ie &&
15651              nla_put(msg, NL80211_ATTR_RESP_IE, info->resp_ie_len,
15652                      info->resp_ie)) ||
15653             (info->fils.update_erp_next_seq_num &&
15654              nla_put_u16(msg, NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM,
15655                          info->fils.erp_next_seq_num)) ||
15656             (info->fils.kek &&
15657              nla_put(msg, NL80211_ATTR_FILS_KEK, info->fils.kek_len,
15658                      info->fils.kek)) ||
15659             (info->fils.pmk &&
15660              nla_put(msg, NL80211_ATTR_PMK, info->fils.pmk_len, info->fils.pmk)) ||
15661             (info->fils.pmkid &&
15662              nla_put(msg, NL80211_ATTR_PMKID, WLAN_PMKID_LEN, info->fils.pmkid)))
15663                 goto nla_put_failure;
15664
15665         genlmsg_end(msg, hdr);
15666
15667         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15668                                 NL80211_MCGRP_MLME, gfp);
15669         return;
15670
15671  nla_put_failure:
15672         nlmsg_free(msg);
15673 }
15674
15675 void nl80211_send_port_authorized(struct cfg80211_registered_device *rdev,
15676                                   struct net_device *netdev, const u8 *bssid)
15677 {
15678         struct sk_buff *msg;
15679         void *hdr;
15680
15681         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15682         if (!msg)
15683                 return;
15684
15685         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PORT_AUTHORIZED);
15686         if (!hdr) {
15687                 nlmsg_free(msg);
15688                 return;
15689         }
15690
15691         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15692             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15693             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
15694                 goto nla_put_failure;
15695
15696         genlmsg_end(msg, hdr);
15697
15698         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15699                                 NL80211_MCGRP_MLME, GFP_KERNEL);
15700         return;
15701
15702  nla_put_failure:
15703         nlmsg_free(msg);
15704 }
15705
15706 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
15707                                struct net_device *netdev, u16 reason,
15708                                const u8 *ie, size_t ie_len, bool from_ap)
15709 {
15710         struct sk_buff *msg;
15711         void *hdr;
15712
15713         msg = nlmsg_new(100 + ie_len, GFP_KERNEL);
15714         if (!msg)
15715                 return;
15716
15717         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
15718         if (!hdr) {
15719                 nlmsg_free(msg);
15720                 return;
15721         }
15722
15723         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15724             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15725             (reason &&
15726              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) ||
15727             (from_ap &&
15728              nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) ||
15729             (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie)))
15730                 goto nla_put_failure;
15731
15732         genlmsg_end(msg, hdr);
15733
15734         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15735                                 NL80211_MCGRP_MLME, GFP_KERNEL);
15736         return;
15737
15738  nla_put_failure:
15739         nlmsg_free(msg);
15740 }
15741
15742 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
15743                              struct net_device *netdev, const u8 *bssid,
15744                              gfp_t gfp)
15745 {
15746         struct sk_buff *msg;
15747         void *hdr;
15748
15749         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15750         if (!msg)
15751                 return;
15752
15753         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
15754         if (!hdr) {
15755                 nlmsg_free(msg);
15756                 return;
15757         }
15758
15759         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15760             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15761             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
15762                 goto nla_put_failure;
15763
15764         genlmsg_end(msg, hdr);
15765
15766         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15767                                 NL80211_MCGRP_MLME, gfp);
15768         return;
15769
15770  nla_put_failure:
15771         nlmsg_free(msg);
15772 }
15773
15774 void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr,
15775                                         const u8 *ie, u8 ie_len,
15776                                         int sig_dbm, gfp_t gfp)
15777 {
15778         struct wireless_dev *wdev = dev->ieee80211_ptr;
15779         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
15780         struct sk_buff *msg;
15781         void *hdr;
15782
15783         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT))
15784                 return;
15785
15786         trace_cfg80211_notify_new_peer_candidate(dev, addr);
15787
15788         msg = nlmsg_new(100 + ie_len, gfp);
15789         if (!msg)
15790                 return;
15791
15792         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
15793         if (!hdr) {
15794                 nlmsg_free(msg);
15795                 return;
15796         }
15797
15798         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15799             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
15800             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
15801             (ie_len && ie &&
15802              nla_put(msg, NL80211_ATTR_IE, ie_len, ie)) ||
15803             (sig_dbm &&
15804              nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)))
15805                 goto nla_put_failure;
15806
15807         genlmsg_end(msg, hdr);
15808
15809         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15810                                 NL80211_MCGRP_MLME, gfp);
15811         return;
15812
15813  nla_put_failure:
15814         nlmsg_free(msg);
15815 }
15816 EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate);
15817
15818 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
15819                                  struct net_device *netdev, const u8 *addr,
15820                                  enum nl80211_key_type key_type, int key_id,
15821                                  const u8 *tsc, gfp_t gfp)
15822 {
15823         struct sk_buff *msg;
15824         void *hdr;
15825
15826         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15827         if (!msg)
15828                 return;
15829
15830         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
15831         if (!hdr) {
15832                 nlmsg_free(msg);
15833                 return;
15834         }
15835
15836         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15837             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15838             (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
15839             nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) ||
15840             (key_id != -1 &&
15841              nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) ||
15842             (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc)))
15843                 goto nla_put_failure;
15844
15845         genlmsg_end(msg, hdr);
15846
15847         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15848                                 NL80211_MCGRP_MLME, gfp);
15849         return;
15850
15851  nla_put_failure:
15852         nlmsg_free(msg);
15853 }
15854
15855 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
15856                                     struct ieee80211_channel *channel_before,
15857                                     struct ieee80211_channel *channel_after)
15858 {
15859         struct sk_buff *msg;
15860         void *hdr;
15861         struct nlattr *nl_freq;
15862
15863         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
15864         if (!msg)
15865                 return;
15866
15867         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
15868         if (!hdr) {
15869                 nlmsg_free(msg);
15870                 return;
15871         }
15872
15873         /*
15874          * Since we are applying the beacon hint to a wiphy we know its
15875          * wiphy_idx is valid
15876          */
15877         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
15878                 goto nla_put_failure;
15879
15880         /* Before */
15881         nl_freq = nla_nest_start_noflag(msg, NL80211_ATTR_FREQ_BEFORE);
15882         if (!nl_freq)
15883                 goto nla_put_failure;
15884
15885         if (nl80211_msg_put_channel(msg, wiphy, channel_before, false))
15886                 goto nla_put_failure;
15887         nla_nest_end(msg, nl_freq);
15888
15889         /* After */
15890         nl_freq = nla_nest_start_noflag(msg, NL80211_ATTR_FREQ_AFTER);
15891         if (!nl_freq)
15892                 goto nla_put_failure;
15893
15894         if (nl80211_msg_put_channel(msg, wiphy, channel_after, false))
15895                 goto nla_put_failure;
15896         nla_nest_end(msg, nl_freq);
15897
15898         genlmsg_end(msg, hdr);
15899
15900         rcu_read_lock();
15901         genlmsg_multicast_allns(&nl80211_fam, msg, 0,
15902                                 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
15903         rcu_read_unlock();
15904
15905         return;
15906
15907 nla_put_failure:
15908         nlmsg_free(msg);
15909 }
15910
15911 static void nl80211_send_remain_on_chan_event(
15912         int cmd, struct cfg80211_registered_device *rdev,
15913         struct wireless_dev *wdev, u64 cookie,
15914         struct ieee80211_channel *chan,
15915         unsigned int duration, gfp_t gfp)
15916 {
15917         struct sk_buff *msg;
15918         void *hdr;
15919
15920         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15921         if (!msg)
15922                 return;
15923
15924         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
15925         if (!hdr) {
15926                 nlmsg_free(msg);
15927                 return;
15928         }
15929
15930         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15931             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
15932                                          wdev->netdev->ifindex)) ||
15933             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
15934                               NL80211_ATTR_PAD) ||
15935             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) ||
15936             nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
15937                         NL80211_CHAN_NO_HT) ||
15938             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
15939                               NL80211_ATTR_PAD))
15940                 goto nla_put_failure;
15941
15942         if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL &&
15943             nla_put_u32(msg, NL80211_ATTR_DURATION, duration))
15944                 goto nla_put_failure;
15945
15946         genlmsg_end(msg, hdr);
15947
15948         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15949                                 NL80211_MCGRP_MLME, gfp);
15950         return;
15951
15952  nla_put_failure:
15953         nlmsg_free(msg);
15954 }
15955
15956 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie,
15957                                struct ieee80211_channel *chan,
15958                                unsigned int duration, gfp_t gfp)
15959 {
15960         struct wiphy *wiphy = wdev->wiphy;
15961         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15962
15963         trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration);
15964         nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
15965                                           rdev, wdev, cookie, chan,
15966                                           duration, gfp);
15967 }
15968 EXPORT_SYMBOL(cfg80211_ready_on_channel);
15969
15970 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie,
15971                                         struct ieee80211_channel *chan,
15972                                         gfp_t gfp)
15973 {
15974         struct wiphy *wiphy = wdev->wiphy;
15975         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15976
15977         trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan);
15978         nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
15979                                           rdev, wdev, cookie, chan, 0, gfp);
15980 }
15981 EXPORT_SYMBOL(cfg80211_remain_on_channel_expired);
15982
15983 void cfg80211_tx_mgmt_expired(struct wireless_dev *wdev, u64 cookie,
15984                                         struct ieee80211_channel *chan,
15985                                         gfp_t gfp)
15986 {
15987         struct wiphy *wiphy = wdev->wiphy;
15988         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15989
15990         trace_cfg80211_tx_mgmt_expired(wdev, cookie, chan);
15991         nl80211_send_remain_on_chan_event(NL80211_CMD_FRAME_WAIT_CANCEL,
15992                                           rdev, wdev, cookie, chan, 0, gfp);
15993 }
15994 EXPORT_SYMBOL(cfg80211_tx_mgmt_expired);
15995
15996 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr,
15997                       struct station_info *sinfo, gfp_t gfp)
15998 {
15999         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
16000         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16001         struct sk_buff *msg;
16002
16003         trace_cfg80211_new_sta(dev, mac_addr, sinfo);
16004
16005         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16006         if (!msg)
16007                 return;
16008
16009         if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION, 0, 0, 0,
16010                                  rdev, dev, mac_addr, sinfo) < 0) {
16011                 nlmsg_free(msg);
16012                 return;
16013         }
16014
16015         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16016                                 NL80211_MCGRP_MLME, gfp);
16017 }
16018 EXPORT_SYMBOL(cfg80211_new_sta);
16019
16020 void cfg80211_del_sta_sinfo(struct net_device *dev, const u8 *mac_addr,
16021                             struct station_info *sinfo, gfp_t gfp)
16022 {
16023         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
16024         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16025         struct sk_buff *msg;
16026         struct station_info empty_sinfo = {};
16027
16028         if (!sinfo)
16029                 sinfo = &empty_sinfo;
16030
16031         trace_cfg80211_del_sta(dev, mac_addr);
16032
16033         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16034         if (!msg) {
16035                 cfg80211_sinfo_release_content(sinfo);
16036                 return;
16037         }
16038
16039         if (nl80211_send_station(msg, NL80211_CMD_DEL_STATION, 0, 0, 0,
16040                                  rdev, dev, mac_addr, sinfo) < 0) {
16041                 nlmsg_free(msg);
16042                 return;
16043         }
16044
16045         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16046                                 NL80211_MCGRP_MLME, gfp);
16047 }
16048 EXPORT_SYMBOL(cfg80211_del_sta_sinfo);
16049
16050 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr,
16051                           enum nl80211_connect_failed_reason reason,
16052                           gfp_t gfp)
16053 {
16054         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
16055         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16056         struct sk_buff *msg;
16057         void *hdr;
16058
16059         msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
16060         if (!msg)
16061                 return;
16062
16063         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED);
16064         if (!hdr) {
16065                 nlmsg_free(msg);
16066                 return;
16067         }
16068
16069         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
16070             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
16071             nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason))
16072                 goto nla_put_failure;
16073
16074         genlmsg_end(msg, hdr);
16075
16076         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16077                                 NL80211_MCGRP_MLME, gfp);
16078         return;
16079
16080  nla_put_failure:
16081         nlmsg_free(msg);
16082 }
16083 EXPORT_SYMBOL(cfg80211_conn_failed);
16084
16085 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
16086                                        const u8 *addr, gfp_t gfp)
16087 {
16088         struct wireless_dev *wdev = dev->ieee80211_ptr;
16089         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16090         struct sk_buff *msg;
16091         void *hdr;
16092         u32 nlportid = READ_ONCE(wdev->ap_unexpected_nlportid);
16093
16094         if (!nlportid)
16095                 return false;
16096
16097         msg = nlmsg_new(100, gfp);
16098         if (!msg)
16099                 return true;
16100
16101         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
16102         if (!hdr) {
16103                 nlmsg_free(msg);
16104                 return true;
16105         }
16106
16107         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16108             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
16109             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
16110                 goto nla_put_failure;
16111
16112         genlmsg_end(msg, hdr);
16113         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
16114         return true;
16115
16116  nla_put_failure:
16117         nlmsg_free(msg);
16118         return true;
16119 }
16120
16121 bool cfg80211_rx_spurious_frame(struct net_device *dev,
16122                                 const u8 *addr, gfp_t gfp)
16123 {
16124         struct wireless_dev *wdev = dev->ieee80211_ptr;
16125         bool ret;
16126
16127         trace_cfg80211_rx_spurious_frame(dev, addr);
16128
16129         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
16130                     wdev->iftype != NL80211_IFTYPE_P2P_GO)) {
16131                 trace_cfg80211_return_bool(false);
16132                 return false;
16133         }
16134         ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
16135                                          addr, gfp);
16136         trace_cfg80211_return_bool(ret);
16137         return ret;
16138 }
16139 EXPORT_SYMBOL(cfg80211_rx_spurious_frame);
16140
16141 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev,
16142                                         const u8 *addr, gfp_t gfp)
16143 {
16144         struct wireless_dev *wdev = dev->ieee80211_ptr;
16145         bool ret;
16146
16147         trace_cfg80211_rx_unexpected_4addr_frame(dev, addr);
16148
16149         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
16150                     wdev->iftype != NL80211_IFTYPE_P2P_GO &&
16151                     wdev->iftype != NL80211_IFTYPE_AP_VLAN)) {
16152                 trace_cfg80211_return_bool(false);
16153                 return false;
16154         }
16155         ret = __nl80211_unexpected_frame(dev,
16156                                          NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
16157                                          addr, gfp);
16158         trace_cfg80211_return_bool(ret);
16159         return ret;
16160 }
16161 EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame);
16162
16163 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
16164                       struct wireless_dev *wdev, u32 nlportid,
16165                       int freq, int sig_dbm,
16166                       const u8 *buf, size_t len, u32 flags, gfp_t gfp)
16167 {
16168         struct net_device *netdev = wdev->netdev;
16169         struct sk_buff *msg;
16170         void *hdr;
16171
16172         msg = nlmsg_new(100 + len, gfp);
16173         if (!msg)
16174                 return -ENOMEM;
16175
16176         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
16177         if (!hdr) {
16178                 nlmsg_free(msg);
16179                 return -ENOMEM;
16180         }
16181
16182         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16183             (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
16184                                         netdev->ifindex)) ||
16185             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
16186                               NL80211_ATTR_PAD) ||
16187             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) ||
16188             (sig_dbm &&
16189              nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
16190             nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
16191             (flags &&
16192              nla_put_u32(msg, NL80211_ATTR_RXMGMT_FLAGS, flags)))
16193                 goto nla_put_failure;
16194
16195         genlmsg_end(msg, hdr);
16196
16197         return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
16198
16199  nla_put_failure:
16200         nlmsg_free(msg);
16201         return -ENOBUFS;
16202 }
16203
16204 void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie,
16205                              const u8 *buf, size_t len, bool ack, gfp_t gfp)
16206 {
16207         struct wiphy *wiphy = wdev->wiphy;
16208         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16209         struct net_device *netdev = wdev->netdev;
16210         struct sk_buff *msg;
16211         void *hdr;
16212
16213         trace_cfg80211_mgmt_tx_status(wdev, cookie, ack);
16214
16215         msg = nlmsg_new(100 + len, gfp);
16216         if (!msg)
16217                 return;
16218
16219         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS);
16220         if (!hdr) {
16221                 nlmsg_free(msg);
16222                 return;
16223         }
16224
16225         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16226             (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
16227                                    netdev->ifindex)) ||
16228             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
16229                               NL80211_ATTR_PAD) ||
16230             nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
16231             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
16232                               NL80211_ATTR_PAD) ||
16233             (ack && nla_put_flag(msg, NL80211_ATTR_ACK)))
16234                 goto nla_put_failure;
16235
16236         genlmsg_end(msg, hdr);
16237
16238         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16239                                 NL80211_MCGRP_MLME, gfp);
16240         return;
16241
16242  nla_put_failure:
16243         nlmsg_free(msg);
16244 }
16245 EXPORT_SYMBOL(cfg80211_mgmt_tx_status);
16246
16247 static int __nl80211_rx_control_port(struct net_device *dev,
16248                                      struct sk_buff *skb,
16249                                      bool unencrypted, gfp_t gfp)
16250 {
16251         struct wireless_dev *wdev = dev->ieee80211_ptr;
16252         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16253         struct ethhdr *ehdr = eth_hdr(skb);
16254         const u8 *addr = ehdr->h_source;
16255         u16 proto = be16_to_cpu(skb->protocol);
16256         struct sk_buff *msg;
16257         void *hdr;
16258         struct nlattr *frame;
16259
16260         u32 nlportid = READ_ONCE(wdev->conn_owner_nlportid);
16261
16262         if (!nlportid)
16263                 return -ENOENT;
16264
16265         msg = nlmsg_new(100 + skb->len, gfp);
16266         if (!msg)
16267                 return -ENOMEM;
16268
16269         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONTROL_PORT_FRAME);
16270         if (!hdr) {
16271                 nlmsg_free(msg);
16272                 return -ENOBUFS;
16273         }
16274
16275         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16276             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
16277             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
16278                               NL80211_ATTR_PAD) ||
16279             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
16280             nla_put_u16(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE, proto) ||
16281             (unencrypted && nla_put_flag(msg,
16282                                          NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT)))
16283                 goto nla_put_failure;
16284
16285         frame = nla_reserve(msg, NL80211_ATTR_FRAME, skb->len);
16286         if (!frame)
16287                 goto nla_put_failure;
16288
16289         skb_copy_bits(skb, 0, nla_data(frame), skb->len);
16290         genlmsg_end(msg, hdr);
16291
16292         return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
16293
16294  nla_put_failure:
16295         nlmsg_free(msg);
16296         return -ENOBUFS;
16297 }
16298
16299 bool cfg80211_rx_control_port(struct net_device *dev,
16300                               struct sk_buff *skb, bool unencrypted)
16301 {
16302         int ret;
16303
16304         trace_cfg80211_rx_control_port(dev, skb, unencrypted);
16305         ret = __nl80211_rx_control_port(dev, skb, unencrypted, GFP_ATOMIC);
16306         trace_cfg80211_return_bool(ret == 0);
16307         return ret == 0;
16308 }
16309 EXPORT_SYMBOL(cfg80211_rx_control_port);
16310
16311 static struct sk_buff *cfg80211_prepare_cqm(struct net_device *dev,
16312                                             const char *mac, gfp_t gfp)
16313 {
16314         struct wireless_dev *wdev = dev->ieee80211_ptr;
16315         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16316         struct sk_buff *msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16317         void **cb;
16318
16319         if (!msg)
16320                 return NULL;
16321
16322         cb = (void **)msg->cb;
16323
16324         cb[0] = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
16325         if (!cb[0]) {
16326                 nlmsg_free(msg);
16327                 return NULL;
16328         }
16329
16330         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16331             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
16332                 goto nla_put_failure;
16333
16334         if (mac && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
16335                 goto nla_put_failure;
16336
16337         cb[1] = nla_nest_start_noflag(msg, NL80211_ATTR_CQM);
16338         if (!cb[1])
16339                 goto nla_put_failure;
16340
16341         cb[2] = rdev;
16342
16343         return msg;
16344  nla_put_failure:
16345         nlmsg_free(msg);
16346         return NULL;
16347 }
16348
16349 static void cfg80211_send_cqm(struct sk_buff *msg, gfp_t gfp)
16350 {
16351         void **cb = (void **)msg->cb;
16352         struct cfg80211_registered_device *rdev = cb[2];
16353
16354         nla_nest_end(msg, cb[1]);
16355         genlmsg_end(msg, cb[0]);
16356
16357         memset(msg->cb, 0, sizeof(msg->cb));
16358
16359         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16360                                 NL80211_MCGRP_MLME, gfp);
16361 }
16362
16363 void cfg80211_cqm_rssi_notify(struct net_device *dev,
16364                               enum nl80211_cqm_rssi_threshold_event rssi_event,
16365                               s32 rssi_level, gfp_t gfp)
16366 {
16367         struct sk_buff *msg;
16368         struct wireless_dev *wdev = dev->ieee80211_ptr;
16369         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16370
16371         trace_cfg80211_cqm_rssi_notify(dev, rssi_event, rssi_level);
16372
16373         if (WARN_ON(rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW &&
16374                     rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH))
16375                 return;
16376
16377         if (wdev->cqm_config) {
16378                 wdev->cqm_config->last_rssi_event_value = rssi_level;
16379
16380                 cfg80211_cqm_rssi_update(rdev, dev);
16381
16382                 if (rssi_level == 0)
16383                         rssi_level = wdev->cqm_config->last_rssi_event_value;
16384         }
16385
16386         msg = cfg80211_prepare_cqm(dev, NULL, gfp);
16387         if (!msg)
16388                 return;
16389
16390         if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
16391                         rssi_event))
16392                 goto nla_put_failure;
16393
16394         if (rssi_level && nla_put_s32(msg, NL80211_ATTR_CQM_RSSI_LEVEL,
16395                                       rssi_level))
16396                 goto nla_put_failure;
16397
16398         cfg80211_send_cqm(msg, gfp);
16399
16400         return;
16401
16402  nla_put_failure:
16403         nlmsg_free(msg);
16404 }
16405 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify);
16406
16407 void cfg80211_cqm_txe_notify(struct net_device *dev,
16408                              const u8 *peer, u32 num_packets,
16409                              u32 rate, u32 intvl, gfp_t gfp)
16410 {
16411         struct sk_buff *msg;
16412
16413         msg = cfg80211_prepare_cqm(dev, peer, gfp);
16414         if (!msg)
16415                 return;
16416
16417         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets))
16418                 goto nla_put_failure;
16419
16420         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate))
16421                 goto nla_put_failure;
16422
16423         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl))
16424                 goto nla_put_failure;
16425
16426         cfg80211_send_cqm(msg, gfp);
16427         return;
16428
16429  nla_put_failure:
16430         nlmsg_free(msg);
16431 }
16432 EXPORT_SYMBOL(cfg80211_cqm_txe_notify);
16433
16434 void cfg80211_cqm_pktloss_notify(struct net_device *dev,
16435                                  const u8 *peer, u32 num_packets, gfp_t gfp)
16436 {
16437         struct sk_buff *msg;
16438
16439         trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets);
16440
16441         msg = cfg80211_prepare_cqm(dev, peer, gfp);
16442         if (!msg)
16443                 return;
16444
16445         if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets))
16446                 goto nla_put_failure;
16447
16448         cfg80211_send_cqm(msg, gfp);
16449         return;
16450
16451  nla_put_failure:
16452         nlmsg_free(msg);
16453 }
16454 EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify);
16455
16456 void cfg80211_cqm_beacon_loss_notify(struct net_device *dev, gfp_t gfp)
16457 {
16458         struct sk_buff *msg;
16459
16460         msg = cfg80211_prepare_cqm(dev, NULL, gfp);
16461         if (!msg)
16462                 return;
16463
16464         if (nla_put_flag(msg, NL80211_ATTR_CQM_BEACON_LOSS_EVENT))
16465                 goto nla_put_failure;
16466
16467         cfg80211_send_cqm(msg, gfp);
16468         return;
16469
16470  nla_put_failure:
16471         nlmsg_free(msg);
16472 }
16473 EXPORT_SYMBOL(cfg80211_cqm_beacon_loss_notify);
16474
16475 static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
16476                                      struct net_device *netdev, const u8 *bssid,
16477                                      const u8 *replay_ctr, gfp_t gfp)
16478 {
16479         struct sk_buff *msg;
16480         struct nlattr *rekey_attr;
16481         void *hdr;
16482
16483         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16484         if (!msg)
16485                 return;
16486
16487         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
16488         if (!hdr) {
16489                 nlmsg_free(msg);
16490                 return;
16491         }
16492
16493         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16494             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16495             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
16496                 goto nla_put_failure;
16497
16498         rekey_attr = nla_nest_start_noflag(msg, NL80211_ATTR_REKEY_DATA);
16499         if (!rekey_attr)
16500                 goto nla_put_failure;
16501
16502         if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR,
16503                     NL80211_REPLAY_CTR_LEN, replay_ctr))
16504                 goto nla_put_failure;
16505
16506         nla_nest_end(msg, rekey_attr);
16507
16508         genlmsg_end(msg, hdr);
16509
16510         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16511                                 NL80211_MCGRP_MLME, gfp);
16512         return;
16513
16514  nla_put_failure:
16515         nlmsg_free(msg);
16516 }
16517
16518 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid,
16519                                const u8 *replay_ctr, gfp_t gfp)
16520 {
16521         struct wireless_dev *wdev = dev->ieee80211_ptr;
16522         struct wiphy *wiphy = wdev->wiphy;
16523         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16524
16525         trace_cfg80211_gtk_rekey_notify(dev, bssid);
16526         nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp);
16527 }
16528 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify);
16529
16530 static void
16531 nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
16532                                struct net_device *netdev, int index,
16533                                const u8 *bssid, bool preauth, gfp_t gfp)
16534 {
16535         struct sk_buff *msg;
16536         struct nlattr *attr;
16537         void *hdr;
16538
16539         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16540         if (!msg)
16541                 return;
16542
16543         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
16544         if (!hdr) {
16545                 nlmsg_free(msg);
16546                 return;
16547         }
16548
16549         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16550             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
16551                 goto nla_put_failure;
16552
16553         attr = nla_nest_start_noflag(msg, NL80211_ATTR_PMKSA_CANDIDATE);
16554         if (!attr)
16555                 goto nla_put_failure;
16556
16557         if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) ||
16558             nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) ||
16559             (preauth &&
16560              nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH)))
16561                 goto nla_put_failure;
16562
16563         nla_nest_end(msg, attr);
16564
16565         genlmsg_end(msg, hdr);
16566
16567         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16568                                 NL80211_MCGRP_MLME, gfp);
16569         return;
16570
16571  nla_put_failure:
16572         nlmsg_free(msg);
16573 }
16574
16575 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index,
16576                                      const u8 *bssid, bool preauth, gfp_t gfp)
16577 {
16578         struct wireless_dev *wdev = dev->ieee80211_ptr;
16579         struct wiphy *wiphy = wdev->wiphy;
16580         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16581
16582         trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth);
16583         nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp);
16584 }
16585 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify);
16586
16587 static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev,
16588                                      struct net_device *netdev,
16589                                      struct cfg80211_chan_def *chandef,
16590                                      gfp_t gfp,
16591                                      enum nl80211_commands notif,
16592                                      u8 count)
16593 {
16594         struct sk_buff *msg;
16595         void *hdr;
16596
16597         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16598         if (!msg)
16599                 return;
16600
16601         hdr = nl80211hdr_put(msg, 0, 0, 0, notif);
16602         if (!hdr) {
16603                 nlmsg_free(msg);
16604                 return;
16605         }
16606
16607         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
16608                 goto nla_put_failure;
16609
16610         if (nl80211_send_chandef(msg, chandef))
16611                 goto nla_put_failure;
16612
16613         if ((notif == NL80211_CMD_CH_SWITCH_STARTED_NOTIFY) &&
16614             (nla_put_u32(msg, NL80211_ATTR_CH_SWITCH_COUNT, count)))
16615                         goto nla_put_failure;
16616
16617         genlmsg_end(msg, hdr);
16618
16619         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16620                                 NL80211_MCGRP_MLME, gfp);
16621         return;
16622
16623  nla_put_failure:
16624         nlmsg_free(msg);
16625 }
16626
16627 void cfg80211_ch_switch_notify(struct net_device *dev,
16628                                struct cfg80211_chan_def *chandef)
16629 {
16630         struct wireless_dev *wdev = dev->ieee80211_ptr;
16631         struct wiphy *wiphy = wdev->wiphy;
16632         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16633
16634         ASSERT_WDEV_LOCK(wdev);
16635
16636         trace_cfg80211_ch_switch_notify(dev, chandef);
16637
16638         wdev->chandef = *chandef;
16639         wdev->preset_chandef = *chandef;
16640
16641         if (wdev->iftype == NL80211_IFTYPE_STATION &&
16642             !WARN_ON(!wdev->current_bss))
16643                 cfg80211_update_assoc_bss_entry(wdev, chandef->chan);
16644
16645         cfg80211_sched_dfs_chan_update(rdev);
16646
16647         nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
16648                                  NL80211_CMD_CH_SWITCH_NOTIFY, 0);
16649 }
16650 EXPORT_SYMBOL(cfg80211_ch_switch_notify);
16651
16652 void cfg80211_ch_switch_started_notify(struct net_device *dev,
16653                                        struct cfg80211_chan_def *chandef,
16654                                        u8 count)
16655 {
16656         struct wireless_dev *wdev = dev->ieee80211_ptr;
16657         struct wiphy *wiphy = wdev->wiphy;
16658         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16659
16660         trace_cfg80211_ch_switch_started_notify(dev, chandef);
16661
16662         nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
16663                                  NL80211_CMD_CH_SWITCH_STARTED_NOTIFY, count);
16664 }
16665 EXPORT_SYMBOL(cfg80211_ch_switch_started_notify);
16666
16667 void
16668 nl80211_radar_notify(struct cfg80211_registered_device *rdev,
16669                      const struct cfg80211_chan_def *chandef,
16670                      enum nl80211_radar_event event,
16671                      struct net_device *netdev, gfp_t gfp)
16672 {
16673         struct sk_buff *msg;
16674         void *hdr;
16675
16676         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16677         if (!msg)
16678                 return;
16679
16680         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT);
16681         if (!hdr) {
16682                 nlmsg_free(msg);
16683                 return;
16684         }
16685
16686         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
16687                 goto nla_put_failure;
16688
16689         /* NOP and radar events don't need a netdev parameter */
16690         if (netdev) {
16691                 struct wireless_dev *wdev = netdev->ieee80211_ptr;
16692
16693                 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16694                     nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
16695                                       NL80211_ATTR_PAD))
16696                         goto nla_put_failure;
16697         }
16698
16699         if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event))
16700                 goto nla_put_failure;
16701
16702         if (nl80211_send_chandef(msg, chandef))
16703                 goto nla_put_failure;
16704
16705         genlmsg_end(msg, hdr);
16706
16707         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16708                                 NL80211_MCGRP_MLME, gfp);
16709         return;
16710
16711  nla_put_failure:
16712         nlmsg_free(msg);
16713 }
16714
16715 void cfg80211_sta_opmode_change_notify(struct net_device *dev, const u8 *mac,
16716                                        struct sta_opmode_info *sta_opmode,
16717                                        gfp_t gfp)
16718 {
16719         struct sk_buff *msg;
16720         struct wireless_dev *wdev = dev->ieee80211_ptr;
16721         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16722         void *hdr;
16723
16724         if (WARN_ON(!mac))
16725                 return;
16726
16727         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16728         if (!msg)
16729                 return;
16730
16731         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STA_OPMODE_CHANGED);
16732         if (!hdr) {
16733                 nlmsg_free(msg);
16734                 return;
16735         }
16736
16737         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
16738                 goto nla_put_failure;
16739
16740         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
16741                 goto nla_put_failure;
16742
16743         if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
16744                 goto nla_put_failure;
16745
16746         if ((sta_opmode->changed & STA_OPMODE_SMPS_MODE_CHANGED) &&
16747             nla_put_u8(msg, NL80211_ATTR_SMPS_MODE, sta_opmode->smps_mode))
16748                 goto nla_put_failure;
16749
16750         if ((sta_opmode->changed & STA_OPMODE_MAX_BW_CHANGED) &&
16751             nla_put_u8(msg, NL80211_ATTR_CHANNEL_WIDTH, sta_opmode->bw))
16752                 goto nla_put_failure;
16753
16754         if ((sta_opmode->changed & STA_OPMODE_N_SS_CHANGED) &&
16755             nla_put_u8(msg, NL80211_ATTR_NSS, sta_opmode->rx_nss))
16756                 goto nla_put_failure;
16757
16758         genlmsg_end(msg, hdr);
16759
16760         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16761                                 NL80211_MCGRP_MLME, gfp);
16762
16763         return;
16764
16765 nla_put_failure:
16766         nlmsg_free(msg);
16767 }
16768 EXPORT_SYMBOL(cfg80211_sta_opmode_change_notify);
16769
16770 void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
16771                            u64 cookie, bool acked, s32 ack_signal,
16772                            bool is_valid_ack_signal, gfp_t gfp)
16773 {
16774         struct wireless_dev *wdev = dev->ieee80211_ptr;
16775         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16776         struct sk_buff *msg;
16777         void *hdr;
16778
16779         trace_cfg80211_probe_status(dev, addr, cookie, acked);
16780
16781         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16782
16783         if (!msg)
16784                 return;
16785
16786         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT);
16787         if (!hdr) {
16788                 nlmsg_free(msg);
16789                 return;
16790         }
16791
16792         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16793             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
16794             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
16795             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
16796                               NL80211_ATTR_PAD) ||
16797             (acked && nla_put_flag(msg, NL80211_ATTR_ACK)) ||
16798             (is_valid_ack_signal && nla_put_s32(msg, NL80211_ATTR_ACK_SIGNAL,
16799                                                 ack_signal)))
16800                 goto nla_put_failure;
16801
16802         genlmsg_end(msg, hdr);
16803
16804         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16805                                 NL80211_MCGRP_MLME, gfp);
16806         return;
16807
16808  nla_put_failure:
16809         nlmsg_free(msg);
16810 }
16811 EXPORT_SYMBOL(cfg80211_probe_status);
16812
16813 void cfg80211_report_obss_beacon(struct wiphy *wiphy,
16814                                  const u8 *frame, size_t len,
16815                                  int freq, int sig_dbm)
16816 {
16817         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16818         struct sk_buff *msg;
16819         void *hdr;
16820         struct cfg80211_beacon_registration *reg;
16821
16822         trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm);
16823
16824         spin_lock_bh(&rdev->beacon_registrations_lock);
16825         list_for_each_entry(reg, &rdev->beacon_registrations, list) {
16826                 msg = nlmsg_new(len + 100, GFP_ATOMIC);
16827                 if (!msg) {
16828                         spin_unlock_bh(&rdev->beacon_registrations_lock);
16829                         return;
16830                 }
16831
16832                 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
16833                 if (!hdr)
16834                         goto nla_put_failure;
16835
16836                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16837                     (freq &&
16838                      nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq)) ||
16839                     (sig_dbm &&
16840                      nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
16841                     nla_put(msg, NL80211_ATTR_FRAME, len, frame))
16842                         goto nla_put_failure;
16843
16844                 genlmsg_end(msg, hdr);
16845
16846                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid);
16847         }
16848         spin_unlock_bh(&rdev->beacon_registrations_lock);
16849         return;
16850
16851  nla_put_failure:
16852         spin_unlock_bh(&rdev->beacon_registrations_lock);
16853         nlmsg_free(msg);
16854 }
16855 EXPORT_SYMBOL(cfg80211_report_obss_beacon);
16856
16857 #ifdef CONFIG_PM
16858 static int cfg80211_net_detect_results(struct sk_buff *msg,
16859                                        struct cfg80211_wowlan_wakeup *wakeup)
16860 {
16861         struct cfg80211_wowlan_nd_info *nd = wakeup->net_detect;
16862         struct nlattr *nl_results, *nl_match, *nl_freqs;
16863         int i, j;
16864
16865         nl_results = nla_nest_start_noflag(msg,
16866                                            NL80211_WOWLAN_TRIG_NET_DETECT_RESULTS);
16867         if (!nl_results)
16868                 return -EMSGSIZE;
16869
16870         for (i = 0; i < nd->n_matches; i++) {
16871                 struct cfg80211_wowlan_nd_match *match = nd->matches[i];
16872
16873                 nl_match = nla_nest_start_noflag(msg, i);
16874                 if (!nl_match)
16875                         break;
16876
16877                 /* The SSID attribute is optional in nl80211, but for
16878                  * simplicity reasons it's always present in the
16879                  * cfg80211 structure.  If a driver can't pass the
16880                  * SSID, that needs to be changed.  A zero length SSID
16881                  * is still a valid SSID (wildcard), so it cannot be
16882                  * used for this purpose.
16883                  */
16884                 if (nla_put(msg, NL80211_ATTR_SSID, match->ssid.ssid_len,
16885                             match->ssid.ssid)) {
16886                         nla_nest_cancel(msg, nl_match);
16887                         goto out;
16888                 }
16889
16890                 if (match->n_channels) {
16891                         nl_freqs = nla_nest_start_noflag(msg,
16892                                                          NL80211_ATTR_SCAN_FREQUENCIES);
16893                         if (!nl_freqs) {
16894                                 nla_nest_cancel(msg, nl_match);
16895                                 goto out;
16896                         }
16897
16898                         for (j = 0; j < match->n_channels; j++) {
16899                                 if (nla_put_u32(msg, j, match->channels[j])) {
16900                                         nla_nest_cancel(msg, nl_freqs);
16901                                         nla_nest_cancel(msg, nl_match);
16902                                         goto out;
16903                                 }
16904                         }
16905
16906                         nla_nest_end(msg, nl_freqs);
16907                 }
16908
16909                 nla_nest_end(msg, nl_match);
16910         }
16911
16912 out:
16913         nla_nest_end(msg, nl_results);
16914         return 0;
16915 }
16916
16917 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev,
16918                                    struct cfg80211_wowlan_wakeup *wakeup,
16919                                    gfp_t gfp)
16920 {
16921         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16922         struct sk_buff *msg;
16923         void *hdr;
16924         int size = 200;
16925
16926         trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup);
16927
16928         if (wakeup)
16929                 size += wakeup->packet_present_len;
16930
16931         msg = nlmsg_new(size, gfp);
16932         if (!msg)
16933                 return;
16934
16935         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN);
16936         if (!hdr)
16937                 goto free_msg;
16938
16939         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16940             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
16941                               NL80211_ATTR_PAD))
16942                 goto free_msg;
16943
16944         if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
16945                                         wdev->netdev->ifindex))
16946                 goto free_msg;
16947
16948         if (wakeup) {
16949                 struct nlattr *reasons;
16950
16951                 reasons = nla_nest_start_noflag(msg,
16952                                                 NL80211_ATTR_WOWLAN_TRIGGERS);
16953                 if (!reasons)
16954                         goto free_msg;
16955
16956                 if (wakeup->disconnect &&
16957                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT))
16958                         goto free_msg;
16959                 if (wakeup->magic_pkt &&
16960                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT))
16961                         goto free_msg;
16962                 if (wakeup->gtk_rekey_failure &&
16963                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE))
16964                         goto free_msg;
16965                 if (wakeup->eap_identity_req &&
16966                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST))
16967                         goto free_msg;
16968                 if (wakeup->four_way_handshake &&
16969                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE))
16970                         goto free_msg;
16971                 if (wakeup->rfkill_release &&
16972                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))
16973                         goto free_msg;
16974
16975                 if (wakeup->pattern_idx >= 0 &&
16976                     nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
16977                                 wakeup->pattern_idx))
16978                         goto free_msg;
16979
16980                 if (wakeup->tcp_match &&
16981                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH))
16982                         goto free_msg;
16983
16984                 if (wakeup->tcp_connlost &&
16985                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST))
16986                         goto free_msg;
16987
16988                 if (wakeup->tcp_nomoretokens &&
16989                     nla_put_flag(msg,
16990                                  NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS))
16991                         goto free_msg;
16992
16993                 if (wakeup->packet) {
16994                         u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211;
16995                         u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN;
16996
16997                         if (!wakeup->packet_80211) {
16998                                 pkt_attr =
16999                                         NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023;
17000                                 len_attr =
17001                                         NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN;
17002                         }
17003
17004                         if (wakeup->packet_len &&
17005                             nla_put_u32(msg, len_attr, wakeup->packet_len))
17006                                 goto free_msg;
17007
17008                         if (nla_put(msg, pkt_attr, wakeup->packet_present_len,
17009                                     wakeup->packet))
17010                                 goto free_msg;
17011                 }
17012
17013                 if (wakeup->net_detect &&
17014                     cfg80211_net_detect_results(msg, wakeup))
17015                                 goto free_msg;
17016
17017                 nla_nest_end(msg, reasons);
17018         }
17019
17020         genlmsg_end(msg, hdr);
17021
17022         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17023                                 NL80211_MCGRP_MLME, gfp);
17024         return;
17025
17026  free_msg:
17027         nlmsg_free(msg);
17028 }
17029 EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup);
17030 #endif
17031
17032 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer,
17033                                 enum nl80211_tdls_operation oper,
17034                                 u16 reason_code, gfp_t gfp)
17035 {
17036         struct wireless_dev *wdev = dev->ieee80211_ptr;
17037         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
17038         struct sk_buff *msg;
17039         void *hdr;
17040
17041         trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper,
17042                                          reason_code);
17043
17044         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17045         if (!msg)
17046                 return;
17047
17048         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER);
17049         if (!hdr) {
17050                 nlmsg_free(msg);
17051                 return;
17052         }
17053
17054         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17055             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
17056             nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) ||
17057             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) ||
17058             (reason_code > 0 &&
17059              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code)))
17060                 goto nla_put_failure;
17061
17062         genlmsg_end(msg, hdr);
17063
17064         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17065                                 NL80211_MCGRP_MLME, gfp);
17066         return;
17067
17068  nla_put_failure:
17069         nlmsg_free(msg);
17070 }
17071 EXPORT_SYMBOL(cfg80211_tdls_oper_request);
17072
17073 static int nl80211_netlink_notify(struct notifier_block * nb,
17074                                   unsigned long state,
17075                                   void *_notify)
17076 {
17077         struct netlink_notify *notify = _notify;
17078         struct cfg80211_registered_device *rdev;
17079         struct wireless_dev *wdev;
17080         struct cfg80211_beacon_registration *reg, *tmp;
17081
17082         if (state != NETLINK_URELEASE || notify->protocol != NETLINK_GENERIC)
17083                 return NOTIFY_DONE;
17084
17085         rcu_read_lock();
17086
17087         list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
17088                 struct cfg80211_sched_scan_request *sched_scan_req;
17089
17090                 list_for_each_entry_rcu(sched_scan_req,
17091                                         &rdev->sched_scan_req_list,
17092                                         list) {
17093                         if (sched_scan_req->owner_nlportid == notify->portid) {
17094                                 sched_scan_req->nl_owner_dead = true;
17095                                 schedule_work(&rdev->sched_scan_stop_wk);
17096                         }
17097                 }
17098
17099                 list_for_each_entry_rcu(wdev, &rdev->wiphy.wdev_list, list) {
17100                         cfg80211_mlme_unregister_socket(wdev, notify->portid);
17101
17102                         if (wdev->owner_nlportid == notify->portid) {
17103                                 wdev->nl_owner_dead = true;
17104                                 schedule_work(&rdev->destroy_work);
17105                         } else if (wdev->conn_owner_nlportid == notify->portid) {
17106                                 schedule_work(&wdev->disconnect_wk);
17107                         }
17108
17109                         cfg80211_release_pmsr(wdev, notify->portid);
17110                 }
17111
17112                 spin_lock_bh(&rdev->beacon_registrations_lock);
17113                 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations,
17114                                          list) {
17115                         if (reg->nlportid == notify->portid) {
17116                                 list_del(&reg->list);
17117                                 kfree(reg);
17118                                 break;
17119                         }
17120                 }
17121                 spin_unlock_bh(&rdev->beacon_registrations_lock);
17122         }
17123
17124         rcu_read_unlock();
17125
17126         /*
17127          * It is possible that the user space process that is controlling the
17128          * indoor setting disappeared, so notify the regulatory core.
17129          */
17130         regulatory_netlink_notify(notify->portid);
17131         return NOTIFY_OK;
17132 }
17133
17134 static struct notifier_block nl80211_netlink_notifier = {
17135         .notifier_call = nl80211_netlink_notify,
17136 };
17137
17138 void cfg80211_ft_event(struct net_device *netdev,
17139                        struct cfg80211_ft_event_params *ft_event)
17140 {
17141         struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
17142         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
17143         struct sk_buff *msg;
17144         void *hdr;
17145
17146         trace_cfg80211_ft_event(wiphy, netdev, ft_event);
17147
17148         if (!ft_event->target_ap)
17149                 return;
17150
17151         msg = nlmsg_new(100 + ft_event->ies_len + ft_event->ric_ies_len,
17152                         GFP_KERNEL);
17153         if (!msg)
17154                 return;
17155
17156         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT);
17157         if (!hdr)
17158                 goto out;
17159
17160         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17161             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
17162             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap))
17163                 goto out;
17164
17165         if (ft_event->ies &&
17166             nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies))
17167                 goto out;
17168         if (ft_event->ric_ies &&
17169             nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len,
17170                     ft_event->ric_ies))
17171                 goto out;
17172
17173         genlmsg_end(msg, hdr);
17174
17175         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17176                                 NL80211_MCGRP_MLME, GFP_KERNEL);
17177         return;
17178  out:
17179         nlmsg_free(msg);
17180 }
17181 EXPORT_SYMBOL(cfg80211_ft_event);
17182
17183 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp)
17184 {
17185         struct cfg80211_registered_device *rdev;
17186         struct sk_buff *msg;
17187         void *hdr;
17188         u32 nlportid;
17189
17190         rdev = wiphy_to_rdev(wdev->wiphy);
17191         if (!rdev->crit_proto_nlportid)
17192                 return;
17193
17194         nlportid = rdev->crit_proto_nlportid;
17195         rdev->crit_proto_nlportid = 0;
17196
17197         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17198         if (!msg)
17199                 return;
17200
17201         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP);
17202         if (!hdr)
17203                 goto nla_put_failure;
17204
17205         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17206             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
17207                               NL80211_ATTR_PAD))
17208                 goto nla_put_failure;
17209
17210         genlmsg_end(msg, hdr);
17211
17212         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
17213         return;
17214
17215  nla_put_failure:
17216         nlmsg_free(msg);
17217 }
17218 EXPORT_SYMBOL(cfg80211_crit_proto_stopped);
17219
17220 void nl80211_send_ap_stopped(struct wireless_dev *wdev)
17221 {
17222         struct wiphy *wiphy = wdev->wiphy;
17223         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
17224         struct sk_buff *msg;
17225         void *hdr;
17226
17227         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
17228         if (!msg)
17229                 return;
17230
17231         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STOP_AP);
17232         if (!hdr)
17233                 goto out;
17234
17235         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17236             nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex) ||
17237             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
17238                               NL80211_ATTR_PAD))
17239                 goto out;
17240
17241         genlmsg_end(msg, hdr);
17242
17243         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(wiphy), msg, 0,
17244                                 NL80211_MCGRP_MLME, GFP_KERNEL);
17245         return;
17246  out:
17247         nlmsg_free(msg);
17248 }
17249
17250 int cfg80211_external_auth_request(struct net_device *dev,
17251                                    struct cfg80211_external_auth_params *params,
17252                                    gfp_t gfp)
17253 {
17254         struct wireless_dev *wdev = dev->ieee80211_ptr;
17255         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
17256         struct sk_buff *msg;
17257         void *hdr;
17258
17259         if (!wdev->conn_owner_nlportid)
17260                 return -EINVAL;
17261
17262         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17263         if (!msg)
17264                 return -ENOMEM;
17265
17266         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_EXTERNAL_AUTH);
17267         if (!hdr)
17268                 goto nla_put_failure;
17269
17270         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17271             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
17272             nla_put_u32(msg, NL80211_ATTR_AKM_SUITES, params->key_mgmt_suite) ||
17273             nla_put_u32(msg, NL80211_ATTR_EXTERNAL_AUTH_ACTION,
17274                         params->action) ||
17275             nla_put(msg, NL80211_ATTR_BSSID, ETH_ALEN, params->bssid) ||
17276             nla_put(msg, NL80211_ATTR_SSID, params->ssid.ssid_len,
17277                     params->ssid.ssid))
17278                 goto nla_put_failure;
17279
17280         genlmsg_end(msg, hdr);
17281         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
17282                         wdev->conn_owner_nlportid);
17283         return 0;
17284
17285  nla_put_failure:
17286         nlmsg_free(msg);
17287         return -ENOBUFS;
17288 }
17289 EXPORT_SYMBOL(cfg80211_external_auth_request);
17290
17291 void cfg80211_update_owe_info_event(struct net_device *netdev,
17292                                     struct cfg80211_update_owe_info *owe_info,
17293                                     gfp_t gfp)
17294 {
17295         struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
17296         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
17297         struct sk_buff *msg;
17298         void *hdr;
17299
17300         trace_cfg80211_update_owe_info_event(wiphy, netdev, owe_info);
17301
17302         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17303         if (!msg)
17304                 return;
17305
17306         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_UPDATE_OWE_INFO);
17307         if (!hdr)
17308                 goto nla_put_failure;
17309
17310         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17311             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
17312             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, owe_info->peer))
17313                 goto nla_put_failure;
17314
17315         if (!owe_info->ie_len ||
17316             nla_put(msg, NL80211_ATTR_IE, owe_info->ie_len, owe_info->ie))
17317                 goto nla_put_failure;
17318
17319         genlmsg_end(msg, hdr);
17320
17321         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17322                                 NL80211_MCGRP_MLME, gfp);
17323         return;
17324
17325 nla_put_failure:
17326         genlmsg_cancel(msg, hdr);
17327         nlmsg_free(msg);
17328 }
17329 EXPORT_SYMBOL(cfg80211_update_owe_info_event);
17330
17331 /* initialisation/exit functions */
17332
17333 int __init nl80211_init(void)
17334 {
17335         int err;
17336
17337         err = genl_register_family(&nl80211_fam);
17338         if (err)
17339                 return err;
17340
17341         err = netlink_register_notifier(&nl80211_netlink_notifier);
17342         if (err)
17343                 goto err_out;
17344
17345         return 0;
17346  err_out:
17347         genl_unregister_family(&nl80211_fam);
17348         return err;
17349 }
17350
17351 void nl80211_exit(void)
17352 {
17353         netlink_unregister_notifier(&nl80211_netlink_notifier);
17354         genl_unregister_family(&nl80211_fam);
17355 }