net/wireless/nl80211.c

   1 /*
   2  * This is the new netlink-based wireless configuration interface.
   3  *
   4  * Copyright 2006-2010  Johannes Berg <johannes@sipsolutions.net>
   5  * Copyright 2013-2014  Intel Mobile Communications GmbH
   6  * Copyright 2015-2017  Intel Deutschland GmbH
   7  * Copyright (C) 2018 Intel Corporation
   8  */
   9
  10 #include <linux/if.h>
  11 #include <linux/module.h>
  12 #include <linux/err.h>
  13 #include <linux/slab.h>
  14 #include <linux/list.h>
  15 #include <linux/if_ether.h>
  16 #include <linux/ieee80211.h>
  17 #include <linux/nl80211.h>
  18 #include <linux/rtnetlink.h>
  19 #include <linux/netlink.h>
  20 #include <linux/nospec.h>
  21 #include <linux/etherdevice.h>
  22 #include <net/net_namespace.h>
  23 #include <net/genetlink.h>
  24 #include <net/cfg80211.h>
  25 #include <net/sock.h>
  26 #include <net/inet_connection_sock.h>
  27 #include "core.h"
  28 #include "nl80211.h"
  29 #include "reg.h"
  30 #include "rdev-ops.h"
  31
  32 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
  33                                    struct genl_info *info,
  34                                    struct cfg80211_crypto_settings *settings,
  35                                    int cipher_limit);
  36
  37 /* the netlink family */
  38 static struct genl_family nl80211_fam;
  39
  40 /* multicast groups */
  41 enum nl80211_multicast_groups {
  42         NL80211_MCGRP_CONFIG,
  43         NL80211_MCGRP_SCAN,
  44         NL80211_MCGRP_REGULATORY,
  45         NL80211_MCGRP_MLME,
  46         NL80211_MCGRP_VENDOR,
  47         NL80211_MCGRP_NAN,
  48         NL80211_MCGRP_TESTMODE /* keep last - ifdef! */
  49 };
  50
  51 static const struct genl_multicast_group nl80211_mcgrps[] = {
  52         [NL80211_MCGRP_CONFIG] = { .name = NL80211_MULTICAST_GROUP_CONFIG },
  53         [NL80211_MCGRP_SCAN] = { .name = NL80211_MULTICAST_GROUP_SCAN },
  54         [NL80211_MCGRP_REGULATORY] = { .name = NL80211_MULTICAST_GROUP_REG },
  55         [NL80211_MCGRP_MLME] = { .name = NL80211_MULTICAST_GROUP_MLME },
  56         [NL80211_MCGRP_VENDOR] = { .name = NL80211_MULTICAST_GROUP_VENDOR },
  57         [NL80211_MCGRP_NAN] = { .name = NL80211_MULTICAST_GROUP_NAN },
  58 #ifdef CONFIG_NL80211_TESTMODE
  59         [NL80211_MCGRP_TESTMODE] = { .name = NL80211_MULTICAST_GROUP_TESTMODE }
  60 #endif
  61 };
  62
  63 /* returns ERR_PTR values */
  64 static struct wireless_dev *
  65 __cfg80211_wdev_from_attrs(struct net *netns, struct nlattr **attrs)
  66 {
  67         struct cfg80211_registered_device *rdev;
  68         struct wireless_dev *result = NULL;
  69         bool have_ifidx = attrs[NL80211_ATTR_IFINDEX];
  70         bool have_wdev_id = attrs[NL80211_ATTR_WDEV];
  71         u64 wdev_id;
  72         int wiphy_idx = -1;
  73         int ifidx = -1;
  74
  75         ASSERT_RTNL();
  76
  77         if (!have_ifidx && !have_wdev_id)
  78                 return ERR_PTR(-EINVAL);
  79
  80         if (have_ifidx)
  81                 ifidx = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
  82         if (have_wdev_id) {
  83                 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
  84                 wiphy_idx = wdev_id >> 32;
  85         }
  86
  87         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
  88                 struct wireless_dev *wdev;
  89
  90                 if (wiphy_net(&rdev->wiphy) != netns)
  91                         continue;
  92
  93                 if (have_wdev_id && rdev->wiphy_idx != wiphy_idx)
  94                         continue;
  95
  96                 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
  97                         if (have_ifidx && wdev->netdev &&
  98                             wdev->netdev->ifindex == ifidx) {
  99                                 result = wdev;
 100                                 break;
 101                         }
 102                         if (have_wdev_id && wdev->identifier == (u32)wdev_id) {
 103                                 result = wdev;
 104                                 break;
 105                         }
 106                 }
 107
 108                 if (result)
 109                         break;
 110         }
 111
 112         if (result)
 113                 return result;
 114         return ERR_PTR(-ENODEV);
 115 }
 116
 117 static struct cfg80211_registered_device *
 118 __cfg80211_rdev_from_attrs(struct net *netns, struct nlattr **attrs)
 119 {
 120         struct cfg80211_registered_device *rdev = NULL, *tmp;
 121         struct net_device *netdev;
 122
 123         ASSERT_RTNL();
 124
 125         if (!attrs[NL80211_ATTR_WIPHY] &&
 126             !attrs[NL80211_ATTR_IFINDEX] &&
 127             !attrs[NL80211_ATTR_WDEV])
 128                 return ERR_PTR(-EINVAL);
 129
 130         if (attrs[NL80211_ATTR_WIPHY])
 131                 rdev = cfg80211_rdev_by_wiphy_idx(
 132                                 nla_get_u32(attrs[NL80211_ATTR_WIPHY]));
 133
 134         if (attrs[NL80211_ATTR_WDEV]) {
 135                 u64 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
 136                 struct wireless_dev *wdev;
 137                 bool found = false;
 138
 139                 tmp = cfg80211_rdev_by_wiphy_idx(wdev_id >> 32);
 140                 if (tmp) {
 141                         /* make sure wdev exists */
 142                         list_for_each_entry(wdev, &tmp->wiphy.wdev_list, list) {
 143                                 if (wdev->identifier != (u32)wdev_id)
 144                                         continue;
 145                                 found = true;
 146                                 break;
 147                         }
 148
 149                         if (!found)
 150                                 tmp = NULL;
 151
 152                         if (rdev && tmp != rdev)
 153                                 return ERR_PTR(-EINVAL);
 154                         rdev = tmp;
 155                 }
 156         }
 157
 158         if (attrs[NL80211_ATTR_IFINDEX]) {
 159                 int ifindex = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
 160
 161                 netdev = __dev_get_by_index(netns, ifindex);
 162                 if (netdev) {
 163                         if (netdev->ieee80211_ptr)
 164                                 tmp = wiphy_to_rdev(
 165                                         netdev->ieee80211_ptr->wiphy);
 166                         else
 167                                 tmp = NULL;
 168
 169                         /* not wireless device -- return error */
 170                         if (!tmp)
 171                                 return ERR_PTR(-EINVAL);
 172
 173                         /* mismatch -- return error */
 174                         if (rdev && tmp != rdev)
 175                                 return ERR_PTR(-EINVAL);
 176
 177                         rdev = tmp;
 178                 }
 179         }
 180
 181         if (!rdev)
 182                 return ERR_PTR(-ENODEV);
 183
 184         if (netns != wiphy_net(&rdev->wiphy))
 185                 return ERR_PTR(-ENODEV);
 186
 187         return rdev;
 188 }
 189
 190 /*
 191  * This function returns a pointer to the driver
 192  * that the genl_info item that is passed refers to.
 193  *
 194  * The result of this can be a PTR_ERR and hence must
 195  * be checked with IS_ERR() for errors.
 196  */
 197 static struct cfg80211_registered_device *
 198 cfg80211_get_dev_from_info(struct net *netns, struct genl_info *info)
 199 {
 200         return __cfg80211_rdev_from_attrs(netns, info->attrs);
 201 }
 202
 203 static int validate_ie_attr(const struct nlattr *attr,
 204                             struct netlink_ext_ack *extack)
 205 {
 206         const u8 *pos;
 207         int len;
 208
 209         pos = nla_data(attr);
 210         len = nla_len(attr);
 211
 212         while (len) {
 213                 u8 elemlen;
 214
 215                 if (len < 2)
 216                         goto error;
 217                 len -= 2;
 218
 219                 elemlen = pos[1];
 220                 if (elemlen > len)
 221                         goto error;
 222
 223                 len -= elemlen;
 224                 pos += 2 + elemlen;
 225         }
 226
 227         return 0;
 228 error:
 229         NL_SET_ERR_MSG_ATTR(extack, attr, "malformed information elements");
 230         return -EINVAL;
 231 }
 232
 233 /* policy for the attributes */
 234 static const struct nla_policy
 235 nl80211_ftm_responder_policy[NL80211_FTM_RESP_ATTR_MAX + 1] = {
 236         [NL80211_FTM_RESP_ATTR_ENABLED] = { .type = NLA_FLAG, },
 237         [NL80211_FTM_RESP_ATTR_LCI] = { .type = NLA_BINARY,
 238                                         .len = U8_MAX },
 239         [NL80211_FTM_RESP_ATTR_CIVICLOC] = { .type = NLA_BINARY,
 240                                              .len = U8_MAX },
 241 };
 242
 243 static const struct nla_policy
 244 nl80211_pmsr_ftm_req_attr_policy[NL80211_PMSR_FTM_REQ_ATTR_MAX + 1] = {
 245         [NL80211_PMSR_FTM_REQ_ATTR_ASAP] = { .type = NLA_FLAG },
 246         [NL80211_PMSR_FTM_REQ_ATTR_PREAMBLE] = { .type = NLA_U32 },
 247         [NL80211_PMSR_FTM_REQ_ATTR_NUM_BURSTS_EXP] =
 248                 NLA_POLICY_MAX(NLA_U8, 15),
 249         [NL80211_PMSR_FTM_REQ_ATTR_BURST_PERIOD] = { .type = NLA_U16 },
 250         [NL80211_PMSR_FTM_REQ_ATTR_BURST_DURATION] =
 251                 NLA_POLICY_MAX(NLA_U8, 15),
 252         [NL80211_PMSR_FTM_REQ_ATTR_FTMS_PER_BURST] =
 253                 NLA_POLICY_MAX(NLA_U8, 15),
 254         [NL80211_PMSR_FTM_REQ_ATTR_NUM_FTMR_RETRIES] = { .type = NLA_U8 },
 255         [NL80211_PMSR_FTM_REQ_ATTR_REQUEST_LCI] = { .type = NLA_FLAG },
 256         [NL80211_PMSR_FTM_REQ_ATTR_REQUEST_CIVICLOC] = { .type = NLA_FLAG },
 257 };
 258
 259 static const struct nla_policy
 260 nl80211_pmsr_req_data_policy[NL80211_PMSR_TYPE_MAX + 1] = {
 261         [NL80211_PMSR_TYPE_FTM] =
 262                 NLA_POLICY_NESTED(NL80211_PMSR_FTM_REQ_ATTR_MAX,
 263                                   nl80211_pmsr_ftm_req_attr_policy),
 264 };
 265
 266 static const struct nla_policy
 267 nl80211_pmsr_req_attr_policy[NL80211_PMSR_REQ_ATTR_MAX + 1] = {
 268         [NL80211_PMSR_REQ_ATTR_DATA] =
 269                 NLA_POLICY_NESTED(NL80211_PMSR_TYPE_MAX,
 270                                   nl80211_pmsr_req_data_policy),
 271         [NL80211_PMSR_REQ_ATTR_GET_AP_TSF] = { .type = NLA_FLAG },
 272 };
 273
 274 static const struct nla_policy
 275 nl80211_psmr_peer_attr_policy[NL80211_PMSR_PEER_ATTR_MAX + 1] = {
 276         [NL80211_PMSR_PEER_ATTR_ADDR] = NLA_POLICY_ETH_ADDR,
 277         /*
 278          * we could specify this again to be the top-level policy,
 279          * but that would open us up to recursion problems ...
 280          */
 281         [NL80211_PMSR_PEER_ATTR_CHAN] = { .type = NLA_NESTED },
 282         [NL80211_PMSR_PEER_ATTR_REQ] =
 283                 NLA_POLICY_NESTED(NL80211_PMSR_REQ_ATTR_MAX,
 284                                   nl80211_pmsr_req_attr_policy),
 285         [NL80211_PMSR_PEER_ATTR_RESP] = { .type = NLA_REJECT },
 286 };
 287
 288 static const struct nla_policy
 289 nl80211_pmsr_attr_policy[NL80211_PMSR_ATTR_MAX + 1] = {
 290         [NL80211_PMSR_ATTR_MAX_PEERS] = { .type = NLA_REJECT },
 291         [NL80211_PMSR_ATTR_REPORT_AP_TSF] = { .type = NLA_REJECT },
 292         [NL80211_PMSR_ATTR_RANDOMIZE_MAC_ADDR] = { .type = NLA_REJECT },
 293         [NL80211_PMSR_ATTR_TYPE_CAPA] = { .type = NLA_REJECT },
 294         [NL80211_PMSR_ATTR_PEERS] =
 295                 NLA_POLICY_NESTED_ARRAY(NL80211_PMSR_PEER_ATTR_MAX,
 296                                         nl80211_psmr_peer_attr_policy),
 297 };
 298
 299 const struct nla_policy nl80211_policy[NUM_NL80211_ATTR] = {
 300         [NL80211_ATTR_WIPHY] = { .type = NLA_U32 },
 301         [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING,
 302                                       .len = 20-1 },
 303         [NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED },
 304
 305         [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 },
 306         [NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 },
 307         [NL80211_ATTR_CHANNEL_WIDTH] = { .type = NLA_U32 },
 308         [NL80211_ATTR_CENTER_FREQ1] = { .type = NLA_U32 },
 309         [NL80211_ATTR_CENTER_FREQ2] = { .type = NLA_U32 },
 310
 311         [NL80211_ATTR_WIPHY_RETRY_SHORT] = NLA_POLICY_MIN(NLA_U8, 1),
 312         [NL80211_ATTR_WIPHY_RETRY_LONG] = NLA_POLICY_MIN(NLA_U8, 1),
 313         [NL80211_ATTR_WIPHY_FRAG_THRESHOLD] = { .type = NLA_U32 },
 314         [NL80211_ATTR_WIPHY_RTS_THRESHOLD] = { .type = NLA_U32 },
 315         [NL80211_ATTR_WIPHY_COVERAGE_CLASS] = { .type = NLA_U8 },
 316         [NL80211_ATTR_WIPHY_DYN_ACK] = { .type = NLA_FLAG },
 317
 318         [NL80211_ATTR_IFTYPE] = NLA_POLICY_MAX(NLA_U32, NL80211_IFTYPE_MAX),
 319         [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 },
 320         [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 },
 321
 322         [NL80211_ATTR_MAC] = { .len = ETH_ALEN },
 323         [NL80211_ATTR_PREV_BSSID] = { .len = ETH_ALEN },
 324
 325         [NL80211_ATTR_KEY] = { .type = NLA_NESTED, },
 326         [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY,
 327                                     .len = WLAN_MAX_KEY_LEN },
 328         [NL80211_ATTR_KEY_IDX] = NLA_POLICY_MAX(NLA_U8, 5),
 329         [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 },
 330         [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG },
 331         [NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
 332         [NL80211_ATTR_KEY_TYPE] =
 333                 NLA_POLICY_MAX(NLA_U32, NUM_NL80211_KEYTYPES),
 334
 335         [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 },
 336         [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 },
 337         [NL80211_ATTR_BEACON_HEAD] = { .type = NLA_BINARY,
 338                                        .len = IEEE80211_MAX_DATA_LEN },
 339         [NL80211_ATTR_BEACON_TAIL] =
 340                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
 341                                        IEEE80211_MAX_DATA_LEN),
 342         [NL80211_ATTR_STA_AID] =
 343                 NLA_POLICY_RANGE(NLA_U16, 1, IEEE80211_MAX_AID),
 344         [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED },
 345         [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 },
 346         [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY,
 347                                                .len = NL80211_MAX_SUPP_RATES },
 348         [NL80211_ATTR_STA_PLINK_ACTION] =
 349                 NLA_POLICY_MAX(NLA_U8, NUM_NL80211_PLINK_ACTIONS - 1),
 350         [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 },
 351         [NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ },
 352         [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY,
 353                                    .len = IEEE80211_MAX_MESH_ID_LEN },
 354         [NL80211_ATTR_MPATH_NEXT_HOP] = { .type = NLA_U32 },
 355
 356         [NL80211_ATTR_REG_ALPHA2] = { .type = NLA_STRING, .len = 2 },
 357         [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED },
 358
 359         [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 },
 360         [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 },
 361         [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 },
 362         [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY,
 363                                            .len = NL80211_MAX_SUPP_RATES },
 364         [NL80211_ATTR_BSS_HT_OPMODE] = { .type = NLA_U16 },
 365
 366         [NL80211_ATTR_MESH_CONFIG] = { .type = NLA_NESTED },
 367         [NL80211_ATTR_SUPPORT_MESH_AUTH] = { .type = NLA_FLAG },
 368
 369         [NL80211_ATTR_HT_CAPABILITY] = { .len = NL80211_HT_CAPABILITY_LEN },
 370
 371         [NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 },
 372         [NL80211_ATTR_IE] = NLA_POLICY_VALIDATE_FN(NLA_BINARY,
 373                                                    validate_ie_attr,
 374                                                    IEEE80211_MAX_DATA_LEN),
 375         [NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED },
 376         [NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED },
 377
 378         [NL80211_ATTR_SSID] = { .type = NLA_BINARY,
 379                                 .len = IEEE80211_MAX_SSID_LEN },
 380         [NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 },
 381         [NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 },
 382         [NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG },
 383         [NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG },
 384         [NL80211_ATTR_USE_MFP] = NLA_POLICY_RANGE(NLA_U32,
 385                                                   NL80211_MFP_NO,
 386                                                   NL80211_MFP_OPTIONAL),
 387         [NL80211_ATTR_STA_FLAGS2] = {
 388                 .len = sizeof(struct nl80211_sta_flag_update),
 389         },
 390         [NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG },
 391         [NL80211_ATTR_CONTROL_PORT_ETHERTYPE] = { .type = NLA_U16 },
 392         [NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT] = { .type = NLA_FLAG },
 393         [NL80211_ATTR_CONTROL_PORT_OVER_NL80211] = { .type = NLA_FLAG },
 394         [NL80211_ATTR_PRIVACY] = { .type = NLA_FLAG },
 395         [NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 },
 396         [NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 },
 397         [NL80211_ATTR_PID] = { .type = NLA_U32 },
 398         [NL80211_ATTR_4ADDR] = { .type = NLA_U8 },
 399         [NL80211_ATTR_PMKID] = { .len = WLAN_PMKID_LEN },
 400         [NL80211_ATTR_DURATION] = { .type = NLA_U32 },
 401         [NL80211_ATTR_COOKIE] = { .type = NLA_U64 },
 402         [NL80211_ATTR_TX_RATES] = { .type = NLA_NESTED },
 403         [NL80211_ATTR_FRAME] = { .type = NLA_BINARY,
 404                                  .len = IEEE80211_MAX_DATA_LEN },
 405         [NL80211_ATTR_FRAME_MATCH] = { .type = NLA_BINARY, },
 406         [NL80211_ATTR_PS_STATE] = NLA_POLICY_RANGE(NLA_U32,
 407                                                    NL80211_PS_DISABLED,
 408                                                    NL80211_PS_ENABLED),
 409         [NL80211_ATTR_CQM] = { .type = NLA_NESTED, },
 410         [NL80211_ATTR_LOCAL_STATE_CHANGE] = { .type = NLA_FLAG },
 411         [NL80211_ATTR_AP_ISOLATE] = { .type = NLA_U8 },
 412         [NL80211_ATTR_WIPHY_TX_POWER_SETTING] = { .type = NLA_U32 },
 413         [NL80211_ATTR_WIPHY_TX_POWER_LEVEL] = { .type = NLA_U32 },
 414         [NL80211_ATTR_FRAME_TYPE] = { .type = NLA_U16 },
 415         [NL80211_ATTR_WIPHY_ANTENNA_TX] = { .type = NLA_U32 },
 416         [NL80211_ATTR_WIPHY_ANTENNA_RX] = { .type = NLA_U32 },
 417         [NL80211_ATTR_MCAST_RATE] = { .type = NLA_U32 },
 418         [NL80211_ATTR_OFFCHANNEL_TX_OK] = { .type = NLA_FLAG },
 419         [NL80211_ATTR_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
 420         [NL80211_ATTR_WOWLAN_TRIGGERS] = { .type = NLA_NESTED },
 421         [NL80211_ATTR_STA_PLINK_STATE] =
 422                 NLA_POLICY_MAX(NLA_U8, NUM_NL80211_PLINK_STATES - 1),
 423         [NL80211_ATTR_MESH_PEER_AID] =
 424                 NLA_POLICY_RANGE(NLA_U16, 1, IEEE80211_MAX_AID),
 425         [NL80211_ATTR_SCHED_SCAN_INTERVAL] = { .type = NLA_U32 },
 426         [NL80211_ATTR_REKEY_DATA] = { .type = NLA_NESTED },
 427         [NL80211_ATTR_SCAN_SUPP_RATES] = { .type = NLA_NESTED },
 428         [NL80211_ATTR_HIDDEN_SSID] =
 429                 NLA_POLICY_RANGE(NLA_U32,
 430                                  NL80211_HIDDEN_SSID_NOT_IN_USE,
 431                                  NL80211_HIDDEN_SSID_ZERO_CONTENTS),
 432         [NL80211_ATTR_IE_PROBE_RESP] =
 433                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
 434                                        IEEE80211_MAX_DATA_LEN),
 435         [NL80211_ATTR_IE_ASSOC_RESP] =
 436                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
 437                                        IEEE80211_MAX_DATA_LEN),
 438         [NL80211_ATTR_ROAM_SUPPORT] = { .type = NLA_FLAG },
 439         [NL80211_ATTR_SCHED_SCAN_MATCH] = { .type = NLA_NESTED },
 440         [NL80211_ATTR_TX_NO_CCK_RATE] = { .type = NLA_FLAG },
 441         [NL80211_ATTR_TDLS_ACTION] = { .type = NLA_U8 },
 442         [NL80211_ATTR_TDLS_DIALOG_TOKEN] = { .type = NLA_U8 },
 443         [NL80211_ATTR_TDLS_OPERATION] = { .type = NLA_U8 },
 444         [NL80211_ATTR_TDLS_SUPPORT] = { .type = NLA_FLAG },
 445         [NL80211_ATTR_TDLS_EXTERNAL_SETUP] = { .type = NLA_FLAG },
 446         [NL80211_ATTR_TDLS_INITIATOR] = { .type = NLA_FLAG },
 447         [NL80211_ATTR_DONT_WAIT_FOR_ACK] = { .type = NLA_FLAG },
 448         [NL80211_ATTR_PROBE_RESP] = { .type = NLA_BINARY,
 449                                       .len = IEEE80211_MAX_DATA_LEN },
 450         [NL80211_ATTR_DFS_REGION] = { .type = NLA_U8 },
 451         [NL80211_ATTR_DISABLE_HT] = { .type = NLA_FLAG },
 452         [NL80211_ATTR_HT_CAPABILITY_MASK] = {
 453                 .len = NL80211_HT_CAPABILITY_LEN
 454         },
 455         [NL80211_ATTR_NOACK_MAP] = { .type = NLA_U16 },
 456         [NL80211_ATTR_INACTIVITY_TIMEOUT] = { .type = NLA_U16 },
 457         [NL80211_ATTR_BG_SCAN_PERIOD] = { .type = NLA_U16 },
 458         [NL80211_ATTR_WDEV] = { .type = NLA_U64 },
 459         [NL80211_ATTR_USER_REG_HINT_TYPE] = { .type = NLA_U32 },
 460         [NL80211_ATTR_AUTH_DATA] = { .type = NLA_BINARY, },
 461         [NL80211_ATTR_VHT_CAPABILITY] = { .len = NL80211_VHT_CAPABILITY_LEN },
 462         [NL80211_ATTR_SCAN_FLAGS] = { .type = NLA_U32 },
 463         [NL80211_ATTR_P2P_CTWINDOW] = NLA_POLICY_MAX(NLA_U8, 127),
 464         [NL80211_ATTR_P2P_OPPPS] = NLA_POLICY_MAX(NLA_U8, 1),
 465         [NL80211_ATTR_LOCAL_MESH_POWER_MODE] =
 466                 NLA_POLICY_RANGE(NLA_U32,
 467                                  NL80211_MESH_POWER_UNKNOWN + 1,
 468                                  NL80211_MESH_POWER_MAX),
 469         [NL80211_ATTR_ACL_POLICY] = {. type = NLA_U32 },
 470         [NL80211_ATTR_MAC_ADDRS] = { .type = NLA_NESTED },
 471         [NL80211_ATTR_STA_CAPABILITY] = { .type = NLA_U16 },
 472         [NL80211_ATTR_STA_EXT_CAPABILITY] = { .type = NLA_BINARY, },
 473         [NL80211_ATTR_SPLIT_WIPHY_DUMP] = { .type = NLA_FLAG, },
 474         [NL80211_ATTR_DISABLE_VHT] = { .type = NLA_FLAG },
 475         [NL80211_ATTR_VHT_CAPABILITY_MASK] = {
 476                 .len = NL80211_VHT_CAPABILITY_LEN,
 477         },
 478         [NL80211_ATTR_MDID] = { .type = NLA_U16 },
 479         [NL80211_ATTR_IE_RIC] = { .type = NLA_BINARY,
 480                                   .len = IEEE80211_MAX_DATA_LEN },
 481         [NL80211_ATTR_PEER_AID] =
 482                 NLA_POLICY_RANGE(NLA_U16, 1, IEEE80211_MAX_AID),
 483         [NL80211_ATTR_CH_SWITCH_COUNT] = { .type = NLA_U32 },
 484         [NL80211_ATTR_CH_SWITCH_BLOCK_TX] = { .type = NLA_FLAG },
 485         [NL80211_ATTR_CSA_IES] = { .type = NLA_NESTED },
 486         [NL80211_ATTR_CSA_C_OFF_BEACON] = { .type = NLA_BINARY },
 487         [NL80211_ATTR_CSA_C_OFF_PRESP] = { .type = NLA_BINARY },
 488         [NL80211_ATTR_STA_SUPPORTED_CHANNELS] = { .type = NLA_BINARY },
 489         [NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES] = { .type = NLA_BINARY },
 490         [NL80211_ATTR_HANDLE_DFS] = { .type = NLA_FLAG },
 491         [NL80211_ATTR_OPMODE_NOTIF] = { .type = NLA_U8 },
 492         [NL80211_ATTR_VENDOR_ID] = { .type = NLA_U32 },
 493         [NL80211_ATTR_VENDOR_SUBCMD] = { .type = NLA_U32 },
 494         [NL80211_ATTR_VENDOR_DATA] = { .type = NLA_BINARY },
 495         [NL80211_ATTR_QOS_MAP] = { .type = NLA_BINARY,
 496                                    .len = IEEE80211_QOS_MAP_LEN_MAX },
 497         [NL80211_ATTR_MAC_HINT] = { .len = ETH_ALEN },
 498         [NL80211_ATTR_WIPHY_FREQ_HINT] = { .type = NLA_U32 },
 499         [NL80211_ATTR_TDLS_PEER_CAPABILITY] = { .type = NLA_U32 },
 500         [NL80211_ATTR_SOCKET_OWNER] = { .type = NLA_FLAG },
 501         [NL80211_ATTR_CSA_C_OFFSETS_TX] = { .type = NLA_BINARY },
 502         [NL80211_ATTR_USE_RRM] = { .type = NLA_FLAG },
 503         [NL80211_ATTR_TSID] = NLA_POLICY_MAX(NLA_U8, IEEE80211_NUM_TIDS - 1),
 504         [NL80211_ATTR_USER_PRIO] =
 505                 NLA_POLICY_MAX(NLA_U8, IEEE80211_NUM_UPS - 1),
 506         [NL80211_ATTR_ADMITTED_TIME] = { .type = NLA_U16 },
 507         [NL80211_ATTR_SMPS_MODE] = { .type = NLA_U8 },
 508         [NL80211_ATTR_MAC_MASK] = { .len = ETH_ALEN },
 509         [NL80211_ATTR_WIPHY_SELF_MANAGED_REG] = { .type = NLA_FLAG },
 510         [NL80211_ATTR_NETNS_FD] = { .type = NLA_U32 },
 511         [NL80211_ATTR_SCHED_SCAN_DELAY] = { .type = NLA_U32 },
 512         [NL80211_ATTR_REG_INDOOR] = { .type = NLA_FLAG },
 513         [NL80211_ATTR_PBSS] = { .type = NLA_FLAG },
 514         [NL80211_ATTR_BSS_SELECT] = { .type = NLA_NESTED },
 515         [NL80211_ATTR_STA_SUPPORT_P2P_PS] =
 516                 NLA_POLICY_MAX(NLA_U8, NUM_NL80211_P2P_PS_STATUS - 1),
 517         [NL80211_ATTR_MU_MIMO_GROUP_DATA] = {
 518                 .len = VHT_MUMIMO_GROUPS_DATA_LEN
 519         },
 520         [NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR] = { .len = ETH_ALEN },
 521         [NL80211_ATTR_NAN_MASTER_PREF] = NLA_POLICY_MIN(NLA_U8, 1),
 522         [NL80211_ATTR_BANDS] = { .type = NLA_U32 },
 523         [NL80211_ATTR_NAN_FUNC] = { .type = NLA_NESTED },
 524         [NL80211_ATTR_FILS_KEK] = { .type = NLA_BINARY,
 525                                     .len = FILS_MAX_KEK_LEN },
 526         [NL80211_ATTR_FILS_NONCES] = { .len = 2 * FILS_NONCE_LEN },
 527         [NL80211_ATTR_MULTICAST_TO_UNICAST_ENABLED] = { .type = NLA_FLAG, },
 528         [NL80211_ATTR_BSSID] = { .len = ETH_ALEN },
 529         [NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI] = { .type = NLA_S8 },
 530         [NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST] = {
 531                 .len = sizeof(struct nl80211_bss_select_rssi_adjust)
 532         },
 533         [NL80211_ATTR_TIMEOUT_REASON] = { .type = NLA_U32 },
 534         [NL80211_ATTR_FILS_ERP_USERNAME] = { .type = NLA_BINARY,
 535                                              .len = FILS_ERP_MAX_USERNAME_LEN },
 536         [NL80211_ATTR_FILS_ERP_REALM] = { .type = NLA_BINARY,
 537                                           .len = FILS_ERP_MAX_REALM_LEN },
 538         [NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] = { .type = NLA_U16 },
 539         [NL80211_ATTR_FILS_ERP_RRK] = { .type = NLA_BINARY,
 540                                         .len = FILS_ERP_MAX_RRK_LEN },
 541         [NL80211_ATTR_FILS_CACHE_ID] = { .len = 2 },
 542         [NL80211_ATTR_PMK] = { .type = NLA_BINARY, .len = PMK_MAX_LEN },
 543         [NL80211_ATTR_SCHED_SCAN_MULTI] = { .type = NLA_FLAG },
 544         [NL80211_ATTR_EXTERNAL_AUTH_SUPPORT] = { .type = NLA_FLAG },
 545
 546         [NL80211_ATTR_TXQ_LIMIT] = { .type = NLA_U32 },
 547         [NL80211_ATTR_TXQ_MEMORY_LIMIT] = { .type = NLA_U32 },
 548         [NL80211_ATTR_TXQ_QUANTUM] = { .type = NLA_U32 },
 549         [NL80211_ATTR_HE_CAPABILITY] = { .type = NLA_BINARY,
 550                                          .len = NL80211_HE_MAX_CAPABILITY_LEN },
 551
 552         [NL80211_ATTR_FTM_RESPONDER] = {
 553                 .type = NLA_NESTED,
 554                 .validation_data = nl80211_ftm_responder_policy,
 555         },
 556         [NL80211_ATTR_TIMEOUT] = NLA_POLICY_MIN(NLA_U32, 1),
 557         [NL80211_ATTR_PEER_MEASUREMENTS] =
 558                 NLA_POLICY_NESTED(NL80211_PMSR_FTM_REQ_ATTR_MAX,
 559                                   nl80211_pmsr_attr_policy),
 560 };
 561
 562 /* policy for the key attributes */
 563 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = {
 564         [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN },
 565         [NL80211_KEY_IDX] = { .type = NLA_U8 },
 566         [NL80211_KEY_CIPHER] = { .type = NLA_U32 },
 567         [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
 568         [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG },
 569         [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG },
 570         [NL80211_KEY_TYPE] = NLA_POLICY_MAX(NLA_U32, NUM_NL80211_KEYTYPES - 1),
 571         [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
 572 };
 573
 574 /* policy for the key default flags */
 575 static const struct nla_policy
 576 nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = {
 577         [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG },
 578         [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG },
 579 };
 580
 581 #ifdef CONFIG_PM
 582 /* policy for WoWLAN attributes */
 583 static const struct nla_policy
 584 nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = {
 585         [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG },
 586         [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG },
 587         [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG },
 588         [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED },
 589         [NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG },
 590         [NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG },
 591         [NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG },
 592         [NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG },
 593         [NL80211_WOWLAN_TRIG_TCP_CONNECTION] = { .type = NLA_NESTED },
 594         [NL80211_WOWLAN_TRIG_NET_DETECT] = { .type = NLA_NESTED },
 595 };
 596
 597 static const struct nla_policy
 598 nl80211_wowlan_tcp_policy[NUM_NL80211_WOWLAN_TCP] = {
 599         [NL80211_WOWLAN_TCP_SRC_IPV4] = { .type = NLA_U32 },
 600         [NL80211_WOWLAN_TCP_DST_IPV4] = { .type = NLA_U32 },
 601         [NL80211_WOWLAN_TCP_DST_MAC] = { .len = ETH_ALEN },
 602         [NL80211_WOWLAN_TCP_SRC_PORT] = { .type = NLA_U16 },
 603         [NL80211_WOWLAN_TCP_DST_PORT] = { .type = NLA_U16 },
 604         [NL80211_WOWLAN_TCP_DATA_PAYLOAD] = { .len = 1 },
 605         [NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ] = {
 606                 .len = sizeof(struct nl80211_wowlan_tcp_data_seq)
 607         },
 608         [NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN] = {
 609                 .len = sizeof(struct nl80211_wowlan_tcp_data_token)
 610         },
 611         [NL80211_WOWLAN_TCP_DATA_INTERVAL] = { .type = NLA_U32 },
 612         [NL80211_WOWLAN_TCP_WAKE_PAYLOAD] = { .len = 1 },
 613         [NL80211_WOWLAN_TCP_WAKE_MASK] = { .len = 1 },
 614 };
 615 #endif /* CONFIG_PM */
 616
 617 /* policy for coalesce rule attributes */
 618 static const struct nla_policy
 619 nl80211_coalesce_policy[NUM_NL80211_ATTR_COALESCE_RULE] = {
 620         [NL80211_ATTR_COALESCE_RULE_DELAY] = { .type = NLA_U32 },
 621         [NL80211_ATTR_COALESCE_RULE_CONDITION] =
 622                 NLA_POLICY_RANGE(NLA_U32,
 623                                  NL80211_COALESCE_CONDITION_MATCH,
 624                                  NL80211_COALESCE_CONDITION_NO_MATCH),
 625         [NL80211_ATTR_COALESCE_RULE_PKT_PATTERN] = { .type = NLA_NESTED },
 626 };
 627
 628 /* policy for GTK rekey offload attributes */
 629 static const struct nla_policy
 630 nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = {
 631         [NL80211_REKEY_DATA_KEK] = { .len = NL80211_KEK_LEN },
 632         [NL80211_REKEY_DATA_KCK] = { .len = NL80211_KCK_LEN },
 633         [NL80211_REKEY_DATA_REPLAY_CTR] = { .len = NL80211_REPLAY_CTR_LEN },
 634 };
 635
 636 static const struct nla_policy
 637 nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = {
 638         [NL80211_SCHED_SCAN_MATCH_ATTR_SSID] = { .type = NLA_BINARY,
 639                                                  .len = IEEE80211_MAX_SSID_LEN },
 640         [NL80211_SCHED_SCAN_MATCH_ATTR_BSSID] = { .len = ETH_ALEN },
 641         [NL80211_SCHED_SCAN_MATCH_ATTR_RSSI] = { .type = NLA_U32 },
 642 };
 643
 644 static const struct nla_policy
 645 nl80211_plan_policy[NL80211_SCHED_SCAN_PLAN_MAX + 1] = {
 646         [NL80211_SCHED_SCAN_PLAN_INTERVAL] = { .type = NLA_U32 },
 647         [NL80211_SCHED_SCAN_PLAN_ITERATIONS] = { .type = NLA_U32 },
 648 };
 649
 650 static const struct nla_policy
 651 nl80211_bss_select_policy[NL80211_BSS_SELECT_ATTR_MAX + 1] = {
 652         [NL80211_BSS_SELECT_ATTR_RSSI] = { .type = NLA_FLAG },
 653         [NL80211_BSS_SELECT_ATTR_BAND_PREF] = { .type = NLA_U32 },
 654         [NL80211_BSS_SELECT_ATTR_RSSI_ADJUST] = {
 655                 .len = sizeof(struct nl80211_bss_select_rssi_adjust)
 656         },
 657 };
 658
 659 /* policy for NAN function attributes */
 660 static const struct nla_policy
 661 nl80211_nan_func_policy[NL80211_NAN_FUNC_ATTR_MAX + 1] = {
 662         [NL80211_NAN_FUNC_TYPE] = { .type = NLA_U8 },
 663         [NL80211_NAN_FUNC_SERVICE_ID] = {
 664                                     .len = NL80211_NAN_FUNC_SERVICE_ID_LEN },
 665         [NL80211_NAN_FUNC_PUBLISH_TYPE] = { .type = NLA_U8 },
 666         [NL80211_NAN_FUNC_PUBLISH_BCAST] = { .type = NLA_FLAG },
 667         [NL80211_NAN_FUNC_SUBSCRIBE_ACTIVE] = { .type = NLA_FLAG },
 668         [NL80211_NAN_FUNC_FOLLOW_UP_ID] = { .type = NLA_U8 },
 669         [NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID] = { .type = NLA_U8 },
 670         [NL80211_NAN_FUNC_FOLLOW_UP_DEST] = { .len = ETH_ALEN },
 671         [NL80211_NAN_FUNC_CLOSE_RANGE] = { .type = NLA_FLAG },
 672         [NL80211_NAN_FUNC_TTL] = { .type = NLA_U32 },
 673         [NL80211_NAN_FUNC_SERVICE_INFO] = { .type = NLA_BINARY,
 674                         .len = NL80211_NAN_FUNC_SERVICE_SPEC_INFO_MAX_LEN },
 675         [NL80211_NAN_FUNC_SRF] = { .type = NLA_NESTED },
 676         [NL80211_NAN_FUNC_RX_MATCH_FILTER] = { .type = NLA_NESTED },
 677         [NL80211_NAN_FUNC_TX_MATCH_FILTER] = { .type = NLA_NESTED },
 678         [NL80211_NAN_FUNC_INSTANCE_ID] = { .type = NLA_U8 },
 679         [NL80211_NAN_FUNC_TERM_REASON] = { .type = NLA_U8 },
 680 };
 681
 682 /* policy for Service Response Filter attributes */
 683 static const struct nla_policy
 684 nl80211_nan_srf_policy[NL80211_NAN_SRF_ATTR_MAX + 1] = {
 685         [NL80211_NAN_SRF_INCLUDE] = { .type = NLA_FLAG },
 686         [NL80211_NAN_SRF_BF] = { .type = NLA_BINARY,
 687                                  .len =  NL80211_NAN_FUNC_SRF_MAX_LEN },
 688         [NL80211_NAN_SRF_BF_IDX] = { .type = NLA_U8 },
 689         [NL80211_NAN_SRF_MAC_ADDRS] = { .type = NLA_NESTED },
 690 };
 691
 692 /* policy for packet pattern attributes */
 693 static const struct nla_policy
 694 nl80211_packet_pattern_policy[MAX_NL80211_PKTPAT + 1] = {
 695         [NL80211_PKTPAT_MASK] = { .type = NLA_BINARY, },
 696         [NL80211_PKTPAT_PATTERN] = { .type = NLA_BINARY, },
 697         [NL80211_PKTPAT_OFFSET] = { .type = NLA_U32 },
 698 };
 699
 700 int nl80211_prepare_wdev_dump(struct netlink_callback *cb,
 701                               struct cfg80211_registered_device **rdev,
 702                               struct wireless_dev **wdev)
 703 {
 704         int err;
 705
 706         if (!cb->args[0]) {
 707                 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
 708                                   genl_family_attrbuf(&nl80211_fam),
 709                                   nl80211_fam.maxattr, nl80211_policy, NULL);
 710                 if (err)
 711                         return err;
 712
 713                 *wdev = __cfg80211_wdev_from_attrs(
 714                                         sock_net(cb->skb->sk),
 715                                         genl_family_attrbuf(&nl80211_fam));
 716                 if (IS_ERR(*wdev))
 717                         return PTR_ERR(*wdev);
 718                 *rdev = wiphy_to_rdev((*wdev)->wiphy);
 719                 /* 0 is the first index - add 1 to parse only once */
 720                 cb->args[0] = (*rdev)->wiphy_idx + 1;
 721                 cb->args[1] = (*wdev)->identifier;
 722         } else {
 723                 /* subtract the 1 again here */
 724                 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
 725                 struct wireless_dev *tmp;
 726
 727                 if (!wiphy)
 728                         return -ENODEV;
 729                 *rdev = wiphy_to_rdev(wiphy);
 730                 *wdev = NULL;
 731
 732                 list_for_each_entry(tmp, &(*rdev)->wiphy.wdev_list, list) {
 733                         if (tmp->identifier == cb->args[1]) {
 734                                 *wdev = tmp;
 735                                 break;
 736                         }
 737                 }
 738
 739                 if (!*wdev)
 740                         return -ENODEV;
 741         }
 742
 743         return 0;
 744 }
 745
 746 /* message building helper */
 747 void *nl80211hdr_put(struct sk_buff *skb, u32 portid, u32 seq,
 748                      int flags, u8 cmd)
 749 {
 750         /* since there is no private header just add the generic one */
 751         return genlmsg_put(skb, portid, seq, &nl80211_fam, flags, cmd);
 752 }
 753
 754 static int nl80211_msg_put_wmm_rules(struct sk_buff *msg,
 755                                      const struct ieee80211_reg_rule *rule)
 756 {
 757         int j;
 758         struct nlattr *nl_wmm_rules =
 759                 nla_nest_start(msg, NL80211_FREQUENCY_ATTR_WMM);
 760
 761         if (!nl_wmm_rules)
 762                 goto nla_put_failure;
 763
 764         for (j = 0; j < IEEE80211_NUM_ACS; j++) {
 765                 struct nlattr *nl_wmm_rule = nla_nest_start(msg, j);
 766
 767                 if (!nl_wmm_rule)
 768                         goto nla_put_failure;
 769
 770                 if (nla_put_u16(msg, NL80211_WMMR_CW_MIN,
 771                                 rule->wmm_rule.client[j].cw_min) ||
 772                     nla_put_u16(msg, NL80211_WMMR_CW_MAX,
 773                                 rule->wmm_rule.client[j].cw_max) ||
 774                     nla_put_u8(msg, NL80211_WMMR_AIFSN,
 775                                rule->wmm_rule.client[j].aifsn) ||
 776                     nla_put_u16(msg, NL80211_WMMR_TXOP,
 777                                 rule->wmm_rule.client[j].cot))
 778                         goto nla_put_failure;
 779
 780                 nla_nest_end(msg, nl_wmm_rule);
 781         }
 782         nla_nest_end(msg, nl_wmm_rules);
 783
 784         return 0;
 785
 786 nla_put_failure:
 787         return -ENOBUFS;
 788 }
 789
 790 static int nl80211_msg_put_channel(struct sk_buff *msg, struct wiphy *wiphy,
 791                                    struct ieee80211_channel *chan,
 792                                    bool large)
 793 {
 794         /* Some channels must be completely excluded from the
 795          * list to protect old user-space tools from breaking
 796          */
 797         if (!large && chan->flags &
 798             (IEEE80211_CHAN_NO_10MHZ | IEEE80211_CHAN_NO_20MHZ))
 799                 return 0;
 800
 801         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ,
 802                         chan->center_freq))
 803                 goto nla_put_failure;
 804
 805         if ((chan->flags & IEEE80211_CHAN_DISABLED) &&
 806             nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED))
 807                 goto nla_put_failure;
 808         if (chan->flags & IEEE80211_CHAN_NO_IR) {
 809                 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IR))
 810                         goto nla_put_failure;
 811                 if (nla_put_flag(msg, __NL80211_FREQUENCY_ATTR_NO_IBSS))
 812                         goto nla_put_failure;
 813         }
 814         if (chan->flags & IEEE80211_CHAN_RADAR) {
 815                 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR))
 816                         goto nla_put_failure;
 817                 if (large) {
 818                         u32 time;
 819
 820                         time = elapsed_jiffies_msecs(chan->dfs_state_entered);
 821
 822                         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_STATE,
 823                                         chan->dfs_state))
 824                                 goto nla_put_failure;
 825                         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_TIME,
 826                                         time))
 827                                 goto nla_put_failure;
 828                         if (nla_put_u32(msg,
 829                                         NL80211_FREQUENCY_ATTR_DFS_CAC_TIME,
 830                                         chan->dfs_cac_ms))
 831                                 goto nla_put_failure;
 832                 }
 833         }
 834
 835         if (large) {
 836                 if ((chan->flags & IEEE80211_CHAN_NO_HT40MINUS) &&
 837                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_MINUS))
 838                         goto nla_put_failure;
 839                 if ((chan->flags & IEEE80211_CHAN_NO_HT40PLUS) &&
 840                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_PLUS))
 841                         goto nla_put_failure;
 842                 if ((chan->flags & IEEE80211_CHAN_NO_80MHZ) &&
 843                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_80MHZ))
 844                         goto nla_put_failure;
 845                 if ((chan->flags & IEEE80211_CHAN_NO_160MHZ) &&
 846                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_160MHZ))
 847                         goto nla_put_failure;
 848                 if ((chan->flags & IEEE80211_CHAN_INDOOR_ONLY) &&
 849                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_INDOOR_ONLY))
 850                         goto nla_put_failure;
 851                 if ((chan->flags & IEEE80211_CHAN_IR_CONCURRENT) &&
 852                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_IR_CONCURRENT))
 853                         goto nla_put_failure;
 854                 if ((chan->flags & IEEE80211_CHAN_NO_20MHZ) &&
 855                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_20MHZ))
 856                         goto nla_put_failure;
 857                 if ((chan->flags & IEEE80211_CHAN_NO_10MHZ) &&
 858                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_10MHZ))
 859                         goto nla_put_failure;
 860         }
 861
 862         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
 863                         DBM_TO_MBM(chan->max_power)))
 864                 goto nla_put_failure;
 865
 866         if (large) {
 867                 const struct ieee80211_reg_rule *rule =
 868                         freq_reg_info(wiphy, MHZ_TO_KHZ(chan->center_freq));
 869
 870                 if (!IS_ERR_OR_NULL(rule) && rule->has_wmm) {
 871                         if (nl80211_msg_put_wmm_rules(msg, rule))
 872                                 goto nla_put_failure;
 873                 }
 874         }
 875
 876         return 0;
 877
 878  nla_put_failure:
 879         return -ENOBUFS;
 880 }
 881
 882 static bool nl80211_put_txq_stats(struct sk_buff *msg,
 883                                   struct cfg80211_txq_stats *txqstats,
 884                                   int attrtype)
 885 {
 886         struct nlattr *txqattr;
 887
 888 #define PUT_TXQVAL_U32(attr, memb) do {                                   \
 889         if (txqstats->filled & BIT(NL80211_TXQ_STATS_ ## attr) &&         \
 890             nla_put_u32(msg, NL80211_TXQ_STATS_ ## attr, txqstats->memb)) \
 891                 return false;                                             \
 892         } while (0)
 893
 894         txqattr = nla_nest_start(msg, attrtype);
 895         if (!txqattr)
 896                 return false;
 897
 898         PUT_TXQVAL_U32(BACKLOG_BYTES, backlog_bytes);
 899         PUT_TXQVAL_U32(BACKLOG_PACKETS, backlog_packets);
 900         PUT_TXQVAL_U32(FLOWS, flows);
 901         PUT_TXQVAL_U32(DROPS, drops);
 902         PUT_TXQVAL_U32(ECN_MARKS, ecn_marks);
 903         PUT_TXQVAL_U32(OVERLIMIT, overlimit);
 904         PUT_TXQVAL_U32(OVERMEMORY, overmemory);
 905         PUT_TXQVAL_U32(COLLISIONS, collisions);
 906         PUT_TXQVAL_U32(TX_BYTES, tx_bytes);
 907         PUT_TXQVAL_U32(TX_PACKETS, tx_packets);
 908         PUT_TXQVAL_U32(MAX_FLOWS, max_flows);
 909         nla_nest_end(msg, txqattr);
 910
 911 #undef PUT_TXQVAL_U32
 912         return true;
 913 }
 914
 915 /* netlink command implementations */
 916
 917 struct key_parse {
 918         struct key_params p;
 919         int idx;
 920         int type;
 921         bool def, defmgmt;
 922         bool def_uni, def_multi;
 923 };
 924
 925 static int nl80211_parse_key_new(struct genl_info *info, struct nlattr *key,
 926                                  struct key_parse *k)
 927 {
 928         struct nlattr *tb[NL80211_KEY_MAX + 1];
 929         int err = nla_parse_nested(tb, NL80211_KEY_MAX, key,
 930                                    nl80211_key_policy, info->extack);
 931         if (err)
 932                 return err;
 933
 934         k->def = !!tb[NL80211_KEY_DEFAULT];
 935         k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];
 936
 937         if (k->def) {
 938                 k->def_uni = true;
 939                 k->def_multi = true;
 940         }
 941         if (k->defmgmt)
 942                 k->def_multi = true;
 943
 944         if (tb[NL80211_KEY_IDX])
 945                 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);
 946
 947         if (tb[NL80211_KEY_DATA]) {
 948                 k->p.key = nla_data(tb[NL80211_KEY_DATA]);
 949                 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
 950         }
 951
 952         if (tb[NL80211_KEY_SEQ]) {
 953                 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
 954                 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
 955         }
 956
 957         if (tb[NL80211_KEY_CIPHER])
 958                 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);
 959
 960         if (tb[NL80211_KEY_TYPE])
 961                 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]);
 962
 963         if (tb[NL80211_KEY_DEFAULT_TYPES]) {
 964                 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
 965
 966                 err = nla_parse_nested(kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
 967                                        tb[NL80211_KEY_DEFAULT_TYPES],
 968                                        nl80211_key_default_policy,
 969                                        info->extack);
 970                 if (err)
 971                         return err;
 972
 973                 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
 974                 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
 975         }
 976
 977         return 0;
 978 }
 979
 980 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k)
 981 {
 982         if (info->attrs[NL80211_ATTR_KEY_DATA]) {
 983                 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
 984                 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
 985         }
 986
 987         if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
 988                 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
 989                 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
 990         }
 991
 992         if (info->attrs[NL80211_ATTR_KEY_IDX])
 993                 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
 994
 995         if (info->attrs[NL80211_ATTR_KEY_CIPHER])
 996                 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
 997
 998         k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
 999         k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT];
1000
1001         if (k->def) {
1002                 k->def_uni = true;
1003                 k->def_multi = true;
1004         }
1005         if (k->defmgmt)
1006                 k->def_multi = true;
1007
1008         if (info->attrs[NL80211_ATTR_KEY_TYPE])
1009                 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
1010
1011         if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) {
1012                 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
1013                 int err = nla_parse_nested(kdt,
1014                                            NUM_NL80211_KEY_DEFAULT_TYPES - 1,
1015                                            info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES],
1016                                            nl80211_key_default_policy,
1017                                            info->extack);
1018                 if (err)
1019                         return err;
1020
1021                 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
1022                 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
1023         }
1024
1025         return 0;
1026 }
1027
1028 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
1029 {
1030         int err;
1031
1032         memset(k, 0, sizeof(*k));
1033         k->idx = -1;
1034         k->type = -1;
1035
1036         if (info->attrs[NL80211_ATTR_KEY])
1037                 err = nl80211_parse_key_new(info, info->attrs[NL80211_ATTR_KEY], k);
1038         else
1039                 err = nl80211_parse_key_old(info, k);
1040
1041         if (err)
1042                 return err;
1043
1044         if (k->def && k->defmgmt) {
1045                 GENL_SET_ERR_MSG(info, "key with def && defmgmt is invalid");
1046                 return -EINVAL;
1047         }
1048
1049         if (k->defmgmt) {
1050                 if (k->def_uni || !k->def_multi) {
1051                         GENL_SET_ERR_MSG(info, "defmgmt key must be mcast");
1052                         return -EINVAL;
1053                 }
1054         }
1055
1056         if (k->idx != -1) {
1057                 if (k->defmgmt) {
1058                         if (k->idx < 4 || k->idx > 5) {
1059                                 GENL_SET_ERR_MSG(info,
1060                                                  "defmgmt key idx not 4 or 5");
1061                                 return -EINVAL;
1062                         }
1063                 } else if (k->def) {
1064                         if (k->idx < 0 || k->idx > 3) {
1065                                 GENL_SET_ERR_MSG(info, "def key idx not 0-3");
1066                                 return -EINVAL;
1067                         }
1068                 } else {
1069                         if (k->idx < 0 || k->idx > 5) {
1070                                 GENL_SET_ERR_MSG(info, "key idx not 0-5");
1071                                 return -EINVAL;
1072                         }
1073                 }
1074         }
1075
1076         return 0;
1077 }
1078
1079 static struct cfg80211_cached_keys *
1080 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
1081                        struct genl_info *info, bool *no_ht)
1082 {
1083         struct nlattr *keys = info->attrs[NL80211_ATTR_KEYS];
1084         struct key_parse parse;
1085         struct nlattr *key;
1086         struct cfg80211_cached_keys *result;
1087         int rem, err, def = 0;
1088         bool have_key = false;
1089
1090         nla_for_each_nested(key, keys, rem) {
1091                 have_key = true;
1092                 break;
1093         }
1094
1095         if (!have_key)
1096                 return NULL;
1097
1098         result = kzalloc(sizeof(*result), GFP_KERNEL);
1099         if (!result)
1100                 return ERR_PTR(-ENOMEM);
1101
1102         result->def = -1;
1103
1104         nla_for_each_nested(key, keys, rem) {
1105                 memset(&parse, 0, sizeof(parse));
1106                 parse.idx = -1;
1107
1108                 err = nl80211_parse_key_new(info, key, &parse);
1109                 if (err)
1110                         goto error;
1111                 err = -EINVAL;
1112                 if (!parse.p.key)
1113                         goto error;
1114                 if (parse.idx < 0 || parse.idx > 3) {
1115                         GENL_SET_ERR_MSG(info, "key index out of range [0-3]");
1116                         goto error;
1117                 }
1118                 if (parse.def) {
1119                         if (def) {
1120                                 GENL_SET_ERR_MSG(info,
1121                                                  "only one key can be default");
1122                                 goto error;
1123                         }
1124                         def = 1;
1125                         result->def = parse.idx;
1126                         if (!parse.def_uni || !parse.def_multi)
1127                                 goto error;
1128                 } else if (parse.defmgmt)
1129                         goto error;
1130                 err = cfg80211_validate_key_settings(rdev, &parse.p,
1131                                                      parse.idx, false, NULL);
1132                 if (err)
1133                         goto error;
1134                 if (parse.p.cipher != WLAN_CIPHER_SUITE_WEP40 &&
1135                     parse.p.cipher != WLAN_CIPHER_SUITE_WEP104) {
1136                         GENL_SET_ERR_MSG(info, "connect key must be WEP");
1137                         err = -EINVAL;
1138                         goto error;
1139                 }
1140                 result->params[parse.idx].cipher = parse.p.cipher;
1141                 result->params[parse.idx].key_len = parse.p.key_len;
1142                 result->params[parse.idx].key = result->data[parse.idx];
1143                 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
1144
1145                 /* must be WEP key if we got here */
1146                 if (no_ht)
1147                         *no_ht = true;
1148         }
1149
1150         if (result->def < 0) {
1151                 err = -EINVAL;
1152                 GENL_SET_ERR_MSG(info, "need a default/TX key");
1153                 goto error;
1154         }
1155
1156         return result;
1157  error:
1158         kfree(result);
1159         return ERR_PTR(err);
1160 }
1161
1162 static int nl80211_key_allowed(struct wireless_dev *wdev)
1163 {
1164         ASSERT_WDEV_LOCK(wdev);
1165
1166         switch (wdev->iftype) {
1167         case NL80211_IFTYPE_AP:
1168         case NL80211_IFTYPE_AP_VLAN:
1169         case NL80211_IFTYPE_P2P_GO:
1170         case NL80211_IFTYPE_MESH_POINT:
1171                 break;
1172         case NL80211_IFTYPE_ADHOC:
1173         case NL80211_IFTYPE_STATION:
1174         case NL80211_IFTYPE_P2P_CLIENT:
1175                 if (!wdev->current_bss)
1176                         return -ENOLINK;
1177                 break;
1178         case NL80211_IFTYPE_UNSPECIFIED:
1179         case NL80211_IFTYPE_OCB:
1180         case NL80211_IFTYPE_MONITOR:
1181         case NL80211_IFTYPE_NAN:
1182         case NL80211_IFTYPE_P2P_DEVICE:
1183         case NL80211_IFTYPE_WDS:
1184         case NUM_NL80211_IFTYPES:
1185                 return -EINVAL;
1186         }
1187
1188         return 0;
1189 }
1190
1191 static struct ieee80211_channel *nl80211_get_valid_chan(struct wiphy *wiphy,
1192                                                         struct nlattr *tb)
1193 {
1194         struct ieee80211_channel *chan;
1195
1196         if (tb == NULL)
1197                 return NULL;
1198         chan = ieee80211_get_channel(wiphy, nla_get_u32(tb));
1199         if (!chan || chan->flags & IEEE80211_CHAN_DISABLED)
1200                 return NULL;
1201         return chan;
1202 }
1203
1204 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes)
1205 {
1206         struct nlattr *nl_modes = nla_nest_start(msg, attr);
1207         int i;
1208
1209         if (!nl_modes)
1210                 goto nla_put_failure;
1211
1212         i = 0;
1213         while (ifmodes) {
1214                 if ((ifmodes & 1) && nla_put_flag(msg, i))
1215                         goto nla_put_failure;
1216                 ifmodes >>= 1;
1217                 i++;
1218         }
1219
1220         nla_nest_end(msg, nl_modes);
1221         return 0;
1222
1223 nla_put_failure:
1224         return -ENOBUFS;
1225 }
1226
1227 static int nl80211_put_iface_combinations(struct wiphy *wiphy,
1228                                           struct sk_buff *msg,
1229                                           bool large)
1230 {
1231         struct nlattr *nl_combis;
1232         int i, j;
1233
1234         nl_combis = nla_nest_start(msg,
1235                                 NL80211_ATTR_INTERFACE_COMBINATIONS);
1236         if (!nl_combis)
1237                 goto nla_put_failure;
1238
1239         for (i = 0; i < wiphy->n_iface_combinations; i++) {
1240                 const struct ieee80211_iface_combination *c;
1241                 struct nlattr *nl_combi, *nl_limits;
1242
1243                 c = &wiphy->iface_combinations[i];
1244
1245                 nl_combi = nla_nest_start(msg, i + 1);
1246                 if (!nl_combi)
1247                         goto nla_put_failure;
1248
1249                 nl_limits = nla_nest_start(msg, NL80211_IFACE_COMB_LIMITS);
1250                 if (!nl_limits)
1251                         goto nla_put_failure;
1252
1253                 for (j = 0; j < c->n_limits; j++) {
1254                         struct nlattr *nl_limit;
1255
1256                         nl_limit = nla_nest_start(msg, j + 1);
1257                         if (!nl_limit)
1258                                 goto nla_put_failure;
1259                         if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX,
1260                                         c->limits[j].max))
1261                                 goto nla_put_failure;
1262                         if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES,
1263                                                 c->limits[j].types))
1264                                 goto nla_put_failure;
1265                         nla_nest_end(msg, nl_limit);
1266                 }
1267
1268                 nla_nest_end(msg, nl_limits);
1269
1270                 if (c->beacon_int_infra_match &&
1271                     nla_put_flag(msg, NL80211_IFACE_COMB_STA_AP_BI_MATCH))
1272                         goto nla_put_failure;
1273                 if (nla_put_u32(msg, NL80211_IFACE_COMB_NUM_CHANNELS,
1274                                 c->num_different_channels) ||
1275                     nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM,
1276                                 c->max_interfaces))
1277                         goto nla_put_failure;
1278                 if (large &&
1279                     (nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS,
1280                                 c->radar_detect_widths) ||
1281                      nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_REGIONS,
1282                                 c->radar_detect_regions)))
1283                         goto nla_put_failure;
1284                 if (c->beacon_int_min_gcd &&
1285                     nla_put_u32(msg, NL80211_IFACE_COMB_BI_MIN_GCD,
1286                                 c->beacon_int_min_gcd))
1287                         goto nla_put_failure;
1288
1289                 nla_nest_end(msg, nl_combi);
1290         }
1291
1292         nla_nest_end(msg, nl_combis);
1293
1294         return 0;
1295 nla_put_failure:
1296         return -ENOBUFS;
1297 }
1298
1299 #ifdef CONFIG_PM
1300 static int nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device *rdev,
1301                                         struct sk_buff *msg)
1302 {
1303         const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan->tcp;
1304         struct nlattr *nl_tcp;
1305
1306         if (!tcp)
1307                 return 0;
1308
1309         nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
1310         if (!nl_tcp)
1311                 return -ENOBUFS;
1312
1313         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1314                         tcp->data_payload_max))
1315                 return -ENOBUFS;
1316
1317         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1318                         tcp->data_payload_max))
1319                 return -ENOBUFS;
1320
1321         if (tcp->seq && nla_put_flag(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ))
1322                 return -ENOBUFS;
1323
1324         if (tcp->tok && nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
1325                                 sizeof(*tcp->tok), tcp->tok))
1326                 return -ENOBUFS;
1327
1328         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
1329                         tcp->data_interval_max))
1330                 return -ENOBUFS;
1331
1332         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
1333                         tcp->wake_payload_max))
1334                 return -ENOBUFS;
1335
1336         nla_nest_end(msg, nl_tcp);
1337         return 0;
1338 }
1339
1340 static int nl80211_send_wowlan(struct sk_buff *msg,
1341                                struct cfg80211_registered_device *rdev,
1342                                bool large)
1343 {
1344         struct nlattr *nl_wowlan;
1345
1346         if (!rdev->wiphy.wowlan)
1347                 return 0;
1348
1349         nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED);
1350         if (!nl_wowlan)
1351                 return -ENOBUFS;
1352
1353         if (((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_ANY) &&
1354              nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
1355             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_DISCONNECT) &&
1356              nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
1357             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT) &&
1358              nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
1359             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) &&
1360              nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) ||
1361             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) &&
1362              nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
1363             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) &&
1364              nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
1365             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) &&
1366              nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
1367             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE) &&
1368              nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
1369                 return -ENOBUFS;
1370
1371         if (rdev->wiphy.wowlan->n_patterns) {
1372                 struct nl80211_pattern_support pat = {
1373                         .max_patterns = rdev->wiphy.wowlan->n_patterns,
1374                         .min_pattern_len = rdev->wiphy.wowlan->pattern_min_len,
1375                         .max_pattern_len = rdev->wiphy.wowlan->pattern_max_len,
1376                         .max_pkt_offset = rdev->wiphy.wowlan->max_pkt_offset,
1377                 };
1378
1379                 if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
1380                             sizeof(pat), &pat))
1381                         return -ENOBUFS;
1382         }
1383
1384         if ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_NET_DETECT) &&
1385             nla_put_u32(msg, NL80211_WOWLAN_TRIG_NET_DETECT,
1386                         rdev->wiphy.wowlan->max_nd_match_sets))
1387                 return -ENOBUFS;
1388
1389         if (large && nl80211_send_wowlan_tcp_caps(rdev, msg))
1390                 return -ENOBUFS;
1391
1392         nla_nest_end(msg, nl_wowlan);
1393
1394         return 0;
1395 }
1396 #endif
1397
1398 static int nl80211_send_coalesce(struct sk_buff *msg,
1399                                  struct cfg80211_registered_device *rdev)
1400 {
1401         struct nl80211_coalesce_rule_support rule;
1402
1403         if (!rdev->wiphy.coalesce)
1404                 return 0;
1405
1406         rule.max_rules = rdev->wiphy.coalesce->n_rules;
1407         rule.max_delay = rdev->wiphy.coalesce->max_delay;
1408         rule.pat.max_patterns = rdev->wiphy.coalesce->n_patterns;
1409         rule.pat.min_pattern_len = rdev->wiphy.coalesce->pattern_min_len;
1410         rule.pat.max_pattern_len = rdev->wiphy.coalesce->pattern_max_len;
1411         rule.pat.max_pkt_offset = rdev->wiphy.coalesce->max_pkt_offset;
1412
1413         if (nla_put(msg, NL80211_ATTR_COALESCE_RULE, sizeof(rule), &rule))
1414                 return -ENOBUFS;
1415
1416         return 0;
1417 }
1418
1419 static int
1420 nl80211_send_iftype_data(struct sk_buff *msg,
1421                          const struct ieee80211_sband_iftype_data *iftdata)
1422 {
1423         const struct ieee80211_sta_he_cap *he_cap = &iftdata->he_cap;
1424
1425         if (nl80211_put_iftypes(msg, NL80211_BAND_IFTYPE_ATTR_IFTYPES,
1426                                 iftdata->types_mask))
1427                 return -ENOBUFS;
1428
1429         if (he_cap->has_he) {
1430                 if (nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_MAC,
1431                             sizeof(he_cap->he_cap_elem.mac_cap_info),
1432                             he_cap->he_cap_elem.mac_cap_info) ||
1433                     nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_PHY,
1434                             sizeof(he_cap->he_cap_elem.phy_cap_info),
1435                             he_cap->he_cap_elem.phy_cap_info) ||
1436                     nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_MCS_SET,
1437                             sizeof(he_cap->he_mcs_nss_supp),
1438                             &he_cap->he_mcs_nss_supp) ||
1439                     nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_PPE,
1440                             sizeof(he_cap->ppe_thres), he_cap->ppe_thres))
1441                         return -ENOBUFS;
1442         }
1443
1444         return 0;
1445 }
1446
1447 static int nl80211_send_band_rateinfo(struct sk_buff *msg,
1448                                       struct ieee80211_supported_band *sband)
1449 {
1450         struct nlattr *nl_rates, *nl_rate;
1451         struct ieee80211_rate *rate;
1452         int i;
1453
1454         /* add HT info */
1455         if (sband->ht_cap.ht_supported &&
1456             (nla_put(msg, NL80211_BAND_ATTR_HT_MCS_SET,
1457                      sizeof(sband->ht_cap.mcs),
1458                      &sband->ht_cap.mcs) ||
1459              nla_put_u16(msg, NL80211_BAND_ATTR_HT_CAPA,
1460                          sband->ht_cap.cap) ||
1461              nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
1462                         sband->ht_cap.ampdu_factor) ||
1463              nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
1464                         sband->ht_cap.ampdu_density)))
1465                 return -ENOBUFS;
1466
1467         /* add VHT info */
1468         if (sband->vht_cap.vht_supported &&
1469             (nla_put(msg, NL80211_BAND_ATTR_VHT_MCS_SET,
1470                      sizeof(sband->vht_cap.vht_mcs),
1471                      &sband->vht_cap.vht_mcs) ||
1472              nla_put_u32(msg, NL80211_BAND_ATTR_VHT_CAPA,
1473                          sband->vht_cap.cap)))
1474                 return -ENOBUFS;
1475
1476         if (sband->n_iftype_data) {
1477                 struct nlattr *nl_iftype_data =
1478                         nla_nest_start(msg, NL80211_BAND_ATTR_IFTYPE_DATA);
1479                 int err;
1480
1481                 if (!nl_iftype_data)
1482                         return -ENOBUFS;
1483
1484                 for (i = 0; i < sband->n_iftype_data; i++) {
1485                         struct nlattr *iftdata;
1486
1487                         iftdata = nla_nest_start(msg, i + 1);
1488                         if (!iftdata)
1489                                 return -ENOBUFS;
1490
1491                         err = nl80211_send_iftype_data(msg,
1492                                                        &sband->iftype_data[i]);
1493                         if (err)
1494                                 return err;
1495
1496                         nla_nest_end(msg, iftdata);
1497                 }
1498
1499                 nla_nest_end(msg, nl_iftype_data);
1500         }
1501
1502         /* add bitrates */
1503         nl_rates = nla_nest_start(msg, NL80211_BAND_ATTR_RATES);
1504         if (!nl_rates)
1505                 return -ENOBUFS;
1506
1507         for (i = 0; i < sband->n_bitrates; i++) {
1508                 nl_rate = nla_nest_start(msg, i);
1509                 if (!nl_rate)
1510                         return -ENOBUFS;
1511
1512                 rate = &sband->bitrates[i];
1513                 if (nla_put_u32(msg, NL80211_BITRATE_ATTR_RATE,
1514                                 rate->bitrate))
1515                         return -ENOBUFS;
1516                 if ((rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) &&
1517                     nla_put_flag(msg,
1518                                  NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE))
1519                         return -ENOBUFS;
1520
1521                 nla_nest_end(msg, nl_rate);
1522         }
1523
1524         nla_nest_end(msg, nl_rates);
1525
1526         return 0;
1527 }
1528
1529 static int
1530 nl80211_send_mgmt_stypes(struct sk_buff *msg,
1531                          const struct ieee80211_txrx_stypes *mgmt_stypes)
1532 {
1533         u16 stypes;
1534         struct nlattr *nl_ftypes, *nl_ifs;
1535         enum nl80211_iftype ift;
1536         int i;
1537
1538         if (!mgmt_stypes)
1539                 return 0;
1540
1541         nl_ifs = nla_nest_start(msg, NL80211_ATTR_TX_FRAME_TYPES);
1542         if (!nl_ifs)
1543                 return -ENOBUFS;
1544
1545         for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1546                 nl_ftypes = nla_nest_start(msg, ift);
1547                 if (!nl_ftypes)
1548                         return -ENOBUFS;
1549                 i = 0;
1550                 stypes = mgmt_stypes[ift].tx;
1551                 while (stypes) {
1552                         if ((stypes & 1) &&
1553                             nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1554                                         (i << 4) | IEEE80211_FTYPE_MGMT))
1555                                 return -ENOBUFS;
1556                         stypes >>= 1;
1557                         i++;
1558                 }
1559                 nla_nest_end(msg, nl_ftypes);
1560         }
1561
1562         nla_nest_end(msg, nl_ifs);
1563
1564         nl_ifs = nla_nest_start(msg, NL80211_ATTR_RX_FRAME_TYPES);
1565         if (!nl_ifs)
1566                 return -ENOBUFS;
1567
1568         for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1569                 nl_ftypes = nla_nest_start(msg, ift);
1570                 if (!nl_ftypes)
1571                         return -ENOBUFS;
1572                 i = 0;
1573                 stypes = mgmt_stypes[ift].rx;
1574                 while (stypes) {
1575                         if ((stypes & 1) &&
1576                             nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1577                                         (i << 4) | IEEE80211_FTYPE_MGMT))
1578                                 return -ENOBUFS;
1579                         stypes >>= 1;
1580                         i++;
1581                 }
1582                 nla_nest_end(msg, nl_ftypes);
1583         }
1584         nla_nest_end(msg, nl_ifs);
1585
1586         return 0;
1587 }
1588
1589 #define CMD(op, n)                                                      \
1590          do {                                                           \
1591                 if (rdev->ops->op) {                                    \
1592                         i++;                                            \
1593                         if (nla_put_u32(msg, i, NL80211_CMD_ ## n))     \
1594                                 goto nla_put_failure;                   \
1595                 }                                                       \
1596         } while (0)
1597
1598 static int nl80211_add_commands_unsplit(struct cfg80211_registered_device *rdev,
1599                                         struct sk_buff *msg)
1600 {
1601         int i = 0;
1602
1603         /*
1604          * do *NOT* add anything into this function, new things need to be
1605          * advertised only to new versions of userspace that can deal with
1606          * the split (and they can't possibly care about new features...
1607          */
1608         CMD(add_virtual_intf, NEW_INTERFACE);
1609         CMD(change_virtual_intf, SET_INTERFACE);
1610         CMD(add_key, NEW_KEY);
1611         CMD(start_ap, START_AP);
1612         CMD(add_station, NEW_STATION);
1613         CMD(add_mpath, NEW_MPATH);
1614         CMD(update_mesh_config, SET_MESH_CONFIG);
1615         CMD(change_bss, SET_BSS);
1616         CMD(auth, AUTHENTICATE);
1617         CMD(assoc, ASSOCIATE);
1618         CMD(deauth, DEAUTHENTICATE);
1619         CMD(disassoc, DISASSOCIATE);
1620         CMD(join_ibss, JOIN_IBSS);
1621         CMD(join_mesh, JOIN_MESH);
1622         CMD(set_pmksa, SET_PMKSA);
1623         CMD(del_pmksa, DEL_PMKSA);
1624         CMD(flush_pmksa, FLUSH_PMKSA);
1625         if (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)
1626                 CMD(remain_on_channel, REMAIN_ON_CHANNEL);
1627         CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
1628         CMD(mgmt_tx, FRAME);
1629         CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL);
1630         if (rdev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
1631                 i++;
1632                 if (nla_put_u32(msg, i, NL80211_CMD_SET_WIPHY_NETNS))
1633                         goto nla_put_failure;
1634         }
1635         if (rdev->ops->set_monitor_channel || rdev->ops->start_ap ||
1636             rdev->ops->join_mesh) {
1637                 i++;
1638                 if (nla_put_u32(msg, i, NL80211_CMD_SET_CHANNEL))
1639                         goto nla_put_failure;
1640         }
1641         CMD(set_wds_peer, SET_WDS_PEER);
1642         if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) {
1643                 CMD(tdls_mgmt, TDLS_MGMT);
1644                 CMD(tdls_oper, TDLS_OPER);
1645         }
1646         if (rdev->wiphy.max_sched_scan_reqs)
1647                 CMD(sched_scan_start, START_SCHED_SCAN);
1648         CMD(probe_client, PROBE_CLIENT);
1649         CMD(set_noack_map, SET_NOACK_MAP);
1650         if (rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) {
1651                 i++;
1652                 if (nla_put_u32(msg, i, NL80211_CMD_REGISTER_BEACONS))
1653                         goto nla_put_failure;
1654         }
1655         CMD(start_p2p_device, START_P2P_DEVICE);
1656         CMD(set_mcast_rate, SET_MCAST_RATE);
1657 #ifdef CONFIG_NL80211_TESTMODE
1658         CMD(testmode_cmd, TESTMODE);
1659 #endif
1660
1661         if (rdev->ops->connect || rdev->ops->auth) {
1662                 i++;
1663                 if (nla_put_u32(msg, i, NL80211_CMD_CONNECT))
1664                         goto nla_put_failure;
1665         }
1666
1667         if (rdev->ops->disconnect || rdev->ops->deauth) {
1668                 i++;
1669                 if (nla_put_u32(msg, i, NL80211_CMD_DISCONNECT))
1670                         goto nla_put_failure;
1671         }
1672
1673         return i;
1674  nla_put_failure:
1675         return -ENOBUFS;
1676 }
1677
1678 static int
1679 nl80211_send_pmsr_ftm_capa(const struct cfg80211_pmsr_capabilities *cap,
1680                            struct sk_buff *msg)
1681 {
1682         struct nlattr *ftm;
1683
1684         if (!cap->ftm.supported)
1685                 return 0;
1686
1687         ftm = nla_nest_start(msg, NL80211_PMSR_TYPE_FTM);
1688         if (!ftm)
1689                 return -ENOBUFS;
1690
1691         if (cap->ftm.asap && nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_ASAP))
1692                 return -ENOBUFS;
1693         if (cap->ftm.non_asap &&
1694             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_NON_ASAP))
1695                 return -ENOBUFS;
1696         if (cap->ftm.request_lci &&
1697             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_REQ_LCI))
1698                 return -ENOBUFS;
1699         if (cap->ftm.request_civicloc &&
1700             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_REQ_CIVICLOC))
1701                 return -ENOBUFS;
1702         if (nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_PREAMBLES,
1703                         cap->ftm.preambles))
1704                 return -ENOBUFS;
1705         if (nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_BANDWIDTHS,
1706                         cap->ftm.bandwidths))
1707                 return -ENOBUFS;
1708         if (cap->ftm.max_bursts_exponent >= 0 &&
1709             nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_MAX_BURSTS_EXPONENT,
1710                         cap->ftm.max_bursts_exponent))
1711                 return -ENOBUFS;
1712         if (cap->ftm.max_ftms_per_burst &&
1713             nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_MAX_FTMS_PER_BURST,
1714                         cap->ftm.max_ftms_per_burst))
1715                 return -ENOBUFS;
1716
1717         nla_nest_end(msg, ftm);
1718         return 0;
1719 }
1720
1721 static int nl80211_send_pmsr_capa(struct cfg80211_registered_device *rdev,
1722                                   struct sk_buff *msg)
1723 {
1724         const struct cfg80211_pmsr_capabilities *cap = rdev->wiphy.pmsr_capa;
1725         struct nlattr *pmsr, *caps;
1726
1727         if (!cap)
1728                 return 0;
1729
1730         /*
1731          * we don't need to clean up anything here since the caller
1732          * will genlmsg_cancel() if we fail
1733          */
1734
1735         pmsr = nla_nest_start(msg, NL80211_ATTR_PEER_MEASUREMENTS);
1736         if (!pmsr)
1737                 return -ENOBUFS;
1738
1739         if (nla_put_u32(msg, NL80211_PMSR_ATTR_MAX_PEERS, cap->max_peers))
1740                 return -ENOBUFS;
1741
1742         if (cap->report_ap_tsf &&
1743             nla_put_flag(msg, NL80211_PMSR_ATTR_REPORT_AP_TSF))
1744                 return -ENOBUFS;
1745
1746         if (cap->randomize_mac_addr &&
1747             nla_put_flag(msg, NL80211_PMSR_ATTR_RANDOMIZE_MAC_ADDR))
1748                 return -ENOBUFS;
1749
1750         caps = nla_nest_start(msg, NL80211_PMSR_ATTR_TYPE_CAPA);
1751         if (!caps)
1752                 return -ENOBUFS;
1753
1754         if (nl80211_send_pmsr_ftm_capa(cap, msg))
1755                 return -ENOBUFS;
1756
1757         nla_nest_end(msg, caps);
1758         nla_nest_end(msg, pmsr);
1759
1760         return 0;
1761 }
1762
1763 struct nl80211_dump_wiphy_state {
1764         s64 filter_wiphy;
1765         long start;
1766         long split_start, band_start, chan_start, capa_start;
1767         bool split;
1768 };
1769
1770 static int nl80211_send_wiphy(struct cfg80211_registered_device *rdev,
1771                               enum nl80211_commands cmd,
1772                               struct sk_buff *msg, u32 portid, u32 seq,
1773                               int flags, struct nl80211_dump_wiphy_state *state)
1774 {
1775         void *hdr;
1776         struct nlattr *nl_bands, *nl_band;
1777         struct nlattr *nl_freqs, *nl_freq;
1778         struct nlattr *nl_cmds;
1779         enum nl80211_band band;
1780         struct ieee80211_channel *chan;
1781         int i;
1782         const struct ieee80211_txrx_stypes *mgmt_stypes =
1783                                 rdev->wiphy.mgmt_stypes;
1784         u32 features;
1785
1786         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
1787         if (!hdr)
1788                 return -ENOBUFS;
1789
1790         if (WARN_ON(!state))
1791                 return -EINVAL;
1792
1793         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
1794             nla_put_string(msg, NL80211_ATTR_WIPHY_NAME,
1795                            wiphy_name(&rdev->wiphy)) ||
1796             nla_put_u32(msg, NL80211_ATTR_GENERATION,
1797                         cfg80211_rdev_list_generation))
1798                 goto nla_put_failure;
1799
1800         if (cmd != NL80211_CMD_NEW_WIPHY)
1801                 goto finish;
1802
1803         switch (state->split_start) {
1804         case 0:
1805                 if (nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
1806                                rdev->wiphy.retry_short) ||
1807                     nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
1808                                rdev->wiphy.retry_long) ||
1809                     nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
1810                                 rdev->wiphy.frag_threshold) ||
1811                     nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
1812                                 rdev->wiphy.rts_threshold) ||
1813                     nla_put_u8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
1814                                rdev->wiphy.coverage_class) ||
1815                     nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
1816                                rdev->wiphy.max_scan_ssids) ||
1817                     nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS,
1818                                rdev->wiphy.max_sched_scan_ssids) ||
1819                     nla_put_u16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
1820                                 rdev->wiphy.max_scan_ie_len) ||
1821                     nla_put_u16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN,
1822                                 rdev->wiphy.max_sched_scan_ie_len) ||
1823                     nla_put_u8(msg, NL80211_ATTR_MAX_MATCH_SETS,
1824                                rdev->wiphy.max_match_sets) ||
1825                     nla_put_u32(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_PLANS,
1826                                 rdev->wiphy.max_sched_scan_plans) ||
1827                     nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_INTERVAL,
1828                                 rdev->wiphy.max_sched_scan_plan_interval) ||
1829                     nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_ITERATIONS,
1830                                 rdev->wiphy.max_sched_scan_plan_iterations))
1831                         goto nla_put_failure;
1832
1833                 if ((rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) &&
1834                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_IBSS_RSN))
1835                         goto nla_put_failure;
1836                 if ((rdev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) &&
1837                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_MESH_AUTH))
1838                         goto nla_put_failure;
1839                 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
1840                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_AP_UAPSD))
1841                         goto nla_put_failure;
1842                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) &&
1843                     nla_put_flag(msg, NL80211_ATTR_ROAM_SUPPORT))
1844                         goto nla_put_failure;
1845                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) &&
1846                     nla_put_flag(msg, NL80211_ATTR_TDLS_SUPPORT))
1847                         goto nla_put_failure;
1848                 if ((rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) &&
1849                     nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP))
1850                         goto nla_put_failure;
1851                 state->split_start++;
1852                 if (state->split)
1853                         break;
1854         case 1:
1855                 if (nla_put(msg, NL80211_ATTR_CIPHER_SUITES,
1856                             sizeof(u32) * rdev->wiphy.n_cipher_suites,
1857                             rdev->wiphy.cipher_suites))
1858                         goto nla_put_failure;
1859
1860                 if (nla_put_u8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
1861                                rdev->wiphy.max_num_pmkids))
1862                         goto nla_put_failure;
1863
1864                 if ((rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
1865                     nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE))
1866                         goto nla_put_failure;
1867
1868                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX,
1869                                 rdev->wiphy.available_antennas_tx) ||
1870                     nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX,
1871                                 rdev->wiphy.available_antennas_rx))
1872                         goto nla_put_failure;
1873
1874                 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) &&
1875                     nla_put_u32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD,
1876                                 rdev->wiphy.probe_resp_offload))
1877                         goto nla_put_failure;
1878
1879                 if ((rdev->wiphy.available_antennas_tx ||
1880                      rdev->wiphy.available_antennas_rx) &&
1881                     rdev->ops->get_antenna) {
1882                         u32 tx_ant = 0, rx_ant = 0;
1883                         int res;
1884
1885                         res = rdev_get_antenna(rdev, &tx_ant, &rx_ant);
1886                         if (!res) {
1887                                 if (nla_put_u32(msg,
1888                                                 NL80211_ATTR_WIPHY_ANTENNA_TX,
1889                                                 tx_ant) ||
1890                                     nla_put_u32(msg,
1891                                                 NL80211_ATTR_WIPHY_ANTENNA_RX,
1892                                                 rx_ant))
1893                                         goto nla_put_failure;
1894                         }
1895                 }
1896
1897                 state->split_start++;
1898                 if (state->split)
1899                         break;
1900         case 2:
1901                 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES,
1902                                         rdev->wiphy.interface_modes))
1903                                 goto nla_put_failure;
1904                 state->split_start++;
1905                 if (state->split)
1906                         break;
1907         case 3:
1908                 nl_bands = nla_nest_start(msg, NL80211_ATTR_WIPHY_BANDS);
1909                 if (!nl_bands)
1910                         goto nla_put_failure;
1911
1912                 for (band = state->band_start;
1913                      band < NUM_NL80211_BANDS; band++) {
1914                         struct ieee80211_supported_band *sband;
1915
1916                         sband = rdev->wiphy.bands[band];
1917
1918                         if (!sband)
1919                                 continue;
1920
1921                         nl_band = nla_nest_start(msg, band);
1922                         if (!nl_band)
1923                                 goto nla_put_failure;
1924
1925                         switch (state->chan_start) {
1926                         case 0:
1927                                 if (nl80211_send_band_rateinfo(msg, sband))
1928                                         goto nla_put_failure;
1929                                 state->chan_start++;
1930                                 if (state->split)
1931                                         break;
1932                         default:
1933                                 /* add frequencies */
1934                                 nl_freqs = nla_nest_start(
1935                                         msg, NL80211_BAND_ATTR_FREQS);
1936                                 if (!nl_freqs)
1937                                         goto nla_put_failure;
1938
1939                                 for (i = state->chan_start - 1;
1940                                      i < sband->n_channels;
1941                                      i++) {
1942                                         nl_freq = nla_nest_start(msg, i);
1943                                         if (!nl_freq)
1944                                                 goto nla_put_failure;
1945
1946                                         chan = &sband->channels[i];
1947
1948                                         if (nl80211_msg_put_channel(
1949                                                         msg, &rdev->wiphy, chan,
1950                                                         state->split))
1951                                                 goto nla_put_failure;
1952
1953                                         nla_nest_end(msg, nl_freq);
1954                                         if (state->split)
1955                                                 break;
1956                                 }
1957                                 if (i < sband->n_channels)
1958                                         state->chan_start = i + 2;
1959                                 else
1960                                         state->chan_start = 0;
1961                                 nla_nest_end(msg, nl_freqs);
1962                         }
1963
1964                         nla_nest_end(msg, nl_band);
1965
1966                         if (state->split) {
1967                                 /* start again here */
1968                                 if (state->chan_start)
1969                                         band--;
1970                                 break;
1971                         }
1972                 }
1973                 nla_nest_end(msg, nl_bands);
1974
1975                 if (band < NUM_NL80211_BANDS)
1976                         state->band_start = band + 1;
1977                 else
1978                         state->band_start = 0;
1979
1980                 /* if bands & channels are done, continue outside */
1981                 if (state->band_start == 0 && state->chan_start == 0)
1982                         state->split_start++;
1983                 if (state->split)
1984                         break;
1985         case 4:
1986                 nl_cmds = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_COMMANDS);
1987                 if (!nl_cmds)
1988                         goto nla_put_failure;
1989
1990                 i = nl80211_add_commands_unsplit(rdev, msg);
1991                 if (i < 0)
1992                         goto nla_put_failure;
1993                 if (state->split) {
1994                         CMD(crit_proto_start, CRIT_PROTOCOL_START);
1995                         CMD(crit_proto_stop, CRIT_PROTOCOL_STOP);
1996                         if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH)
1997                                 CMD(channel_switch, CHANNEL_SWITCH);
1998                         CMD(set_qos_map, SET_QOS_MAP);
1999                         if (rdev->wiphy.features &
2000                                         NL80211_FEATURE_SUPPORTS_WMM_ADMISSION)
2001                                 CMD(add_tx_ts, ADD_TX_TS);
2002                         CMD(set_multicast_to_unicast, SET_MULTICAST_TO_UNICAST);
2003                         CMD(update_connect_params, UPDATE_CONNECT_PARAMS);
2004                 }
2005 #undef CMD
2006
2007                 nla_nest_end(msg, nl_cmds);
2008                 state->split_start++;
2009                 if (state->split)
2010                         break;
2011         case 5:
2012                 if (rdev->ops->remain_on_channel &&
2013                     (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) &&
2014                     nla_put_u32(msg,
2015                                 NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
2016                                 rdev->wiphy.max_remain_on_channel_duration))
2017                         goto nla_put_failure;
2018
2019                 if ((rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) &&
2020                     nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK))
2021                         goto nla_put_failure;
2022
2023                 if (nl80211_send_mgmt_stypes(msg, mgmt_stypes))
2024                         goto nla_put_failure;
2025                 state->split_start++;
2026                 if (state->split)
2027                         break;
2028         case 6:
2029 #ifdef CONFIG_PM
2030                 if (nl80211_send_wowlan(msg, rdev, state->split))
2031                         goto nla_put_failure;
2032                 state->split_start++;
2033                 if (state->split)
2034                         break;
2035 #else
2036                 state->split_start++;
2037 #endif
2038         case 7:
2039                 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES,
2040                                         rdev->wiphy.software_iftypes))
2041                         goto nla_put_failure;
2042
2043                 if (nl80211_put_iface_combinations(&rdev->wiphy, msg,
2044                                                    state->split))
2045                         goto nla_put_failure;
2046
2047                 state->split_start++;
2048                 if (state->split)
2049                         break;
2050         case 8:
2051                 if ((rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) &&
2052                     nla_put_u32(msg, NL80211_ATTR_DEVICE_AP_SME,
2053                                 rdev->wiphy.ap_sme_capa))
2054                         goto nla_put_failure;
2055
2056                 features = rdev->wiphy.features;
2057                 /*
2058                  * We can only add the per-channel limit information if the
2059                  * dump is split, otherwise it makes it too big. Therefore
2060                  * only advertise it in that case.
2061                  */
2062                 if (state->split)
2063                         features |= NL80211_FEATURE_ADVERTISE_CHAN_LIMITS;
2064                 if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS, features))
2065                         goto nla_put_failure;
2066
2067                 if (rdev->wiphy.ht_capa_mod_mask &&
2068                     nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK,
2069                             sizeof(*rdev->wiphy.ht_capa_mod_mask),
2070                             rdev->wiphy.ht_capa_mod_mask))
2071                         goto nla_put_failure;
2072
2073                 if (rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME &&
2074                     rdev->wiphy.max_acl_mac_addrs &&
2075                     nla_put_u32(msg, NL80211_ATTR_MAC_ACL_MAX,
2076                                 rdev->wiphy.max_acl_mac_addrs))
2077                         goto nla_put_failure;
2078
2079                 /*
2080                  * Any information below this point is only available to
2081                  * applications that can deal with it being split. This
2082                  * helps ensure that newly added capabilities don't break
2083                  * older tools by overrunning their buffers.
2084                  *
2085                  * We still increment split_start so that in the split
2086                  * case we'll continue with more data in the next round,
2087                  * but break unconditionally so unsplit data stops here.
2088                  */
2089                 state->split_start++;
2090                 break;
2091         case 9:
2092                 if (rdev->wiphy.extended_capabilities &&
2093                     (nla_put(msg, NL80211_ATTR_EXT_CAPA,
2094                              rdev->wiphy.extended_capabilities_len,
2095                              rdev->wiphy.extended_capabilities) ||
2096                      nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
2097                              rdev->wiphy.extended_capabilities_len,
2098                              rdev->wiphy.extended_capabilities_mask)))
2099                         goto nla_put_failure;
2100
2101                 if (rdev->wiphy.vht_capa_mod_mask &&
2102                     nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK,
2103                             sizeof(*rdev->wiphy.vht_capa_mod_mask),
2104                             rdev->wiphy.vht_capa_mod_mask))
2105                         goto nla_put_failure;
2106
2107                 state->split_start++;
2108                 break;
2109         case 10:
2110                 if (nl80211_send_coalesce(msg, rdev))
2111                         goto nla_put_failure;
2112
2113                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ) &&
2114                     (nla_put_flag(msg, NL80211_ATTR_SUPPORT_5_MHZ) ||
2115                      nla_put_flag(msg, NL80211_ATTR_SUPPORT_10_MHZ)))
2116                         goto nla_put_failure;
2117
2118                 if (rdev->wiphy.max_ap_assoc_sta &&
2119                     nla_put_u32(msg, NL80211_ATTR_MAX_AP_ASSOC_STA,
2120                                 rdev->wiphy.max_ap_assoc_sta))
2121                         goto nla_put_failure;
2122
2123                 state->split_start++;
2124                 break;
2125         case 11:
2126                 if (rdev->wiphy.n_vendor_commands) {
2127                         const struct nl80211_vendor_cmd_info *info;
2128                         struct nlattr *nested;
2129
2130                         nested = nla_nest_start(msg, NL80211_ATTR_VENDOR_DATA);
2131                         if (!nested)
2132                                 goto nla_put_failure;
2133
2134                         for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
2135                                 info = &rdev->wiphy.vendor_commands[i].info;
2136                                 if (nla_put(msg, i + 1, sizeof(*info), info))
2137                                         goto nla_put_failure;
2138                         }
2139                         nla_nest_end(msg, nested);
2140                 }
2141
2142                 if (rdev->wiphy.n_vendor_events) {
2143                         const struct nl80211_vendor_cmd_info *info;
2144                         struct nlattr *nested;
2145
2146                         nested = nla_nest_start(msg,
2147                                                 NL80211_ATTR_VENDOR_EVENTS);
2148                         if (!nested)
2149                                 goto nla_put_failure;
2150
2151                         for (i = 0; i < rdev->wiphy.n_vendor_events; i++) {
2152                                 info = &rdev->wiphy.vendor_events[i];
2153                                 if (nla_put(msg, i + 1, sizeof(*info), info))
2154                                         goto nla_put_failure;
2155                         }
2156                         nla_nest_end(msg, nested);
2157                 }
2158                 state->split_start++;
2159                 break;
2160         case 12:
2161                 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH &&
2162                     nla_put_u8(msg, NL80211_ATTR_MAX_CSA_COUNTERS,
2163                                rdev->wiphy.max_num_csa_counters))
2164                         goto nla_put_failure;
2165
2166                 if (rdev->wiphy.regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
2167                     nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
2168                         goto nla_put_failure;
2169
2170                 if (rdev->wiphy.max_sched_scan_reqs &&
2171                     nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_MAX_REQS,
2172                                 rdev->wiphy.max_sched_scan_reqs))
2173                         goto nla_put_failure;
2174
2175                 if (nla_put(msg, NL80211_ATTR_EXT_FEATURES,
2176                             sizeof(rdev->wiphy.ext_features),
2177                             rdev->wiphy.ext_features))
2178                         goto nla_put_failure;
2179
2180                 if (rdev->wiphy.bss_select_support) {
2181                         struct nlattr *nested;
2182                         u32 bss_select_support = rdev->wiphy.bss_select_support;
2183
2184                         nested = nla_nest_start(msg, NL80211_ATTR_BSS_SELECT);
2185                         if (!nested)
2186                                 goto nla_put_failure;
2187
2188                         i = 0;
2189                         while (bss_select_support) {
2190                                 if ((bss_select_support & 1) &&
2191                                     nla_put_flag(msg, i))
2192                                         goto nla_put_failure;
2193                                 i++;
2194                                 bss_select_support >>= 1;
2195                         }
2196                         nla_nest_end(msg, nested);
2197                 }
2198
2199                 state->split_start++;
2200                 break;
2201         case 13:
2202                 if (rdev->wiphy.num_iftype_ext_capab &&
2203                     rdev->wiphy.iftype_ext_capab) {
2204                         struct nlattr *nested_ext_capab, *nested;
2205
2206                         nested = nla_nest_start(msg,
2207                                                 NL80211_ATTR_IFTYPE_EXT_CAPA);
2208                         if (!nested)
2209                                 goto nla_put_failure;
2210
2211                         for (i = state->capa_start;
2212                              i < rdev->wiphy.num_iftype_ext_capab; i++) {
2213                                 const struct wiphy_iftype_ext_capab *capab;
2214
2215                                 capab = &rdev->wiphy.iftype_ext_capab[i];
2216
2217                                 nested_ext_capab = nla_nest_start(msg, i);
2218                                 if (!nested_ext_capab ||
2219                                     nla_put_u32(msg, NL80211_ATTR_IFTYPE,
2220                                                 capab->iftype) ||
2221                                     nla_put(msg, NL80211_ATTR_EXT_CAPA,
2222                                             capab->extended_capabilities_len,
2223                                             capab->extended_capabilities) ||
2224                                     nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
2225                                             capab->extended_capabilities_len,
2226                                             capab->extended_capabilities_mask))
2227                                         goto nla_put_failure;
2228
2229                                 nla_nest_end(msg, nested_ext_capab);
2230                                 if (state->split)
2231                                         break;
2232                         }
2233                         nla_nest_end(msg, nested);
2234                         if (i < rdev->wiphy.num_iftype_ext_capab) {
2235                                 state->capa_start = i + 1;
2236                                 break;
2237                         }
2238                 }
2239
2240                 if (nla_put_u32(msg, NL80211_ATTR_BANDS,
2241                                 rdev->wiphy.nan_supported_bands))
2242                         goto nla_put_failure;
2243
2244                 if (wiphy_ext_feature_isset(&rdev->wiphy,
2245                                             NL80211_EXT_FEATURE_TXQS)) {
2246                         struct cfg80211_txq_stats txqstats = {};
2247                         int res;
2248
2249                         res = rdev_get_txq_stats(rdev, NULL, &txqstats);
2250                         if (!res &&
2251                             !nl80211_put_txq_stats(msg, &txqstats,
2252                                                    NL80211_ATTR_TXQ_STATS))
2253                                 goto nla_put_failure;
2254
2255                         if (nla_put_u32(msg, NL80211_ATTR_TXQ_LIMIT,
2256                                         rdev->wiphy.txq_limit))
2257                                 goto nla_put_failure;
2258                         if (nla_put_u32(msg, NL80211_ATTR_TXQ_MEMORY_LIMIT,
2259                                         rdev->wiphy.txq_memory_limit))
2260                                 goto nla_put_failure;
2261                         if (nla_put_u32(msg, NL80211_ATTR_TXQ_QUANTUM,
2262                                         rdev->wiphy.txq_quantum))
2263                                 goto nla_put_failure;
2264                 }
2265
2266                 state->split_start++;
2267                 break;
2268         case 14:
2269                 if (nl80211_send_pmsr_capa(rdev, msg))
2270                         goto nla_put_failure;
2271
2272                 /* done */
2273                 state->split_start = 0;
2274                 break;
2275         }
2276  finish:
2277         genlmsg_end(msg, hdr);
2278         return 0;
2279
2280  nla_put_failure:
2281         genlmsg_cancel(msg, hdr);
2282         return -EMSGSIZE;
2283 }
2284
2285 static int nl80211_dump_wiphy_parse(struct sk_buff *skb,
2286                                     struct netlink_callback *cb,
2287                                     struct nl80211_dump_wiphy_state *state)
2288 {
2289         struct nlattr **tb = genl_family_attrbuf(&nl80211_fam);
2290         int ret = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize, tb,
2291                               nl80211_fam.maxattr, nl80211_policy, NULL);
2292         /* ignore parse errors for backward compatibility */
2293         if (ret)
2294                 return 0;
2295
2296         state->split = tb[NL80211_ATTR_SPLIT_WIPHY_DUMP];
2297         if (tb[NL80211_ATTR_WIPHY])
2298                 state->filter_wiphy = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
2299         if (tb[NL80211_ATTR_WDEV])
2300                 state->filter_wiphy = nla_get_u64(tb[NL80211_ATTR_WDEV]) >> 32;
2301         if (tb[NL80211_ATTR_IFINDEX]) {
2302                 struct net_device *netdev;
2303                 struct cfg80211_registered_device *rdev;
2304                 int ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
2305
2306                 netdev = __dev_get_by_index(sock_net(skb->sk), ifidx);
2307                 if (!netdev)
2308                         return -ENODEV;
2309                 if (netdev->ieee80211_ptr) {
2310                         rdev = wiphy_to_rdev(
2311                                 netdev->ieee80211_ptr->wiphy);
2312                         state->filter_wiphy = rdev->wiphy_idx;
2313                 }
2314         }
2315
2316         return 0;
2317 }
2318
2319 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
2320 {
2321         int idx = 0, ret;
2322         struct nl80211_dump_wiphy_state *state = (void *)cb->args[0];
2323         struct cfg80211_registered_device *rdev;
2324
2325         rtnl_lock();
2326         if (!state) {
2327                 state = kzalloc(sizeof(*state), GFP_KERNEL);
2328                 if (!state) {
2329                         rtnl_unlock();
2330                         return -ENOMEM;
2331                 }
2332                 state->filter_wiphy = -1;
2333                 ret = nl80211_dump_wiphy_parse(skb, cb, state);
2334                 if (ret) {
2335                         kfree(state);
2336                         rtnl_unlock();
2337                         return ret;
2338                 }
2339                 cb->args[0] = (long)state;
2340         }
2341
2342         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
2343                 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
2344                         continue;
2345                 if (++idx <= state->start)
2346                         continue;
2347                 if (state->filter_wiphy != -1 &&
2348                     state->filter_wiphy != rdev->wiphy_idx)
2349                         continue;
2350                 /* attempt to fit multiple wiphy data chunks into the skb */
2351                 do {
2352                         ret = nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY,
2353                                                  skb,
2354                                                  NETLINK_CB(cb->skb).portid,
2355                                                  cb->nlh->nlmsg_seq,
2356                                                  NLM_F_MULTI, state);
2357                         if (ret < 0) {
2358                                 /*
2359                                  * If sending the wiphy data didn't fit (ENOBUFS
2360                                  * or EMSGSIZE returned), this SKB is still
2361                                  * empty (so it's not too big because another
2362                                  * wiphy dataset is already in the skb) and
2363                                  * we've not tried to adjust the dump allocation
2364                                  * yet ... then adjust the alloc size to be
2365                                  * bigger, and return 1 but with the empty skb.
2366                                  * This results in an empty message being RX'ed
2367                                  * in userspace, but that is ignored.
2368                                  *
2369                                  * We can then retry with the larger buffer.
2370                                  */
2371                                 if ((ret == -ENOBUFS || ret == -EMSGSIZE) &&
2372                                     !skb->len && !state->split &&
2373                                     cb->min_dump_alloc < 4096) {
2374                                         cb->min_dump_alloc = 4096;
2375                                         state->split_start = 0;
2376                                         rtnl_unlock();
2377                                         return 1;
2378                                 }
2379                                 idx--;
2380                                 break;
2381                         }
2382                 } while (state->split_start > 0);
2383                 break;
2384         }
2385         rtnl_unlock();
2386
2387         state->start = idx;
2388
2389         return skb->len;
2390 }
2391
2392 static int nl80211_dump_wiphy_done(struct netlink_callback *cb)
2393 {
2394         kfree((void *)cb->args[0]);
2395         return 0;
2396 }
2397
2398 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
2399 {
2400         struct sk_buff *msg;
2401         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2402         struct nl80211_dump_wiphy_state state = {};
2403
2404         msg = nlmsg_new(4096, GFP_KERNEL);
2405         if (!msg)
2406                 return -ENOMEM;
2407
2408         if (nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY, msg,
2409                                info->snd_portid, info->snd_seq, 0,
2410                                &state) < 0) {
2411                 nlmsg_free(msg);
2412                 return -ENOBUFS;
2413         }
2414
2415         return genlmsg_reply(msg, info);
2416 }
2417
2418 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
2419         [NL80211_TXQ_ATTR_QUEUE]                = { .type = NLA_U8 },
2420         [NL80211_TXQ_ATTR_TXOP]                 = { .type = NLA_U16 },
2421         [NL80211_TXQ_ATTR_CWMIN]                = { .type = NLA_U16 },
2422         [NL80211_TXQ_ATTR_CWMAX]                = { .type = NLA_U16 },
2423         [NL80211_TXQ_ATTR_AIFS]                 = { .type = NLA_U8 },
2424 };
2425
2426 static int parse_txq_params(struct nlattr *tb[],
2427                             struct ieee80211_txq_params *txq_params)
2428 {
2429         u8 ac;
2430
2431         if (!tb[NL80211_TXQ_ATTR_AC] || !tb[NL80211_TXQ_ATTR_TXOP] ||
2432             !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
2433             !tb[NL80211_TXQ_ATTR_AIFS])
2434                 return -EINVAL;
2435
2436         ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]);
2437         txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
2438         txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
2439         txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
2440         txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
2441
2442         if (ac >= NL80211_NUM_ACS)
2443                 return -EINVAL;
2444         txq_params->ac = array_index_nospec(ac, NL80211_NUM_ACS);
2445         return 0;
2446 }
2447
2448 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
2449 {
2450         /*
2451          * You can only set the channel explicitly for WDS interfaces,
2452          * all others have their channel managed via their respective
2453          * "establish a connection" command (connect, join, ...)
2454          *
2455          * For AP/GO and mesh mode, the channel can be set with the
2456          * channel userspace API, but is only stored and passed to the
2457          * low-level driver when the AP starts or the mesh is joined.
2458          * This is for backward compatibility, userspace can also give
2459          * the channel in the start-ap or join-mesh commands instead.
2460          *
2461          * Monitors are special as they are normally slaved to
2462          * whatever else is going on, so they have their own special
2463          * operation to set the monitor channel if possible.
2464          */
2465         return !wdev ||
2466                 wdev->iftype == NL80211_IFTYPE_AP ||
2467                 wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
2468                 wdev->iftype == NL80211_IFTYPE_MONITOR ||
2469                 wdev->iftype == NL80211_IFTYPE_P2P_GO;
2470 }
2471
2472 int nl80211_parse_chandef(struct cfg80211_registered_device *rdev,
2473                           struct genl_info *info,
2474                           struct cfg80211_chan_def *chandef)
2475 {
2476         struct netlink_ext_ack *extack = info->extack;
2477         struct nlattr **attrs = info->attrs;
2478         u32 control_freq;
2479
2480         if (!attrs[NL80211_ATTR_WIPHY_FREQ])
2481                 return -EINVAL;
2482
2483         control_freq = nla_get_u32(attrs[NL80211_ATTR_WIPHY_FREQ]);
2484
2485         chandef->chan = ieee80211_get_channel(&rdev->wiphy, control_freq);
2486         chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
2487         chandef->center_freq1 = control_freq;
2488         chandef->center_freq2 = 0;
2489
2490         /* Primary channel not allowed */
2491         if (!chandef->chan || chandef->chan->flags & IEEE80211_CHAN_DISABLED) {
2492                 NL_SET_ERR_MSG_ATTR(extack, attrs[NL80211_ATTR_WIPHY_FREQ],
2493                                     "Channel is disabled");
2494                 return -EINVAL;
2495         }
2496
2497         if (attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
2498                 enum nl80211_channel_type chantype;
2499
2500                 chantype = nla_get_u32(attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
2501
2502                 switch (chantype) {
2503                 case NL80211_CHAN_NO_HT:
2504                 case NL80211_CHAN_HT20:
2505                 case NL80211_CHAN_HT40PLUS:
2506                 case NL80211_CHAN_HT40MINUS:
2507                         cfg80211_chandef_create(chandef, chandef->chan,
2508                                                 chantype);
2509                         /* user input for center_freq is incorrect */
2510                         if (attrs[NL80211_ATTR_CENTER_FREQ1] &&
2511                             chandef->center_freq1 != nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ1])) {
2512                                 NL_SET_ERR_MSG_ATTR(extack,
2513                                                     attrs[NL80211_ATTR_CENTER_FREQ1],
2514                                                     "bad center frequency 1");
2515                                 return -EINVAL;
2516                         }
2517                         /* center_freq2 must be zero */
2518                         if (attrs[NL80211_ATTR_CENTER_FREQ2] &&
2519                             nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ2])) {
2520                                 NL_SET_ERR_MSG_ATTR(extack,
2521                                                     attrs[NL80211_ATTR_CENTER_FREQ2],
2522                                                     "center frequency 2 can't be used");
2523                                 return -EINVAL;
2524                         }
2525                         break;
2526                 default:
2527                         NL_SET_ERR_MSG_ATTR(extack,
2528                                             attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE],
2529                                             "invalid channel type");
2530                         return -EINVAL;
2531                 }
2532         } else if (attrs[NL80211_ATTR_CHANNEL_WIDTH]) {
2533                 chandef->width =
2534                         nla_get_u32(attrs[NL80211_ATTR_CHANNEL_WIDTH]);
2535                 if (attrs[NL80211_ATTR_CENTER_FREQ1])
2536                         chandef->center_freq1 =
2537                                 nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ1]);
2538                 if (attrs[NL80211_ATTR_CENTER_FREQ2])
2539                         chandef->center_freq2 =
2540                                 nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ2]);
2541         }
2542
2543         if (!cfg80211_chandef_valid(chandef)) {
2544                 NL_SET_ERR_MSG(extack, "invalid channel definition");
2545                 return -EINVAL;
2546         }
2547
2548         if (!cfg80211_chandef_usable(&rdev->wiphy, chandef,
2549                                      IEEE80211_CHAN_DISABLED)) {
2550                 NL_SET_ERR_MSG(extack, "(extension) channel is disabled");
2551                 return -EINVAL;
2552         }
2553
2554         if ((chandef->width == NL80211_CHAN_WIDTH_5 ||
2555              chandef->width == NL80211_CHAN_WIDTH_10) &&
2556             !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ)) {
2557                 NL_SET_ERR_MSG(extack, "5/10 MHz not supported");
2558                 return -EINVAL;
2559         }
2560
2561         return 0;
2562 }
2563
2564 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
2565                                  struct net_device *dev,
2566                                  struct genl_info *info)
2567 {
2568         struct cfg80211_chan_def chandef;
2569         int result;
2570         enum nl80211_iftype iftype = NL80211_IFTYPE_MONITOR;
2571         struct wireless_dev *wdev = NULL;
2572
2573         if (dev)
2574                 wdev = dev->ieee80211_ptr;
2575         if (!nl80211_can_set_dev_channel(wdev))
2576                 return -EOPNOTSUPP;
2577         if (wdev)
2578                 iftype = wdev->iftype;
2579
2580         result = nl80211_parse_chandef(rdev, info, &chandef);
2581         if (result)
2582                 return result;
2583
2584         switch (iftype) {
2585         case NL80211_IFTYPE_AP:
2586         case NL80211_IFTYPE_P2P_GO:
2587                 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
2588                                                    iftype)) {
2589                         result = -EINVAL;
2590                         break;
2591                 }
2592                 if (wdev->beacon_interval) {
2593                         if (!dev || !rdev->ops->set_ap_chanwidth ||
2594                             !(rdev->wiphy.features &
2595                               NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE)) {
2596                                 result = -EBUSY;
2597                                 break;
2598                         }
2599
2600                         /* Only allow dynamic channel width changes */
2601                         if (chandef.chan != wdev->preset_chandef.chan) {
2602                                 result = -EBUSY;
2603                                 break;
2604                         }
2605                         result = rdev_set_ap_chanwidth(rdev, dev, &chandef);
2606                         if (result)
2607                                 break;
2608                 }
2609                 wdev->preset_chandef = chandef;
2610                 result = 0;
2611                 break;
2612         case NL80211_IFTYPE_MESH_POINT:
2613                 result = cfg80211_set_mesh_channel(rdev, wdev, &chandef);
2614                 break;
2615         case NL80211_IFTYPE_MONITOR:
2616                 result = cfg80211_set_monitor_channel(rdev, &chandef);
2617                 break;
2618         default:
2619                 result = -EINVAL;
2620         }
2621
2622         return result;
2623 }
2624
2625 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
2626 {
2627         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2628         struct net_device *netdev = info->user_ptr[1];
2629
2630         return __nl80211_set_channel(rdev, netdev, info);
2631 }
2632
2633 static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info)
2634 {
2635         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2636         struct net_device *dev = info->user_ptr[1];
2637         struct wireless_dev *wdev = dev->ieee80211_ptr;
2638         const u8 *bssid;
2639
2640         if (!info->attrs[NL80211_ATTR_MAC])
2641                 return -EINVAL;
2642
2643         if (netif_running(dev))
2644                 return -EBUSY;
2645
2646         if (!rdev->ops->set_wds_peer)
2647                 return -EOPNOTSUPP;
2648
2649         if (wdev->iftype != NL80211_IFTYPE_WDS)
2650                 return -EOPNOTSUPP;
2651
2652         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
2653         return rdev_set_wds_peer(rdev, dev, bssid);
2654 }
2655
2656 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
2657 {
2658         struct cfg80211_registered_device *rdev;
2659         struct net_device *netdev = NULL;
2660         struct wireless_dev *wdev;
2661         int result = 0, rem_txq_params = 0;
2662         struct nlattr *nl_txq_params;
2663         u32 changed;
2664         u8 retry_short = 0, retry_long = 0;
2665         u32 frag_threshold = 0, rts_threshold = 0;
2666         u8 coverage_class = 0;
2667         u32 txq_limit = 0, txq_memory_limit = 0, txq_quantum = 0;
2668
2669         ASSERT_RTNL();
2670
2671         /*
2672          * Try to find the wiphy and netdev. Normally this
2673          * function shouldn't need the netdev, but this is
2674          * done for backward compatibility -- previously
2675          * setting the channel was done per wiphy, but now
2676          * it is per netdev. Previous userland like hostapd
2677          * also passed a netdev to set_wiphy, so that it is
2678          * possible to let that go to the right netdev!
2679          */
2680
2681         if (info->attrs[NL80211_ATTR_IFINDEX]) {
2682                 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
2683
2684                 netdev = __dev_get_by_index(genl_info_net(info), ifindex);
2685                 if (netdev && netdev->ieee80211_ptr)
2686                         rdev = wiphy_to_rdev(netdev->ieee80211_ptr->wiphy);
2687                 else
2688                         netdev = NULL;
2689         }
2690
2691         if (!netdev) {
2692                 rdev = __cfg80211_rdev_from_attrs(genl_info_net(info),
2693                                                   info->attrs);
2694                 if (IS_ERR(rdev))
2695                         return PTR_ERR(rdev);
2696                 wdev = NULL;
2697                 netdev = NULL;
2698                 result = 0;
2699         } else
2700                 wdev = netdev->ieee80211_ptr;
2701
2702         /*
2703          * end workaround code, by now the rdev is available
2704          * and locked, and wdev may or may not be NULL.
2705          */
2706
2707         if (info->attrs[NL80211_ATTR_WIPHY_NAME])
2708                 result = cfg80211_dev_rename(
2709                         rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
2710
2711         if (result)
2712                 return result;
2713
2714         if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
2715                 struct ieee80211_txq_params txq_params;
2716                 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
2717
2718                 if (!rdev->ops->set_txq_params)
2719                         return -EOPNOTSUPP;
2720
2721                 if (!netdev)
2722                         return -EINVAL;
2723
2724                 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2725                     netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2726                         return -EINVAL;
2727
2728                 if (!netif_running(netdev))
2729                         return -ENETDOWN;
2730
2731                 nla_for_each_nested(nl_txq_params,
2732                                     info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
2733                                     rem_txq_params) {
2734                         result = nla_parse_nested(tb, NL80211_TXQ_ATTR_MAX,
2735                                                   nl_txq_params,
2736                                                   txq_params_policy,
2737                                                   info->extack);
2738                         if (result)
2739                                 return result;
2740                         result = parse_txq_params(tb, &txq_params);
2741                         if (result)
2742                                 return result;
2743
2744                         result = rdev_set_txq_params(rdev, netdev,
2745                                                      &txq_params);
2746                         if (result)
2747                                 return result;
2748                 }
2749         }
2750
2751         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
2752                 result = __nl80211_set_channel(
2753                         rdev,
2754                         nl80211_can_set_dev_channel(wdev) ? netdev : NULL,
2755                         info);
2756                 if (result)
2757                         return result;
2758         }
2759
2760         if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
2761                 struct wireless_dev *txp_wdev = wdev;
2762                 enum nl80211_tx_power_setting type;
2763                 int idx, mbm = 0;
2764
2765                 if (!(rdev->wiphy.features & NL80211_FEATURE_VIF_TXPOWER))
2766                         txp_wdev = NULL;
2767
2768                 if (!rdev->ops->set_tx_power)
2769                         return -EOPNOTSUPP;
2770
2771                 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
2772                 type = nla_get_u32(info->attrs[idx]);
2773
2774                 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
2775                     (type != NL80211_TX_POWER_AUTOMATIC))
2776                         return -EINVAL;
2777
2778                 if (type != NL80211_TX_POWER_AUTOMATIC) {
2779                         idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
2780                         mbm = nla_get_u32(info->attrs[idx]);
2781                 }
2782
2783                 result = rdev_set_tx_power(rdev, txp_wdev, type, mbm);
2784                 if (result)
2785                         return result;
2786         }
2787
2788         if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
2789             info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
2790                 u32 tx_ant, rx_ant;
2791
2792                 if ((!rdev->wiphy.available_antennas_tx &&
2793                      !rdev->wiphy.available_antennas_rx) ||
2794                     !rdev->ops->set_antenna)
2795                         return -EOPNOTSUPP;
2796
2797                 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
2798                 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
2799
2800                 /* reject antenna configurations which don't match the
2801                  * available antenna masks, except for the "all" mask */
2802                 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) ||
2803                     (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx)))
2804                         return -EINVAL;
2805
2806                 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx;
2807                 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx;
2808
2809                 result = rdev_set_antenna(rdev, tx_ant, rx_ant);
2810                 if (result)
2811                         return result;
2812         }
2813
2814         changed = 0;
2815
2816         if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
2817                 retry_short = nla_get_u8(
2818                         info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
2819
2820                 changed |= WIPHY_PARAM_RETRY_SHORT;
2821         }
2822
2823         if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
2824                 retry_long = nla_get_u8(
2825                         info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
2826
2827                 changed |= WIPHY_PARAM_RETRY_LONG;
2828         }
2829
2830         if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
2831                 frag_threshold = nla_get_u32(
2832                         info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
2833                 if (frag_threshold < 256)
2834                         return -EINVAL;
2835
2836                 if (frag_threshold != (u32) -1) {
2837                         /*
2838                          * Fragments (apart from the last one) are required to
2839                          * have even length. Make the fragmentation code
2840                          * simpler by stripping LSB should someone try to use
2841                          * odd threshold value.
2842                          */
2843                         frag_threshold &= ~0x1;
2844                 }
2845                 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
2846         }
2847
2848         if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
2849                 rts_threshold = nla_get_u32(
2850                         info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
2851                 changed |= WIPHY_PARAM_RTS_THRESHOLD;
2852         }
2853
2854         if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
2855                 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK])
2856                         return -EINVAL;
2857
2858                 coverage_class = nla_get_u8(
2859                         info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
2860                 changed |= WIPHY_PARAM_COVERAGE_CLASS;
2861         }
2862
2863         if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK]) {
2864                 if (!(rdev->wiphy.features & NL80211_FEATURE_ACKTO_ESTIMATION))
2865                         return -EOPNOTSUPP;
2866
2867                 changed |= WIPHY_PARAM_DYN_ACK;
2868         }
2869
2870         if (info->attrs[NL80211_ATTR_TXQ_LIMIT]) {
2871                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
2872                                              NL80211_EXT_FEATURE_TXQS))
2873                         return -EOPNOTSUPP;
2874                 txq_limit = nla_get_u32(
2875                         info->attrs[NL80211_ATTR_TXQ_LIMIT]);
2876                 changed |= WIPHY_PARAM_TXQ_LIMIT;
2877         }
2878
2879         if (info->attrs[NL80211_ATTR_TXQ_MEMORY_LIMIT]) {
2880                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
2881                                              NL80211_EXT_FEATURE_TXQS))
2882                         return -EOPNOTSUPP;
2883                 txq_memory_limit = nla_get_u32(
2884                         info->attrs[NL80211_ATTR_TXQ_MEMORY_LIMIT]);
2885                 changed |= WIPHY_PARAM_TXQ_MEMORY_LIMIT;
2886         }
2887
2888         if (info->attrs[NL80211_ATTR_TXQ_QUANTUM]) {
2889                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
2890                                              NL80211_EXT_FEATURE_TXQS))
2891                         return -EOPNOTSUPP;
2892                 txq_quantum = nla_get_u32(
2893                         info->attrs[NL80211_ATTR_TXQ_QUANTUM]);
2894                 changed |= WIPHY_PARAM_TXQ_QUANTUM;
2895         }
2896
2897         if (changed) {
2898                 u8 old_retry_short, old_retry_long;
2899                 u32 old_frag_threshold, old_rts_threshold;
2900                 u8 old_coverage_class;
2901                 u32 old_txq_limit, old_txq_memory_limit, old_txq_quantum;
2902
2903                 if (!rdev->ops->set_wiphy_params)
2904                         return -EOPNOTSUPP;
2905
2906                 old_retry_short = rdev->wiphy.retry_short;
2907                 old_retry_long = rdev->wiphy.retry_long;
2908                 old_frag_threshold = rdev->wiphy.frag_threshold;
2909                 old_rts_threshold = rdev->wiphy.rts_threshold;
2910                 old_coverage_class = rdev->wiphy.coverage_class;
2911                 old_txq_limit = rdev->wiphy.txq_limit;
2912                 old_txq_memory_limit = rdev->wiphy.txq_memory_limit;
2913                 old_txq_quantum = rdev->wiphy.txq_quantum;
2914
2915                 if (changed & WIPHY_PARAM_RETRY_SHORT)
2916                         rdev->wiphy.retry_short = retry_short;
2917                 if (changed & WIPHY_PARAM_RETRY_LONG)
2918                         rdev->wiphy.retry_long = retry_long;
2919                 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
2920                         rdev->wiphy.frag_threshold = frag_threshold;
2921                 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
2922                         rdev->wiphy.rts_threshold = rts_threshold;
2923                 if (changed & WIPHY_PARAM_COVERAGE_CLASS)
2924                         rdev->wiphy.coverage_class = coverage_class;
2925                 if (changed & WIPHY_PARAM_TXQ_LIMIT)
2926                         rdev->wiphy.txq_limit = txq_limit;
2927                 if (changed & WIPHY_PARAM_TXQ_MEMORY_LIMIT)
2928                         rdev->wiphy.txq_memory_limit = txq_memory_limit;
2929                 if (changed & WIPHY_PARAM_TXQ_QUANTUM)
2930                         rdev->wiphy.txq_quantum = txq_quantum;
2931
2932                 result = rdev_set_wiphy_params(rdev, changed);
2933                 if (result) {
2934                         rdev->wiphy.retry_short = old_retry_short;
2935                         rdev->wiphy.retry_long = old_retry_long;
2936                         rdev->wiphy.frag_threshold = old_frag_threshold;
2937                         rdev->wiphy.rts_threshold = old_rts_threshold;
2938                         rdev->wiphy.coverage_class = old_coverage_class;
2939                         rdev->wiphy.txq_limit = old_txq_limit;
2940                         rdev->wiphy.txq_memory_limit = old_txq_memory_limit;
2941                         rdev->wiphy.txq_quantum = old_txq_quantum;
2942                         return result;
2943                 }
2944         }
2945         return 0;
2946 }
2947
2948 static int nl80211_send_chandef(struct sk_buff *msg,
2949                                 const struct cfg80211_chan_def *chandef)
2950 {
2951         if (WARN_ON(!cfg80211_chandef_valid(chandef)))
2952                 return -EINVAL;
2953
2954         if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
2955                         chandef->chan->center_freq))
2956                 return -ENOBUFS;
2957         switch (chandef->width) {
2958         case NL80211_CHAN_WIDTH_20_NOHT:
2959         case NL80211_CHAN_WIDTH_20:
2960         case NL80211_CHAN_WIDTH_40:
2961                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
2962                                 cfg80211_get_chandef_type(chandef)))
2963                         return -ENOBUFS;
2964                 break;
2965         default:
2966                 break;
2967         }
2968         if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, chandef->width))
2969                 return -ENOBUFS;
2970         if (nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1, chandef->center_freq1))
2971                 return -ENOBUFS;
2972         if (chandef->center_freq2 &&
2973             nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2, chandef->center_freq2))
2974                 return -ENOBUFS;
2975         return 0;
2976 }
2977
2978 static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags,
2979                               struct cfg80211_registered_device *rdev,
2980                               struct wireless_dev *wdev,
2981                               enum nl80211_commands cmd)
2982 {
2983         struct net_device *dev = wdev->netdev;
2984         void *hdr;
2985
2986         WARN_ON(cmd != NL80211_CMD_NEW_INTERFACE &&
2987                 cmd != NL80211_CMD_DEL_INTERFACE &&
2988                 cmd != NL80211_CMD_SET_INTERFACE);
2989
2990         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
2991         if (!hdr)
2992                 return -1;
2993
2994         if (dev &&
2995             (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
2996              nla_put_string(msg, NL80211_ATTR_IFNAME, dev->name)))
2997                 goto nla_put_failure;
2998
2999         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
3000             nla_put_u32(msg, NL80211_ATTR_IFTYPE, wdev->iftype) ||
3001             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
3002                               NL80211_ATTR_PAD) ||
3003             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, wdev_address(wdev)) ||
3004             nla_put_u32(msg, NL80211_ATTR_GENERATION,
3005                         rdev->devlist_generation ^
3006                         (cfg80211_rdev_list_generation << 2)) ||
3007             nla_put_u8(msg, NL80211_ATTR_4ADDR, wdev->use_4addr))
3008                 goto nla_put_failure;
3009
3010         if (rdev->ops->get_channel) {
3011                 int ret;
3012                 struct cfg80211_chan_def chandef;
3013
3014                 ret = rdev_get_channel(rdev, wdev, &chandef);
3015                 if (ret == 0) {
3016                         if (nl80211_send_chandef(msg, &chandef))
3017                                 goto nla_put_failure;
3018                 }
3019         }
3020
3021         if (rdev->ops->get_tx_power) {
3022                 int dbm, ret;
3023
3024                 ret = rdev_get_tx_power(rdev, wdev, &dbm);
3025                 if (ret == 0 &&
3026                     nla_put_u32(msg, NL80211_ATTR_WIPHY_TX_POWER_LEVEL,
3027                                 DBM_TO_MBM(dbm)))
3028                         goto nla_put_failure;
3029         }
3030
3031         wdev_lock(wdev);
3032         switch (wdev->iftype) {
3033         case NL80211_IFTYPE_AP:
3034                 if (wdev->ssid_len &&
3035                     nla_put(msg, NL80211_ATTR_SSID, wdev->ssid_len, wdev->ssid))
3036                         goto nla_put_failure_locked;
3037                 break;
3038         case NL80211_IFTYPE_STATION:
3039         case NL80211_IFTYPE_P2P_CLIENT:
3040         case NL80211_IFTYPE_ADHOC: {
3041                 const u8 *ssid_ie;
3042                 if (!wdev->current_bss)
3043                         break;
3044                 rcu_read_lock();
3045                 ssid_ie = ieee80211_bss_get_ie(&wdev->current_bss->pub,
3046                                                WLAN_EID_SSID);
3047                 if (ssid_ie &&
3048                     nla_put(msg, NL80211_ATTR_SSID, ssid_ie[1], ssid_ie + 2))
3049                         goto nla_put_failure_rcu_locked;
3050                 rcu_read_unlock();
3051                 break;
3052                 }
3053         default:
3054                 /* nothing */
3055                 break;
3056         }
3057         wdev_unlock(wdev);
3058
3059         if (rdev->ops->get_txq_stats) {
3060                 struct cfg80211_txq_stats txqstats = {};
3061                 int ret = rdev_get_txq_stats(rdev, wdev, &txqstats);
3062
3063                 if (ret == 0 &&
3064                     !nl80211_put_txq_stats(msg, &txqstats,
3065                                            NL80211_ATTR_TXQ_STATS))
3066                         goto nla_put_failure;
3067         }
3068
3069         genlmsg_end(msg, hdr);
3070         return 0;
3071
3072  nla_put_failure_rcu_locked:
3073         rcu_read_unlock();
3074  nla_put_failure_locked:
3075         wdev_unlock(wdev);
3076  nla_put_failure:
3077         genlmsg_cancel(msg, hdr);
3078         return -EMSGSIZE;
3079 }
3080
3081 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
3082 {
3083         int wp_idx = 0;
3084         int if_idx = 0;
3085         int wp_start = cb->args[0];
3086         int if_start = cb->args[1];
3087         int filter_wiphy = -1;
3088         struct cfg80211_registered_device *rdev;
3089         struct wireless_dev *wdev;
3090         int ret;
3091
3092         rtnl_lock();
3093         if (!cb->args[2]) {
3094                 struct nl80211_dump_wiphy_state state = {
3095                         .filter_wiphy = -1,
3096                 };
3097
3098                 ret = nl80211_dump_wiphy_parse(skb, cb, &state);
3099                 if (ret)
3100                         goto out_unlock;
3101
3102                 filter_wiphy = state.filter_wiphy;
3103
3104                 /*
3105                  * if filtering, set cb->args[2] to +1 since 0 is the default
3106                  * value needed to determine that parsing is necessary.
3107                  */
3108                 if (filter_wiphy >= 0)
3109                         cb->args[2] = filter_wiphy + 1;
3110                 else
3111                         cb->args[2] = -1;
3112         } else if (cb->args[2] > 0) {
3113                 filter_wiphy = cb->args[2] - 1;
3114         }
3115
3116         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
3117                 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
3118                         continue;
3119                 if (wp_idx < wp_start) {
3120                         wp_idx++;
3121                         continue;
3122                 }
3123
3124                 if (filter_wiphy >= 0 && filter_wiphy != rdev->wiphy_idx)
3125                         continue;
3126
3127                 if_idx = 0;
3128
3129                 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
3130                         if (if_idx < if_start) {
3131                                 if_idx++;
3132                                 continue;
3133                         }
3134                         if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).portid,
3135                                                cb->nlh->nlmsg_seq, NLM_F_MULTI,
3136                                                rdev, wdev,
3137                                                NL80211_CMD_NEW_INTERFACE) < 0) {
3138                                 goto out;
3139                         }
3140                         if_idx++;
3141                 }
3142
3143                 wp_idx++;
3144         }
3145  out:
3146         cb->args[0] = wp_idx;
3147         cb->args[1] = if_idx;
3148
3149         ret = skb->len;
3150  out_unlock:
3151         rtnl_unlock();
3152
3153         return ret;
3154 }
3155
3156 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
3157 {
3158         struct sk_buff *msg;
3159         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3160         struct wireless_dev *wdev = info->user_ptr[1];
3161
3162         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3163         if (!msg)
3164                 return -ENOMEM;
3165
3166         if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
3167                                rdev, wdev, NL80211_CMD_NEW_INTERFACE) < 0) {
3168                 nlmsg_free(msg);
3169                 return -ENOBUFS;
3170         }
3171
3172         return genlmsg_reply(msg, info);
3173 }
3174
3175 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
3176         [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
3177         [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
3178         [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
3179         [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
3180         [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
3181         [NL80211_MNTR_FLAG_ACTIVE] = { .type = NLA_FLAG },
3182 };
3183
3184 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
3185 {
3186         struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
3187         int flag;
3188
3189         *mntrflags = 0;
3190
3191         if (!nla)
3192                 return -EINVAL;
3193
3194         if (nla_parse_nested(flags, NL80211_MNTR_FLAG_MAX, nla,
3195                              mntr_flags_policy, NULL))
3196                 return -EINVAL;
3197
3198         for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
3199                 if (flags[flag])
3200                         *mntrflags |= (1<<flag);
3201
3202         *mntrflags |= MONITOR_FLAG_CHANGED;
3203
3204         return 0;
3205 }
3206
3207 static int nl80211_parse_mon_options(struct cfg80211_registered_device *rdev,
3208                                      enum nl80211_iftype type,
3209                                      struct genl_info *info,
3210                                      struct vif_params *params)
3211 {
3212         bool change = false;
3213         int err;
3214
3215         if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
3216                 if (type != NL80211_IFTYPE_MONITOR)
3217                         return -EINVAL;
3218
3219                 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
3220                                           &params->flags);
3221                 if (err)
3222                         return err;
3223
3224                 change = true;
3225         }
3226
3227         if (params->flags & MONITOR_FLAG_ACTIVE &&
3228             !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
3229                 return -EOPNOTSUPP;
3230
3231         if (info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]) {
3232                 const u8 *mumimo_groups;
3233                 u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER;
3234
3235                 if (type != NL80211_IFTYPE_MONITOR)
3236                         return -EINVAL;
3237
3238                 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag))
3239                         return -EOPNOTSUPP;
3240
3241                 mumimo_groups =
3242                         nla_data(info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]);
3243
3244                 /* bits 0 and 63 are reserved and must be zero */
3245                 if ((mumimo_groups[0] & BIT(0)) ||
3246                     (mumimo_groups[VHT_MUMIMO_GROUPS_DATA_LEN - 1] & BIT(7)))
3247                         return -EINVAL;
3248
3249                 params->vht_mumimo_groups = mumimo_groups;
3250                 change = true;
3251         }
3252
3253         if (info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR]) {
3254                 u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER;
3255
3256                 if (type != NL80211_IFTYPE_MONITOR)
3257                         return -EINVAL;
3258
3259                 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag))
3260                         return -EOPNOTSUPP;
3261
3262                 params->vht_mumimo_follow_addr =
3263                         nla_data(info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR]);
3264                 change = true;
3265         }
3266
3267         return change ? 1 : 0;
3268 }
3269
3270 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
3271                                struct net_device *netdev, u8 use_4addr,
3272                                enum nl80211_iftype iftype)
3273 {
3274         if (!use_4addr) {
3275                 if (netdev && (netdev->priv_flags & IFF_BRIDGE_PORT))
3276                         return -EBUSY;
3277                 return 0;
3278         }
3279
3280         switch (iftype) {
3281         case NL80211_IFTYPE_AP_VLAN:
3282                 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
3283                         return 0;
3284                 break;
3285         case NL80211_IFTYPE_STATION:
3286                 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
3287                         return 0;
3288                 break;
3289         default:
3290                 break;
3291         }
3292
3293         return -EOPNOTSUPP;
3294 }
3295
3296 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
3297 {
3298         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3299         struct vif_params params;
3300         int err;
3301         enum nl80211_iftype otype, ntype;
3302         struct net_device *dev = info->user_ptr[1];
3303         bool change = false;
3304
3305         memset(&params, 0, sizeof(params));
3306
3307         otype = ntype = dev->ieee80211_ptr->iftype;
3308
3309         if (info->attrs[NL80211_ATTR_IFTYPE]) {
3310                 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
3311                 if (otype != ntype)
3312                         change = true;
3313         }
3314
3315         if (info->attrs[NL80211_ATTR_MESH_ID]) {
3316                 struct wireless_dev *wdev = dev->ieee80211_ptr;
3317
3318                 if (ntype != NL80211_IFTYPE_MESH_POINT)
3319                         return -EINVAL;
3320                 if (netif_running(dev))
3321                         return -EBUSY;
3322
3323                 wdev_lock(wdev);
3324                 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
3325                              IEEE80211_MAX_MESH_ID_LEN);
3326                 wdev->mesh_id_up_len =
3327                         nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
3328                 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
3329                        wdev->mesh_id_up_len);
3330                 wdev_unlock(wdev);
3331         }
3332
3333         if (info->attrs[NL80211_ATTR_4ADDR]) {
3334                 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
3335                 change = true;
3336                 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
3337                 if (err)
3338                         return err;
3339         } else {
3340                 params.use_4addr = -1;
3341         }
3342
3343         err = nl80211_parse_mon_options(rdev, ntype, info, &params);
3344         if (err < 0)
3345                 return err;
3346         if (err > 0)
3347                 change = true;
3348
3349         if (change)
3350                 err = cfg80211_change_iface(rdev, dev, ntype, &params);
3351         else
3352                 err = 0;
3353
3354         if (!err && params.use_4addr != -1)
3355                 dev->ieee80211_ptr->use_4addr = params.use_4addr;
3356
3357         if (change && !err) {
3358                 struct wireless_dev *wdev = dev->ieee80211_ptr;
3359
3360                 nl80211_notify_iface(rdev, wdev, NL80211_CMD_SET_INTERFACE);
3361         }
3362
3363         return err;
3364 }
3365
3366 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
3367 {
3368         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3369         struct vif_params params;
3370         struct wireless_dev *wdev;
3371         struct sk_buff *msg;
3372         int err;
3373         enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
3374
3375         /* to avoid failing a new interface creation due to pending removal */
3376         cfg80211_destroy_ifaces(rdev);
3377
3378         memset(&params, 0, sizeof(params));
3379
3380         if (!info->attrs[NL80211_ATTR_IFNAME])
3381                 return -EINVAL;
3382
3383         if (info->attrs[NL80211_ATTR_IFTYPE])
3384                 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
3385
3386         if (!rdev->ops->add_virtual_intf ||
3387             !(rdev->wiphy.interface_modes & (1 << type)))
3388                 return -EOPNOTSUPP;
3389
3390         if ((type == NL80211_IFTYPE_P2P_DEVICE || type == NL80211_IFTYPE_NAN ||
3391              rdev->wiphy.features & NL80211_FEATURE_MAC_ON_CREATE) &&
3392             info->attrs[NL80211_ATTR_MAC]) {
3393                 nla_memcpy(params.macaddr, info->attrs[NL80211_ATTR_MAC],
3394                            ETH_ALEN);
3395                 if (!is_valid_ether_addr(params.macaddr))
3396                         return -EADDRNOTAVAIL;
3397         }
3398
3399         if (info->attrs[NL80211_ATTR_4ADDR]) {
3400                 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
3401                 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
3402                 if (err)
3403                         return err;
3404         }
3405
3406         err = nl80211_parse_mon_options(rdev, type, info, &params);
3407         if (err < 0)
3408                 return err;
3409
3410         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3411         if (!msg)
3412                 return -ENOMEM;
3413
3414         wdev = rdev_add_virtual_intf(rdev,
3415                                 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
3416                                 NET_NAME_USER, type, &params);
3417         if (WARN_ON(!wdev)) {
3418                 nlmsg_free(msg);
3419                 return -EPROTO;
3420         } else if (IS_ERR(wdev)) {
3421                 nlmsg_free(msg);
3422                 return PTR_ERR(wdev);
3423         }
3424
3425         if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
3426                 wdev->owner_nlportid = info->snd_portid;
3427
3428         switch (type) {
3429         case NL80211_IFTYPE_MESH_POINT:
3430                 if (!info->attrs[NL80211_ATTR_MESH_ID])
3431                         break;
3432                 wdev_lock(wdev);
3433                 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
3434                              IEEE80211_MAX_MESH_ID_LEN);
3435                 wdev->mesh_id_up_len =
3436                         nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
3437                 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
3438                        wdev->mesh_id_up_len);
3439                 wdev_unlock(wdev);
3440                 break;
3441         case NL80211_IFTYPE_NAN:
3442         case NL80211_IFTYPE_P2P_DEVICE:
3443                 /*
3444                  * P2P Device and NAN do not have a netdev, so don't go
3445                  * through the netdev notifier and must be added here
3446                  */
3447                 cfg80211_init_wdev(rdev, wdev);
3448                 break;
3449         default:
3450                 break;
3451         }
3452
3453         if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
3454                                rdev, wdev, NL80211_CMD_NEW_INTERFACE) < 0) {
3455                 nlmsg_free(msg);
3456                 return -ENOBUFS;
3457         }
3458
3459         return genlmsg_reply(msg, info);
3460 }
3461
3462 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
3463 {
3464         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3465         struct wireless_dev *wdev = info->user_ptr[1];
3466
3467         if (!rdev->ops->del_virtual_intf)
3468                 return -EOPNOTSUPP;
3469
3470         /*
3471          * If we remove a wireless device without a netdev then clear
3472          * user_ptr[1] so that nl80211_post_doit won't dereference it
3473          * to check if it needs to do dev_put(). Otherwise it crashes
3474          * since the wdev has been freed, unlike with a netdev where
3475          * we need the dev_put() for the netdev to really be freed.
3476          */
3477         if (!wdev->netdev)
3478                 info->user_ptr[1] = NULL;
3479
3480         return rdev_del_virtual_intf(rdev, wdev);
3481 }
3482
3483 static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info)
3484 {
3485         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3486         struct net_device *dev = info->user_ptr[1];
3487         u16 noack_map;
3488
3489         if (!info->attrs[NL80211_ATTR_NOACK_MAP])
3490                 return -EINVAL;
3491
3492         if (!rdev->ops->set_noack_map)
3493                 return -EOPNOTSUPP;
3494
3495         noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]);
3496
3497         return rdev_set_noack_map(rdev, dev, noack_map);
3498 }
3499
3500 struct get_key_cookie {
3501         struct sk_buff *msg;
3502         int error;
3503         int idx;
3504 };
3505
3506 static void get_key_callback(void *c, struct key_params *params)
3507 {
3508         struct nlattr *key;
3509         struct get_key_cookie *cookie = c;
3510
3511         if ((params->key &&
3512              nla_put(cookie->msg, NL80211_ATTR_KEY_DATA,
3513                      params->key_len, params->key)) ||
3514             (params->seq &&
3515              nla_put(cookie->msg, NL80211_ATTR_KEY_SEQ,
3516                      params->seq_len, params->seq)) ||
3517             (params->cipher &&
3518              nla_put_u32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
3519                          params->cipher)))
3520                 goto nla_put_failure;
3521
3522         key = nla_nest_start(cookie->msg, NL80211_ATTR_KEY);
3523         if (!key)
3524                 goto nla_put_failure;
3525
3526         if ((params->key &&
3527              nla_put(cookie->msg, NL80211_KEY_DATA,
3528                      params->key_len, params->key)) ||
3529             (params->seq &&
3530              nla_put(cookie->msg, NL80211_KEY_SEQ,
3531                      params->seq_len, params->seq)) ||
3532             (params->cipher &&
3533              nla_put_u32(cookie->msg, NL80211_KEY_CIPHER,
3534                          params->cipher)))
3535                 goto nla_put_failure;
3536
3537         if (nla_put_u8(cookie->msg, NL80211_KEY_IDX, cookie->idx))
3538                 goto nla_put_failure;
3539
3540         nla_nest_end(cookie->msg, key);
3541
3542         return;
3543  nla_put_failure:
3544         cookie->error = 1;
3545 }
3546
3547 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
3548 {
3549         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3550         int err;
3551         struct net_device *dev = info->user_ptr[1];
3552         u8 key_idx = 0;
3553         const u8 *mac_addr = NULL;
3554         bool pairwise;
3555         struct get_key_cookie cookie = {
3556                 .error = 0,
3557         };
3558         void *hdr;
3559         struct sk_buff *msg;
3560
3561         if (info->attrs[NL80211_ATTR_KEY_IDX])
3562                 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
3563
3564         if (info->attrs[NL80211_ATTR_MAC])
3565                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3566
3567         pairwise = !!mac_addr;
3568         if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
3569                 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
3570
3571                 if (kt != NL80211_KEYTYPE_GROUP &&
3572                     kt != NL80211_KEYTYPE_PAIRWISE)
3573                         return -EINVAL;
3574                 pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
3575         }
3576
3577         if (!rdev->ops->get_key)
3578                 return -EOPNOTSUPP;
3579
3580         if (!pairwise && mac_addr && !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
3581                 return -ENOENT;
3582
3583         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3584         if (!msg)
3585                 return -ENOMEM;
3586
3587         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
3588                              NL80211_CMD_NEW_KEY);
3589         if (!hdr)
3590                 goto nla_put_failure;
3591
3592         cookie.msg = msg;
3593         cookie.idx = key_idx;
3594
3595         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3596             nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx))
3597                 goto nla_put_failure;
3598         if (mac_addr &&
3599             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
3600                 goto nla_put_failure;
3601
3602         err = rdev_get_key(rdev, dev, key_idx, pairwise, mac_addr, &cookie,
3603                            get_key_callback);
3604
3605         if (err)
3606                 goto free_msg;
3607
3608         if (cookie.error)
3609                 goto nla_put_failure;
3610
3611         genlmsg_end(msg, hdr);
3612         return genlmsg_reply(msg, info);
3613
3614  nla_put_failure:
3615         err = -ENOBUFS;
3616  free_msg:
3617         nlmsg_free(msg);
3618         return err;
3619 }
3620
3621 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
3622 {
3623         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3624         struct key_parse key;
3625         int err;
3626         struct net_device *dev = info->user_ptr[1];
3627
3628         err = nl80211_parse_key(info, &key);
3629         if (err)
3630                 return err;
3631
3632         if (key.idx < 0)
3633                 return -EINVAL;
3634
3635         /* only support setting default key */
3636         if (!key.def && !key.defmgmt)
3637                 return -EINVAL;
3638
3639         wdev_lock(dev->ieee80211_ptr);
3640
3641         if (key.def) {
3642                 if (!rdev->ops->set_default_key) {
3643                         err = -EOPNOTSUPP;
3644                         goto out;
3645                 }
3646
3647                 err = nl80211_key_allowed(dev->ieee80211_ptr);
3648                 if (err)
3649                         goto out;
3650
3651                 err = rdev_set_default_key(rdev, dev, key.idx,
3652                                                  key.def_uni, key.def_multi);
3653
3654                 if (err)
3655                         goto out;
3656
3657 #ifdef CONFIG_CFG80211_WEXT
3658                 dev->ieee80211_ptr->wext.default_key = key.idx;
3659 #endif
3660         } else {
3661                 if (key.def_uni || !key.def_multi) {
3662                         err = -EINVAL;
3663                         goto out;
3664                 }
3665
3666                 if (!rdev->ops->set_default_mgmt_key) {
3667                         err = -EOPNOTSUPP;
3668                         goto out;
3669                 }
3670
3671                 err = nl80211_key_allowed(dev->ieee80211_ptr);
3672                 if (err)
3673                         goto out;
3674
3675                 err = rdev_set_default_mgmt_key(rdev, dev, key.idx);
3676                 if (err)
3677                         goto out;
3678
3679 #ifdef CONFIG_CFG80211_WEXT
3680                 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx;
3681 #endif
3682         }
3683
3684  out:
3685         wdev_unlock(dev->ieee80211_ptr);
3686
3687         return err;
3688 }
3689
3690 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
3691 {
3692         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3693         int err;
3694         struct net_device *dev = info->user_ptr[1];
3695         struct key_parse key;
3696         const u8 *mac_addr = NULL;
3697
3698         err = nl80211_parse_key(info, &key);
3699         if (err)
3700                 return err;
3701
3702         if (!key.p.key)
3703                 return -EINVAL;
3704
3705         if (info->attrs[NL80211_ATTR_MAC])
3706                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3707
3708         if (key.type == -1) {
3709                 if (mac_addr)
3710                         key.type = NL80211_KEYTYPE_PAIRWISE;
3711                 else
3712                         key.type = NL80211_KEYTYPE_GROUP;
3713         }
3714
3715         /* for now */
3716         if (key.type != NL80211_KEYTYPE_PAIRWISE &&
3717             key.type != NL80211_KEYTYPE_GROUP)
3718                 return -EINVAL;
3719
3720         if (!rdev->ops->add_key)
3721                 return -EOPNOTSUPP;
3722
3723         if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
3724                                            key.type == NL80211_KEYTYPE_PAIRWISE,
3725                                            mac_addr))
3726                 return -EINVAL;
3727
3728         wdev_lock(dev->ieee80211_ptr);
3729         err = nl80211_key_allowed(dev->ieee80211_ptr);
3730         if (!err)
3731                 err = rdev_add_key(rdev, dev, key.idx,
3732                                    key.type == NL80211_KEYTYPE_PAIRWISE,
3733                                     mac_addr, &key.p);
3734         wdev_unlock(dev->ieee80211_ptr);
3735
3736         return err;
3737 }
3738
3739 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
3740 {
3741         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3742         int err;
3743         struct net_device *dev = info->user_ptr[1];
3744         u8 *mac_addr = NULL;
3745         struct key_parse key;
3746
3747         err = nl80211_parse_key(info, &key);
3748         if (err)
3749                 return err;
3750
3751         if (info->attrs[NL80211_ATTR_MAC])
3752                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3753
3754         if (key.type == -1) {
3755                 if (mac_addr)
3756                         key.type = NL80211_KEYTYPE_PAIRWISE;
3757                 else
3758                         key.type = NL80211_KEYTYPE_GROUP;
3759         }
3760
3761         /* for now */
3762         if (key.type != NL80211_KEYTYPE_PAIRWISE &&
3763             key.type != NL80211_KEYTYPE_GROUP)
3764                 return -EINVAL;
3765
3766         if (!rdev->ops->del_key)
3767                 return -EOPNOTSUPP;
3768
3769         wdev_lock(dev->ieee80211_ptr);
3770         err = nl80211_key_allowed(dev->ieee80211_ptr);
3771
3772         if (key.type == NL80211_KEYTYPE_GROUP && mac_addr &&
3773             !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
3774                 err = -ENOENT;
3775
3776         if (!err)
3777                 err = rdev_del_key(rdev, dev, key.idx,
3778                                    key.type == NL80211_KEYTYPE_PAIRWISE,
3779                                    mac_addr);
3780
3781 #ifdef CONFIG_CFG80211_WEXT
3782         if (!err) {
3783                 if (key.idx == dev->ieee80211_ptr->wext.default_key)
3784                         dev->ieee80211_ptr->wext.default_key = -1;
3785                 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key)
3786                         dev->ieee80211_ptr->wext.default_mgmt_key = -1;
3787         }
3788 #endif
3789         wdev_unlock(dev->ieee80211_ptr);
3790
3791         return err;
3792 }
3793
3794 /* This function returns an error or the number of nested attributes */
3795 static int validate_acl_mac_addrs(struct nlattr *nl_attr)
3796 {
3797         struct nlattr *attr;
3798         int n_entries = 0, tmp;
3799
3800         nla_for_each_nested(attr, nl_attr, tmp) {
3801                 if (nla_len(attr) != ETH_ALEN)
3802                         return -EINVAL;
3803
3804                 n_entries++;
3805         }
3806
3807         return n_entries;
3808 }
3809
3810 /*
3811  * This function parses ACL information and allocates memory for ACL data.
3812  * On successful return, the calling function is responsible to free the
3813  * ACL buffer returned by this function.
3814  */
3815 static struct cfg80211_acl_data *parse_acl_data(struct wiphy *wiphy,
3816                                                 struct genl_info *info)
3817 {
3818         enum nl80211_acl_policy acl_policy;
3819         struct nlattr *attr;
3820         struct cfg80211_acl_data *acl;
3821         int i = 0, n_entries, tmp;
3822
3823         if (!wiphy->max_acl_mac_addrs)
3824                 return ERR_PTR(-EOPNOTSUPP);
3825
3826         if (!info->attrs[NL80211_ATTR_ACL_POLICY])
3827                 return ERR_PTR(-EINVAL);
3828
3829         acl_policy = nla_get_u32(info->attrs[NL80211_ATTR_ACL_POLICY]);
3830         if (acl_policy != NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED &&
3831             acl_policy != NL80211_ACL_POLICY_DENY_UNLESS_LISTED)
3832                 return ERR_PTR(-EINVAL);
3833
3834         if (!info->attrs[NL80211_ATTR_MAC_ADDRS])
3835                 return ERR_PTR(-EINVAL);
3836
3837         n_entries = validate_acl_mac_addrs(info->attrs[NL80211_ATTR_MAC_ADDRS]);
3838         if (n_entries < 0)
3839                 return ERR_PTR(n_entries);
3840
3841         if (n_entries > wiphy->max_acl_mac_addrs)
3842                 return ERR_PTR(-ENOTSUPP);
3843
3844         acl = kzalloc(sizeof(*acl) + (sizeof(struct mac_address) * n_entries),
3845                       GFP_KERNEL);
3846         if (!acl)
3847                 return ERR_PTR(-ENOMEM);
3848
3849         nla_for_each_nested(attr, info->attrs[NL80211_ATTR_MAC_ADDRS], tmp) {
3850                 memcpy(acl->mac_addrs[i].addr, nla_data(attr), ETH_ALEN);
3851                 i++;
3852         }
3853
3854         acl->n_acl_entries = n_entries;
3855         acl->acl_policy = acl_policy;
3856
3857         return acl;
3858 }
3859
3860 static int nl80211_set_mac_acl(struct sk_buff *skb, struct genl_info *info)
3861 {
3862         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3863         struct net_device *dev = info->user_ptr[1];
3864         struct cfg80211_acl_data *acl;
3865         int err;
3866
3867         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3868             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3869                 return -EOPNOTSUPP;
3870
3871         if (!dev->ieee80211_ptr->beacon_interval)
3872                 return -EINVAL;
3873
3874         acl = parse_acl_data(&rdev->wiphy, info);
3875         if (IS_ERR(acl))
3876                 return PTR_ERR(acl);
3877
3878         err = rdev_set_mac_acl(rdev, dev, acl);
3879
3880         kfree(acl);
3881
3882         return err;
3883 }
3884
3885 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
3886                            u8 *rates, u8 rates_len)
3887 {
3888         u8 i;
3889         u32 mask = 0;
3890
3891         for (i = 0; i < rates_len; i++) {
3892                 int rate = (rates[i] & 0x7f) * 5;
3893                 int ridx;
3894
3895                 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
3896                         struct ieee80211_rate *srate =
3897                                 &sband->bitrates[ridx];
3898                         if (rate == srate->bitrate) {
3899                                 mask |= 1 << ridx;
3900                                 break;
3901                         }
3902                 }
3903                 if (ridx == sband->n_bitrates)
3904                         return 0; /* rate not found */
3905         }
3906
3907         return mask;
3908 }
3909
3910 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband,
3911                                u8 *rates, u8 rates_len,
3912                                u8 mcs[IEEE80211_HT_MCS_MASK_LEN])
3913 {
3914         u8 i;
3915
3916         memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN);
3917
3918         for (i = 0; i < rates_len; i++) {
3919                 int ridx, rbit;
3920
3921                 ridx = rates[i] / 8;
3922                 rbit = BIT(rates[i] % 8);
3923
3924                 /* check validity */
3925                 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN))
3926                         return false;
3927
3928                 /* check availability */
3929                 ridx = array_index_nospec(ridx, IEEE80211_HT_MCS_MASK_LEN);
3930                 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit)
3931                         mcs[ridx] |= rbit;
3932                 else
3933                         return false;
3934         }
3935
3936         return true;
3937 }
3938
3939 static u16 vht_mcs_map_to_mcs_mask(u8 vht_mcs_map)
3940 {
3941         u16 mcs_mask = 0;
3942
3943         switch (vht_mcs_map) {
3944         case IEEE80211_VHT_MCS_NOT_SUPPORTED:
3945                 break;
3946         case IEEE80211_VHT_MCS_SUPPORT_0_7:
3947                 mcs_mask = 0x00FF;
3948                 break;
3949         case IEEE80211_VHT_MCS_SUPPORT_0_8:
3950                 mcs_mask = 0x01FF;
3951                 break;
3952         case IEEE80211_VHT_MCS_SUPPORT_0_9:
3953                 mcs_mask = 0x03FF;
3954                 break;
3955         default:
3956                 break;
3957         }
3958
3959         return mcs_mask;
3960 }
3961
3962 static void vht_build_mcs_mask(u16 vht_mcs_map,
3963                                u16 vht_mcs_mask[NL80211_VHT_NSS_MAX])
3964 {
3965         u8 nss;
3966
3967         for (nss = 0; nss < NL80211_VHT_NSS_MAX; nss++) {
3968                 vht_mcs_mask[nss] = vht_mcs_map_to_mcs_mask(vht_mcs_map & 0x03);
3969                 vht_mcs_map >>= 2;
3970         }
3971 }
3972
3973 static bool vht_set_mcs_mask(struct ieee80211_supported_band *sband,
3974                              struct nl80211_txrate_vht *txrate,
3975                              u16 mcs[NL80211_VHT_NSS_MAX])
3976 {
3977         u16 tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
3978         u16 tx_mcs_mask[NL80211_VHT_NSS_MAX] = {};
3979         u8 i;
3980
3981         if (!sband->vht_cap.vht_supported)
3982                 return false;
3983
3984         memset(mcs, 0, sizeof(u16) * NL80211_VHT_NSS_MAX);
3985
3986         /* Build vht_mcs_mask from VHT capabilities */
3987         vht_build_mcs_mask(tx_mcs_map, tx_mcs_mask);
3988
3989         for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
3990                 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i])
3991                         mcs[i] = txrate->mcs[i];
3992                 else
3993                         return false;
3994         }
3995
3996         return true;
3997 }
3998
3999 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
4000         [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
4001                                     .len = NL80211_MAX_SUPP_RATES },
4002         [NL80211_TXRATE_HT] = { .type = NLA_BINARY,
4003                                 .len = NL80211_MAX_SUPP_HT_RATES },
4004         [NL80211_TXRATE_VHT] = { .len = sizeof(struct nl80211_txrate_vht)},
4005         [NL80211_TXRATE_GI] = { .type = NLA_U8 },
4006 };
4007
4008 static int nl80211_parse_tx_bitrate_mask(struct genl_info *info,
4009                                          struct cfg80211_bitrate_mask *mask)
4010 {
4011         struct nlattr *tb[NL80211_TXRATE_MAX + 1];
4012         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4013         int rem, i;
4014         struct nlattr *tx_rates;
4015         struct ieee80211_supported_band *sband;
4016         u16 vht_tx_mcs_map;
4017
4018         memset(mask, 0, sizeof(*mask));
4019         /* Default to all rates enabled */
4020         for (i = 0; i < NUM_NL80211_BANDS; i++) {
4021                 sband = rdev->wiphy.bands[i];
4022
4023                 if (!sband)
4024                         continue;
4025
4026                 mask->control[i].legacy = (1 << sband->n_bitrates) - 1;
4027                 memcpy(mask->control[i].ht_mcs,
4028                        sband->ht_cap.mcs.rx_mask,
4029                        sizeof(mask->control[i].ht_mcs));
4030
4031                 if (!sband->vht_cap.vht_supported)
4032                         continue;
4033
4034                 vht_tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
4035                 vht_build_mcs_mask(vht_tx_mcs_map, mask->control[i].vht_mcs);
4036         }
4037
4038         /* if no rates are given set it back to the defaults */
4039         if (!info->attrs[NL80211_ATTR_TX_RATES])
4040                 goto out;
4041
4042         /* The nested attribute uses enum nl80211_band as the index. This maps
4043          * directly to the enum nl80211_band values used in cfg80211.
4044          */
4045         BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8);
4046         nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem) {
4047                 enum nl80211_band band = nla_type(tx_rates);
4048                 int err;
4049
4050                 if (band < 0 || band >= NUM_NL80211_BANDS)
4051                         return -EINVAL;
4052                 sband = rdev->wiphy.bands[band];
4053                 if (sband == NULL)
4054                         return -EINVAL;
4055                 err = nla_parse_nested(tb, NL80211_TXRATE_MAX, tx_rates,
4056                                        nl80211_txattr_policy, info->extack);
4057                 if (err)
4058                         return err;
4059                 if (tb[NL80211_TXRATE_LEGACY]) {
4060                         mask->control[band].legacy = rateset_to_mask(
4061                                 sband,
4062                                 nla_data(tb[NL80211_TXRATE_LEGACY]),
4063                                 nla_len(tb[NL80211_TXRATE_LEGACY]));
4064                         if ((mask->control[band].legacy == 0) &&
4065                             nla_len(tb[NL80211_TXRATE_LEGACY]))
4066                                 return -EINVAL;
4067                 }
4068                 if (tb[NL80211_TXRATE_HT]) {
4069                         if (!ht_rateset_to_mask(
4070                                         sband,
4071                                         nla_data(tb[NL80211_TXRATE_HT]),
4072                                         nla_len(tb[NL80211_TXRATE_HT]),
4073                                         mask->control[band].ht_mcs))
4074                                 return -EINVAL;
4075                 }
4076                 if (tb[NL80211_TXRATE_VHT]) {
4077                         if (!vht_set_mcs_mask(
4078                                         sband,
4079                                         nla_data(tb[NL80211_TXRATE_VHT]),
4080                                         mask->control[band].vht_mcs))
4081                                 return -EINVAL;
4082                 }
4083                 if (tb[NL80211_TXRATE_GI]) {
4084                         mask->control[band].gi =
4085                                 nla_get_u8(tb[NL80211_TXRATE_GI]);
4086                         if (mask->control[band].gi > NL80211_TXRATE_FORCE_LGI)
4087                                 return -EINVAL;
4088                 }
4089
4090                 if (mask->control[band].legacy == 0) {
4091                         /* don't allow empty legacy rates if HT or VHT
4092                          * are not even supported.
4093                          */
4094                         if (!(rdev->wiphy.bands[band]->ht_cap.ht_supported ||
4095                               rdev->wiphy.bands[band]->vht_cap.vht_supported))
4096                                 return -EINVAL;
4097
4098                         for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
4099                                 if (mask->control[band].ht_mcs[i])
4100                                         goto out;
4101
4102                         for (i = 0; i < NL80211_VHT_NSS_MAX; i++)
4103                                 if (mask->control[band].vht_mcs[i])
4104                                         goto out;
4105
4106                         /* legacy and mcs rates may not be both empty */
4107                         return -EINVAL;
4108                 }
4109         }
4110
4111 out:
4112         return 0;
4113 }
4114
4115 static int validate_beacon_tx_rate(struct cfg80211_registered_device *rdev,
4116                                    enum nl80211_band band,
4117                                    struct cfg80211_bitrate_mask *beacon_rate)
4118 {
4119         u32 count_ht, count_vht, i;
4120         u32 rate = beacon_rate->control[band].legacy;
4121
4122         /* Allow only one rate */
4123         if (hweight32(rate) > 1)
4124                 return -EINVAL;
4125
4126         count_ht = 0;
4127         for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++) {
4128                 if (hweight8(beacon_rate->control[band].ht_mcs[i]) > 1) {
4129                         return -EINVAL;
4130                 } else if (beacon_rate->control[band].ht_mcs[i]) {
4131                         count_ht++;
4132                         if (count_ht > 1)
4133                                 return -EINVAL;
4134                 }
4135                 if (count_ht && rate)
4136                         return -EINVAL;
4137         }
4138
4139         count_vht = 0;
4140         for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
4141                 if (hweight16(beacon_rate->control[band].vht_mcs[i]) > 1) {
4142                         return -EINVAL;
4143                 } else if (beacon_rate->control[band].vht_mcs[i]) {
4144                         count_vht++;
4145                         if (count_vht > 1)
4146                                 return -EINVAL;
4147                 }
4148                 if (count_vht && rate)
4149                         return -EINVAL;
4150         }
4151
4152         if ((count_ht && count_vht) || (!rate && !count_ht && !count_vht))
4153                 return -EINVAL;
4154
4155         if (rate &&
4156             !wiphy_ext_feature_isset(&rdev->wiphy,
4157                                      NL80211_EXT_FEATURE_BEACON_RATE_LEGACY))
4158                 return -EINVAL;
4159         if (count_ht &&
4160             !wiphy_ext_feature_isset(&rdev->wiphy,
4161                                      NL80211_EXT_FEATURE_BEACON_RATE_HT))
4162                 return -EINVAL;
4163         if (count_vht &&
4164             !wiphy_ext_feature_isset(&rdev->wiphy,
4165                                      NL80211_EXT_FEATURE_BEACON_RATE_VHT))
4166                 return -EINVAL;
4167
4168         return 0;
4169 }
4170
4171 static int nl80211_parse_beacon(struct cfg80211_registered_device *rdev,
4172                                 struct nlattr *attrs[],
4173                                 struct cfg80211_beacon_data *bcn)
4174 {
4175         bool haveinfo = false;
4176         int err;
4177
4178         memset(bcn, 0, sizeof(*bcn));
4179
4180         if (attrs[NL80211_ATTR_BEACON_HEAD]) {
4181                 bcn->head = nla_data(attrs[NL80211_ATTR_BEACON_HEAD]);
4182                 bcn->head_len = nla_len(attrs[NL80211_ATTR_BEACON_HEAD]);
4183                 if (!bcn->head_len)
4184                         return -EINVAL;
4185                 haveinfo = true;
4186         }
4187
4188         if (attrs[NL80211_ATTR_BEACON_TAIL]) {
4189                 bcn->tail = nla_data(attrs[NL80211_ATTR_BEACON_TAIL]);
4190                 bcn->tail_len = nla_len(attrs[NL80211_ATTR_BEACON_TAIL]);
4191                 haveinfo = true;
4192         }
4193
4194         if (!haveinfo)
4195                 return -EINVAL;
4196
4197         if (attrs[NL80211_ATTR_IE]) {
4198                 bcn->beacon_ies = nla_data(attrs[NL80211_ATTR_IE]);
4199                 bcn->beacon_ies_len = nla_len(attrs[NL80211_ATTR_IE]);
4200         }
4201
4202         if (attrs[NL80211_ATTR_IE_PROBE_RESP]) {
4203                 bcn->proberesp_ies =
4204                         nla_data(attrs[NL80211_ATTR_IE_PROBE_RESP]);
4205                 bcn->proberesp_ies_len =
4206                         nla_len(attrs[NL80211_ATTR_IE_PROBE_RESP]);
4207         }
4208
4209         if (attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
4210                 bcn->assocresp_ies =
4211                         nla_data(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
4212                 bcn->assocresp_ies_len =
4213                         nla_len(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
4214         }
4215
4216         if (attrs[NL80211_ATTR_PROBE_RESP]) {
4217                 bcn->probe_resp = nla_data(attrs[NL80211_ATTR_PROBE_RESP]);
4218                 bcn->probe_resp_len = nla_len(attrs[NL80211_ATTR_PROBE_RESP]);
4219         }
4220
4221         if (attrs[NL80211_ATTR_FTM_RESPONDER]) {
4222                 struct nlattr *tb[NL80211_FTM_RESP_ATTR_MAX + 1];
4223
4224                 err = nla_parse_nested(tb, NL80211_FTM_RESP_ATTR_MAX,
4225                                        attrs[NL80211_ATTR_FTM_RESPONDER],
4226                                        NULL, NULL);
4227                 if (err)
4228                         return err;
4229
4230                 if (tb[NL80211_FTM_RESP_ATTR_ENABLED] &&
4231                     wiphy_ext_feature_isset(&rdev->wiphy,
4232                                             NL80211_EXT_FEATURE_ENABLE_FTM_RESPONDER))
4233                         bcn->ftm_responder = 1;
4234                 else
4235                         return -EOPNOTSUPP;
4236
4237                 if (tb[NL80211_FTM_RESP_ATTR_LCI]) {
4238                         bcn->lci = nla_data(tb[NL80211_FTM_RESP_ATTR_LCI]);
4239                         bcn->lci_len = nla_len(tb[NL80211_FTM_RESP_ATTR_LCI]);
4240                 }
4241
4242                 if (tb[NL80211_FTM_RESP_ATTR_CIVICLOC]) {
4243                         bcn->civicloc = nla_data(tb[NL80211_FTM_RESP_ATTR_CIVICLOC]);
4244                         bcn->civicloc_len = nla_len(tb[NL80211_FTM_RESP_ATTR_CIVICLOC]);
4245                 }
4246         } else {
4247                 bcn->ftm_responder = -1;
4248         }
4249
4250         return 0;
4251 }
4252
4253 static void nl80211_check_ap_rate_selectors(struct cfg80211_ap_settings *params,
4254                                             const u8 *rates)
4255 {
4256         int i;
4257
4258         if (!rates)
4259                 return;
4260
4261         for (i = 0; i < rates[1]; i++) {
4262                 if (rates[2 + i] == BSS_MEMBERSHIP_SELECTOR_HT_PHY)
4263                         params->ht_required = true;
4264                 if (rates[2 + i] == BSS_MEMBERSHIP_SELECTOR_VHT_PHY)
4265                         params->vht_required = true;
4266         }
4267 }
4268
4269 /*
4270  * Since the nl80211 API didn't include, from the beginning, attributes about
4271  * HT/VHT requirements/capabilities, we parse them out of the IEs for the
4272  * benefit of drivers that rebuild IEs in the firmware.
4273  */
4274 static void nl80211_calculate_ap_params(struct cfg80211_ap_settings *params)
4275 {
4276         const struct cfg80211_beacon_data *bcn = &params->beacon;
4277         size_t ies_len = bcn->tail_len;
4278         const u8 *ies = bcn->tail;
4279         const u8 *rates;
4280         const u8 *cap;
4281
4282         rates = cfg80211_find_ie(WLAN_EID_SUPP_RATES, ies, ies_len);
4283         nl80211_check_ap_rate_selectors(params, rates);
4284
4285         rates = cfg80211_find_ie(WLAN_EID_EXT_SUPP_RATES, ies, ies_len);
4286         nl80211_check_ap_rate_selectors(params, rates);
4287
4288         cap = cfg80211_find_ie(WLAN_EID_HT_CAPABILITY, ies, ies_len);
4289         if (cap && cap[1] >= sizeof(*params->ht_cap))
4290                 params->ht_cap = (void *)(cap + 2);
4291         cap = cfg80211_find_ie(WLAN_EID_VHT_CAPABILITY, ies, ies_len);
4292         if (cap && cap[1] >= sizeof(*params->vht_cap))
4293                 params->vht_cap = (void *)(cap + 2);
4294         cap = cfg80211_find_ext_ie(WLAN_EID_EXT_HE_CAPABILITY, ies, ies_len);
4295         if (cap && cap[1] >= sizeof(*params->he_cap) + 1)
4296                 params->he_cap = (void *)(cap + 3);
4297 }
4298
4299 static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev,
4300                                    struct cfg80211_ap_settings *params)
4301 {
4302         struct wireless_dev *wdev;
4303         bool ret = false;
4304
4305         list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
4306                 if (wdev->iftype != NL80211_IFTYPE_AP &&
4307                     wdev->iftype != NL80211_IFTYPE_P2P_GO)
4308                         continue;
4309
4310                 if (!wdev->preset_chandef.chan)
4311                         continue;
4312
4313                 params->chandef = wdev->preset_chandef;
4314                 ret = true;
4315                 break;
4316         }
4317
4318         return ret;
4319 }
4320
4321 static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev,
4322                                     enum nl80211_auth_type auth_type,
4323                                     enum nl80211_commands cmd)
4324 {
4325         if (auth_type > NL80211_AUTHTYPE_MAX)
4326                 return false;
4327
4328         switch (cmd) {
4329         case NL80211_CMD_AUTHENTICATE:
4330                 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
4331                     auth_type == NL80211_AUTHTYPE_SAE)
4332                         return false;
4333                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
4334                                              NL80211_EXT_FEATURE_FILS_STA) &&
4335                     (auth_type == NL80211_AUTHTYPE_FILS_SK ||
4336                      auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
4337                      auth_type == NL80211_AUTHTYPE_FILS_PK))
4338                         return false;
4339                 return true;
4340         case NL80211_CMD_CONNECT:
4341                 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
4342                     auth_type == NL80211_AUTHTYPE_SAE)
4343                         return false;
4344
4345                 /* FILS with SK PFS or PK not supported yet */
4346                 if (auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
4347                     auth_type == NL80211_AUTHTYPE_FILS_PK)
4348                         return false;
4349                 if (!wiphy_ext_feature_isset(
4350                             &rdev->wiphy,
4351                             NL80211_EXT_FEATURE_FILS_SK_OFFLOAD) &&
4352                     auth_type == NL80211_AUTHTYPE_FILS_SK)
4353                         return false;
4354                 return true;
4355         case NL80211_CMD_START_AP:
4356                 /* SAE not supported yet */
4357                 if (auth_type == NL80211_AUTHTYPE_SAE)
4358                         return false;
4359                 /* FILS not supported yet */
4360                 if (auth_type == NL80211_AUTHTYPE_FILS_SK ||
4361                     auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
4362                     auth_type == NL80211_AUTHTYPE_FILS_PK)
4363                         return false;
4364                 return true;
4365         default:
4366                 return false;
4367         }
4368 }
4369
4370 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
4371 {
4372         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4373         struct net_device *dev = info->user_ptr[1];
4374         struct wireless_dev *wdev = dev->ieee80211_ptr;
4375         struct cfg80211_ap_settings params;
4376         int err;
4377
4378         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4379             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4380                 return -EOPNOTSUPP;
4381
4382         if (!rdev->ops->start_ap)
4383                 return -EOPNOTSUPP;
4384
4385         if (wdev->beacon_interval)
4386                 return -EALREADY;
4387
4388         memset(&params, 0, sizeof(params));
4389
4390         /* these are required for START_AP */
4391         if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
4392             !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
4393             !info->attrs[NL80211_ATTR_BEACON_HEAD])
4394                 return -EINVAL;
4395
4396         err = nl80211_parse_beacon(rdev, info->attrs, &params.beacon);
4397         if (err)
4398                 return err;
4399
4400         params.beacon_interval =
4401                 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
4402         params.dtim_period =
4403                 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
4404
4405         err = cfg80211_validate_beacon_int(rdev, dev->ieee80211_ptr->iftype,
4406                                            params.beacon_interval);
4407         if (err)
4408                 return err;
4409
4410         /*
4411          * In theory, some of these attributes should be required here
4412          * but since they were not used when the command was originally
4413          * added, keep them optional for old user space programs to let
4414          * them continue to work with drivers that do not need the
4415          * additional information -- drivers must check!
4416          */
4417         if (info->attrs[NL80211_ATTR_SSID]) {
4418                 params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
4419                 params.ssid_len =
4420                         nla_len(info->attrs[NL80211_ATTR_SSID]);
4421                 if (params.ssid_len == 0 ||
4422                     params.ssid_len > IEEE80211_MAX_SSID_LEN)
4423                         return -EINVAL;
4424         }
4425
4426         if (info->attrs[NL80211_ATTR_HIDDEN_SSID])
4427                 params.hidden_ssid = nla_get_u32(
4428                         info->attrs[NL80211_ATTR_HIDDEN_SSID]);
4429
4430         params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
4431
4432         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
4433                 params.auth_type = nla_get_u32(
4434                         info->attrs[NL80211_ATTR_AUTH_TYPE]);
4435                 if (!nl80211_valid_auth_type(rdev, params.auth_type,
4436                                              NL80211_CMD_START_AP))
4437                         return -EINVAL;
4438         } else
4439                 params.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
4440
4441         err = nl80211_crypto_settings(rdev, info, &params.crypto,
4442                                       NL80211_MAX_NR_CIPHER_SUITES);
4443         if (err)
4444                 return err;
4445
4446         if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) {
4447                 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER))
4448                         return -EOPNOTSUPP;
4449                 params.inactivity_timeout = nla_get_u16(
4450                         info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]);
4451         }
4452
4453         if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
4454                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4455                         return -EINVAL;
4456                 params.p2p_ctwindow =
4457                         nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
4458                 if (params.p2p_ctwindow != 0 &&
4459                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
4460                         return -EINVAL;
4461         }
4462
4463         if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
4464                 u8 tmp;
4465
4466                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4467                         return -EINVAL;
4468                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
4469                 params.p2p_opp_ps = tmp;
4470                 if (params.p2p_opp_ps != 0 &&
4471                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
4472                         return -EINVAL;
4473         }
4474
4475         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
4476                 err = nl80211_parse_chandef(rdev, info, &params.chandef);
4477                 if (err)
4478                         return err;
4479         } else if (wdev->preset_chandef.chan) {
4480                 params.chandef = wdev->preset_chandef;
4481         } else if (!nl80211_get_ap_channel(rdev, &params))
4482                 return -EINVAL;
4483
4484         if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params.chandef,
4485                                            wdev->iftype))
4486                 return -EINVAL;
4487
4488         if (info->attrs[NL80211_ATTR_TX_RATES]) {
4489                 err = nl80211_parse_tx_bitrate_mask(info, &params.beacon_rate);
4490                 if (err)
4491                         return err;
4492
4493                 err = validate_beacon_tx_rate(rdev, params.chandef.chan->band,
4494                                               &params.beacon_rate);
4495                 if (err)
4496                         return err;
4497         }
4498
4499         if (info->attrs[NL80211_ATTR_SMPS_MODE]) {
4500                 params.smps_mode =
4501                         nla_get_u8(info->attrs[NL80211_ATTR_SMPS_MODE]);
4502                 switch (params.smps_mode) {
4503                 case NL80211_SMPS_OFF:
4504                         break;
4505                 case NL80211_SMPS_STATIC:
4506                         if (!(rdev->wiphy.features &
4507                               NL80211_FEATURE_STATIC_SMPS))
4508                                 return -EINVAL;
4509                         break;
4510                 case NL80211_SMPS_DYNAMIC:
4511                         if (!(rdev->wiphy.features &
4512                               NL80211_FEATURE_DYNAMIC_SMPS))
4513                                 return -EINVAL;
4514                         break;
4515                 default:
4516                         return -EINVAL;
4517                 }
4518         } else {
4519                 params.smps_mode = NL80211_SMPS_OFF;
4520         }
4521
4522         params.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
4523         if (params.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ])
4524                 return -EOPNOTSUPP;
4525
4526         if (info->attrs[NL80211_ATTR_ACL_POLICY]) {
4527                 params.acl = parse_acl_data(&rdev->wiphy, info);
4528                 if (IS_ERR(params.acl))
4529                         return PTR_ERR(params.acl);
4530         }
4531
4532         nl80211_calculate_ap_params(&params);
4533
4534         wdev_lock(wdev);
4535         err = rdev_start_ap(rdev, dev, &params);
4536         if (!err) {
4537                 wdev->preset_chandef = params.chandef;
4538                 wdev->beacon_interval = params.beacon_interval;
4539                 wdev->chandef = params.chandef;
4540                 wdev->ssid_len = params.ssid_len;
4541                 memcpy(wdev->ssid, params.ssid, wdev->ssid_len);
4542
4543                 if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
4544                         wdev->conn_owner_nlportid = info->snd_portid;
4545         }
4546         wdev_unlock(wdev);
4547
4548         kfree(params.acl);
4549
4550         return err;
4551 }
4552
4553 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info)
4554 {
4555         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4556         struct net_device *dev = info->user_ptr[1];
4557         struct wireless_dev *wdev = dev->ieee80211_ptr;
4558         struct cfg80211_beacon_data params;
4559         int err;
4560
4561         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4562             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4563                 return -EOPNOTSUPP;
4564
4565         if (!rdev->ops->change_beacon)
4566                 return -EOPNOTSUPP;
4567
4568         if (!wdev->beacon_interval)
4569                 return -EINVAL;
4570
4571         err = nl80211_parse_beacon(rdev, info->attrs, &params);
4572         if (err)
4573                 return err;
4574
4575         wdev_lock(wdev);
4576         err = rdev_change_beacon(rdev, dev, &params);
4577         wdev_unlock(wdev);
4578
4579         return err;
4580 }
4581
4582 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info)
4583 {
4584         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4585         struct net_device *dev = info->user_ptr[1];
4586
4587         return cfg80211_stop_ap(rdev, dev, false);
4588 }
4589
4590 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
4591         [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
4592         [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
4593         [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
4594         [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
4595         [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
4596         [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG },
4597 };
4598
4599 static int parse_station_flags(struct genl_info *info,
4600                                enum nl80211_iftype iftype,
4601                                struct station_parameters *params)
4602 {
4603         struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
4604         struct nlattr *nla;
4605         int flag;
4606
4607         /*
4608          * Try parsing the new attribute first so userspace
4609          * can specify both for older kernels.
4610          */
4611         nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
4612         if (nla) {
4613                 struct nl80211_sta_flag_update *sta_flags;
4614
4615                 sta_flags = nla_data(nla);
4616                 params->sta_flags_mask = sta_flags->mask;
4617                 params->sta_flags_set = sta_flags->set;
4618                 params->sta_flags_set &= params->sta_flags_mask;
4619                 if ((params->sta_flags_mask |
4620                      params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
4621                         return -EINVAL;
4622                 return 0;
4623         }
4624
4625         /* if present, parse the old attribute */
4626
4627         nla = info->attrs[NL80211_ATTR_STA_FLAGS];
4628         if (!nla)
4629                 return 0;
4630
4631         if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX, nla,
4632                              sta_flags_policy, info->extack))
4633                 return -EINVAL;
4634
4635         /*
4636          * Only allow certain flags for interface types so that
4637          * other attributes are silently ignored. Remember that
4638          * this is backward compatibility code with old userspace
4639          * and shouldn't be hit in other cases anyway.
4640          */
4641         switch (iftype) {
4642         case NL80211_IFTYPE_AP:
4643         case NL80211_IFTYPE_AP_VLAN:
4644         case NL80211_IFTYPE_P2P_GO:
4645                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
4646                                          BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
4647                                          BIT(NL80211_STA_FLAG_WME) |
4648                                          BIT(NL80211_STA_FLAG_MFP);
4649                 break;
4650         case NL80211_IFTYPE_P2P_CLIENT:
4651         case NL80211_IFTYPE_STATION:
4652                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
4653                                          BIT(NL80211_STA_FLAG_TDLS_PEER);
4654                 break;
4655         case NL80211_IFTYPE_MESH_POINT:
4656                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4657                                          BIT(NL80211_STA_FLAG_MFP) |
4658                                          BIT(NL80211_STA_FLAG_AUTHORIZED);
4659                 break;
4660         default:
4661                 return -EINVAL;
4662         }
4663
4664         for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) {
4665                 if (flags[flag]) {
4666                         params->sta_flags_set |= (1<<flag);
4667
4668                         /* no longer support new API additions in old API */
4669                         if (flag > NL80211_STA_FLAG_MAX_OLD_API)
4670                                 return -EINVAL;
4671                 }
4672         }
4673
4674         return 0;
4675 }
4676
4677 bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info, int attr)
4678 {
4679         struct nlattr *rate;
4680         u32 bitrate;
4681         u16 bitrate_compat;
4682         enum nl80211_rate_info rate_flg;
4683
4684         rate = nla_nest_start(msg, attr);
4685         if (!rate)
4686                 return false;
4687
4688         /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
4689         bitrate = cfg80211_calculate_bitrate(info);
4690         /* report 16-bit bitrate only if we can */
4691         bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0;
4692         if (bitrate > 0 &&
4693             nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate))
4694                 return false;
4695         if (bitrate_compat > 0 &&
4696             nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat))
4697                 return false;
4698
4699         switch (info->bw) {
4700         case RATE_INFO_BW_5:
4701                 rate_flg = NL80211_RATE_INFO_5_MHZ_WIDTH;
4702                 break;
4703         case RATE_INFO_BW_10:
4704                 rate_flg = NL80211_RATE_INFO_10_MHZ_WIDTH;
4705                 break;
4706         default:
4707                 WARN_ON(1);
4708                 /* fall through */
4709         case RATE_INFO_BW_20:
4710                 rate_flg = 0;
4711                 break;
4712         case RATE_INFO_BW_40:
4713                 rate_flg = NL80211_RATE_INFO_40_MHZ_WIDTH;
4714                 break;
4715         case RATE_INFO_BW_80:
4716                 rate_flg = NL80211_RATE_INFO_80_MHZ_WIDTH;
4717                 break;
4718         case RATE_INFO_BW_160:
4719                 rate_flg = NL80211_RATE_INFO_160_MHZ_WIDTH;
4720                 break;
4721         case RATE_INFO_BW_HE_RU:
4722                 rate_flg = 0;
4723                 WARN_ON(!(info->flags & RATE_INFO_FLAGS_HE_MCS));
4724         }
4725
4726         if (rate_flg && nla_put_flag(msg, rate_flg))
4727                 return false;
4728
4729         if (info->flags & RATE_INFO_FLAGS_MCS) {
4730                 if (nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs))
4731                         return false;
4732                 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
4733                     nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
4734                         return false;
4735         } else if (info->flags & RATE_INFO_FLAGS_VHT_MCS) {
4736                 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_MCS, info->mcs))
4737                         return false;
4738                 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_NSS, info->nss))
4739                         return false;
4740                 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
4741                     nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
4742                         return false;
4743         } else if (info->flags & RATE_INFO_FLAGS_HE_MCS) {
4744                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_MCS, info->mcs))
4745                         return false;
4746                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_NSS, info->nss))
4747                         return false;
4748                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_GI, info->he_gi))
4749                         return false;
4750                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_DCM, info->he_dcm))
4751                         return false;
4752                 if (info->bw == RATE_INFO_BW_HE_RU &&
4753                     nla_put_u8(msg, NL80211_RATE_INFO_HE_RU_ALLOC,
4754                                info->he_ru_alloc))
4755                         return false;
4756         }
4757
4758         nla_nest_end(msg, rate);
4759         return true;
4760 }
4761
4762 static bool nl80211_put_signal(struct sk_buff *msg, u8 mask, s8 *signal,
4763                                int id)
4764 {
4765         void *attr;
4766         int i = 0;
4767
4768         if (!mask)
4769                 return true;
4770
4771         attr = nla_nest_start(msg, id);
4772         if (!attr)
4773                 return false;
4774
4775         for (i = 0; i < IEEE80211_MAX_CHAINS; i++) {
4776                 if (!(mask & BIT(i)))
4777                         continue;
4778
4779                 if (nla_put_u8(msg, i, signal[i]))
4780                         return false;
4781         }
4782
4783         nla_nest_end(msg, attr);
4784
4785         return true;
4786 }
4787
4788 static int nl80211_send_station(struct sk_buff *msg, u32 cmd, u32 portid,
4789                                 u32 seq, int flags,
4790                                 struct cfg80211_registered_device *rdev,
4791                                 struct net_device *dev,
4792                                 const u8 *mac_addr, struct station_info *sinfo)
4793 {
4794         void *hdr;
4795         struct nlattr *sinfoattr, *bss_param;
4796
4797         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
4798         if (!hdr)
4799                 return -1;
4800
4801         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
4802             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
4803             nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation))
4804                 goto nla_put_failure;
4805
4806         sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO);
4807         if (!sinfoattr)
4808                 goto nla_put_failure;
4809
4810 #define PUT_SINFO(attr, memb, type) do {                                \
4811         BUILD_BUG_ON(sizeof(type) == sizeof(u64));                      \
4812         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_ ## attr) &&       \
4813             nla_put_ ## type(msg, NL80211_STA_INFO_ ## attr,            \
4814                              sinfo->memb))                              \
4815                 goto nla_put_failure;                                   \
4816         } while (0)
4817 #define PUT_SINFO_U64(attr, memb) do {                                  \
4818         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_ ## attr) &&       \
4819             nla_put_u64_64bit(msg, NL80211_STA_INFO_ ## attr,           \
4820                               sinfo->memb, NL80211_STA_INFO_PAD))       \
4821                 goto nla_put_failure;                                   \
4822         } while (0)
4823
4824         PUT_SINFO(CONNECTED_TIME, connected_time, u32);
4825         PUT_SINFO(INACTIVE_TIME, inactive_time, u32);
4826
4827         if (sinfo->filled & (BIT_ULL(NL80211_STA_INFO_RX_BYTES) |
4828                              BIT_ULL(NL80211_STA_INFO_RX_BYTES64)) &&
4829             nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES,
4830                         (u32)sinfo->rx_bytes))
4831                 goto nla_put_failure;
4832
4833         if (sinfo->filled & (BIT_ULL(NL80211_STA_INFO_TX_BYTES) |
4834                              BIT_ULL(NL80211_STA_INFO_TX_BYTES64)) &&
4835             nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES,
4836                         (u32)sinfo->tx_bytes))
4837                 goto nla_put_failure;
4838
4839         PUT_SINFO_U64(RX_BYTES64, rx_bytes);
4840         PUT_SINFO_U64(TX_BYTES64, tx_bytes);
4841         PUT_SINFO(LLID, llid, u16);
4842         PUT_SINFO(PLID, plid, u16);
4843         PUT_SINFO(PLINK_STATE, plink_state, u8);
4844         PUT_SINFO_U64(RX_DURATION, rx_duration);
4845
4846         switch (rdev->wiphy.signal_type) {
4847         case CFG80211_SIGNAL_TYPE_MBM:
4848                 PUT_SINFO(SIGNAL, signal, u8);
4849                 PUT_SINFO(SIGNAL_AVG, signal_avg, u8);
4850                 break;
4851         default:
4852                 break;
4853         }
4854         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL)) {
4855                 if (!nl80211_put_signal(msg, sinfo->chains,
4856                                         sinfo->chain_signal,
4857                                         NL80211_STA_INFO_CHAIN_SIGNAL))
4858                         goto nla_put_failure;
4859         }
4860         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL_AVG)) {
4861                 if (!nl80211_put_signal(msg, sinfo->chains,
4862                                         sinfo->chain_signal_avg,
4863                                         NL80211_STA_INFO_CHAIN_SIGNAL_AVG))
4864                         goto nla_put_failure;
4865         }
4866         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_TX_BITRATE)) {
4867                 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
4868                                           NL80211_STA_INFO_TX_BITRATE))
4869                         goto nla_put_failure;
4870         }
4871         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_RX_BITRATE)) {
4872                 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
4873                                           NL80211_STA_INFO_RX_BITRATE))
4874                         goto nla_put_failure;
4875         }
4876
4877         PUT_SINFO(RX_PACKETS, rx_packets, u32);
4878         PUT_SINFO(TX_PACKETS, tx_packets, u32);
4879         PUT_SINFO(TX_RETRIES, tx_retries, u32);
4880         PUT_SINFO(TX_FAILED, tx_failed, u32);
4881         PUT_SINFO(EXPECTED_THROUGHPUT, expected_throughput, u32);
4882         PUT_SINFO(BEACON_LOSS, beacon_loss_count, u32);
4883         PUT_SINFO(LOCAL_PM, local_pm, u32);
4884         PUT_SINFO(PEER_PM, peer_pm, u32);
4885         PUT_SINFO(NONPEER_PM, nonpeer_pm, u32);
4886         PUT_SINFO(CONNECTED_TO_GATE, connected_to_gate, u8);
4887
4888         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_BSS_PARAM)) {
4889                 bss_param = nla_nest_start(msg, NL80211_STA_INFO_BSS_PARAM);
4890                 if (!bss_param)
4891                         goto nla_put_failure;
4892
4893                 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) &&
4894                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) ||
4895                     ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) &&
4896                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) ||
4897                     ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) &&
4898                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) ||
4899                     nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
4900                                sinfo->bss_param.dtim_period) ||
4901                     nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
4902                                 sinfo->bss_param.beacon_interval))
4903                         goto nla_put_failure;
4904
4905                 nla_nest_end(msg, bss_param);
4906         }
4907         if ((sinfo->filled & BIT_ULL(NL80211_STA_INFO_STA_FLAGS)) &&
4908             nla_put(msg, NL80211_STA_INFO_STA_FLAGS,
4909                     sizeof(struct nl80211_sta_flag_update),
4910                     &sinfo->sta_flags))
4911                 goto nla_put_failure;
4912
4913         PUT_SINFO_U64(T_OFFSET, t_offset);
4914         PUT_SINFO_U64(RX_DROP_MISC, rx_dropped_misc);
4915         PUT_SINFO_U64(BEACON_RX, rx_beacon);
4916         PUT_SINFO(BEACON_SIGNAL_AVG, rx_beacon_signal_avg, u8);
4917         PUT_SINFO(RX_MPDUS, rx_mpdu_count, u32);
4918         PUT_SINFO(FCS_ERROR_COUNT, fcs_err_count, u32);
4919         if (wiphy_ext_feature_isset(&rdev->wiphy,
4920                                     NL80211_EXT_FEATURE_ACK_SIGNAL_SUPPORT)) {
4921                 PUT_SINFO(ACK_SIGNAL, ack_signal, u8);
4922                 PUT_SINFO(ACK_SIGNAL_AVG, avg_ack_signal, s8);
4923         }
4924
4925 #undef PUT_SINFO
4926 #undef PUT_SINFO_U64
4927
4928         if (sinfo->pertid) {
4929                 struct nlattr *tidsattr;
4930                 int tid;
4931
4932                 tidsattr = nla_nest_start(msg, NL80211_STA_INFO_TID_STATS);
4933                 if (!tidsattr)
4934                         goto nla_put_failure;
4935
4936                 for (tid = 0; tid < IEEE80211_NUM_TIDS + 1; tid++) {
4937                         struct cfg80211_tid_stats *tidstats;
4938                         struct nlattr *tidattr;
4939
4940                         tidstats = &sinfo->pertid[tid];
4941
4942                         if (!tidstats->filled)
4943                                 continue;
4944
4945                         tidattr = nla_nest_start(msg, tid + 1);
4946                         if (!tidattr)
4947                                 goto nla_put_failure;
4948
4949 #define PUT_TIDVAL_U64(attr, memb) do {                                 \
4950         if (tidstats->filled & BIT(NL80211_TID_STATS_ ## attr) &&       \
4951             nla_put_u64_64bit(msg, NL80211_TID_STATS_ ## attr,          \
4952                               tidstats->memb, NL80211_TID_STATS_PAD))   \
4953                 goto nla_put_failure;                                   \
4954         } while (0)
4955
4956                         PUT_TIDVAL_U64(RX_MSDU, rx_msdu);
4957                         PUT_TIDVAL_U64(TX_MSDU, tx_msdu);
4958                         PUT_TIDVAL_U64(TX_MSDU_RETRIES, tx_msdu_retries);
4959                         PUT_TIDVAL_U64(TX_MSDU_FAILED, tx_msdu_failed);
4960
4961 #undef PUT_TIDVAL_U64
4962                         if ((tidstats->filled &
4963                              BIT(NL80211_TID_STATS_TXQ_STATS)) &&
4964                             !nl80211_put_txq_stats(msg, &tidstats->txq_stats,
4965                                                    NL80211_TID_STATS_TXQ_STATS))
4966                                 goto nla_put_failure;
4967
4968                         nla_nest_end(msg, tidattr);
4969                 }
4970
4971                 nla_nest_end(msg, tidsattr);
4972         }
4973
4974         nla_nest_end(msg, sinfoattr);
4975
4976         if (sinfo->assoc_req_ies_len &&
4977             nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
4978                     sinfo->assoc_req_ies))
4979                 goto nla_put_failure;
4980
4981         cfg80211_sinfo_release_content(sinfo);
4982         genlmsg_end(msg, hdr);
4983         return 0;
4984
4985  nla_put_failure:
4986         cfg80211_sinfo_release_content(sinfo);
4987         genlmsg_cancel(msg, hdr);
4988         return -EMSGSIZE;
4989 }
4990
4991 static int nl80211_dump_station(struct sk_buff *skb,
4992                                 struct netlink_callback *cb)
4993 {
4994         struct station_info sinfo;
4995         struct cfg80211_registered_device *rdev;
4996         struct wireless_dev *wdev;
4997         u8 mac_addr[ETH_ALEN];
4998         int sta_idx = cb->args[2];
4999         int err;
5000
5001         rtnl_lock();
5002         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
5003         if (err)
5004                 goto out_err;
5005
5006         if (!wdev->netdev) {
5007                 err = -EINVAL;
5008                 goto out_err;
5009         }
5010
5011         if (!rdev->ops->dump_station) {
5012                 err = -EOPNOTSUPP;
5013                 goto out_err;
5014         }
5015
5016         while (1) {
5017                 memset(&sinfo, 0, sizeof(sinfo));
5018                 err = rdev_dump_station(rdev, wdev->netdev, sta_idx,
5019                                         mac_addr, &sinfo);
5020                 if (err == -ENOENT)
5021                         break;
5022                 if (err)
5023                         goto out_err;
5024
5025                 if (nl80211_send_station(skb, NL80211_CMD_NEW_STATION,
5026                                 NETLINK_CB(cb->skb).portid,
5027                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
5028                                 rdev, wdev->netdev, mac_addr,
5029                                 &sinfo) < 0)
5030                         goto out;
5031
5032                 sta_idx++;
5033         }
5034
5035  out:
5036         cb->args[2] = sta_idx;
5037         err = skb->len;
5038  out_err:
5039         rtnl_unlock();
5040
5041         return err;
5042 }
5043
5044 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
5045 {
5046         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5047         struct net_device *dev = info->user_ptr[1];
5048         struct station_info sinfo;
5049         struct sk_buff *msg;
5050         u8 *mac_addr = NULL;
5051         int err;
5052
5053         memset(&sinfo, 0, sizeof(sinfo));
5054
5055         if (!info->attrs[NL80211_ATTR_MAC])
5056                 return -EINVAL;
5057
5058         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
5059
5060         if (!rdev->ops->get_station)
5061                 return -EOPNOTSUPP;
5062
5063         err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
5064         if (err)
5065                 return err;
5066
5067         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5068         if (!msg) {
5069                 cfg80211_sinfo_release_content(&sinfo);
5070                 return -ENOMEM;
5071         }
5072
5073         if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION,
5074                                  info->snd_portid, info->snd_seq, 0,
5075                                  rdev, dev, mac_addr, &sinfo) < 0) {
5076                 nlmsg_free(msg);
5077                 return -ENOBUFS;
5078         }
5079
5080         return genlmsg_reply(msg, info);
5081 }
5082
5083 int cfg80211_check_station_change(struct wiphy *wiphy,
5084                                   struct station_parameters *params,
5085                                   enum cfg80211_station_type statype)
5086 {
5087         if (params->listen_interval != -1 &&
5088             statype != CFG80211_STA_AP_CLIENT_UNASSOC)
5089                 return -EINVAL;
5090
5091         if (params->support_p2p_ps != -1 &&
5092             statype != CFG80211_STA_AP_CLIENT_UNASSOC)
5093                 return -EINVAL;
5094
5095         if (params->aid &&
5096             !(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) &&
5097             statype != CFG80211_STA_AP_CLIENT_UNASSOC)
5098                 return -EINVAL;
5099
5100         /* When you run into this, adjust the code below for the new flag */
5101         BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
5102
5103         switch (statype) {
5104         case CFG80211_STA_MESH_PEER_KERNEL:
5105         case CFG80211_STA_MESH_PEER_USER:
5106                 /*
5107                  * No ignoring the TDLS flag here -- the userspace mesh
5108                  * code doesn't have the bug of including TDLS in the
5109                  * mask everywhere.
5110                  */
5111                 if (params->sta_flags_mask &
5112                                 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
5113                                   BIT(NL80211_STA_FLAG_MFP) |
5114                                   BIT(NL80211_STA_FLAG_AUTHORIZED)))
5115                         return -EINVAL;
5116                 break;
5117         case CFG80211_STA_TDLS_PEER_SETUP:
5118         case CFG80211_STA_TDLS_PEER_ACTIVE:
5119                 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
5120                         return -EINVAL;
5121                 /* ignore since it can't change */
5122                 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
5123                 break;
5124         default:
5125                 /* disallow mesh-specific things */
5126                 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
5127                         return -EINVAL;
5128                 if (params->local_pm)
5129                         return -EINVAL;
5130                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
5131                         return -EINVAL;
5132         }
5133
5134         if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
5135             statype != CFG80211_STA_TDLS_PEER_ACTIVE) {
5136                 /* TDLS can't be set, ... */
5137                 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
5138                         return -EINVAL;
5139                 /*
5140                  * ... but don't bother the driver with it. This works around
5141                  * a hostapd/wpa_supplicant issue -- it always includes the
5142                  * TLDS_PEER flag in the mask even for AP mode.
5143                  */
5144                 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
5145         }
5146
5147         if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
5148             statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
5149                 /* reject other things that can't change */
5150                 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD)
5151                         return -EINVAL;
5152                 if (params->sta_modify_mask & STATION_PARAM_APPLY_CAPABILITY)
5153                         return -EINVAL;
5154                 if (params->supported_rates)
5155                         return -EINVAL;
5156                 if (params->ext_capab || params->ht_capa || params->vht_capa ||
5157                     params->he_capa)
5158                         return -EINVAL;
5159         }
5160
5161         if (statype != CFG80211_STA_AP_CLIENT &&
5162             statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
5163                 if (params->vlan)
5164                         return -EINVAL;
5165         }
5166
5167         switch (statype) {
5168         case CFG80211_STA_AP_MLME_CLIENT:
5169                 /* Use this only for authorizing/unauthorizing a station */
5170                 if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)))
5171                         return -EOPNOTSUPP;
5172                 break;
5173         case CFG80211_STA_AP_CLIENT:
5174         case CFG80211_STA_AP_CLIENT_UNASSOC:
5175                 /* accept only the listed bits */
5176                 if (params->sta_flags_mask &
5177                                 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
5178                                   BIT(NL80211_STA_FLAG_AUTHENTICATED) |
5179                                   BIT(NL80211_STA_FLAG_ASSOCIATED) |
5180                                   BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
5181                                   BIT(NL80211_STA_FLAG_WME) |
5182                                   BIT(NL80211_STA_FLAG_MFP)))
5183                         return -EINVAL;
5184
5185                 /* but authenticated/associated only if driver handles it */
5186                 if (!(wiphy->features & NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
5187                     params->sta_flags_mask &
5188                                 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
5189                                  BIT(NL80211_STA_FLAG_ASSOCIATED)))
5190                         return -EINVAL;
5191                 break;
5192         case CFG80211_STA_IBSS:
5193         case CFG80211_STA_AP_STA:
5194                 /* reject any changes other than AUTHORIZED */
5195                 if (params->sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
5196                         return -EINVAL;
5197                 break;
5198         case CFG80211_STA_TDLS_PEER_SETUP:
5199                 /* reject any changes other than AUTHORIZED or WME */
5200                 if (params->sta_flags_mask & ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
5201                                                BIT(NL80211_STA_FLAG_WME)))
5202                         return -EINVAL;
5203                 /* force (at least) rates when authorizing */
5204                 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED) &&
5205                     !params->supported_rates)
5206                         return -EINVAL;
5207                 break;
5208         case CFG80211_STA_TDLS_PEER_ACTIVE:
5209                 /* reject any changes */
5210                 return -EINVAL;
5211         case CFG80211_STA_MESH_PEER_KERNEL:
5212                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
5213                         return -EINVAL;
5214                 break;
5215         case CFG80211_STA_MESH_PEER_USER:
5216                 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION &&
5217                     params->plink_action != NL80211_PLINK_ACTION_BLOCK)
5218                         return -EINVAL;
5219                 break;
5220         }
5221
5222         /*
5223          * Older kernel versions ignored this attribute entirely, so don't
5224          * reject attempts to update it but mark it as unused instead so the
5225          * driver won't look at the data.
5226          */
5227         if (statype != CFG80211_STA_AP_CLIENT_UNASSOC &&
5228             statype != CFG80211_STA_TDLS_PEER_SETUP)
5229                 params->opmode_notif_used = false;
5230
5231         return 0;
5232 }
5233 EXPORT_SYMBOL(cfg80211_check_station_change);
5234
5235 /*
5236  * Get vlan interface making sure it is running and on the right wiphy.
5237  */
5238 static struct net_device *get_vlan(struct genl_info *info,
5239                                    struct cfg80211_registered_device *rdev)
5240 {
5241         struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
5242         struct net_device *v;
5243         int ret;
5244
5245         if (!vlanattr)
5246                 return NULL;
5247
5248         v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr));
5249         if (!v)
5250                 return ERR_PTR(-ENODEV);
5251
5252         if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) {
5253                 ret = -EINVAL;
5254                 goto error;
5255         }
5256
5257         if (v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
5258             v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5259             v->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
5260                 ret = -EINVAL;
5261                 goto error;
5262         }
5263
5264         if (!netif_running(v)) {
5265                 ret = -ENETDOWN;
5266                 goto error;
5267         }
5268
5269         return v;
5270  error:
5271         dev_put(v);
5272         return ERR_PTR(ret);
5273 }
5274
5275 static const struct nla_policy
5276 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] = {
5277         [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
5278         [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
5279 };
5280
5281 static int nl80211_parse_sta_wme(struct genl_info *info,
5282                                  struct station_parameters *params)
5283 {
5284         struct nlattr *tb[NL80211_STA_WME_MAX + 1];
5285         struct nlattr *nla;
5286         int err;
5287
5288         /* parse WME attributes if present */
5289         if (!info->attrs[NL80211_ATTR_STA_WME])
5290                 return 0;
5291
5292         nla = info->attrs[NL80211_ATTR_STA_WME];
5293         err = nla_parse_nested(tb, NL80211_STA_WME_MAX, nla,
5294                                nl80211_sta_wme_policy, info->extack);
5295         if (err)
5296                 return err;
5297
5298         if (tb[NL80211_STA_WME_UAPSD_QUEUES])
5299                 params->uapsd_queues = nla_get_u8(
5300                         tb[NL80211_STA_WME_UAPSD_QUEUES]);
5301         if (params->uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
5302                 return -EINVAL;
5303
5304         if (tb[NL80211_STA_WME_MAX_SP])
5305                 params->max_sp = nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
5306
5307         if (params->max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
5308                 return -EINVAL;
5309
5310         params->sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
5311
5312         return 0;
5313 }
5314
5315 static int nl80211_parse_sta_channel_info(struct genl_info *info,
5316                                       struct station_parameters *params)
5317 {
5318         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]) {
5319                 params->supported_channels =
5320                      nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
5321                 params->supported_channels_len =
5322                      nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
5323                 /*
5324                  * Need to include at least one (first channel, number of
5325                  * channels) tuple for each subband, and must have proper
5326                  * tuples for the rest of the data as well.
5327                  */
5328                 if (params->supported_channels_len < 2)
5329                         return -EINVAL;
5330                 if (params->supported_channels_len % 2)
5331                         return -EINVAL;
5332         }
5333
5334         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]) {
5335                 params->supported_oper_classes =
5336                  nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
5337                 params->supported_oper_classes_len =
5338                   nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
5339                 /*
5340                  * The value of the Length field of the Supported Operating
5341                  * Classes element is between 2 and 253.
5342                  */
5343                 if (params->supported_oper_classes_len < 2 ||
5344                     params->supported_oper_classes_len > 253)
5345                         return -EINVAL;
5346         }
5347         return 0;
5348 }
5349
5350 static int nl80211_set_station_tdls(struct genl_info *info,
5351                                     struct station_parameters *params)
5352 {
5353         int err;
5354         /* Dummy STA entry gets updated once the peer capabilities are known */
5355         if (info->attrs[NL80211_ATTR_PEER_AID])
5356                 params->aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
5357         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
5358                 params->ht_capa =
5359                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
5360         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
5361                 params->vht_capa =
5362                         nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
5363         if (info->attrs[NL80211_ATTR_HE_CAPABILITY]) {
5364                 params->he_capa =
5365                         nla_data(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
5366                 params->he_capa_len =
5367                         nla_len(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
5368
5369                 if (params->he_capa_len < NL80211_HE_MIN_CAPABILITY_LEN)
5370                         return -EINVAL;
5371         }
5372
5373         err = nl80211_parse_sta_channel_info(info, params);
5374         if (err)
5375                 return err;
5376
5377         return nl80211_parse_sta_wme(info, params);
5378 }
5379
5380 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
5381 {
5382         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5383         struct net_device *dev = info->user_ptr[1];
5384         struct station_parameters params;
5385         u8 *mac_addr;
5386         int err;
5387
5388         memset(&params, 0, sizeof(params));
5389
5390         if (!rdev->ops->change_station)
5391                 return -EOPNOTSUPP;
5392
5393         /*
5394          * AID and listen_interval properties can be set only for unassociated
5395          * station. Include these parameters here and will check them in
5396          * cfg80211_check_station_change().
5397          */
5398         if (info->attrs[NL80211_ATTR_STA_AID])
5399                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
5400
5401         if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
5402                 params.listen_interval =
5403                      nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
5404         else
5405                 params.listen_interval = -1;
5406
5407         if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS])
5408                 params.support_p2p_ps =
5409                         nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
5410         else
5411                 params.support_p2p_ps = -1;
5412
5413         if (!info->attrs[NL80211_ATTR_MAC])
5414                 return -EINVAL;
5415
5416         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
5417
5418         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
5419                 params.supported_rates =
5420                         nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
5421                 params.supported_rates_len =
5422                         nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
5423         }
5424
5425         if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
5426                 params.capability =
5427                         nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
5428                 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
5429         }
5430
5431         if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
5432                 params.ext_capab =
5433                         nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
5434                 params.ext_capab_len =
5435                         nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
5436         }
5437
5438         if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
5439                 return -EINVAL;
5440
5441         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
5442                 params.plink_action =
5443                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
5444
5445         if (info->attrs[NL80211_ATTR_STA_PLINK_STATE]) {
5446                 params.plink_state =
5447                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
5448                 if (info->attrs[NL80211_ATTR_MESH_PEER_AID])
5449                         params.peer_aid = nla_get_u16(
5450                                 info->attrs[NL80211_ATTR_MESH_PEER_AID]);
5451                 params.sta_modify_mask |= STATION_PARAM_APPLY_PLINK_STATE;
5452         }
5453
5454         if (info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE])
5455                 params.local_pm = nla_get_u32(
5456                         info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]);
5457
5458         if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
5459                 params.opmode_notif_used = true;
5460                 params.opmode_notif =
5461                         nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
5462         }
5463
5464         /* Include parameters for TDLS peer (will check later) */
5465         err = nl80211_set_station_tdls(info, &params);
5466         if (err)
5467                 return err;
5468
5469         params.vlan = get_vlan(info, rdev);
5470         if (IS_ERR(params.vlan))
5471                 return PTR_ERR(params.vlan);
5472
5473         switch (dev->ieee80211_ptr->iftype) {
5474         case NL80211_IFTYPE_AP:
5475         case NL80211_IFTYPE_AP_VLAN:
5476         case NL80211_IFTYPE_P2P_GO:
5477         case NL80211_IFTYPE_P2P_CLIENT:
5478         case NL80211_IFTYPE_STATION:
5479         case NL80211_IFTYPE_ADHOC:
5480         case NL80211_IFTYPE_MESH_POINT:
5481                 break;
5482         default:
5483                 err = -EOPNOTSUPP;
5484                 goto out_put_vlan;
5485         }
5486
5487         /* driver will call cfg80211_check_station_change() */
5488         err = rdev_change_station(rdev, dev, mac_addr, &params);
5489
5490  out_put_vlan:
5491         if (params.vlan)
5492                 dev_put(params.vlan);
5493
5494         return err;
5495 }
5496
5497 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
5498 {
5499         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5500         int err;
5501         struct net_device *dev = info->user_ptr[1];
5502         struct station_parameters params;
5503         u8 *mac_addr = NULL;
5504         u32 auth_assoc = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
5505                          BIT(NL80211_STA_FLAG_ASSOCIATED);
5506
5507         memset(&params, 0, sizeof(params));
5508
5509         if (!rdev->ops->add_station)
5510                 return -EOPNOTSUPP;
5511
5512         if (!info->attrs[NL80211_ATTR_MAC])
5513                 return -EINVAL;
5514
5515         if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
5516                 return -EINVAL;
5517
5518         if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
5519                 return -EINVAL;
5520
5521         if (!info->attrs[NL80211_ATTR_STA_AID] &&
5522             !info->attrs[NL80211_ATTR_PEER_AID])
5523                 return -EINVAL;
5524
5525         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
5526         params.supported_rates =
5527                 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
5528         params.supported_rates_len =
5529                 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
5530         params.listen_interval =
5531                 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
5532
5533         if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]) {
5534                 params.support_p2p_ps =
5535                         nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
5536         } else {
5537                 /*
5538                  * if not specified, assume it's supported for P2P GO interface,
5539                  * and is NOT supported for AP interface
5540                  */
5541                 params.support_p2p_ps =
5542                         dev->ieee80211_ptr->iftype == NL80211_IFTYPE_P2P_GO;
5543         }
5544
5545         if (info->attrs[NL80211_ATTR_PEER_AID])
5546                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
5547         else
5548                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
5549
5550         if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
5551                 params.capability =
5552                         nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
5553                 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
5554         }
5555
5556         if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
5557                 params.ext_capab =
5558                         nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
5559                 params.ext_capab_len =
5560                         nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
5561         }
5562
5563         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
5564                 params.ht_capa =
5565                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
5566
5567         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
5568                 params.vht_capa =
5569                         nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
5570
5571         if (info->attrs[NL80211_ATTR_HE_CAPABILITY]) {
5572                 params.he_capa =
5573                         nla_data(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
5574                 params.he_capa_len =
5575                         nla_len(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
5576
5577                 /* max len is validated in nla policy */
5578                 if (params.he_capa_len < NL80211_HE_MIN_CAPABILITY_LEN)
5579                         return -EINVAL;
5580         }
5581
5582         if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
5583                 params.opmode_notif_used = true;
5584                 params.opmode_notif =
5585                         nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
5586         }
5587
5588         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
5589                 params.plink_action =
5590                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
5591
5592         err = nl80211_parse_sta_channel_info(info, &params);
5593         if (err)
5594                 return err;
5595
5596         err = nl80211_parse_sta_wme(info, &params);
5597         if (err)
5598                 return err;
5599
5600         if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
5601                 return -EINVAL;
5602
5603         /* HT/VHT requires QoS, but if we don't have that just ignore HT/VHT
5604          * as userspace might just pass through the capabilities from the IEs
5605          * directly, rather than enforcing this restriction and returning an
5606          * error in this case.
5607          */
5608         if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME))) {
5609                 params.ht_capa = NULL;
5610                 params.vht_capa = NULL;
5611
5612                 /* HE requires WME */
5613                 if (params.he_capa_len)
5614                         return -EINVAL;
5615         }
5616
5617         /* When you run into this, adjust the code below for the new flag */
5618         BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
5619
5620         switch (dev->ieee80211_ptr->iftype) {
5621         case NL80211_IFTYPE_AP:
5622         case NL80211_IFTYPE_AP_VLAN:
5623         case NL80211_IFTYPE_P2P_GO:
5624                 /* ignore WME attributes if iface/sta is not capable */
5625                 if (!(rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) ||
5626                     !(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)))
5627                         params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
5628
5629                 /* TDLS peers cannot be added */
5630                 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
5631                     info->attrs[NL80211_ATTR_PEER_AID])
5632                         return -EINVAL;
5633                 /* but don't bother the driver with it */
5634                 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
5635
5636                 /* allow authenticated/associated only if driver handles it */
5637                 if (!(rdev->wiphy.features &
5638                                 NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
5639                     params.sta_flags_mask & auth_assoc)
5640                         return -EINVAL;
5641
5642                 /* Older userspace, or userspace wanting to be compatible with
5643                  * !NL80211_FEATURE_FULL_AP_CLIENT_STATE, will not set the auth
5644                  * and assoc flags in the mask, but assumes the station will be
5645                  * added as associated anyway since this was the required driver
5646                  * behaviour before NL80211_FEATURE_FULL_AP_CLIENT_STATE was
5647                  * introduced.
5648                  * In order to not bother drivers with this quirk in the API
5649                  * set the flags in both the mask and set for new stations in
5650                  * this case.
5651                  */
5652                 if (!(params.sta_flags_mask & auth_assoc)) {
5653                         params.sta_flags_mask |= auth_assoc;
5654                         params.sta_flags_set |= auth_assoc;
5655                 }
5656
5657                 /* must be last in here for error handling */
5658                 params.vlan = get_vlan(info, rdev);
5659                 if (IS_ERR(params.vlan))
5660                         return PTR_ERR(params.vlan);
5661                 break;
5662         case NL80211_IFTYPE_MESH_POINT:
5663                 /* ignore uAPSD data */
5664                 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
5665
5666                 /* associated is disallowed */
5667                 if (params.sta_flags_mask & BIT(NL80211_STA_FLAG_ASSOCIATED))
5668                         return -EINVAL;
5669                 /* TDLS peers cannot be added */
5670                 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
5671                     info->attrs[NL80211_ATTR_PEER_AID])
5672                         return -EINVAL;
5673                 break;
5674         case NL80211_IFTYPE_STATION:
5675         case NL80211_IFTYPE_P2P_CLIENT:
5676                 /* ignore uAPSD data */
5677                 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
5678
5679                 /* these are disallowed */
5680                 if (params.sta_flags_mask &
5681                                 (BIT(NL80211_STA_FLAG_ASSOCIATED) |
5682                                  BIT(NL80211_STA_FLAG_AUTHENTICATED)))
5683                         return -EINVAL;
5684                 /* Only TDLS peers can be added */
5685                 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
5686                         return -EINVAL;
5687                 /* Can only add if TDLS ... */
5688                 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS))
5689                         return -EOPNOTSUPP;
5690                 /* ... with external setup is supported */
5691                 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP))
5692                         return -EOPNOTSUPP;
5693                 /*
5694                  * Older wpa_supplicant versions always mark the TDLS peer
5695                  * as authorized, but it shouldn't yet be.
5696                  */
5697                 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_AUTHORIZED);
5698                 break;
5699         default:
5700                 return -EOPNOTSUPP;
5701         }
5702
5703         /* be aware of params.vlan when changing code here */
5704
5705         err = rdev_add_station(rdev, dev, mac_addr, &params);
5706
5707         if (params.vlan)
5708                 dev_put(params.vlan);
5709         return err;
5710 }
5711
5712 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
5713 {
5714         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5715         struct net_device *dev = info->user_ptr[1];
5716         struct station_del_parameters params;
5717
5718         memset(&params, 0, sizeof(params));
5719
5720         if (info->attrs[NL80211_ATTR_MAC])
5721                 params.mac = nla_data(info->attrs[NL80211_ATTR_MAC]);
5722
5723         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5724             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
5725             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
5726             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5727                 return -EINVAL;
5728
5729         if (!rdev->ops->del_station)
5730                 return -EOPNOTSUPP;
5731
5732         if (info->attrs[NL80211_ATTR_MGMT_SUBTYPE]) {
5733                 params.subtype =
5734                         nla_get_u8(info->attrs[NL80211_ATTR_MGMT_SUBTYPE]);
5735                 if (params.subtype != IEEE80211_STYPE_DISASSOC >> 4 &&
5736                     params.subtype != IEEE80211_STYPE_DEAUTH >> 4)
5737                         return -EINVAL;
5738         } else {
5739                 /* Default to Deauthentication frame */
5740                 params.subtype = IEEE80211_STYPE_DEAUTH >> 4;
5741         }
5742
5743         if (info->attrs[NL80211_ATTR_REASON_CODE]) {
5744                 params.reason_code =
5745                         nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
5746                 if (params.reason_code == 0)
5747                         return -EINVAL; /* 0 is reserved */
5748         } else {
5749                 /* Default to reason code 2 */
5750                 params.reason_code = WLAN_REASON_PREV_AUTH_NOT_VALID;
5751         }
5752
5753         return rdev_del_station(rdev, dev, &params);
5754 }
5755
5756 static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq,
5757                                 int flags, struct net_device *dev,
5758                                 u8 *dst, u8 *next_hop,
5759                                 struct mpath_info *pinfo)
5760 {
5761         void *hdr;
5762         struct nlattr *pinfoattr;
5763
5764         hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_MPATH);
5765         if (!hdr)
5766                 return -1;
5767
5768         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
5769             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
5770             nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) ||
5771             nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation))
5772                 goto nla_put_failure;
5773
5774         pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO);
5775         if (!pinfoattr)
5776                 goto nla_put_failure;
5777         if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) &&
5778             nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
5779                         pinfo->frame_qlen))
5780                 goto nla_put_failure;
5781         if (((pinfo->filled & MPATH_INFO_SN) &&
5782              nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) ||
5783             ((pinfo->filled & MPATH_INFO_METRIC) &&
5784              nla_put_u32(msg, NL80211_MPATH_INFO_METRIC,
5785                          pinfo->metric)) ||
5786             ((pinfo->filled & MPATH_INFO_EXPTIME) &&
5787              nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME,
5788                          pinfo->exptime)) ||
5789             ((pinfo->filled & MPATH_INFO_FLAGS) &&
5790              nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS,
5791                         pinfo->flags)) ||
5792             ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) &&
5793              nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
5794                          pinfo->discovery_timeout)) ||
5795             ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) &&
5796              nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
5797                         pinfo->discovery_retries)))
5798                 goto nla_put_failure;
5799
5800         nla_nest_end(msg, pinfoattr);
5801
5802         genlmsg_end(msg, hdr);
5803         return 0;
5804
5805  nla_put_failure:
5806         genlmsg_cancel(msg, hdr);
5807         return -EMSGSIZE;
5808 }
5809
5810 static int nl80211_dump_mpath(struct sk_buff *skb,
5811                               struct netlink_callback *cb)
5812 {
5813         struct mpath_info pinfo;
5814         struct cfg80211_registered_device *rdev;
5815         struct wireless_dev *wdev;
5816         u8 dst[ETH_ALEN];
5817         u8 next_hop[ETH_ALEN];
5818         int path_idx = cb->args[2];
5819         int err;
5820
5821         rtnl_lock();
5822         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
5823         if (err)
5824                 goto out_err;
5825
5826         if (!rdev->ops->dump_mpath) {
5827                 err = -EOPNOTSUPP;
5828                 goto out_err;
5829         }
5830
5831         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
5832                 err = -EOPNOTSUPP;
5833                 goto out_err;
5834         }
5835
5836         while (1) {
5837                 err = rdev_dump_mpath(rdev, wdev->netdev, path_idx, dst,
5838                                       next_hop, &pinfo);
5839                 if (err == -ENOENT)
5840                         break;
5841                 if (err)
5842                         goto out_err;
5843
5844                 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
5845                                        cb->nlh->nlmsg_seq, NLM_F_MULTI,
5846                                        wdev->netdev, dst, next_hop,
5847                                        &pinfo) < 0)
5848                         goto out;
5849
5850                 path_idx++;
5851         }
5852
5853  out:
5854         cb->args[2] = path_idx;
5855         err = skb->len;
5856  out_err:
5857         rtnl_unlock();
5858         return err;
5859 }
5860
5861 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
5862 {
5863         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5864         int err;
5865         struct net_device *dev = info->user_ptr[1];
5866         struct mpath_info pinfo;
5867         struct sk_buff *msg;
5868         u8 *dst = NULL;
5869         u8 next_hop[ETH_ALEN];
5870
5871         memset(&pinfo, 0, sizeof(pinfo));
5872
5873         if (!info->attrs[NL80211_ATTR_MAC])
5874                 return -EINVAL;
5875
5876         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
5877
5878         if (!rdev->ops->get_mpath)
5879                 return -EOPNOTSUPP;
5880
5881         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
5882                 return -EOPNOTSUPP;
5883
5884         err = rdev_get_mpath(rdev, dev, dst, next_hop, &pinfo);
5885         if (err)
5886                 return err;
5887
5888         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5889         if (!msg)
5890                 return -ENOMEM;
5891
5892         if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
5893                                  dev, dst, next_hop, &pinfo) < 0) {
5894                 nlmsg_free(msg);
5895                 return -ENOBUFS;
5896         }
5897
5898         return genlmsg_reply(msg, info);
5899 }
5900
5901 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
5902 {
5903         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5904         struct net_device *dev = info->user_ptr[1];
5905         u8 *dst = NULL;
5906         u8 *next_hop = NULL;
5907
5908         if (!info->attrs[NL80211_ATTR_MAC])
5909                 return -EINVAL;
5910
5911         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
5912                 return -EINVAL;
5913
5914         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
5915         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
5916
5917         if (!rdev->ops->change_mpath)
5918                 return -EOPNOTSUPP;
5919
5920         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
5921                 return -EOPNOTSUPP;
5922
5923         return rdev_change_mpath(rdev, dev, dst, next_hop);
5924 }
5925
5926 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
5927 {
5928         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5929         struct net_device *dev = info->user_ptr[1];
5930         u8 *dst = NULL;
5931         u8 *next_hop = NULL;
5932
5933         if (!info->attrs[NL80211_ATTR_MAC])
5934                 return -EINVAL;
5935
5936         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
5937                 return -EINVAL;
5938
5939         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
5940         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
5941
5942         if (!rdev->ops->add_mpath)
5943                 return -EOPNOTSUPP;
5944
5945         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
5946                 return -EOPNOTSUPP;
5947
5948         return rdev_add_mpath(rdev, dev, dst, next_hop);
5949 }
5950
5951 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
5952 {
5953         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5954         struct net_device *dev = info->user_ptr[1];
5955         u8 *dst = NULL;
5956
5957         if (info->attrs[NL80211_ATTR_MAC])
5958                 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
5959
5960         if (!rdev->ops->del_mpath)
5961                 return -EOPNOTSUPP;
5962
5963         return rdev_del_mpath(rdev, dev, dst);
5964 }
5965
5966 static int nl80211_get_mpp(struct sk_buff *skb, struct genl_info *info)
5967 {
5968         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5969         int err;
5970         struct net_device *dev = info->user_ptr[1];
5971         struct mpath_info pinfo;
5972         struct sk_buff *msg;
5973         u8 *dst = NULL;
5974         u8 mpp[ETH_ALEN];
5975
5976         memset(&pinfo, 0, sizeof(pinfo));
5977
5978         if (!info->attrs[NL80211_ATTR_MAC])
5979                 return -EINVAL;
5980
5981         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
5982
5983         if (!rdev->ops->get_mpp)
5984                 return -EOPNOTSUPP;
5985
5986         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
5987                 return -EOPNOTSUPP;
5988
5989         err = rdev_get_mpp(rdev, dev, dst, mpp, &pinfo);
5990         if (err)
5991                 return err;
5992
5993         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5994         if (!msg)
5995                 return -ENOMEM;
5996
5997         if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
5998                                dev, dst, mpp, &pinfo) < 0) {
5999                 nlmsg_free(msg);
6000                 return -ENOBUFS;
6001         }
6002
6003         return genlmsg_reply(msg, info);
6004 }
6005
6006 static int nl80211_dump_mpp(struct sk_buff *skb,
6007                             struct netlink_callback *cb)
6008 {
6009         struct mpath_info pinfo;
6010         struct cfg80211_registered_device *rdev;
6011         struct wireless_dev *wdev;
6012         u8 dst[ETH_ALEN];
6013         u8 mpp[ETH_ALEN];
6014         int path_idx = cb->args[2];
6015         int err;
6016
6017         rtnl_lock();
6018         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
6019         if (err)
6020                 goto out_err;
6021
6022         if (!rdev->ops->dump_mpp) {
6023                 err = -EOPNOTSUPP;
6024                 goto out_err;
6025         }
6026
6027         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
6028                 err = -EOPNOTSUPP;
6029                 goto out_err;
6030         }
6031
6032         while (1) {
6033                 err = rdev_dump_mpp(rdev, wdev->netdev, path_idx, dst,
6034                                     mpp, &pinfo);
6035                 if (err == -ENOENT)
6036                         break;
6037                 if (err)
6038                         goto out_err;
6039
6040                 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
6041                                        cb->nlh->nlmsg_seq, NLM_F_MULTI,
6042                                        wdev->netdev, dst, mpp,
6043                                        &pinfo) < 0)
6044                         goto out;
6045
6046                 path_idx++;
6047         }
6048
6049  out:
6050         cb->args[2] = path_idx;
6051         err = skb->len;
6052  out_err:
6053         rtnl_unlock();
6054         return err;
6055 }
6056
6057 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
6058 {
6059         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6060         struct net_device *dev = info->user_ptr[1];
6061         struct wireless_dev *wdev = dev->ieee80211_ptr;
6062         struct bss_parameters params;
6063         int err;
6064
6065         memset(&params, 0, sizeof(params));
6066         /* default to not changing parameters */
6067         params.use_cts_prot = -1;
6068         params.use_short_preamble = -1;
6069         params.use_short_slot_time = -1;
6070         params.ap_isolate = -1;
6071         params.ht_opmode = -1;
6072         params.p2p_ctwindow = -1;
6073         params.p2p_opp_ps = -1;
6074
6075         if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
6076                 params.use_cts_prot =
6077                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
6078         if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
6079                 params.use_short_preamble =
6080                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
6081         if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
6082                 params.use_short_slot_time =
6083                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
6084         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
6085                 params.basic_rates =
6086                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
6087                 params.basic_rates_len =
6088                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
6089         }
6090         if (info->attrs[NL80211_ATTR_AP_ISOLATE])
6091                 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
6092         if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
6093                 params.ht_opmode =
6094                         nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
6095
6096         if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
6097                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
6098                         return -EINVAL;
6099                 params.p2p_ctwindow =
6100                         nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
6101                 if (params.p2p_ctwindow != 0 &&
6102                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
6103                         return -EINVAL;
6104         }
6105
6106         if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
6107                 u8 tmp;
6108
6109                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
6110                         return -EINVAL;
6111                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
6112                 params.p2p_opp_ps = tmp;
6113                 if (params.p2p_opp_ps &&
6114                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
6115                         return -EINVAL;
6116         }
6117
6118         if (!rdev->ops->change_bss)
6119                 return -EOPNOTSUPP;
6120
6121         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
6122             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
6123                 return -EOPNOTSUPP;
6124
6125         wdev_lock(wdev);
6126         err = rdev_change_bss(rdev, dev, &params);
6127         wdev_unlock(wdev);
6128
6129         return err;
6130 }
6131
6132 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
6133 {
6134         char *data = NULL;
6135         bool is_indoor;
6136         enum nl80211_user_reg_hint_type user_reg_hint_type;
6137         u32 owner_nlportid;
6138
6139         /*
6140          * You should only get this when cfg80211 hasn't yet initialized
6141          * completely when built-in to the kernel right between the time
6142          * window between nl80211_init() and regulatory_init(), if that is
6143          * even possible.
6144          */
6145         if (unlikely(!rcu_access_pointer(cfg80211_regdomain)))
6146                 return -EINPROGRESS;
6147
6148         if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE])
6149                 user_reg_hint_type =
6150                   nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]);
6151         else
6152                 user_reg_hint_type = NL80211_USER_REG_HINT_USER;
6153
6154         switch (user_reg_hint_type) {
6155         case NL80211_USER_REG_HINT_USER:
6156         case NL80211_USER_REG_HINT_CELL_BASE:
6157                 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
6158                         return -EINVAL;
6159
6160                 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
6161                 return regulatory_hint_user(data, user_reg_hint_type);
6162         case NL80211_USER_REG_HINT_INDOOR:
6163                 if (info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
6164                         owner_nlportid = info->snd_portid;
6165                         is_indoor = !!info->attrs[NL80211_ATTR_REG_INDOOR];
6166                 } else {
6167                         owner_nlportid = 0;
6168                         is_indoor = true;
6169                 }
6170
6171                 return regulatory_hint_indoor(is_indoor, owner_nlportid);
6172         default:
6173                 return -EINVAL;
6174         }
6175 }
6176
6177 static int nl80211_reload_regdb(struct sk_buff *skb, struct genl_info *info)
6178 {
6179         return reg_reload_regdb();
6180 }
6181
6182 static int nl80211_get_mesh_config(struct sk_buff *skb,
6183                                    struct genl_info *info)
6184 {
6185         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6186         struct net_device *dev = info->user_ptr[1];
6187         struct wireless_dev *wdev = dev->ieee80211_ptr;
6188         struct mesh_config cur_params;
6189         int err = 0;
6190         void *hdr;
6191         struct nlattr *pinfoattr;
6192         struct sk_buff *msg;
6193
6194         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
6195                 return -EOPNOTSUPP;
6196
6197         if (!rdev->ops->get_mesh_config)
6198                 return -EOPNOTSUPP;
6199
6200         wdev_lock(wdev);
6201         /* If not connected, get default parameters */
6202         if (!wdev->mesh_id_len)
6203                 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
6204         else
6205                 err = rdev_get_mesh_config(rdev, dev, &cur_params);
6206         wdev_unlock(wdev);
6207
6208         if (err)
6209                 return err;
6210
6211         /* Draw up a netlink message to send back */
6212         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6213         if (!msg)
6214                 return -ENOMEM;
6215         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
6216                              NL80211_CMD_GET_MESH_CONFIG);
6217         if (!hdr)
6218                 goto out;
6219         pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG);
6220         if (!pinfoattr)
6221                 goto nla_put_failure;
6222         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
6223             nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
6224                         cur_params.dot11MeshRetryTimeout) ||
6225             nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
6226                         cur_params.dot11MeshConfirmTimeout) ||
6227             nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
6228                         cur_params.dot11MeshHoldingTimeout) ||
6229             nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
6230                         cur_params.dot11MeshMaxPeerLinks) ||
6231             nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES,
6232                        cur_params.dot11MeshMaxRetries) ||
6233             nla_put_u8(msg, NL80211_MESHCONF_TTL,
6234                        cur_params.dot11MeshTTL) ||
6235             nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL,
6236                        cur_params.element_ttl) ||
6237             nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
6238                        cur_params.auto_open_plinks) ||
6239             nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
6240                         cur_params.dot11MeshNbrOffsetMaxNeighbor) ||
6241             nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
6242                        cur_params.dot11MeshHWMPmaxPREQretries) ||
6243             nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
6244                         cur_params.path_refresh_time) ||
6245             nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
6246                         cur_params.min_discovery_timeout) ||
6247             nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
6248                         cur_params.dot11MeshHWMPactivePathTimeout) ||
6249             nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
6250                         cur_params.dot11MeshHWMPpreqMinInterval) ||
6251             nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
6252                         cur_params.dot11MeshHWMPperrMinInterval) ||
6253             nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
6254                         cur_params.dot11MeshHWMPnetDiameterTraversalTime) ||
6255             nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
6256                        cur_params.dot11MeshHWMPRootMode) ||
6257             nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
6258                         cur_params.dot11MeshHWMPRannInterval) ||
6259             nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
6260                        cur_params.dot11MeshGateAnnouncementProtocol) ||
6261             nla_put_u8(msg, NL80211_MESHCONF_FORWARDING,
6262                        cur_params.dot11MeshForwarding) ||
6263             nla_put_s32(msg, NL80211_MESHCONF_RSSI_THRESHOLD,
6264                         cur_params.rssi_threshold) ||
6265             nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE,
6266                         cur_params.ht_opmode) ||
6267             nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
6268                         cur_params.dot11MeshHWMPactivePathToRootTimeout) ||
6269             nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
6270                         cur_params.dot11MeshHWMProotInterval) ||
6271             nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
6272                         cur_params.dot11MeshHWMPconfirmationInterval) ||
6273             nla_put_u32(msg, NL80211_MESHCONF_POWER_MODE,
6274                         cur_params.power_mode) ||
6275             nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW,
6276                         cur_params.dot11MeshAwakeWindowDuration) ||
6277             nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT,
6278                         cur_params.plink_timeout) ||
6279             nla_put_u8(msg, NL80211_MESHCONF_CONNECTED_TO_GATE,
6280                        cur_params.dot11MeshConnectedToMeshGate))
6281                 goto nla_put_failure;
6282         nla_nest_end(msg, pinfoattr);
6283         genlmsg_end(msg, hdr);
6284         return genlmsg_reply(msg, info);
6285
6286  nla_put_failure:
6287  out:
6288         nlmsg_free(msg);
6289         return -ENOBUFS;
6290 }
6291
6292 static const struct nla_policy
6293 nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
6294         [NL80211_MESHCONF_RETRY_TIMEOUT] =
6295                 NLA_POLICY_RANGE(NLA_U16, 1, 255),
6296         [NL80211_MESHCONF_CONFIRM_TIMEOUT] =
6297                 NLA_POLICY_RANGE(NLA_U16, 1, 255),
6298         [NL80211_MESHCONF_HOLDING_TIMEOUT] =
6299                 NLA_POLICY_RANGE(NLA_U16, 1, 255),
6300         [NL80211_MESHCONF_MAX_PEER_LINKS] =
6301                 NLA_POLICY_RANGE(NLA_U16, 0, 255),
6302         [NL80211_MESHCONF_MAX_RETRIES] = NLA_POLICY_MAX(NLA_U8, 16),
6303         [NL80211_MESHCONF_TTL] = NLA_POLICY_MIN(NLA_U8, 1),
6304         [NL80211_MESHCONF_ELEMENT_TTL] = NLA_POLICY_MIN(NLA_U8, 1),
6305         [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = NLA_POLICY_MAX(NLA_U8, 1),
6306         [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] =
6307                 NLA_POLICY_RANGE(NLA_U32, 1, 255),
6308         [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
6309         [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
6310         [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = NLA_POLICY_MIN(NLA_U16, 1),
6311         [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
6312         [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] =
6313                 NLA_POLICY_MIN(NLA_U16, 1),
6314         [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] =
6315                 NLA_POLICY_MIN(NLA_U16, 1),
6316         [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] =
6317                 NLA_POLICY_MIN(NLA_U16, 1),
6318         [NL80211_MESHCONF_HWMP_ROOTMODE] = NLA_POLICY_MAX(NLA_U8, 4),
6319         [NL80211_MESHCONF_HWMP_RANN_INTERVAL] =
6320                 NLA_POLICY_MIN(NLA_U16, 1),
6321         [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = NLA_POLICY_MAX(NLA_U8, 1),
6322         [NL80211_MESHCONF_FORWARDING] = NLA_POLICY_MAX(NLA_U8, 1),
6323         [NL80211_MESHCONF_RSSI_THRESHOLD] =
6324                 NLA_POLICY_RANGE(NLA_S32, -255, 0),
6325         [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 },
6326         [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 },
6327         [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] =
6328                 NLA_POLICY_MIN(NLA_U16, 1),
6329         [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] =
6330                 NLA_POLICY_MIN(NLA_U16, 1),
6331         [NL80211_MESHCONF_POWER_MODE] =
6332                 NLA_POLICY_RANGE(NLA_U32,
6333                                  NL80211_MESH_POWER_ACTIVE,
6334                                  NL80211_MESH_POWER_MAX),
6335         [NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 },
6336         [NL80211_MESHCONF_PLINK_TIMEOUT] = { .type = NLA_U32 },
6337         [NL80211_MESHCONF_CONNECTED_TO_GATE] = NLA_POLICY_RANGE(NLA_U8, 0, 1),
6338 };
6339
6340 static const struct nla_policy
6341         nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
6342         [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 },
6343         [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
6344         [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
6345         [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
6346         [NL80211_MESH_SETUP_AUTH_PROTOCOL] = { .type = NLA_U8 },
6347         [NL80211_MESH_SETUP_USERSPACE_MPM] = { .type = NLA_FLAG },
6348         [NL80211_MESH_SETUP_IE] =
6349                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
6350                                        IEEE80211_MAX_DATA_LEN),
6351         [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
6352 };
6353
6354 static int nl80211_parse_mesh_config(struct genl_info *info,
6355                                      struct mesh_config *cfg,
6356                                      u32 *mask_out)
6357 {
6358         struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
6359         u32 mask = 0;
6360         u16 ht_opmode;
6361
6362 #define FILL_IN_MESH_PARAM_IF_SET(tb, cfg, param, mask, attr, fn)       \
6363 do {                                                                    \
6364         if (tb[attr]) {                                                 \
6365                 cfg->param = fn(tb[attr]);                              \
6366                 mask |= BIT((attr) - 1);                                \
6367         }                                                               \
6368 } while (0)
6369
6370         if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
6371                 return -EINVAL;
6372         if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX,
6373                              info->attrs[NL80211_ATTR_MESH_CONFIG],
6374                              nl80211_meshconf_params_policy, info->extack))
6375                 return -EINVAL;
6376
6377         /* This makes sure that there aren't more than 32 mesh config
6378          * parameters (otherwise our bitfield scheme would not work.) */
6379         BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
6380
6381         /* Fill in the params struct */
6382         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, mask,
6383                                   NL80211_MESHCONF_RETRY_TIMEOUT, nla_get_u16);
6384         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, mask,
6385                                   NL80211_MESHCONF_CONFIRM_TIMEOUT,
6386                                   nla_get_u16);
6387         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, mask,
6388                                   NL80211_MESHCONF_HOLDING_TIMEOUT,
6389                                   nla_get_u16);
6390         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, mask,
6391                                   NL80211_MESHCONF_MAX_PEER_LINKS,
6392                                   nla_get_u16);
6393         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, mask,
6394                                   NL80211_MESHCONF_MAX_RETRIES, nla_get_u8);
6395         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, mask,
6396                                   NL80211_MESHCONF_TTL, nla_get_u8);
6397         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl, mask,
6398                                   NL80211_MESHCONF_ELEMENT_TTL, nla_get_u8);
6399         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, mask,
6400                                   NL80211_MESHCONF_AUTO_OPEN_PLINKS,
6401                                   nla_get_u8);
6402         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor,
6403                                   mask,
6404                                   NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
6405                                   nla_get_u32);
6406         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, mask,
6407                                   NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
6408                                   nla_get_u8);
6409         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, mask,
6410                                   NL80211_MESHCONF_PATH_REFRESH_TIME,
6411                                   nla_get_u32);
6412         if (mask & BIT(NL80211_MESHCONF_PATH_REFRESH_TIME) &&
6413             (cfg->path_refresh_time < 1 || cfg->path_refresh_time > 65535))
6414                 return -EINVAL;
6415         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, mask,
6416                                   NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
6417                                   nla_get_u16);
6418         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
6419                                   mask,
6420                                   NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
6421                                   nla_get_u32);
6422         if (mask & BIT(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT) &&
6423             (cfg->dot11MeshHWMPactivePathTimeout < 1 ||
6424              cfg->dot11MeshHWMPactivePathTimeout > 65535))
6425                 return -EINVAL;
6426         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval, mask,
6427                                   NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
6428                                   nla_get_u16);
6429         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval, mask,
6430                                   NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
6431                                   nla_get_u16);
6432         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
6433                                   dot11MeshHWMPnetDiameterTraversalTime, mask,
6434                                   NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
6435                                   nla_get_u16);
6436         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, mask,
6437                                   NL80211_MESHCONF_HWMP_ROOTMODE, nla_get_u8);
6438         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, mask,
6439                                   NL80211_MESHCONF_HWMP_RANN_INTERVAL,
6440                                   nla_get_u16);
6441         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshGateAnnouncementProtocol,
6442                                   mask, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
6443                                   nla_get_u8);
6444         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding, mask,
6445                                   NL80211_MESHCONF_FORWARDING, nla_get_u8);
6446         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold, mask,
6447                                   NL80211_MESHCONF_RSSI_THRESHOLD,
6448                                   nla_get_s32);
6449         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConnectedToMeshGate, mask,
6450                                   NL80211_MESHCONF_CONNECTED_TO_GATE,
6451                                   nla_get_u8);
6452         /*
6453          * Check HT operation mode based on
6454          * IEEE 802.11-2016 9.4.2.57 HT Operation element.
6455          */
6456         if (tb[NL80211_MESHCONF_HT_OPMODE]) {
6457                 ht_opmode = nla_get_u16(tb[NL80211_MESHCONF_HT_OPMODE]);
6458
6459                 if (ht_opmode & ~(IEEE80211_HT_OP_MODE_PROTECTION |
6460                                   IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT |
6461                                   IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT))
6462                         return -EINVAL;
6463
6464                 /* NON_HT_STA bit is reserved, but some programs set it */
6465                 ht_opmode &= ~IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT;
6466
6467                 cfg->ht_opmode = ht_opmode;
6468                 mask |= (1 << (NL80211_MESHCONF_HT_OPMODE - 1));
6469         }
6470         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
6471                                   dot11MeshHWMPactivePathToRootTimeout, mask,
6472                                   NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
6473                                   nla_get_u32);
6474         if (mask & BIT(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT) &&
6475             (cfg->dot11MeshHWMPactivePathToRootTimeout < 1 ||
6476              cfg->dot11MeshHWMPactivePathToRootTimeout > 65535))
6477                 return -EINVAL;
6478         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval, mask,
6479                                   NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
6480                                   nla_get_u16);
6481         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPconfirmationInterval,
6482                                   mask,
6483                                   NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
6484                                   nla_get_u16);
6485         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, power_mode, mask,
6486                                   NL80211_MESHCONF_POWER_MODE, nla_get_u32);
6487         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration, mask,
6488                                   NL80211_MESHCONF_AWAKE_WINDOW, nla_get_u16);
6489         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, plink_timeout, mask,
6490                                   NL80211_MESHCONF_PLINK_TIMEOUT, nla_get_u32);
6491         if (mask_out)
6492                 *mask_out = mask;
6493
6494         return 0;
6495
6496 #undef FILL_IN_MESH_PARAM_IF_SET
6497 }
6498
6499 static int nl80211_parse_mesh_setup(struct genl_info *info,
6500                                      struct mesh_setup *setup)
6501 {
6502         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6503         struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
6504
6505         if (!info->attrs[NL80211_ATTR_MESH_SETUP])
6506                 return -EINVAL;
6507         if (nla_parse_nested(tb, NL80211_MESH_SETUP_ATTR_MAX,
6508                              info->attrs[NL80211_ATTR_MESH_SETUP],
6509                              nl80211_mesh_setup_params_policy, info->extack))
6510                 return -EINVAL;
6511
6512         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])
6513                 setup->sync_method =
6514                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ?
6515                  IEEE80211_SYNC_METHOD_VENDOR :
6516                  IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET;
6517
6518         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
6519                 setup->path_sel_proto =
6520                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
6521                  IEEE80211_PATH_PROTOCOL_VENDOR :
6522                  IEEE80211_PATH_PROTOCOL_HWMP;
6523
6524         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
6525                 setup->path_metric =
6526                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
6527                  IEEE80211_PATH_METRIC_VENDOR :
6528                  IEEE80211_PATH_METRIC_AIRTIME;
6529
6530         if (tb[NL80211_MESH_SETUP_IE]) {
6531                 struct nlattr *ieattr =
6532                         tb[NL80211_MESH_SETUP_IE];
6533                 setup->ie = nla_data(ieattr);
6534                 setup->ie_len = nla_len(ieattr);
6535         }
6536         if (tb[NL80211_MESH_SETUP_USERSPACE_MPM] &&
6537             !(rdev->wiphy.features & NL80211_FEATURE_USERSPACE_MPM))
6538                 return -EINVAL;
6539         setup->user_mpm = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_MPM]);
6540         setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
6541         setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
6542         if (setup->is_secure)
6543                 setup->user_mpm = true;
6544
6545         if (tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]) {
6546                 if (!setup->user_mpm)
6547                         return -EINVAL;
6548                 setup->auth_id =
6549                         nla_get_u8(tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]);
6550         }
6551
6552         return 0;
6553 }
6554
6555 static int nl80211_update_mesh_config(struct sk_buff *skb,
6556                                       struct genl_info *info)
6557 {
6558         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6559         struct net_device *dev = info->user_ptr[1];
6560         struct wireless_dev *wdev = dev->ieee80211_ptr;
6561         struct mesh_config cfg;
6562         u32 mask;
6563         int err;
6564
6565         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
6566                 return -EOPNOTSUPP;
6567
6568         if (!rdev->ops->update_mesh_config)
6569                 return -EOPNOTSUPP;
6570
6571         err = nl80211_parse_mesh_config(info, &cfg, &mask);
6572         if (err)
6573                 return err;
6574
6575         wdev_lock(wdev);
6576         if (!wdev->mesh_id_len)
6577                 err = -ENOLINK;
6578
6579         if (!err)
6580                 err = rdev_update_mesh_config(rdev, dev, mask, &cfg);
6581
6582         wdev_unlock(wdev);
6583
6584         return err;
6585 }
6586
6587 static int nl80211_put_regdom(const struct ieee80211_regdomain *regdom,
6588                               struct sk_buff *msg)
6589 {
6590         struct nlattr *nl_reg_rules;
6591         unsigned int i;
6592
6593         if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, regdom->alpha2) ||
6594             (regdom->dfs_region &&
6595              nla_put_u8(msg, NL80211_ATTR_DFS_REGION, regdom->dfs_region)))
6596                 goto nla_put_failure;
6597
6598         nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES);
6599         if (!nl_reg_rules)
6600                 goto nla_put_failure;
6601
6602         for (i = 0; i < regdom->n_reg_rules; i++) {
6603                 struct nlattr *nl_reg_rule;
6604                 const struct ieee80211_reg_rule *reg_rule;
6605                 const struct ieee80211_freq_range *freq_range;
6606                 const struct ieee80211_power_rule *power_rule;
6607                 unsigned int max_bandwidth_khz;
6608
6609                 reg_rule = &regdom->reg_rules[i];
6610                 freq_range = &reg_rule->freq_range;
6611                 power_rule = &reg_rule->power_rule;
6612
6613                 nl_reg_rule = nla_nest_start(msg, i);
6614                 if (!nl_reg_rule)
6615                         goto nla_put_failure;
6616
6617                 max_bandwidth_khz = freq_range->max_bandwidth_khz;
6618                 if (!max_bandwidth_khz)
6619                         max_bandwidth_khz = reg_get_max_bandwidth(regdom,
6620                                                                   reg_rule);
6621
6622                 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS,
6623                                 reg_rule->flags) ||
6624                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START,
6625                                 freq_range->start_freq_khz) ||
6626                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END,
6627                                 freq_range->end_freq_khz) ||
6628                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
6629                                 max_bandwidth_khz) ||
6630                     nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
6631                                 power_rule->max_antenna_gain) ||
6632                     nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
6633                                 power_rule->max_eirp) ||
6634                     nla_put_u32(msg, NL80211_ATTR_DFS_CAC_TIME,
6635                                 reg_rule->dfs_cac_ms))
6636                         goto nla_put_failure;
6637
6638                 nla_nest_end(msg, nl_reg_rule);
6639         }
6640
6641         nla_nest_end(msg, nl_reg_rules);
6642         return 0;
6643
6644 nla_put_failure:
6645         return -EMSGSIZE;
6646 }
6647
6648 static int nl80211_get_reg_do(struct sk_buff *skb, struct genl_info *info)
6649 {
6650         const struct ieee80211_regdomain *regdom = NULL;
6651         struct cfg80211_registered_device *rdev;
6652         struct wiphy *wiphy = NULL;
6653         struct sk_buff *msg;
6654         void *hdr;
6655
6656         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6657         if (!msg)
6658                 return -ENOBUFS;
6659
6660         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
6661                              NL80211_CMD_GET_REG);
6662         if (!hdr)
6663                 goto put_failure;
6664
6665         if (info->attrs[NL80211_ATTR_WIPHY]) {
6666                 bool self_managed;
6667
6668                 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
6669                 if (IS_ERR(rdev)) {
6670                         nlmsg_free(msg);
6671                         return PTR_ERR(rdev);
6672                 }
6673
6674                 wiphy = &rdev->wiphy;
6675                 self_managed = wiphy->regulatory_flags &
6676                                REGULATORY_WIPHY_SELF_MANAGED;
6677                 regdom = get_wiphy_regdom(wiphy);
6678
6679                 /* a self-managed-reg device must have a private regdom */
6680                 if (WARN_ON(!regdom && self_managed)) {
6681                         nlmsg_free(msg);
6682                         return -EINVAL;
6683                 }
6684
6685                 if (regdom &&
6686                     nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
6687                         goto nla_put_failure;
6688         }
6689
6690         if (!wiphy && reg_last_request_cell_base() &&
6691             nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
6692                         NL80211_USER_REG_HINT_CELL_BASE))
6693                 goto nla_put_failure;
6694
6695         rcu_read_lock();
6696
6697         if (!regdom)
6698                 regdom = rcu_dereference(cfg80211_regdomain);
6699
6700         if (nl80211_put_regdom(regdom, msg))
6701                 goto nla_put_failure_rcu;
6702
6703         rcu_read_unlock();
6704
6705         genlmsg_end(msg, hdr);
6706         return genlmsg_reply(msg, info);
6707
6708 nla_put_failure_rcu:
6709         rcu_read_unlock();
6710 nla_put_failure:
6711 put_failure:
6712         nlmsg_free(msg);
6713         return -EMSGSIZE;
6714 }
6715
6716 static int nl80211_send_regdom(struct sk_buff *msg, struct netlink_callback *cb,
6717                                u32 seq, int flags, struct wiphy *wiphy,
6718                                const struct ieee80211_regdomain *regdom)
6719 {
6720         void *hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
6721                                    NL80211_CMD_GET_REG);
6722
6723         if (!hdr)
6724                 return -1;
6725
6726         genl_dump_check_consistent(cb, hdr);
6727
6728         if (nl80211_put_regdom(regdom, msg))
6729                 goto nla_put_failure;
6730
6731         if (!wiphy && reg_last_request_cell_base() &&
6732             nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
6733                         NL80211_USER_REG_HINT_CELL_BASE))
6734                 goto nla_put_failure;
6735
6736         if (wiphy &&
6737             nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
6738                 goto nla_put_failure;
6739
6740         if (wiphy && wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
6741             nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
6742                 goto nla_put_failure;
6743
6744         genlmsg_end(msg, hdr);
6745         return 0;
6746
6747 nla_put_failure:
6748         genlmsg_cancel(msg, hdr);
6749         return -EMSGSIZE;
6750 }
6751
6752 static int nl80211_get_reg_dump(struct sk_buff *skb,
6753                                 struct netlink_callback *cb)
6754 {
6755         const struct ieee80211_regdomain *regdom = NULL;
6756         struct cfg80211_registered_device *rdev;
6757         int err, reg_idx, start = cb->args[2];
6758
6759         rtnl_lock();
6760
6761         if (cfg80211_regdomain && start == 0) {
6762                 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
6763                                           NLM_F_MULTI, NULL,
6764                                           rtnl_dereference(cfg80211_regdomain));
6765                 if (err < 0)
6766                         goto out_err;
6767         }
6768
6769         /* the global regdom is idx 0 */
6770         reg_idx = 1;
6771         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
6772                 regdom = get_wiphy_regdom(&rdev->wiphy);
6773                 if (!regdom)
6774                         continue;
6775
6776                 if (++reg_idx <= start)
6777                         continue;
6778
6779                 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
6780                                           NLM_F_MULTI, &rdev->wiphy, regdom);
6781                 if (err < 0) {
6782                         reg_idx--;
6783                         break;
6784                 }
6785         }
6786
6787         cb->args[2] = reg_idx;
6788         err = skb->len;
6789 out_err:
6790         rtnl_unlock();
6791         return err;
6792 }
6793
6794 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
6795 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
6796         [NL80211_ATTR_REG_RULE_FLAGS]           = { .type = NLA_U32 },
6797         [NL80211_ATTR_FREQ_RANGE_START]         = { .type = NLA_U32 },
6798         [NL80211_ATTR_FREQ_RANGE_END]           = { .type = NLA_U32 },
6799         [NL80211_ATTR_FREQ_RANGE_MAX_BW]        = { .type = NLA_U32 },
6800         [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]  = { .type = NLA_U32 },
6801         [NL80211_ATTR_POWER_RULE_MAX_EIRP]      = { .type = NLA_U32 },
6802         [NL80211_ATTR_DFS_CAC_TIME]             = { .type = NLA_U32 },
6803 };
6804
6805 static int parse_reg_rule(struct nlattr *tb[],
6806         struct ieee80211_reg_rule *reg_rule)
6807 {
6808         struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
6809         struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
6810
6811         if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
6812                 return -EINVAL;
6813         if (!tb[NL80211_ATTR_FREQ_RANGE_START])
6814                 return -EINVAL;
6815         if (!tb[NL80211_ATTR_FREQ_RANGE_END])
6816                 return -EINVAL;
6817         if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
6818                 return -EINVAL;
6819         if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
6820                 return -EINVAL;
6821
6822         reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
6823
6824         freq_range->start_freq_khz =
6825                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
6826         freq_range->end_freq_khz =
6827                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
6828         freq_range->max_bandwidth_khz =
6829                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
6830
6831         power_rule->max_eirp =
6832                 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
6833
6834         if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
6835                 power_rule->max_antenna_gain =
6836                         nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
6837
6838         if (tb[NL80211_ATTR_DFS_CAC_TIME])
6839                 reg_rule->dfs_cac_ms =
6840                         nla_get_u32(tb[NL80211_ATTR_DFS_CAC_TIME]);
6841
6842         return 0;
6843 }
6844
6845 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
6846 {
6847         struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
6848         struct nlattr *nl_reg_rule;
6849         char *alpha2;
6850         int rem_reg_rules, r;
6851         u32 num_rules = 0, rule_idx = 0, size_of_regd;
6852         enum nl80211_dfs_regions dfs_region = NL80211_DFS_UNSET;
6853         struct ieee80211_regdomain *rd;
6854
6855         if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
6856                 return -EINVAL;
6857
6858         if (!info->attrs[NL80211_ATTR_REG_RULES])
6859                 return -EINVAL;
6860
6861         alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
6862
6863         if (info->attrs[NL80211_ATTR_DFS_REGION])
6864                 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]);
6865
6866         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
6867                             rem_reg_rules) {
6868                 num_rules++;
6869                 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
6870                         return -EINVAL;
6871         }
6872
6873         if (!reg_is_valid_request(alpha2))
6874                 return -EINVAL;
6875
6876         size_of_regd = sizeof(struct ieee80211_regdomain) +
6877                        num_rules * sizeof(struct ieee80211_reg_rule);
6878
6879         rd = kzalloc(size_of_regd, GFP_KERNEL);
6880         if (!rd)
6881                 return -ENOMEM;
6882
6883         rd->n_reg_rules = num_rules;
6884         rd->alpha2[0] = alpha2[0];
6885         rd->alpha2[1] = alpha2[1];
6886
6887         /*
6888          * Disable DFS master mode if the DFS region was
6889          * not supported or known on this kernel.
6890          */
6891         if (reg_supported_dfs_region(dfs_region))
6892                 rd->dfs_region = dfs_region;
6893
6894         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
6895                             rem_reg_rules) {
6896                 r = nla_parse_nested(tb, NL80211_REG_RULE_ATTR_MAX,
6897                                      nl_reg_rule, reg_rule_policy,
6898                                      info->extack);
6899                 if (r)
6900                         goto bad_reg;
6901                 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
6902                 if (r)
6903                         goto bad_reg;
6904
6905                 rule_idx++;
6906
6907                 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
6908                         r = -EINVAL;
6909                         goto bad_reg;
6910                 }
6911         }
6912
6913         /* set_regdom takes ownership of rd */
6914         return set_regdom(rd, REGD_SOURCE_CRDA);
6915  bad_reg:
6916         kfree(rd);
6917         return r;
6918 }
6919 #endif /* CONFIG_CFG80211_CRDA_SUPPORT */
6920
6921 static int validate_scan_freqs(struct nlattr *freqs)
6922 {
6923         struct nlattr *attr1, *attr2;
6924         int n_channels = 0, tmp1, tmp2;
6925
6926         nla_for_each_nested(attr1, freqs, tmp1)
6927                 if (nla_len(attr1) != sizeof(u32))
6928                         return 0;
6929
6930         nla_for_each_nested(attr1, freqs, tmp1) {
6931                 n_channels++;
6932                 /*
6933                  * Some hardware has a limited channel list for
6934                  * scanning, and it is pretty much nonsensical
6935                  * to scan for a channel twice, so disallow that
6936                  * and don't require drivers to check that the
6937                  * channel list they get isn't longer than what
6938                  * they can scan, as long as they can scan all
6939                  * the channels they registered at once.
6940                  */
6941                 nla_for_each_nested(attr2, freqs, tmp2)
6942                         if (attr1 != attr2 &&
6943                             nla_get_u32(attr1) == nla_get_u32(attr2))
6944                                 return 0;
6945         }
6946
6947         return n_channels;
6948 }
6949
6950 static bool is_band_valid(struct wiphy *wiphy, enum nl80211_band b)
6951 {
6952         return b < NUM_NL80211_BANDS && wiphy->bands[b];
6953 }
6954
6955 static int parse_bss_select(struct nlattr *nla, struct wiphy *wiphy,
6956                             struct cfg80211_bss_selection *bss_select)
6957 {
6958         struct nlattr *attr[NL80211_BSS_SELECT_ATTR_MAX + 1];
6959         struct nlattr *nest;
6960         int err;
6961         bool found = false;
6962         int i;
6963
6964         /* only process one nested attribute */
6965         nest = nla_data(nla);
6966         if (!nla_ok(nest, nla_len(nest)))
6967                 return -EINVAL;
6968
6969         err = nla_parse_nested(attr, NL80211_BSS_SELECT_ATTR_MAX, nest,
6970                                nl80211_bss_select_policy, NULL);
6971         if (err)
6972                 return err;
6973
6974         /* only one attribute may be given */
6975         for (i = 0; i <= NL80211_BSS_SELECT_ATTR_MAX; i++) {
6976                 if (attr[i]) {
6977                         if (found)
6978                                 return -EINVAL;
6979                         found = true;
6980                 }
6981         }
6982
6983         bss_select->behaviour = __NL80211_BSS_SELECT_ATTR_INVALID;
6984
6985         if (attr[NL80211_BSS_SELECT_ATTR_RSSI])
6986                 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI;
6987
6988         if (attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]) {
6989                 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_BAND_PREF;
6990                 bss_select->param.band_pref =
6991                         nla_get_u32(attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]);
6992                 if (!is_band_valid(wiphy, bss_select->param.band_pref))
6993                         return -EINVAL;
6994         }
6995
6996         if (attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]) {
6997                 struct nl80211_bss_select_rssi_adjust *adj_param;
6998
6999                 adj_param = nla_data(attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]);
7000                 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI_ADJUST;
7001                 bss_select->param.adjust.band = adj_param->band;
7002                 bss_select->param.adjust.delta = adj_param->delta;
7003                 if (!is_band_valid(wiphy, bss_select->param.adjust.band))
7004                         return -EINVAL;
7005         }
7006
7007         /* user-space did not provide behaviour attribute */
7008         if (bss_select->behaviour == __NL80211_BSS_SELECT_ATTR_INVALID)
7009                 return -EINVAL;
7010
7011         if (!(wiphy->bss_select_support & BIT(bss_select->behaviour)))
7012                 return -EINVAL;
7013
7014         return 0;
7015 }
7016
7017 int nl80211_parse_random_mac(struct nlattr **attrs,
7018                              u8 *mac_addr, u8 *mac_addr_mask)
7019 {
7020         int i;
7021
7022         if (!attrs[NL80211_ATTR_MAC] && !attrs[NL80211_ATTR_MAC_MASK]) {
7023                 eth_zero_addr(mac_addr);
7024                 eth_zero_addr(mac_addr_mask);
7025                 mac_addr[0] = 0x2;
7026                 mac_addr_mask[0] = 0x3;
7027
7028                 return 0;
7029         }
7030
7031         /* need both or none */
7032         if (!attrs[NL80211_ATTR_MAC] || !attrs[NL80211_ATTR_MAC_MASK])
7033                 return -EINVAL;
7034
7035         memcpy(mac_addr, nla_data(attrs[NL80211_ATTR_MAC]), ETH_ALEN);
7036         memcpy(mac_addr_mask, nla_data(attrs[NL80211_ATTR_MAC_MASK]), ETH_ALEN);
7037
7038         /* don't allow or configure an mcast address */
7039         if (!is_multicast_ether_addr(mac_addr_mask) ||
7040             is_multicast_ether_addr(mac_addr))
7041                 return -EINVAL;
7042
7043         /*
7044          * allow users to pass a MAC address that has bits set outside
7045          * of the mask, but don't bother drivers with having to deal
7046          * with such bits
7047          */
7048         for (i = 0; i < ETH_ALEN; i++)
7049                 mac_addr[i] &= mac_addr_mask[i];
7050
7051         return 0;
7052 }
7053
7054 static bool cfg80211_off_channel_oper_allowed(struct wireless_dev *wdev)
7055 {
7056         ASSERT_WDEV_LOCK(wdev);
7057
7058         if (!cfg80211_beaconing_iface_active(wdev))
7059                 return true;
7060
7061         if (!(wdev->chandef.chan->flags & IEEE80211_CHAN_RADAR))
7062                 return true;
7063
7064         return regulatory_pre_cac_allowed(wdev->wiphy);
7065 }
7066
7067 static bool nl80211_check_scan_feat(struct wiphy *wiphy, u32 flags, u32 flag,
7068                                     enum nl80211_ext_feature_index feat)
7069 {
7070         if (!(flags & flag))
7071                 return true;
7072         if (wiphy_ext_feature_isset(wiphy, feat))
7073                 return true;
7074         return false;
7075 }
7076
7077 static int
7078 nl80211_check_scan_flags(struct wiphy *wiphy, struct wireless_dev *wdev,
7079                          void *request, struct nlattr **attrs,
7080                          bool is_sched_scan)
7081 {
7082         u8 *mac_addr, *mac_addr_mask;
7083         u32 *flags;
7084         enum nl80211_feature_flags randomness_flag;
7085
7086         if (!attrs[NL80211_ATTR_SCAN_FLAGS])
7087                 return 0;
7088
7089         if (is_sched_scan) {
7090                 struct cfg80211_sched_scan_request *req = request;
7091
7092                 randomness_flag = wdev ?
7093                                   NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR :
7094                                   NL80211_FEATURE_ND_RANDOM_MAC_ADDR;
7095                 flags = &req->flags;
7096                 mac_addr = req->mac_addr;
7097                 mac_addr_mask = req->mac_addr_mask;
7098         } else {
7099                 struct cfg80211_scan_request *req = request;
7100
7101                 randomness_flag = NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR;
7102                 flags = &req->flags;
7103                 mac_addr = req->mac_addr;
7104                 mac_addr_mask = req->mac_addr_mask;
7105         }
7106
7107         *flags = nla_get_u32(attrs[NL80211_ATTR_SCAN_FLAGS]);
7108
7109         if (((*flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
7110              !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) ||
7111             !nl80211_check_scan_feat(wiphy, *flags,
7112                                      NL80211_SCAN_FLAG_LOW_SPAN,
7113                                      NL80211_EXT_FEATURE_LOW_SPAN_SCAN) ||
7114             !nl80211_check_scan_feat(wiphy, *flags,
7115                                      NL80211_SCAN_FLAG_LOW_POWER,
7116                                      NL80211_EXT_FEATURE_LOW_POWER_SCAN) ||
7117             !nl80211_check_scan_feat(wiphy, *flags,
7118                                      NL80211_SCAN_FLAG_HIGH_ACCURACY,
7119                                      NL80211_EXT_FEATURE_HIGH_ACCURACY_SCAN) ||
7120             !nl80211_check_scan_feat(wiphy, *flags,
7121                                      NL80211_SCAN_FLAG_FILS_MAX_CHANNEL_TIME,
7122                                      NL80211_EXT_FEATURE_FILS_MAX_CHANNEL_TIME) ||
7123             !nl80211_check_scan_feat(wiphy, *flags,
7124                                      NL80211_SCAN_FLAG_ACCEPT_BCAST_PROBE_RESP,
7125                                      NL80211_EXT_FEATURE_ACCEPT_BCAST_PROBE_RESP) ||
7126             !nl80211_check_scan_feat(wiphy, *flags,
7127                                      NL80211_SCAN_FLAG_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION,
7128                                      NL80211_EXT_FEATURE_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION) ||
7129             !nl80211_check_scan_feat(wiphy, *flags,
7130                                      NL80211_SCAN_FLAG_OCE_PROBE_REQ_HIGH_TX_RATE,
7131                                      NL80211_EXT_FEATURE_OCE_PROBE_REQ_HIGH_TX_RATE) ||
7132             !nl80211_check_scan_feat(wiphy, *flags,
7133                                      NL80211_SCAN_FLAG_RANDOM_SN,
7134                                      NL80211_EXT_FEATURE_SCAN_RANDOM_SN) ||
7135             !nl80211_check_scan_feat(wiphy, *flags,
7136                                      NL80211_SCAN_FLAG_MIN_PREQ_CONTENT,
7137                                      NL80211_EXT_FEATURE_SCAN_MIN_PREQ_CONTENT))
7138                 return -EOPNOTSUPP;
7139
7140         if (*flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
7141                 int err;
7142
7143                 if (!(wiphy->features & randomness_flag) ||
7144                     (wdev && wdev->current_bss))
7145                         return -EOPNOTSUPP;
7146
7147                 err = nl80211_parse_random_mac(attrs, mac_addr, mac_addr_mask);
7148                 if (err)
7149                         return err;
7150         }
7151
7152         return 0;
7153 }
7154
7155 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
7156 {
7157         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7158         struct wireless_dev *wdev = info->user_ptr[1];
7159         struct cfg80211_scan_request *request;
7160         struct nlattr *attr;
7161         struct wiphy *wiphy;
7162         int err, tmp, n_ssids = 0, n_channels, i;
7163         size_t ie_len;
7164
7165         wiphy = &rdev->wiphy;
7166
7167         if (wdev->iftype == NL80211_IFTYPE_NAN)
7168                 return -EOPNOTSUPP;
7169
7170         if (!rdev->ops->scan)
7171                 return -EOPNOTSUPP;
7172
7173         if (rdev->scan_req || rdev->scan_msg) {
7174                 err = -EBUSY;
7175                 goto unlock;
7176         }
7177
7178         if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
7179                 n_channels = validate_scan_freqs(
7180                                 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
7181                 if (!n_channels) {
7182                         err = -EINVAL;
7183                         goto unlock;
7184                 }
7185         } else {
7186                 n_channels = ieee80211_get_num_supported_channels(wiphy);
7187         }
7188
7189         if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
7190                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
7191                         n_ssids++;
7192
7193         if (n_ssids > wiphy->max_scan_ssids) {
7194                 err = -EINVAL;
7195                 goto unlock;
7196         }
7197
7198         if (info->attrs[NL80211_ATTR_IE])
7199                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7200         else
7201                 ie_len = 0;
7202
7203         if (ie_len > wiphy->max_scan_ie_len) {
7204                 err = -EINVAL;
7205                 goto unlock;
7206         }
7207
7208         request = kzalloc(sizeof(*request)
7209                         + sizeof(*request->ssids) * n_ssids
7210                         + sizeof(*request->channels) * n_channels
7211                         + ie_len, GFP_KERNEL);
7212         if (!request) {
7213                 err = -ENOMEM;
7214                 goto unlock;
7215         }
7216
7217         if (n_ssids)
7218                 request->ssids = (void *)&request->channels[n_channels];
7219         request->n_ssids = n_ssids;
7220         if (ie_len) {
7221                 if (n_ssids)
7222                         request->ie = (void *)(request->ssids + n_ssids);
7223                 else
7224                         request->ie = (void *)(request->channels + n_channels);
7225         }
7226
7227         i = 0;
7228         if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
7229                 /* user specified, bail out if channel not found */
7230                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) {
7231                         struct ieee80211_channel *chan;
7232
7233                         chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
7234
7235                         if (!chan) {
7236                                 err = -EINVAL;
7237                                 goto out_free;
7238                         }
7239
7240                         /* ignore disabled channels */
7241                         if (chan->flags & IEEE80211_CHAN_DISABLED)
7242                                 continue;
7243
7244                         request->channels[i] = chan;
7245                         i++;
7246                 }
7247         } else {
7248                 enum nl80211_band band;
7249
7250                 /* all channels */
7251                 for (band = 0; band < NUM_NL80211_BANDS; band++) {
7252                         int j;
7253
7254                         if (!wiphy->bands[band])
7255                                 continue;
7256                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
7257                                 struct ieee80211_channel *chan;
7258
7259                                 chan = &wiphy->bands[band]->channels[j];
7260
7261                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
7262                                         continue;
7263
7264                                 request->channels[i] = chan;
7265                                 i++;
7266                         }
7267                 }
7268         }
7269
7270         if (!i) {
7271                 err = -EINVAL;
7272                 goto out_free;
7273         }
7274
7275         request->n_channels = i;
7276
7277         wdev_lock(wdev);
7278         if (!cfg80211_off_channel_oper_allowed(wdev)) {
7279                 struct ieee80211_channel *chan;
7280
7281                 if (request->n_channels != 1) {
7282                         wdev_unlock(wdev);
7283                         err = -EBUSY;
7284                         goto out_free;
7285                 }
7286
7287                 chan = request->channels[0];
7288                 if (chan->center_freq != wdev->chandef.chan->center_freq) {
7289                         wdev_unlock(wdev);
7290                         err = -EBUSY;
7291                         goto out_free;
7292                 }
7293         }
7294         wdev_unlock(wdev);
7295
7296         i = 0;
7297         if (n_ssids) {
7298                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
7299                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
7300                                 err = -EINVAL;
7301                                 goto out_free;
7302                         }
7303                         request->ssids[i].ssid_len = nla_len(attr);
7304                         memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
7305                         i++;
7306                 }
7307         }
7308
7309         if (info->attrs[NL80211_ATTR_IE]) {
7310                 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7311                 memcpy((void *)request->ie,
7312                        nla_data(info->attrs[NL80211_ATTR_IE]),
7313                        request->ie_len);
7314         }
7315
7316         for (i = 0; i < NUM_NL80211_BANDS; i++)
7317                 if (wiphy->bands[i])
7318                         request->rates[i] =
7319                                 (1 << wiphy->bands[i]->n_bitrates) - 1;
7320
7321         if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
7322                 nla_for_each_nested(attr,
7323                                     info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
7324                                     tmp) {
7325                         enum nl80211_band band = nla_type(attr);
7326
7327                         if (band < 0 || band >= NUM_NL80211_BANDS) {
7328                                 err = -EINVAL;
7329                                 goto out_free;
7330                         }
7331
7332                         if (!wiphy->bands[band])
7333                                 continue;
7334
7335                         err = ieee80211_get_ratemask(wiphy->bands[band],
7336                                                      nla_data(attr),
7337                                                      nla_len(attr),
7338                                                      &request->rates[band]);
7339                         if (err)
7340                                 goto out_free;
7341                 }
7342         }
7343
7344         if (info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]) {
7345                 if (!wiphy_ext_feature_isset(wiphy,
7346                                         NL80211_EXT_FEATURE_SET_SCAN_DWELL)) {
7347                         err = -EOPNOTSUPP;
7348                         goto out_free;
7349                 }
7350
7351                 request->duration =
7352                         nla_get_u16(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]);
7353                 request->duration_mandatory =
7354                         nla_get_flag(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION_MANDATORY]);
7355         }
7356
7357         err = nl80211_check_scan_flags(wiphy, wdev, request, info->attrs,
7358                                        false);
7359         if (err)
7360                 goto out_free;
7361
7362         request->no_cck =
7363                 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
7364
7365         /* Initial implementation used NL80211_ATTR_MAC to set the specific
7366          * BSSID to scan for. This was problematic because that same attribute
7367          * was already used for another purpose (local random MAC address). The
7368          * NL80211_ATTR_BSSID attribute was added to fix this. For backwards
7369          * compatibility with older userspace components, also use the
7370          * NL80211_ATTR_MAC value here if it can be determined to be used for
7371          * the specific BSSID use case instead of the random MAC address
7372          * (NL80211_ATTR_SCAN_FLAGS is used to enable random MAC address use).
7373          */
7374         if (info->attrs[NL80211_ATTR_BSSID])
7375                 memcpy(request->bssid,
7376                        nla_data(info->attrs[NL80211_ATTR_BSSID]), ETH_ALEN);
7377         else if (!(request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) &&
7378                  info->attrs[NL80211_ATTR_MAC])
7379                 memcpy(request->bssid, nla_data(info->attrs[NL80211_ATTR_MAC]),
7380                        ETH_ALEN);
7381         else
7382                 eth_broadcast_addr(request->bssid);
7383
7384         request->wdev = wdev;
7385         request->wiphy = &rdev->wiphy;
7386         request->scan_start = jiffies;
7387
7388         rdev->scan_req = request;
7389         err = rdev_scan(rdev, request);
7390
7391         if (!err) {
7392                 nl80211_send_scan_start(rdev, wdev);
7393                 if (wdev->netdev)
7394                         dev_hold(wdev->netdev);
7395         } else {
7396  out_free:
7397                 rdev->scan_req = NULL;
7398                 kfree(request);
7399         }
7400
7401  unlock:
7402         return err;
7403 }
7404
7405 static int nl80211_abort_scan(struct sk_buff *skb, struct genl_info *info)
7406 {
7407         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7408         struct wireless_dev *wdev = info->user_ptr[1];
7409
7410         if (!rdev->ops->abort_scan)
7411                 return -EOPNOTSUPP;
7412
7413         if (rdev->scan_msg)
7414                 return 0;
7415
7416         if (!rdev->scan_req)
7417                 return -ENOENT;
7418
7419         rdev_abort_scan(rdev, wdev);
7420         return 0;
7421 }
7422
7423 static int
7424 nl80211_parse_sched_scan_plans(struct wiphy *wiphy, int n_plans,
7425                                struct cfg80211_sched_scan_request *request,
7426                                struct nlattr **attrs)
7427 {
7428         int tmp, err, i = 0;
7429         struct nlattr *attr;
7430
7431         if (!attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
7432                 u32 interval;
7433
7434                 /*
7435                  * If scan plans are not specified,
7436                  * %NL80211_ATTR_SCHED_SCAN_INTERVAL will be specified. In this
7437                  * case one scan plan will be set with the specified scan
7438                  * interval and infinite number of iterations.
7439                  */
7440                 interval = nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
7441                 if (!interval)
7442                         return -EINVAL;
7443
7444                 request->scan_plans[0].interval =
7445                         DIV_ROUND_UP(interval, MSEC_PER_SEC);
7446                 if (!request->scan_plans[0].interval)
7447                         return -EINVAL;
7448
7449                 if (request->scan_plans[0].interval >
7450                     wiphy->max_sched_scan_plan_interval)
7451                         request->scan_plans[0].interval =
7452                                 wiphy->max_sched_scan_plan_interval;
7453
7454                 return 0;
7455         }
7456
7457         nla_for_each_nested(attr, attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp) {
7458                 struct nlattr *plan[NL80211_SCHED_SCAN_PLAN_MAX + 1];
7459
7460                 if (WARN_ON(i >= n_plans))
7461                         return -EINVAL;
7462
7463                 err = nla_parse_nested(plan, NL80211_SCHED_SCAN_PLAN_MAX,
7464                                        attr, nl80211_plan_policy, NULL);
7465                 if (err)
7466                         return err;
7467
7468                 if (!plan[NL80211_SCHED_SCAN_PLAN_INTERVAL])
7469                         return -EINVAL;
7470
7471                 request->scan_plans[i].interval =
7472                         nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_INTERVAL]);
7473                 if (!request->scan_plans[i].interval ||
7474                     request->scan_plans[i].interval >
7475                     wiphy->max_sched_scan_plan_interval)
7476                         return -EINVAL;
7477
7478                 if (plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]) {
7479                         request->scan_plans[i].iterations =
7480                                 nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]);
7481                         if (!request->scan_plans[i].iterations ||
7482                             (request->scan_plans[i].iterations >
7483                              wiphy->max_sched_scan_plan_iterations))
7484                                 return -EINVAL;
7485                 } else if (i < n_plans - 1) {
7486                         /*
7487                          * All scan plans but the last one must specify
7488                          * a finite number of iterations
7489                          */
7490                         return -EINVAL;
7491                 }
7492
7493                 i++;
7494         }
7495
7496         /*
7497          * The last scan plan must not specify the number of
7498          * iterations, it is supposed to run infinitely
7499          */
7500         if (request->scan_plans[n_plans - 1].iterations)
7501                 return  -EINVAL;
7502
7503         return 0;
7504 }
7505
7506 static struct cfg80211_sched_scan_request *
7507 nl80211_parse_sched_scan(struct wiphy *wiphy, struct wireless_dev *wdev,
7508                          struct nlattr **attrs, int max_match_sets)
7509 {
7510         struct cfg80211_sched_scan_request *request;
7511         struct nlattr *attr;
7512         int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i, n_plans = 0;
7513         enum nl80211_band band;
7514         size_t ie_len;
7515         struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
7516         s32 default_match_rssi = NL80211_SCAN_RSSI_THOLD_OFF;
7517
7518         if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
7519                 n_channels = validate_scan_freqs(
7520                                 attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
7521                 if (!n_channels)
7522                         return ERR_PTR(-EINVAL);
7523         } else {
7524                 n_channels = ieee80211_get_num_supported_channels(wiphy);
7525         }
7526
7527         if (attrs[NL80211_ATTR_SCAN_SSIDS])
7528                 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
7529                                     tmp)
7530                         n_ssids++;
7531
7532         if (n_ssids > wiphy->max_sched_scan_ssids)
7533                 return ERR_PTR(-EINVAL);
7534
7535         /*
7536          * First, count the number of 'real' matchsets. Due to an issue with
7537          * the old implementation, matchsets containing only the RSSI attribute
7538          * (NL80211_SCHED_SCAN_MATCH_ATTR_RSSI) are considered as the 'default'
7539          * RSSI for all matchsets, rather than their own matchset for reporting
7540          * all APs with a strong RSSI. This is needed to be compatible with
7541          * older userspace that treated a matchset with only the RSSI as the
7542          * global RSSI for all other matchsets - if there are other matchsets.
7543          */
7544         if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
7545                 nla_for_each_nested(attr,
7546                                     attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
7547                                     tmp) {
7548                         struct nlattr *rssi;
7549
7550                         err = nla_parse_nested(tb,
7551                                                NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
7552                                                attr, nl80211_match_policy,
7553                                                NULL);
7554                         if (err)
7555                                 return ERR_PTR(err);
7556
7557                         /* SSID and BSSID are mutually exclusive */
7558                         if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID] &&
7559                             tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID])
7560                                 return ERR_PTR(-EINVAL);
7561
7562                         /* add other standalone attributes here */
7563                         if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID] ||
7564                             tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID]) {
7565                                 n_match_sets++;
7566                                 continue;
7567                         }
7568                         rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
7569                         if (rssi)
7570                                 default_match_rssi = nla_get_s32(rssi);
7571                 }
7572         }
7573
7574         /* However, if there's no other matchset, add the RSSI one */
7575         if (!n_match_sets && default_match_rssi != NL80211_SCAN_RSSI_THOLD_OFF)
7576                 n_match_sets = 1;
7577
7578         if (n_match_sets > max_match_sets)
7579                 return ERR_PTR(-EINVAL);
7580
7581         if (attrs[NL80211_ATTR_IE])
7582                 ie_len = nla_len(attrs[NL80211_ATTR_IE]);
7583         else
7584                 ie_len = 0;
7585
7586         if (ie_len > wiphy->max_sched_scan_ie_len)
7587                 return ERR_PTR(-EINVAL);
7588
7589         if (attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
7590                 /*
7591                  * NL80211_ATTR_SCHED_SCAN_INTERVAL must not be specified since
7592                  * each scan plan already specifies its own interval
7593                  */
7594                 if (attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
7595                         return ERR_PTR(-EINVAL);
7596
7597                 nla_for_each_nested(attr,
7598                                     attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp)
7599                         n_plans++;
7600         } else {
7601                 /*
7602                  * The scan interval attribute is kept for backward
7603                  * compatibility. If no scan plans are specified and sched scan
7604                  * interval is specified, one scan plan will be set with this
7605                  * scan interval and infinite number of iterations.
7606                  */
7607                 if (!attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
7608                         return ERR_PTR(-EINVAL);
7609
7610                 n_plans = 1;
7611         }
7612
7613         if (!n_plans || n_plans > wiphy->max_sched_scan_plans)
7614                 return ERR_PTR(-EINVAL);
7615
7616         if (!wiphy_ext_feature_isset(
7617                     wiphy, NL80211_EXT_FEATURE_SCHED_SCAN_RELATIVE_RSSI) &&
7618             (attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI] ||
7619              attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]))
7620                 return ERR_PTR(-EINVAL);
7621
7622         request = kzalloc(sizeof(*request)
7623                         + sizeof(*request->ssids) * n_ssids
7624                         + sizeof(*request->match_sets) * n_match_sets
7625                         + sizeof(*request->scan_plans) * n_plans
7626                         + sizeof(*request->channels) * n_channels
7627                         + ie_len, GFP_KERNEL);
7628         if (!request)
7629                 return ERR_PTR(-ENOMEM);
7630
7631         if (n_ssids)
7632                 request->ssids = (void *)&request->channels[n_channels];
7633         request->n_ssids = n_ssids;
7634         if (ie_len) {
7635                 if (n_ssids)
7636                         request->ie = (void *)(request->ssids + n_ssids);
7637                 else
7638                         request->ie = (void *)(request->channels + n_channels);
7639         }
7640
7641         if (n_match_sets) {
7642                 if (request->ie)
7643                         request->match_sets = (void *)(request->ie + ie_len);
7644                 else if (n_ssids)
7645                         request->match_sets =
7646                                 (void *)(request->ssids + n_ssids);
7647                 else
7648                         request->match_sets =
7649                                 (void *)(request->channels + n_channels);
7650         }
7651         request->n_match_sets = n_match_sets;
7652
7653         if (n_match_sets)
7654                 request->scan_plans = (void *)(request->match_sets +
7655                                                n_match_sets);
7656         else if (request->ie)
7657                 request->scan_plans = (void *)(request->ie + ie_len);
7658         else if (n_ssids)
7659                 request->scan_plans = (void *)(request->ssids + n_ssids);
7660         else
7661                 request->scan_plans = (void *)(request->channels + n_channels);
7662
7663         request->n_scan_plans = n_plans;
7664
7665         i = 0;
7666         if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
7667                 /* user specified, bail out if channel not found */
7668                 nla_for_each_nested(attr,
7669                                     attrs[NL80211_ATTR_SCAN_FREQUENCIES],
7670                                     tmp) {
7671                         struct ieee80211_channel *chan;
7672
7673                         chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
7674
7675                         if (!chan) {
7676                                 err = -EINVAL;
7677                                 goto out_free;
7678                         }
7679
7680                         /* ignore disabled channels */
7681                         if (chan->flags & IEEE80211_CHAN_DISABLED)
7682                                 continue;
7683
7684                         request->channels[i] = chan;
7685                         i++;
7686                 }
7687         } else {
7688                 /* all channels */
7689                 for (band = 0; band < NUM_NL80211_BANDS; band++) {
7690                         int j;
7691
7692                         if (!wiphy->bands[band])
7693                                 continue;
7694                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
7695                                 struct ieee80211_channel *chan;
7696
7697                                 chan = &wiphy->bands[band]->channels[j];
7698
7699                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
7700                                         continue;
7701
7702                                 request->channels[i] = chan;
7703                                 i++;
7704                         }
7705                 }
7706         }
7707
7708         if (!i) {
7709                 err = -EINVAL;
7710                 goto out_free;
7711         }
7712
7713         request->n_channels = i;
7714
7715         i = 0;
7716         if (n_ssids) {
7717                 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
7718                                     tmp) {
7719                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
7720                                 err = -EINVAL;
7721                                 goto out_free;
7722                         }
7723                         request->ssids[i].ssid_len = nla_len(attr);
7724                         memcpy(request->ssids[i].ssid, nla_data(attr),
7725                                nla_len(attr));
7726                         i++;
7727                 }
7728         }
7729
7730         i = 0;
7731         if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
7732                 nla_for_each_nested(attr,
7733                                     attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
7734                                     tmp) {
7735                         struct nlattr *ssid, *bssid, *rssi;
7736
7737                         err = nla_parse_nested(tb,
7738                                                NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
7739                                                attr, nl80211_match_policy,
7740                                                NULL);
7741                         if (err)
7742                                 goto out_free;
7743                         ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID];
7744                         bssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID];
7745                         if (ssid || bssid) {
7746                                 if (WARN_ON(i >= n_match_sets)) {
7747                                         /* this indicates a programming error,
7748                                          * the loop above should have verified
7749                                          * things properly
7750                                          */
7751                                         err = -EINVAL;
7752                                         goto out_free;
7753                                 }
7754
7755                                 if (ssid) {
7756                                         if (nla_len(ssid) > IEEE80211_MAX_SSID_LEN) {
7757                                                 err = -EINVAL;
7758                                                 goto out_free;
7759                                         }
7760                                         memcpy(request->match_sets[i].ssid.ssid,
7761                                                nla_data(ssid), nla_len(ssid));
7762                                         request->match_sets[i].ssid.ssid_len =
7763                                                 nla_len(ssid);
7764                                 }
7765                                 if (bssid) {
7766                                         if (nla_len(bssid) != ETH_ALEN) {
7767                                                 err = -EINVAL;
7768                                                 goto out_free;
7769                                         }
7770                                         memcpy(request->match_sets[i].bssid,
7771                                                nla_data(bssid), ETH_ALEN);
7772                                 }
7773
7774                                 /* special attribute - old implementation w/a */
7775                                 request->match_sets[i].rssi_thold =
7776                                         default_match_rssi;
7777                                 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
7778                                 if (rssi)
7779                                         request->match_sets[i].rssi_thold =
7780                                                 nla_get_s32(rssi);
7781                         }
7782                         i++;
7783                 }
7784
7785                 /* there was no other matchset, so the RSSI one is alone */
7786                 if (i == 0 && n_match_sets)
7787                         request->match_sets[0].rssi_thold = default_match_rssi;
7788
7789                 request->min_rssi_thold = INT_MAX;
7790                 for (i = 0; i < n_match_sets; i++)
7791                         request->min_rssi_thold =
7792                                 min(request->match_sets[i].rssi_thold,
7793                                     request->min_rssi_thold);
7794         } else {
7795                 request->min_rssi_thold = NL80211_SCAN_RSSI_THOLD_OFF;
7796         }
7797
7798         if (ie_len) {
7799                 request->ie_len = ie_len;
7800                 memcpy((void *)request->ie,
7801                        nla_data(attrs[NL80211_ATTR_IE]),
7802                        request->ie_len);
7803         }
7804
7805         err = nl80211_check_scan_flags(wiphy, wdev, request, attrs, true);
7806         if (err)
7807                 goto out_free;
7808
7809         if (attrs[NL80211_ATTR_SCHED_SCAN_DELAY])
7810                 request->delay =
7811                         nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_DELAY]);
7812
7813         if (attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI]) {
7814                 request->relative_rssi = nla_get_s8(
7815                         attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI]);
7816                 request->relative_rssi_set = true;
7817         }
7818
7819         if (request->relative_rssi_set &&
7820             attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]) {
7821                 struct nl80211_bss_select_rssi_adjust *rssi_adjust;
7822
7823                 rssi_adjust = nla_data(
7824                         attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]);
7825                 request->rssi_adjust.band = rssi_adjust->band;
7826                 request->rssi_adjust.delta = rssi_adjust->delta;
7827                 if (!is_band_valid(wiphy, request->rssi_adjust.band)) {
7828                         err = -EINVAL;
7829                         goto out_free;
7830                 }
7831         }
7832
7833         err = nl80211_parse_sched_scan_plans(wiphy, n_plans, request, attrs);
7834         if (err)
7835                 goto out_free;
7836
7837         request->scan_start = jiffies;
7838
7839         return request;
7840
7841 out_free:
7842         kfree(request);
7843         return ERR_PTR(err);
7844 }
7845
7846 static int nl80211_start_sched_scan(struct sk_buff *skb,
7847                                     struct genl_info *info)
7848 {
7849         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7850         struct net_device *dev = info->user_ptr[1];
7851         struct wireless_dev *wdev = dev->ieee80211_ptr;
7852         struct cfg80211_sched_scan_request *sched_scan_req;
7853         bool want_multi;
7854         int err;
7855
7856         if (!rdev->wiphy.max_sched_scan_reqs || !rdev->ops->sched_scan_start)
7857                 return -EOPNOTSUPP;
7858
7859         want_multi = info->attrs[NL80211_ATTR_SCHED_SCAN_MULTI];
7860         err = cfg80211_sched_scan_req_possible(rdev, want_multi);
7861         if (err)
7862                 return err;
7863
7864         sched_scan_req = nl80211_parse_sched_scan(&rdev->wiphy, wdev,
7865                                                   info->attrs,
7866                                                   rdev->wiphy.max_match_sets);
7867
7868         err = PTR_ERR_OR_ZERO(sched_scan_req);
7869         if (err)
7870                 goto out_err;
7871
7872         /* leave request id zero for legacy request
7873          * or if driver does not support multi-scheduled scan
7874          */
7875         if (want_multi && rdev->wiphy.max_sched_scan_reqs > 1) {
7876                 while (!sched_scan_req->reqid)
7877                         sched_scan_req->reqid = cfg80211_assign_cookie(rdev);
7878         }
7879
7880         err = rdev_sched_scan_start(rdev, dev, sched_scan_req);
7881         if (err)
7882                 goto out_free;
7883
7884         sched_scan_req->dev = dev;
7885         sched_scan_req->wiphy = &rdev->wiphy;
7886
7887         if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
7888                 sched_scan_req->owner_nlportid = info->snd_portid;
7889
7890         cfg80211_add_sched_scan_req(rdev, sched_scan_req);
7891
7892         nl80211_send_sched_scan(sched_scan_req, NL80211_CMD_START_SCHED_SCAN);
7893         return 0;
7894
7895 out_free:
7896         kfree(sched_scan_req);
7897 out_err:
7898         return err;
7899 }
7900
7901 static int nl80211_stop_sched_scan(struct sk_buff *skb,
7902                                    struct genl_info *info)
7903 {
7904         struct cfg80211_sched_scan_request *req;
7905         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7906         u64 cookie;
7907
7908         if (!rdev->wiphy.max_sched_scan_reqs || !rdev->ops->sched_scan_stop)
7909                 return -EOPNOTSUPP;
7910
7911         if (info->attrs[NL80211_ATTR_COOKIE]) {
7912                 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
7913                 return __cfg80211_stop_sched_scan(rdev, cookie, false);
7914         }
7915
7916         req = list_first_or_null_rcu(&rdev->sched_scan_req_list,
7917                                      struct cfg80211_sched_scan_request,
7918                                      list);
7919         if (!req || req->reqid ||
7920             (req->owner_nlportid &&
7921              req->owner_nlportid != info->snd_portid))
7922                 return -ENOENT;
7923
7924         return cfg80211_stop_sched_scan_req(rdev, req, false);
7925 }
7926
7927 static int nl80211_start_radar_detection(struct sk_buff *skb,
7928                                          struct genl_info *info)
7929 {
7930         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7931         struct net_device *dev = info->user_ptr[1];
7932         struct wireless_dev *wdev = dev->ieee80211_ptr;
7933         struct wiphy *wiphy = wdev->wiphy;
7934         struct cfg80211_chan_def chandef;
7935         enum nl80211_dfs_regions dfs_region;
7936         unsigned int cac_time_ms;
7937         int err;
7938
7939         dfs_region = reg_get_dfs_region(wiphy);
7940         if (dfs_region == NL80211_DFS_UNSET)
7941                 return -EINVAL;
7942
7943         err = nl80211_parse_chandef(rdev, info, &chandef);
7944         if (err)
7945                 return err;
7946
7947         if (netif_carrier_ok(dev))
7948                 return -EBUSY;
7949
7950         if (wdev->cac_started)
7951                 return -EBUSY;
7952
7953         err = cfg80211_chandef_dfs_required(wiphy, &chandef, wdev->iftype);
7954         if (err < 0)
7955                 return err;
7956
7957         if (err == 0)
7958                 return -EINVAL;
7959
7960         if (!cfg80211_chandef_dfs_usable(wiphy, &chandef))
7961                 return -EINVAL;
7962
7963         /* CAC start is offloaded to HW and can't be started manually */
7964         if (wiphy_ext_feature_isset(wiphy, NL80211_EXT_FEATURE_DFS_OFFLOAD))
7965                 return -EOPNOTSUPP;
7966
7967         if (!rdev->ops->start_radar_detection)
7968                 return -EOPNOTSUPP;
7969
7970         cac_time_ms = cfg80211_chandef_dfs_cac_time(&rdev->wiphy, &chandef);
7971         if (WARN_ON(!cac_time_ms))
7972                 cac_time_ms = IEEE80211_DFS_MIN_CAC_TIME_MS;
7973
7974         err = rdev_start_radar_detection(rdev, dev, &chandef, cac_time_ms);
7975         if (!err) {
7976                 wdev->chandef = chandef;
7977                 wdev->cac_started = true;
7978                 wdev->cac_start_time = jiffies;
7979                 wdev->cac_time_ms = cac_time_ms;
7980         }
7981         return err;
7982 }
7983
7984 static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info)
7985 {
7986         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7987         struct net_device *dev = info->user_ptr[1];
7988         struct wireless_dev *wdev = dev->ieee80211_ptr;
7989         struct cfg80211_csa_settings params;
7990         /* csa_attrs is defined static to avoid waste of stack size - this
7991          * function is called under RTNL lock, so this should not be a problem.
7992          */
7993         static struct nlattr *csa_attrs[NL80211_ATTR_MAX+1];
7994         int err;
7995         bool need_new_beacon = false;
7996         bool need_handle_dfs_flag = true;
7997         int len, i;
7998         u32 cs_count;
7999
8000         if (!rdev->ops->channel_switch ||
8001             !(rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH))
8002                 return -EOPNOTSUPP;
8003
8004         switch (dev->ieee80211_ptr->iftype) {
8005         case NL80211_IFTYPE_AP:
8006         case NL80211_IFTYPE_P2P_GO:
8007                 need_new_beacon = true;
8008                 /* For all modes except AP the handle_dfs flag needs to be
8009                  * supplied to tell the kernel that userspace will handle radar
8010                  * events when they happen. Otherwise a switch to a channel
8011                  * requiring DFS will be rejected.
8012                  */
8013                 need_handle_dfs_flag = false;
8014
8015                 /* useless if AP is not running */
8016                 if (!wdev->beacon_interval)
8017                         return -ENOTCONN;
8018                 break;
8019         case NL80211_IFTYPE_ADHOC:
8020                 if (!wdev->ssid_len)
8021                         return -ENOTCONN;
8022                 break;
8023         case NL80211_IFTYPE_MESH_POINT:
8024                 if (!wdev->mesh_id_len)
8025                         return -ENOTCONN;
8026                 break;
8027         default:
8028                 return -EOPNOTSUPP;
8029         }
8030
8031         memset(&params, 0, sizeof(params));
8032
8033         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
8034             !info->attrs[NL80211_ATTR_CH_SWITCH_COUNT])
8035                 return -EINVAL;
8036
8037         /* only important for AP, IBSS and mesh create IEs internally */
8038         if (need_new_beacon && !info->attrs[NL80211_ATTR_CSA_IES])
8039                 return -EINVAL;
8040
8041         /* Even though the attribute is u32, the specification says
8042          * u8, so let's make sure we don't overflow.
8043          */
8044         cs_count = nla_get_u32(info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]);
8045         if (cs_count > 255)
8046                 return -EINVAL;
8047
8048         params.count = cs_count;
8049
8050         if (!need_new_beacon)
8051                 goto skip_beacons;
8052
8053         err = nl80211_parse_beacon(rdev, info->attrs, &params.beacon_after);
8054         if (err)
8055                 return err;
8056
8057         err = nla_parse_nested(csa_attrs, NL80211_ATTR_MAX,
8058                                info->attrs[NL80211_ATTR_CSA_IES],
8059                                nl80211_policy, info->extack);
8060         if (err)
8061                 return err;
8062
8063         err = nl80211_parse_beacon(rdev, csa_attrs, &params.beacon_csa);
8064         if (err)
8065                 return err;
8066
8067         if (!csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON])
8068                 return -EINVAL;
8069
8070         len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
8071         if (!len || (len % sizeof(u16)))
8072                 return -EINVAL;
8073
8074         params.n_counter_offsets_beacon = len / sizeof(u16);
8075         if (rdev->wiphy.max_num_csa_counters &&
8076             (params.n_counter_offsets_beacon >
8077              rdev->wiphy.max_num_csa_counters))
8078                 return -EINVAL;
8079
8080         params.counter_offsets_beacon =
8081                 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
8082
8083         /* sanity checks - counters should fit and be the same */
8084         for (i = 0; i < params.n_counter_offsets_beacon; i++) {
8085                 u16 offset = params.counter_offsets_beacon[i];
8086
8087                 if (offset >= params.beacon_csa.tail_len)
8088                         return -EINVAL;
8089
8090                 if (params.beacon_csa.tail[offset] != params.count)
8091                         return -EINVAL;
8092         }
8093
8094         if (csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]) {
8095                 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
8096                 if (!len || (len % sizeof(u16)))
8097                         return -EINVAL;
8098
8099                 params.n_counter_offsets_presp = len / sizeof(u16);
8100                 if (rdev->wiphy.max_num_csa_counters &&
8101                     (params.n_counter_offsets_presp >
8102                      rdev->wiphy.max_num_csa_counters))
8103                         return -EINVAL;
8104
8105                 params.counter_offsets_presp =
8106                         nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
8107
8108                 /* sanity checks - counters should fit and be the same */
8109                 for (i = 0; i < params.n_counter_offsets_presp; i++) {
8110                         u16 offset = params.counter_offsets_presp[i];
8111
8112                         if (offset >= params.beacon_csa.probe_resp_len)
8113                                 return -EINVAL;
8114
8115                         if (params.beacon_csa.probe_resp[offset] !=
8116                             params.count)
8117                                 return -EINVAL;
8118                 }
8119         }
8120
8121 skip_beacons:
8122         err = nl80211_parse_chandef(rdev, info, &params.chandef);
8123         if (err)
8124                 return err;
8125
8126         if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params.chandef,
8127                                            wdev->iftype))
8128                 return -EINVAL;
8129
8130         err = cfg80211_chandef_dfs_required(wdev->wiphy,
8131                                             &params.chandef,
8132                                             wdev->iftype);
8133         if (err < 0)
8134                 return err;
8135
8136         if (err > 0) {
8137                 params.radar_required = true;
8138                 if (need_handle_dfs_flag &&
8139                     !nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS])) {
8140                         return -EINVAL;
8141                 }
8142         }
8143
8144         if (info->attrs[NL80211_ATTR_CH_SWITCH_BLOCK_TX])
8145                 params.block_tx = true;
8146
8147         wdev_lock(wdev);
8148         err = rdev_channel_switch(rdev, dev, &params);
8149         wdev_unlock(wdev);
8150
8151         return err;
8152 }
8153
8154 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
8155                             u32 seq, int flags,
8156                             struct cfg80211_registered_device *rdev,
8157                             struct wireless_dev *wdev,
8158                             struct cfg80211_internal_bss *intbss)
8159 {
8160         struct cfg80211_bss *res = &intbss->pub;
8161         const struct cfg80211_bss_ies *ies;
8162         void *hdr;
8163         struct nlattr *bss;
8164
8165         ASSERT_WDEV_LOCK(wdev);
8166
8167         hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
8168                              NL80211_CMD_NEW_SCAN_RESULTS);
8169         if (!hdr)
8170                 return -1;
8171
8172         genl_dump_check_consistent(cb, hdr);
8173
8174         if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation))
8175                 goto nla_put_failure;
8176         if (wdev->netdev &&
8177             nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex))
8178                 goto nla_put_failure;
8179         if (nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
8180                               NL80211_ATTR_PAD))
8181                 goto nla_put_failure;
8182
8183         bss = nla_nest_start(msg, NL80211_ATTR_BSS);
8184         if (!bss)
8185                 goto nla_put_failure;
8186         if ((!is_zero_ether_addr(res->bssid) &&
8187              nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid)))
8188                 goto nla_put_failure;
8189
8190         rcu_read_lock();
8191         /* indicate whether we have probe response data or not */
8192         if (rcu_access_pointer(res->proberesp_ies) &&
8193             nla_put_flag(msg, NL80211_BSS_PRESP_DATA))
8194                 goto fail_unlock_rcu;
8195
8196         /* this pointer prefers to be pointed to probe response data
8197          * but is always valid
8198          */
8199         ies = rcu_dereference(res->ies);
8200         if (ies) {
8201                 if (nla_put_u64_64bit(msg, NL80211_BSS_TSF, ies->tsf,
8202                                       NL80211_BSS_PAD))
8203                         goto fail_unlock_rcu;
8204                 if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS,
8205                                         ies->len, ies->data))
8206                         goto fail_unlock_rcu;
8207         }
8208
8209         /* and this pointer is always (unless driver didn't know) beacon data */
8210         ies = rcu_dereference(res->beacon_ies);
8211         if (ies && ies->from_beacon) {
8212                 if (nla_put_u64_64bit(msg, NL80211_BSS_BEACON_TSF, ies->tsf,
8213                                       NL80211_BSS_PAD))
8214                         goto fail_unlock_rcu;
8215                 if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES,
8216                                         ies->len, ies->data))
8217                         goto fail_unlock_rcu;
8218         }
8219         rcu_read_unlock();
8220
8221         if (res->beacon_interval &&
8222             nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval))
8223                 goto nla_put_failure;
8224         if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) ||
8225             nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) ||
8226             nla_put_u32(msg, NL80211_BSS_CHAN_WIDTH, res->scan_width) ||
8227             nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO,
8228                         jiffies_to_msecs(jiffies - intbss->ts)))
8229                 goto nla_put_failure;
8230
8231         if (intbss->parent_tsf &&
8232             (nla_put_u64_64bit(msg, NL80211_BSS_PARENT_TSF,
8233                                intbss->parent_tsf, NL80211_BSS_PAD) ||
8234              nla_put(msg, NL80211_BSS_PARENT_BSSID, ETH_ALEN,
8235                      intbss->parent_bssid)))
8236                 goto nla_put_failure;
8237
8238         if (intbss->ts_boottime &&
8239             nla_put_u64_64bit(msg, NL80211_BSS_LAST_SEEN_BOOTTIME,
8240                               intbss->ts_boottime, NL80211_BSS_PAD))
8241                 goto nla_put_failure;
8242
8243         if (!nl80211_put_signal(msg, intbss->pub.chains,
8244                                 intbss->pub.chain_signal,
8245                                 NL80211_BSS_CHAIN_SIGNAL))
8246                 goto nla_put_failure;
8247
8248         switch (rdev->wiphy.signal_type) {
8249         case CFG80211_SIGNAL_TYPE_MBM:
8250                 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal))
8251                         goto nla_put_failure;
8252                 break;
8253         case CFG80211_SIGNAL_TYPE_UNSPEC:
8254                 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal))
8255                         goto nla_put_failure;
8256                 break;
8257         default:
8258                 break;
8259         }
8260
8261         switch (wdev->iftype) {
8262         case NL80211_IFTYPE_P2P_CLIENT:
8263         case NL80211_IFTYPE_STATION:
8264                 if (intbss == wdev->current_bss &&
8265                     nla_put_u32(msg, NL80211_BSS_STATUS,
8266                                 NL80211_BSS_STATUS_ASSOCIATED))
8267                         goto nla_put_failure;
8268                 break;
8269         case NL80211_IFTYPE_ADHOC:
8270                 if (intbss == wdev->current_bss &&
8271                     nla_put_u32(msg, NL80211_BSS_STATUS,
8272                                 NL80211_BSS_STATUS_IBSS_JOINED))
8273                         goto nla_put_failure;
8274                 break;
8275         default:
8276                 break;
8277         }
8278
8279         nla_nest_end(msg, bss);
8280
8281         genlmsg_end(msg, hdr);
8282         return 0;
8283
8284  fail_unlock_rcu:
8285         rcu_read_unlock();
8286  nla_put_failure:
8287         genlmsg_cancel(msg, hdr);
8288         return -EMSGSIZE;
8289 }
8290
8291 static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb)
8292 {
8293         struct cfg80211_registered_device *rdev;
8294         struct cfg80211_internal_bss *scan;
8295         struct wireless_dev *wdev;
8296         int start = cb->args[2], idx = 0;
8297         int err;
8298
8299         rtnl_lock();
8300         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
8301         if (err) {
8302                 rtnl_unlock();
8303                 return err;
8304         }
8305
8306         wdev_lock(wdev);
8307         spin_lock_bh(&rdev->bss_lock);
8308
8309         /*
8310          * dump_scan will be called multiple times to break up the scan results
8311          * into multiple messages.  It is unlikely that any more bss-es will be
8312          * expired after the first call, so only call only call this on the
8313          * first dump_scan invocation.
8314          */
8315         if (start == 0)
8316                 cfg80211_bss_expire(rdev);
8317
8318         cb->seq = rdev->bss_generation;
8319
8320         list_for_each_entry(scan, &rdev->bss_list, list) {
8321                 if (++idx <= start)
8322                         continue;
8323                 if (nl80211_send_bss(skb, cb,
8324                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
8325                                 rdev, wdev, scan) < 0) {
8326                         idx--;
8327                         break;
8328                 }
8329         }
8330
8331         spin_unlock_bh(&rdev->bss_lock);
8332         wdev_unlock(wdev);
8333
8334         cb->args[2] = idx;
8335         rtnl_unlock();
8336
8337         return skb->len;
8338 }
8339
8340 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq,
8341                                int flags, struct net_device *dev,
8342                                bool allow_radio_stats,
8343                                struct survey_info *survey)
8344 {
8345         void *hdr;
8346         struct nlattr *infoattr;
8347
8348         /* skip radio stats if userspace didn't request them */
8349         if (!survey->channel && !allow_radio_stats)
8350                 return 0;
8351
8352         hdr = nl80211hdr_put(msg, portid, seq, flags,
8353                              NL80211_CMD_NEW_SURVEY_RESULTS);
8354         if (!hdr)
8355                 return -ENOMEM;
8356
8357         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
8358                 goto nla_put_failure;
8359
8360         infoattr = nla_nest_start(msg, NL80211_ATTR_SURVEY_INFO);
8361         if (!infoattr)
8362                 goto nla_put_failure;
8363
8364         if (survey->channel &&
8365             nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY,
8366                         survey->channel->center_freq))
8367                 goto nla_put_failure;
8368
8369         if ((survey->filled & SURVEY_INFO_NOISE_DBM) &&
8370             nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise))
8371                 goto nla_put_failure;
8372         if ((survey->filled & SURVEY_INFO_IN_USE) &&
8373             nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE))
8374                 goto nla_put_failure;
8375         if ((survey->filled & SURVEY_INFO_TIME) &&
8376             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME,
8377                         survey->time, NL80211_SURVEY_INFO_PAD))
8378                 goto nla_put_failure;
8379         if ((survey->filled & SURVEY_INFO_TIME_BUSY) &&
8380             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_BUSY,
8381                               survey->time_busy, NL80211_SURVEY_INFO_PAD))
8382                 goto nla_put_failure;
8383         if ((survey->filled & SURVEY_INFO_TIME_EXT_BUSY) &&
8384             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_EXT_BUSY,
8385                               survey->time_ext_busy, NL80211_SURVEY_INFO_PAD))
8386                 goto nla_put_failure;
8387         if ((survey->filled & SURVEY_INFO_TIME_RX) &&
8388             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_RX,
8389                               survey->time_rx, NL80211_SURVEY_INFO_PAD))
8390                 goto nla_put_failure;
8391         if ((survey->filled & SURVEY_INFO_TIME_TX) &&
8392             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_TX,
8393                               survey->time_tx, NL80211_SURVEY_INFO_PAD))
8394                 goto nla_put_failure;
8395         if ((survey->filled & SURVEY_INFO_TIME_SCAN) &&
8396             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_SCAN,
8397                               survey->time_scan, NL80211_SURVEY_INFO_PAD))
8398                 goto nla_put_failure;
8399
8400         nla_nest_end(msg, infoattr);
8401
8402         genlmsg_end(msg, hdr);
8403         return 0;
8404
8405  nla_put_failure:
8406         genlmsg_cancel(msg, hdr);
8407         return -EMSGSIZE;
8408 }
8409
8410 static int nl80211_dump_survey(struct sk_buff *skb, struct netlink_callback *cb)
8411 {
8412         struct nlattr **attrbuf = genl_family_attrbuf(&nl80211_fam);
8413         struct survey_info survey;
8414         struct cfg80211_registered_device *rdev;
8415         struct wireless_dev *wdev;
8416         int survey_idx = cb->args[2];
8417         int res;
8418         bool radio_stats;
8419
8420         rtnl_lock();
8421         res = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
8422         if (res)
8423                 goto out_err;
8424
8425         /* prepare_wdev_dump parsed the attributes */
8426         radio_stats = attrbuf[NL80211_ATTR_SURVEY_RADIO_STATS];
8427
8428         if (!wdev->netdev) {
8429                 res = -EINVAL;
8430                 goto out_err;
8431         }
8432
8433         if (!rdev->ops->dump_survey) {
8434                 res = -EOPNOTSUPP;
8435                 goto out_err;
8436         }
8437
8438         while (1) {
8439                 res = rdev_dump_survey(rdev, wdev->netdev, survey_idx, &survey);
8440                 if (res == -ENOENT)
8441                         break;
8442                 if (res)
8443                         goto out_err;
8444
8445                 /* don't send disabled channels, but do send non-channel data */
8446                 if (survey.channel &&
8447                     survey.channel->flags & IEEE80211_CHAN_DISABLED) {
8448                         survey_idx++;
8449                         continue;
8450                 }
8451
8452                 if (nl80211_send_survey(skb,
8453                                 NETLINK_CB(cb->skb).portid,
8454                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
8455                                 wdev->netdev, radio_stats, &survey) < 0)
8456                         goto out;
8457                 survey_idx++;
8458         }
8459
8460  out:
8461         cb->args[2] = survey_idx;
8462         res = skb->len;
8463  out_err:
8464         rtnl_unlock();
8465         return res;
8466 }
8467
8468 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
8469 {
8470         return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
8471                                   NL80211_WPA_VERSION_2));
8472 }
8473
8474 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
8475 {
8476         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8477         struct net_device *dev = info->user_ptr[1];
8478         struct ieee80211_channel *chan;
8479         const u8 *bssid, *ssid, *ie = NULL, *auth_data = NULL;
8480         int err, ssid_len, ie_len = 0, auth_data_len = 0;
8481         enum nl80211_auth_type auth_type;
8482         struct key_parse key;
8483         bool local_state_change;
8484
8485         if (!info->attrs[NL80211_ATTR_MAC])
8486                 return -EINVAL;
8487
8488         if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
8489                 return -EINVAL;
8490
8491         if (!info->attrs[NL80211_ATTR_SSID])
8492                 return -EINVAL;
8493
8494         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
8495                 return -EINVAL;
8496
8497         err = nl80211_parse_key(info, &key);
8498         if (err)
8499                 return err;
8500
8501         if (key.idx >= 0) {
8502                 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
8503                         return -EINVAL;
8504                 if (!key.p.key || !key.p.key_len)
8505                         return -EINVAL;
8506                 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
8507                      key.p.key_len != WLAN_KEY_LEN_WEP40) &&
8508                     (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
8509                      key.p.key_len != WLAN_KEY_LEN_WEP104))
8510                         return -EINVAL;
8511                 if (key.idx > 3)
8512                         return -EINVAL;
8513         } else {
8514                 key.p.key_len = 0;
8515                 key.p.key = NULL;
8516         }
8517
8518         if (key.idx >= 0) {
8519                 int i;
8520                 bool ok = false;
8521
8522                 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
8523                         if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
8524                                 ok = true;
8525                                 break;
8526                         }
8527                 }
8528                 if (!ok)
8529                         return -EINVAL;
8530         }
8531
8532         if (!rdev->ops->auth)
8533                 return -EOPNOTSUPP;
8534
8535         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8536             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8537                 return -EOPNOTSUPP;
8538
8539         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8540         chan = nl80211_get_valid_chan(&rdev->wiphy,
8541                                       info->attrs[NL80211_ATTR_WIPHY_FREQ]);
8542         if (!chan)
8543                 return -EINVAL;
8544
8545         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
8546         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
8547
8548         if (info->attrs[NL80211_ATTR_IE]) {
8549                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8550                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8551         }
8552
8553         auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
8554         if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE))
8555                 return -EINVAL;
8556
8557         if ((auth_type == NL80211_AUTHTYPE_SAE ||
8558              auth_type == NL80211_AUTHTYPE_FILS_SK ||
8559              auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
8560              auth_type == NL80211_AUTHTYPE_FILS_PK) &&
8561             !info->attrs[NL80211_ATTR_AUTH_DATA])
8562                 return -EINVAL;
8563
8564         if (info->attrs[NL80211_ATTR_AUTH_DATA]) {
8565                 if (auth_type != NL80211_AUTHTYPE_SAE &&
8566                     auth_type != NL80211_AUTHTYPE_FILS_SK &&
8567                     auth_type != NL80211_AUTHTYPE_FILS_SK_PFS &&
8568                     auth_type != NL80211_AUTHTYPE_FILS_PK)
8569                         return -EINVAL;
8570                 auth_data = nla_data(info->attrs[NL80211_ATTR_AUTH_DATA]);
8571                 auth_data_len = nla_len(info->attrs[NL80211_ATTR_AUTH_DATA]);
8572                 /* need to include at least Auth Transaction and Status Code */
8573                 if (auth_data_len < 4)
8574                         return -EINVAL;
8575         }
8576
8577         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
8578
8579         /*
8580          * Since we no longer track auth state, ignore
8581          * requests to only change local state.
8582          */
8583         if (local_state_change)
8584                 return 0;
8585
8586         wdev_lock(dev->ieee80211_ptr);
8587         err = cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
8588                                  ssid, ssid_len, ie, ie_len,
8589                                  key.p.key, key.p.key_len, key.idx,
8590                                  auth_data, auth_data_len);
8591         wdev_unlock(dev->ieee80211_ptr);
8592         return err;
8593 }
8594
8595 static int validate_pae_over_nl80211(struct cfg80211_registered_device *rdev,
8596                                      struct genl_info *info)
8597 {
8598         if (!info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
8599                 GENL_SET_ERR_MSG(info, "SOCKET_OWNER not set");
8600                 return -EINVAL;
8601         }
8602
8603         if (!rdev->ops->tx_control_port ||
8604             !wiphy_ext_feature_isset(&rdev->wiphy,
8605                                      NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211))
8606                 return -EOPNOTSUPP;
8607
8608         return 0;
8609 }
8610
8611 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
8612                                    struct genl_info *info,
8613                                    struct cfg80211_crypto_settings *settings,
8614                                    int cipher_limit)
8615 {
8616         memset(settings, 0, sizeof(*settings));
8617
8618         settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
8619
8620         if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
8621                 u16 proto;
8622
8623                 proto = nla_get_u16(
8624                         info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
8625                 settings->control_port_ethertype = cpu_to_be16(proto);
8626                 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
8627                     proto != ETH_P_PAE)
8628                         return -EINVAL;
8629                 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
8630                         settings->control_port_no_encrypt = true;
8631         } else
8632                 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
8633
8634         if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
8635                 int r = validate_pae_over_nl80211(rdev, info);
8636
8637                 if (r < 0)
8638                         return r;
8639
8640                 settings->control_port_over_nl80211 = true;
8641         }
8642
8643         if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
8644                 void *data;
8645                 int len, i;
8646
8647                 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
8648                 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
8649                 settings->n_ciphers_pairwise = len / sizeof(u32);
8650
8651                 if (len % sizeof(u32))
8652                         return -EINVAL;
8653
8654                 if (settings->n_ciphers_pairwise > cipher_limit)
8655                         return -EINVAL;
8656
8657                 memcpy(settings->ciphers_pairwise, data, len);
8658
8659                 for (i = 0; i < settings->n_ciphers_pairwise; i++)
8660                         if (!cfg80211_supported_cipher_suite(
8661                                         &rdev->wiphy,
8662                                         settings->ciphers_pairwise[i]))
8663                                 return -EINVAL;
8664         }
8665
8666         if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
8667                 settings->cipher_group =
8668                         nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
8669                 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
8670                                                      settings->cipher_group))
8671                         return -EINVAL;
8672         }
8673
8674         if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
8675                 settings->wpa_versions =
8676                         nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
8677                 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
8678                         return -EINVAL;
8679         }
8680
8681         if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
8682                 void *data;
8683                 int len;
8684
8685                 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
8686                 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
8687                 settings->n_akm_suites = len / sizeof(u32);
8688
8689                 if (len % sizeof(u32))
8690                         return -EINVAL;
8691
8692                 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES)
8693                         return -EINVAL;
8694
8695                 memcpy(settings->akm_suites, data, len);
8696         }
8697
8698         if (info->attrs[NL80211_ATTR_PMK]) {
8699                 if (nla_len(info->attrs[NL80211_ATTR_PMK]) != WLAN_PMK_LEN)
8700                         return -EINVAL;
8701                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
8702                                              NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_PSK))
8703                         return -EINVAL;
8704                 settings->psk = nla_data(info->attrs[NL80211_ATTR_PMK]);
8705         }
8706
8707         return 0;
8708 }
8709
8710 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
8711 {
8712         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8713         struct net_device *dev = info->user_ptr[1];
8714         struct ieee80211_channel *chan;
8715         struct cfg80211_assoc_request req = {};
8716         const u8 *bssid, *ssid;
8717         int err, ssid_len = 0;
8718
8719         if (dev->ieee80211_ptr->conn_owner_nlportid &&
8720             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
8721                 return -EPERM;
8722
8723         if (!info->attrs[NL80211_ATTR_MAC] ||
8724             !info->attrs[NL80211_ATTR_SSID] ||
8725             !info->attrs[NL80211_ATTR_WIPHY_FREQ])
8726                 return -EINVAL;
8727
8728         if (!rdev->ops->assoc)
8729                 return -EOPNOTSUPP;
8730
8731         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8732             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8733                 return -EOPNOTSUPP;
8734
8735         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8736
8737         chan = nl80211_get_valid_chan(&rdev->wiphy,
8738                                       info->attrs[NL80211_ATTR_WIPHY_FREQ]);
8739         if (!chan)
8740                 return -EINVAL;
8741
8742         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
8743         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
8744
8745         if (info->attrs[NL80211_ATTR_IE]) {
8746                 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8747                 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8748         }
8749
8750         if (info->attrs[NL80211_ATTR_USE_MFP]) {
8751                 enum nl80211_mfp mfp =
8752                         nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
8753                 if (mfp == NL80211_MFP_REQUIRED)
8754                         req.use_mfp = true;
8755                 else if (mfp != NL80211_MFP_NO)
8756                         return -EINVAL;
8757         }
8758
8759         if (info->attrs[NL80211_ATTR_PREV_BSSID])
8760                 req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
8761
8762         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
8763                 req.flags |= ASSOC_REQ_DISABLE_HT;
8764
8765         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
8766                 memcpy(&req.ht_capa_mask,
8767                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
8768                        sizeof(req.ht_capa_mask));
8769
8770         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
8771                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
8772                         return -EINVAL;
8773                 memcpy(&req.ht_capa,
8774                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
8775                        sizeof(req.ht_capa));
8776         }
8777
8778         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
8779                 req.flags |= ASSOC_REQ_DISABLE_VHT;
8780
8781         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
8782                 memcpy(&req.vht_capa_mask,
8783                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
8784                        sizeof(req.vht_capa_mask));
8785
8786         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
8787                 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
8788                         return -EINVAL;
8789                 memcpy(&req.vht_capa,
8790                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
8791                        sizeof(req.vht_capa));
8792         }
8793
8794         if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
8795                 if (!((rdev->wiphy.features &
8796                         NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
8797                        (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
8798                     !wiphy_ext_feature_isset(&rdev->wiphy,
8799                                              NL80211_EXT_FEATURE_RRM))
8800                         return -EINVAL;
8801                 req.flags |= ASSOC_REQ_USE_RRM;
8802         }
8803
8804         if (info->attrs[NL80211_ATTR_FILS_KEK]) {
8805                 req.fils_kek = nla_data(info->attrs[NL80211_ATTR_FILS_KEK]);
8806                 req.fils_kek_len = nla_len(info->attrs[NL80211_ATTR_FILS_KEK]);
8807                 if (!info->attrs[NL80211_ATTR_FILS_NONCES])
8808                         return -EINVAL;
8809                 req.fils_nonces =
8810                         nla_data(info->attrs[NL80211_ATTR_FILS_NONCES]);
8811         }
8812
8813         err = nl80211_crypto_settings(rdev, info, &req.crypto, 1);
8814         if (!err) {
8815                 wdev_lock(dev->ieee80211_ptr);
8816
8817                 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid,
8818                                           ssid, ssid_len, &req);
8819
8820                 if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
8821                         dev->ieee80211_ptr->conn_owner_nlportid =
8822                                 info->snd_portid;
8823                         memcpy(dev->ieee80211_ptr->disconnect_bssid,
8824                                bssid, ETH_ALEN);
8825                 }
8826
8827                 wdev_unlock(dev->ieee80211_ptr);
8828         }
8829
8830         return err;
8831 }
8832
8833 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
8834 {
8835         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8836         struct net_device *dev = info->user_ptr[1];
8837         const u8 *ie = NULL, *bssid;
8838         int ie_len = 0, err;
8839         u16 reason_code;
8840         bool local_state_change;
8841
8842         if (dev->ieee80211_ptr->conn_owner_nlportid &&
8843             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
8844                 return -EPERM;
8845
8846         if (!info->attrs[NL80211_ATTR_MAC])
8847                 return -EINVAL;
8848
8849         if (!info->attrs[NL80211_ATTR_REASON_CODE])
8850                 return -EINVAL;
8851
8852         if (!rdev->ops->deauth)
8853                 return -EOPNOTSUPP;
8854
8855         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8856             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8857                 return -EOPNOTSUPP;
8858
8859         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8860
8861         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
8862         if (reason_code == 0) {
8863                 /* Reason Code 0 is reserved */
8864                 return -EINVAL;
8865         }
8866
8867         if (info->attrs[NL80211_ATTR_IE]) {
8868                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8869                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8870         }
8871
8872         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
8873
8874         wdev_lock(dev->ieee80211_ptr);
8875         err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
8876                                    local_state_change);
8877         wdev_unlock(dev->ieee80211_ptr);
8878         return err;
8879 }
8880
8881 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
8882 {
8883         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8884         struct net_device *dev = info->user_ptr[1];
8885         const u8 *ie = NULL, *bssid;
8886         int ie_len = 0, err;
8887         u16 reason_code;
8888         bool local_state_change;
8889
8890         if (dev->ieee80211_ptr->conn_owner_nlportid &&
8891             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
8892                 return -EPERM;
8893
8894         if (!info->attrs[NL80211_ATTR_MAC])
8895                 return -EINVAL;
8896
8897         if (!info->attrs[NL80211_ATTR_REASON_CODE])
8898                 return -EINVAL;
8899
8900         if (!rdev->ops->disassoc)
8901                 return -EOPNOTSUPP;
8902
8903         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8904             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8905                 return -EOPNOTSUPP;
8906
8907         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8908
8909         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
8910         if (reason_code == 0) {
8911                 /* Reason Code 0 is reserved */
8912                 return -EINVAL;
8913         }
8914
8915         if (info->attrs[NL80211_ATTR_IE]) {
8916                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8917                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8918         }
8919
8920         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
8921
8922         wdev_lock(dev->ieee80211_ptr);
8923         err = cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
8924                                      local_state_change);
8925         wdev_unlock(dev->ieee80211_ptr);
8926         return err;
8927 }
8928
8929 static bool
8930 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
8931                          int mcast_rate[NUM_NL80211_BANDS],
8932                          int rateval)
8933 {
8934         struct wiphy *wiphy = &rdev->wiphy;
8935         bool found = false;
8936         int band, i;
8937
8938         for (band = 0; band < NUM_NL80211_BANDS; band++) {
8939                 struct ieee80211_supported_band *sband;
8940
8941                 sband = wiphy->bands[band];
8942                 if (!sband)
8943                         continue;
8944
8945                 for (i = 0; i < sband->n_bitrates; i++) {
8946                         if (sband->bitrates[i].bitrate == rateval) {
8947                                 mcast_rate[band] = i + 1;
8948                                 found = true;
8949                                 break;
8950                         }
8951                 }
8952         }
8953
8954         return found;
8955 }
8956
8957 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
8958 {
8959         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8960         struct net_device *dev = info->user_ptr[1];
8961         struct cfg80211_ibss_params ibss;
8962         struct wiphy *wiphy;
8963         struct cfg80211_cached_keys *connkeys = NULL;
8964         int err;
8965
8966         memset(&ibss, 0, sizeof(ibss));
8967
8968         if (!info->attrs[NL80211_ATTR_SSID] ||
8969             !nla_len(info->attrs[NL80211_ATTR_SSID]))
8970                 return -EINVAL;
8971
8972         ibss.beacon_interval = 100;
8973
8974         if (info->attrs[NL80211_ATTR_BEACON_INTERVAL])
8975                 ibss.beacon_interval =
8976                         nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
8977
8978         err = cfg80211_validate_beacon_int(rdev, NL80211_IFTYPE_ADHOC,
8979                                            ibss.beacon_interval);
8980         if (err)
8981                 return err;
8982
8983         if (!rdev->ops->join_ibss)
8984                 return -EOPNOTSUPP;
8985
8986         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
8987                 return -EOPNOTSUPP;
8988
8989         wiphy = &rdev->wiphy;
8990
8991         if (info->attrs[NL80211_ATTR_MAC]) {
8992                 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8993
8994                 if (!is_valid_ether_addr(ibss.bssid))
8995                         return -EINVAL;
8996         }
8997         ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
8998         ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
8999
9000         if (info->attrs[NL80211_ATTR_IE]) {
9001                 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9002                 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9003         }
9004
9005         err = nl80211_parse_chandef(rdev, info, &ibss.chandef);
9006         if (err)
9007                 return err;
9008
9009         if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef,
9010                                      NL80211_IFTYPE_ADHOC))
9011                 return -EINVAL;
9012
9013         switch (ibss.chandef.width) {
9014         case NL80211_CHAN_WIDTH_5:
9015         case NL80211_CHAN_WIDTH_10:
9016         case NL80211_CHAN_WIDTH_20_NOHT:
9017                 break;
9018         case NL80211_CHAN_WIDTH_20:
9019         case NL80211_CHAN_WIDTH_40:
9020                 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
9021                         return -EINVAL;
9022                 break;
9023         case NL80211_CHAN_WIDTH_80:
9024         case NL80211_CHAN_WIDTH_80P80:
9025         case NL80211_CHAN_WIDTH_160:
9026                 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
9027                         return -EINVAL;
9028                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
9029                                              NL80211_EXT_FEATURE_VHT_IBSS))
9030                         return -EINVAL;
9031                 break;
9032         default:
9033                 return -EINVAL;
9034         }
9035
9036         ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
9037         ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
9038
9039         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
9040                 u8 *rates =
9041                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
9042                 int n_rates =
9043                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
9044                 struct ieee80211_supported_band *sband =
9045                         wiphy->bands[ibss.chandef.chan->band];
9046
9047                 err = ieee80211_get_ratemask(sband, rates, n_rates,
9048                                              &ibss.basic_rates);
9049                 if (err)
9050                         return err;
9051         }
9052
9053         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
9054                 memcpy(&ibss.ht_capa_mask,
9055                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
9056                        sizeof(ibss.ht_capa_mask));
9057
9058         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
9059                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
9060                         return -EINVAL;
9061                 memcpy(&ibss.ht_capa,
9062                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
9063                        sizeof(ibss.ht_capa));
9064         }
9065
9066         if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
9067             !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
9068                         nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
9069                 return -EINVAL;
9070
9071         if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
9072                 bool no_ht = false;
9073
9074                 connkeys = nl80211_parse_connkeys(rdev, info, &no_ht);
9075                 if (IS_ERR(connkeys))
9076                         return PTR_ERR(connkeys);
9077
9078                 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) &&
9079                     no_ht) {
9080                         kzfree(connkeys);
9081                         return -EINVAL;
9082                 }
9083         }
9084
9085         ibss.control_port =
9086                 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]);
9087
9088         if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
9089                 int r = validate_pae_over_nl80211(rdev, info);
9090
9091                 if (r < 0)
9092                         return r;
9093
9094                 ibss.control_port_over_nl80211 = true;
9095         }
9096
9097         ibss.userspace_handles_dfs =
9098                 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
9099
9100         wdev_lock(dev->ieee80211_ptr);
9101         err = __cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
9102         if (err)
9103                 kzfree(connkeys);
9104         else if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
9105                 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
9106         wdev_unlock(dev->ieee80211_ptr);
9107
9108         return err;
9109 }
9110
9111 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
9112 {
9113         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9114         struct net_device *dev = info->user_ptr[1];
9115
9116         if (!rdev->ops->leave_ibss)
9117                 return -EOPNOTSUPP;
9118
9119         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
9120                 return -EOPNOTSUPP;
9121
9122         return cfg80211_leave_ibss(rdev, dev, false);
9123 }
9124
9125 static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info)
9126 {
9127         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9128         struct net_device *dev = info->user_ptr[1];
9129         int mcast_rate[NUM_NL80211_BANDS];
9130         u32 nla_rate;
9131         int err;
9132
9133         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
9134             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
9135             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_OCB)
9136                 return -EOPNOTSUPP;
9137
9138         if (!rdev->ops->set_mcast_rate)
9139                 return -EOPNOTSUPP;
9140
9141         memset(mcast_rate, 0, sizeof(mcast_rate));
9142
9143         if (!info->attrs[NL80211_ATTR_MCAST_RATE])
9144                 return -EINVAL;
9145
9146         nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]);
9147         if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate))
9148                 return -EINVAL;
9149
9150         err = rdev_set_mcast_rate(rdev, dev, mcast_rate);
9151
9152         return err;
9153 }
9154
9155 static struct sk_buff *
9156 __cfg80211_alloc_vendor_skb(struct cfg80211_registered_device *rdev,
9157                             struct wireless_dev *wdev, int approxlen,
9158                             u32 portid, u32 seq, enum nl80211_commands cmd,
9159                             enum nl80211_attrs attr,
9160                             const struct nl80211_vendor_cmd_info *info,
9161                             gfp_t gfp)
9162 {
9163         struct sk_buff *skb;
9164         void *hdr;
9165         struct nlattr *data;
9166
9167         skb = nlmsg_new(approxlen + 100, gfp);
9168         if (!skb)
9169                 return NULL;
9170
9171         hdr = nl80211hdr_put(skb, portid, seq, 0, cmd);
9172         if (!hdr) {
9173                 kfree_skb(skb);
9174                 return NULL;
9175         }
9176
9177         if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
9178                 goto nla_put_failure;
9179
9180         if (info) {
9181                 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_ID,
9182                                 info->vendor_id))
9183                         goto nla_put_failure;
9184                 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_SUBCMD,
9185                                 info->subcmd))
9186                         goto nla_put_failure;
9187         }
9188
9189         if (wdev) {
9190                 if (nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
9191                                       wdev_id(wdev), NL80211_ATTR_PAD))
9192                         goto nla_put_failure;
9193                 if (wdev->netdev &&
9194                     nla_put_u32(skb, NL80211_ATTR_IFINDEX,
9195                                 wdev->netdev->ifindex))
9196                         goto nla_put_failure;
9197         }
9198
9199         data = nla_nest_start(skb, attr);
9200         if (!data)
9201                 goto nla_put_failure;
9202
9203         ((void **)skb->cb)[0] = rdev;
9204         ((void **)skb->cb)[1] = hdr;
9205         ((void **)skb->cb)[2] = data;
9206
9207         return skb;
9208
9209  nla_put_failure:
9210         kfree_skb(skb);
9211         return NULL;
9212 }
9213
9214 struct sk_buff *__cfg80211_alloc_event_skb(struct wiphy *wiphy,
9215                                            struct wireless_dev *wdev,
9216                                            enum nl80211_commands cmd,
9217                                            enum nl80211_attrs attr,
9218                                            int vendor_event_idx,
9219                                            int approxlen, gfp_t gfp)
9220 {
9221         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
9222         const struct nl80211_vendor_cmd_info *info;
9223
9224         switch (cmd) {
9225         case NL80211_CMD_TESTMODE:
9226                 if (WARN_ON(vendor_event_idx != -1))
9227                         return NULL;
9228                 info = NULL;
9229                 break;
9230         case NL80211_CMD_VENDOR:
9231                 if (WARN_ON(vendor_event_idx < 0 ||
9232                             vendor_event_idx >= wiphy->n_vendor_events))
9233                         return NULL;
9234                 info = &wiphy->vendor_events[vendor_event_idx];
9235                 break;
9236         default:
9237                 WARN_ON(1);
9238                 return NULL;
9239         }
9240
9241         return __cfg80211_alloc_vendor_skb(rdev, wdev, approxlen, 0, 0,
9242                                            cmd, attr, info, gfp);
9243 }
9244 EXPORT_SYMBOL(__cfg80211_alloc_event_skb);
9245
9246 void __cfg80211_send_event_skb(struct sk_buff *skb, gfp_t gfp)
9247 {
9248         struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
9249         void *hdr = ((void **)skb->cb)[1];
9250         struct nlattr *data = ((void **)skb->cb)[2];
9251         enum nl80211_multicast_groups mcgrp = NL80211_MCGRP_TESTMODE;
9252
9253         /* clear CB data for netlink core to own from now on */
9254         memset(skb->cb, 0, sizeof(skb->cb));
9255
9256         nla_nest_end(skb, data);
9257         genlmsg_end(skb, hdr);
9258
9259         if (data->nla_type == NL80211_ATTR_VENDOR_DATA)
9260                 mcgrp = NL80211_MCGRP_VENDOR;
9261
9262         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), skb, 0,
9263                                 mcgrp, gfp);
9264 }
9265 EXPORT_SYMBOL(__cfg80211_send_event_skb);
9266
9267 #ifdef CONFIG_NL80211_TESTMODE
9268 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
9269 {
9270         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9271         struct wireless_dev *wdev =
9272                 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
9273         int err;
9274
9275         if (!rdev->ops->testmode_cmd)
9276                 return -EOPNOTSUPP;
9277
9278         if (IS_ERR(wdev)) {
9279                 err = PTR_ERR(wdev);
9280                 if (err != -EINVAL)
9281                         return err;
9282                 wdev = NULL;
9283         } else if (wdev->wiphy != &rdev->wiphy) {
9284                 return -EINVAL;
9285         }
9286
9287         if (!info->attrs[NL80211_ATTR_TESTDATA])
9288                 return -EINVAL;
9289
9290         rdev->cur_cmd_info = info;
9291         err = rdev_testmode_cmd(rdev, wdev,
9292                                 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
9293                                 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
9294         rdev->cur_cmd_info = NULL;
9295
9296         return err;
9297 }
9298
9299 static int nl80211_testmode_dump(struct sk_buff *skb,
9300                                  struct netlink_callback *cb)
9301 {
9302         struct cfg80211_registered_device *rdev;
9303         int err;
9304         long phy_idx;
9305         void *data = NULL;
9306         int data_len = 0;
9307
9308         rtnl_lock();
9309
9310         if (cb->args[0]) {
9311                 /*
9312                  * 0 is a valid index, but not valid for args[0],
9313                  * so we need to offset by 1.
9314                  */
9315                 phy_idx = cb->args[0] - 1;
9316
9317                 rdev = cfg80211_rdev_by_wiphy_idx(phy_idx);
9318                 if (!rdev) {
9319                         err = -ENOENT;
9320                         goto out_err;
9321                 }
9322         } else {
9323                 struct nlattr **attrbuf = genl_family_attrbuf(&nl80211_fam);
9324
9325                 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
9326                                   attrbuf, nl80211_fam.maxattr,
9327                                   nl80211_policy, NULL);
9328                 if (err)
9329                         goto out_err;
9330
9331                 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf);
9332                 if (IS_ERR(rdev)) {
9333                         err = PTR_ERR(rdev);
9334                         goto out_err;
9335                 }
9336                 phy_idx = rdev->wiphy_idx;
9337
9338                 if (attrbuf[NL80211_ATTR_TESTDATA])
9339                         cb->args[1] = (long)attrbuf[NL80211_ATTR_TESTDATA];
9340         }
9341
9342         if (cb->args[1]) {
9343                 data = nla_data((void *)cb->args[1]);
9344                 data_len = nla_len((void *)cb->args[1]);
9345         }
9346
9347         if (!rdev->ops->testmode_dump) {
9348                 err = -EOPNOTSUPP;
9349                 goto out_err;
9350         }
9351
9352         while (1) {
9353                 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
9354                                            cb->nlh->nlmsg_seq, NLM_F_MULTI,
9355                                            NL80211_CMD_TESTMODE);
9356                 struct nlattr *tmdata;
9357
9358                 if (!hdr)
9359                         break;
9360
9361                 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) {
9362                         genlmsg_cancel(skb, hdr);
9363                         break;
9364                 }
9365
9366                 tmdata = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
9367                 if (!tmdata) {
9368                         genlmsg_cancel(skb, hdr);
9369                         break;
9370                 }
9371                 err = rdev_testmode_dump(rdev, skb, cb, data, data_len);
9372                 nla_nest_end(skb, tmdata);
9373
9374                 if (err == -ENOBUFS || err == -ENOENT) {
9375                         genlmsg_cancel(skb, hdr);
9376                         break;
9377                 } else if (err) {
9378                         genlmsg_cancel(skb, hdr);
9379                         goto out_err;
9380                 }
9381
9382                 genlmsg_end(skb, hdr);
9383         }
9384
9385         err = skb->len;
9386         /* see above */
9387         cb->args[0] = phy_idx + 1;
9388  out_err:
9389         rtnl_unlock();
9390         return err;
9391 }
9392 #endif
9393
9394 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
9395 {
9396         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9397         struct net_device *dev = info->user_ptr[1];
9398         struct cfg80211_connect_params connect;
9399         struct wiphy *wiphy;
9400         struct cfg80211_cached_keys *connkeys = NULL;
9401         int err;
9402
9403         memset(&connect, 0, sizeof(connect));
9404
9405         if (!info->attrs[NL80211_ATTR_SSID] ||
9406             !nla_len(info->attrs[NL80211_ATTR_SSID]))
9407                 return -EINVAL;
9408
9409         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
9410                 connect.auth_type =
9411                         nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
9412                 if (!nl80211_valid_auth_type(rdev, connect.auth_type,
9413                                              NL80211_CMD_CONNECT))
9414                         return -EINVAL;
9415         } else
9416                 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
9417
9418         connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
9419
9420         if (info->attrs[NL80211_ATTR_WANT_1X_4WAY_HS] &&
9421             !wiphy_ext_feature_isset(&rdev->wiphy,
9422                                      NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
9423                 return -EINVAL;
9424         connect.want_1x = info->attrs[NL80211_ATTR_WANT_1X_4WAY_HS];
9425
9426         err = nl80211_crypto_settings(rdev, info, &connect.crypto,
9427                                       NL80211_MAX_NR_CIPHER_SUITES);
9428         if (err)
9429                 return err;
9430
9431         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9432             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9433                 return -EOPNOTSUPP;
9434
9435         wiphy = &rdev->wiphy;
9436
9437         connect.bg_scan_period = -1;
9438         if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] &&
9439                 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) {
9440                 connect.bg_scan_period =
9441                         nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]);
9442         }
9443
9444         if (info->attrs[NL80211_ATTR_MAC])
9445                 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9446         else if (info->attrs[NL80211_ATTR_MAC_HINT])
9447                 connect.bssid_hint =
9448                         nla_data(info->attrs[NL80211_ATTR_MAC_HINT]);
9449         connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
9450         connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
9451
9452         if (info->attrs[NL80211_ATTR_IE]) {
9453                 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9454                 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9455         }
9456
9457         if (info->attrs[NL80211_ATTR_USE_MFP]) {
9458                 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
9459                 if (connect.mfp == NL80211_MFP_OPTIONAL &&
9460                     !wiphy_ext_feature_isset(&rdev->wiphy,
9461                                              NL80211_EXT_FEATURE_MFP_OPTIONAL))
9462                         return -EOPNOTSUPP;
9463         } else {
9464                 connect.mfp = NL80211_MFP_NO;
9465         }
9466
9467         if (info->attrs[NL80211_ATTR_PREV_BSSID])
9468                 connect.prev_bssid =
9469                         nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
9470
9471         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
9472                 connect.channel = nl80211_get_valid_chan(
9473                         wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ]);
9474                 if (!connect.channel)
9475                         return -EINVAL;
9476         } else if (info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]) {
9477                 connect.channel_hint = nl80211_get_valid_chan(
9478                         wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]);
9479                 if (!connect.channel_hint)
9480                         return -EINVAL;
9481         }
9482
9483         if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
9484                 connkeys = nl80211_parse_connkeys(rdev, info, NULL);
9485                 if (IS_ERR(connkeys))
9486                         return PTR_ERR(connkeys);
9487         }
9488
9489         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
9490                 connect.flags |= ASSOC_REQ_DISABLE_HT;
9491
9492         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
9493                 memcpy(&connect.ht_capa_mask,
9494                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
9495                        sizeof(connect.ht_capa_mask));
9496
9497         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
9498                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) {
9499                         kzfree(connkeys);
9500                         return -EINVAL;
9501                 }
9502                 memcpy(&connect.ht_capa,
9503                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
9504                        sizeof(connect.ht_capa));
9505         }
9506
9507         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
9508                 connect.flags |= ASSOC_REQ_DISABLE_VHT;
9509
9510         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
9511                 memcpy(&connect.vht_capa_mask,
9512                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
9513                        sizeof(connect.vht_capa_mask));
9514
9515         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
9516                 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) {
9517                         kzfree(connkeys);
9518                         return -EINVAL;
9519                 }
9520                 memcpy(&connect.vht_capa,
9521                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
9522                        sizeof(connect.vht_capa));
9523         }
9524
9525         if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
9526                 if (!((rdev->wiphy.features &
9527                         NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
9528                        (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
9529                     !wiphy_ext_feature_isset(&rdev->wiphy,
9530                                              NL80211_EXT_FEATURE_RRM)) {
9531                         kzfree(connkeys);
9532                         return -EINVAL;
9533                 }
9534                 connect.flags |= ASSOC_REQ_USE_RRM;
9535         }
9536
9537         connect.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
9538         if (connect.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ]) {
9539                 kzfree(connkeys);
9540                 return -EOPNOTSUPP;
9541         }
9542
9543         if (info->attrs[NL80211_ATTR_BSS_SELECT]) {
9544                 /* bss selection makes no sense if bssid is set */
9545                 if (connect.bssid) {
9546                         kzfree(connkeys);
9547                         return -EINVAL;
9548                 }
9549
9550                 err = parse_bss_select(info->attrs[NL80211_ATTR_BSS_SELECT],
9551                                        wiphy, &connect.bss_select);
9552                 if (err) {
9553                         kzfree(connkeys);
9554                         return err;
9555                 }
9556         }
9557
9558         if (wiphy_ext_feature_isset(&rdev->wiphy,
9559                                     NL80211_EXT_FEATURE_FILS_SK_OFFLOAD) &&
9560             info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] &&
9561             info->attrs[NL80211_ATTR_FILS_ERP_REALM] &&
9562             info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] &&
9563             info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
9564                 connect.fils_erp_username =
9565                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
9566                 connect.fils_erp_username_len =
9567                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
9568                 connect.fils_erp_realm =
9569                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
9570                 connect.fils_erp_realm_len =
9571                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
9572                 connect.fils_erp_next_seq_num =
9573                         nla_get_u16(
9574                            info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM]);
9575                 connect.fils_erp_rrk =
9576                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
9577                 connect.fils_erp_rrk_len =
9578                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
9579         } else if (info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] ||
9580                    info->attrs[NL80211_ATTR_FILS_ERP_REALM] ||
9581                    info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] ||
9582                    info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
9583                 kzfree(connkeys);
9584                 return -EINVAL;
9585         }
9586
9587         if (nla_get_flag(info->attrs[NL80211_ATTR_EXTERNAL_AUTH_SUPPORT])) {
9588                 if (!info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
9589                         kzfree(connkeys);
9590                         GENL_SET_ERR_MSG(info,
9591                                          "external auth requires connection ownership");
9592                         return -EINVAL;
9593                 }
9594                 connect.flags |= CONNECT_REQ_EXTERNAL_AUTH_SUPPORT;
9595         }
9596
9597         wdev_lock(dev->ieee80211_ptr);
9598
9599         err = cfg80211_connect(rdev, dev, &connect, connkeys,
9600                                connect.prev_bssid);
9601         if (err)
9602                 kzfree(connkeys);
9603
9604         if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
9605                 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
9606                 if (connect.bssid)
9607                         memcpy(dev->ieee80211_ptr->disconnect_bssid,
9608                                connect.bssid, ETH_ALEN);
9609                 else
9610                         memset(dev->ieee80211_ptr->disconnect_bssid,
9611                                0, ETH_ALEN);
9612         }
9613
9614         wdev_unlock(dev->ieee80211_ptr);
9615
9616         return err;
9617 }
9618
9619 static int nl80211_update_connect_params(struct sk_buff *skb,
9620                                          struct genl_info *info)
9621 {
9622         struct cfg80211_connect_params connect = {};
9623         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9624         struct net_device *dev = info->user_ptr[1];
9625         struct wireless_dev *wdev = dev->ieee80211_ptr;
9626         bool fils_sk_offload;
9627         u32 auth_type;
9628         u32 changed = 0;
9629         int ret;
9630
9631         if (!rdev->ops->update_connect_params)
9632                 return -EOPNOTSUPP;
9633
9634         if (info->attrs[NL80211_ATTR_IE]) {
9635                 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9636                 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9637                 changed |= UPDATE_ASSOC_IES;
9638         }
9639
9640         fils_sk_offload = wiphy_ext_feature_isset(&rdev->wiphy,
9641                                                   NL80211_EXT_FEATURE_FILS_SK_OFFLOAD);
9642
9643         /*
9644          * when driver supports fils-sk offload all attributes must be
9645          * provided. So the else covers "fils-sk-not-all" and
9646          * "no-fils-sk-any".
9647          */
9648         if (fils_sk_offload &&
9649             info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] &&
9650             info->attrs[NL80211_ATTR_FILS_ERP_REALM] &&
9651             info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] &&
9652             info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
9653                 connect.fils_erp_username =
9654                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
9655                 connect.fils_erp_username_len =
9656                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
9657                 connect.fils_erp_realm =
9658                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
9659                 connect.fils_erp_realm_len =
9660                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
9661                 connect.fils_erp_next_seq_num =
9662                         nla_get_u16(
9663                            info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM]);
9664                 connect.fils_erp_rrk =
9665                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
9666                 connect.fils_erp_rrk_len =
9667                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
9668                 changed |= UPDATE_FILS_ERP_INFO;
9669         } else if (info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] ||
9670                    info->attrs[NL80211_ATTR_FILS_ERP_REALM] ||
9671                    info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] ||
9672                    info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
9673                 return -EINVAL;
9674         }
9675
9676         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
9677                 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
9678                 if (!nl80211_valid_auth_type(rdev, auth_type,
9679                                              NL80211_CMD_CONNECT))
9680                         return -EINVAL;
9681
9682                 if (auth_type == NL80211_AUTHTYPE_FILS_SK &&
9683                     fils_sk_offload && !(changed & UPDATE_FILS_ERP_INFO))
9684                         return -EINVAL;
9685
9686                 connect.auth_type = auth_type;
9687                 changed |= UPDATE_AUTH_TYPE;
9688         }
9689
9690         wdev_lock(dev->ieee80211_ptr);
9691         if (!wdev->current_bss)
9692                 ret = -ENOLINK;
9693         else
9694                 ret = rdev_update_connect_params(rdev, dev, &connect, changed);
9695         wdev_unlock(dev->ieee80211_ptr);
9696
9697         return ret;
9698 }
9699
9700 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
9701 {
9702         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9703         struct net_device *dev = info->user_ptr[1];
9704         u16 reason;
9705         int ret;
9706
9707         if (dev->ieee80211_ptr->conn_owner_nlportid &&
9708             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
9709                 return -EPERM;
9710
9711         if (!info->attrs[NL80211_ATTR_REASON_CODE])
9712                 reason = WLAN_REASON_DEAUTH_LEAVING;
9713         else
9714                 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
9715
9716         if (reason == 0)
9717                 return -EINVAL;
9718
9719         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9720             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9721                 return -EOPNOTSUPP;
9722
9723         wdev_lock(dev->ieee80211_ptr);
9724         ret = cfg80211_disconnect(rdev, dev, reason, true);
9725         wdev_unlock(dev->ieee80211_ptr);
9726         return ret;
9727 }
9728
9729 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
9730 {
9731         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9732         struct net *net;
9733         int err;
9734
9735         if (info->attrs[NL80211_ATTR_PID]) {
9736                 u32 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
9737
9738                 net = get_net_ns_by_pid(pid);
9739         } else if (info->attrs[NL80211_ATTR_NETNS_FD]) {
9740                 u32 fd = nla_get_u32(info->attrs[NL80211_ATTR_NETNS_FD]);
9741
9742                 net = get_net_ns_by_fd(fd);
9743         } else {
9744                 return -EINVAL;
9745         }
9746
9747         if (IS_ERR(net))
9748                 return PTR_ERR(net);
9749
9750         err = 0;
9751
9752         /* check if anything to do */
9753         if (!net_eq(wiphy_net(&rdev->wiphy), net))
9754                 err = cfg80211_switch_netns(rdev, net);
9755
9756         put_net(net);
9757         return err;
9758 }
9759
9760 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
9761 {
9762         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9763         int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
9764                         struct cfg80211_pmksa *pmksa) = NULL;
9765         struct net_device *dev = info->user_ptr[1];
9766         struct cfg80211_pmksa pmksa;
9767
9768         memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
9769
9770         if (!info->attrs[NL80211_ATTR_PMKID])
9771                 return -EINVAL;
9772
9773         pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
9774
9775         if (info->attrs[NL80211_ATTR_MAC]) {
9776                 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9777         } else if (info->attrs[NL80211_ATTR_SSID] &&
9778                    info->attrs[NL80211_ATTR_FILS_CACHE_ID] &&
9779                    (info->genlhdr->cmd == NL80211_CMD_DEL_PMKSA ||
9780                     info->attrs[NL80211_ATTR_PMK])) {
9781                 pmksa.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
9782                 pmksa.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
9783                 pmksa.cache_id =
9784                         nla_data(info->attrs[NL80211_ATTR_FILS_CACHE_ID]);
9785         } else {
9786                 return -EINVAL;
9787         }
9788         if (info->attrs[NL80211_ATTR_PMK]) {
9789                 pmksa.pmk = nla_data(info->attrs[NL80211_ATTR_PMK]);
9790                 pmksa.pmk_len = nla_len(info->attrs[NL80211_ATTR_PMK]);
9791         }
9792
9793         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9794             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9795                 return -EOPNOTSUPP;
9796
9797         switch (info->genlhdr->cmd) {
9798         case NL80211_CMD_SET_PMKSA:
9799                 rdev_ops = rdev->ops->set_pmksa;
9800                 break;
9801         case NL80211_CMD_DEL_PMKSA:
9802                 rdev_ops = rdev->ops->del_pmksa;
9803                 break;
9804         default:
9805                 WARN_ON(1);
9806                 break;
9807         }
9808
9809         if (!rdev_ops)
9810                 return -EOPNOTSUPP;
9811
9812         return rdev_ops(&rdev->wiphy, dev, &pmksa);
9813 }
9814
9815 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
9816 {
9817         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9818         struct net_device *dev = info->user_ptr[1];
9819
9820         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9821             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9822                 return -EOPNOTSUPP;
9823
9824         if (!rdev->ops->flush_pmksa)
9825                 return -EOPNOTSUPP;
9826
9827         return rdev_flush_pmksa(rdev, dev);
9828 }
9829
9830 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
9831 {
9832         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9833         struct net_device *dev = info->user_ptr[1];
9834         u8 action_code, dialog_token;
9835         u32 peer_capability = 0;
9836         u16 status_code;
9837         u8 *peer;
9838         bool initiator;
9839
9840         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
9841             !rdev->ops->tdls_mgmt)
9842                 return -EOPNOTSUPP;
9843
9844         if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
9845             !info->attrs[NL80211_ATTR_STATUS_CODE] ||
9846             !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
9847             !info->attrs[NL80211_ATTR_IE] ||
9848             !info->attrs[NL80211_ATTR_MAC])
9849                 return -EINVAL;
9850
9851         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
9852         action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
9853         status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
9854         dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
9855         initiator = nla_get_flag(info->attrs[NL80211_ATTR_TDLS_INITIATOR]);
9856         if (info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY])
9857                 peer_capability =
9858                         nla_get_u32(info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY]);
9859
9860         return rdev_tdls_mgmt(rdev, dev, peer, action_code,
9861                               dialog_token, status_code, peer_capability,
9862                               initiator,
9863                               nla_data(info->attrs[NL80211_ATTR_IE]),
9864                               nla_len(info->attrs[NL80211_ATTR_IE]));
9865 }
9866
9867 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
9868 {
9869         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9870         struct net_device *dev = info->user_ptr[1];
9871         enum nl80211_tdls_operation operation;
9872         u8 *peer;
9873
9874         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
9875             !rdev->ops->tdls_oper)
9876                 return -EOPNOTSUPP;
9877
9878         if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
9879             !info->attrs[NL80211_ATTR_MAC])
9880                 return -EINVAL;
9881
9882         operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
9883         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
9884
9885         return rdev_tdls_oper(rdev, dev, peer, operation);
9886 }
9887
9888 static int nl80211_remain_on_channel(struct sk_buff *skb,
9889                                      struct genl_info *info)
9890 {
9891         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9892         struct wireless_dev *wdev = info->user_ptr[1];
9893         struct cfg80211_chan_def chandef;
9894         const struct cfg80211_chan_def *compat_chandef;
9895         struct sk_buff *msg;
9896         void *hdr;
9897         u64 cookie;
9898         u32 duration;
9899         int err;
9900
9901         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
9902             !info->attrs[NL80211_ATTR_DURATION])
9903                 return -EINVAL;
9904
9905         duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
9906
9907         if (!rdev->ops->remain_on_channel ||
9908             !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL))
9909                 return -EOPNOTSUPP;
9910
9911         /*
9912          * We should be on that channel for at least a minimum amount of
9913          * time (10ms) but no longer than the driver supports.
9914          */
9915         if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
9916             duration > rdev->wiphy.max_remain_on_channel_duration)
9917                 return -EINVAL;
9918
9919         err = nl80211_parse_chandef(rdev, info, &chandef);
9920         if (err)
9921                 return err;
9922
9923         wdev_lock(wdev);
9924         if (!cfg80211_off_channel_oper_allowed(wdev) &&
9925             !cfg80211_chandef_identical(&wdev->chandef, &chandef)) {
9926                 compat_chandef = cfg80211_chandef_compatible(&wdev->chandef,
9927                                                              &chandef);
9928                 if (compat_chandef != &chandef) {
9929                         wdev_unlock(wdev);
9930                         return -EBUSY;
9931                 }
9932         }
9933         wdev_unlock(wdev);
9934
9935         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9936         if (!msg)
9937                 return -ENOMEM;
9938
9939         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9940                              NL80211_CMD_REMAIN_ON_CHANNEL);
9941         if (!hdr) {
9942                 err = -ENOBUFS;
9943                 goto free_msg;
9944         }
9945
9946         err = rdev_remain_on_channel(rdev, wdev, chandef.chan,
9947                                      duration, &cookie);
9948
9949         if (err)
9950                 goto free_msg;
9951
9952         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
9953                               NL80211_ATTR_PAD))
9954                 goto nla_put_failure;
9955
9956         genlmsg_end(msg, hdr);
9957
9958         return genlmsg_reply(msg, info);
9959
9960  nla_put_failure:
9961         err = -ENOBUFS;
9962  free_msg:
9963         nlmsg_free(msg);
9964         return err;
9965 }
9966
9967 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
9968                                             struct genl_info *info)
9969 {
9970         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9971         struct wireless_dev *wdev = info->user_ptr[1];
9972         u64 cookie;
9973
9974         if (!info->attrs[NL80211_ATTR_COOKIE])
9975                 return -EINVAL;
9976
9977         if (!rdev->ops->cancel_remain_on_channel)
9978                 return -EOPNOTSUPP;
9979
9980         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
9981
9982         return rdev_cancel_remain_on_channel(rdev, wdev, cookie);
9983 }
9984
9985 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
9986                                        struct genl_info *info)
9987 {
9988         struct cfg80211_bitrate_mask mask;
9989         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9990         struct net_device *dev = info->user_ptr[1];
9991         int err;
9992
9993         if (!rdev->ops->set_bitrate_mask)
9994                 return -EOPNOTSUPP;
9995
9996         err = nl80211_parse_tx_bitrate_mask(info, &mask);
9997         if (err)
9998                 return err;
9999
10000         return rdev_set_bitrate_mask(rdev, dev, NULL, &mask);
10001 }
10002
10003 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
10004 {
10005         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10006         struct wireless_dev *wdev = info->user_ptr[1];
10007         u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
10008
10009         if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
10010                 return -EINVAL;
10011
10012         if (info->attrs[NL80211_ATTR_FRAME_TYPE])
10013                 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
10014
10015         switch (wdev->iftype) {
10016         case NL80211_IFTYPE_STATION:
10017         case NL80211_IFTYPE_ADHOC:
10018         case NL80211_IFTYPE_P2P_CLIENT:
10019         case NL80211_IFTYPE_AP:
10020         case NL80211_IFTYPE_AP_VLAN:
10021         case NL80211_IFTYPE_MESH_POINT:
10022         case NL80211_IFTYPE_P2P_GO:
10023         case NL80211_IFTYPE_P2P_DEVICE:
10024                 break;
10025         case NL80211_IFTYPE_NAN:
10026         default:
10027                 return -EOPNOTSUPP;
10028         }
10029
10030         /* not much point in registering if we can't reply */
10031         if (!rdev->ops->mgmt_tx)
10032                 return -EOPNOTSUPP;
10033
10034         return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type,
10035                         nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
10036                         nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]));
10037 }
10038
10039 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
10040 {
10041         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10042         struct wireless_dev *wdev = info->user_ptr[1];
10043         struct cfg80211_chan_def chandef;
10044         int err;
10045         void *hdr = NULL;
10046         u64 cookie;
10047         struct sk_buff *msg = NULL;
10048         struct cfg80211_mgmt_tx_params params = {
10049                 .dont_wait_for_ack =
10050                         info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK],
10051         };
10052
10053         if (!info->attrs[NL80211_ATTR_FRAME])
10054                 return -EINVAL;
10055
10056         if (!rdev->ops->mgmt_tx)
10057                 return -EOPNOTSUPP;
10058
10059         switch (wdev->iftype) {
10060         case NL80211_IFTYPE_P2P_DEVICE:
10061                 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
10062                         return -EINVAL;
10063         case NL80211_IFTYPE_STATION:
10064         case NL80211_IFTYPE_ADHOC:
10065         case NL80211_IFTYPE_P2P_CLIENT:
10066         case NL80211_IFTYPE_AP:
10067         case NL80211_IFTYPE_AP_VLAN:
10068         case NL80211_IFTYPE_MESH_POINT:
10069         case NL80211_IFTYPE_P2P_GO:
10070                 break;
10071         case NL80211_IFTYPE_NAN:
10072         default:
10073                 return -EOPNOTSUPP;
10074         }
10075
10076         if (info->attrs[NL80211_ATTR_DURATION]) {
10077                 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
10078                         return -EINVAL;
10079                 params.wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
10080
10081                 /*
10082                  * We should wait on the channel for at least a minimum amount
10083                  * of time (10ms) but no longer than the driver supports.
10084                  */
10085                 if (params.wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
10086                     params.wait > rdev->wiphy.max_remain_on_channel_duration)
10087                         return -EINVAL;
10088         }
10089
10090         params.offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
10091
10092         if (params.offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
10093                 return -EINVAL;
10094
10095         params.no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
10096
10097         /* get the channel if any has been specified, otherwise pass NULL to
10098          * the driver. The latter will use the current one
10099          */
10100         chandef.chan = NULL;
10101         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
10102                 err = nl80211_parse_chandef(rdev, info, &chandef);
10103                 if (err)
10104                         return err;
10105         }
10106
10107         if (!chandef.chan && params.offchan)
10108                 return -EINVAL;
10109
10110         wdev_lock(wdev);
10111         if (params.offchan && !cfg80211_off_channel_oper_allowed(wdev)) {
10112                 wdev_unlock(wdev);
10113                 return -EBUSY;
10114         }
10115         wdev_unlock(wdev);
10116
10117         params.buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
10118         params.len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
10119
10120         if (info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]) {
10121                 int len = nla_len(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
10122                 int i;
10123
10124                 if (len % sizeof(u16))
10125                         return -EINVAL;
10126
10127                 params.n_csa_offsets = len / sizeof(u16);
10128                 params.csa_offsets =
10129                         nla_data(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
10130
10131                 /* check that all the offsets fit the frame */
10132                 for (i = 0; i < params.n_csa_offsets; i++) {
10133                         if (params.csa_offsets[i] >= params.len)
10134                                 return -EINVAL;
10135                 }
10136         }
10137
10138         if (!params.dont_wait_for_ack) {
10139                 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10140                 if (!msg)
10141                         return -ENOMEM;
10142
10143                 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
10144                                      NL80211_CMD_FRAME);
10145                 if (!hdr) {
10146                         err = -ENOBUFS;
10147                         goto free_msg;
10148                 }
10149         }
10150
10151         params.chan = chandef.chan;
10152         err = cfg80211_mlme_mgmt_tx(rdev, wdev, &params, &cookie);
10153         if (err)
10154                 goto free_msg;
10155
10156         if (msg) {
10157                 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
10158                                       NL80211_ATTR_PAD))
10159                         goto nla_put_failure;
10160
10161                 genlmsg_end(msg, hdr);
10162                 return genlmsg_reply(msg, info);
10163         }
10164
10165         return 0;
10166
10167  nla_put_failure:
10168         err = -ENOBUFS;
10169  free_msg:
10170         nlmsg_free(msg);
10171         return err;
10172 }
10173
10174 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
10175 {
10176         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10177         struct wireless_dev *wdev = info->user_ptr[1];
10178         u64 cookie;
10179
10180         if (!info->attrs[NL80211_ATTR_COOKIE])
10181                 return -EINVAL;
10182
10183         if (!rdev->ops->mgmt_tx_cancel_wait)
10184                 return -EOPNOTSUPP;
10185
10186         switch (wdev->iftype) {
10187         case NL80211_IFTYPE_STATION:
10188         case NL80211_IFTYPE_ADHOC:
10189         case NL80211_IFTYPE_P2P_CLIENT:
10190         case NL80211_IFTYPE_AP:
10191         case NL80211_IFTYPE_AP_VLAN:
10192         case NL80211_IFTYPE_P2P_GO:
10193         case NL80211_IFTYPE_P2P_DEVICE:
10194                 break;
10195         case NL80211_IFTYPE_NAN:
10196         default:
10197                 return -EOPNOTSUPP;
10198         }
10199
10200         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
10201
10202         return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie);
10203 }
10204
10205 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
10206 {
10207         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10208         struct wireless_dev *wdev;
10209         struct net_device *dev = info->user_ptr[1];
10210         u8 ps_state;
10211         bool state;
10212         int err;
10213
10214         if (!info->attrs[NL80211_ATTR_PS_STATE])
10215                 return -EINVAL;
10216
10217         ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
10218
10219         wdev = dev->ieee80211_ptr;
10220
10221         if (!rdev->ops->set_power_mgmt)
10222                 return -EOPNOTSUPP;
10223
10224         state = (ps_state == NL80211_PS_ENABLED) ? true : false;
10225
10226         if (state == wdev->ps)
10227                 return 0;
10228
10229         err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout);
10230         if (!err)
10231                 wdev->ps = state;
10232         return err;
10233 }
10234
10235 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
10236 {
10237         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10238         enum nl80211_ps_state ps_state;
10239         struct wireless_dev *wdev;
10240         struct net_device *dev = info->user_ptr[1];
10241         struct sk_buff *msg;
10242         void *hdr;
10243         int err;
10244
10245         wdev = dev->ieee80211_ptr;
10246
10247         if (!rdev->ops->set_power_mgmt)
10248                 return -EOPNOTSUPP;
10249
10250         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10251         if (!msg)
10252                 return -ENOMEM;
10253
10254         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
10255                              NL80211_CMD_GET_POWER_SAVE);
10256         if (!hdr) {
10257                 err = -ENOBUFS;
10258                 goto free_msg;
10259         }
10260
10261         if (wdev->ps)
10262                 ps_state = NL80211_PS_ENABLED;
10263         else
10264                 ps_state = NL80211_PS_DISABLED;
10265
10266         if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state))
10267                 goto nla_put_failure;
10268
10269         genlmsg_end(msg, hdr);
10270         return genlmsg_reply(msg, info);
10271
10272  nla_put_failure:
10273         err = -ENOBUFS;
10274  free_msg:
10275         nlmsg_free(msg);
10276         return err;
10277 }
10278
10279 static const struct nla_policy
10280 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] = {
10281         [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_BINARY },
10282         [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
10283         [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
10284         [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 },
10285         [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 },
10286         [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 },
10287         [NL80211_ATTR_CQM_RSSI_LEVEL] = { .type = NLA_S32 },
10288 };
10289
10290 static int nl80211_set_cqm_txe(struct genl_info *info,
10291                                u32 rate, u32 pkts, u32 intvl)
10292 {
10293         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10294         struct net_device *dev = info->user_ptr[1];
10295         struct wireless_dev *wdev = dev->ieee80211_ptr;
10296
10297         if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL)
10298                 return -EINVAL;
10299
10300         if (!rdev->ops->set_cqm_txe_config)
10301                 return -EOPNOTSUPP;
10302
10303         if (wdev->iftype != NL80211_IFTYPE_STATION &&
10304             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
10305                 return -EOPNOTSUPP;
10306
10307         return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl);
10308 }
10309
10310 static int cfg80211_cqm_rssi_update(struct cfg80211_registered_device *rdev,
10311                                     struct net_device *dev)
10312 {
10313         struct wireless_dev *wdev = dev->ieee80211_ptr;
10314         s32 last, low, high;
10315         u32 hyst;
10316         int i, n, low_index;
10317         int err;
10318
10319         /* RSSI reporting disabled? */
10320         if (!wdev->cqm_config)
10321                 return rdev_set_cqm_rssi_range_config(rdev, dev, 0, 0);
10322
10323         /*
10324          * Obtain current RSSI value if possible, if not and no RSSI threshold
10325          * event has been received yet, we should receive an event after a
10326          * connection is established and enough beacons received to calculate
10327          * the average.
10328          */
10329         if (!wdev->cqm_config->last_rssi_event_value && wdev->current_bss &&
10330             rdev->ops->get_station) {
10331                 struct station_info sinfo = {};
10332                 u8 *mac_addr;
10333
10334                 mac_addr = wdev->current_bss->pub.bssid;
10335
10336                 err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
10337                 if (err)
10338                         return err;
10339
10340                 if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_BEACON_SIGNAL_AVG))
10341                         wdev->cqm_config->last_rssi_event_value =
10342                                 (s8) sinfo.rx_beacon_signal_avg;
10343         }
10344
10345         last = wdev->cqm_config->last_rssi_event_value;
10346         hyst = wdev->cqm_config->rssi_hyst;
10347         n = wdev->cqm_config->n_rssi_thresholds;
10348
10349         for (i = 0; i < n; i++)
10350                 if (last < wdev->cqm_config->rssi_thresholds[i])
10351                         break;
10352
10353         low_index = i - 1;
10354         if (low_index >= 0) {
10355                 low_index = array_index_nospec(low_index, n);
10356                 low = wdev->cqm_config->rssi_thresholds[low_index] - hyst;
10357         } else {
10358                 low = S32_MIN;
10359         }
10360         if (i < n) {
10361                 i = array_index_nospec(i, n);
10362                 high = wdev->cqm_config->rssi_thresholds[i] + hyst - 1;
10363         } else {
10364                 high = S32_MAX;
10365         }
10366
10367         return rdev_set_cqm_rssi_range_config(rdev, dev, low, high);
10368 }
10369
10370 static int nl80211_set_cqm_rssi(struct genl_info *info,
10371                                 const s32 *thresholds, int n_thresholds,
10372                                 u32 hysteresis)
10373 {
10374         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10375         struct net_device *dev = info->user_ptr[1];
10376         struct wireless_dev *wdev = dev->ieee80211_ptr;
10377         int i, err;
10378         s32 prev = S32_MIN;
10379
10380         /* Check all values negative and sorted */
10381         for (i = 0; i < n_thresholds; i++) {
10382                 if (thresholds[i] > 0 || thresholds[i] <= prev)
10383                         return -EINVAL;
10384
10385                 prev = thresholds[i];
10386         }
10387
10388         if (wdev->iftype != NL80211_IFTYPE_STATION &&
10389             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
10390                 return -EOPNOTSUPP;
10391
10392         wdev_lock(wdev);
10393         cfg80211_cqm_config_free(wdev);
10394         wdev_unlock(wdev);
10395
10396         if (n_thresholds <= 1 && rdev->ops->set_cqm_rssi_config) {
10397                 if (n_thresholds == 0 || thresholds[0] == 0) /* Disabling */
10398                         return rdev_set_cqm_rssi_config(rdev, dev, 0, 0);
10399
10400                 return rdev_set_cqm_rssi_config(rdev, dev,
10401                                                 thresholds[0], hysteresis);
10402         }
10403
10404         if (!wiphy_ext_feature_isset(&rdev->wiphy,
10405                                      NL80211_EXT_FEATURE_CQM_RSSI_LIST))
10406                 return -EOPNOTSUPP;
10407
10408         if (n_thresholds == 1 && thresholds[0] == 0) /* Disabling */
10409                 n_thresholds = 0;
10410
10411         wdev_lock(wdev);
10412         if (n_thresholds) {
10413                 struct cfg80211_cqm_config *cqm_config;
10414
10415                 cqm_config = kzalloc(sizeof(struct cfg80211_cqm_config) +
10416                                      n_thresholds * sizeof(s32), GFP_KERNEL);
10417                 if (!cqm_config) {
10418                         err = -ENOMEM;
10419                         goto unlock;
10420                 }
10421
10422                 cqm_config->rssi_hyst = hysteresis;
10423                 cqm_config->n_rssi_thresholds = n_thresholds;
10424                 memcpy(cqm_config->rssi_thresholds, thresholds,
10425                        n_thresholds * sizeof(s32));
10426
10427                 wdev->cqm_config = cqm_config;
10428         }
10429
10430         err = cfg80211_cqm_rssi_update(rdev, dev);
10431
10432 unlock:
10433         wdev_unlock(wdev);
10434
10435         return err;
10436 }
10437
10438 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
10439 {
10440         struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
10441         struct nlattr *cqm;
10442         int err;
10443
10444         cqm = info->attrs[NL80211_ATTR_CQM];
10445         if (!cqm)
10446                 return -EINVAL;
10447
10448         err = nla_parse_nested(attrs, NL80211_ATTR_CQM_MAX, cqm,
10449                                nl80211_attr_cqm_policy, info->extack);
10450         if (err)
10451                 return err;
10452
10453         if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
10454             attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
10455                 const s32 *thresholds =
10456                         nla_data(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
10457                 int len = nla_len(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
10458                 u32 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
10459
10460                 if (len % 4)
10461                         return -EINVAL;
10462
10463                 return nl80211_set_cqm_rssi(info, thresholds, len / 4,
10464                                             hysteresis);
10465         }
10466
10467         if (attrs[NL80211_ATTR_CQM_TXE_RATE] &&
10468             attrs[NL80211_ATTR_CQM_TXE_PKTS] &&
10469             attrs[NL80211_ATTR_CQM_TXE_INTVL]) {
10470                 u32 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]);
10471                 u32 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]);
10472                 u32 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]);
10473
10474                 return nl80211_set_cqm_txe(info, rate, pkts, intvl);
10475         }
10476
10477         return -EINVAL;
10478 }
10479
10480 static int nl80211_join_ocb(struct sk_buff *skb, struct genl_info *info)
10481 {
10482         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10483         struct net_device *dev = info->user_ptr[1];
10484         struct ocb_setup setup = {};
10485         int err;
10486
10487         err = nl80211_parse_chandef(rdev, info, &setup.chandef);
10488         if (err)
10489                 return err;
10490
10491         return cfg80211_join_ocb(rdev, dev, &setup);
10492 }
10493
10494 static int nl80211_leave_ocb(struct sk_buff *skb, struct genl_info *info)
10495 {
10496         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10497         struct net_device *dev = info->user_ptr[1];
10498
10499         return cfg80211_leave_ocb(rdev, dev);
10500 }
10501
10502 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
10503 {
10504         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10505         struct net_device *dev = info->user_ptr[1];
10506         struct mesh_config cfg;
10507         struct mesh_setup setup;
10508         int err;
10509
10510         /* start with default */
10511         memcpy(&cfg, &default_mesh_config, sizeof(cfg));
10512         memcpy(&setup, &default_mesh_setup, sizeof(setup));
10513
10514         if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
10515                 /* and parse parameters if given */
10516                 err = nl80211_parse_mesh_config(info, &cfg, NULL);
10517                 if (err)
10518                         return err;
10519         }
10520
10521         if (!info->attrs[NL80211_ATTR_MESH_ID] ||
10522             !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
10523                 return -EINVAL;
10524
10525         setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
10526         setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
10527
10528         if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
10529             !nl80211_parse_mcast_rate(rdev, setup.mcast_rate,
10530                             nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
10531                         return -EINVAL;
10532
10533         if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
10534                 setup.beacon_interval =
10535                         nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
10536
10537                 err = cfg80211_validate_beacon_int(rdev,
10538                                                    NL80211_IFTYPE_MESH_POINT,
10539                                                    setup.beacon_interval);
10540                 if (err)
10541                         return err;
10542         }
10543
10544         if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
10545                 setup.dtim_period =
10546                         nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
10547                 if (setup.dtim_period < 1 || setup.dtim_period > 100)
10548                         return -EINVAL;
10549         }
10550
10551         if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
10552                 /* parse additional setup parameters if given */
10553                 err = nl80211_parse_mesh_setup(info, &setup);
10554                 if (err)
10555                         return err;
10556         }
10557
10558         if (setup.user_mpm)
10559                 cfg.auto_open_plinks = false;
10560
10561         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
10562                 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
10563                 if (err)
10564                         return err;
10565         } else {
10566                 /* __cfg80211_join_mesh() will sort it out */
10567                 setup.chandef.chan = NULL;
10568         }
10569
10570         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
10571                 u8 *rates = nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
10572                 int n_rates =
10573                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
10574                 struct ieee80211_supported_band *sband;
10575
10576                 if (!setup.chandef.chan)
10577                         return -EINVAL;
10578
10579                 sband = rdev->wiphy.bands[setup.chandef.chan->band];
10580
10581                 err = ieee80211_get_ratemask(sband, rates, n_rates,
10582                                              &setup.basic_rates);
10583                 if (err)
10584                         return err;
10585         }
10586
10587         if (info->attrs[NL80211_ATTR_TX_RATES]) {
10588                 err = nl80211_parse_tx_bitrate_mask(info, &setup.beacon_rate);
10589                 if (err)
10590                         return err;
10591
10592                 if (!setup.chandef.chan)
10593                         return -EINVAL;
10594
10595                 err = validate_beacon_tx_rate(rdev, setup.chandef.chan->band,
10596                                               &setup.beacon_rate);
10597                 if (err)
10598                         return err;
10599         }
10600
10601         setup.userspace_handles_dfs =
10602                 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
10603
10604         if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
10605                 int r = validate_pae_over_nl80211(rdev, info);
10606
10607                 if (r < 0)
10608                         return r;
10609
10610                 setup.control_port_over_nl80211 = true;
10611         }
10612
10613         wdev_lock(dev->ieee80211_ptr);
10614         err = __cfg80211_join_mesh(rdev, dev, &setup, &cfg);
10615         if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER])
10616                 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
10617         wdev_unlock(dev->ieee80211_ptr);
10618
10619         return err;
10620 }
10621
10622 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
10623 {
10624         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10625         struct net_device *dev = info->user_ptr[1];
10626
10627         return cfg80211_leave_mesh(rdev, dev);
10628 }
10629
10630 #ifdef CONFIG_PM
10631 static int nl80211_send_wowlan_patterns(struct sk_buff *msg,
10632                                         struct cfg80211_registered_device *rdev)
10633 {
10634         struct cfg80211_wowlan *wowlan = rdev->wiphy.wowlan_config;
10635         struct nlattr *nl_pats, *nl_pat;
10636         int i, pat_len;
10637
10638         if (!wowlan->n_patterns)
10639                 return 0;
10640
10641         nl_pats = nla_nest_start(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN);
10642         if (!nl_pats)
10643                 return -ENOBUFS;
10644
10645         for (i = 0; i < wowlan->n_patterns; i++) {
10646                 nl_pat = nla_nest_start(msg, i + 1);
10647                 if (!nl_pat)
10648                         return -ENOBUFS;
10649                 pat_len = wowlan->patterns[i].pattern_len;
10650                 if (nla_put(msg, NL80211_PKTPAT_MASK, DIV_ROUND_UP(pat_len, 8),
10651                             wowlan->patterns[i].mask) ||
10652                     nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
10653                             wowlan->patterns[i].pattern) ||
10654                     nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
10655                                 wowlan->patterns[i].pkt_offset))
10656                         return -ENOBUFS;
10657                 nla_nest_end(msg, nl_pat);
10658         }
10659         nla_nest_end(msg, nl_pats);
10660
10661         return 0;
10662 }
10663
10664 static int nl80211_send_wowlan_tcp(struct sk_buff *msg,
10665                                    struct cfg80211_wowlan_tcp *tcp)
10666 {
10667         struct nlattr *nl_tcp;
10668
10669         if (!tcp)
10670                 return 0;
10671
10672         nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
10673         if (!nl_tcp)
10674                 return -ENOBUFS;
10675
10676         if (nla_put_in_addr(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) ||
10677             nla_put_in_addr(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) ||
10678             nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) ||
10679             nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) ||
10680             nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) ||
10681             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
10682                     tcp->payload_len, tcp->payload) ||
10683             nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
10684                         tcp->data_interval) ||
10685             nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
10686                     tcp->wake_len, tcp->wake_data) ||
10687             nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK,
10688                     DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask))
10689                 return -ENOBUFS;
10690
10691         if (tcp->payload_seq.len &&
10692             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ,
10693                     sizeof(tcp->payload_seq), &tcp->payload_seq))
10694                 return -ENOBUFS;
10695
10696         if (tcp->payload_tok.len &&
10697             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
10698                     sizeof(tcp->payload_tok) + tcp->tokens_size,
10699                     &tcp->payload_tok))
10700                 return -ENOBUFS;
10701
10702         nla_nest_end(msg, nl_tcp);
10703
10704         return 0;
10705 }
10706
10707 static int nl80211_send_wowlan_nd(struct sk_buff *msg,
10708                                   struct cfg80211_sched_scan_request *req)
10709 {
10710         struct nlattr *nd, *freqs, *matches, *match, *scan_plans, *scan_plan;
10711         int i;
10712
10713         if (!req)
10714                 return 0;
10715
10716         nd = nla_nest_start(msg, NL80211_WOWLAN_TRIG_NET_DETECT);
10717         if (!nd)
10718                 return -ENOBUFS;
10719
10720         if (req->n_scan_plans == 1 &&
10721             nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_INTERVAL,
10722                         req->scan_plans[0].interval * 1000))
10723                 return -ENOBUFS;
10724
10725         if (nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_DELAY, req->delay))
10726                 return -ENOBUFS;
10727
10728         if (req->relative_rssi_set) {
10729                 struct nl80211_bss_select_rssi_adjust rssi_adjust;
10730
10731                 if (nla_put_s8(msg, NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI,
10732                                req->relative_rssi))
10733                         return -ENOBUFS;
10734
10735                 rssi_adjust.band = req->rssi_adjust.band;
10736                 rssi_adjust.delta = req->rssi_adjust.delta;
10737                 if (nla_put(msg, NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST,
10738                             sizeof(rssi_adjust), &rssi_adjust))
10739                         return -ENOBUFS;
10740         }
10741
10742         freqs = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
10743         if (!freqs)
10744                 return -ENOBUFS;
10745
10746         for (i = 0; i < req->n_channels; i++) {
10747                 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
10748                         return -ENOBUFS;
10749         }
10750
10751         nla_nest_end(msg, freqs);
10752
10753         if (req->n_match_sets) {
10754                 matches = nla_nest_start(msg, NL80211_ATTR_SCHED_SCAN_MATCH);
10755                 if (!matches)
10756                         return -ENOBUFS;
10757
10758                 for (i = 0; i < req->n_match_sets; i++) {
10759                         match = nla_nest_start(msg, i);
10760                         if (!match)
10761                                 return -ENOBUFS;
10762
10763                         if (nla_put(msg, NL80211_SCHED_SCAN_MATCH_ATTR_SSID,
10764                                     req->match_sets[i].ssid.ssid_len,
10765                                     req->match_sets[i].ssid.ssid))
10766                                 return -ENOBUFS;
10767                         nla_nest_end(msg, match);
10768                 }
10769                 nla_nest_end(msg, matches);
10770         }
10771
10772         scan_plans = nla_nest_start(msg, NL80211_ATTR_SCHED_SCAN_PLANS);
10773         if (!scan_plans)
10774                 return -ENOBUFS;
10775
10776         for (i = 0; i < req->n_scan_plans; i++) {
10777                 scan_plan = nla_nest_start(msg, i + 1);
10778                 if (!scan_plan)
10779                         return -ENOBUFS;
10780
10781                 if (nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_INTERVAL,
10782                                 req->scan_plans[i].interval) ||
10783                     (req->scan_plans[i].iterations &&
10784                      nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_ITERATIONS,
10785                                  req->scan_plans[i].iterations)))
10786                         return -ENOBUFS;
10787                 nla_nest_end(msg, scan_plan);
10788         }
10789         nla_nest_end(msg, scan_plans);
10790
10791         nla_nest_end(msg, nd);
10792
10793         return 0;
10794 }
10795
10796 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
10797 {
10798         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10799         struct sk_buff *msg;
10800         void *hdr;
10801         u32 size = NLMSG_DEFAULT_SIZE;
10802
10803         if (!rdev->wiphy.wowlan)
10804                 return -EOPNOTSUPP;
10805
10806         if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) {
10807                 /* adjust size to have room for all the data */
10808                 size += rdev->wiphy.wowlan_config->tcp->tokens_size +
10809                         rdev->wiphy.wowlan_config->tcp->payload_len +
10810                         rdev->wiphy.wowlan_config->tcp->wake_len +
10811                         rdev->wiphy.wowlan_config->tcp->wake_len / 8;
10812         }
10813
10814         msg = nlmsg_new(size, GFP_KERNEL);
10815         if (!msg)
10816                 return -ENOMEM;
10817
10818         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
10819                              NL80211_CMD_GET_WOWLAN);
10820         if (!hdr)
10821                 goto nla_put_failure;
10822
10823         if (rdev->wiphy.wowlan_config) {
10824                 struct nlattr *nl_wowlan;
10825
10826                 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
10827                 if (!nl_wowlan)
10828                         goto nla_put_failure;
10829
10830                 if ((rdev->wiphy.wowlan_config->any &&
10831                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
10832                     (rdev->wiphy.wowlan_config->disconnect &&
10833                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
10834                     (rdev->wiphy.wowlan_config->magic_pkt &&
10835                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
10836                     (rdev->wiphy.wowlan_config->gtk_rekey_failure &&
10837                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
10838                     (rdev->wiphy.wowlan_config->eap_identity_req &&
10839                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
10840                     (rdev->wiphy.wowlan_config->four_way_handshake &&
10841                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
10842                     (rdev->wiphy.wowlan_config->rfkill_release &&
10843                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
10844                         goto nla_put_failure;
10845
10846                 if (nl80211_send_wowlan_patterns(msg, rdev))
10847                         goto nla_put_failure;
10848
10849                 if (nl80211_send_wowlan_tcp(msg,
10850                                             rdev->wiphy.wowlan_config->tcp))
10851                         goto nla_put_failure;
10852
10853                 if (nl80211_send_wowlan_nd(
10854                             msg,
10855                             rdev->wiphy.wowlan_config->nd_config))
10856                         goto nla_put_failure;
10857
10858                 nla_nest_end(msg, nl_wowlan);
10859         }
10860
10861         genlmsg_end(msg, hdr);
10862         return genlmsg_reply(msg, info);
10863
10864 nla_put_failure:
10865         nlmsg_free(msg);
10866         return -ENOBUFS;
10867 }
10868
10869 static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev,
10870                                     struct nlattr *attr,
10871                                     struct cfg80211_wowlan *trig)
10872 {
10873         struct nlattr *tb[NUM_NL80211_WOWLAN_TCP];
10874         struct cfg80211_wowlan_tcp *cfg;
10875         struct nl80211_wowlan_tcp_data_token *tok = NULL;
10876         struct nl80211_wowlan_tcp_data_seq *seq = NULL;
10877         u32 size;
10878         u32 data_size, wake_size, tokens_size = 0, wake_mask_size;
10879         int err, port;
10880
10881         if (!rdev->wiphy.wowlan->tcp)
10882                 return -EINVAL;
10883
10884         err = nla_parse_nested(tb, MAX_NL80211_WOWLAN_TCP, attr,
10885                                nl80211_wowlan_tcp_policy, NULL);
10886         if (err)
10887                 return err;
10888
10889         if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] ||
10890             !tb[NL80211_WOWLAN_TCP_DST_IPV4] ||
10891             !tb[NL80211_WOWLAN_TCP_DST_MAC] ||
10892             !tb[NL80211_WOWLAN_TCP_DST_PORT] ||
10893             !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] ||
10894             !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] ||
10895             !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] ||
10896             !tb[NL80211_WOWLAN_TCP_WAKE_MASK])
10897                 return -EINVAL;
10898
10899         data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]);
10900         if (data_size > rdev->wiphy.wowlan->tcp->data_payload_max)
10901                 return -EINVAL;
10902
10903         if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) >
10904                         rdev->wiphy.wowlan->tcp->data_interval_max ||
10905             nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0)
10906                 return -EINVAL;
10907
10908         wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]);
10909         if (wake_size > rdev->wiphy.wowlan->tcp->wake_payload_max)
10910                 return -EINVAL;
10911
10912         wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]);
10913         if (wake_mask_size != DIV_ROUND_UP(wake_size, 8))
10914                 return -EINVAL;
10915
10916         if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) {
10917                 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
10918
10919                 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
10920                 tokens_size = tokln - sizeof(*tok);
10921
10922                 if (!tok->len || tokens_size % tok->len)
10923                         return -EINVAL;
10924                 if (!rdev->wiphy.wowlan->tcp->tok)
10925                         return -EINVAL;
10926                 if (tok->len > rdev->wiphy.wowlan->tcp->tok->max_len)
10927                         return -EINVAL;
10928                 if (tok->len < rdev->wiphy.wowlan->tcp->tok->min_len)
10929                         return -EINVAL;
10930                 if (tokens_size > rdev->wiphy.wowlan->tcp->tok->bufsize)
10931                         return -EINVAL;
10932                 if (tok->offset + tok->len > data_size)
10933                         return -EINVAL;
10934         }
10935
10936         if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) {
10937                 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]);
10938                 if (!rdev->wiphy.wowlan->tcp->seq)
10939                         return -EINVAL;
10940                 if (seq->len == 0 || seq->len > 4)
10941                         return -EINVAL;
10942                 if (seq->len + seq->offset > data_size)
10943                         return -EINVAL;
10944         }
10945
10946         size = sizeof(*cfg);
10947         size += data_size;
10948         size += wake_size + wake_mask_size;
10949         size += tokens_size;
10950
10951         cfg = kzalloc(size, GFP_KERNEL);
10952         if (!cfg)
10953                 return -ENOMEM;
10954         cfg->src = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_SRC_IPV4]);
10955         cfg->dst = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_DST_IPV4]);
10956         memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]),
10957                ETH_ALEN);
10958         if (tb[NL80211_WOWLAN_TCP_SRC_PORT])
10959                 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]);
10960         else
10961                 port = 0;
10962 #ifdef CONFIG_INET
10963         /* allocate a socket and port for it and use it */
10964         err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM,
10965                             IPPROTO_TCP, &cfg->sock, 1);
10966         if (err) {
10967                 kfree(cfg);
10968                 return err;
10969         }
10970         if (inet_csk_get_port(cfg->sock->sk, port)) {
10971                 sock_release(cfg->sock);
10972                 kfree(cfg);
10973                 return -EADDRINUSE;
10974         }
10975         cfg->src_port = inet_sk(cfg->sock->sk)->inet_num;
10976 #else
10977         if (!port) {
10978                 kfree(cfg);
10979                 return -EINVAL;
10980         }
10981         cfg->src_port = port;
10982 #endif
10983
10984         cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]);
10985         cfg->payload_len = data_size;
10986         cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size;
10987         memcpy((void *)cfg->payload,
10988                nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]),
10989                data_size);
10990         if (seq)
10991                 cfg->payload_seq = *seq;
10992         cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]);
10993         cfg->wake_len = wake_size;
10994         cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size;
10995         memcpy((void *)cfg->wake_data,
10996                nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]),
10997                wake_size);
10998         cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size +
10999                          data_size + wake_size;
11000         memcpy((void *)cfg->wake_mask,
11001                nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]),
11002                wake_mask_size);
11003         if (tok) {
11004                 cfg->tokens_size = tokens_size;
11005                 memcpy(&cfg->payload_tok, tok, sizeof(*tok) + tokens_size);
11006         }
11007
11008         trig->tcp = cfg;
11009
11010         return 0;
11011 }
11012
11013 static int nl80211_parse_wowlan_nd(struct cfg80211_registered_device *rdev,
11014                                    const struct wiphy_wowlan_support *wowlan,
11015                                    struct nlattr *attr,
11016                                    struct cfg80211_wowlan *trig)
11017 {
11018         struct nlattr **tb;
11019         int err;
11020
11021         tb = kcalloc(NUM_NL80211_ATTR, sizeof(*tb), GFP_KERNEL);
11022         if (!tb)
11023                 return -ENOMEM;
11024
11025         if (!(wowlan->flags & WIPHY_WOWLAN_NET_DETECT)) {
11026                 err = -EOPNOTSUPP;
11027                 goto out;
11028         }
11029
11030         err = nla_parse_nested(tb, NL80211_ATTR_MAX, attr, nl80211_policy,
11031                                NULL);
11032         if (err)
11033                 goto out;
11034
11035         trig->nd_config = nl80211_parse_sched_scan(&rdev->wiphy, NULL, tb,
11036                                                    wowlan->max_nd_match_sets);
11037         err = PTR_ERR_OR_ZERO(trig->nd_config);
11038         if (err)
11039                 trig->nd_config = NULL;
11040
11041 out:
11042         kfree(tb);
11043         return err;
11044 }
11045
11046 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
11047 {
11048         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11049         struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
11050         struct cfg80211_wowlan new_triggers = {};
11051         struct cfg80211_wowlan *ntrig;
11052         const struct wiphy_wowlan_support *wowlan = rdev->wiphy.wowlan;
11053         int err, i;
11054         bool prev_enabled = rdev->wiphy.wowlan_config;
11055         bool regular = false;
11056
11057         if (!wowlan)
11058                 return -EOPNOTSUPP;
11059
11060         if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) {
11061                 cfg80211_rdev_free_wowlan(rdev);
11062                 rdev->wiphy.wowlan_config = NULL;
11063                 goto set_wakeup;
11064         }
11065
11066         err = nla_parse_nested(tb, MAX_NL80211_WOWLAN_TRIG,
11067                                info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS],
11068                                nl80211_wowlan_policy, info->extack);
11069         if (err)
11070                 return err;
11071
11072         if (tb[NL80211_WOWLAN_TRIG_ANY]) {
11073                 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
11074                         return -EINVAL;
11075                 new_triggers.any = true;
11076         }
11077
11078         if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
11079                 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
11080                         return -EINVAL;
11081                 new_triggers.disconnect = true;
11082                 regular = true;
11083         }
11084
11085         if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
11086                 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
11087                         return -EINVAL;
11088                 new_triggers.magic_pkt = true;
11089                 regular = true;
11090         }
11091
11092         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
11093                 return -EINVAL;
11094
11095         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
11096                 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
11097                         return -EINVAL;
11098                 new_triggers.gtk_rekey_failure = true;
11099                 regular = true;
11100         }
11101
11102         if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
11103                 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
11104                         return -EINVAL;
11105                 new_triggers.eap_identity_req = true;
11106                 regular = true;
11107         }
11108
11109         if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
11110                 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
11111                         return -EINVAL;
11112                 new_triggers.four_way_handshake = true;
11113                 regular = true;
11114         }
11115
11116         if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
11117                 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
11118                         return -EINVAL;
11119                 new_triggers.rfkill_release = true;
11120                 regular = true;
11121         }
11122
11123         if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
11124                 struct nlattr *pat;
11125                 int n_patterns = 0;
11126                 int rem, pat_len, mask_len, pkt_offset;
11127                 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
11128
11129                 regular = true;
11130
11131                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
11132                                     rem)
11133                         n_patterns++;
11134                 if (n_patterns > wowlan->n_patterns)
11135                         return -EINVAL;
11136
11137                 new_triggers.patterns = kcalloc(n_patterns,
11138                                                 sizeof(new_triggers.patterns[0]),
11139                                                 GFP_KERNEL);
11140                 if (!new_triggers.patterns)
11141                         return -ENOMEM;
11142
11143                 new_triggers.n_patterns = n_patterns;
11144                 i = 0;
11145
11146                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
11147                                     rem) {
11148                         u8 *mask_pat;
11149
11150                         err = nla_parse_nested(pat_tb, MAX_NL80211_PKTPAT, pat,
11151                                                nl80211_packet_pattern_policy,
11152                                                info->extack);
11153                         if (err)
11154                                 goto error;
11155
11156                         err = -EINVAL;
11157                         if (!pat_tb[NL80211_PKTPAT_MASK] ||
11158                             !pat_tb[NL80211_PKTPAT_PATTERN])
11159                                 goto error;
11160                         pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
11161                         mask_len = DIV_ROUND_UP(pat_len, 8);
11162                         if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
11163                                 goto error;
11164                         if (pat_len > wowlan->pattern_max_len ||
11165                             pat_len < wowlan->pattern_min_len)
11166                                 goto error;
11167
11168                         if (!pat_tb[NL80211_PKTPAT_OFFSET])
11169                                 pkt_offset = 0;
11170                         else
11171                                 pkt_offset = nla_get_u32(
11172                                         pat_tb[NL80211_PKTPAT_OFFSET]);
11173                         if (pkt_offset > wowlan->max_pkt_offset)
11174                                 goto error;
11175                         new_triggers.patterns[i].pkt_offset = pkt_offset;
11176
11177                         mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
11178                         if (!mask_pat) {
11179                                 err = -ENOMEM;
11180                                 goto error;
11181                         }
11182                         new_triggers.patterns[i].mask = mask_pat;
11183                         memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
11184                                mask_len);
11185                         mask_pat += mask_len;
11186                         new_triggers.patterns[i].pattern = mask_pat;
11187                         new_triggers.patterns[i].pattern_len = pat_len;
11188                         memcpy(mask_pat,
11189                                nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
11190                                pat_len);
11191                         i++;
11192                 }
11193         }
11194
11195         if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) {
11196                 regular = true;
11197                 err = nl80211_parse_wowlan_tcp(
11198                         rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION],
11199                         &new_triggers);
11200                 if (err)
11201                         goto error;
11202         }
11203
11204         if (tb[NL80211_WOWLAN_TRIG_NET_DETECT]) {
11205                 regular = true;
11206                 err = nl80211_parse_wowlan_nd(
11207                         rdev, wowlan, tb[NL80211_WOWLAN_TRIG_NET_DETECT],
11208                         &new_triggers);
11209                 if (err)
11210                         goto error;
11211         }
11212
11213         /* The 'any' trigger means the device continues operating more or less
11214          * as in its normal operation mode and wakes up the host on most of the
11215          * normal interrupts (like packet RX, ...)
11216          * It therefore makes little sense to combine with the more constrained
11217          * wakeup trigger modes.
11218          */
11219         if (new_triggers.any && regular) {
11220                 err = -EINVAL;
11221                 goto error;
11222         }
11223
11224         ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL);
11225         if (!ntrig) {
11226                 err = -ENOMEM;
11227                 goto error;
11228         }
11229         cfg80211_rdev_free_wowlan(rdev);
11230         rdev->wiphy.wowlan_config = ntrig;
11231
11232  set_wakeup:
11233         if (rdev->ops->set_wakeup &&
11234             prev_enabled != !!rdev->wiphy.wowlan_config)
11235                 rdev_set_wakeup(rdev, rdev->wiphy.wowlan_config);
11236
11237         return 0;
11238  error:
11239         for (i = 0; i < new_triggers.n_patterns; i++)
11240                 kfree(new_triggers.patterns[i].mask);
11241         kfree(new_triggers.patterns);
11242         if (new_triggers.tcp && new_triggers.tcp->sock)
11243                 sock_release(new_triggers.tcp->sock);
11244         kfree(new_triggers.tcp);
11245         kfree(new_triggers.nd_config);
11246         return err;
11247 }
11248 #endif
11249
11250 static int nl80211_send_coalesce_rules(struct sk_buff *msg,
11251                                        struct cfg80211_registered_device *rdev)
11252 {
11253         struct nlattr *nl_pats, *nl_pat, *nl_rule, *nl_rules;
11254         int i, j, pat_len;
11255         struct cfg80211_coalesce_rules *rule;
11256
11257         if (!rdev->coalesce->n_rules)
11258                 return 0;
11259
11260         nl_rules = nla_nest_start(msg, NL80211_ATTR_COALESCE_RULE);
11261         if (!nl_rules)
11262                 return -ENOBUFS;
11263
11264         for (i = 0; i < rdev->coalesce->n_rules; i++) {
11265                 nl_rule = nla_nest_start(msg, i + 1);
11266                 if (!nl_rule)
11267                         return -ENOBUFS;
11268
11269                 rule = &rdev->coalesce->rules[i];
11270                 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_DELAY,
11271                                 rule->delay))
11272                         return -ENOBUFS;
11273
11274                 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_CONDITION,
11275                                 rule->condition))
11276                         return -ENOBUFS;
11277
11278                 nl_pats = nla_nest_start(msg,
11279                                 NL80211_ATTR_COALESCE_RULE_PKT_PATTERN);
11280                 if (!nl_pats)
11281                         return -ENOBUFS;
11282
11283                 for (j = 0; j < rule->n_patterns; j++) {
11284                         nl_pat = nla_nest_start(msg, j + 1);
11285                         if (!nl_pat)
11286                                 return -ENOBUFS;
11287                         pat_len = rule->patterns[j].pattern_len;
11288                         if (nla_put(msg, NL80211_PKTPAT_MASK,
11289                                     DIV_ROUND_UP(pat_len, 8),
11290                                     rule->patterns[j].mask) ||
11291                             nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
11292                                     rule->patterns[j].pattern) ||
11293                             nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
11294                                         rule->patterns[j].pkt_offset))
11295                                 return -ENOBUFS;
11296                         nla_nest_end(msg, nl_pat);
11297                 }
11298                 nla_nest_end(msg, nl_pats);
11299                 nla_nest_end(msg, nl_rule);
11300         }
11301         nla_nest_end(msg, nl_rules);
11302
11303         return 0;
11304 }
11305
11306 static int nl80211_get_coalesce(struct sk_buff *skb, struct genl_info *info)
11307 {
11308         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11309         struct sk_buff *msg;
11310         void *hdr;
11311
11312         if (!rdev->wiphy.coalesce)
11313                 return -EOPNOTSUPP;
11314
11315         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11316         if (!msg)
11317                 return -ENOMEM;
11318
11319         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
11320                              NL80211_CMD_GET_COALESCE);
11321         if (!hdr)
11322                 goto nla_put_failure;
11323
11324         if (rdev->coalesce && nl80211_send_coalesce_rules(msg, rdev))
11325                 goto nla_put_failure;
11326
11327         genlmsg_end(msg, hdr);
11328         return genlmsg_reply(msg, info);
11329
11330 nla_put_failure:
11331         nlmsg_free(msg);
11332         return -ENOBUFS;
11333 }
11334
11335 void cfg80211_rdev_free_coalesce(struct cfg80211_registered_device *rdev)
11336 {
11337         struct cfg80211_coalesce *coalesce = rdev->coalesce;
11338         int i, j;
11339         struct cfg80211_coalesce_rules *rule;
11340
11341         if (!coalesce)
11342                 return;
11343
11344         for (i = 0; i < coalesce->n_rules; i++) {
11345                 rule = &coalesce->rules[i];
11346                 for (j = 0; j < rule->n_patterns; j++)
11347                         kfree(rule->patterns[j].mask);
11348                 kfree(rule->patterns);
11349         }
11350         kfree(coalesce->rules);
11351         kfree(coalesce);
11352         rdev->coalesce = NULL;
11353 }
11354
11355 static int nl80211_parse_coalesce_rule(struct cfg80211_registered_device *rdev,
11356                                        struct nlattr *rule,
11357                                        struct cfg80211_coalesce_rules *new_rule)
11358 {
11359         int err, i;
11360         const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
11361         struct nlattr *tb[NUM_NL80211_ATTR_COALESCE_RULE], *pat;
11362         int rem, pat_len, mask_len, pkt_offset, n_patterns = 0;
11363         struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
11364
11365         err = nla_parse_nested(tb, NL80211_ATTR_COALESCE_RULE_MAX, rule,
11366                                nl80211_coalesce_policy, NULL);
11367         if (err)
11368                 return err;
11369
11370         if (tb[NL80211_ATTR_COALESCE_RULE_DELAY])
11371                 new_rule->delay =
11372                         nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_DELAY]);
11373         if (new_rule->delay > coalesce->max_delay)
11374                 return -EINVAL;
11375
11376         if (tb[NL80211_ATTR_COALESCE_RULE_CONDITION])
11377                 new_rule->condition =
11378                         nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_CONDITION]);
11379
11380         if (!tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN])
11381                 return -EINVAL;
11382
11383         nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
11384                             rem)
11385                 n_patterns++;
11386         if (n_patterns > coalesce->n_patterns)
11387                 return -EINVAL;
11388
11389         new_rule->patterns = kcalloc(n_patterns, sizeof(new_rule->patterns[0]),
11390                                      GFP_KERNEL);
11391         if (!new_rule->patterns)
11392                 return -ENOMEM;
11393
11394         new_rule->n_patterns = n_patterns;
11395         i = 0;
11396
11397         nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
11398                             rem) {
11399                 u8 *mask_pat;
11400
11401                 err = nla_parse_nested(pat_tb, MAX_NL80211_PKTPAT, pat,
11402                                        nl80211_packet_pattern_policy, NULL);
11403                 if (err)
11404                         return err;
11405
11406                 if (!pat_tb[NL80211_PKTPAT_MASK] ||
11407                     !pat_tb[NL80211_PKTPAT_PATTERN])
11408                         return -EINVAL;
11409                 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
11410                 mask_len = DIV_ROUND_UP(pat_len, 8);
11411                 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
11412                         return -EINVAL;
11413                 if (pat_len > coalesce->pattern_max_len ||
11414                     pat_len < coalesce->pattern_min_len)
11415                         return -EINVAL;
11416
11417                 if (!pat_tb[NL80211_PKTPAT_OFFSET])
11418                         pkt_offset = 0;
11419                 else
11420                         pkt_offset = nla_get_u32(pat_tb[NL80211_PKTPAT_OFFSET]);
11421                 if (pkt_offset > coalesce->max_pkt_offset)
11422                         return -EINVAL;
11423                 new_rule->patterns[i].pkt_offset = pkt_offset;
11424
11425                 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
11426                 if (!mask_pat)
11427                         return -ENOMEM;
11428
11429                 new_rule->patterns[i].mask = mask_pat;
11430                 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
11431                        mask_len);
11432
11433                 mask_pat += mask_len;
11434                 new_rule->patterns[i].pattern = mask_pat;
11435                 new_rule->patterns[i].pattern_len = pat_len;
11436                 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
11437                        pat_len);
11438                 i++;
11439         }
11440
11441         return 0;
11442 }
11443
11444 static int nl80211_set_coalesce(struct sk_buff *skb, struct genl_info *info)
11445 {
11446         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11447         const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
11448         struct cfg80211_coalesce new_coalesce = {};
11449         struct cfg80211_coalesce *n_coalesce;
11450         int err, rem_rule, n_rules = 0, i, j;
11451         struct nlattr *rule;
11452         struct cfg80211_coalesce_rules *tmp_rule;
11453
11454         if (!rdev->wiphy.coalesce || !rdev->ops->set_coalesce)
11455                 return -EOPNOTSUPP;
11456
11457         if (!info->attrs[NL80211_ATTR_COALESCE_RULE]) {
11458                 cfg80211_rdev_free_coalesce(rdev);
11459                 rdev_set_coalesce(rdev, NULL);
11460                 return 0;
11461         }
11462
11463         nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
11464                             rem_rule)
11465                 n_rules++;
11466         if (n_rules > coalesce->n_rules)
11467                 return -EINVAL;
11468
11469         new_coalesce.rules = kcalloc(n_rules, sizeof(new_coalesce.rules[0]),
11470                                      GFP_KERNEL);
11471         if (!new_coalesce.rules)
11472                 return -ENOMEM;
11473
11474         new_coalesce.n_rules = n_rules;
11475         i = 0;
11476
11477         nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
11478                             rem_rule) {
11479                 err = nl80211_parse_coalesce_rule(rdev, rule,
11480                                                   &new_coalesce.rules[i]);
11481                 if (err)
11482                         goto error;
11483
11484                 i++;
11485         }
11486
11487         err = rdev_set_coalesce(rdev, &new_coalesce);
11488         if (err)
11489                 goto error;
11490
11491         n_coalesce = kmemdup(&new_coalesce, sizeof(new_coalesce), GFP_KERNEL);
11492         if (!n_coalesce) {
11493                 err = -ENOMEM;
11494                 goto error;
11495         }
11496         cfg80211_rdev_free_coalesce(rdev);
11497         rdev->coalesce = n_coalesce;
11498
11499         return 0;
11500 error:
11501         for (i = 0; i < new_coalesce.n_rules; i++) {
11502                 tmp_rule = &new_coalesce.rules[i];
11503                 for (j = 0; j < tmp_rule->n_patterns; j++)
11504                         kfree(tmp_rule->patterns[j].mask);
11505                 kfree(tmp_rule->patterns);
11506         }
11507         kfree(new_coalesce.rules);
11508
11509         return err;
11510 }
11511
11512 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
11513 {
11514         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11515         struct net_device *dev = info->user_ptr[1];
11516         struct wireless_dev *wdev = dev->ieee80211_ptr;
11517         struct nlattr *tb[NUM_NL80211_REKEY_DATA];
11518         struct cfg80211_gtk_rekey_data rekey_data;
11519         int err;
11520
11521         if (!info->attrs[NL80211_ATTR_REKEY_DATA])
11522                 return -EINVAL;
11523
11524         err = nla_parse_nested(tb, MAX_NL80211_REKEY_DATA,
11525                                info->attrs[NL80211_ATTR_REKEY_DATA],
11526                                nl80211_rekey_policy, info->extack);
11527         if (err)
11528                 return err;
11529
11530         if (!tb[NL80211_REKEY_DATA_REPLAY_CTR] || !tb[NL80211_REKEY_DATA_KEK] ||
11531             !tb[NL80211_REKEY_DATA_KCK])
11532                 return -EINVAL;
11533         if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN)
11534                 return -ERANGE;
11535         if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN)
11536                 return -ERANGE;
11537         if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN)
11538                 return -ERANGE;
11539
11540         rekey_data.kek = nla_data(tb[NL80211_REKEY_DATA_KEK]);
11541         rekey_data.kck = nla_data(tb[NL80211_REKEY_DATA_KCK]);
11542         rekey_data.replay_ctr = nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]);
11543
11544         wdev_lock(wdev);
11545         if (!wdev->current_bss) {
11546                 err = -ENOTCONN;
11547                 goto out;
11548         }
11549
11550         if (!rdev->ops->set_rekey_data) {
11551                 err = -EOPNOTSUPP;
11552                 goto out;
11553         }
11554
11555         err = rdev_set_rekey_data(rdev, dev, &rekey_data);
11556  out:
11557         wdev_unlock(wdev);
11558         return err;
11559 }
11560
11561 static int nl80211_register_unexpected_frame(struct sk_buff *skb,
11562                                              struct genl_info *info)
11563 {
11564         struct net_device *dev = info->user_ptr[1];
11565         struct wireless_dev *wdev = dev->ieee80211_ptr;
11566
11567         if (wdev->iftype != NL80211_IFTYPE_AP &&
11568             wdev->iftype != NL80211_IFTYPE_P2P_GO)
11569                 return -EINVAL;
11570
11571         if (wdev->ap_unexpected_nlportid)
11572                 return -EBUSY;
11573
11574         wdev->ap_unexpected_nlportid = info->snd_portid;
11575         return 0;
11576 }
11577
11578 static int nl80211_probe_client(struct sk_buff *skb,
11579                                 struct genl_info *info)
11580 {
11581         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11582         struct net_device *dev = info->user_ptr[1];
11583         struct wireless_dev *wdev = dev->ieee80211_ptr;
11584         struct sk_buff *msg;
11585         void *hdr;
11586         const u8 *addr;
11587         u64 cookie;
11588         int err;
11589
11590         if (wdev->iftype != NL80211_IFTYPE_AP &&
11591             wdev->iftype != NL80211_IFTYPE_P2P_GO)
11592                 return -EOPNOTSUPP;
11593
11594         if (!info->attrs[NL80211_ATTR_MAC])
11595                 return -EINVAL;
11596
11597         if (!rdev->ops->probe_client)
11598                 return -EOPNOTSUPP;
11599
11600         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11601         if (!msg)
11602                 return -ENOMEM;
11603
11604         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
11605                              NL80211_CMD_PROBE_CLIENT);
11606         if (!hdr) {
11607                 err = -ENOBUFS;
11608                 goto free_msg;
11609         }
11610
11611         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
11612
11613         err = rdev_probe_client(rdev, dev, addr, &cookie);
11614         if (err)
11615                 goto free_msg;
11616
11617         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
11618                               NL80211_ATTR_PAD))
11619                 goto nla_put_failure;
11620
11621         genlmsg_end(msg, hdr);
11622
11623         return genlmsg_reply(msg, info);
11624
11625  nla_put_failure:
11626         err = -ENOBUFS;
11627  free_msg:
11628         nlmsg_free(msg);
11629         return err;
11630 }
11631
11632 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
11633 {
11634         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11635         struct cfg80211_beacon_registration *reg, *nreg;
11636         int rv;
11637
11638         if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS))
11639                 return -EOPNOTSUPP;
11640
11641         nreg = kzalloc(sizeof(*nreg), GFP_KERNEL);
11642         if (!nreg)
11643                 return -ENOMEM;
11644
11645         /* First, check if already registered. */
11646         spin_lock_bh(&rdev->beacon_registrations_lock);
11647         list_for_each_entry(reg, &rdev->beacon_registrations, list) {
11648                 if (reg->nlportid == info->snd_portid) {
11649                         rv = -EALREADY;
11650                         goto out_err;
11651                 }
11652         }
11653         /* Add it to the list */
11654         nreg->nlportid = info->snd_portid;
11655         list_add(&nreg->list, &rdev->beacon_registrations);
11656
11657         spin_unlock_bh(&rdev->beacon_registrations_lock);
11658
11659         return 0;
11660 out_err:
11661         spin_unlock_bh(&rdev->beacon_registrations_lock);
11662         kfree(nreg);
11663         return rv;
11664 }
11665
11666 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info)
11667 {
11668         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11669         struct wireless_dev *wdev = info->user_ptr[1];
11670         int err;
11671
11672         if (!rdev->ops->start_p2p_device)
11673                 return -EOPNOTSUPP;
11674
11675         if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
11676                 return -EOPNOTSUPP;
11677
11678         if (wdev_running(wdev))
11679                 return 0;
11680
11681         if (rfkill_blocked(rdev->rfkill))
11682                 return -ERFKILL;
11683
11684         err = rdev_start_p2p_device(rdev, wdev);
11685         if (err)
11686                 return err;
11687
11688         wdev->is_running = true;
11689         rdev->opencount++;
11690
11691         return 0;
11692 }
11693
11694 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info)
11695 {
11696         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11697         struct wireless_dev *wdev = info->user_ptr[1];
11698
11699         if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
11700                 return -EOPNOTSUPP;
11701
11702         if (!rdev->ops->stop_p2p_device)
11703                 return -EOPNOTSUPP;
11704
11705         cfg80211_stop_p2p_device(rdev, wdev);
11706
11707         return 0;
11708 }
11709
11710 static int nl80211_start_nan(struct sk_buff *skb, struct genl_info *info)
11711 {
11712         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11713         struct wireless_dev *wdev = info->user_ptr[1];
11714         struct cfg80211_nan_conf conf = {};
11715         int err;
11716
11717         if (wdev->iftype != NL80211_IFTYPE_NAN)
11718                 return -EOPNOTSUPP;
11719
11720         if (wdev_running(wdev))
11721                 return -EEXIST;
11722
11723         if (rfkill_blocked(rdev->rfkill))
11724                 return -ERFKILL;
11725
11726         if (!info->attrs[NL80211_ATTR_NAN_MASTER_PREF])
11727                 return -EINVAL;
11728
11729         conf.master_pref =
11730                 nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]);
11731
11732         if (info->attrs[NL80211_ATTR_BANDS]) {
11733                 u32 bands = nla_get_u32(info->attrs[NL80211_ATTR_BANDS]);
11734
11735                 if (bands & ~(u32)wdev->wiphy->nan_supported_bands)
11736                         return -EOPNOTSUPP;
11737
11738                 if (bands && !(bands & BIT(NL80211_BAND_2GHZ)))
11739                         return -EINVAL;
11740
11741                 conf.bands = bands;
11742         }
11743
11744         err = rdev_start_nan(rdev, wdev, &conf);
11745         if (err)
11746                 return err;
11747
11748         wdev->is_running = true;
11749         rdev->opencount++;
11750
11751         return 0;
11752 }
11753
11754 static int nl80211_stop_nan(struct sk_buff *skb, struct genl_info *info)
11755 {
11756         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11757         struct wireless_dev *wdev = info->user_ptr[1];
11758
11759         if (wdev->iftype != NL80211_IFTYPE_NAN)
11760                 return -EOPNOTSUPP;
11761
11762         cfg80211_stop_nan(rdev, wdev);
11763
11764         return 0;
11765 }
11766
11767 static int validate_nan_filter(struct nlattr *filter_attr)
11768 {
11769         struct nlattr *attr;
11770         int len = 0, n_entries = 0, rem;
11771
11772         nla_for_each_nested(attr, filter_attr, rem) {
11773                 len += nla_len(attr);
11774                 n_entries++;
11775         }
11776
11777         if (len >= U8_MAX)
11778                 return -EINVAL;
11779
11780         return n_entries;
11781 }
11782
11783 static int handle_nan_filter(struct nlattr *attr_filter,
11784                              struct cfg80211_nan_func *func,
11785                              bool tx)
11786 {
11787         struct nlattr *attr;
11788         int n_entries, rem, i;
11789         struct cfg80211_nan_func_filter *filter;
11790
11791         n_entries = validate_nan_filter(attr_filter);
11792         if (n_entries < 0)
11793                 return n_entries;
11794
11795         BUILD_BUG_ON(sizeof(*func->rx_filters) != sizeof(*func->tx_filters));
11796
11797         filter = kcalloc(n_entries, sizeof(*func->rx_filters), GFP_KERNEL);
11798         if (!filter)
11799                 return -ENOMEM;
11800
11801         i = 0;
11802         nla_for_each_nested(attr, attr_filter, rem) {
11803                 filter[i].filter = nla_memdup(attr, GFP_KERNEL);
11804                 filter[i].len = nla_len(attr);
11805                 i++;
11806         }
11807         if (tx) {
11808                 func->num_tx_filters = n_entries;
11809                 func->tx_filters = filter;
11810         } else {
11811                 func->num_rx_filters = n_entries;
11812                 func->rx_filters = filter;
11813         }
11814
11815         return 0;
11816 }
11817
11818 static int nl80211_nan_add_func(struct sk_buff *skb,
11819                                 struct genl_info *info)
11820 {
11821         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11822         struct wireless_dev *wdev = info->user_ptr[1];
11823         struct nlattr *tb[NUM_NL80211_NAN_FUNC_ATTR], *func_attr;
11824         struct cfg80211_nan_func *func;
11825         struct sk_buff *msg = NULL;
11826         void *hdr = NULL;
11827         int err = 0;
11828
11829         if (wdev->iftype != NL80211_IFTYPE_NAN)
11830                 return -EOPNOTSUPP;
11831
11832         if (!wdev_running(wdev))
11833                 return -ENOTCONN;
11834
11835         if (!info->attrs[NL80211_ATTR_NAN_FUNC])
11836                 return -EINVAL;
11837
11838         err = nla_parse_nested(tb, NL80211_NAN_FUNC_ATTR_MAX,
11839                                info->attrs[NL80211_ATTR_NAN_FUNC],
11840                                nl80211_nan_func_policy, info->extack);
11841         if (err)
11842                 return err;
11843
11844         func = kzalloc(sizeof(*func), GFP_KERNEL);
11845         if (!func)
11846                 return -ENOMEM;
11847
11848         func->cookie = cfg80211_assign_cookie(rdev);
11849
11850         if (!tb[NL80211_NAN_FUNC_TYPE] ||
11851             nla_get_u8(tb[NL80211_NAN_FUNC_TYPE]) > NL80211_NAN_FUNC_MAX_TYPE) {
11852                 err = -EINVAL;
11853                 goto out;
11854         }
11855
11856
11857         func->type = nla_get_u8(tb[NL80211_NAN_FUNC_TYPE]);
11858
11859         if (!tb[NL80211_NAN_FUNC_SERVICE_ID]) {
11860                 err = -EINVAL;
11861                 goto out;
11862         }
11863
11864         memcpy(func->service_id, nla_data(tb[NL80211_NAN_FUNC_SERVICE_ID]),
11865                sizeof(func->service_id));
11866
11867         func->close_range =
11868                 nla_get_flag(tb[NL80211_NAN_FUNC_CLOSE_RANGE]);
11869
11870         if (tb[NL80211_NAN_FUNC_SERVICE_INFO]) {
11871                 func->serv_spec_info_len =
11872                         nla_len(tb[NL80211_NAN_FUNC_SERVICE_INFO]);
11873                 func->serv_spec_info =
11874                         kmemdup(nla_data(tb[NL80211_NAN_FUNC_SERVICE_INFO]),
11875                                 func->serv_spec_info_len,
11876                                 GFP_KERNEL);
11877                 if (!func->serv_spec_info) {
11878                         err = -ENOMEM;
11879                         goto out;
11880                 }
11881         }
11882
11883         if (tb[NL80211_NAN_FUNC_TTL])
11884                 func->ttl = nla_get_u32(tb[NL80211_NAN_FUNC_TTL]);
11885
11886         switch (func->type) {
11887         case NL80211_NAN_FUNC_PUBLISH:
11888                 if (!tb[NL80211_NAN_FUNC_PUBLISH_TYPE]) {
11889                         err = -EINVAL;
11890                         goto out;
11891                 }
11892
11893                 func->publish_type =
11894                         nla_get_u8(tb[NL80211_NAN_FUNC_PUBLISH_TYPE]);
11895                 func->publish_bcast =
11896                         nla_get_flag(tb[NL80211_NAN_FUNC_PUBLISH_BCAST]);
11897
11898                 if ((!(func->publish_type & NL80211_NAN_SOLICITED_PUBLISH)) &&
11899                         func->publish_bcast) {
11900                         err = -EINVAL;
11901                         goto out;
11902                 }
11903                 break;
11904         case NL80211_NAN_FUNC_SUBSCRIBE:
11905                 func->subscribe_active =
11906                         nla_get_flag(tb[NL80211_NAN_FUNC_SUBSCRIBE_ACTIVE]);
11907                 break;
11908         case NL80211_NAN_FUNC_FOLLOW_UP:
11909                 if (!tb[NL80211_NAN_FUNC_FOLLOW_UP_ID] ||
11910                     !tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID] ||
11911                     !tb[NL80211_NAN_FUNC_FOLLOW_UP_DEST]) {
11912                         err = -EINVAL;
11913                         goto out;
11914                 }
11915
11916                 func->followup_id =
11917                         nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_ID]);
11918                 func->followup_reqid =
11919                         nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID]);
11920                 memcpy(func->followup_dest.addr,
11921                        nla_data(tb[NL80211_NAN_FUNC_FOLLOW_UP_DEST]),
11922                        sizeof(func->followup_dest.addr));
11923                 if (func->ttl) {
11924                         err = -EINVAL;
11925                         goto out;
11926                 }
11927                 break;
11928         default:
11929                 err = -EINVAL;
11930                 goto out;
11931         }
11932
11933         if (tb[NL80211_NAN_FUNC_SRF]) {
11934                 struct nlattr *srf_tb[NUM_NL80211_NAN_SRF_ATTR];
11935
11936                 err = nla_parse_nested(srf_tb, NL80211_NAN_SRF_ATTR_MAX,
11937                                        tb[NL80211_NAN_FUNC_SRF],
11938                                        nl80211_nan_srf_policy, info->extack);
11939                 if (err)
11940                         goto out;
11941
11942                 func->srf_include =
11943                         nla_get_flag(srf_tb[NL80211_NAN_SRF_INCLUDE]);
11944
11945                 if (srf_tb[NL80211_NAN_SRF_BF]) {
11946                         if (srf_tb[NL80211_NAN_SRF_MAC_ADDRS] ||
11947                             !srf_tb[NL80211_NAN_SRF_BF_IDX]) {
11948                                 err = -EINVAL;
11949                                 goto out;
11950                         }
11951
11952                         func->srf_bf_len =
11953                                 nla_len(srf_tb[NL80211_NAN_SRF_BF]);
11954                         func->srf_bf =
11955                                 kmemdup(nla_data(srf_tb[NL80211_NAN_SRF_BF]),
11956                                         func->srf_bf_len, GFP_KERNEL);
11957                         if (!func->srf_bf) {
11958                                 err = -ENOMEM;
11959                                 goto out;
11960                         }
11961
11962                         func->srf_bf_idx =
11963                                 nla_get_u8(srf_tb[NL80211_NAN_SRF_BF_IDX]);
11964                 } else {
11965                         struct nlattr *attr, *mac_attr =
11966                                 srf_tb[NL80211_NAN_SRF_MAC_ADDRS];
11967                         int n_entries, rem, i = 0;
11968
11969                         if (!mac_attr) {
11970                                 err = -EINVAL;
11971                                 goto out;
11972                         }
11973
11974                         n_entries = validate_acl_mac_addrs(mac_attr);
11975                         if (n_entries <= 0) {
11976                                 err = -EINVAL;
11977                                 goto out;
11978                         }
11979
11980                         func->srf_num_macs = n_entries;
11981                         func->srf_macs =
11982                                 kcalloc(n_entries, sizeof(*func->srf_macs),
11983                                         GFP_KERNEL);
11984                         if (!func->srf_macs) {
11985                                 err = -ENOMEM;
11986                                 goto out;
11987                         }
11988
11989                         nla_for_each_nested(attr, mac_attr, rem)
11990                                 memcpy(func->srf_macs[i++].addr, nla_data(attr),
11991                                        sizeof(*func->srf_macs));
11992                 }
11993         }
11994
11995         if (tb[NL80211_NAN_FUNC_TX_MATCH_FILTER]) {
11996                 err = handle_nan_filter(tb[NL80211_NAN_FUNC_TX_MATCH_FILTER],
11997                                         func, true);
11998                 if (err)
11999                         goto out;
12000         }
12001
12002         if (tb[NL80211_NAN_FUNC_RX_MATCH_FILTER]) {
12003                 err = handle_nan_filter(tb[NL80211_NAN_FUNC_RX_MATCH_FILTER],
12004                                         func, false);
12005                 if (err)
12006                         goto out;
12007         }
12008
12009         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12010         if (!msg) {
12011                 err = -ENOMEM;
12012                 goto out;
12013         }
12014
12015         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
12016                              NL80211_CMD_ADD_NAN_FUNCTION);
12017         /* This can't really happen - we just allocated 4KB */
12018         if (WARN_ON(!hdr)) {
12019                 err = -ENOMEM;
12020                 goto out;
12021         }
12022
12023         err = rdev_add_nan_func(rdev, wdev, func);
12024 out:
12025         if (err < 0) {
12026                 cfg80211_free_nan_func(func);
12027                 nlmsg_free(msg);
12028                 return err;
12029         }
12030
12031         /* propagate the instance id and cookie to userspace  */
12032         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, func->cookie,
12033                               NL80211_ATTR_PAD))
12034                 goto nla_put_failure;
12035
12036         func_attr = nla_nest_start(msg, NL80211_ATTR_NAN_FUNC);
12037         if (!func_attr)
12038                 goto nla_put_failure;
12039
12040         if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID,
12041                        func->instance_id))
12042                 goto nla_put_failure;
12043
12044         nla_nest_end(msg, func_attr);
12045
12046         genlmsg_end(msg, hdr);
12047         return genlmsg_reply(msg, info);
12048
12049 nla_put_failure:
12050         nlmsg_free(msg);
12051         return -ENOBUFS;
12052 }
12053
12054 static int nl80211_nan_del_func(struct sk_buff *skb,
12055                                struct genl_info *info)
12056 {
12057         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12058         struct wireless_dev *wdev = info->user_ptr[1];
12059         u64 cookie;
12060
12061         if (wdev->iftype != NL80211_IFTYPE_NAN)
12062                 return -EOPNOTSUPP;
12063
12064         if (!wdev_running(wdev))
12065                 return -ENOTCONN;
12066
12067         if (!info->attrs[NL80211_ATTR_COOKIE])
12068                 return -EINVAL;
12069
12070         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
12071
12072         rdev_del_nan_func(rdev, wdev, cookie);
12073
12074         return 0;
12075 }
12076
12077 static int nl80211_nan_change_config(struct sk_buff *skb,
12078                                      struct genl_info *info)
12079 {
12080         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12081         struct wireless_dev *wdev = info->user_ptr[1];
12082         struct cfg80211_nan_conf conf = {};
12083         u32 changed = 0;
12084
12085         if (wdev->iftype != NL80211_IFTYPE_NAN)
12086                 return -EOPNOTSUPP;
12087
12088         if (!wdev_running(wdev))
12089                 return -ENOTCONN;
12090
12091         if (info->attrs[NL80211_ATTR_NAN_MASTER_PREF]) {
12092                 conf.master_pref =
12093                         nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]);
12094                 if (conf.master_pref <= 1 || conf.master_pref == 255)
12095                         return -EINVAL;
12096
12097                 changed |= CFG80211_NAN_CONF_CHANGED_PREF;
12098         }
12099
12100         if (info->attrs[NL80211_ATTR_BANDS]) {
12101                 u32 bands = nla_get_u32(info->attrs[NL80211_ATTR_BANDS]);
12102
12103                 if (bands & ~(u32)wdev->wiphy->nan_supported_bands)
12104                         return -EOPNOTSUPP;
12105
12106                 if (bands && !(bands & BIT(NL80211_BAND_2GHZ)))
12107                         return -EINVAL;
12108
12109                 conf.bands = bands;
12110                 changed |= CFG80211_NAN_CONF_CHANGED_BANDS;
12111         }
12112
12113         if (!changed)
12114                 return -EINVAL;
12115
12116         return rdev_nan_change_conf(rdev, wdev, &conf, changed);
12117 }
12118
12119 void cfg80211_nan_match(struct wireless_dev *wdev,
12120                         struct cfg80211_nan_match_params *match, gfp_t gfp)
12121 {
12122         struct wiphy *wiphy = wdev->wiphy;
12123         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12124         struct nlattr *match_attr, *local_func_attr, *peer_func_attr;
12125         struct sk_buff *msg;
12126         void *hdr;
12127
12128         if (WARN_ON(!match->inst_id || !match->peer_inst_id || !match->addr))
12129                 return;
12130
12131         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12132         if (!msg)
12133                 return;
12134
12135         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NAN_MATCH);
12136         if (!hdr) {
12137                 nlmsg_free(msg);
12138                 return;
12139         }
12140
12141         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12142             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
12143                                          wdev->netdev->ifindex)) ||
12144             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
12145                               NL80211_ATTR_PAD))
12146                 goto nla_put_failure;
12147
12148         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, match->cookie,
12149                               NL80211_ATTR_PAD) ||
12150             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, match->addr))
12151                 goto nla_put_failure;
12152
12153         match_attr = nla_nest_start(msg, NL80211_ATTR_NAN_MATCH);
12154         if (!match_attr)
12155                 goto nla_put_failure;
12156
12157         local_func_attr = nla_nest_start(msg, NL80211_NAN_MATCH_FUNC_LOCAL);
12158         if (!local_func_attr)
12159                 goto nla_put_failure;
12160
12161         if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->inst_id))
12162                 goto nla_put_failure;
12163
12164         nla_nest_end(msg, local_func_attr);
12165
12166         peer_func_attr = nla_nest_start(msg, NL80211_NAN_MATCH_FUNC_PEER);
12167         if (!peer_func_attr)
12168                 goto nla_put_failure;
12169
12170         if (nla_put_u8(msg, NL80211_NAN_FUNC_TYPE, match->type) ||
12171             nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->peer_inst_id))
12172                 goto nla_put_failure;
12173
12174         if (match->info && match->info_len &&
12175             nla_put(msg, NL80211_NAN_FUNC_SERVICE_INFO, match->info_len,
12176                     match->info))
12177                 goto nla_put_failure;
12178
12179         nla_nest_end(msg, peer_func_attr);
12180         nla_nest_end(msg, match_attr);
12181         genlmsg_end(msg, hdr);
12182
12183         if (!wdev->owner_nlportid)
12184                 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
12185                                         msg, 0, NL80211_MCGRP_NAN, gfp);
12186         else
12187                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
12188                                 wdev->owner_nlportid);
12189
12190         return;
12191
12192 nla_put_failure:
12193         nlmsg_free(msg);
12194 }
12195 EXPORT_SYMBOL(cfg80211_nan_match);
12196
12197 void cfg80211_nan_func_terminated(struct wireless_dev *wdev,
12198                                   u8 inst_id,
12199                                   enum nl80211_nan_func_term_reason reason,
12200                                   u64 cookie, gfp_t gfp)
12201 {
12202         struct wiphy *wiphy = wdev->wiphy;
12203         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12204         struct sk_buff *msg;
12205         struct nlattr *func_attr;
12206         void *hdr;
12207
12208         if (WARN_ON(!inst_id))
12209                 return;
12210
12211         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12212         if (!msg)
12213                 return;
12214
12215         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_NAN_FUNCTION);
12216         if (!hdr) {
12217                 nlmsg_free(msg);
12218                 return;
12219         }
12220
12221         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12222             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
12223                                          wdev->netdev->ifindex)) ||
12224             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
12225                               NL80211_ATTR_PAD))
12226                 goto nla_put_failure;
12227
12228         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
12229                               NL80211_ATTR_PAD))
12230                 goto nla_put_failure;
12231
12232         func_attr = nla_nest_start(msg, NL80211_ATTR_NAN_FUNC);
12233         if (!func_attr)
12234                 goto nla_put_failure;
12235
12236         if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, inst_id) ||
12237             nla_put_u8(msg, NL80211_NAN_FUNC_TERM_REASON, reason))
12238                 goto nla_put_failure;
12239
12240         nla_nest_end(msg, func_attr);
12241         genlmsg_end(msg, hdr);
12242
12243         if (!wdev->owner_nlportid)
12244                 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
12245                                         msg, 0, NL80211_MCGRP_NAN, gfp);
12246         else
12247                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
12248                                 wdev->owner_nlportid);
12249
12250         return;
12251
12252 nla_put_failure:
12253         nlmsg_free(msg);
12254 }
12255 EXPORT_SYMBOL(cfg80211_nan_func_terminated);
12256
12257 static int nl80211_get_protocol_features(struct sk_buff *skb,
12258                                          struct genl_info *info)
12259 {
12260         void *hdr;
12261         struct sk_buff *msg;
12262
12263         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12264         if (!msg)
12265                 return -ENOMEM;
12266
12267         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
12268                              NL80211_CMD_GET_PROTOCOL_FEATURES);
12269         if (!hdr)
12270                 goto nla_put_failure;
12271
12272         if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES,
12273                         NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP))
12274                 goto nla_put_failure;
12275
12276         genlmsg_end(msg, hdr);
12277         return genlmsg_reply(msg, info);
12278
12279  nla_put_failure:
12280         kfree_skb(msg);
12281         return -ENOBUFS;
12282 }
12283
12284 static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info)
12285 {
12286         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12287         struct cfg80211_update_ft_ies_params ft_params;
12288         struct net_device *dev = info->user_ptr[1];
12289
12290         if (!rdev->ops->update_ft_ies)
12291                 return -EOPNOTSUPP;
12292
12293         if (!info->attrs[NL80211_ATTR_MDID] ||
12294             !info->attrs[NL80211_ATTR_IE])
12295                 return -EINVAL;
12296
12297         memset(&ft_params, 0, sizeof(ft_params));
12298         ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]);
12299         ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
12300         ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
12301
12302         return rdev_update_ft_ies(rdev, dev, &ft_params);
12303 }
12304
12305 static int nl80211_crit_protocol_start(struct sk_buff *skb,
12306                                        struct genl_info *info)
12307 {
12308         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12309         struct wireless_dev *wdev = info->user_ptr[1];
12310         enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC;
12311         u16 duration;
12312         int ret;
12313
12314         if (!rdev->ops->crit_proto_start)
12315                 return -EOPNOTSUPP;
12316
12317         if (WARN_ON(!rdev->ops->crit_proto_stop))
12318                 return -EINVAL;
12319
12320         if (rdev->crit_proto_nlportid)
12321                 return -EBUSY;
12322
12323         /* determine protocol if provided */
12324         if (info->attrs[NL80211_ATTR_CRIT_PROT_ID])
12325                 proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]);
12326
12327         if (proto >= NUM_NL80211_CRIT_PROTO)
12328                 return -EINVAL;
12329
12330         /* timeout must be provided */
12331         if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION])
12332                 return -EINVAL;
12333
12334         duration =
12335                 nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]);
12336
12337         if (duration > NL80211_CRIT_PROTO_MAX_DURATION)
12338                 return -ERANGE;
12339
12340         ret = rdev_crit_proto_start(rdev, wdev, proto, duration);
12341         if (!ret)
12342                 rdev->crit_proto_nlportid = info->snd_portid;
12343
12344         return ret;
12345 }
12346
12347 static int nl80211_crit_protocol_stop(struct sk_buff *skb,
12348                                       struct genl_info *info)
12349 {
12350         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12351         struct wireless_dev *wdev = info->user_ptr[1];
12352
12353         if (!rdev->ops->crit_proto_stop)
12354                 return -EOPNOTSUPP;
12355
12356         if (rdev->crit_proto_nlportid) {
12357                 rdev->crit_proto_nlportid = 0;
12358                 rdev_crit_proto_stop(rdev, wdev);
12359         }
12360         return 0;
12361 }
12362
12363 static int nl80211_vendor_cmd(struct sk_buff *skb, struct genl_info *info)
12364 {
12365         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12366         struct wireless_dev *wdev =
12367                 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
12368         int i, err;
12369         u32 vid, subcmd;
12370
12371         if (!rdev->wiphy.vendor_commands)
12372                 return -EOPNOTSUPP;
12373
12374         if (IS_ERR(wdev)) {
12375                 err = PTR_ERR(wdev);
12376                 if (err != -EINVAL)
12377                         return err;
12378                 wdev = NULL;
12379         } else if (wdev->wiphy != &rdev->wiphy) {
12380                 return -EINVAL;
12381         }
12382
12383         if (!info->attrs[NL80211_ATTR_VENDOR_ID] ||
12384             !info->attrs[NL80211_ATTR_VENDOR_SUBCMD])
12385                 return -EINVAL;
12386
12387         vid = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_ID]);
12388         subcmd = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_SUBCMD]);
12389         for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
12390                 const struct wiphy_vendor_command *vcmd;
12391                 void *data = NULL;
12392                 int len = 0;
12393
12394                 vcmd = &rdev->wiphy.vendor_commands[i];
12395
12396                 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
12397                         continue;
12398
12399                 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
12400                                    WIPHY_VENDOR_CMD_NEED_NETDEV)) {
12401                         if (!wdev)
12402                                 return -EINVAL;
12403                         if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
12404                             !wdev->netdev)
12405                                 return -EINVAL;
12406
12407                         if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
12408                                 if (!wdev_running(wdev))
12409                                         return -ENETDOWN;
12410                         }
12411
12412                         if (!vcmd->doit)
12413                                 return -EOPNOTSUPP;
12414                 } else {
12415                         wdev = NULL;
12416                 }
12417
12418                 if (info->attrs[NL80211_ATTR_VENDOR_DATA]) {
12419                         data = nla_data(info->attrs[NL80211_ATTR_VENDOR_DATA]);
12420                         len = nla_len(info->attrs[NL80211_ATTR_VENDOR_DATA]);
12421                 }
12422
12423                 rdev->cur_cmd_info = info;
12424                 err = rdev->wiphy.vendor_commands[i].doit(&rdev->wiphy, wdev,
12425                                                           data, len);
12426                 rdev->cur_cmd_info = NULL;
12427                 return err;
12428         }
12429
12430         return -EOPNOTSUPP;
12431 }
12432
12433 static int nl80211_prepare_vendor_dump(struct sk_buff *skb,
12434                                        struct netlink_callback *cb,
12435                                        struct cfg80211_registered_device **rdev,
12436                                        struct wireless_dev **wdev)
12437 {
12438         struct nlattr **attrbuf = genl_family_attrbuf(&nl80211_fam);
12439         u32 vid, subcmd;
12440         unsigned int i;
12441         int vcmd_idx = -1;
12442         int err;
12443         void *data = NULL;
12444         unsigned int data_len = 0;
12445
12446         if (cb->args[0]) {
12447                 /* subtract the 1 again here */
12448                 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
12449                 struct wireless_dev *tmp;
12450
12451                 if (!wiphy)
12452                         return -ENODEV;
12453                 *rdev = wiphy_to_rdev(wiphy);
12454                 *wdev = NULL;
12455
12456                 if (cb->args[1]) {
12457                         list_for_each_entry(tmp, &wiphy->wdev_list, list) {
12458                                 if (tmp->identifier == cb->args[1] - 1) {
12459                                         *wdev = tmp;
12460                                         break;
12461                                 }
12462                         }
12463                 }
12464
12465                 /* keep rtnl locked in successful case */
12466                 return 0;
12467         }
12468
12469         err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize, attrbuf,
12470                           nl80211_fam.maxattr, nl80211_policy, NULL);
12471         if (err)
12472                 return err;
12473
12474         if (!attrbuf[NL80211_ATTR_VENDOR_ID] ||
12475             !attrbuf[NL80211_ATTR_VENDOR_SUBCMD])
12476                 return -EINVAL;
12477
12478         *wdev = __cfg80211_wdev_from_attrs(sock_net(skb->sk), attrbuf);
12479         if (IS_ERR(*wdev))
12480                 *wdev = NULL;
12481
12482         *rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf);
12483         if (IS_ERR(*rdev))
12484                 return PTR_ERR(*rdev);
12485
12486         vid = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_ID]);
12487         subcmd = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_SUBCMD]);
12488
12489         for (i = 0; i < (*rdev)->wiphy.n_vendor_commands; i++) {
12490                 const struct wiphy_vendor_command *vcmd;
12491
12492                 vcmd = &(*rdev)->wiphy.vendor_commands[i];
12493
12494                 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
12495                         continue;
12496
12497                 if (!vcmd->dumpit)
12498                         return -EOPNOTSUPP;
12499
12500                 vcmd_idx = i;
12501                 break;
12502         }
12503
12504         if (vcmd_idx < 0)
12505                 return -EOPNOTSUPP;
12506
12507         if (attrbuf[NL80211_ATTR_VENDOR_DATA]) {
12508                 data = nla_data(attrbuf[NL80211_ATTR_VENDOR_DATA]);
12509                 data_len = nla_len(attrbuf[NL80211_ATTR_VENDOR_DATA]);
12510         }
12511
12512         /* 0 is the first index - add 1 to parse only once */
12513         cb->args[0] = (*rdev)->wiphy_idx + 1;
12514         /* add 1 to know if it was NULL */
12515         cb->args[1] = *wdev ? (*wdev)->identifier + 1 : 0;
12516         cb->args[2] = vcmd_idx;
12517         cb->args[3] = (unsigned long)data;
12518         cb->args[4] = data_len;
12519
12520         /* keep rtnl locked in successful case */
12521         return 0;
12522 }
12523
12524 static int nl80211_vendor_cmd_dump(struct sk_buff *skb,
12525                                    struct netlink_callback *cb)
12526 {
12527         struct cfg80211_registered_device *rdev;
12528         struct wireless_dev *wdev;
12529         unsigned int vcmd_idx;
12530         const struct wiphy_vendor_command *vcmd;
12531         void *data;
12532         int data_len;
12533         int err;
12534         struct nlattr *vendor_data;
12535
12536         rtnl_lock();
12537         err = nl80211_prepare_vendor_dump(skb, cb, &rdev, &wdev);
12538         if (err)
12539                 goto out;
12540
12541         vcmd_idx = cb->args[2];
12542         data = (void *)cb->args[3];
12543         data_len = cb->args[4];
12544         vcmd = &rdev->wiphy.vendor_commands[vcmd_idx];
12545
12546         if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
12547                            WIPHY_VENDOR_CMD_NEED_NETDEV)) {
12548                 if (!wdev) {
12549                         err = -EINVAL;
12550                         goto out;
12551                 }
12552                 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
12553                     !wdev->netdev) {
12554                         err = -EINVAL;
12555                         goto out;
12556                 }
12557
12558                 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
12559                         if (!wdev_running(wdev)) {
12560                                 err = -ENETDOWN;
12561                                 goto out;
12562                         }
12563                 }
12564         }
12565
12566         while (1) {
12567                 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
12568                                            cb->nlh->nlmsg_seq, NLM_F_MULTI,
12569                                            NL80211_CMD_VENDOR);
12570                 if (!hdr)
12571                         break;
12572
12573                 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12574                     (wdev && nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
12575                                                wdev_id(wdev),
12576                                                NL80211_ATTR_PAD))) {
12577                         genlmsg_cancel(skb, hdr);
12578                         break;
12579                 }
12580
12581                 vendor_data = nla_nest_start(skb, NL80211_ATTR_VENDOR_DATA);
12582                 if (!vendor_data) {
12583                         genlmsg_cancel(skb, hdr);
12584                         break;
12585                 }
12586
12587                 err = vcmd->dumpit(&rdev->wiphy, wdev, skb, data, data_len,
12588                                    (unsigned long *)&cb->args[5]);
12589                 nla_nest_end(skb, vendor_data);
12590
12591                 if (err == -ENOBUFS || err == -ENOENT) {
12592                         genlmsg_cancel(skb, hdr);
12593                         break;
12594                 } else if (err) {
12595                         genlmsg_cancel(skb, hdr);
12596                         goto out;
12597                 }
12598
12599                 genlmsg_end(skb, hdr);
12600         }
12601
12602         err = skb->len;
12603  out:
12604         rtnl_unlock();
12605         return err;
12606 }
12607
12608 struct sk_buff *__cfg80211_alloc_reply_skb(struct wiphy *wiphy,
12609                                            enum nl80211_commands cmd,
12610                                            enum nl80211_attrs attr,
12611                                            int approxlen)
12612 {
12613         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12614
12615         if (WARN_ON(!rdev->cur_cmd_info))
12616                 return NULL;
12617
12618         return __cfg80211_alloc_vendor_skb(rdev, NULL, approxlen,
12619                                            rdev->cur_cmd_info->snd_portid,
12620                                            rdev->cur_cmd_info->snd_seq,
12621                                            cmd, attr, NULL, GFP_KERNEL);
12622 }
12623 EXPORT_SYMBOL(__cfg80211_alloc_reply_skb);
12624
12625 int cfg80211_vendor_cmd_reply(struct sk_buff *skb)
12626 {
12627         struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
12628         void *hdr = ((void **)skb->cb)[1];
12629         struct nlattr *data = ((void **)skb->cb)[2];
12630
12631         /* clear CB data for netlink core to own from now on */
12632         memset(skb->cb, 0, sizeof(skb->cb));
12633
12634         if (WARN_ON(!rdev->cur_cmd_info)) {
12635                 kfree_skb(skb);
12636                 return -EINVAL;
12637         }
12638
12639         nla_nest_end(skb, data);
12640         genlmsg_end(skb, hdr);
12641         return genlmsg_reply(skb, rdev->cur_cmd_info);
12642 }
12643 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_reply);
12644
12645 static int nl80211_set_qos_map(struct sk_buff *skb,
12646                                struct genl_info *info)
12647 {
12648         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12649         struct cfg80211_qos_map *qos_map = NULL;
12650         struct net_device *dev = info->user_ptr[1];
12651         u8 *pos, len, num_des, des_len, des;
12652         int ret;
12653
12654         if (!rdev->ops->set_qos_map)
12655                 return -EOPNOTSUPP;
12656
12657         if (info->attrs[NL80211_ATTR_QOS_MAP]) {
12658                 pos = nla_data(info->attrs[NL80211_ATTR_QOS_MAP]);
12659                 len = nla_len(info->attrs[NL80211_ATTR_QOS_MAP]);
12660
12661                 if (len % 2 || len < IEEE80211_QOS_MAP_LEN_MIN ||
12662                     len > IEEE80211_QOS_MAP_LEN_MAX)
12663                         return -EINVAL;
12664
12665                 qos_map = kzalloc(sizeof(struct cfg80211_qos_map), GFP_KERNEL);
12666                 if (!qos_map)
12667                         return -ENOMEM;
12668
12669                 num_des = (len - IEEE80211_QOS_MAP_LEN_MIN) >> 1;
12670                 if (num_des) {
12671                         des_len = num_des *
12672                                 sizeof(struct cfg80211_dscp_exception);
12673                         memcpy(qos_map->dscp_exception, pos, des_len);
12674                         qos_map->num_des = num_des;
12675                         for (des = 0; des < num_des; des++) {
12676                                 if (qos_map->dscp_exception[des].up > 7) {
12677                                         kfree(qos_map);
12678                                         return -EINVAL;
12679                                 }
12680                         }
12681                         pos += des_len;
12682                 }
12683                 memcpy(qos_map->up, pos, IEEE80211_QOS_MAP_LEN_MIN);
12684         }
12685
12686         wdev_lock(dev->ieee80211_ptr);
12687         ret = nl80211_key_allowed(dev->ieee80211_ptr);
12688         if (!ret)
12689                 ret = rdev_set_qos_map(rdev, dev, qos_map);
12690         wdev_unlock(dev->ieee80211_ptr);
12691
12692         kfree(qos_map);
12693         return ret;
12694 }
12695
12696 static int nl80211_add_tx_ts(struct sk_buff *skb, struct genl_info *info)
12697 {
12698         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12699         struct net_device *dev = info->user_ptr[1];
12700         struct wireless_dev *wdev = dev->ieee80211_ptr;
12701         const u8 *peer;
12702         u8 tsid, up;
12703         u16 admitted_time = 0;
12704         int err;
12705
12706         if (!(rdev->wiphy.features & NL80211_FEATURE_SUPPORTS_WMM_ADMISSION))
12707                 return -EOPNOTSUPP;
12708
12709         if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC] ||
12710             !info->attrs[NL80211_ATTR_USER_PRIO])
12711                 return -EINVAL;
12712
12713         tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
12714         up = nla_get_u8(info->attrs[NL80211_ATTR_USER_PRIO]);
12715
12716         /* WMM uses TIDs 0-7 even for TSPEC */
12717         if (tsid >= IEEE80211_FIRST_TSPEC_TSID) {
12718                 /* TODO: handle 802.11 TSPEC/admission control
12719                  * need more attributes for that (e.g. BA session requirement);
12720                  * change the WMM adminssion test above to allow both then
12721                  */
12722                 return -EINVAL;
12723         }
12724
12725         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
12726
12727         if (info->attrs[NL80211_ATTR_ADMITTED_TIME]) {
12728                 admitted_time =
12729                         nla_get_u16(info->attrs[NL80211_ATTR_ADMITTED_TIME]);
12730                 if (!admitted_time)
12731                         return -EINVAL;
12732         }
12733
12734         wdev_lock(wdev);
12735         switch (wdev->iftype) {
12736         case NL80211_IFTYPE_STATION:
12737         case NL80211_IFTYPE_P2P_CLIENT:
12738                 if (wdev->current_bss)
12739                         break;
12740                 err = -ENOTCONN;
12741                 goto out;
12742         default:
12743                 err = -EOPNOTSUPP;
12744                 goto out;
12745         }
12746
12747         err = rdev_add_tx_ts(rdev, dev, tsid, peer, up, admitted_time);
12748
12749  out:
12750         wdev_unlock(wdev);
12751         return err;
12752 }
12753
12754 static int nl80211_del_tx_ts(struct sk_buff *skb, struct genl_info *info)
12755 {
12756         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12757         struct net_device *dev = info->user_ptr[1];
12758         struct wireless_dev *wdev = dev->ieee80211_ptr;
12759         const u8 *peer;
12760         u8 tsid;
12761         int err;
12762
12763         if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC])
12764                 return -EINVAL;
12765
12766         tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
12767         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
12768
12769         wdev_lock(wdev);
12770         err = rdev_del_tx_ts(rdev, dev, tsid, peer);
12771         wdev_unlock(wdev);
12772
12773         return err;
12774 }
12775
12776 static int nl80211_tdls_channel_switch(struct sk_buff *skb,
12777                                        struct genl_info *info)
12778 {
12779         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12780         struct net_device *dev = info->user_ptr[1];
12781         struct wireless_dev *wdev = dev->ieee80211_ptr;
12782         struct cfg80211_chan_def chandef = {};
12783         const u8 *addr;
12784         u8 oper_class;
12785         int err;
12786
12787         if (!rdev->ops->tdls_channel_switch ||
12788             !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
12789                 return -EOPNOTSUPP;
12790
12791         switch (dev->ieee80211_ptr->iftype) {
12792         case NL80211_IFTYPE_STATION:
12793         case NL80211_IFTYPE_P2P_CLIENT:
12794                 break;
12795         default:
12796                 return -EOPNOTSUPP;
12797         }
12798
12799         if (!info->attrs[NL80211_ATTR_MAC] ||
12800             !info->attrs[NL80211_ATTR_OPER_CLASS])
12801                 return -EINVAL;
12802
12803         err = nl80211_parse_chandef(rdev, info, &chandef);
12804         if (err)
12805                 return err;
12806
12807         /*
12808          * Don't allow wide channels on the 2.4Ghz band, as per IEEE802.11-2012
12809          * section 10.22.6.2.1. Disallow 5/10Mhz channels as well for now, the
12810          * specification is not defined for them.
12811          */
12812         if (chandef.chan->band == NL80211_BAND_2GHZ &&
12813             chandef.width != NL80211_CHAN_WIDTH_20_NOHT &&
12814             chandef.width != NL80211_CHAN_WIDTH_20)
12815                 return -EINVAL;
12816
12817         /* we will be active on the TDLS link */
12818         if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
12819                                            wdev->iftype))
12820                 return -EINVAL;
12821
12822         /* don't allow switching to DFS channels */
12823         if (cfg80211_chandef_dfs_required(wdev->wiphy, &chandef, wdev->iftype))
12824                 return -EINVAL;
12825
12826         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
12827         oper_class = nla_get_u8(info->attrs[NL80211_ATTR_OPER_CLASS]);
12828
12829         wdev_lock(wdev);
12830         err = rdev_tdls_channel_switch(rdev, dev, addr, oper_class, &chandef);
12831         wdev_unlock(wdev);
12832
12833         return err;
12834 }
12835
12836 static int nl80211_tdls_cancel_channel_switch(struct sk_buff *skb,
12837                                               struct genl_info *info)
12838 {
12839         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12840         struct net_device *dev = info->user_ptr[1];
12841         struct wireless_dev *wdev = dev->ieee80211_ptr;
12842         const u8 *addr;
12843
12844         if (!rdev->ops->tdls_channel_switch ||
12845             !rdev->ops->tdls_cancel_channel_switch ||
12846             !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
12847                 return -EOPNOTSUPP;
12848
12849         switch (dev->ieee80211_ptr->iftype) {
12850         case NL80211_IFTYPE_STATION:
12851         case NL80211_IFTYPE_P2P_CLIENT:
12852                 break;
12853         default:
12854                 return -EOPNOTSUPP;
12855         }
12856
12857         if (!info->attrs[NL80211_ATTR_MAC])
12858                 return -EINVAL;
12859
12860         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
12861
12862         wdev_lock(wdev);
12863         rdev_tdls_cancel_channel_switch(rdev, dev, addr);
12864         wdev_unlock(wdev);
12865
12866         return 0;
12867 }
12868
12869 static int nl80211_set_multicast_to_unicast(struct sk_buff *skb,
12870                                             struct genl_info *info)
12871 {
12872         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12873         struct net_device *dev = info->user_ptr[1];
12874         struct wireless_dev *wdev = dev->ieee80211_ptr;
12875         const struct nlattr *nla;
12876         bool enabled;
12877
12878         if (!rdev->ops->set_multicast_to_unicast)
12879                 return -EOPNOTSUPP;
12880
12881         if (wdev->iftype != NL80211_IFTYPE_AP &&
12882             wdev->iftype != NL80211_IFTYPE_P2P_GO)
12883                 return -EOPNOTSUPP;
12884
12885         nla = info->attrs[NL80211_ATTR_MULTICAST_TO_UNICAST_ENABLED];
12886         enabled = nla_get_flag(nla);
12887
12888         return rdev_set_multicast_to_unicast(rdev, dev, enabled);
12889 }
12890
12891 static int nl80211_set_pmk(struct sk_buff *skb, struct genl_info *info)
12892 {
12893         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12894         struct net_device *dev = info->user_ptr[1];
12895         struct wireless_dev *wdev = dev->ieee80211_ptr;
12896         struct cfg80211_pmk_conf pmk_conf = {};
12897         int ret;
12898
12899         if (wdev->iftype != NL80211_IFTYPE_STATION &&
12900             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
12901                 return -EOPNOTSUPP;
12902
12903         if (!wiphy_ext_feature_isset(&rdev->wiphy,
12904                                      NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
12905                 return -EOPNOTSUPP;
12906
12907         if (!info->attrs[NL80211_ATTR_MAC] || !info->attrs[NL80211_ATTR_PMK])
12908                 return -EINVAL;
12909
12910         wdev_lock(wdev);
12911         if (!wdev->current_bss) {
12912                 ret = -ENOTCONN;
12913                 goto out;
12914         }
12915
12916         pmk_conf.aa = nla_data(info->attrs[NL80211_ATTR_MAC]);
12917         if (memcmp(pmk_conf.aa, wdev->current_bss->pub.bssid, ETH_ALEN)) {
12918                 ret = -EINVAL;
12919                 goto out;
12920         }
12921
12922         pmk_conf.pmk = nla_data(info->attrs[NL80211_ATTR_PMK]);
12923         pmk_conf.pmk_len = nla_len(info->attrs[NL80211_ATTR_PMK]);
12924         if (pmk_conf.pmk_len != WLAN_PMK_LEN &&
12925             pmk_conf.pmk_len != WLAN_PMK_LEN_SUITE_B_192) {
12926                 ret = -EINVAL;
12927                 goto out;
12928         }
12929
12930         if (info->attrs[NL80211_ATTR_PMKR0_NAME]) {
12931                 int r0_name_len = nla_len(info->attrs[NL80211_ATTR_PMKR0_NAME]);
12932
12933                 if (r0_name_len != WLAN_PMK_NAME_LEN) {
12934                         ret = -EINVAL;
12935                         goto out;
12936                 }
12937
12938                 pmk_conf.pmk_r0_name =
12939                         nla_data(info->attrs[NL80211_ATTR_PMKR0_NAME]);
12940         }
12941
12942         ret = rdev_set_pmk(rdev, dev, &pmk_conf);
12943 out:
12944         wdev_unlock(wdev);
12945         return ret;
12946 }
12947
12948 static int nl80211_del_pmk(struct sk_buff *skb, struct genl_info *info)
12949 {
12950         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12951         struct net_device *dev = info->user_ptr[1];
12952         struct wireless_dev *wdev = dev->ieee80211_ptr;
12953         const u8 *aa;
12954         int ret;
12955
12956         if (wdev->iftype != NL80211_IFTYPE_STATION &&
12957             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
12958                 return -EOPNOTSUPP;
12959
12960         if (!wiphy_ext_feature_isset(&rdev->wiphy,
12961                                      NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
12962                 return -EOPNOTSUPP;
12963
12964         if (!info->attrs[NL80211_ATTR_MAC])
12965                 return -EINVAL;
12966
12967         wdev_lock(wdev);
12968         aa = nla_data(info->attrs[NL80211_ATTR_MAC]);
12969         ret = rdev_del_pmk(rdev, dev, aa);
12970         wdev_unlock(wdev);
12971
12972         return ret;
12973 }
12974
12975 static int nl80211_external_auth(struct sk_buff *skb, struct genl_info *info)
12976 {
12977         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12978         struct net_device *dev = info->user_ptr[1];
12979         struct cfg80211_external_auth_params params;
12980
12981         if (!rdev->ops->external_auth)
12982                 return -EOPNOTSUPP;
12983
12984         if (!info->attrs[NL80211_ATTR_SSID])
12985                 return -EINVAL;
12986
12987         if (!info->attrs[NL80211_ATTR_BSSID])
12988                 return -EINVAL;
12989
12990         if (!info->attrs[NL80211_ATTR_STATUS_CODE])
12991                 return -EINVAL;
12992
12993         memset(&params, 0, sizeof(params));
12994
12995         params.ssid.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
12996         if (params.ssid.ssid_len == 0 ||
12997             params.ssid.ssid_len > IEEE80211_MAX_SSID_LEN)
12998                 return -EINVAL;
12999         memcpy(params.ssid.ssid, nla_data(info->attrs[NL80211_ATTR_SSID]),
13000                params.ssid.ssid_len);
13001
13002         memcpy(params.bssid, nla_data(info->attrs[NL80211_ATTR_BSSID]),
13003                ETH_ALEN);
13004
13005         params.status = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
13006
13007         return rdev_external_auth(rdev, dev, &params);
13008 }
13009
13010 static int nl80211_tx_control_port(struct sk_buff *skb, struct genl_info *info)
13011 {
13012         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13013         struct net_device *dev = info->user_ptr[1];
13014         struct wireless_dev *wdev = dev->ieee80211_ptr;
13015         const u8 *buf;
13016         size_t len;
13017         u8 *dest;
13018         u16 proto;
13019         bool noencrypt;
13020         int err;
13021
13022         if (!wiphy_ext_feature_isset(&rdev->wiphy,
13023                                      NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211))
13024                 return -EOPNOTSUPP;
13025
13026         if (!rdev->ops->tx_control_port)
13027                 return -EOPNOTSUPP;
13028
13029         if (!info->attrs[NL80211_ATTR_FRAME] ||
13030             !info->attrs[NL80211_ATTR_MAC] ||
13031             !info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
13032                 GENL_SET_ERR_MSG(info, "Frame, MAC or ethertype missing");
13033                 return -EINVAL;
13034         }
13035
13036         wdev_lock(wdev);
13037
13038         switch (wdev->iftype) {
13039         case NL80211_IFTYPE_AP:
13040         case NL80211_IFTYPE_P2P_GO:
13041         case NL80211_IFTYPE_MESH_POINT:
13042                 break;
13043         case NL80211_IFTYPE_ADHOC:
13044         case NL80211_IFTYPE_STATION:
13045         case NL80211_IFTYPE_P2P_CLIENT:
13046                 if (wdev->current_bss)
13047                         break;
13048                 err = -ENOTCONN;
13049                 goto out;
13050         default:
13051                 err = -EOPNOTSUPP;
13052                 goto out;
13053         }
13054
13055         wdev_unlock(wdev);
13056
13057         buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
13058         len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
13059         dest = nla_data(info->attrs[NL80211_ATTR_MAC]);
13060         proto = nla_get_u16(info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
13061         noencrypt =
13062                 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT]);
13063
13064         return rdev_tx_control_port(rdev, dev, buf, len,
13065                                     dest, cpu_to_be16(proto), noencrypt);
13066
13067  out:
13068         wdev_unlock(wdev);
13069         return err;
13070 }
13071
13072 static int nl80211_get_ftm_responder_stats(struct sk_buff *skb,
13073                                            struct genl_info *info)
13074 {
13075         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13076         struct net_device *dev = info->user_ptr[1];
13077         struct wireless_dev *wdev = dev->ieee80211_ptr;
13078         struct cfg80211_ftm_responder_stats ftm_stats = {};
13079         struct sk_buff *msg;
13080         void *hdr;
13081         struct nlattr *ftm_stats_attr;
13082         int err;
13083
13084         if (wdev->iftype != NL80211_IFTYPE_AP || !wdev->beacon_interval)
13085                 return -EOPNOTSUPP;
13086
13087         err = rdev_get_ftm_responder_stats(rdev, dev, &ftm_stats);
13088         if (err)
13089                 return err;
13090
13091         if (!ftm_stats.filled)
13092                 return -ENODATA;
13093
13094         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13095         if (!msg)
13096                 return -ENOMEM;
13097
13098         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
13099                              NL80211_CMD_GET_FTM_RESPONDER_STATS);
13100         if (!hdr)
13101                 return -ENOBUFS;
13102
13103         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
13104                 goto nla_put_failure;
13105
13106         ftm_stats_attr = nla_nest_start(msg, NL80211_ATTR_FTM_RESPONDER_STATS);
13107         if (!ftm_stats_attr)
13108                 goto nla_put_failure;
13109
13110 #define SET_FTM(field, name, type)                                       \
13111         do { if ((ftm_stats.filled & BIT(NL80211_FTM_STATS_ ## name)) && \
13112             nla_put_ ## type(msg, NL80211_FTM_STATS_ ## name,            \
13113                              ftm_stats.field))                           \
13114                 goto nla_put_failure; } while (0)
13115 #define SET_FTM_U64(field, name)                                         \
13116         do { if ((ftm_stats.filled & BIT(NL80211_FTM_STATS_ ## name)) && \
13117             nla_put_u64_64bit(msg, NL80211_FTM_STATS_ ## name,           \
13118                               ftm_stats.field, NL80211_FTM_STATS_PAD))   \
13119                 goto nla_put_failure; } while (0)
13120
13121         SET_FTM(success_num, SUCCESS_NUM, u32);
13122         SET_FTM(partial_num, PARTIAL_NUM, u32);
13123         SET_FTM(failed_num, FAILED_NUM, u32);
13124         SET_FTM(asap_num, ASAP_NUM, u32);
13125         SET_FTM(non_asap_num, NON_ASAP_NUM, u32);
13126         SET_FTM_U64(total_duration_ms, TOTAL_DURATION_MSEC);
13127         SET_FTM(unknown_triggers_num, UNKNOWN_TRIGGERS_NUM, u32);
13128         SET_FTM(reschedule_requests_num, RESCHEDULE_REQUESTS_NUM, u32);
13129         SET_FTM(out_of_window_triggers_num, OUT_OF_WINDOW_TRIGGERS_NUM, u32);
13130 #undef SET_FTM
13131
13132         nla_nest_end(msg, ftm_stats_attr);
13133
13134         genlmsg_end(msg, hdr);
13135         return genlmsg_reply(msg, info);
13136
13137 nla_put_failure:
13138         nlmsg_free(msg);
13139         return -ENOBUFS;
13140 }
13141
13142 #define NL80211_FLAG_NEED_WIPHY         0x01
13143 #define NL80211_FLAG_NEED_NETDEV        0x02
13144 #define NL80211_FLAG_NEED_RTNL          0x04
13145 #define NL80211_FLAG_CHECK_NETDEV_UP    0x08
13146 #define NL80211_FLAG_NEED_NETDEV_UP     (NL80211_FLAG_NEED_NETDEV |\
13147                                          NL80211_FLAG_CHECK_NETDEV_UP)
13148 #define NL80211_FLAG_NEED_WDEV          0x10
13149 /* If a netdev is associated, it must be UP, P2P must be started */
13150 #define NL80211_FLAG_NEED_WDEV_UP       (NL80211_FLAG_NEED_WDEV |\
13151                                          NL80211_FLAG_CHECK_NETDEV_UP)
13152 #define NL80211_FLAG_CLEAR_SKB          0x20
13153
13154 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
13155                             struct genl_info *info)
13156 {
13157         struct cfg80211_registered_device *rdev;
13158         struct wireless_dev *wdev;
13159         struct net_device *dev;
13160         bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
13161
13162         if (rtnl)
13163                 rtnl_lock();
13164
13165         if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
13166                 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
13167                 if (IS_ERR(rdev)) {
13168                         if (rtnl)
13169                                 rtnl_unlock();
13170                         return PTR_ERR(rdev);
13171                 }
13172                 info->user_ptr[0] = rdev;
13173         } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV ||
13174                    ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
13175                 ASSERT_RTNL();
13176
13177                 wdev = __cfg80211_wdev_from_attrs(genl_info_net(info),
13178                                                   info->attrs);
13179                 if (IS_ERR(wdev)) {
13180                         if (rtnl)
13181                                 rtnl_unlock();
13182                         return PTR_ERR(wdev);
13183                 }
13184
13185                 dev = wdev->netdev;
13186                 rdev = wiphy_to_rdev(wdev->wiphy);
13187
13188                 if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
13189                         if (!dev) {
13190                                 if (rtnl)
13191                                         rtnl_unlock();
13192                                 return -EINVAL;
13193                         }
13194
13195                         info->user_ptr[1] = dev;
13196                 } else {
13197                         info->user_ptr[1] = wdev;
13198                 }
13199
13200                 if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
13201                     !wdev_running(wdev)) {
13202                         if (rtnl)
13203                                 rtnl_unlock();
13204                         return -ENETDOWN;
13205                 }
13206
13207                 if (dev)
13208                         dev_hold(dev);
13209
13210                 info->user_ptr[0] = rdev;
13211         }
13212
13213         return 0;
13214 }
13215
13216 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
13217                               struct genl_info *info)
13218 {
13219         if (info->user_ptr[1]) {
13220                 if (ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
13221                         struct wireless_dev *wdev = info->user_ptr[1];
13222
13223                         if (wdev->netdev)
13224                                 dev_put(wdev->netdev);
13225                 } else {
13226                         dev_put(info->user_ptr[1]);
13227                 }
13228         }
13229
13230         if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
13231                 rtnl_unlock();
13232
13233         /* If needed, clear the netlink message payload from the SKB
13234          * as it might contain key data that shouldn't stick around on
13235          * the heap after the SKB is freed. The netlink message header
13236          * is still needed for further processing, so leave it intact.
13237          */
13238         if (ops->internal_flags & NL80211_FLAG_CLEAR_SKB) {
13239                 struct nlmsghdr *nlh = nlmsg_hdr(skb);
13240
13241                 memset(nlmsg_data(nlh), 0, nlmsg_len(nlh));
13242         }
13243 }
13244
13245 static const struct genl_ops nl80211_ops[] = {
13246         {
13247                 .cmd = NL80211_CMD_GET_WIPHY,
13248                 .doit = nl80211_get_wiphy,
13249                 .dumpit = nl80211_dump_wiphy,
13250                 .done = nl80211_dump_wiphy_done,
13251                 .policy = nl80211_policy,
13252                 /* can be retrieved by unprivileged users */
13253                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13254                                   NL80211_FLAG_NEED_RTNL,
13255         },
13256         {
13257                 .cmd = NL80211_CMD_SET_WIPHY,
13258                 .doit = nl80211_set_wiphy,
13259                 .policy = nl80211_policy,
13260                 .flags = GENL_UNS_ADMIN_PERM,
13261                 .internal_flags = NL80211_FLAG_NEED_RTNL,
13262         },
13263         {
13264                 .cmd = NL80211_CMD_GET_INTERFACE,
13265                 .doit = nl80211_get_interface,
13266                 .dumpit = nl80211_dump_interface,
13267                 .policy = nl80211_policy,
13268                 /* can be retrieved by unprivileged users */
13269                 .internal_flags = NL80211_FLAG_NEED_WDEV |
13270                                   NL80211_FLAG_NEED_RTNL,
13271         },
13272         {
13273                 .cmd = NL80211_CMD_SET_INTERFACE,
13274                 .doit = nl80211_set_interface,
13275                 .policy = nl80211_policy,
13276                 .flags = GENL_UNS_ADMIN_PERM,
13277                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13278                                   NL80211_FLAG_NEED_RTNL,
13279         },
13280         {
13281                 .cmd = NL80211_CMD_NEW_INTERFACE,
13282                 .doit = nl80211_new_interface,
13283                 .policy = nl80211_policy,
13284                 .flags = GENL_UNS_ADMIN_PERM,
13285                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13286                                   NL80211_FLAG_NEED_RTNL,
13287         },
13288         {
13289                 .cmd = NL80211_CMD_DEL_INTERFACE,
13290                 .doit = nl80211_del_interface,
13291                 .policy = nl80211_policy,
13292                 .flags = GENL_UNS_ADMIN_PERM,
13293                 .internal_flags = NL80211_FLAG_NEED_WDEV |
13294                                   NL80211_FLAG_NEED_RTNL,
13295         },
13296         {
13297                 .cmd = NL80211_CMD_GET_KEY,
13298                 .doit = nl80211_get_key,
13299                 .policy = nl80211_policy,
13300                 .flags = GENL_UNS_ADMIN_PERM,
13301                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13302                                   NL80211_FLAG_NEED_RTNL,
13303         },
13304         {
13305                 .cmd = NL80211_CMD_SET_KEY,
13306                 .doit = nl80211_set_key,
13307                 .policy = nl80211_policy,
13308                 .flags = GENL_UNS_ADMIN_PERM,
13309                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13310                                   NL80211_FLAG_NEED_RTNL |
13311                                   NL80211_FLAG_CLEAR_SKB,
13312         },
13313         {
13314                 .cmd = NL80211_CMD_NEW_KEY,
13315                 .doit = nl80211_new_key,
13316                 .policy = nl80211_policy,
13317                 .flags = GENL_UNS_ADMIN_PERM,
13318                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13319                                   NL80211_FLAG_NEED_RTNL |
13320                                   NL80211_FLAG_CLEAR_SKB,
13321         },
13322         {
13323                 .cmd = NL80211_CMD_DEL_KEY,
13324                 .doit = nl80211_del_key,
13325                 .policy = nl80211_policy,
13326                 .flags = GENL_UNS_ADMIN_PERM,
13327                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13328                                   NL80211_FLAG_NEED_RTNL,
13329         },
13330         {
13331                 .cmd = NL80211_CMD_SET_BEACON,
13332                 .policy = nl80211_policy,
13333                 .flags = GENL_UNS_ADMIN_PERM,
13334                 .doit = nl80211_set_beacon,
13335                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13336                                   NL80211_FLAG_NEED_RTNL,
13337         },
13338         {
13339                 .cmd = NL80211_CMD_START_AP,
13340                 .policy = nl80211_policy,
13341                 .flags = GENL_UNS_ADMIN_PERM,
13342                 .doit = nl80211_start_ap,
13343                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13344                                   NL80211_FLAG_NEED_RTNL,
13345         },
13346         {
13347                 .cmd = NL80211_CMD_STOP_AP,
13348                 .policy = nl80211_policy,
13349                 .flags = GENL_UNS_ADMIN_PERM,
13350                 .doit = nl80211_stop_ap,
13351                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13352                                   NL80211_FLAG_NEED_RTNL,
13353         },
13354         {
13355                 .cmd = NL80211_CMD_GET_STATION,
13356                 .doit = nl80211_get_station,
13357                 .dumpit = nl80211_dump_station,
13358                 .policy = nl80211_policy,
13359                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13360                                   NL80211_FLAG_NEED_RTNL,
13361         },
13362         {
13363                 .cmd = NL80211_CMD_SET_STATION,
13364                 .doit = nl80211_set_station,
13365                 .policy = nl80211_policy,
13366                 .flags = GENL_UNS_ADMIN_PERM,
13367                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13368                                   NL80211_FLAG_NEED_RTNL,
13369         },
13370         {
13371                 .cmd = NL80211_CMD_NEW_STATION,
13372                 .doit = nl80211_new_station,
13373                 .policy = nl80211_policy,
13374                 .flags = GENL_UNS_ADMIN_PERM,
13375                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13376                                   NL80211_FLAG_NEED_RTNL,
13377         },
13378         {
13379                 .cmd = NL80211_CMD_DEL_STATION,
13380                 .doit = nl80211_del_station,
13381                 .policy = nl80211_policy,
13382                 .flags = GENL_UNS_ADMIN_PERM,
13383                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13384                                   NL80211_FLAG_NEED_RTNL,
13385         },
13386         {
13387                 .cmd = NL80211_CMD_GET_MPATH,
13388                 .doit = nl80211_get_mpath,
13389                 .dumpit = nl80211_dump_mpath,
13390                 .policy = nl80211_policy,
13391                 .flags = GENL_UNS_ADMIN_PERM,
13392                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13393                                   NL80211_FLAG_NEED_RTNL,
13394         },
13395         {
13396                 .cmd = NL80211_CMD_GET_MPP,
13397                 .doit = nl80211_get_mpp,
13398                 .dumpit = nl80211_dump_mpp,
13399                 .policy = nl80211_policy,
13400                 .flags = GENL_UNS_ADMIN_PERM,
13401                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13402                                   NL80211_FLAG_NEED_RTNL,
13403         },
13404         {
13405                 .cmd = NL80211_CMD_SET_MPATH,
13406                 .doit = nl80211_set_mpath,
13407                 .policy = nl80211_policy,
13408                 .flags = GENL_UNS_ADMIN_PERM,
13409                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13410                                   NL80211_FLAG_NEED_RTNL,
13411         },
13412         {
13413                 .cmd = NL80211_CMD_NEW_MPATH,
13414                 .doit = nl80211_new_mpath,
13415                 .policy = nl80211_policy,
13416                 .flags = GENL_UNS_ADMIN_PERM,
13417                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13418                                   NL80211_FLAG_NEED_RTNL,
13419         },
13420         {
13421                 .cmd = NL80211_CMD_DEL_MPATH,
13422                 .doit = nl80211_del_mpath,
13423                 .policy = nl80211_policy,
13424                 .flags = GENL_UNS_ADMIN_PERM,
13425                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13426                                   NL80211_FLAG_NEED_RTNL,
13427         },
13428         {
13429                 .cmd = NL80211_CMD_SET_BSS,
13430                 .doit = nl80211_set_bss,
13431                 .policy = nl80211_policy,
13432                 .flags = GENL_UNS_ADMIN_PERM,
13433                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13434                                   NL80211_FLAG_NEED_RTNL,
13435         },
13436         {
13437                 .cmd = NL80211_CMD_GET_REG,
13438                 .doit = nl80211_get_reg_do,
13439                 .dumpit = nl80211_get_reg_dump,
13440                 .policy = nl80211_policy,
13441                 .internal_flags = NL80211_FLAG_NEED_RTNL,
13442                 /* can be retrieved by unprivileged users */
13443         },
13444 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
13445         {
13446                 .cmd = NL80211_CMD_SET_REG,
13447                 .doit = nl80211_set_reg,
13448                 .policy = nl80211_policy,
13449                 .flags = GENL_ADMIN_PERM,
13450                 .internal_flags = NL80211_FLAG_NEED_RTNL,
13451         },
13452 #endif
13453         {
13454                 .cmd = NL80211_CMD_REQ_SET_REG,
13455                 .doit = nl80211_req_set_reg,
13456                 .policy = nl80211_policy,
13457                 .flags = GENL_ADMIN_PERM,
13458         },
13459         {
13460                 .cmd = NL80211_CMD_RELOAD_REGDB,
13461                 .doit = nl80211_reload_regdb,
13462                 .policy = nl80211_policy,
13463                 .flags = GENL_ADMIN_PERM,
13464         },
13465         {
13466                 .cmd = NL80211_CMD_GET_MESH_CONFIG,
13467                 .doit = nl80211_get_mesh_config,
13468                 .policy = nl80211_policy,
13469                 /* can be retrieved by unprivileged users */
13470                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13471                                   NL80211_FLAG_NEED_RTNL,
13472         },
13473         {
13474                 .cmd = NL80211_CMD_SET_MESH_CONFIG,
13475                 .doit = nl80211_update_mesh_config,
13476                 .policy = nl80211_policy,
13477                 .flags = GENL_UNS_ADMIN_PERM,
13478                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13479                                   NL80211_FLAG_NEED_RTNL,
13480         },
13481         {
13482                 .cmd = NL80211_CMD_TRIGGER_SCAN,
13483                 .doit = nl80211_trigger_scan,
13484                 .policy = nl80211_policy,
13485                 .flags = GENL_UNS_ADMIN_PERM,
13486                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13487                                   NL80211_FLAG_NEED_RTNL,
13488         },
13489         {
13490                 .cmd = NL80211_CMD_ABORT_SCAN,
13491                 .doit = nl80211_abort_scan,
13492                 .policy = nl80211_policy,
13493                 .flags = GENL_UNS_ADMIN_PERM,
13494                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13495                                   NL80211_FLAG_NEED_RTNL,
13496         },
13497         {
13498                 .cmd = NL80211_CMD_GET_SCAN,
13499                 .policy = nl80211_policy,
13500                 .dumpit = nl80211_dump_scan,
13501         },
13502         {
13503                 .cmd = NL80211_CMD_START_SCHED_SCAN,
13504                 .doit = nl80211_start_sched_scan,
13505                 .policy = nl80211_policy,
13506                 .flags = GENL_UNS_ADMIN_PERM,
13507                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13508                                   NL80211_FLAG_NEED_RTNL,
13509         },
13510         {
13511                 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
13512                 .doit = nl80211_stop_sched_scan,
13513                 .policy = nl80211_policy,
13514                 .flags = GENL_UNS_ADMIN_PERM,
13515                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13516                                   NL80211_FLAG_NEED_RTNL,
13517         },
13518         {
13519                 .cmd = NL80211_CMD_AUTHENTICATE,
13520                 .doit = nl80211_authenticate,
13521                 .policy = nl80211_policy,
13522                 .flags = GENL_UNS_ADMIN_PERM,
13523                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13524                                   NL80211_FLAG_NEED_RTNL |
13525                                   NL80211_FLAG_CLEAR_SKB,
13526         },
13527         {
13528                 .cmd = NL80211_CMD_ASSOCIATE,
13529                 .doit = nl80211_associate,
13530                 .policy = nl80211_policy,
13531                 .flags = GENL_UNS_ADMIN_PERM,
13532                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13533                                   NL80211_FLAG_NEED_RTNL,
13534         },
13535         {
13536                 .cmd = NL80211_CMD_DEAUTHENTICATE,
13537                 .doit = nl80211_deauthenticate,
13538                 .policy = nl80211_policy,
13539                 .flags = GENL_UNS_ADMIN_PERM,
13540                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13541                                   NL80211_FLAG_NEED_RTNL,
13542         },
13543         {
13544                 .cmd = NL80211_CMD_DISASSOCIATE,
13545                 .doit = nl80211_disassociate,
13546                 .policy = nl80211_policy,
13547                 .flags = GENL_UNS_ADMIN_PERM,
13548                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13549                                   NL80211_FLAG_NEED_RTNL,
13550         },
13551         {
13552                 .cmd = NL80211_CMD_JOIN_IBSS,
13553                 .doit = nl80211_join_ibss,
13554                 .policy = nl80211_policy,
13555                 .flags = GENL_UNS_ADMIN_PERM,
13556                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13557                                   NL80211_FLAG_NEED_RTNL,
13558         },
13559         {
13560                 .cmd = NL80211_CMD_LEAVE_IBSS,
13561                 .doit = nl80211_leave_ibss,
13562                 .policy = nl80211_policy,
13563                 .flags = GENL_UNS_ADMIN_PERM,
13564                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13565                                   NL80211_FLAG_NEED_RTNL,
13566         },
13567 #ifdef CONFIG_NL80211_TESTMODE
13568         {
13569                 .cmd = NL80211_CMD_TESTMODE,
13570                 .doit = nl80211_testmode_do,
13571                 .dumpit = nl80211_testmode_dump,
13572                 .policy = nl80211_policy,
13573                 .flags = GENL_UNS_ADMIN_PERM,
13574                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13575                                   NL80211_FLAG_NEED_RTNL,
13576         },
13577 #endif
13578         {
13579                 .cmd = NL80211_CMD_CONNECT,
13580                 .doit = nl80211_connect,
13581                 .policy = nl80211_policy,
13582                 .flags = GENL_UNS_ADMIN_PERM,
13583                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13584                                   NL80211_FLAG_NEED_RTNL,
13585         },
13586         {
13587                 .cmd = NL80211_CMD_UPDATE_CONNECT_PARAMS,
13588                 .doit = nl80211_update_connect_params,
13589                 .policy = nl80211_policy,
13590                 .flags = GENL_ADMIN_PERM,
13591                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13592                                   NL80211_FLAG_NEED_RTNL,
13593         },
13594         {
13595                 .cmd = NL80211_CMD_DISCONNECT,
13596                 .doit = nl80211_disconnect,
13597                 .policy = nl80211_policy,
13598                 .flags = GENL_UNS_ADMIN_PERM,
13599                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13600                                   NL80211_FLAG_NEED_RTNL,
13601         },
13602         {
13603                 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
13604                 .doit = nl80211_wiphy_netns,
13605                 .policy = nl80211_policy,
13606                 .flags = GENL_UNS_ADMIN_PERM,
13607                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13608                                   NL80211_FLAG_NEED_RTNL,
13609         },
13610         {
13611                 .cmd = NL80211_CMD_GET_SURVEY,
13612                 .policy = nl80211_policy,
13613                 .dumpit = nl80211_dump_survey,
13614         },
13615         {
13616                 .cmd = NL80211_CMD_SET_PMKSA,
13617                 .doit = nl80211_setdel_pmksa,
13618                 .policy = nl80211_policy,
13619                 .flags = GENL_UNS_ADMIN_PERM,
13620                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13621                                   NL80211_FLAG_NEED_RTNL,
13622         },
13623         {
13624                 .cmd = NL80211_CMD_DEL_PMKSA,
13625                 .doit = nl80211_setdel_pmksa,
13626                 .policy = nl80211_policy,
13627                 .flags = GENL_UNS_ADMIN_PERM,
13628                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13629                                   NL80211_FLAG_NEED_RTNL,
13630         },
13631         {
13632                 .cmd = NL80211_CMD_FLUSH_PMKSA,
13633                 .doit = nl80211_flush_pmksa,
13634                 .policy = nl80211_policy,
13635                 .flags = GENL_UNS_ADMIN_PERM,
13636                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13637                                   NL80211_FLAG_NEED_RTNL,
13638         },
13639         {
13640                 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
13641                 .doit = nl80211_remain_on_channel,
13642                 .policy = nl80211_policy,
13643                 .flags = GENL_UNS_ADMIN_PERM,
13644                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13645                                   NL80211_FLAG_NEED_RTNL,
13646         },
13647         {
13648                 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
13649                 .doit = nl80211_cancel_remain_on_channel,
13650                 .policy = nl80211_policy,
13651                 .flags = GENL_UNS_ADMIN_PERM,
13652                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13653                                   NL80211_FLAG_NEED_RTNL,
13654         },
13655         {
13656                 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
13657                 .doit = nl80211_set_tx_bitrate_mask,
13658                 .policy = nl80211_policy,
13659                 .flags = GENL_UNS_ADMIN_PERM,
13660                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13661                                   NL80211_FLAG_NEED_RTNL,
13662         },
13663         {
13664                 .cmd = NL80211_CMD_REGISTER_FRAME,
13665                 .doit = nl80211_register_mgmt,
13666                 .policy = nl80211_policy,
13667                 .flags = GENL_UNS_ADMIN_PERM,
13668                 .internal_flags = NL80211_FLAG_NEED_WDEV |
13669                                   NL80211_FLAG_NEED_RTNL,
13670         },
13671         {
13672                 .cmd = NL80211_CMD_FRAME,
13673                 .doit = nl80211_tx_mgmt,
13674                 .policy = nl80211_policy,
13675                 .flags = GENL_UNS_ADMIN_PERM,
13676                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13677                                   NL80211_FLAG_NEED_RTNL,
13678         },
13679         {
13680                 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
13681                 .doit = nl80211_tx_mgmt_cancel_wait,
13682                 .policy = nl80211_policy,
13683                 .flags = GENL_UNS_ADMIN_PERM,
13684                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13685                                   NL80211_FLAG_NEED_RTNL,
13686         },
13687         {
13688                 .cmd = NL80211_CMD_SET_POWER_SAVE,
13689                 .doit = nl80211_set_power_save,
13690                 .policy = nl80211_policy,
13691                 .flags = GENL_UNS_ADMIN_PERM,
13692                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13693                                   NL80211_FLAG_NEED_RTNL,
13694         },
13695         {
13696                 .cmd = NL80211_CMD_GET_POWER_SAVE,
13697                 .doit = nl80211_get_power_save,
13698                 .policy = nl80211_policy,
13699                 /* can be retrieved by unprivileged users */
13700                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13701                                   NL80211_FLAG_NEED_RTNL,
13702         },
13703         {
13704                 .cmd = NL80211_CMD_SET_CQM,
13705                 .doit = nl80211_set_cqm,
13706                 .policy = nl80211_policy,
13707                 .flags = GENL_UNS_ADMIN_PERM,
13708                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13709                                   NL80211_FLAG_NEED_RTNL,
13710         },
13711         {
13712                 .cmd = NL80211_CMD_SET_CHANNEL,
13713                 .doit = nl80211_set_channel,
13714                 .policy = nl80211_policy,
13715                 .flags = GENL_UNS_ADMIN_PERM,
13716                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13717                                   NL80211_FLAG_NEED_RTNL,
13718         },
13719         {
13720                 .cmd = NL80211_CMD_SET_WDS_PEER,
13721                 .doit = nl80211_set_wds_peer,
13722                 .policy = nl80211_policy,
13723                 .flags = GENL_UNS_ADMIN_PERM,
13724                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13725                                   NL80211_FLAG_NEED_RTNL,
13726         },
13727         {
13728                 .cmd = NL80211_CMD_JOIN_MESH,
13729                 .doit = nl80211_join_mesh,
13730                 .policy = nl80211_policy,
13731                 .flags = GENL_UNS_ADMIN_PERM,
13732                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13733                                   NL80211_FLAG_NEED_RTNL,
13734         },
13735         {
13736                 .cmd = NL80211_CMD_LEAVE_MESH,
13737                 .doit = nl80211_leave_mesh,
13738                 .policy = nl80211_policy,
13739                 .flags = GENL_UNS_ADMIN_PERM,
13740                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13741                                   NL80211_FLAG_NEED_RTNL,
13742         },
13743         {
13744                 .cmd = NL80211_CMD_JOIN_OCB,
13745                 .doit = nl80211_join_ocb,
13746                 .policy = nl80211_policy,
13747                 .flags = GENL_UNS_ADMIN_PERM,
13748                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13749                                   NL80211_FLAG_NEED_RTNL,
13750         },
13751         {
13752                 .cmd = NL80211_CMD_LEAVE_OCB,
13753                 .doit = nl80211_leave_ocb,
13754                 .policy = nl80211_policy,
13755                 .flags = GENL_UNS_ADMIN_PERM,
13756                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13757                                   NL80211_FLAG_NEED_RTNL,
13758         },
13759 #ifdef CONFIG_PM
13760         {
13761                 .cmd = NL80211_CMD_GET_WOWLAN,
13762                 .doit = nl80211_get_wowlan,
13763                 .policy = nl80211_policy,
13764                 /* can be retrieved by unprivileged users */
13765                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13766                                   NL80211_FLAG_NEED_RTNL,
13767         },
13768         {
13769                 .cmd = NL80211_CMD_SET_WOWLAN,
13770                 .doit = nl80211_set_wowlan,
13771                 .policy = nl80211_policy,
13772                 .flags = GENL_UNS_ADMIN_PERM,
13773                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13774                                   NL80211_FLAG_NEED_RTNL,
13775         },
13776 #endif
13777         {
13778                 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
13779                 .doit = nl80211_set_rekey_data,
13780                 .policy = nl80211_policy,
13781                 .flags = GENL_UNS_ADMIN_PERM,
13782                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13783                                   NL80211_FLAG_NEED_RTNL |
13784                                   NL80211_FLAG_CLEAR_SKB,
13785         },
13786         {
13787                 .cmd = NL80211_CMD_TDLS_MGMT,
13788                 .doit = nl80211_tdls_mgmt,
13789                 .policy = nl80211_policy,
13790                 .flags = GENL_UNS_ADMIN_PERM,
13791                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13792                                   NL80211_FLAG_NEED_RTNL,
13793         },
13794         {
13795                 .cmd = NL80211_CMD_TDLS_OPER,
13796                 .doit = nl80211_tdls_oper,
13797                 .policy = nl80211_policy,
13798                 .flags = GENL_UNS_ADMIN_PERM,
13799                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13800                                   NL80211_FLAG_NEED_RTNL,
13801         },
13802         {
13803                 .cmd = NL80211_CMD_UNEXPECTED_FRAME,
13804                 .doit = nl80211_register_unexpected_frame,
13805                 .policy = nl80211_policy,
13806                 .flags = GENL_UNS_ADMIN_PERM,
13807                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13808                                   NL80211_FLAG_NEED_RTNL,
13809         },
13810         {
13811                 .cmd = NL80211_CMD_PROBE_CLIENT,
13812                 .doit = nl80211_probe_client,
13813                 .policy = nl80211_policy,
13814                 .flags = GENL_UNS_ADMIN_PERM,
13815                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13816                                   NL80211_FLAG_NEED_RTNL,
13817         },
13818         {
13819                 .cmd = NL80211_CMD_REGISTER_BEACONS,
13820                 .doit = nl80211_register_beacons,
13821                 .policy = nl80211_policy,
13822                 .flags = GENL_UNS_ADMIN_PERM,
13823                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13824                                   NL80211_FLAG_NEED_RTNL,
13825         },
13826         {
13827                 .cmd = NL80211_CMD_SET_NOACK_MAP,
13828                 .doit = nl80211_set_noack_map,
13829                 .policy = nl80211_policy,
13830                 .flags = GENL_UNS_ADMIN_PERM,
13831                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13832                                   NL80211_FLAG_NEED_RTNL,
13833         },
13834         {
13835                 .cmd = NL80211_CMD_START_P2P_DEVICE,
13836                 .doit = nl80211_start_p2p_device,
13837                 .policy = nl80211_policy,
13838                 .flags = GENL_UNS_ADMIN_PERM,
13839                 .internal_flags = NL80211_FLAG_NEED_WDEV |
13840                                   NL80211_FLAG_NEED_RTNL,
13841         },
13842         {
13843                 .cmd = NL80211_CMD_STOP_P2P_DEVICE,
13844                 .doit = nl80211_stop_p2p_device,
13845                 .policy = nl80211_policy,
13846                 .flags = GENL_UNS_ADMIN_PERM,
13847                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13848                                   NL80211_FLAG_NEED_RTNL,
13849         },
13850         {
13851                 .cmd = NL80211_CMD_START_NAN,
13852                 .doit = nl80211_start_nan,
13853                 .policy = nl80211_policy,
13854                 .flags = GENL_ADMIN_PERM,
13855                 .internal_flags = NL80211_FLAG_NEED_WDEV |
13856                                   NL80211_FLAG_NEED_RTNL,
13857         },
13858         {
13859                 .cmd = NL80211_CMD_STOP_NAN,
13860                 .doit = nl80211_stop_nan,
13861                 .policy = nl80211_policy,
13862                 .flags = GENL_ADMIN_PERM,
13863                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13864                                   NL80211_FLAG_NEED_RTNL,
13865         },
13866         {
13867                 .cmd = NL80211_CMD_ADD_NAN_FUNCTION,
13868                 .doit = nl80211_nan_add_func,
13869                 .policy = nl80211_policy,
13870                 .flags = GENL_ADMIN_PERM,
13871                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13872                                   NL80211_FLAG_NEED_RTNL,
13873         },
13874         {
13875                 .cmd = NL80211_CMD_DEL_NAN_FUNCTION,
13876                 .doit = nl80211_nan_del_func,
13877                 .policy = nl80211_policy,
13878                 .flags = GENL_ADMIN_PERM,
13879                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13880                                   NL80211_FLAG_NEED_RTNL,
13881         },
13882         {
13883                 .cmd = NL80211_CMD_CHANGE_NAN_CONFIG,
13884                 .doit = nl80211_nan_change_config,
13885                 .policy = nl80211_policy,
13886                 .flags = GENL_ADMIN_PERM,
13887                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13888                                   NL80211_FLAG_NEED_RTNL,
13889         },
13890         {
13891                 .cmd = NL80211_CMD_SET_MCAST_RATE,
13892                 .doit = nl80211_set_mcast_rate,
13893                 .policy = nl80211_policy,
13894                 .flags = GENL_UNS_ADMIN_PERM,
13895                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13896                                   NL80211_FLAG_NEED_RTNL,
13897         },
13898         {
13899                 .cmd = NL80211_CMD_SET_MAC_ACL,
13900                 .doit = nl80211_set_mac_acl,
13901                 .policy = nl80211_policy,
13902                 .flags = GENL_UNS_ADMIN_PERM,
13903                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13904                                   NL80211_FLAG_NEED_RTNL,
13905         },
13906         {
13907                 .cmd = NL80211_CMD_RADAR_DETECT,
13908                 .doit = nl80211_start_radar_detection,
13909                 .policy = nl80211_policy,
13910                 .flags = GENL_UNS_ADMIN_PERM,
13911                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13912                                   NL80211_FLAG_NEED_RTNL,
13913         },
13914         {
13915                 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES,
13916                 .doit = nl80211_get_protocol_features,
13917                 .policy = nl80211_policy,
13918         },
13919         {
13920                 .cmd = NL80211_CMD_UPDATE_FT_IES,
13921                 .doit = nl80211_update_ft_ies,
13922                 .policy = nl80211_policy,
13923                 .flags = GENL_UNS_ADMIN_PERM,
13924                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13925                                   NL80211_FLAG_NEED_RTNL,
13926         },
13927         {
13928                 .cmd = NL80211_CMD_CRIT_PROTOCOL_START,
13929                 .doit = nl80211_crit_protocol_start,
13930                 .policy = nl80211_policy,
13931                 .flags = GENL_UNS_ADMIN_PERM,
13932                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13933                                   NL80211_FLAG_NEED_RTNL,
13934         },
13935         {
13936                 .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP,
13937                 .doit = nl80211_crit_protocol_stop,
13938                 .policy = nl80211_policy,
13939                 .flags = GENL_UNS_ADMIN_PERM,
13940                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13941                                   NL80211_FLAG_NEED_RTNL,
13942         },
13943         {
13944                 .cmd = NL80211_CMD_GET_COALESCE,
13945                 .doit = nl80211_get_coalesce,
13946                 .policy = nl80211_policy,
13947                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13948                                   NL80211_FLAG_NEED_RTNL,
13949         },
13950         {
13951                 .cmd = NL80211_CMD_SET_COALESCE,
13952                 .doit = nl80211_set_coalesce,
13953                 .policy = nl80211_policy,
13954                 .flags = GENL_UNS_ADMIN_PERM,
13955                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13956                                   NL80211_FLAG_NEED_RTNL,
13957         },
13958         {
13959                 .cmd = NL80211_CMD_CHANNEL_SWITCH,
13960                 .doit = nl80211_channel_switch,
13961                 .policy = nl80211_policy,
13962                 .flags = GENL_UNS_ADMIN_PERM,
13963                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13964                                   NL80211_FLAG_NEED_RTNL,
13965         },
13966         {
13967                 .cmd = NL80211_CMD_VENDOR,
13968                 .doit = nl80211_vendor_cmd,
13969                 .dumpit = nl80211_vendor_cmd_dump,
13970                 .policy = nl80211_policy,
13971                 .flags = GENL_UNS_ADMIN_PERM,
13972                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13973                                   NL80211_FLAG_NEED_RTNL,
13974         },
13975         {
13976                 .cmd = NL80211_CMD_SET_QOS_MAP,
13977                 .doit = nl80211_set_qos_map,
13978                 .policy = nl80211_policy,
13979                 .flags = GENL_UNS_ADMIN_PERM,
13980                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13981                                   NL80211_FLAG_NEED_RTNL,
13982         },
13983         {
13984                 .cmd = NL80211_CMD_ADD_TX_TS,
13985                 .doit = nl80211_add_tx_ts,
13986                 .policy = nl80211_policy,
13987                 .flags = GENL_UNS_ADMIN_PERM,
13988                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13989                                   NL80211_FLAG_NEED_RTNL,
13990         },
13991         {
13992                 .cmd = NL80211_CMD_DEL_TX_TS,
13993                 .doit = nl80211_del_tx_ts,
13994                 .policy = nl80211_policy,
13995                 .flags = GENL_UNS_ADMIN_PERM,
13996                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13997                                   NL80211_FLAG_NEED_RTNL,
13998         },
13999         {
14000                 .cmd = NL80211_CMD_TDLS_CHANNEL_SWITCH,
14001                 .doit = nl80211_tdls_channel_switch,
14002                 .policy = nl80211_policy,
14003                 .flags = GENL_UNS_ADMIN_PERM,
14004                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14005                                   NL80211_FLAG_NEED_RTNL,
14006         },
14007         {
14008                 .cmd = NL80211_CMD_TDLS_CANCEL_CHANNEL_SWITCH,
14009                 .doit = nl80211_tdls_cancel_channel_switch,
14010                 .policy = nl80211_policy,
14011                 .flags = GENL_UNS_ADMIN_PERM,
14012                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14013                                   NL80211_FLAG_NEED_RTNL,
14014         },
14015         {
14016                 .cmd = NL80211_CMD_SET_MULTICAST_TO_UNICAST,
14017                 .doit = nl80211_set_multicast_to_unicast,
14018                 .policy = nl80211_policy,
14019                 .flags = GENL_UNS_ADMIN_PERM,
14020                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14021                                   NL80211_FLAG_NEED_RTNL,
14022         },
14023         {
14024                 .cmd = NL80211_CMD_SET_PMK,
14025                 .doit = nl80211_set_pmk,
14026                 .policy = nl80211_policy,
14027                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14028                                   NL80211_FLAG_NEED_RTNL,
14029         },
14030         {
14031                 .cmd = NL80211_CMD_DEL_PMK,
14032                 .doit = nl80211_del_pmk,
14033                 .policy = nl80211_policy,
14034                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14035                                   NL80211_FLAG_NEED_RTNL,
14036         },
14037         {
14038                 .cmd = NL80211_CMD_EXTERNAL_AUTH,
14039                 .doit = nl80211_external_auth,
14040                 .policy = nl80211_policy,
14041                 .flags = GENL_ADMIN_PERM,
14042                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14043                                   NL80211_FLAG_NEED_RTNL,
14044         },
14045         {
14046                 .cmd = NL80211_CMD_CONTROL_PORT_FRAME,
14047                 .doit = nl80211_tx_control_port,
14048                 .policy = nl80211_policy,
14049                 .flags = GENL_UNS_ADMIN_PERM,
14050                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14051                                   NL80211_FLAG_NEED_RTNL,
14052         },
14053         {
14054                 .cmd = NL80211_CMD_GET_FTM_RESPONDER_STATS,
14055                 .doit = nl80211_get_ftm_responder_stats,
14056                 .policy = nl80211_policy,
14057                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14058                                   NL80211_FLAG_NEED_RTNL,
14059         },
14060         {
14061                 .cmd = NL80211_CMD_PEER_MEASUREMENT_START,
14062                 .doit = nl80211_pmsr_start,
14063                 .policy = nl80211_policy,
14064                 .flags = GENL_UNS_ADMIN_PERM,
14065                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14066                                   NL80211_FLAG_NEED_RTNL,
14067         },
14068 };
14069
14070 static struct genl_family nl80211_fam __ro_after_init = {
14071         .name = NL80211_GENL_NAME,      /* have users key off the name instead */
14072         .hdrsize = 0,                   /* no private header */
14073         .version = 1,                   /* no particular meaning now */
14074         .maxattr = NL80211_ATTR_MAX,
14075         .netnsok = true,
14076         .pre_doit = nl80211_pre_doit,
14077         .post_doit = nl80211_post_doit,
14078         .module = THIS_MODULE,
14079         .ops = nl80211_ops,
14080         .n_ops = ARRAY_SIZE(nl80211_ops),
14081         .mcgrps = nl80211_mcgrps,
14082         .n_mcgrps = ARRAY_SIZE(nl80211_mcgrps),
14083 };
14084
14085 /* notification functions */
14086
14087 void nl80211_notify_wiphy(struct cfg80211_registered_device *rdev,
14088                           enum nl80211_commands cmd)
14089 {
14090         struct sk_buff *msg;
14091         struct nl80211_dump_wiphy_state state = {};
14092
14093         WARN_ON(cmd != NL80211_CMD_NEW_WIPHY &&
14094                 cmd != NL80211_CMD_DEL_WIPHY);
14095
14096         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14097         if (!msg)
14098                 return;
14099
14100         if (nl80211_send_wiphy(rdev, cmd, msg, 0, 0, 0, &state) < 0) {
14101                 nlmsg_free(msg);
14102                 return;
14103         }
14104
14105         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14106                                 NL80211_MCGRP_CONFIG, GFP_KERNEL);
14107 }
14108
14109 void nl80211_notify_iface(struct cfg80211_registered_device *rdev,
14110                                 struct wireless_dev *wdev,
14111                                 enum nl80211_commands cmd)
14112 {
14113         struct sk_buff *msg;
14114
14115         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14116         if (!msg)
14117                 return;
14118
14119         if (nl80211_send_iface(msg, 0, 0, 0, rdev, wdev, cmd) < 0) {
14120                 nlmsg_free(msg);
14121                 return;
14122         }
14123
14124         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14125                                 NL80211_MCGRP_CONFIG, GFP_KERNEL);
14126 }
14127
14128 static int nl80211_add_scan_req(struct sk_buff *msg,
14129                                 struct cfg80211_registered_device *rdev)
14130 {
14131         struct cfg80211_scan_request *req = rdev->scan_req;
14132         struct nlattr *nest;
14133         int i;
14134
14135         if (WARN_ON(!req))
14136                 return 0;
14137
14138         nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS);
14139         if (!nest)
14140                 goto nla_put_failure;
14141         for (i = 0; i < req->n_ssids; i++) {
14142                 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid))
14143                         goto nla_put_failure;
14144         }
14145         nla_nest_end(msg, nest);
14146
14147         nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
14148         if (!nest)
14149                 goto nla_put_failure;
14150         for (i = 0; i < req->n_channels; i++) {
14151                 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
14152                         goto nla_put_failure;
14153         }
14154         nla_nest_end(msg, nest);
14155
14156         if (req->ie &&
14157             nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie))
14158                 goto nla_put_failure;
14159
14160         if (req->flags &&
14161             nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags))
14162                 goto nla_put_failure;
14163
14164         if (req->info.scan_start_tsf &&
14165             (nla_put_u64_64bit(msg, NL80211_ATTR_SCAN_START_TIME_TSF,
14166                                req->info.scan_start_tsf, NL80211_BSS_PAD) ||
14167              nla_put(msg, NL80211_ATTR_SCAN_START_TIME_TSF_BSSID, ETH_ALEN,
14168                      req->info.tsf_bssid)))
14169                 goto nla_put_failure;
14170
14171         return 0;
14172  nla_put_failure:
14173         return -ENOBUFS;
14174 }
14175
14176 static int nl80211_prep_scan_msg(struct sk_buff *msg,
14177                                  struct cfg80211_registered_device *rdev,
14178                                  struct wireless_dev *wdev,
14179                                  u32 portid, u32 seq, int flags,
14180                                  u32 cmd)
14181 {
14182         void *hdr;
14183
14184         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
14185         if (!hdr)
14186                 return -1;
14187
14188         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14189             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
14190                                          wdev->netdev->ifindex)) ||
14191             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
14192                               NL80211_ATTR_PAD))
14193                 goto nla_put_failure;
14194
14195         /* ignore errors and send incomplete event anyway */
14196         nl80211_add_scan_req(msg, rdev);
14197
14198         genlmsg_end(msg, hdr);
14199         return 0;
14200
14201  nla_put_failure:
14202         genlmsg_cancel(msg, hdr);
14203         return -EMSGSIZE;
14204 }
14205
14206 static int
14207 nl80211_prep_sched_scan_msg(struct sk_buff *msg,
14208                             struct cfg80211_sched_scan_request *req, u32 cmd)
14209 {
14210         void *hdr;
14211
14212         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
14213         if (!hdr)
14214                 return -1;
14215
14216         if (nla_put_u32(msg, NL80211_ATTR_WIPHY,
14217                         wiphy_to_rdev(req->wiphy)->wiphy_idx) ||
14218             nla_put_u32(msg, NL80211_ATTR_IFINDEX, req->dev->ifindex) ||
14219             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, req->reqid,
14220                               NL80211_ATTR_PAD))
14221                 goto nla_put_failure;
14222
14223         genlmsg_end(msg, hdr);
14224         return 0;
14225
14226  nla_put_failure:
14227         genlmsg_cancel(msg, hdr);
14228         return -EMSGSIZE;
14229 }
14230
14231 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
14232                              struct wireless_dev *wdev)
14233 {
14234         struct sk_buff *msg;
14235
14236         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14237         if (!msg)
14238                 return;
14239
14240         if (nl80211_prep_scan_msg(msg, rdev, wdev, 0, 0, 0,
14241                                   NL80211_CMD_TRIGGER_SCAN) < 0) {
14242                 nlmsg_free(msg);
14243                 return;
14244         }
14245
14246         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14247                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
14248 }
14249
14250 struct sk_buff *nl80211_build_scan_msg(struct cfg80211_registered_device *rdev,
14251                                        struct wireless_dev *wdev, bool aborted)
14252 {
14253         struct sk_buff *msg;
14254
14255         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14256         if (!msg)
14257                 return NULL;
14258
14259         if (nl80211_prep_scan_msg(msg, rdev, wdev, 0, 0, 0,
14260                                   aborted ? NL80211_CMD_SCAN_ABORTED :
14261                                             NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
14262                 nlmsg_free(msg);
14263                 return NULL;
14264         }
14265
14266         return msg;
14267 }
14268
14269 /* send message created by nl80211_build_scan_msg() */
14270 void nl80211_send_scan_msg(struct cfg80211_registered_device *rdev,
14271                            struct sk_buff *msg)
14272 {
14273         if (!msg)
14274                 return;
14275
14276         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14277                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
14278 }
14279
14280 void nl80211_send_sched_scan(struct cfg80211_sched_scan_request *req, u32 cmd)
14281 {
14282         struct sk_buff *msg;
14283
14284         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14285         if (!msg)
14286                 return;
14287
14288         if (nl80211_prep_sched_scan_msg(msg, req, cmd) < 0) {
14289                 nlmsg_free(msg);
14290                 return;
14291         }
14292
14293         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(req->wiphy), msg, 0,
14294                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
14295 }
14296
14297 static bool nl80211_reg_change_event_fill(struct sk_buff *msg,
14298                                           struct regulatory_request *request)
14299 {
14300         /* Userspace can always count this one always being set */
14301         if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator))
14302                 goto nla_put_failure;
14303
14304         if (request->alpha2[0] == '0' && request->alpha2[1] == '0') {
14305                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
14306                                NL80211_REGDOM_TYPE_WORLD))
14307                         goto nla_put_failure;
14308         } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') {
14309                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
14310                                NL80211_REGDOM_TYPE_CUSTOM_WORLD))
14311                         goto nla_put_failure;
14312         } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
14313                    request->intersect) {
14314                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
14315                                NL80211_REGDOM_TYPE_INTERSECTION))
14316                         goto nla_put_failure;
14317         } else {
14318                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
14319                                NL80211_REGDOM_TYPE_COUNTRY) ||
14320                     nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
14321                                    request->alpha2))
14322                         goto nla_put_failure;
14323         }
14324
14325         if (request->wiphy_idx != WIPHY_IDX_INVALID) {
14326                 struct wiphy *wiphy = wiphy_idx_to_wiphy(request->wiphy_idx);
14327
14328                 if (wiphy &&
14329                     nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx))
14330                         goto nla_put_failure;
14331
14332                 if (wiphy &&
14333                     wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
14334                     nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
14335                         goto nla_put_failure;
14336         }
14337
14338         return true;
14339
14340 nla_put_failure:
14341         return false;
14342 }
14343
14344 /*
14345  * This can happen on global regulatory changes or device specific settings
14346  * based on custom regulatory domains.
14347  */
14348 void nl80211_common_reg_change_event(enum nl80211_commands cmd_id,
14349                                      struct regulatory_request *request)
14350 {
14351         struct sk_buff *msg;
14352         void *hdr;
14353
14354         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14355         if (!msg)
14356                 return;
14357
14358         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd_id);
14359         if (!hdr) {
14360                 nlmsg_free(msg);
14361                 return;
14362         }
14363
14364         if (nl80211_reg_change_event_fill(msg, request) == false)
14365                 goto nla_put_failure;
14366
14367         genlmsg_end(msg, hdr);
14368
14369         rcu_read_lock();
14370         genlmsg_multicast_allns(&nl80211_fam, msg, 0,
14371                                 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
14372         rcu_read_unlock();
14373
14374         return;
14375
14376 nla_put_failure:
14377         nlmsg_free(msg);
14378 }
14379
14380 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
14381                                     struct net_device *netdev,
14382                                     const u8 *buf, size_t len,
14383                                     enum nl80211_commands cmd, gfp_t gfp,
14384                                     int uapsd_queues)
14385 {
14386         struct sk_buff *msg;
14387         void *hdr;
14388
14389         msg = nlmsg_new(100 + len, gfp);
14390         if (!msg)
14391                 return;
14392
14393         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
14394         if (!hdr) {
14395                 nlmsg_free(msg);
14396                 return;
14397         }
14398
14399         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14400             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
14401             nla_put(msg, NL80211_ATTR_FRAME, len, buf))
14402                 goto nla_put_failure;
14403
14404         if (uapsd_queues >= 0) {
14405                 struct nlattr *nla_wmm =
14406                         nla_nest_start(msg, NL80211_ATTR_STA_WME);
14407                 if (!nla_wmm)
14408                         goto nla_put_failure;
14409
14410                 if (nla_put_u8(msg, NL80211_STA_WME_UAPSD_QUEUES,
14411                                uapsd_queues))
14412                         goto nla_put_failure;
14413
14414                 nla_nest_end(msg, nla_wmm);
14415         }
14416
14417         genlmsg_end(msg, hdr);
14418
14419         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14420                                 NL80211_MCGRP_MLME, gfp);
14421         return;
14422
14423  nla_put_failure:
14424         nlmsg_free(msg);
14425 }
14426
14427 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
14428                           struct net_device *netdev, const u8 *buf,
14429                           size_t len, gfp_t gfp)
14430 {
14431         nl80211_send_mlme_event(rdev, netdev, buf, len,
14432                                 NL80211_CMD_AUTHENTICATE, gfp, -1);
14433 }
14434
14435 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
14436                            struct net_device *netdev, const u8 *buf,
14437                            size_t len, gfp_t gfp, int uapsd_queues)
14438 {
14439         nl80211_send_mlme_event(rdev, netdev, buf, len,
14440                                 NL80211_CMD_ASSOCIATE, gfp, uapsd_queues);
14441 }
14442
14443 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
14444                          struct net_device *netdev, const u8 *buf,
14445                          size_t len, gfp_t gfp)
14446 {
14447         nl80211_send_mlme_event(rdev, netdev, buf, len,
14448                                 NL80211_CMD_DEAUTHENTICATE, gfp, -1);
14449 }
14450
14451 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
14452                            struct net_device *netdev, const u8 *buf,
14453                            size_t len, gfp_t gfp)
14454 {
14455         nl80211_send_mlme_event(rdev, netdev, buf, len,
14456                                 NL80211_CMD_DISASSOCIATE, gfp, -1);
14457 }
14458
14459 void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf,
14460                                   size_t len)
14461 {
14462         struct wireless_dev *wdev = dev->ieee80211_ptr;
14463         struct wiphy *wiphy = wdev->wiphy;
14464         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14465         const struct ieee80211_mgmt *mgmt = (void *)buf;
14466         u32 cmd;
14467
14468         if (WARN_ON(len < 2))
14469                 return;
14470
14471         if (ieee80211_is_deauth(mgmt->frame_control))
14472                 cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE;
14473         else
14474                 cmd = NL80211_CMD_UNPROT_DISASSOCIATE;
14475
14476         trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len);
14477         nl80211_send_mlme_event(rdev, dev, buf, len, cmd, GFP_ATOMIC, -1);
14478 }
14479 EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt);
14480
14481 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
14482                                       struct net_device *netdev, int cmd,
14483                                       const u8 *addr, gfp_t gfp)
14484 {
14485         struct sk_buff *msg;
14486         void *hdr;
14487
14488         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14489         if (!msg)
14490                 return;
14491
14492         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
14493         if (!hdr) {
14494                 nlmsg_free(msg);
14495                 return;
14496         }
14497
14498         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14499             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
14500             nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
14501             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
14502                 goto nla_put_failure;
14503
14504         genlmsg_end(msg, hdr);
14505
14506         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14507                                 NL80211_MCGRP_MLME, gfp);
14508         return;
14509
14510  nla_put_failure:
14511         nlmsg_free(msg);
14512 }
14513
14514 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
14515                                struct net_device *netdev, const u8 *addr,
14516                                gfp_t gfp)
14517 {
14518         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
14519                                   addr, gfp);
14520 }
14521
14522 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
14523                                 struct net_device *netdev, const u8 *addr,
14524                                 gfp_t gfp)
14525 {
14526         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
14527                                   addr, gfp);
14528 }
14529
14530 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
14531                                  struct net_device *netdev,
14532                                  struct cfg80211_connect_resp_params *cr,
14533                                  gfp_t gfp)
14534 {
14535         struct sk_buff *msg;
14536         void *hdr;
14537
14538         msg = nlmsg_new(100 + cr->req_ie_len + cr->resp_ie_len +
14539                         cr->fils.kek_len + cr->fils.pmk_len +
14540                         (cr->fils.pmkid ? WLAN_PMKID_LEN : 0), gfp);
14541         if (!msg)
14542                 return;
14543
14544         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
14545         if (!hdr) {
14546                 nlmsg_free(msg);
14547                 return;
14548         }
14549
14550         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14551             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
14552             (cr->bssid &&
14553              nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, cr->bssid)) ||
14554             nla_put_u16(msg, NL80211_ATTR_STATUS_CODE,
14555                         cr->status < 0 ? WLAN_STATUS_UNSPECIFIED_FAILURE :
14556                         cr->status) ||
14557             (cr->status < 0 &&
14558              (nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
14559               nla_put_u32(msg, NL80211_ATTR_TIMEOUT_REASON,
14560                           cr->timeout_reason))) ||
14561             (cr->req_ie &&
14562              nla_put(msg, NL80211_ATTR_REQ_IE, cr->req_ie_len, cr->req_ie)) ||
14563             (cr->resp_ie &&
14564              nla_put(msg, NL80211_ATTR_RESP_IE, cr->resp_ie_len,
14565                      cr->resp_ie)) ||
14566             (cr->fils.update_erp_next_seq_num &&
14567              nla_put_u16(msg, NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM,
14568                          cr->fils.erp_next_seq_num)) ||
14569             (cr->status == WLAN_STATUS_SUCCESS &&
14570              ((cr->fils.kek &&
14571                nla_put(msg, NL80211_ATTR_FILS_KEK, cr->fils.kek_len,
14572                        cr->fils.kek)) ||
14573               (cr->fils.pmk &&
14574                nla_put(msg, NL80211_ATTR_PMK, cr->fils.pmk_len, cr->fils.pmk)) ||
14575               (cr->fils.pmkid &&
14576                nla_put(msg, NL80211_ATTR_PMKID, WLAN_PMKID_LEN, cr->fils.pmkid)))))
14577                 goto nla_put_failure;
14578
14579         genlmsg_end(msg, hdr);
14580
14581         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14582                                 NL80211_MCGRP_MLME, gfp);
14583         return;
14584
14585  nla_put_failure:
14586         nlmsg_free(msg);
14587 }
14588
14589 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
14590                          struct net_device *netdev,
14591                          struct cfg80211_roam_info *info, gfp_t gfp)
14592 {
14593         struct sk_buff *msg;
14594         void *hdr;
14595         const u8 *bssid = info->bss ? info->bss->bssid : info->bssid;
14596
14597         msg = nlmsg_new(100 + info->req_ie_len + info->resp_ie_len +
14598                         info->fils.kek_len + info->fils.pmk_len +
14599                         (info->fils.pmkid ? WLAN_PMKID_LEN : 0), gfp);
14600         if (!msg)
14601                 return;
14602
14603         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
14604         if (!hdr) {
14605                 nlmsg_free(msg);
14606                 return;
14607         }
14608
14609         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14610             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
14611             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid) ||
14612             (info->req_ie &&
14613              nla_put(msg, NL80211_ATTR_REQ_IE, info->req_ie_len,
14614                      info->req_ie)) ||
14615             (info->resp_ie &&
14616              nla_put(msg, NL80211_ATTR_RESP_IE, info->resp_ie_len,
14617                      info->resp_ie)) ||
14618             (info->fils.update_erp_next_seq_num &&
14619              nla_put_u16(msg, NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM,
14620                          info->fils.erp_next_seq_num)) ||
14621             (info->fils.kek &&
14622              nla_put(msg, NL80211_ATTR_FILS_KEK, info->fils.kek_len,
14623                      info->fils.kek)) ||
14624             (info->fils.pmk &&
14625              nla_put(msg, NL80211_ATTR_PMK, info->fils.pmk_len, info->fils.pmk)) ||
14626             (info->fils.pmkid &&
14627              nla_put(msg, NL80211_ATTR_PMKID, WLAN_PMKID_LEN, info->fils.pmkid)))
14628                 goto nla_put_failure;
14629
14630         genlmsg_end(msg, hdr);
14631
14632         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14633                                 NL80211_MCGRP_MLME, gfp);
14634         return;
14635
14636  nla_put_failure:
14637         nlmsg_free(msg);
14638 }
14639
14640 void nl80211_send_port_authorized(struct cfg80211_registered_device *rdev,
14641                                   struct net_device *netdev, const u8 *bssid)
14642 {
14643         struct sk_buff *msg;
14644         void *hdr;
14645
14646         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14647         if (!msg)
14648                 return;
14649
14650         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PORT_AUTHORIZED);
14651         if (!hdr) {
14652                 nlmsg_free(msg);
14653                 return;
14654         }
14655
14656         if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
14657                 goto nla_put_failure;
14658
14659         genlmsg_end(msg, hdr);
14660
14661         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14662                                 NL80211_MCGRP_MLME, GFP_KERNEL);
14663         return;
14664
14665  nla_put_failure:
14666         nlmsg_free(msg);
14667 }
14668
14669 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
14670                                struct net_device *netdev, u16 reason,
14671                                const u8 *ie, size_t ie_len, bool from_ap)
14672 {
14673         struct sk_buff *msg;
14674         void *hdr;
14675
14676         msg = nlmsg_new(100 + ie_len, GFP_KERNEL);
14677         if (!msg)
14678                 return;
14679
14680         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
14681         if (!hdr) {
14682                 nlmsg_free(msg);
14683                 return;
14684         }
14685
14686         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14687             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
14688             (reason &&
14689              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) ||
14690             (from_ap &&
14691              nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) ||
14692             (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie)))
14693                 goto nla_put_failure;
14694
14695         genlmsg_end(msg, hdr);
14696
14697         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14698                                 NL80211_MCGRP_MLME, GFP_KERNEL);
14699         return;
14700
14701  nla_put_failure:
14702         nlmsg_free(msg);
14703 }
14704
14705 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
14706                              struct net_device *netdev, const u8 *bssid,
14707                              gfp_t gfp)
14708 {
14709         struct sk_buff *msg;
14710         void *hdr;
14711
14712         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14713         if (!msg)
14714                 return;
14715
14716         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
14717         if (!hdr) {
14718                 nlmsg_free(msg);
14719                 return;
14720         }
14721
14722         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14723             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
14724             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
14725                 goto nla_put_failure;
14726
14727         genlmsg_end(msg, hdr);
14728
14729         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14730                                 NL80211_MCGRP_MLME, gfp);
14731         return;
14732
14733  nla_put_failure:
14734         nlmsg_free(msg);
14735 }
14736
14737 void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr,
14738                                         const u8* ie, u8 ie_len, gfp_t gfp)
14739 {
14740         struct wireless_dev *wdev = dev->ieee80211_ptr;
14741         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
14742         struct sk_buff *msg;
14743         void *hdr;
14744
14745         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT))
14746                 return;
14747
14748         trace_cfg80211_notify_new_peer_candidate(dev, addr);
14749
14750         msg = nlmsg_new(100 + ie_len, gfp);
14751         if (!msg)
14752                 return;
14753
14754         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
14755         if (!hdr) {
14756                 nlmsg_free(msg);
14757                 return;
14758         }
14759
14760         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14761             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
14762             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
14763             (ie_len && ie &&
14764              nla_put(msg, NL80211_ATTR_IE, ie_len , ie)))
14765                 goto nla_put_failure;
14766
14767         genlmsg_end(msg, hdr);
14768
14769         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14770                                 NL80211_MCGRP_MLME, gfp);
14771         return;
14772
14773  nla_put_failure:
14774         nlmsg_free(msg);
14775 }
14776 EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate);
14777
14778 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
14779                                  struct net_device *netdev, const u8 *addr,
14780                                  enum nl80211_key_type key_type, int key_id,
14781                                  const u8 *tsc, gfp_t gfp)
14782 {
14783         struct sk_buff *msg;
14784         void *hdr;
14785
14786         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14787         if (!msg)
14788                 return;
14789
14790         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
14791         if (!hdr) {
14792                 nlmsg_free(msg);
14793                 return;
14794         }
14795
14796         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14797             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
14798             (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
14799             nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) ||
14800             (key_id != -1 &&
14801              nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) ||
14802             (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc)))
14803                 goto nla_put_failure;
14804
14805         genlmsg_end(msg, hdr);
14806
14807         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14808                                 NL80211_MCGRP_MLME, gfp);
14809         return;
14810
14811  nla_put_failure:
14812         nlmsg_free(msg);
14813 }
14814
14815 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
14816                                     struct ieee80211_channel *channel_before,
14817                                     struct ieee80211_channel *channel_after)
14818 {
14819         struct sk_buff *msg;
14820         void *hdr;
14821         struct nlattr *nl_freq;
14822
14823         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
14824         if (!msg)
14825                 return;
14826
14827         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
14828         if (!hdr) {
14829                 nlmsg_free(msg);
14830                 return;
14831         }
14832
14833         /*
14834          * Since we are applying the beacon hint to a wiphy we know its
14835          * wiphy_idx is valid
14836          */
14837         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
14838                 goto nla_put_failure;
14839
14840         /* Before */
14841         nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE);
14842         if (!nl_freq)
14843                 goto nla_put_failure;
14844
14845         if (nl80211_msg_put_channel(msg, wiphy, channel_before, false))
14846                 goto nla_put_failure;
14847         nla_nest_end(msg, nl_freq);
14848
14849         /* After */
14850         nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER);
14851         if (!nl_freq)
14852                 goto nla_put_failure;
14853
14854         if (nl80211_msg_put_channel(msg, wiphy, channel_after, false))
14855                 goto nla_put_failure;
14856         nla_nest_end(msg, nl_freq);
14857
14858         genlmsg_end(msg, hdr);
14859
14860         rcu_read_lock();
14861         genlmsg_multicast_allns(&nl80211_fam, msg, 0,
14862                                 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
14863         rcu_read_unlock();
14864
14865         return;
14866
14867 nla_put_failure:
14868         nlmsg_free(msg);
14869 }
14870
14871 static void nl80211_send_remain_on_chan_event(
14872         int cmd, struct cfg80211_registered_device *rdev,
14873         struct wireless_dev *wdev, u64 cookie,
14874         struct ieee80211_channel *chan,
14875         unsigned int duration, gfp_t gfp)
14876 {
14877         struct sk_buff *msg;
14878         void *hdr;
14879
14880         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14881         if (!msg)
14882                 return;
14883
14884         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
14885         if (!hdr) {
14886                 nlmsg_free(msg);
14887                 return;
14888         }
14889
14890         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14891             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
14892                                          wdev->netdev->ifindex)) ||
14893             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
14894                               NL80211_ATTR_PAD) ||
14895             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) ||
14896             nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
14897                         NL80211_CHAN_NO_HT) ||
14898             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
14899                               NL80211_ATTR_PAD))
14900                 goto nla_put_failure;
14901
14902         if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL &&
14903             nla_put_u32(msg, NL80211_ATTR_DURATION, duration))
14904                 goto nla_put_failure;
14905
14906         genlmsg_end(msg, hdr);
14907
14908         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14909                                 NL80211_MCGRP_MLME, gfp);
14910         return;
14911
14912  nla_put_failure:
14913         nlmsg_free(msg);
14914 }
14915
14916 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie,
14917                                struct ieee80211_channel *chan,
14918                                unsigned int duration, gfp_t gfp)
14919 {
14920         struct wiphy *wiphy = wdev->wiphy;
14921         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14922
14923         trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration);
14924         nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
14925                                           rdev, wdev, cookie, chan,
14926                                           duration, gfp);
14927 }
14928 EXPORT_SYMBOL(cfg80211_ready_on_channel);
14929
14930 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie,
14931                                         struct ieee80211_channel *chan,
14932                                         gfp_t gfp)
14933 {
14934         struct wiphy *wiphy = wdev->wiphy;
14935         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14936
14937         trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan);
14938         nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
14939                                           rdev, wdev, cookie, chan, 0, gfp);
14940 }
14941 EXPORT_SYMBOL(cfg80211_remain_on_channel_expired);
14942
14943 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr,
14944                       struct station_info *sinfo, gfp_t gfp)
14945 {
14946         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
14947         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14948         struct sk_buff *msg;
14949
14950         trace_cfg80211_new_sta(dev, mac_addr, sinfo);
14951
14952         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14953         if (!msg)
14954                 return;
14955
14956         if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION, 0, 0, 0,
14957                                  rdev, dev, mac_addr, sinfo) < 0) {
14958                 nlmsg_free(msg);
14959                 return;
14960         }
14961
14962         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14963                                 NL80211_MCGRP_MLME, gfp);
14964 }
14965 EXPORT_SYMBOL(cfg80211_new_sta);
14966
14967 void cfg80211_del_sta_sinfo(struct net_device *dev, const u8 *mac_addr,
14968                             struct station_info *sinfo, gfp_t gfp)
14969 {
14970         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
14971         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14972         struct sk_buff *msg;
14973         struct station_info empty_sinfo = {};
14974
14975         if (!sinfo)
14976                 sinfo = &empty_sinfo;
14977
14978         trace_cfg80211_del_sta(dev, mac_addr);
14979
14980         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14981         if (!msg) {
14982                 cfg80211_sinfo_release_content(sinfo);
14983                 return;
14984         }
14985
14986         if (nl80211_send_station(msg, NL80211_CMD_DEL_STATION, 0, 0, 0,
14987                                  rdev, dev, mac_addr, sinfo) < 0) {
14988                 nlmsg_free(msg);
14989                 return;
14990         }
14991
14992         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14993                                 NL80211_MCGRP_MLME, gfp);
14994 }
14995 EXPORT_SYMBOL(cfg80211_del_sta_sinfo);
14996
14997 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr,
14998                           enum nl80211_connect_failed_reason reason,
14999                           gfp_t gfp)
15000 {
15001         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
15002         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15003         struct sk_buff *msg;
15004         void *hdr;
15005
15006         msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
15007         if (!msg)
15008                 return;
15009
15010         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED);
15011         if (!hdr) {
15012                 nlmsg_free(msg);
15013                 return;
15014         }
15015
15016         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
15017             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
15018             nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason))
15019                 goto nla_put_failure;
15020
15021         genlmsg_end(msg, hdr);
15022
15023         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15024                                 NL80211_MCGRP_MLME, gfp);
15025         return;
15026
15027  nla_put_failure:
15028         nlmsg_free(msg);
15029 }
15030 EXPORT_SYMBOL(cfg80211_conn_failed);
15031
15032 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
15033                                        const u8 *addr, gfp_t gfp)
15034 {
15035         struct wireless_dev *wdev = dev->ieee80211_ptr;
15036         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
15037         struct sk_buff *msg;
15038         void *hdr;
15039         u32 nlportid = READ_ONCE(wdev->ap_unexpected_nlportid);
15040
15041         if (!nlportid)
15042                 return false;
15043
15044         msg = nlmsg_new(100, gfp);
15045         if (!msg)
15046                 return true;
15047
15048         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
15049         if (!hdr) {
15050                 nlmsg_free(msg);
15051                 return true;
15052         }
15053
15054         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15055             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
15056             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
15057                 goto nla_put_failure;
15058
15059         genlmsg_end(msg, hdr);
15060         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
15061         return true;
15062
15063  nla_put_failure:
15064         nlmsg_free(msg);
15065         return true;
15066 }
15067
15068 bool cfg80211_rx_spurious_frame(struct net_device *dev,
15069                                 const u8 *addr, gfp_t gfp)
15070 {
15071         struct wireless_dev *wdev = dev->ieee80211_ptr;
15072         bool ret;
15073
15074         trace_cfg80211_rx_spurious_frame(dev, addr);
15075
15076         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
15077                     wdev->iftype != NL80211_IFTYPE_P2P_GO)) {
15078                 trace_cfg80211_return_bool(false);
15079                 return false;
15080         }
15081         ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
15082                                          addr, gfp);
15083         trace_cfg80211_return_bool(ret);
15084         return ret;
15085 }
15086 EXPORT_SYMBOL(cfg80211_rx_spurious_frame);
15087
15088 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev,
15089                                         const u8 *addr, gfp_t gfp)
15090 {
15091         struct wireless_dev *wdev = dev->ieee80211_ptr;
15092         bool ret;
15093
15094         trace_cfg80211_rx_unexpected_4addr_frame(dev, addr);
15095
15096         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
15097                     wdev->iftype != NL80211_IFTYPE_P2P_GO &&
15098                     wdev->iftype != NL80211_IFTYPE_AP_VLAN)) {
15099                 trace_cfg80211_return_bool(false);
15100                 return false;
15101         }
15102         ret = __nl80211_unexpected_frame(dev,
15103                                          NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
15104                                          addr, gfp);
15105         trace_cfg80211_return_bool(ret);
15106         return ret;
15107 }
15108 EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame);
15109
15110 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
15111                       struct wireless_dev *wdev, u32 nlportid,
15112                       int freq, int sig_dbm,
15113                       const u8 *buf, size_t len, u32 flags, gfp_t gfp)
15114 {
15115         struct net_device *netdev = wdev->netdev;
15116         struct sk_buff *msg;
15117         void *hdr;
15118
15119         msg = nlmsg_new(100 + len, gfp);
15120         if (!msg)
15121                 return -ENOMEM;
15122
15123         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
15124         if (!hdr) {
15125                 nlmsg_free(msg);
15126                 return -ENOMEM;
15127         }
15128
15129         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15130             (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
15131                                         netdev->ifindex)) ||
15132             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
15133                               NL80211_ATTR_PAD) ||
15134             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) ||
15135             (sig_dbm &&
15136              nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
15137             nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
15138             (flags &&
15139              nla_put_u32(msg, NL80211_ATTR_RXMGMT_FLAGS, flags)))
15140                 goto nla_put_failure;
15141
15142         genlmsg_end(msg, hdr);
15143
15144         return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
15145
15146  nla_put_failure:
15147         nlmsg_free(msg);
15148         return -ENOBUFS;
15149 }
15150
15151 void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie,
15152                              const u8 *buf, size_t len, bool ack, gfp_t gfp)
15153 {
15154         struct wiphy *wiphy = wdev->wiphy;
15155         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15156         struct net_device *netdev = wdev->netdev;
15157         struct sk_buff *msg;
15158         void *hdr;
15159
15160         trace_cfg80211_mgmt_tx_status(wdev, cookie, ack);
15161
15162         msg = nlmsg_new(100 + len, gfp);
15163         if (!msg)
15164                 return;
15165
15166         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS);
15167         if (!hdr) {
15168                 nlmsg_free(msg);
15169                 return;
15170         }
15171
15172         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15173             (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
15174                                    netdev->ifindex)) ||
15175             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
15176                               NL80211_ATTR_PAD) ||
15177             nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
15178             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
15179                               NL80211_ATTR_PAD) ||
15180             (ack && nla_put_flag(msg, NL80211_ATTR_ACK)))
15181                 goto nla_put_failure;
15182
15183         genlmsg_end(msg, hdr);
15184
15185         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15186                                 NL80211_MCGRP_MLME, gfp);
15187         return;
15188
15189  nla_put_failure:
15190         nlmsg_free(msg);
15191 }
15192 EXPORT_SYMBOL(cfg80211_mgmt_tx_status);
15193
15194 static int __nl80211_rx_control_port(struct net_device *dev,
15195                                      struct sk_buff *skb,
15196                                      bool unencrypted, gfp_t gfp)
15197 {
15198         struct wireless_dev *wdev = dev->ieee80211_ptr;
15199         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
15200         struct ethhdr *ehdr = eth_hdr(skb);
15201         const u8 *addr = ehdr->h_source;
15202         u16 proto = be16_to_cpu(skb->protocol);
15203         struct sk_buff *msg;
15204         void *hdr;
15205         struct nlattr *frame;
15206
15207         u32 nlportid = READ_ONCE(wdev->conn_owner_nlportid);
15208
15209         if (!nlportid)
15210                 return -ENOENT;
15211
15212         msg = nlmsg_new(100 + skb->len, gfp);
15213         if (!msg)
15214                 return -ENOMEM;
15215
15216         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONTROL_PORT_FRAME);
15217         if (!hdr) {
15218                 nlmsg_free(msg);
15219                 return -ENOBUFS;
15220         }
15221
15222         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15223             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
15224             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
15225                               NL80211_ATTR_PAD) ||
15226             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
15227             nla_put_u16(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE, proto) ||
15228             (unencrypted && nla_put_flag(msg,
15229                                          NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT)))
15230                 goto nla_put_failure;
15231
15232         frame = nla_reserve(msg, NL80211_ATTR_FRAME, skb->len);
15233         if (!frame)
15234                 goto nla_put_failure;
15235
15236         skb_copy_bits(skb, 0, nla_data(frame), skb->len);
15237         genlmsg_end(msg, hdr);
15238
15239         return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
15240
15241  nla_put_failure:
15242         nlmsg_free(msg);
15243         return -ENOBUFS;
15244 }
15245
15246 bool cfg80211_rx_control_port(struct net_device *dev,
15247                               struct sk_buff *skb, bool unencrypted)
15248 {
15249         int ret;
15250
15251         trace_cfg80211_rx_control_port(dev, skb, unencrypted);
15252         ret = __nl80211_rx_control_port(dev, skb, unencrypted, GFP_ATOMIC);
15253         trace_cfg80211_return_bool(ret == 0);
15254         return ret == 0;
15255 }
15256 EXPORT_SYMBOL(cfg80211_rx_control_port);
15257
15258 static struct sk_buff *cfg80211_prepare_cqm(struct net_device *dev,
15259                                             const char *mac, gfp_t gfp)
15260 {
15261         struct wireless_dev *wdev = dev->ieee80211_ptr;
15262         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
15263         struct sk_buff *msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15264         void **cb;
15265
15266         if (!msg)
15267                 return NULL;
15268
15269         cb = (void **)msg->cb;
15270
15271         cb[0] = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
15272         if (!cb[0]) {
15273                 nlmsg_free(msg);
15274                 return NULL;
15275         }
15276
15277         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15278             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
15279                 goto nla_put_failure;
15280
15281         if (mac && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
15282                 goto nla_put_failure;
15283
15284         cb[1] = nla_nest_start(msg, NL80211_ATTR_CQM);
15285         if (!cb[1])
15286                 goto nla_put_failure;
15287
15288         cb[2] = rdev;
15289
15290         return msg;
15291  nla_put_failure:
15292         nlmsg_free(msg);
15293         return NULL;
15294 }
15295
15296 static void cfg80211_send_cqm(struct sk_buff *msg, gfp_t gfp)
15297 {
15298         void **cb = (void **)msg->cb;
15299         struct cfg80211_registered_device *rdev = cb[2];
15300
15301         nla_nest_end(msg, cb[1]);
15302         genlmsg_end(msg, cb[0]);
15303
15304         memset(msg->cb, 0, sizeof(msg->cb));
15305
15306         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15307                                 NL80211_MCGRP_MLME, gfp);
15308 }
15309
15310 void cfg80211_cqm_rssi_notify(struct net_device *dev,
15311                               enum nl80211_cqm_rssi_threshold_event rssi_event,
15312                               s32 rssi_level, gfp_t gfp)
15313 {
15314         struct sk_buff *msg;
15315         struct wireless_dev *wdev = dev->ieee80211_ptr;
15316         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
15317
15318         trace_cfg80211_cqm_rssi_notify(dev, rssi_event, rssi_level);
15319
15320         if (WARN_ON(rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW &&
15321                     rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH))
15322                 return;
15323
15324         if (wdev->cqm_config) {
15325                 wdev->cqm_config->last_rssi_event_value = rssi_level;
15326
15327                 cfg80211_cqm_rssi_update(rdev, dev);
15328
15329                 if (rssi_level == 0)
15330                         rssi_level = wdev->cqm_config->last_rssi_event_value;
15331         }
15332
15333         msg = cfg80211_prepare_cqm(dev, NULL, gfp);
15334         if (!msg)
15335                 return;
15336
15337         if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
15338                         rssi_event))
15339                 goto nla_put_failure;
15340
15341         if (rssi_level && nla_put_s32(msg, NL80211_ATTR_CQM_RSSI_LEVEL,
15342                                       rssi_level))
15343                 goto nla_put_failure;
15344
15345         cfg80211_send_cqm(msg, gfp);
15346
15347         return;
15348
15349  nla_put_failure:
15350         nlmsg_free(msg);
15351 }
15352 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify);
15353
15354 void cfg80211_cqm_txe_notify(struct net_device *dev,
15355                              const u8 *peer, u32 num_packets,
15356                              u32 rate, u32 intvl, gfp_t gfp)
15357 {
15358         struct sk_buff *msg;
15359
15360         msg = cfg80211_prepare_cqm(dev, peer, gfp);
15361         if (!msg)
15362                 return;
15363
15364         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets))
15365                 goto nla_put_failure;
15366
15367         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate))
15368                 goto nla_put_failure;
15369
15370         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl))
15371                 goto nla_put_failure;
15372
15373         cfg80211_send_cqm(msg, gfp);
15374         return;
15375
15376  nla_put_failure:
15377         nlmsg_free(msg);
15378 }
15379 EXPORT_SYMBOL(cfg80211_cqm_txe_notify);
15380
15381 void cfg80211_cqm_pktloss_notify(struct net_device *dev,
15382                                  const u8 *peer, u32 num_packets, gfp_t gfp)
15383 {
15384         struct sk_buff *msg;
15385
15386         trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets);
15387
15388         msg = cfg80211_prepare_cqm(dev, peer, gfp);
15389         if (!msg)
15390                 return;
15391
15392         if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets))
15393                 goto nla_put_failure;
15394
15395         cfg80211_send_cqm(msg, gfp);
15396         return;
15397
15398  nla_put_failure:
15399         nlmsg_free(msg);
15400 }
15401 EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify);
15402
15403 void cfg80211_cqm_beacon_loss_notify(struct net_device *dev, gfp_t gfp)
15404 {
15405         struct sk_buff *msg;
15406
15407         msg = cfg80211_prepare_cqm(dev, NULL, gfp);
15408         if (!msg)
15409                 return;
15410
15411         if (nla_put_flag(msg, NL80211_ATTR_CQM_BEACON_LOSS_EVENT))
15412                 goto nla_put_failure;
15413
15414         cfg80211_send_cqm(msg, gfp);
15415         return;
15416
15417  nla_put_failure:
15418         nlmsg_free(msg);
15419 }
15420 EXPORT_SYMBOL(cfg80211_cqm_beacon_loss_notify);
15421
15422 static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
15423                                      struct net_device *netdev, const u8 *bssid,
15424                                      const u8 *replay_ctr, gfp_t gfp)
15425 {
15426         struct sk_buff *msg;
15427         struct nlattr *rekey_attr;
15428         void *hdr;
15429
15430         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15431         if (!msg)
15432                 return;
15433
15434         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
15435         if (!hdr) {
15436                 nlmsg_free(msg);
15437                 return;
15438         }
15439
15440         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15441             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15442             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
15443                 goto nla_put_failure;
15444
15445         rekey_attr = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA);
15446         if (!rekey_attr)
15447                 goto nla_put_failure;
15448
15449         if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR,
15450                     NL80211_REPLAY_CTR_LEN, replay_ctr))
15451                 goto nla_put_failure;
15452
15453         nla_nest_end(msg, rekey_attr);
15454
15455         genlmsg_end(msg, hdr);
15456
15457         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15458                                 NL80211_MCGRP_MLME, gfp);
15459         return;
15460
15461  nla_put_failure:
15462         nlmsg_free(msg);
15463 }
15464
15465 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid,
15466                                const u8 *replay_ctr, gfp_t gfp)
15467 {
15468         struct wireless_dev *wdev = dev->ieee80211_ptr;
15469         struct wiphy *wiphy = wdev->wiphy;
15470         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15471
15472         trace_cfg80211_gtk_rekey_notify(dev, bssid);
15473         nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp);
15474 }
15475 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify);
15476
15477 static void
15478 nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
15479                                struct net_device *netdev, int index,
15480                                const u8 *bssid, bool preauth, gfp_t gfp)
15481 {
15482         struct sk_buff *msg;
15483         struct nlattr *attr;
15484         void *hdr;
15485
15486         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15487         if (!msg)
15488                 return;
15489
15490         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
15491         if (!hdr) {
15492                 nlmsg_free(msg);
15493                 return;
15494         }
15495
15496         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15497             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
15498                 goto nla_put_failure;
15499
15500         attr = nla_nest_start(msg, NL80211_ATTR_PMKSA_CANDIDATE);
15501         if (!attr)
15502                 goto nla_put_failure;
15503
15504         if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) ||
15505             nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) ||
15506             (preauth &&
15507              nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH)))
15508                 goto nla_put_failure;
15509
15510         nla_nest_end(msg, attr);
15511
15512         genlmsg_end(msg, hdr);
15513
15514         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15515                                 NL80211_MCGRP_MLME, gfp);
15516         return;
15517
15518  nla_put_failure:
15519         nlmsg_free(msg);
15520 }
15521
15522 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index,
15523                                      const u8 *bssid, bool preauth, gfp_t gfp)
15524 {
15525         struct wireless_dev *wdev = dev->ieee80211_ptr;
15526         struct wiphy *wiphy = wdev->wiphy;
15527         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15528
15529         trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth);
15530         nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp);
15531 }
15532 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify);
15533
15534 static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev,
15535                                      struct net_device *netdev,
15536                                      struct cfg80211_chan_def *chandef,
15537                                      gfp_t gfp,
15538                                      enum nl80211_commands notif,
15539                                      u8 count)
15540 {
15541         struct sk_buff *msg;
15542         void *hdr;
15543
15544         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15545         if (!msg)
15546                 return;
15547
15548         hdr = nl80211hdr_put(msg, 0, 0, 0, notif);
15549         if (!hdr) {
15550                 nlmsg_free(msg);
15551                 return;
15552         }
15553
15554         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
15555                 goto nla_put_failure;
15556
15557         if (nl80211_send_chandef(msg, chandef))
15558                 goto nla_put_failure;
15559
15560         if ((notif == NL80211_CMD_CH_SWITCH_STARTED_NOTIFY) &&
15561             (nla_put_u32(msg, NL80211_ATTR_CH_SWITCH_COUNT, count)))
15562                         goto nla_put_failure;
15563
15564         genlmsg_end(msg, hdr);
15565
15566         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15567                                 NL80211_MCGRP_MLME, gfp);
15568         return;
15569
15570  nla_put_failure:
15571         nlmsg_free(msg);
15572 }
15573
15574 void cfg80211_ch_switch_notify(struct net_device *dev,
15575                                struct cfg80211_chan_def *chandef)
15576 {
15577         struct wireless_dev *wdev = dev->ieee80211_ptr;
15578         struct wiphy *wiphy = wdev->wiphy;
15579         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15580
15581         ASSERT_WDEV_LOCK(wdev);
15582
15583         trace_cfg80211_ch_switch_notify(dev, chandef);
15584
15585         wdev->chandef = *chandef;
15586         wdev->preset_chandef = *chandef;
15587         nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
15588                                  NL80211_CMD_CH_SWITCH_NOTIFY, 0);
15589 }
15590 EXPORT_SYMBOL(cfg80211_ch_switch_notify);
15591
15592 void cfg80211_ch_switch_started_notify(struct net_device *dev,
15593                                        struct cfg80211_chan_def *chandef,
15594                                        u8 count)
15595 {
15596         struct wireless_dev *wdev = dev->ieee80211_ptr;
15597         struct wiphy *wiphy = wdev->wiphy;
15598         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15599
15600         trace_cfg80211_ch_switch_started_notify(dev, chandef);
15601
15602         nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
15603                                  NL80211_CMD_CH_SWITCH_STARTED_NOTIFY, count);
15604 }
15605 EXPORT_SYMBOL(cfg80211_ch_switch_started_notify);
15606
15607 void
15608 nl80211_radar_notify(struct cfg80211_registered_device *rdev,
15609                      const struct cfg80211_chan_def *chandef,
15610                      enum nl80211_radar_event event,
15611                      struct net_device *netdev, gfp_t gfp)
15612 {
15613         struct sk_buff *msg;
15614         void *hdr;
15615
15616         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15617         if (!msg)
15618                 return;
15619
15620         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT);
15621         if (!hdr) {
15622                 nlmsg_free(msg);
15623                 return;
15624         }
15625
15626         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
15627                 goto nla_put_failure;
15628
15629         /* NOP and radar events don't need a netdev parameter */
15630         if (netdev) {
15631                 struct wireless_dev *wdev = netdev->ieee80211_ptr;
15632
15633                 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15634                     nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
15635                                       NL80211_ATTR_PAD))
15636                         goto nla_put_failure;
15637         }
15638
15639         if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event))
15640                 goto nla_put_failure;
15641
15642         if (nl80211_send_chandef(msg, chandef))
15643                 goto nla_put_failure;
15644
15645         genlmsg_end(msg, hdr);
15646
15647         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15648                                 NL80211_MCGRP_MLME, gfp);
15649         return;
15650
15651  nla_put_failure:
15652         nlmsg_free(msg);
15653 }
15654
15655 void cfg80211_sta_opmode_change_notify(struct net_device *dev, const u8 *mac,
15656                                        struct sta_opmode_info *sta_opmode,
15657                                        gfp_t gfp)
15658 {
15659         struct sk_buff *msg;
15660         struct wireless_dev *wdev = dev->ieee80211_ptr;
15661         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
15662         void *hdr;
15663
15664         if (WARN_ON(!mac))
15665                 return;
15666
15667         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15668         if (!msg)
15669                 return;
15670
15671         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STA_OPMODE_CHANGED);
15672         if (!hdr) {
15673                 nlmsg_free(msg);
15674                 return;
15675         }
15676
15677         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
15678                 goto nla_put_failure;
15679
15680         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
15681                 goto nla_put_failure;
15682
15683         if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
15684                 goto nla_put_failure;
15685
15686         if ((sta_opmode->changed & STA_OPMODE_SMPS_MODE_CHANGED) &&
15687             nla_put_u8(msg, NL80211_ATTR_SMPS_MODE, sta_opmode->smps_mode))
15688                 goto nla_put_failure;
15689
15690         if ((sta_opmode->changed & STA_OPMODE_MAX_BW_CHANGED) &&
15691             nla_put_u8(msg, NL80211_ATTR_CHANNEL_WIDTH, sta_opmode->bw))
15692                 goto nla_put_failure;
15693
15694         if ((sta_opmode->changed & STA_OPMODE_N_SS_CHANGED) &&
15695             nla_put_u8(msg, NL80211_ATTR_NSS, sta_opmode->rx_nss))
15696                 goto nla_put_failure;
15697
15698         genlmsg_end(msg, hdr);
15699
15700         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15701                                 NL80211_MCGRP_MLME, gfp);
15702
15703         return;
15704
15705 nla_put_failure:
15706         nlmsg_free(msg);
15707 }
15708 EXPORT_SYMBOL(cfg80211_sta_opmode_change_notify);
15709
15710 void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
15711                            u64 cookie, bool acked, s32 ack_signal,
15712                            bool is_valid_ack_signal, gfp_t gfp)
15713 {
15714         struct wireless_dev *wdev = dev->ieee80211_ptr;
15715         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
15716         struct sk_buff *msg;
15717         void *hdr;
15718
15719         trace_cfg80211_probe_status(dev, addr, cookie, acked);
15720
15721         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15722
15723         if (!msg)
15724                 return;
15725
15726         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT);
15727         if (!hdr) {
15728                 nlmsg_free(msg);
15729                 return;
15730         }
15731
15732         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15733             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
15734             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
15735             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
15736                               NL80211_ATTR_PAD) ||
15737             (acked && nla_put_flag(msg, NL80211_ATTR_ACK)) ||
15738             (is_valid_ack_signal && nla_put_s32(msg, NL80211_ATTR_ACK_SIGNAL,
15739                                                 ack_signal)))
15740                 goto nla_put_failure;
15741
15742         genlmsg_end(msg, hdr);
15743
15744         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15745                                 NL80211_MCGRP_MLME, gfp);
15746         return;
15747
15748  nla_put_failure:
15749         nlmsg_free(msg);
15750 }
15751 EXPORT_SYMBOL(cfg80211_probe_status);
15752
15753 void cfg80211_report_obss_beacon(struct wiphy *wiphy,
15754                                  const u8 *frame, size_t len,
15755                                  int freq, int sig_dbm)
15756 {
15757         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15758         struct sk_buff *msg;
15759         void *hdr;
15760         struct cfg80211_beacon_registration *reg;
15761
15762         trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm);
15763
15764         spin_lock_bh(&rdev->beacon_registrations_lock);
15765         list_for_each_entry(reg, &rdev->beacon_registrations, list) {
15766                 msg = nlmsg_new(len + 100, GFP_ATOMIC);
15767                 if (!msg) {
15768                         spin_unlock_bh(&rdev->beacon_registrations_lock);
15769                         return;
15770                 }
15771
15772                 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
15773                 if (!hdr)
15774                         goto nla_put_failure;
15775
15776                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15777                     (freq &&
15778                      nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq)) ||
15779                     (sig_dbm &&
15780                      nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
15781                     nla_put(msg, NL80211_ATTR_FRAME, len, frame))
15782                         goto nla_put_failure;
15783
15784                 genlmsg_end(msg, hdr);
15785
15786                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid);
15787         }
15788         spin_unlock_bh(&rdev->beacon_registrations_lock);
15789         return;
15790
15791  nla_put_failure:
15792         spin_unlock_bh(&rdev->beacon_registrations_lock);
15793         nlmsg_free(msg);
15794 }
15795 EXPORT_SYMBOL(cfg80211_report_obss_beacon);
15796
15797 #ifdef CONFIG_PM
15798 static int cfg80211_net_detect_results(struct sk_buff *msg,
15799                                        struct cfg80211_wowlan_wakeup *wakeup)
15800 {
15801         struct cfg80211_wowlan_nd_info *nd = wakeup->net_detect;
15802         struct nlattr *nl_results, *nl_match, *nl_freqs;
15803         int i, j;
15804
15805         nl_results = nla_nest_start(
15806                 msg, NL80211_WOWLAN_TRIG_NET_DETECT_RESULTS);
15807         if (!nl_results)
15808                 return -EMSGSIZE;
15809
15810         for (i = 0; i < nd->n_matches; i++) {
15811                 struct cfg80211_wowlan_nd_match *match = nd->matches[i];
15812
15813                 nl_match = nla_nest_start(msg, i);
15814                 if (!nl_match)
15815                         break;
15816
15817                 /* The SSID attribute is optional in nl80211, but for
15818                  * simplicity reasons it's always present in the
15819                  * cfg80211 structure.  If a driver can't pass the
15820                  * SSID, that needs to be changed.  A zero length SSID
15821                  * is still a valid SSID (wildcard), so it cannot be
15822                  * used for this purpose.
15823                  */
15824                 if (nla_put(msg, NL80211_ATTR_SSID, match->ssid.ssid_len,
15825                             match->ssid.ssid)) {
15826                         nla_nest_cancel(msg, nl_match);
15827                         goto out;
15828                 }
15829
15830                 if (match->n_channels) {
15831                         nl_freqs = nla_nest_start(
15832                                 msg, NL80211_ATTR_SCAN_FREQUENCIES);
15833                         if (!nl_freqs) {
15834                                 nla_nest_cancel(msg, nl_match);
15835                                 goto out;
15836                         }
15837
15838                         for (j = 0; j < match->n_channels; j++) {
15839                                 if (nla_put_u32(msg, j, match->channels[j])) {
15840                                         nla_nest_cancel(msg, nl_freqs);
15841                                         nla_nest_cancel(msg, nl_match);
15842                                         goto out;
15843                                 }
15844                         }
15845
15846                         nla_nest_end(msg, nl_freqs);
15847                 }
15848
15849                 nla_nest_end(msg, nl_match);
15850         }
15851
15852 out:
15853         nla_nest_end(msg, nl_results);
15854         return 0;
15855 }
15856
15857 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev,
15858                                    struct cfg80211_wowlan_wakeup *wakeup,
15859                                    gfp_t gfp)
15860 {
15861         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
15862         struct sk_buff *msg;
15863         void *hdr;
15864         int size = 200;
15865
15866         trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup);
15867
15868         if (wakeup)
15869                 size += wakeup->packet_present_len;
15870
15871         msg = nlmsg_new(size, gfp);
15872         if (!msg)
15873                 return;
15874
15875         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN);
15876         if (!hdr)
15877                 goto free_msg;
15878
15879         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15880             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
15881                               NL80211_ATTR_PAD))
15882                 goto free_msg;
15883
15884         if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
15885                                         wdev->netdev->ifindex))
15886                 goto free_msg;
15887
15888         if (wakeup) {
15889                 struct nlattr *reasons;
15890
15891                 reasons = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
15892                 if (!reasons)
15893                         goto free_msg;
15894
15895                 if (wakeup->disconnect &&
15896                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT))
15897                         goto free_msg;
15898                 if (wakeup->magic_pkt &&
15899                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT))
15900                         goto free_msg;
15901                 if (wakeup->gtk_rekey_failure &&
15902                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE))
15903                         goto free_msg;
15904                 if (wakeup->eap_identity_req &&
15905                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST))
15906                         goto free_msg;
15907                 if (wakeup->four_way_handshake &&
15908                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE))
15909                         goto free_msg;
15910                 if (wakeup->rfkill_release &&
15911                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))
15912                         goto free_msg;
15913
15914                 if (wakeup->pattern_idx >= 0 &&
15915                     nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
15916                                 wakeup->pattern_idx))
15917                         goto free_msg;
15918
15919                 if (wakeup->tcp_match &&
15920                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH))
15921                         goto free_msg;
15922
15923                 if (wakeup->tcp_connlost &&
15924                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST))
15925                         goto free_msg;
15926
15927                 if (wakeup->tcp_nomoretokens &&
15928                     nla_put_flag(msg,
15929                                  NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS))
15930                         goto free_msg;
15931
15932                 if (wakeup->packet) {
15933                         u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211;
15934                         u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN;
15935
15936                         if (!wakeup->packet_80211) {
15937                                 pkt_attr =
15938                                         NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023;
15939                                 len_attr =
15940                                         NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN;
15941                         }
15942
15943                         if (wakeup->packet_len &&
15944                             nla_put_u32(msg, len_attr, wakeup->packet_len))
15945                                 goto free_msg;
15946
15947                         if (nla_put(msg, pkt_attr, wakeup->packet_present_len,
15948                                     wakeup->packet))
15949                                 goto free_msg;
15950                 }
15951
15952                 if (wakeup->net_detect &&
15953                     cfg80211_net_detect_results(msg, wakeup))
15954                                 goto free_msg;
15955
15956                 nla_nest_end(msg, reasons);
15957         }
15958
15959         genlmsg_end(msg, hdr);
15960
15961         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15962                                 NL80211_MCGRP_MLME, gfp);
15963         return;
15964
15965  free_msg:
15966         nlmsg_free(msg);
15967 }
15968 EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup);
15969 #endif
15970
15971 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer,
15972                                 enum nl80211_tdls_operation oper,
15973                                 u16 reason_code, gfp_t gfp)
15974 {
15975         struct wireless_dev *wdev = dev->ieee80211_ptr;
15976         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
15977         struct sk_buff *msg;
15978         void *hdr;
15979
15980         trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper,
15981                                          reason_code);
15982
15983         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15984         if (!msg)
15985                 return;
15986
15987         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER);
15988         if (!hdr) {
15989                 nlmsg_free(msg);
15990                 return;
15991         }
15992
15993         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15994             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
15995             nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) ||
15996             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) ||
15997             (reason_code > 0 &&
15998              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code)))
15999                 goto nla_put_failure;
16000
16001         genlmsg_end(msg, hdr);
16002
16003         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16004                                 NL80211_MCGRP_MLME, gfp);
16005         return;
16006
16007  nla_put_failure:
16008         nlmsg_free(msg);
16009 }
16010 EXPORT_SYMBOL(cfg80211_tdls_oper_request);
16011
16012 static int nl80211_netlink_notify(struct notifier_block * nb,
16013                                   unsigned long state,
16014                                   void *_notify)
16015 {
16016         struct netlink_notify *notify = _notify;
16017         struct cfg80211_registered_device *rdev;
16018         struct wireless_dev *wdev;
16019         struct cfg80211_beacon_registration *reg, *tmp;
16020
16021         if (state != NETLINK_URELEASE || notify->protocol != NETLINK_GENERIC)
16022                 return NOTIFY_DONE;
16023
16024         rcu_read_lock();
16025
16026         list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
16027                 struct cfg80211_sched_scan_request *sched_scan_req;
16028
16029                 list_for_each_entry_rcu(sched_scan_req,
16030                                         &rdev->sched_scan_req_list,
16031                                         list) {
16032                         if (sched_scan_req->owner_nlportid == notify->portid) {
16033                                 sched_scan_req->nl_owner_dead = true;
16034                                 schedule_work(&rdev->sched_scan_stop_wk);
16035                         }
16036                 }
16037
16038                 list_for_each_entry_rcu(wdev, &rdev->wiphy.wdev_list, list) {
16039                         cfg80211_mlme_unregister_socket(wdev, notify->portid);
16040
16041                         if (wdev->owner_nlportid == notify->portid) {
16042                                 wdev->nl_owner_dead = true;
16043                                 schedule_work(&rdev->destroy_work);
16044                         } else if (wdev->conn_owner_nlportid == notify->portid) {
16045                                 schedule_work(&wdev->disconnect_wk);
16046                         }
16047
16048                         cfg80211_release_pmsr(wdev, notify->portid);
16049                 }
16050
16051                 spin_lock_bh(&rdev->beacon_registrations_lock);
16052                 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations,
16053                                          list) {
16054                         if (reg->nlportid == notify->portid) {
16055                                 list_del(&reg->list);
16056                                 kfree(reg);
16057                                 break;
16058                         }
16059                 }
16060                 spin_unlock_bh(&rdev->beacon_registrations_lock);
16061         }
16062
16063         rcu_read_unlock();
16064
16065         /*
16066          * It is possible that the user space process that is controlling the
16067          * indoor setting disappeared, so notify the regulatory core.
16068          */
16069         regulatory_netlink_notify(notify->portid);
16070         return NOTIFY_OK;
16071 }
16072
16073 static struct notifier_block nl80211_netlink_notifier = {
16074         .notifier_call = nl80211_netlink_notify,
16075 };
16076
16077 void cfg80211_ft_event(struct net_device *netdev,
16078                        struct cfg80211_ft_event_params *ft_event)
16079 {
16080         struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
16081         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16082         struct sk_buff *msg;
16083         void *hdr;
16084
16085         trace_cfg80211_ft_event(wiphy, netdev, ft_event);
16086
16087         if (!ft_event->target_ap)
16088                 return;
16089
16090         msg = nlmsg_new(100 + ft_event->ies_len + ft_event->ric_ies_len,
16091                         GFP_KERNEL);
16092         if (!msg)
16093                 return;
16094
16095         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT);
16096         if (!hdr)
16097                 goto out;
16098
16099         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16100             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16101             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap))
16102                 goto out;
16103
16104         if (ft_event->ies &&
16105             nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies))
16106                 goto out;
16107         if (ft_event->ric_ies &&
16108             nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len,
16109                     ft_event->ric_ies))
16110                 goto out;
16111
16112         genlmsg_end(msg, hdr);
16113
16114         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16115                                 NL80211_MCGRP_MLME, GFP_KERNEL);
16116         return;
16117  out:
16118         nlmsg_free(msg);
16119 }
16120 EXPORT_SYMBOL(cfg80211_ft_event);
16121
16122 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp)
16123 {
16124         struct cfg80211_registered_device *rdev;
16125         struct sk_buff *msg;
16126         void *hdr;
16127         u32 nlportid;
16128
16129         rdev = wiphy_to_rdev(wdev->wiphy);
16130         if (!rdev->crit_proto_nlportid)
16131                 return;
16132
16133         nlportid = rdev->crit_proto_nlportid;
16134         rdev->crit_proto_nlportid = 0;
16135
16136         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16137         if (!msg)
16138                 return;
16139
16140         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP);
16141         if (!hdr)
16142                 goto nla_put_failure;
16143
16144         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16145             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
16146                               NL80211_ATTR_PAD))
16147                 goto nla_put_failure;
16148
16149         genlmsg_end(msg, hdr);
16150
16151         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
16152         return;
16153
16154  nla_put_failure:
16155         nlmsg_free(msg);
16156 }
16157 EXPORT_SYMBOL(cfg80211_crit_proto_stopped);
16158
16159 void nl80211_send_ap_stopped(struct wireless_dev *wdev)
16160 {
16161         struct wiphy *wiphy = wdev->wiphy;
16162         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16163         struct sk_buff *msg;
16164         void *hdr;
16165
16166         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
16167         if (!msg)
16168                 return;
16169
16170         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STOP_AP);
16171         if (!hdr)
16172                 goto out;
16173
16174         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16175             nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex) ||
16176             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
16177                               NL80211_ATTR_PAD))
16178                 goto out;
16179
16180         genlmsg_end(msg, hdr);
16181
16182         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(wiphy), msg, 0,
16183                                 NL80211_MCGRP_MLME, GFP_KERNEL);
16184         return;
16185  out:
16186         nlmsg_free(msg);
16187 }
16188
16189 int cfg80211_external_auth_request(struct net_device *dev,
16190                                    struct cfg80211_external_auth_params *params,
16191                                    gfp_t gfp)
16192 {
16193         struct wireless_dev *wdev = dev->ieee80211_ptr;
16194         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16195         struct sk_buff *msg;
16196         void *hdr;
16197
16198         if (!wdev->conn_owner_nlportid)
16199                 return -EINVAL;
16200
16201         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16202         if (!msg)
16203                 return -ENOMEM;
16204
16205         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_EXTERNAL_AUTH);
16206         if (!hdr)
16207                 goto nla_put_failure;
16208
16209         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16210             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
16211             nla_put_u32(msg, NL80211_ATTR_AKM_SUITES, params->key_mgmt_suite) ||
16212             nla_put_u32(msg, NL80211_ATTR_EXTERNAL_AUTH_ACTION,
16213                         params->action) ||
16214             nla_put(msg, NL80211_ATTR_BSSID, ETH_ALEN, params->bssid) ||
16215             nla_put(msg, NL80211_ATTR_SSID, params->ssid.ssid_len,
16216                     params->ssid.ssid))
16217                 goto nla_put_failure;
16218
16219         genlmsg_end(msg, hdr);
16220         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
16221                         wdev->conn_owner_nlportid);
16222         return 0;
16223
16224  nla_put_failure:
16225         nlmsg_free(msg);
16226         return -ENOBUFS;
16227 }
16228 EXPORT_SYMBOL(cfg80211_external_auth_request);
16229
16230 /* initialisation/exit functions */
16231
16232 int __init nl80211_init(void)
16233 {
16234         int err;
16235
16236         err = genl_register_family(&nl80211_fam);
16237         if (err)
16238                 return err;
16239
16240         err = netlink_register_notifier(&nl80211_netlink_notifier);
16241         if (err)
16242                 goto err_out;
16243
16244         return 0;
16245  err_out:
16246         genl_unregister_family(&nl80211_fam);
16247         return err;
16248 }
16249
16250 void nl80211_exit(void)
16251 {
16252         netlink_unregister_notifier(&nl80211_netlink_notifier);
16253         genl_unregister_family(&nl80211_fam);
16254 }