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 /* policy for the attributes */
 204 static const struct nla_policy nl80211_policy[NUM_NL80211_ATTR] = {
 205         [NL80211_ATTR_WIPHY] = { .type = NLA_U32 },
 206         [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING,
 207                                       .len = 20-1 },
 208         [NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED },
 209
 210         [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 },
 211         [NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 },
 212         [NL80211_ATTR_CHANNEL_WIDTH] = { .type = NLA_U32 },
 213         [NL80211_ATTR_CENTER_FREQ1] = { .type = NLA_U32 },
 214         [NL80211_ATTR_CENTER_FREQ2] = { .type = NLA_U32 },
 215
 216         [NL80211_ATTR_WIPHY_RETRY_SHORT] = { .type = NLA_U8 },
 217         [NL80211_ATTR_WIPHY_RETRY_LONG] = { .type = NLA_U8 },
 218         [NL80211_ATTR_WIPHY_FRAG_THRESHOLD] = { .type = NLA_U32 },
 219         [NL80211_ATTR_WIPHY_RTS_THRESHOLD] = { .type = NLA_U32 },
 220         [NL80211_ATTR_WIPHY_COVERAGE_CLASS] = { .type = NLA_U8 },
 221         [NL80211_ATTR_WIPHY_DYN_ACK] = { .type = NLA_FLAG },
 222
 223         [NL80211_ATTR_IFTYPE] = { .type = NLA_U32 },
 224         [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 },
 225         [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 },
 226
 227         [NL80211_ATTR_MAC] = { .len = ETH_ALEN },
 228         [NL80211_ATTR_PREV_BSSID] = { .len = ETH_ALEN },
 229
 230         [NL80211_ATTR_KEY] = { .type = NLA_NESTED, },
 231         [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY,
 232                                     .len = WLAN_MAX_KEY_LEN },
 233         [NL80211_ATTR_KEY_IDX] = { .type = NLA_U8 },
 234         [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 },
 235         [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG },
 236         [NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
 237         [NL80211_ATTR_KEY_TYPE] = { .type = NLA_U32 },
 238
 239         [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 },
 240         [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 },
 241         [NL80211_ATTR_BEACON_HEAD] = { .type = NLA_BINARY,
 242                                        .len = IEEE80211_MAX_DATA_LEN },
 243         [NL80211_ATTR_BEACON_TAIL] = { .type = NLA_BINARY,
 244                                        .len = IEEE80211_MAX_DATA_LEN },
 245         [NL80211_ATTR_STA_AID] = { .type = NLA_U16 },
 246         [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED },
 247         [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 },
 248         [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY,
 249                                                .len = NL80211_MAX_SUPP_RATES },
 250         [NL80211_ATTR_STA_PLINK_ACTION] = { .type = NLA_U8 },
 251         [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 },
 252         [NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ },
 253         [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY,
 254                                    .len = IEEE80211_MAX_MESH_ID_LEN },
 255         [NL80211_ATTR_MPATH_NEXT_HOP] = { .type = NLA_U32 },
 256
 257         [NL80211_ATTR_REG_ALPHA2] = { .type = NLA_STRING, .len = 2 },
 258         [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED },
 259
 260         [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 },
 261         [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 },
 262         [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 },
 263         [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY,
 264                                            .len = NL80211_MAX_SUPP_RATES },
 265         [NL80211_ATTR_BSS_HT_OPMODE] = { .type = NLA_U16 },
 266
 267         [NL80211_ATTR_MESH_CONFIG] = { .type = NLA_NESTED },
 268         [NL80211_ATTR_SUPPORT_MESH_AUTH] = { .type = NLA_FLAG },
 269
 270         [NL80211_ATTR_HT_CAPABILITY] = { .len = NL80211_HT_CAPABILITY_LEN },
 271
 272         [NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 },
 273         [NL80211_ATTR_IE] = { .type = NLA_BINARY,
 274                               .len = IEEE80211_MAX_DATA_LEN },
 275         [NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED },
 276         [NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED },
 277
 278         [NL80211_ATTR_SSID] = { .type = NLA_BINARY,
 279                                 .len = IEEE80211_MAX_SSID_LEN },
 280         [NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 },
 281         [NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 },
 282         [NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG },
 283         [NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG },
 284         [NL80211_ATTR_USE_MFP] = { .type = NLA_U32 },
 285         [NL80211_ATTR_STA_FLAGS2] = {
 286                 .len = sizeof(struct nl80211_sta_flag_update),
 287         },
 288         [NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG },
 289         [NL80211_ATTR_CONTROL_PORT_ETHERTYPE] = { .type = NLA_U16 },
 290         [NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT] = { .type = NLA_FLAG },
 291         [NL80211_ATTR_CONTROL_PORT_OVER_NL80211] = { .type = NLA_FLAG },
 292         [NL80211_ATTR_PRIVACY] = { .type = NLA_FLAG },
 293         [NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 },
 294         [NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 },
 295         [NL80211_ATTR_PID] = { .type = NLA_U32 },
 296         [NL80211_ATTR_4ADDR] = { .type = NLA_U8 },
 297         [NL80211_ATTR_PMKID] = { .len = WLAN_PMKID_LEN },
 298         [NL80211_ATTR_DURATION] = { .type = NLA_U32 },
 299         [NL80211_ATTR_COOKIE] = { .type = NLA_U64 },
 300         [NL80211_ATTR_TX_RATES] = { .type = NLA_NESTED },
 301         [NL80211_ATTR_FRAME] = { .type = NLA_BINARY,
 302                                  .len = IEEE80211_MAX_DATA_LEN },
 303         [NL80211_ATTR_FRAME_MATCH] = { .type = NLA_BINARY, },
 304         [NL80211_ATTR_PS_STATE] = { .type = NLA_U32 },
 305         [NL80211_ATTR_CQM] = { .type = NLA_NESTED, },
 306         [NL80211_ATTR_LOCAL_STATE_CHANGE] = { .type = NLA_FLAG },
 307         [NL80211_ATTR_AP_ISOLATE] = { .type = NLA_U8 },
 308         [NL80211_ATTR_WIPHY_TX_POWER_SETTING] = { .type = NLA_U32 },
 309         [NL80211_ATTR_WIPHY_TX_POWER_LEVEL] = { .type = NLA_U32 },
 310         [NL80211_ATTR_FRAME_TYPE] = { .type = NLA_U16 },
 311         [NL80211_ATTR_WIPHY_ANTENNA_TX] = { .type = NLA_U32 },
 312         [NL80211_ATTR_WIPHY_ANTENNA_RX] = { .type = NLA_U32 },
 313         [NL80211_ATTR_MCAST_RATE] = { .type = NLA_U32 },
 314         [NL80211_ATTR_OFFCHANNEL_TX_OK] = { .type = NLA_FLAG },
 315         [NL80211_ATTR_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
 316         [NL80211_ATTR_WOWLAN_TRIGGERS] = { .type = NLA_NESTED },
 317         [NL80211_ATTR_STA_PLINK_STATE] = { .type = NLA_U8 },
 318         [NL80211_ATTR_SCHED_SCAN_INTERVAL] = { .type = NLA_U32 },
 319         [NL80211_ATTR_REKEY_DATA] = { .type = NLA_NESTED },
 320         [NL80211_ATTR_SCAN_SUPP_RATES] = { .type = NLA_NESTED },
 321         [NL80211_ATTR_HIDDEN_SSID] = { .type = NLA_U32 },
 322         [NL80211_ATTR_IE_PROBE_RESP] = { .type = NLA_BINARY,
 323                                          .len = IEEE80211_MAX_DATA_LEN },
 324         [NL80211_ATTR_IE_ASSOC_RESP] = { .type = NLA_BINARY,
 325                                          .len = IEEE80211_MAX_DATA_LEN },
 326         [NL80211_ATTR_ROAM_SUPPORT] = { .type = NLA_FLAG },
 327         [NL80211_ATTR_SCHED_SCAN_MATCH] = { .type = NLA_NESTED },
 328         [NL80211_ATTR_TX_NO_CCK_RATE] = { .type = NLA_FLAG },
 329         [NL80211_ATTR_TDLS_ACTION] = { .type = NLA_U8 },
 330         [NL80211_ATTR_TDLS_DIALOG_TOKEN] = { .type = NLA_U8 },
 331         [NL80211_ATTR_TDLS_OPERATION] = { .type = NLA_U8 },
 332         [NL80211_ATTR_TDLS_SUPPORT] = { .type = NLA_FLAG },
 333         [NL80211_ATTR_TDLS_EXTERNAL_SETUP] = { .type = NLA_FLAG },
 334         [NL80211_ATTR_TDLS_INITIATOR] = { .type = NLA_FLAG },
 335         [NL80211_ATTR_DONT_WAIT_FOR_ACK] = { .type = NLA_FLAG },
 336         [NL80211_ATTR_PROBE_RESP] = { .type = NLA_BINARY,
 337                                       .len = IEEE80211_MAX_DATA_LEN },
 338         [NL80211_ATTR_DFS_REGION] = { .type = NLA_U8 },
 339         [NL80211_ATTR_DISABLE_HT] = { .type = NLA_FLAG },
 340         [NL80211_ATTR_HT_CAPABILITY_MASK] = {
 341                 .len = NL80211_HT_CAPABILITY_LEN
 342         },
 343         [NL80211_ATTR_NOACK_MAP] = { .type = NLA_U16 },
 344         [NL80211_ATTR_INACTIVITY_TIMEOUT] = { .type = NLA_U16 },
 345         [NL80211_ATTR_BG_SCAN_PERIOD] = { .type = NLA_U16 },
 346         [NL80211_ATTR_WDEV] = { .type = NLA_U64 },
 347         [NL80211_ATTR_USER_REG_HINT_TYPE] = { .type = NLA_U32 },
 348         [NL80211_ATTR_AUTH_DATA] = { .type = NLA_BINARY, },
 349         [NL80211_ATTR_VHT_CAPABILITY] = { .len = NL80211_VHT_CAPABILITY_LEN },
 350         [NL80211_ATTR_SCAN_FLAGS] = { .type = NLA_U32 },
 351         [NL80211_ATTR_P2P_CTWINDOW] = { .type = NLA_U8 },
 352         [NL80211_ATTR_P2P_OPPPS] = { .type = NLA_U8 },
 353         [NL80211_ATTR_LOCAL_MESH_POWER_MODE] = {. type = NLA_U32 },
 354         [NL80211_ATTR_ACL_POLICY] = {. type = NLA_U32 },
 355         [NL80211_ATTR_MAC_ADDRS] = { .type = NLA_NESTED },
 356         [NL80211_ATTR_STA_CAPABILITY] = { .type = NLA_U16 },
 357         [NL80211_ATTR_STA_EXT_CAPABILITY] = { .type = NLA_BINARY, },
 358         [NL80211_ATTR_SPLIT_WIPHY_DUMP] = { .type = NLA_FLAG, },
 359         [NL80211_ATTR_DISABLE_VHT] = { .type = NLA_FLAG },
 360         [NL80211_ATTR_VHT_CAPABILITY_MASK] = {
 361                 .len = NL80211_VHT_CAPABILITY_LEN,
 362         },
 363         [NL80211_ATTR_MDID] = { .type = NLA_U16 },
 364         [NL80211_ATTR_IE_RIC] = { .type = NLA_BINARY,
 365                                   .len = IEEE80211_MAX_DATA_LEN },
 366         [NL80211_ATTR_PEER_AID] = { .type = NLA_U16 },
 367         [NL80211_ATTR_CH_SWITCH_COUNT] = { .type = NLA_U32 },
 368         [NL80211_ATTR_CH_SWITCH_BLOCK_TX] = { .type = NLA_FLAG },
 369         [NL80211_ATTR_CSA_IES] = { .type = NLA_NESTED },
 370         [NL80211_ATTR_CSA_C_OFF_BEACON] = { .type = NLA_BINARY },
 371         [NL80211_ATTR_CSA_C_OFF_PRESP] = { .type = NLA_BINARY },
 372         [NL80211_ATTR_STA_SUPPORTED_CHANNELS] = { .type = NLA_BINARY },
 373         [NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES] = { .type = NLA_BINARY },
 374         [NL80211_ATTR_HANDLE_DFS] = { .type = NLA_FLAG },
 375         [NL80211_ATTR_OPMODE_NOTIF] = { .type = NLA_U8 },
 376         [NL80211_ATTR_VENDOR_ID] = { .type = NLA_U32 },
 377         [NL80211_ATTR_VENDOR_SUBCMD] = { .type = NLA_U32 },
 378         [NL80211_ATTR_VENDOR_DATA] = { .type = NLA_BINARY },
 379         [NL80211_ATTR_QOS_MAP] = { .type = NLA_BINARY,
 380                                    .len = IEEE80211_QOS_MAP_LEN_MAX },
 381         [NL80211_ATTR_MAC_HINT] = { .len = ETH_ALEN },
 382         [NL80211_ATTR_WIPHY_FREQ_HINT] = { .type = NLA_U32 },
 383         [NL80211_ATTR_TDLS_PEER_CAPABILITY] = { .type = NLA_U32 },
 384         [NL80211_ATTR_SOCKET_OWNER] = { .type = NLA_FLAG },
 385         [NL80211_ATTR_CSA_C_OFFSETS_TX] = { .type = NLA_BINARY },
 386         [NL80211_ATTR_USE_RRM] = { .type = NLA_FLAG },
 387         [NL80211_ATTR_TSID] = { .type = NLA_U8 },
 388         [NL80211_ATTR_USER_PRIO] = { .type = NLA_U8 },
 389         [NL80211_ATTR_ADMITTED_TIME] = { .type = NLA_U16 },
 390         [NL80211_ATTR_SMPS_MODE] = { .type = NLA_U8 },
 391         [NL80211_ATTR_MAC_MASK] = { .len = ETH_ALEN },
 392         [NL80211_ATTR_WIPHY_SELF_MANAGED_REG] = { .type = NLA_FLAG },
 393         [NL80211_ATTR_NETNS_FD] = { .type = NLA_U32 },
 394         [NL80211_ATTR_SCHED_SCAN_DELAY] = { .type = NLA_U32 },
 395         [NL80211_ATTR_REG_INDOOR] = { .type = NLA_FLAG },
 396         [NL80211_ATTR_PBSS] = { .type = NLA_FLAG },
 397         [NL80211_ATTR_BSS_SELECT] = { .type = NLA_NESTED },
 398         [NL80211_ATTR_STA_SUPPORT_P2P_PS] = { .type = NLA_U8 },
 399         [NL80211_ATTR_MU_MIMO_GROUP_DATA] = {
 400                 .len = VHT_MUMIMO_GROUPS_DATA_LEN
 401         },
 402         [NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR] = { .len = ETH_ALEN },
 403         [NL80211_ATTR_NAN_MASTER_PREF] = { .type = NLA_U8 },
 404         [NL80211_ATTR_BANDS] = { .type = NLA_U32 },
 405         [NL80211_ATTR_NAN_FUNC] = { .type = NLA_NESTED },
 406         [NL80211_ATTR_FILS_KEK] = { .type = NLA_BINARY,
 407                                     .len = FILS_MAX_KEK_LEN },
 408         [NL80211_ATTR_FILS_NONCES] = { .len = 2 * FILS_NONCE_LEN },
 409         [NL80211_ATTR_MULTICAST_TO_UNICAST_ENABLED] = { .type = NLA_FLAG, },
 410         [NL80211_ATTR_BSSID] = { .len = ETH_ALEN },
 411         [NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI] = { .type = NLA_S8 },
 412         [NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST] = {
 413                 .len = sizeof(struct nl80211_bss_select_rssi_adjust)
 414         },
 415         [NL80211_ATTR_TIMEOUT_REASON] = { .type = NLA_U32 },
 416         [NL80211_ATTR_FILS_ERP_USERNAME] = { .type = NLA_BINARY,
 417                                              .len = FILS_ERP_MAX_USERNAME_LEN },
 418         [NL80211_ATTR_FILS_ERP_REALM] = { .type = NLA_BINARY,
 419                                           .len = FILS_ERP_MAX_REALM_LEN },
 420         [NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] = { .type = NLA_U16 },
 421         [NL80211_ATTR_FILS_ERP_RRK] = { .type = NLA_BINARY,
 422                                         .len = FILS_ERP_MAX_RRK_LEN },
 423         [NL80211_ATTR_FILS_CACHE_ID] = { .len = 2 },
 424         [NL80211_ATTR_PMK] = { .type = NLA_BINARY, .len = PMK_MAX_LEN },
 425         [NL80211_ATTR_SCHED_SCAN_MULTI] = { .type = NLA_FLAG },
 426         [NL80211_ATTR_EXTERNAL_AUTH_SUPPORT] = { .type = NLA_FLAG },
 427
 428         [NL80211_ATTR_TXQ_LIMIT] = { .type = NLA_U32 },
 429         [NL80211_ATTR_TXQ_MEMORY_LIMIT] = { .type = NLA_U32 },
 430         [NL80211_ATTR_TXQ_QUANTUM] = { .type = NLA_U32 },
 431 };
 432
 433 /* policy for the key attributes */
 434 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = {
 435         [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN },
 436         [NL80211_KEY_IDX] = { .type = NLA_U8 },
 437         [NL80211_KEY_CIPHER] = { .type = NLA_U32 },
 438         [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
 439         [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG },
 440         [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG },
 441         [NL80211_KEY_TYPE] = { .type = NLA_U32 },
 442         [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
 443 };
 444
 445 /* policy for the key default flags */
 446 static const struct nla_policy
 447 nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = {
 448         [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG },
 449         [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG },
 450 };
 451
 452 #ifdef CONFIG_PM
 453 /* policy for WoWLAN attributes */
 454 static const struct nla_policy
 455 nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = {
 456         [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG },
 457         [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG },
 458         [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG },
 459         [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED },
 460         [NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG },
 461         [NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG },
 462         [NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG },
 463         [NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG },
 464         [NL80211_WOWLAN_TRIG_TCP_CONNECTION] = { .type = NLA_NESTED },
 465         [NL80211_WOWLAN_TRIG_NET_DETECT] = { .type = NLA_NESTED },
 466 };
 467
 468 static const struct nla_policy
 469 nl80211_wowlan_tcp_policy[NUM_NL80211_WOWLAN_TCP] = {
 470         [NL80211_WOWLAN_TCP_SRC_IPV4] = { .type = NLA_U32 },
 471         [NL80211_WOWLAN_TCP_DST_IPV4] = { .type = NLA_U32 },
 472         [NL80211_WOWLAN_TCP_DST_MAC] = { .len = ETH_ALEN },
 473         [NL80211_WOWLAN_TCP_SRC_PORT] = { .type = NLA_U16 },
 474         [NL80211_WOWLAN_TCP_DST_PORT] = { .type = NLA_U16 },
 475         [NL80211_WOWLAN_TCP_DATA_PAYLOAD] = { .len = 1 },
 476         [NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ] = {
 477                 .len = sizeof(struct nl80211_wowlan_tcp_data_seq)
 478         },
 479         [NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN] = {
 480                 .len = sizeof(struct nl80211_wowlan_tcp_data_token)
 481         },
 482         [NL80211_WOWLAN_TCP_DATA_INTERVAL] = { .type = NLA_U32 },
 483         [NL80211_WOWLAN_TCP_WAKE_PAYLOAD] = { .len = 1 },
 484         [NL80211_WOWLAN_TCP_WAKE_MASK] = { .len = 1 },
 485 };
 486 #endif /* CONFIG_PM */
 487
 488 /* policy for coalesce rule attributes */
 489 static const struct nla_policy
 490 nl80211_coalesce_policy[NUM_NL80211_ATTR_COALESCE_RULE] = {
 491         [NL80211_ATTR_COALESCE_RULE_DELAY] = { .type = NLA_U32 },
 492         [NL80211_ATTR_COALESCE_RULE_CONDITION] = { .type = NLA_U32 },
 493         [NL80211_ATTR_COALESCE_RULE_PKT_PATTERN] = { .type = NLA_NESTED },
 494 };
 495
 496 /* policy for GTK rekey offload attributes */
 497 static const struct nla_policy
 498 nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = {
 499         [NL80211_REKEY_DATA_KEK] = { .len = NL80211_KEK_LEN },
 500         [NL80211_REKEY_DATA_KCK] = { .len = NL80211_KCK_LEN },
 501         [NL80211_REKEY_DATA_REPLAY_CTR] = { .len = NL80211_REPLAY_CTR_LEN },
 502 };
 503
 504 static const struct nla_policy
 505 nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = {
 506         [NL80211_SCHED_SCAN_MATCH_ATTR_SSID] = { .type = NLA_BINARY,
 507                                                  .len = IEEE80211_MAX_SSID_LEN },
 508         [NL80211_SCHED_SCAN_MATCH_ATTR_BSSID] = { .len = ETH_ALEN },
 509         [NL80211_SCHED_SCAN_MATCH_ATTR_RSSI] = { .type = NLA_U32 },
 510 };
 511
 512 static const struct nla_policy
 513 nl80211_plan_policy[NL80211_SCHED_SCAN_PLAN_MAX + 1] = {
 514         [NL80211_SCHED_SCAN_PLAN_INTERVAL] = { .type = NLA_U32 },
 515         [NL80211_SCHED_SCAN_PLAN_ITERATIONS] = { .type = NLA_U32 },
 516 };
 517
 518 static const struct nla_policy
 519 nl80211_bss_select_policy[NL80211_BSS_SELECT_ATTR_MAX + 1] = {
 520         [NL80211_BSS_SELECT_ATTR_RSSI] = { .type = NLA_FLAG },
 521         [NL80211_BSS_SELECT_ATTR_BAND_PREF] = { .type = NLA_U32 },
 522         [NL80211_BSS_SELECT_ATTR_RSSI_ADJUST] = {
 523                 .len = sizeof(struct nl80211_bss_select_rssi_adjust)
 524         },
 525 };
 526
 527 /* policy for NAN function attributes */
 528 static const struct nla_policy
 529 nl80211_nan_func_policy[NL80211_NAN_FUNC_ATTR_MAX + 1] = {
 530         [NL80211_NAN_FUNC_TYPE] = { .type = NLA_U8 },
 531         [NL80211_NAN_FUNC_SERVICE_ID] = {
 532                                     .len = NL80211_NAN_FUNC_SERVICE_ID_LEN },
 533         [NL80211_NAN_FUNC_PUBLISH_TYPE] = { .type = NLA_U8 },
 534         [NL80211_NAN_FUNC_PUBLISH_BCAST] = { .type = NLA_FLAG },
 535         [NL80211_NAN_FUNC_SUBSCRIBE_ACTIVE] = { .type = NLA_FLAG },
 536         [NL80211_NAN_FUNC_FOLLOW_UP_ID] = { .type = NLA_U8 },
 537         [NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID] = { .type = NLA_U8 },
 538         [NL80211_NAN_FUNC_FOLLOW_UP_DEST] = { .len = ETH_ALEN },
 539         [NL80211_NAN_FUNC_CLOSE_RANGE] = { .type = NLA_FLAG },
 540         [NL80211_NAN_FUNC_TTL] = { .type = NLA_U32 },
 541         [NL80211_NAN_FUNC_SERVICE_INFO] = { .type = NLA_BINARY,
 542                         .len = NL80211_NAN_FUNC_SERVICE_SPEC_INFO_MAX_LEN },
 543         [NL80211_NAN_FUNC_SRF] = { .type = NLA_NESTED },
 544         [NL80211_NAN_FUNC_RX_MATCH_FILTER] = { .type = NLA_NESTED },
 545         [NL80211_NAN_FUNC_TX_MATCH_FILTER] = { .type = NLA_NESTED },
 546         [NL80211_NAN_FUNC_INSTANCE_ID] = { .type = NLA_U8 },
 547         [NL80211_NAN_FUNC_TERM_REASON] = { .type = NLA_U8 },
 548 };
 549
 550 /* policy for Service Response Filter attributes */
 551 static const struct nla_policy
 552 nl80211_nan_srf_policy[NL80211_NAN_SRF_ATTR_MAX + 1] = {
 553         [NL80211_NAN_SRF_INCLUDE] = { .type = NLA_FLAG },
 554         [NL80211_NAN_SRF_BF] = { .type = NLA_BINARY,
 555                                  .len =  NL80211_NAN_FUNC_SRF_MAX_LEN },
 556         [NL80211_NAN_SRF_BF_IDX] = { .type = NLA_U8 },
 557         [NL80211_NAN_SRF_MAC_ADDRS] = { .type = NLA_NESTED },
 558 };
 559
 560 /* policy for packet pattern attributes */
 561 static const struct nla_policy
 562 nl80211_packet_pattern_policy[MAX_NL80211_PKTPAT + 1] = {
 563         [NL80211_PKTPAT_MASK] = { .type = NLA_BINARY, },
 564         [NL80211_PKTPAT_PATTERN] = { .type = NLA_BINARY, },
 565         [NL80211_PKTPAT_OFFSET] = { .type = NLA_U32 },
 566 };
 567
 568 static int nl80211_prepare_wdev_dump(struct sk_buff *skb,
 569                                      struct netlink_callback *cb,
 570                                      struct cfg80211_registered_device **rdev,
 571                                      struct wireless_dev **wdev)
 572 {
 573         int err;
 574
 575         if (!cb->args[0]) {
 576                 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
 577                                   genl_family_attrbuf(&nl80211_fam),
 578                                   nl80211_fam.maxattr, nl80211_policy, NULL);
 579                 if (err)
 580                         return err;
 581
 582                 *wdev = __cfg80211_wdev_from_attrs(
 583                                         sock_net(skb->sk),
 584                                         genl_family_attrbuf(&nl80211_fam));
 585                 if (IS_ERR(*wdev))
 586                         return PTR_ERR(*wdev);
 587                 *rdev = wiphy_to_rdev((*wdev)->wiphy);
 588                 /* 0 is the first index - add 1 to parse only once */
 589                 cb->args[0] = (*rdev)->wiphy_idx + 1;
 590                 cb->args[1] = (*wdev)->identifier;
 591         } else {
 592                 /* subtract the 1 again here */
 593                 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
 594                 struct wireless_dev *tmp;
 595
 596                 if (!wiphy)
 597                         return -ENODEV;
 598                 *rdev = wiphy_to_rdev(wiphy);
 599                 *wdev = NULL;
 600
 601                 list_for_each_entry(tmp, &(*rdev)->wiphy.wdev_list, list) {
 602                         if (tmp->identifier == cb->args[1]) {
 603                                 *wdev = tmp;
 604                                 break;
 605                         }
 606                 }
 607
 608                 if (!*wdev)
 609                         return -ENODEV;
 610         }
 611
 612         return 0;
 613 }
 614
 615 /* IE validation */
 616 static bool is_valid_ie_attr(const struct nlattr *attr)
 617 {
 618         const u8 *pos;
 619         int len;
 620
 621         if (!attr)
 622                 return true;
 623
 624         pos = nla_data(attr);
 625         len = nla_len(attr);
 626
 627         while (len) {
 628                 u8 elemlen;
 629
 630                 if (len < 2)
 631                         return false;
 632                 len -= 2;
 633
 634                 elemlen = pos[1];
 635                 if (elemlen > len)
 636                         return false;
 637
 638                 len -= elemlen;
 639                 pos += 2 + elemlen;
 640         }
 641
 642         return true;
 643 }
 644
 645 /* message building helper */
 646 static inline void *nl80211hdr_put(struct sk_buff *skb, u32 portid, u32 seq,
 647                                    int flags, u8 cmd)
 648 {
 649         /* since there is no private header just add the generic one */
 650         return genlmsg_put(skb, portid, seq, &nl80211_fam, flags, cmd);
 651 }
 652
 653 static int nl80211_msg_put_wmm_rules(struct sk_buff *msg,
 654                                      const struct ieee80211_reg_rule *rule)
 655 {
 656         int j;
 657         struct nlattr *nl_wmm_rules =
 658                 nla_nest_start(msg, NL80211_FREQUENCY_ATTR_WMM);
 659
 660         if (!nl_wmm_rules)
 661                 goto nla_put_failure;
 662
 663         for (j = 0; j < IEEE80211_NUM_ACS; j++) {
 664                 struct nlattr *nl_wmm_rule = nla_nest_start(msg, j);
 665
 666                 if (!nl_wmm_rule)
 667                         goto nla_put_failure;
 668
 669                 if (nla_put_u16(msg, NL80211_WMMR_CW_MIN,
 670                                 rule->wmm_rule->client[j].cw_min) ||
 671                     nla_put_u16(msg, NL80211_WMMR_CW_MAX,
 672                                 rule->wmm_rule->client[j].cw_max) ||
 673                     nla_put_u8(msg, NL80211_WMMR_AIFSN,
 674                                rule->wmm_rule->client[j].aifsn) ||
 675                     nla_put_u8(msg, NL80211_WMMR_TXOP,
 676                                rule->wmm_rule->client[j].cot))
 677                         goto nla_put_failure;
 678
 679                 nla_nest_end(msg, nl_wmm_rule);
 680         }
 681         nla_nest_end(msg, nl_wmm_rules);
 682
 683         return 0;
 684
 685 nla_put_failure:
 686         return -ENOBUFS;
 687 }
 688
 689 static int nl80211_msg_put_channel(struct sk_buff *msg, struct wiphy *wiphy,
 690                                    struct ieee80211_channel *chan,
 691                                    bool large)
 692 {
 693         /* Some channels must be completely excluded from the
 694          * list to protect old user-space tools from breaking
 695          */
 696         if (!large && chan->flags &
 697             (IEEE80211_CHAN_NO_10MHZ | IEEE80211_CHAN_NO_20MHZ))
 698                 return 0;
 699
 700         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ,
 701                         chan->center_freq))
 702                 goto nla_put_failure;
 703
 704         if ((chan->flags & IEEE80211_CHAN_DISABLED) &&
 705             nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED))
 706                 goto nla_put_failure;
 707         if (chan->flags & IEEE80211_CHAN_NO_IR) {
 708                 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IR))
 709                         goto nla_put_failure;
 710                 if (nla_put_flag(msg, __NL80211_FREQUENCY_ATTR_NO_IBSS))
 711                         goto nla_put_failure;
 712         }
 713         if (chan->flags & IEEE80211_CHAN_RADAR) {
 714                 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR))
 715                         goto nla_put_failure;
 716                 if (large) {
 717                         u32 time;
 718
 719                         time = elapsed_jiffies_msecs(chan->dfs_state_entered);
 720
 721                         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_STATE,
 722                                         chan->dfs_state))
 723                                 goto nla_put_failure;
 724                         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_TIME,
 725                                         time))
 726                                 goto nla_put_failure;
 727                         if (nla_put_u32(msg,
 728                                         NL80211_FREQUENCY_ATTR_DFS_CAC_TIME,
 729                                         chan->dfs_cac_ms))
 730                                 goto nla_put_failure;
 731                 }
 732         }
 733
 734         if (large) {
 735                 if ((chan->flags & IEEE80211_CHAN_NO_HT40MINUS) &&
 736                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_MINUS))
 737                         goto nla_put_failure;
 738                 if ((chan->flags & IEEE80211_CHAN_NO_HT40PLUS) &&
 739                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_PLUS))
 740                         goto nla_put_failure;
 741                 if ((chan->flags & IEEE80211_CHAN_NO_80MHZ) &&
 742                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_80MHZ))
 743                         goto nla_put_failure;
 744                 if ((chan->flags & IEEE80211_CHAN_NO_160MHZ) &&
 745                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_160MHZ))
 746                         goto nla_put_failure;
 747                 if ((chan->flags & IEEE80211_CHAN_INDOOR_ONLY) &&
 748                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_INDOOR_ONLY))
 749                         goto nla_put_failure;
 750                 if ((chan->flags & IEEE80211_CHAN_IR_CONCURRENT) &&
 751                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_IR_CONCURRENT))
 752                         goto nla_put_failure;
 753                 if ((chan->flags & IEEE80211_CHAN_NO_20MHZ) &&
 754                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_20MHZ))
 755                         goto nla_put_failure;
 756                 if ((chan->flags & IEEE80211_CHAN_NO_10MHZ) &&
 757                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_10MHZ))
 758                         goto nla_put_failure;
 759         }
 760
 761         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
 762                         DBM_TO_MBM(chan->max_power)))
 763                 goto nla_put_failure;
 764
 765         if (large) {
 766                 const struct ieee80211_reg_rule *rule =
 767                         freq_reg_info(wiphy, chan->center_freq);
 768
 769                 if (!IS_ERR(rule) && rule->wmm_rule) {
 770                         if (nl80211_msg_put_wmm_rules(msg, rule))
 771                                 goto nla_put_failure;
 772                 }
 773         }
 774
 775         return 0;
 776
 777  nla_put_failure:
 778         return -ENOBUFS;
 779 }
 780
 781 static bool nl80211_put_txq_stats(struct sk_buff *msg,
 782                                   struct cfg80211_txq_stats *txqstats,
 783                                   int attrtype)
 784 {
 785         struct nlattr *txqattr;
 786
 787 #define PUT_TXQVAL_U32(attr, memb) do {                                   \
 788         if (txqstats->filled & BIT(NL80211_TXQ_STATS_ ## attr) &&         \
 789             nla_put_u32(msg, NL80211_TXQ_STATS_ ## attr, txqstats->memb)) \
 790                 return false;                                             \
 791         } while (0)
 792
 793         txqattr = nla_nest_start(msg, attrtype);
 794         if (!txqattr)
 795                 return false;
 796
 797         PUT_TXQVAL_U32(BACKLOG_BYTES, backlog_bytes);
 798         PUT_TXQVAL_U32(BACKLOG_PACKETS, backlog_packets);
 799         PUT_TXQVAL_U32(FLOWS, flows);
 800         PUT_TXQVAL_U32(DROPS, drops);
 801         PUT_TXQVAL_U32(ECN_MARKS, ecn_marks);
 802         PUT_TXQVAL_U32(OVERLIMIT, overlimit);
 803         PUT_TXQVAL_U32(OVERMEMORY, overmemory);
 804         PUT_TXQVAL_U32(COLLISIONS, collisions);
 805         PUT_TXQVAL_U32(TX_BYTES, tx_bytes);
 806         PUT_TXQVAL_U32(TX_PACKETS, tx_packets);
 807         PUT_TXQVAL_U32(MAX_FLOWS, max_flows);
 808         nla_nest_end(msg, txqattr);
 809
 810 #undef PUT_TXQVAL_U32
 811         return true;
 812 }
 813
 814 /* netlink command implementations */
 815
 816 struct key_parse {
 817         struct key_params p;
 818         int idx;
 819         int type;
 820         bool def, defmgmt;
 821         bool def_uni, def_multi;
 822 };
 823
 824 static int nl80211_parse_key_new(struct genl_info *info, struct nlattr *key,
 825                                  struct key_parse *k)
 826 {
 827         struct nlattr *tb[NL80211_KEY_MAX + 1];
 828         int err = nla_parse_nested(tb, NL80211_KEY_MAX, key,
 829                                    nl80211_key_policy, info->extack);
 830         if (err)
 831                 return err;
 832
 833         k->def = !!tb[NL80211_KEY_DEFAULT];
 834         k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];
 835
 836         if (k->def) {
 837                 k->def_uni = true;
 838                 k->def_multi = true;
 839         }
 840         if (k->defmgmt)
 841                 k->def_multi = true;
 842
 843         if (tb[NL80211_KEY_IDX])
 844                 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);
 845
 846         if (tb[NL80211_KEY_DATA]) {
 847                 k->p.key = nla_data(tb[NL80211_KEY_DATA]);
 848                 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
 849         }
 850
 851         if (tb[NL80211_KEY_SEQ]) {
 852                 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
 853                 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
 854         }
 855
 856         if (tb[NL80211_KEY_CIPHER])
 857                 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);
 858
 859         if (tb[NL80211_KEY_TYPE]) {
 860                 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]);
 861                 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
 862                         return genl_err_attr(info, -EINVAL,
 863                                              tb[NL80211_KEY_TYPE]);
 864         }
 865
 866         if (tb[NL80211_KEY_DEFAULT_TYPES]) {
 867                 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
 868
 869                 err = nla_parse_nested(kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
 870                                        tb[NL80211_KEY_DEFAULT_TYPES],
 871                                        nl80211_key_default_policy,
 872                                        info->extack);
 873                 if (err)
 874                         return err;
 875
 876                 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
 877                 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
 878         }
 879
 880         return 0;
 881 }
 882
 883 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k)
 884 {
 885         if (info->attrs[NL80211_ATTR_KEY_DATA]) {
 886                 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
 887                 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
 888         }
 889
 890         if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
 891                 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
 892                 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
 893         }
 894
 895         if (info->attrs[NL80211_ATTR_KEY_IDX])
 896                 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
 897
 898         if (info->attrs[NL80211_ATTR_KEY_CIPHER])
 899                 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
 900
 901         k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
 902         k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT];
 903
 904         if (k->def) {
 905                 k->def_uni = true;
 906                 k->def_multi = true;
 907         }
 908         if (k->defmgmt)
 909                 k->def_multi = true;
 910
 911         if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
 912                 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
 913                 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES) {
 914                         GENL_SET_ERR_MSG(info, "key type out of range");
 915                         return -EINVAL;
 916                 }
 917         }
 918
 919         if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) {
 920                 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
 921                 int err = nla_parse_nested(kdt,
 922                                            NUM_NL80211_KEY_DEFAULT_TYPES - 1,
 923                                            info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES],
 924                                            nl80211_key_default_policy,
 925                                            info->extack);
 926                 if (err)
 927                         return err;
 928
 929                 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
 930                 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
 931         }
 932
 933         return 0;
 934 }
 935
 936 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
 937 {
 938         int err;
 939
 940         memset(k, 0, sizeof(*k));
 941         k->idx = -1;
 942         k->type = -1;
 943
 944         if (info->attrs[NL80211_ATTR_KEY])
 945                 err = nl80211_parse_key_new(info, info->attrs[NL80211_ATTR_KEY], k);
 946         else
 947                 err = nl80211_parse_key_old(info, k);
 948
 949         if (err)
 950                 return err;
 951
 952         if (k->def && k->defmgmt) {
 953                 GENL_SET_ERR_MSG(info, "key with def && defmgmt is invalid");
 954                 return -EINVAL;
 955         }
 956
 957         if (k->defmgmt) {
 958                 if (k->def_uni || !k->def_multi) {
 959                         GENL_SET_ERR_MSG(info, "defmgmt key must be mcast");
 960                         return -EINVAL;
 961                 }
 962         }
 963
 964         if (k->idx != -1) {
 965                 if (k->defmgmt) {
 966                         if (k->idx < 4 || k->idx > 5) {
 967                                 GENL_SET_ERR_MSG(info,
 968                                                  "defmgmt key idx not 4 or 5");
 969                                 return -EINVAL;
 970                         }
 971                 } else if (k->def) {
 972                         if (k->idx < 0 || k->idx > 3) {
 973                                 GENL_SET_ERR_MSG(info, "def key idx not 0-3");
 974                                 return -EINVAL;
 975                         }
 976                 } else {
 977                         if (k->idx < 0 || k->idx > 5) {
 978                                 GENL_SET_ERR_MSG(info, "key idx not 0-5");
 979                                 return -EINVAL;
 980                         }
 981                 }
 982         }
 983
 984         return 0;
 985 }
 986
 987 static struct cfg80211_cached_keys *
 988 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
 989                        struct genl_info *info, bool *no_ht)
 990 {
 991         struct nlattr *keys = info->attrs[NL80211_ATTR_KEYS];
 992         struct key_parse parse;
 993         struct nlattr *key;
 994         struct cfg80211_cached_keys *result;
 995         int rem, err, def = 0;
 996         bool have_key = false;
 997
 998         nla_for_each_nested(key, keys, rem) {
 999                 have_key = true;
1000                 break;
1001         }
1002
1003         if (!have_key)
1004                 return NULL;
1005
1006         result = kzalloc(sizeof(*result), GFP_KERNEL);
1007         if (!result)
1008                 return ERR_PTR(-ENOMEM);
1009
1010         result->def = -1;
1011
1012         nla_for_each_nested(key, keys, rem) {
1013                 memset(&parse, 0, sizeof(parse));
1014                 parse.idx = -1;
1015
1016                 err = nl80211_parse_key_new(info, key, &parse);
1017                 if (err)
1018                         goto error;
1019                 err = -EINVAL;
1020                 if (!parse.p.key)
1021                         goto error;
1022                 if (parse.idx < 0 || parse.idx > 3) {
1023                         GENL_SET_ERR_MSG(info, "key index out of range [0-3]");
1024                         goto error;
1025                 }
1026                 if (parse.def) {
1027                         if (def) {
1028                                 GENL_SET_ERR_MSG(info,
1029                                                  "only one key can be default");
1030                                 goto error;
1031                         }
1032                         def = 1;
1033                         result->def = parse.idx;
1034                         if (!parse.def_uni || !parse.def_multi)
1035                                 goto error;
1036                 } else if (parse.defmgmt)
1037                         goto error;
1038                 err = cfg80211_validate_key_settings(rdev, &parse.p,
1039                                                      parse.idx, false, NULL);
1040                 if (err)
1041                         goto error;
1042                 if (parse.p.cipher != WLAN_CIPHER_SUITE_WEP40 &&
1043                     parse.p.cipher != WLAN_CIPHER_SUITE_WEP104) {
1044                         GENL_SET_ERR_MSG(info, "connect key must be WEP");
1045                         err = -EINVAL;
1046                         goto error;
1047                 }
1048                 result->params[parse.idx].cipher = parse.p.cipher;
1049                 result->params[parse.idx].key_len = parse.p.key_len;
1050                 result->params[parse.idx].key = result->data[parse.idx];
1051                 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
1052
1053                 /* must be WEP key if we got here */
1054                 if (no_ht)
1055                         *no_ht = true;
1056         }
1057
1058         if (result->def < 0) {
1059                 err = -EINVAL;
1060                 GENL_SET_ERR_MSG(info, "need a default/TX key");
1061                 goto error;
1062         }
1063
1064         return result;
1065  error:
1066         kfree(result);
1067         return ERR_PTR(err);
1068 }
1069
1070 static int nl80211_key_allowed(struct wireless_dev *wdev)
1071 {
1072         ASSERT_WDEV_LOCK(wdev);
1073
1074         switch (wdev->iftype) {
1075         case NL80211_IFTYPE_AP:
1076         case NL80211_IFTYPE_AP_VLAN:
1077         case NL80211_IFTYPE_P2P_GO:
1078         case NL80211_IFTYPE_MESH_POINT:
1079                 break;
1080         case NL80211_IFTYPE_ADHOC:
1081         case NL80211_IFTYPE_STATION:
1082         case NL80211_IFTYPE_P2P_CLIENT:
1083                 if (!wdev->current_bss)
1084                         return -ENOLINK;
1085                 break;
1086         case NL80211_IFTYPE_UNSPECIFIED:
1087         case NL80211_IFTYPE_OCB:
1088         case NL80211_IFTYPE_MONITOR:
1089         case NL80211_IFTYPE_NAN:
1090         case NL80211_IFTYPE_P2P_DEVICE:
1091         case NL80211_IFTYPE_WDS:
1092         case NUM_NL80211_IFTYPES:
1093                 return -EINVAL;
1094         }
1095
1096         return 0;
1097 }
1098
1099 static struct ieee80211_channel *nl80211_get_valid_chan(struct wiphy *wiphy,
1100                                                         struct nlattr *tb)
1101 {
1102         struct ieee80211_channel *chan;
1103
1104         if (tb == NULL)
1105                 return NULL;
1106         chan = ieee80211_get_channel(wiphy, nla_get_u32(tb));
1107         if (!chan || chan->flags & IEEE80211_CHAN_DISABLED)
1108                 return NULL;
1109         return chan;
1110 }
1111
1112 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes)
1113 {
1114         struct nlattr *nl_modes = nla_nest_start(msg, attr);
1115         int i;
1116
1117         if (!nl_modes)
1118                 goto nla_put_failure;
1119
1120         i = 0;
1121         while (ifmodes) {
1122                 if ((ifmodes & 1) && nla_put_flag(msg, i))
1123                         goto nla_put_failure;
1124                 ifmodes >>= 1;
1125                 i++;
1126         }
1127
1128         nla_nest_end(msg, nl_modes);
1129         return 0;
1130
1131 nla_put_failure:
1132         return -ENOBUFS;
1133 }
1134
1135 static int nl80211_put_iface_combinations(struct wiphy *wiphy,
1136                                           struct sk_buff *msg,
1137                                           bool large)
1138 {
1139         struct nlattr *nl_combis;
1140         int i, j;
1141
1142         nl_combis = nla_nest_start(msg,
1143                                 NL80211_ATTR_INTERFACE_COMBINATIONS);
1144         if (!nl_combis)
1145                 goto nla_put_failure;
1146
1147         for (i = 0; i < wiphy->n_iface_combinations; i++) {
1148                 const struct ieee80211_iface_combination *c;
1149                 struct nlattr *nl_combi, *nl_limits;
1150
1151                 c = &wiphy->iface_combinations[i];
1152
1153                 nl_combi = nla_nest_start(msg, i + 1);
1154                 if (!nl_combi)
1155                         goto nla_put_failure;
1156
1157                 nl_limits = nla_nest_start(msg, NL80211_IFACE_COMB_LIMITS);
1158                 if (!nl_limits)
1159                         goto nla_put_failure;
1160
1161                 for (j = 0; j < c->n_limits; j++) {
1162                         struct nlattr *nl_limit;
1163
1164                         nl_limit = nla_nest_start(msg, j + 1);
1165                         if (!nl_limit)
1166                                 goto nla_put_failure;
1167                         if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX,
1168                                         c->limits[j].max))
1169                                 goto nla_put_failure;
1170                         if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES,
1171                                                 c->limits[j].types))
1172                                 goto nla_put_failure;
1173                         nla_nest_end(msg, nl_limit);
1174                 }
1175
1176                 nla_nest_end(msg, nl_limits);
1177
1178                 if (c->beacon_int_infra_match &&
1179                     nla_put_flag(msg, NL80211_IFACE_COMB_STA_AP_BI_MATCH))
1180                         goto nla_put_failure;
1181                 if (nla_put_u32(msg, NL80211_IFACE_COMB_NUM_CHANNELS,
1182                                 c->num_different_channels) ||
1183                     nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM,
1184                                 c->max_interfaces))
1185                         goto nla_put_failure;
1186                 if (large &&
1187                     (nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS,
1188                                 c->radar_detect_widths) ||
1189                      nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_REGIONS,
1190                                 c->radar_detect_regions)))
1191                         goto nla_put_failure;
1192                 if (c->beacon_int_min_gcd &&
1193                     nla_put_u32(msg, NL80211_IFACE_COMB_BI_MIN_GCD,
1194                                 c->beacon_int_min_gcd))
1195                         goto nla_put_failure;
1196
1197                 nla_nest_end(msg, nl_combi);
1198         }
1199
1200         nla_nest_end(msg, nl_combis);
1201
1202         return 0;
1203 nla_put_failure:
1204         return -ENOBUFS;
1205 }
1206
1207 #ifdef CONFIG_PM
1208 static int nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device *rdev,
1209                                         struct sk_buff *msg)
1210 {
1211         const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan->tcp;
1212         struct nlattr *nl_tcp;
1213
1214         if (!tcp)
1215                 return 0;
1216
1217         nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
1218         if (!nl_tcp)
1219                 return -ENOBUFS;
1220
1221         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1222                         tcp->data_payload_max))
1223                 return -ENOBUFS;
1224
1225         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1226                         tcp->data_payload_max))
1227                 return -ENOBUFS;
1228
1229         if (tcp->seq && nla_put_flag(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ))
1230                 return -ENOBUFS;
1231
1232         if (tcp->tok && nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
1233                                 sizeof(*tcp->tok), tcp->tok))
1234                 return -ENOBUFS;
1235
1236         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
1237                         tcp->data_interval_max))
1238                 return -ENOBUFS;
1239
1240         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
1241                         tcp->wake_payload_max))
1242                 return -ENOBUFS;
1243
1244         nla_nest_end(msg, nl_tcp);
1245         return 0;
1246 }
1247
1248 static int nl80211_send_wowlan(struct sk_buff *msg,
1249                                struct cfg80211_registered_device *rdev,
1250                                bool large)
1251 {
1252         struct nlattr *nl_wowlan;
1253
1254         if (!rdev->wiphy.wowlan)
1255                 return 0;
1256
1257         nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED);
1258         if (!nl_wowlan)
1259                 return -ENOBUFS;
1260
1261         if (((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_ANY) &&
1262              nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
1263             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_DISCONNECT) &&
1264              nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
1265             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT) &&
1266              nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
1267             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) &&
1268              nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) ||
1269             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) &&
1270              nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
1271             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) &&
1272              nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
1273             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) &&
1274              nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
1275             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE) &&
1276              nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
1277                 return -ENOBUFS;
1278
1279         if (rdev->wiphy.wowlan->n_patterns) {
1280                 struct nl80211_pattern_support pat = {
1281                         .max_patterns = rdev->wiphy.wowlan->n_patterns,
1282                         .min_pattern_len = rdev->wiphy.wowlan->pattern_min_len,
1283                         .max_pattern_len = rdev->wiphy.wowlan->pattern_max_len,
1284                         .max_pkt_offset = rdev->wiphy.wowlan->max_pkt_offset,
1285                 };
1286
1287                 if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
1288                             sizeof(pat), &pat))
1289                         return -ENOBUFS;
1290         }
1291
1292         if ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_NET_DETECT) &&
1293             nla_put_u32(msg, NL80211_WOWLAN_TRIG_NET_DETECT,
1294                         rdev->wiphy.wowlan->max_nd_match_sets))
1295                 return -ENOBUFS;
1296
1297         if (large && nl80211_send_wowlan_tcp_caps(rdev, msg))
1298                 return -ENOBUFS;
1299
1300         nla_nest_end(msg, nl_wowlan);
1301
1302         return 0;
1303 }
1304 #endif
1305
1306 static int nl80211_send_coalesce(struct sk_buff *msg,
1307                                  struct cfg80211_registered_device *rdev)
1308 {
1309         struct nl80211_coalesce_rule_support rule;
1310
1311         if (!rdev->wiphy.coalesce)
1312                 return 0;
1313
1314         rule.max_rules = rdev->wiphy.coalesce->n_rules;
1315         rule.max_delay = rdev->wiphy.coalesce->max_delay;
1316         rule.pat.max_patterns = rdev->wiphy.coalesce->n_patterns;
1317         rule.pat.min_pattern_len = rdev->wiphy.coalesce->pattern_min_len;
1318         rule.pat.max_pattern_len = rdev->wiphy.coalesce->pattern_max_len;
1319         rule.pat.max_pkt_offset = rdev->wiphy.coalesce->max_pkt_offset;
1320
1321         if (nla_put(msg, NL80211_ATTR_COALESCE_RULE, sizeof(rule), &rule))
1322                 return -ENOBUFS;
1323
1324         return 0;
1325 }
1326
1327 static int nl80211_send_band_rateinfo(struct sk_buff *msg,
1328                                       struct ieee80211_supported_band *sband)
1329 {
1330         struct nlattr *nl_rates, *nl_rate;
1331         struct ieee80211_rate *rate;
1332         int i;
1333
1334         /* add HT info */
1335         if (sband->ht_cap.ht_supported &&
1336             (nla_put(msg, NL80211_BAND_ATTR_HT_MCS_SET,
1337                      sizeof(sband->ht_cap.mcs),
1338                      &sband->ht_cap.mcs) ||
1339              nla_put_u16(msg, NL80211_BAND_ATTR_HT_CAPA,
1340                          sband->ht_cap.cap) ||
1341              nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
1342                         sband->ht_cap.ampdu_factor) ||
1343              nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
1344                         sband->ht_cap.ampdu_density)))
1345                 return -ENOBUFS;
1346
1347         /* add VHT info */
1348         if (sband->vht_cap.vht_supported &&
1349             (nla_put(msg, NL80211_BAND_ATTR_VHT_MCS_SET,
1350                      sizeof(sband->vht_cap.vht_mcs),
1351                      &sband->vht_cap.vht_mcs) ||
1352              nla_put_u32(msg, NL80211_BAND_ATTR_VHT_CAPA,
1353                          sband->vht_cap.cap)))
1354                 return -ENOBUFS;
1355
1356         /* add bitrates */
1357         nl_rates = nla_nest_start(msg, NL80211_BAND_ATTR_RATES);
1358         if (!nl_rates)
1359                 return -ENOBUFS;
1360
1361         for (i = 0; i < sband->n_bitrates; i++) {
1362                 nl_rate = nla_nest_start(msg, i);
1363                 if (!nl_rate)
1364                         return -ENOBUFS;
1365
1366                 rate = &sband->bitrates[i];
1367                 if (nla_put_u32(msg, NL80211_BITRATE_ATTR_RATE,
1368                                 rate->bitrate))
1369                         return -ENOBUFS;
1370                 if ((rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) &&
1371                     nla_put_flag(msg,
1372                                  NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE))
1373                         return -ENOBUFS;
1374
1375                 nla_nest_end(msg, nl_rate);
1376         }
1377
1378         nla_nest_end(msg, nl_rates);
1379
1380         return 0;
1381 }
1382
1383 static int
1384 nl80211_send_mgmt_stypes(struct sk_buff *msg,
1385                          const struct ieee80211_txrx_stypes *mgmt_stypes)
1386 {
1387         u16 stypes;
1388         struct nlattr *nl_ftypes, *nl_ifs;
1389         enum nl80211_iftype ift;
1390         int i;
1391
1392         if (!mgmt_stypes)
1393                 return 0;
1394
1395         nl_ifs = nla_nest_start(msg, NL80211_ATTR_TX_FRAME_TYPES);
1396         if (!nl_ifs)
1397                 return -ENOBUFS;
1398
1399         for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1400                 nl_ftypes = nla_nest_start(msg, ift);
1401                 if (!nl_ftypes)
1402                         return -ENOBUFS;
1403                 i = 0;
1404                 stypes = mgmt_stypes[ift].tx;
1405                 while (stypes) {
1406                         if ((stypes & 1) &&
1407                             nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1408                                         (i << 4) | IEEE80211_FTYPE_MGMT))
1409                                 return -ENOBUFS;
1410                         stypes >>= 1;
1411                         i++;
1412                 }
1413                 nla_nest_end(msg, nl_ftypes);
1414         }
1415
1416         nla_nest_end(msg, nl_ifs);
1417
1418         nl_ifs = nla_nest_start(msg, NL80211_ATTR_RX_FRAME_TYPES);
1419         if (!nl_ifs)
1420                 return -ENOBUFS;
1421
1422         for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1423                 nl_ftypes = nla_nest_start(msg, ift);
1424                 if (!nl_ftypes)
1425                         return -ENOBUFS;
1426                 i = 0;
1427                 stypes = mgmt_stypes[ift].rx;
1428                 while (stypes) {
1429                         if ((stypes & 1) &&
1430                             nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1431                                         (i << 4) | IEEE80211_FTYPE_MGMT))
1432                                 return -ENOBUFS;
1433                         stypes >>= 1;
1434                         i++;
1435                 }
1436                 nla_nest_end(msg, nl_ftypes);
1437         }
1438         nla_nest_end(msg, nl_ifs);
1439
1440         return 0;
1441 }
1442
1443 #define CMD(op, n)                                                      \
1444          do {                                                           \
1445                 if (rdev->ops->op) {                                    \
1446                         i++;                                            \
1447                         if (nla_put_u32(msg, i, NL80211_CMD_ ## n))     \
1448                                 goto nla_put_failure;                   \
1449                 }                                                       \
1450         } while (0)
1451
1452 static int nl80211_add_commands_unsplit(struct cfg80211_registered_device *rdev,
1453                                         struct sk_buff *msg)
1454 {
1455         int i = 0;
1456
1457         /*
1458          * do *NOT* add anything into this function, new things need to be
1459          * advertised only to new versions of userspace that can deal with
1460          * the split (and they can't possibly care about new features...
1461          */
1462         CMD(add_virtual_intf, NEW_INTERFACE);
1463         CMD(change_virtual_intf, SET_INTERFACE);
1464         CMD(add_key, NEW_KEY);
1465         CMD(start_ap, START_AP);
1466         CMD(add_station, NEW_STATION);
1467         CMD(add_mpath, NEW_MPATH);
1468         CMD(update_mesh_config, SET_MESH_CONFIG);
1469         CMD(change_bss, SET_BSS);
1470         CMD(auth, AUTHENTICATE);
1471         CMD(assoc, ASSOCIATE);
1472         CMD(deauth, DEAUTHENTICATE);
1473         CMD(disassoc, DISASSOCIATE);
1474         CMD(join_ibss, JOIN_IBSS);
1475         CMD(join_mesh, JOIN_MESH);
1476         CMD(set_pmksa, SET_PMKSA);
1477         CMD(del_pmksa, DEL_PMKSA);
1478         CMD(flush_pmksa, FLUSH_PMKSA);
1479         if (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)
1480                 CMD(remain_on_channel, REMAIN_ON_CHANNEL);
1481         CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
1482         CMD(mgmt_tx, FRAME);
1483         CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL);
1484         if (rdev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
1485                 i++;
1486                 if (nla_put_u32(msg, i, NL80211_CMD_SET_WIPHY_NETNS))
1487                         goto nla_put_failure;
1488         }
1489         if (rdev->ops->set_monitor_channel || rdev->ops->start_ap ||
1490             rdev->ops->join_mesh) {
1491                 i++;
1492                 if (nla_put_u32(msg, i, NL80211_CMD_SET_CHANNEL))
1493                         goto nla_put_failure;
1494         }
1495         CMD(set_wds_peer, SET_WDS_PEER);
1496         if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) {
1497                 CMD(tdls_mgmt, TDLS_MGMT);
1498                 CMD(tdls_oper, TDLS_OPER);
1499         }
1500         if (rdev->wiphy.max_sched_scan_reqs)
1501                 CMD(sched_scan_start, START_SCHED_SCAN);
1502         CMD(probe_client, PROBE_CLIENT);
1503         CMD(set_noack_map, SET_NOACK_MAP);
1504         if (rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) {
1505                 i++;
1506                 if (nla_put_u32(msg, i, NL80211_CMD_REGISTER_BEACONS))
1507                         goto nla_put_failure;
1508         }
1509         CMD(start_p2p_device, START_P2P_DEVICE);
1510         CMD(set_mcast_rate, SET_MCAST_RATE);
1511 #ifdef CONFIG_NL80211_TESTMODE
1512         CMD(testmode_cmd, TESTMODE);
1513 #endif
1514
1515         if (rdev->ops->connect || rdev->ops->auth) {
1516                 i++;
1517                 if (nla_put_u32(msg, i, NL80211_CMD_CONNECT))
1518                         goto nla_put_failure;
1519         }
1520
1521         if (rdev->ops->disconnect || rdev->ops->deauth) {
1522                 i++;
1523                 if (nla_put_u32(msg, i, NL80211_CMD_DISCONNECT))
1524                         goto nla_put_failure;
1525         }
1526
1527         return i;
1528  nla_put_failure:
1529         return -ENOBUFS;
1530 }
1531
1532 struct nl80211_dump_wiphy_state {
1533         s64 filter_wiphy;
1534         long start;
1535         long split_start, band_start, chan_start, capa_start;
1536         bool split;
1537 };
1538
1539 static int nl80211_send_wiphy(struct cfg80211_registered_device *rdev,
1540                               enum nl80211_commands cmd,
1541                               struct sk_buff *msg, u32 portid, u32 seq,
1542                               int flags, struct nl80211_dump_wiphy_state *state)
1543 {
1544         void *hdr;
1545         struct nlattr *nl_bands, *nl_band;
1546         struct nlattr *nl_freqs, *nl_freq;
1547         struct nlattr *nl_cmds;
1548         enum nl80211_band band;
1549         struct ieee80211_channel *chan;
1550         int i;
1551         const struct ieee80211_txrx_stypes *mgmt_stypes =
1552                                 rdev->wiphy.mgmt_stypes;
1553         u32 features;
1554
1555         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
1556         if (!hdr)
1557                 return -ENOBUFS;
1558
1559         if (WARN_ON(!state))
1560                 return -EINVAL;
1561
1562         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
1563             nla_put_string(msg, NL80211_ATTR_WIPHY_NAME,
1564                            wiphy_name(&rdev->wiphy)) ||
1565             nla_put_u32(msg, NL80211_ATTR_GENERATION,
1566                         cfg80211_rdev_list_generation))
1567                 goto nla_put_failure;
1568
1569         if (cmd != NL80211_CMD_NEW_WIPHY)
1570                 goto finish;
1571
1572         switch (state->split_start) {
1573         case 0:
1574                 if (nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
1575                                rdev->wiphy.retry_short) ||
1576                     nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
1577                                rdev->wiphy.retry_long) ||
1578                     nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
1579                                 rdev->wiphy.frag_threshold) ||
1580                     nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
1581                                 rdev->wiphy.rts_threshold) ||
1582                     nla_put_u8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
1583                                rdev->wiphy.coverage_class) ||
1584                     nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
1585                                rdev->wiphy.max_scan_ssids) ||
1586                     nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS,
1587                                rdev->wiphy.max_sched_scan_ssids) ||
1588                     nla_put_u16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
1589                                 rdev->wiphy.max_scan_ie_len) ||
1590                     nla_put_u16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN,
1591                                 rdev->wiphy.max_sched_scan_ie_len) ||
1592                     nla_put_u8(msg, NL80211_ATTR_MAX_MATCH_SETS,
1593                                rdev->wiphy.max_match_sets) ||
1594                     nla_put_u32(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_PLANS,
1595                                 rdev->wiphy.max_sched_scan_plans) ||
1596                     nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_INTERVAL,
1597                                 rdev->wiphy.max_sched_scan_plan_interval) ||
1598                     nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_ITERATIONS,
1599                                 rdev->wiphy.max_sched_scan_plan_iterations))
1600                         goto nla_put_failure;
1601
1602                 if ((rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) &&
1603                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_IBSS_RSN))
1604                         goto nla_put_failure;
1605                 if ((rdev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) &&
1606                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_MESH_AUTH))
1607                         goto nla_put_failure;
1608                 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
1609                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_AP_UAPSD))
1610                         goto nla_put_failure;
1611                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) &&
1612                     nla_put_flag(msg, NL80211_ATTR_ROAM_SUPPORT))
1613                         goto nla_put_failure;
1614                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) &&
1615                     nla_put_flag(msg, NL80211_ATTR_TDLS_SUPPORT))
1616                         goto nla_put_failure;
1617                 if ((rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) &&
1618                     nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP))
1619                         goto nla_put_failure;
1620                 state->split_start++;
1621                 if (state->split)
1622                         break;
1623         case 1:
1624                 if (nla_put(msg, NL80211_ATTR_CIPHER_SUITES,
1625                             sizeof(u32) * rdev->wiphy.n_cipher_suites,
1626                             rdev->wiphy.cipher_suites))
1627                         goto nla_put_failure;
1628
1629                 if (nla_put_u8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
1630                                rdev->wiphy.max_num_pmkids))
1631                         goto nla_put_failure;
1632
1633                 if ((rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
1634                     nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE))
1635                         goto nla_put_failure;
1636
1637                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX,
1638                                 rdev->wiphy.available_antennas_tx) ||
1639                     nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX,
1640                                 rdev->wiphy.available_antennas_rx))
1641                         goto nla_put_failure;
1642
1643                 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) &&
1644                     nla_put_u32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD,
1645                                 rdev->wiphy.probe_resp_offload))
1646                         goto nla_put_failure;
1647
1648                 if ((rdev->wiphy.available_antennas_tx ||
1649                      rdev->wiphy.available_antennas_rx) &&
1650                     rdev->ops->get_antenna) {
1651                         u32 tx_ant = 0, rx_ant = 0;
1652                         int res;
1653
1654                         res = rdev_get_antenna(rdev, &tx_ant, &rx_ant);
1655                         if (!res) {
1656                                 if (nla_put_u32(msg,
1657                                                 NL80211_ATTR_WIPHY_ANTENNA_TX,
1658                                                 tx_ant) ||
1659                                     nla_put_u32(msg,
1660                                                 NL80211_ATTR_WIPHY_ANTENNA_RX,
1661                                                 rx_ant))
1662                                         goto nla_put_failure;
1663                         }
1664                 }
1665
1666                 state->split_start++;
1667                 if (state->split)
1668                         break;
1669         case 2:
1670                 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES,
1671                                         rdev->wiphy.interface_modes))
1672                                 goto nla_put_failure;
1673                 state->split_start++;
1674                 if (state->split)
1675                         break;
1676         case 3:
1677                 nl_bands = nla_nest_start(msg, NL80211_ATTR_WIPHY_BANDS);
1678                 if (!nl_bands)
1679                         goto nla_put_failure;
1680
1681                 for (band = state->band_start;
1682                      band < NUM_NL80211_BANDS; band++) {
1683                         struct ieee80211_supported_band *sband;
1684
1685                         sband = rdev->wiphy.bands[band];
1686
1687                         if (!sband)
1688                                 continue;
1689
1690                         nl_band = nla_nest_start(msg, band);
1691                         if (!nl_band)
1692                                 goto nla_put_failure;
1693
1694                         switch (state->chan_start) {
1695                         case 0:
1696                                 if (nl80211_send_band_rateinfo(msg, sband))
1697                                         goto nla_put_failure;
1698                                 state->chan_start++;
1699                                 if (state->split)
1700                                         break;
1701                         default:
1702                                 /* add frequencies */
1703                                 nl_freqs = nla_nest_start(
1704                                         msg, NL80211_BAND_ATTR_FREQS);
1705                                 if (!nl_freqs)
1706                                         goto nla_put_failure;
1707
1708                                 for (i = state->chan_start - 1;
1709                                      i < sband->n_channels;
1710                                      i++) {
1711                                         nl_freq = nla_nest_start(msg, i);
1712                                         if (!nl_freq)
1713                                                 goto nla_put_failure;
1714
1715                                         chan = &sband->channels[i];
1716
1717                                         if (nl80211_msg_put_channel(
1718                                                         msg, &rdev->wiphy, chan,
1719                                                         state->split))
1720                                                 goto nla_put_failure;
1721
1722                                         nla_nest_end(msg, nl_freq);
1723                                         if (state->split)
1724                                                 break;
1725                                 }
1726                                 if (i < sband->n_channels)
1727                                         state->chan_start = i + 2;
1728                                 else
1729                                         state->chan_start = 0;
1730                                 nla_nest_end(msg, nl_freqs);
1731                         }
1732
1733                         nla_nest_end(msg, nl_band);
1734
1735                         if (state->split) {
1736                                 /* start again here */
1737                                 if (state->chan_start)
1738                                         band--;
1739                                 break;
1740                         }
1741                 }
1742                 nla_nest_end(msg, nl_bands);
1743
1744                 if (band < NUM_NL80211_BANDS)
1745                         state->band_start = band + 1;
1746                 else
1747                         state->band_start = 0;
1748
1749                 /* if bands & channels are done, continue outside */
1750                 if (state->band_start == 0 && state->chan_start == 0)
1751                         state->split_start++;
1752                 if (state->split)
1753                         break;
1754         case 4:
1755                 nl_cmds = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_COMMANDS);
1756                 if (!nl_cmds)
1757                         goto nla_put_failure;
1758
1759                 i = nl80211_add_commands_unsplit(rdev, msg);
1760                 if (i < 0)
1761                         goto nla_put_failure;
1762                 if (state->split) {
1763                         CMD(crit_proto_start, CRIT_PROTOCOL_START);
1764                         CMD(crit_proto_stop, CRIT_PROTOCOL_STOP);
1765                         if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH)
1766                                 CMD(channel_switch, CHANNEL_SWITCH);
1767                         CMD(set_qos_map, SET_QOS_MAP);
1768                         if (rdev->wiphy.features &
1769                                         NL80211_FEATURE_SUPPORTS_WMM_ADMISSION)
1770                                 CMD(add_tx_ts, ADD_TX_TS);
1771                         CMD(set_multicast_to_unicast, SET_MULTICAST_TO_UNICAST);
1772                         CMD(update_connect_params, UPDATE_CONNECT_PARAMS);
1773                 }
1774 #undef CMD
1775
1776                 nla_nest_end(msg, nl_cmds);
1777                 state->split_start++;
1778                 if (state->split)
1779                         break;
1780         case 5:
1781                 if (rdev->ops->remain_on_channel &&
1782                     (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) &&
1783                     nla_put_u32(msg,
1784                                 NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
1785                                 rdev->wiphy.max_remain_on_channel_duration))
1786                         goto nla_put_failure;
1787
1788                 if ((rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) &&
1789                     nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK))
1790                         goto nla_put_failure;
1791
1792                 if (nl80211_send_mgmt_stypes(msg, mgmt_stypes))
1793                         goto nla_put_failure;
1794                 state->split_start++;
1795                 if (state->split)
1796                         break;
1797         case 6:
1798 #ifdef CONFIG_PM
1799                 if (nl80211_send_wowlan(msg, rdev, state->split))
1800                         goto nla_put_failure;
1801                 state->split_start++;
1802                 if (state->split)
1803                         break;
1804 #else
1805                 state->split_start++;
1806 #endif
1807         case 7:
1808                 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES,
1809                                         rdev->wiphy.software_iftypes))
1810                         goto nla_put_failure;
1811
1812                 if (nl80211_put_iface_combinations(&rdev->wiphy, msg,
1813                                                    state->split))
1814                         goto nla_put_failure;
1815
1816                 state->split_start++;
1817                 if (state->split)
1818                         break;
1819         case 8:
1820                 if ((rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) &&
1821                     nla_put_u32(msg, NL80211_ATTR_DEVICE_AP_SME,
1822                                 rdev->wiphy.ap_sme_capa))
1823                         goto nla_put_failure;
1824
1825                 features = rdev->wiphy.features;
1826                 /*
1827                  * We can only add the per-channel limit information if the
1828                  * dump is split, otherwise it makes it too big. Therefore
1829                  * only advertise it in that case.
1830                  */
1831                 if (state->split)
1832                         features |= NL80211_FEATURE_ADVERTISE_CHAN_LIMITS;
1833                 if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS, features))
1834                         goto nla_put_failure;
1835
1836                 if (rdev->wiphy.ht_capa_mod_mask &&
1837                     nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK,
1838                             sizeof(*rdev->wiphy.ht_capa_mod_mask),
1839                             rdev->wiphy.ht_capa_mod_mask))
1840                         goto nla_put_failure;
1841
1842                 if (rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME &&
1843                     rdev->wiphy.max_acl_mac_addrs &&
1844                     nla_put_u32(msg, NL80211_ATTR_MAC_ACL_MAX,
1845                                 rdev->wiphy.max_acl_mac_addrs))
1846                         goto nla_put_failure;
1847
1848                 /*
1849                  * Any information below this point is only available to
1850                  * applications that can deal with it being split. This
1851                  * helps ensure that newly added capabilities don't break
1852                  * older tools by overrunning their buffers.
1853                  *
1854                  * We still increment split_start so that in the split
1855                  * case we'll continue with more data in the next round,
1856                  * but break unconditionally so unsplit data stops here.
1857                  */
1858                 state->split_start++;
1859                 break;
1860         case 9:
1861                 if (rdev->wiphy.extended_capabilities &&
1862                     (nla_put(msg, NL80211_ATTR_EXT_CAPA,
1863                              rdev->wiphy.extended_capabilities_len,
1864                              rdev->wiphy.extended_capabilities) ||
1865                      nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
1866                              rdev->wiphy.extended_capabilities_len,
1867                              rdev->wiphy.extended_capabilities_mask)))
1868                         goto nla_put_failure;
1869
1870                 if (rdev->wiphy.vht_capa_mod_mask &&
1871                     nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK,
1872                             sizeof(*rdev->wiphy.vht_capa_mod_mask),
1873                             rdev->wiphy.vht_capa_mod_mask))
1874                         goto nla_put_failure;
1875
1876                 state->split_start++;
1877                 break;
1878         case 10:
1879                 if (nl80211_send_coalesce(msg, rdev))
1880                         goto nla_put_failure;
1881
1882                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ) &&
1883                     (nla_put_flag(msg, NL80211_ATTR_SUPPORT_5_MHZ) ||
1884                      nla_put_flag(msg, NL80211_ATTR_SUPPORT_10_MHZ)))
1885                         goto nla_put_failure;
1886
1887                 if (rdev->wiphy.max_ap_assoc_sta &&
1888                     nla_put_u32(msg, NL80211_ATTR_MAX_AP_ASSOC_STA,
1889                                 rdev->wiphy.max_ap_assoc_sta))
1890                         goto nla_put_failure;
1891
1892                 state->split_start++;
1893                 break;
1894         case 11:
1895                 if (rdev->wiphy.n_vendor_commands) {
1896                         const struct nl80211_vendor_cmd_info *info;
1897                         struct nlattr *nested;
1898
1899                         nested = nla_nest_start(msg, NL80211_ATTR_VENDOR_DATA);
1900                         if (!nested)
1901                                 goto nla_put_failure;
1902
1903                         for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
1904                                 info = &rdev->wiphy.vendor_commands[i].info;
1905                                 if (nla_put(msg, i + 1, sizeof(*info), info))
1906                                         goto nla_put_failure;
1907                         }
1908                         nla_nest_end(msg, nested);
1909                 }
1910
1911                 if (rdev->wiphy.n_vendor_events) {
1912                         const struct nl80211_vendor_cmd_info *info;
1913                         struct nlattr *nested;
1914
1915                         nested = nla_nest_start(msg,
1916                                                 NL80211_ATTR_VENDOR_EVENTS);
1917                         if (!nested)
1918                                 goto nla_put_failure;
1919
1920                         for (i = 0; i < rdev->wiphy.n_vendor_events; i++) {
1921                                 info = &rdev->wiphy.vendor_events[i];
1922                                 if (nla_put(msg, i + 1, sizeof(*info), info))
1923                                         goto nla_put_failure;
1924                         }
1925                         nla_nest_end(msg, nested);
1926                 }
1927                 state->split_start++;
1928                 break;
1929         case 12:
1930                 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH &&
1931                     nla_put_u8(msg, NL80211_ATTR_MAX_CSA_COUNTERS,
1932                                rdev->wiphy.max_num_csa_counters))
1933                         goto nla_put_failure;
1934
1935                 if (rdev->wiphy.regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
1936                     nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
1937                         goto nla_put_failure;
1938
1939                 if (rdev->wiphy.max_sched_scan_reqs &&
1940                     nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_MAX_REQS,
1941                                 rdev->wiphy.max_sched_scan_reqs))
1942                         goto nla_put_failure;
1943
1944                 if (nla_put(msg, NL80211_ATTR_EXT_FEATURES,
1945                             sizeof(rdev->wiphy.ext_features),
1946                             rdev->wiphy.ext_features))
1947                         goto nla_put_failure;
1948
1949                 if (rdev->wiphy.bss_select_support) {
1950                         struct nlattr *nested;
1951                         u32 bss_select_support = rdev->wiphy.bss_select_support;
1952
1953                         nested = nla_nest_start(msg, NL80211_ATTR_BSS_SELECT);
1954                         if (!nested)
1955                                 goto nla_put_failure;
1956
1957                         i = 0;
1958                         while (bss_select_support) {
1959                                 if ((bss_select_support & 1) &&
1960                                     nla_put_flag(msg, i))
1961                                         goto nla_put_failure;
1962                                 i++;
1963                                 bss_select_support >>= 1;
1964                         }
1965                         nla_nest_end(msg, nested);
1966                 }
1967
1968                 state->split_start++;
1969                 break;
1970         case 13:
1971                 if (rdev->wiphy.num_iftype_ext_capab &&
1972                     rdev->wiphy.iftype_ext_capab) {
1973                         struct nlattr *nested_ext_capab, *nested;
1974
1975                         nested = nla_nest_start(msg,
1976                                                 NL80211_ATTR_IFTYPE_EXT_CAPA);
1977                         if (!nested)
1978                                 goto nla_put_failure;
1979
1980                         for (i = state->capa_start;
1981                              i < rdev->wiphy.num_iftype_ext_capab; i++) {
1982                                 const struct wiphy_iftype_ext_capab *capab;
1983
1984                                 capab = &rdev->wiphy.iftype_ext_capab[i];
1985
1986                                 nested_ext_capab = nla_nest_start(msg, i);
1987                                 if (!nested_ext_capab ||
1988                                     nla_put_u32(msg, NL80211_ATTR_IFTYPE,
1989                                                 capab->iftype) ||
1990                                     nla_put(msg, NL80211_ATTR_EXT_CAPA,
1991                                             capab->extended_capabilities_len,
1992                                             capab->extended_capabilities) ||
1993                                     nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
1994                                             capab->extended_capabilities_len,
1995                                             capab->extended_capabilities_mask))
1996                                         goto nla_put_failure;
1997
1998                                 nla_nest_end(msg, nested_ext_capab);
1999                                 if (state->split)
2000                                         break;
2001                         }
2002                         nla_nest_end(msg, nested);
2003                         if (i < rdev->wiphy.num_iftype_ext_capab) {
2004                                 state->capa_start = i + 1;
2005                                 break;
2006                         }
2007                 }
2008
2009                 if (nla_put_u32(msg, NL80211_ATTR_BANDS,
2010                                 rdev->wiphy.nan_supported_bands))
2011                         goto nla_put_failure;
2012
2013                 if (wiphy_ext_feature_isset(&rdev->wiphy,
2014                                             NL80211_EXT_FEATURE_TXQS)) {
2015                         struct cfg80211_txq_stats txqstats = {};
2016                         int res;
2017
2018                         res = rdev_get_txq_stats(rdev, NULL, &txqstats);
2019                         if (!res &&
2020                             !nl80211_put_txq_stats(msg, &txqstats,
2021                                                    NL80211_ATTR_TXQ_STATS))
2022                                 goto nla_put_failure;
2023
2024                         if (nla_put_u32(msg, NL80211_ATTR_TXQ_LIMIT,
2025                                         rdev->wiphy.txq_limit))
2026                                 goto nla_put_failure;
2027                         if (nla_put_u32(msg, NL80211_ATTR_TXQ_MEMORY_LIMIT,
2028                                         rdev->wiphy.txq_memory_limit))
2029                                 goto nla_put_failure;
2030                         if (nla_put_u32(msg, NL80211_ATTR_TXQ_QUANTUM,
2031                                         rdev->wiphy.txq_quantum))
2032                                 goto nla_put_failure;
2033                 }
2034
2035                 /* done */
2036                 state->split_start = 0;
2037                 break;
2038         }
2039  finish:
2040         genlmsg_end(msg, hdr);
2041         return 0;
2042
2043  nla_put_failure:
2044         genlmsg_cancel(msg, hdr);
2045         return -EMSGSIZE;
2046 }
2047
2048 static int nl80211_dump_wiphy_parse(struct sk_buff *skb,
2049                                     struct netlink_callback *cb,
2050                                     struct nl80211_dump_wiphy_state *state)
2051 {
2052         struct nlattr **tb = genl_family_attrbuf(&nl80211_fam);
2053         int ret = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize, tb,
2054                               nl80211_fam.maxattr, nl80211_policy, NULL);
2055         /* ignore parse errors for backward compatibility */
2056         if (ret)
2057                 return 0;
2058
2059         state->split = tb[NL80211_ATTR_SPLIT_WIPHY_DUMP];
2060         if (tb[NL80211_ATTR_WIPHY])
2061                 state->filter_wiphy = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
2062         if (tb[NL80211_ATTR_WDEV])
2063                 state->filter_wiphy = nla_get_u64(tb[NL80211_ATTR_WDEV]) >> 32;
2064         if (tb[NL80211_ATTR_IFINDEX]) {
2065                 struct net_device *netdev;
2066                 struct cfg80211_registered_device *rdev;
2067                 int ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
2068
2069                 netdev = __dev_get_by_index(sock_net(skb->sk), ifidx);
2070                 if (!netdev)
2071                         return -ENODEV;
2072                 if (netdev->ieee80211_ptr) {
2073                         rdev = wiphy_to_rdev(
2074                                 netdev->ieee80211_ptr->wiphy);
2075                         state->filter_wiphy = rdev->wiphy_idx;
2076                 }
2077         }
2078
2079         return 0;
2080 }
2081
2082 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
2083 {
2084         int idx = 0, ret;
2085         struct nl80211_dump_wiphy_state *state = (void *)cb->args[0];
2086         struct cfg80211_registered_device *rdev;
2087
2088         rtnl_lock();
2089         if (!state) {
2090                 state = kzalloc(sizeof(*state), GFP_KERNEL);
2091                 if (!state) {
2092                         rtnl_unlock();
2093                         return -ENOMEM;
2094                 }
2095                 state->filter_wiphy = -1;
2096                 ret = nl80211_dump_wiphy_parse(skb, cb, state);
2097                 if (ret) {
2098                         kfree(state);
2099                         rtnl_unlock();
2100                         return ret;
2101                 }
2102                 cb->args[0] = (long)state;
2103         }
2104
2105         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
2106                 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
2107                         continue;
2108                 if (++idx <= state->start)
2109                         continue;
2110                 if (state->filter_wiphy != -1 &&
2111                     state->filter_wiphy != rdev->wiphy_idx)
2112                         continue;
2113                 /* attempt to fit multiple wiphy data chunks into the skb */
2114                 do {
2115                         ret = nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY,
2116                                                  skb,
2117                                                  NETLINK_CB(cb->skb).portid,
2118                                                  cb->nlh->nlmsg_seq,
2119                                                  NLM_F_MULTI, state);
2120                         if (ret < 0) {
2121                                 /*
2122                                  * If sending the wiphy data didn't fit (ENOBUFS
2123                                  * or EMSGSIZE returned), this SKB is still
2124                                  * empty (so it's not too big because another
2125                                  * wiphy dataset is already in the skb) and
2126                                  * we've not tried to adjust the dump allocation
2127                                  * yet ... then adjust the alloc size to be
2128                                  * bigger, and return 1 but with the empty skb.
2129                                  * This results in an empty message being RX'ed
2130                                  * in userspace, but that is ignored.
2131                                  *
2132                                  * We can then retry with the larger buffer.
2133                                  */
2134                                 if ((ret == -ENOBUFS || ret == -EMSGSIZE) &&
2135                                     !skb->len && !state->split &&
2136                                     cb->min_dump_alloc < 4096) {
2137                                         cb->min_dump_alloc = 4096;
2138                                         state->split_start = 0;
2139                                         rtnl_unlock();
2140                                         return 1;
2141                                 }
2142                                 idx--;
2143                                 break;
2144                         }
2145                 } while (state->split_start > 0);
2146                 break;
2147         }
2148         rtnl_unlock();
2149
2150         state->start = idx;
2151
2152         return skb->len;
2153 }
2154
2155 static int nl80211_dump_wiphy_done(struct netlink_callback *cb)
2156 {
2157         kfree((void *)cb->args[0]);
2158         return 0;
2159 }
2160
2161 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
2162 {
2163         struct sk_buff *msg;
2164         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2165         struct nl80211_dump_wiphy_state state = {};
2166
2167         msg = nlmsg_new(4096, GFP_KERNEL);
2168         if (!msg)
2169                 return -ENOMEM;
2170
2171         if (nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY, msg,
2172                                info->snd_portid, info->snd_seq, 0,
2173                                &state) < 0) {
2174                 nlmsg_free(msg);
2175                 return -ENOBUFS;
2176         }
2177
2178         return genlmsg_reply(msg, info);
2179 }
2180
2181 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
2182         [NL80211_TXQ_ATTR_QUEUE]                = { .type = NLA_U8 },
2183         [NL80211_TXQ_ATTR_TXOP]                 = { .type = NLA_U16 },
2184         [NL80211_TXQ_ATTR_CWMIN]                = { .type = NLA_U16 },
2185         [NL80211_TXQ_ATTR_CWMAX]                = { .type = NLA_U16 },
2186         [NL80211_TXQ_ATTR_AIFS]                 = { .type = NLA_U8 },
2187 };
2188
2189 static int parse_txq_params(struct nlattr *tb[],
2190                             struct ieee80211_txq_params *txq_params)
2191 {
2192         u8 ac;
2193
2194         if (!tb[NL80211_TXQ_ATTR_AC] || !tb[NL80211_TXQ_ATTR_TXOP] ||
2195             !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
2196             !tb[NL80211_TXQ_ATTR_AIFS])
2197                 return -EINVAL;
2198
2199         ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]);
2200         txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
2201         txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
2202         txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
2203         txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
2204
2205         if (ac >= NL80211_NUM_ACS)
2206                 return -EINVAL;
2207         txq_params->ac = array_index_nospec(ac, NL80211_NUM_ACS);
2208         return 0;
2209 }
2210
2211 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
2212 {
2213         /*
2214          * You can only set the channel explicitly for WDS interfaces,
2215          * all others have their channel managed via their respective
2216          * "establish a connection" command (connect, join, ...)
2217          *
2218          * For AP/GO and mesh mode, the channel can be set with the
2219          * channel userspace API, but is only stored and passed to the
2220          * low-level driver when the AP starts or the mesh is joined.
2221          * This is for backward compatibility, userspace can also give
2222          * the channel in the start-ap or join-mesh commands instead.
2223          *
2224          * Monitors are special as they are normally slaved to
2225          * whatever else is going on, so they have their own special
2226          * operation to set the monitor channel if possible.
2227          */
2228         return !wdev ||
2229                 wdev->iftype == NL80211_IFTYPE_AP ||
2230                 wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
2231                 wdev->iftype == NL80211_IFTYPE_MONITOR ||
2232                 wdev->iftype == NL80211_IFTYPE_P2P_GO;
2233 }
2234
2235 static int nl80211_parse_chandef(struct cfg80211_registered_device *rdev,
2236                                  struct genl_info *info,
2237                                  struct cfg80211_chan_def *chandef)
2238 {
2239         u32 control_freq;
2240
2241         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
2242                 return -EINVAL;
2243
2244         control_freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
2245
2246         chandef->chan = ieee80211_get_channel(&rdev->wiphy, control_freq);
2247         chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
2248         chandef->center_freq1 = control_freq;
2249         chandef->center_freq2 = 0;
2250
2251         /* Primary channel not allowed */
2252         if (!chandef->chan || chandef->chan->flags & IEEE80211_CHAN_DISABLED)
2253                 return -EINVAL;
2254
2255         if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
2256                 enum nl80211_channel_type chantype;
2257
2258                 chantype = nla_get_u32(
2259                                 info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
2260
2261                 switch (chantype) {
2262                 case NL80211_CHAN_NO_HT:
2263                 case NL80211_CHAN_HT20:
2264                 case NL80211_CHAN_HT40PLUS:
2265                 case NL80211_CHAN_HT40MINUS:
2266                         cfg80211_chandef_create(chandef, chandef->chan,
2267                                                 chantype);
2268                         /* user input for center_freq is incorrect */
2269                         if (info->attrs[NL80211_ATTR_CENTER_FREQ1] &&
2270                             chandef->center_freq1 != nla_get_u32(
2271                                         info->attrs[NL80211_ATTR_CENTER_FREQ1]))
2272                                 return -EINVAL;
2273                         /* center_freq2 must be zero */
2274                         if (info->attrs[NL80211_ATTR_CENTER_FREQ2] &&
2275                             nla_get_u32(info->attrs[NL80211_ATTR_CENTER_FREQ2]))
2276                                 return -EINVAL;
2277                         break;
2278                 default:
2279                         return -EINVAL;
2280                 }
2281         } else if (info->attrs[NL80211_ATTR_CHANNEL_WIDTH]) {
2282                 chandef->width =
2283                         nla_get_u32(info->attrs[NL80211_ATTR_CHANNEL_WIDTH]);
2284                 if (info->attrs[NL80211_ATTR_CENTER_FREQ1])
2285                         chandef->center_freq1 =
2286                                 nla_get_u32(
2287                                         info->attrs[NL80211_ATTR_CENTER_FREQ1]);
2288                 if (info->attrs[NL80211_ATTR_CENTER_FREQ2])
2289                         chandef->center_freq2 =
2290                                 nla_get_u32(
2291                                         info->attrs[NL80211_ATTR_CENTER_FREQ2]);
2292         }
2293
2294         if (!cfg80211_chandef_valid(chandef))
2295                 return -EINVAL;
2296
2297         if (!cfg80211_chandef_usable(&rdev->wiphy, chandef,
2298                                      IEEE80211_CHAN_DISABLED))
2299                 return -EINVAL;
2300
2301         if ((chandef->width == NL80211_CHAN_WIDTH_5 ||
2302              chandef->width == NL80211_CHAN_WIDTH_10) &&
2303             !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ))
2304                 return -EINVAL;
2305
2306         return 0;
2307 }
2308
2309 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
2310                                  struct net_device *dev,
2311                                  struct genl_info *info)
2312 {
2313         struct cfg80211_chan_def chandef;
2314         int result;
2315         enum nl80211_iftype iftype = NL80211_IFTYPE_MONITOR;
2316         struct wireless_dev *wdev = NULL;
2317
2318         if (dev)
2319                 wdev = dev->ieee80211_ptr;
2320         if (!nl80211_can_set_dev_channel(wdev))
2321                 return -EOPNOTSUPP;
2322         if (wdev)
2323                 iftype = wdev->iftype;
2324
2325         result = nl80211_parse_chandef(rdev, info, &chandef);
2326         if (result)
2327                 return result;
2328
2329         switch (iftype) {
2330         case NL80211_IFTYPE_AP:
2331         case NL80211_IFTYPE_P2P_GO:
2332                 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
2333                                                    iftype)) {
2334                         result = -EINVAL;
2335                         break;
2336                 }
2337                 if (wdev->beacon_interval) {
2338                         if (!dev || !rdev->ops->set_ap_chanwidth ||
2339                             !(rdev->wiphy.features &
2340                               NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE)) {
2341                                 result = -EBUSY;
2342                                 break;
2343                         }
2344
2345                         /* Only allow dynamic channel width changes */
2346                         if (chandef.chan != wdev->preset_chandef.chan) {
2347                                 result = -EBUSY;
2348                                 break;
2349                         }
2350                         result = rdev_set_ap_chanwidth(rdev, dev, &chandef);
2351                         if (result)
2352                                 break;
2353                 }
2354                 wdev->preset_chandef = chandef;
2355                 result = 0;
2356                 break;
2357         case NL80211_IFTYPE_MESH_POINT:
2358                 result = cfg80211_set_mesh_channel(rdev, wdev, &chandef);
2359                 break;
2360         case NL80211_IFTYPE_MONITOR:
2361                 result = cfg80211_set_monitor_channel(rdev, &chandef);
2362                 break;
2363         default:
2364                 result = -EINVAL;
2365         }
2366
2367         return result;
2368 }
2369
2370 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
2371 {
2372         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2373         struct net_device *netdev = info->user_ptr[1];
2374
2375         return __nl80211_set_channel(rdev, netdev, info);
2376 }
2377
2378 static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info)
2379 {
2380         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2381         struct net_device *dev = info->user_ptr[1];
2382         struct wireless_dev *wdev = dev->ieee80211_ptr;
2383         const u8 *bssid;
2384
2385         if (!info->attrs[NL80211_ATTR_MAC])
2386                 return -EINVAL;
2387
2388         if (netif_running(dev))
2389                 return -EBUSY;
2390
2391         if (!rdev->ops->set_wds_peer)
2392                 return -EOPNOTSUPP;
2393
2394         if (wdev->iftype != NL80211_IFTYPE_WDS)
2395                 return -EOPNOTSUPP;
2396
2397         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
2398         return rdev_set_wds_peer(rdev, dev, bssid);
2399 }
2400
2401 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
2402 {
2403         struct cfg80211_registered_device *rdev;
2404         struct net_device *netdev = NULL;
2405         struct wireless_dev *wdev;
2406         int result = 0, rem_txq_params = 0;
2407         struct nlattr *nl_txq_params;
2408         u32 changed;
2409         u8 retry_short = 0, retry_long = 0;
2410         u32 frag_threshold = 0, rts_threshold = 0;
2411         u8 coverage_class = 0;
2412         u32 txq_limit = 0, txq_memory_limit = 0, txq_quantum = 0;
2413
2414         ASSERT_RTNL();
2415
2416         /*
2417          * Try to find the wiphy and netdev. Normally this
2418          * function shouldn't need the netdev, but this is
2419          * done for backward compatibility -- previously
2420          * setting the channel was done per wiphy, but now
2421          * it is per netdev. Previous userland like hostapd
2422          * also passed a netdev to set_wiphy, so that it is
2423          * possible to let that go to the right netdev!
2424          */
2425
2426         if (info->attrs[NL80211_ATTR_IFINDEX]) {
2427                 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
2428
2429                 netdev = __dev_get_by_index(genl_info_net(info), ifindex);
2430                 if (netdev && netdev->ieee80211_ptr)
2431                         rdev = wiphy_to_rdev(netdev->ieee80211_ptr->wiphy);
2432                 else
2433                         netdev = NULL;
2434         }
2435
2436         if (!netdev) {
2437                 rdev = __cfg80211_rdev_from_attrs(genl_info_net(info),
2438                                                   info->attrs);
2439                 if (IS_ERR(rdev))
2440                         return PTR_ERR(rdev);
2441                 wdev = NULL;
2442                 netdev = NULL;
2443                 result = 0;
2444         } else
2445                 wdev = netdev->ieee80211_ptr;
2446
2447         /*
2448          * end workaround code, by now the rdev is available
2449          * and locked, and wdev may or may not be NULL.
2450          */
2451
2452         if (info->attrs[NL80211_ATTR_WIPHY_NAME])
2453                 result = cfg80211_dev_rename(
2454                         rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
2455
2456         if (result)
2457                 return result;
2458
2459         if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
2460                 struct ieee80211_txq_params txq_params;
2461                 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
2462
2463                 if (!rdev->ops->set_txq_params)
2464                         return -EOPNOTSUPP;
2465
2466                 if (!netdev)
2467                         return -EINVAL;
2468
2469                 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2470                     netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2471                         return -EINVAL;
2472
2473                 if (!netif_running(netdev))
2474                         return -ENETDOWN;
2475
2476                 nla_for_each_nested(nl_txq_params,
2477                                     info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
2478                                     rem_txq_params) {
2479                         result = nla_parse_nested(tb, NL80211_TXQ_ATTR_MAX,
2480                                                   nl_txq_params,
2481                                                   txq_params_policy,
2482                                                   info->extack);
2483                         if (result)
2484                                 return result;
2485                         result = parse_txq_params(tb, &txq_params);
2486                         if (result)
2487                                 return result;
2488
2489                         result = rdev_set_txq_params(rdev, netdev,
2490                                                      &txq_params);
2491                         if (result)
2492                                 return result;
2493                 }
2494         }
2495
2496         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
2497                 result = __nl80211_set_channel(
2498                         rdev,
2499                         nl80211_can_set_dev_channel(wdev) ? netdev : NULL,
2500                         info);
2501                 if (result)
2502                         return result;
2503         }
2504
2505         if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
2506                 struct wireless_dev *txp_wdev = wdev;
2507                 enum nl80211_tx_power_setting type;
2508                 int idx, mbm = 0;
2509
2510                 if (!(rdev->wiphy.features & NL80211_FEATURE_VIF_TXPOWER))
2511                         txp_wdev = NULL;
2512
2513                 if (!rdev->ops->set_tx_power)
2514                         return -EOPNOTSUPP;
2515
2516                 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
2517                 type = nla_get_u32(info->attrs[idx]);
2518
2519                 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
2520                     (type != NL80211_TX_POWER_AUTOMATIC))
2521                         return -EINVAL;
2522
2523                 if (type != NL80211_TX_POWER_AUTOMATIC) {
2524                         idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
2525                         mbm = nla_get_u32(info->attrs[idx]);
2526                 }
2527
2528                 result = rdev_set_tx_power(rdev, txp_wdev, type, mbm);
2529                 if (result)
2530                         return result;
2531         }
2532
2533         if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
2534             info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
2535                 u32 tx_ant, rx_ant;
2536
2537                 if ((!rdev->wiphy.available_antennas_tx &&
2538                      !rdev->wiphy.available_antennas_rx) ||
2539                     !rdev->ops->set_antenna)
2540                         return -EOPNOTSUPP;
2541
2542                 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
2543                 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
2544
2545                 /* reject antenna configurations which don't match the
2546                  * available antenna masks, except for the "all" mask */
2547                 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) ||
2548                     (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx)))
2549                         return -EINVAL;
2550
2551                 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx;
2552                 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx;
2553
2554                 result = rdev_set_antenna(rdev, tx_ant, rx_ant);
2555                 if (result)
2556                         return result;
2557         }
2558
2559         changed = 0;
2560
2561         if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
2562                 retry_short = nla_get_u8(
2563                         info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
2564                 if (retry_short == 0)
2565                         return -EINVAL;
2566
2567                 changed |= WIPHY_PARAM_RETRY_SHORT;
2568         }
2569
2570         if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
2571                 retry_long = nla_get_u8(
2572                         info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
2573                 if (retry_long == 0)
2574                         return -EINVAL;
2575
2576                 changed |= WIPHY_PARAM_RETRY_LONG;
2577         }
2578
2579         if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
2580                 frag_threshold = nla_get_u32(
2581                         info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
2582                 if (frag_threshold < 256)
2583                         return -EINVAL;
2584
2585                 if (frag_threshold != (u32) -1) {
2586                         /*
2587                          * Fragments (apart from the last one) are required to
2588                          * have even length. Make the fragmentation code
2589                          * simpler by stripping LSB should someone try to use
2590                          * odd threshold value.
2591                          */
2592                         frag_threshold &= ~0x1;
2593                 }
2594                 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
2595         }
2596
2597         if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
2598                 rts_threshold = nla_get_u32(
2599                         info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
2600                 changed |= WIPHY_PARAM_RTS_THRESHOLD;
2601         }
2602
2603         if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
2604                 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK])
2605                         return -EINVAL;
2606
2607                 coverage_class = nla_get_u8(
2608                         info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
2609                 changed |= WIPHY_PARAM_COVERAGE_CLASS;
2610         }
2611
2612         if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK]) {
2613                 if (!(rdev->wiphy.features & NL80211_FEATURE_ACKTO_ESTIMATION))
2614                         return -EOPNOTSUPP;
2615
2616                 changed |= WIPHY_PARAM_DYN_ACK;
2617         }
2618
2619         if (info->attrs[NL80211_ATTR_TXQ_LIMIT]) {
2620                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
2621                                              NL80211_EXT_FEATURE_TXQS))
2622                         return -EOPNOTSUPP;
2623                 txq_limit = nla_get_u32(
2624                         info->attrs[NL80211_ATTR_TXQ_LIMIT]);
2625                 changed |= WIPHY_PARAM_TXQ_LIMIT;
2626         }
2627
2628         if (info->attrs[NL80211_ATTR_TXQ_MEMORY_LIMIT]) {
2629                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
2630                                              NL80211_EXT_FEATURE_TXQS))
2631                         return -EOPNOTSUPP;
2632                 txq_memory_limit = nla_get_u32(
2633                         info->attrs[NL80211_ATTR_TXQ_MEMORY_LIMIT]);
2634                 changed |= WIPHY_PARAM_TXQ_MEMORY_LIMIT;
2635         }
2636
2637         if (info->attrs[NL80211_ATTR_TXQ_QUANTUM]) {
2638                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
2639                                              NL80211_EXT_FEATURE_TXQS))
2640                         return -EOPNOTSUPP;
2641                 txq_quantum = nla_get_u32(
2642                         info->attrs[NL80211_ATTR_TXQ_QUANTUM]);
2643                 changed |= WIPHY_PARAM_TXQ_QUANTUM;
2644         }
2645
2646         if (changed) {
2647                 u8 old_retry_short, old_retry_long;
2648                 u32 old_frag_threshold, old_rts_threshold;
2649                 u8 old_coverage_class;
2650                 u32 old_txq_limit, old_txq_memory_limit, old_txq_quantum;
2651
2652                 if (!rdev->ops->set_wiphy_params)
2653                         return -EOPNOTSUPP;
2654
2655                 old_retry_short = rdev->wiphy.retry_short;
2656                 old_retry_long = rdev->wiphy.retry_long;
2657                 old_frag_threshold = rdev->wiphy.frag_threshold;
2658                 old_rts_threshold = rdev->wiphy.rts_threshold;
2659                 old_coverage_class = rdev->wiphy.coverage_class;
2660                 old_txq_limit = rdev->wiphy.txq_limit;
2661                 old_txq_memory_limit = rdev->wiphy.txq_memory_limit;
2662                 old_txq_quantum = rdev->wiphy.txq_quantum;
2663
2664                 if (changed & WIPHY_PARAM_RETRY_SHORT)
2665                         rdev->wiphy.retry_short = retry_short;
2666                 if (changed & WIPHY_PARAM_RETRY_LONG)
2667                         rdev->wiphy.retry_long = retry_long;
2668                 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
2669                         rdev->wiphy.frag_threshold = frag_threshold;
2670                 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
2671                         rdev->wiphy.rts_threshold = rts_threshold;
2672                 if (changed & WIPHY_PARAM_COVERAGE_CLASS)
2673                         rdev->wiphy.coverage_class = coverage_class;
2674                 if (changed & WIPHY_PARAM_TXQ_LIMIT)
2675                         rdev->wiphy.txq_limit = txq_limit;
2676                 if (changed & WIPHY_PARAM_TXQ_MEMORY_LIMIT)
2677                         rdev->wiphy.txq_memory_limit = txq_memory_limit;
2678                 if (changed & WIPHY_PARAM_TXQ_QUANTUM)
2679                         rdev->wiphy.txq_quantum = txq_quantum;
2680
2681                 result = rdev_set_wiphy_params(rdev, changed);
2682                 if (result) {
2683                         rdev->wiphy.retry_short = old_retry_short;
2684                         rdev->wiphy.retry_long = old_retry_long;
2685                         rdev->wiphy.frag_threshold = old_frag_threshold;
2686                         rdev->wiphy.rts_threshold = old_rts_threshold;
2687                         rdev->wiphy.coverage_class = old_coverage_class;
2688                         rdev->wiphy.txq_limit = old_txq_limit;
2689                         rdev->wiphy.txq_memory_limit = old_txq_memory_limit;
2690                         rdev->wiphy.txq_quantum = old_txq_quantum;
2691                         return result;
2692                 }
2693         }
2694         return 0;
2695 }
2696
2697 static inline u64 wdev_id(struct wireless_dev *wdev)
2698 {
2699         return (u64)wdev->identifier |
2700                ((u64)wiphy_to_rdev(wdev->wiphy)->wiphy_idx << 32);
2701 }
2702
2703 static int nl80211_send_chandef(struct sk_buff *msg,
2704                                 const struct cfg80211_chan_def *chandef)
2705 {
2706         if (WARN_ON(!cfg80211_chandef_valid(chandef)))
2707                 return -EINVAL;
2708
2709         if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
2710                         chandef->chan->center_freq))
2711                 return -ENOBUFS;
2712         switch (chandef->width) {
2713         case NL80211_CHAN_WIDTH_20_NOHT:
2714         case NL80211_CHAN_WIDTH_20:
2715         case NL80211_CHAN_WIDTH_40:
2716                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
2717                                 cfg80211_get_chandef_type(chandef)))
2718                         return -ENOBUFS;
2719                 break;
2720         default:
2721                 break;
2722         }
2723         if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, chandef->width))
2724                 return -ENOBUFS;
2725         if (nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1, chandef->center_freq1))
2726                 return -ENOBUFS;
2727         if (chandef->center_freq2 &&
2728             nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2, chandef->center_freq2))
2729                 return -ENOBUFS;
2730         return 0;
2731 }
2732
2733 static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags,
2734                               struct cfg80211_registered_device *rdev,
2735                               struct wireless_dev *wdev, bool removal)
2736 {
2737         struct net_device *dev = wdev->netdev;
2738         u8 cmd = NL80211_CMD_NEW_INTERFACE;
2739         void *hdr;
2740
2741         if (removal)
2742                 cmd = NL80211_CMD_DEL_INTERFACE;
2743
2744         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
2745         if (!hdr)
2746                 return -1;
2747
2748         if (dev &&
2749             (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
2750              nla_put_string(msg, NL80211_ATTR_IFNAME, dev->name)))
2751                 goto nla_put_failure;
2752
2753         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
2754             nla_put_u32(msg, NL80211_ATTR_IFTYPE, wdev->iftype) ||
2755             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
2756                               NL80211_ATTR_PAD) ||
2757             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, wdev_address(wdev)) ||
2758             nla_put_u32(msg, NL80211_ATTR_GENERATION,
2759                         rdev->devlist_generation ^
2760                         (cfg80211_rdev_list_generation << 2)))
2761                 goto nla_put_failure;
2762
2763         if (rdev->ops->get_channel) {
2764                 int ret;
2765                 struct cfg80211_chan_def chandef;
2766
2767                 ret = rdev_get_channel(rdev, wdev, &chandef);
2768                 if (ret == 0) {
2769                         if (nl80211_send_chandef(msg, &chandef))
2770                                 goto nla_put_failure;
2771                 }
2772         }
2773
2774         if (rdev->ops->get_tx_power) {
2775                 int dbm, ret;
2776
2777                 ret = rdev_get_tx_power(rdev, wdev, &dbm);
2778                 if (ret == 0 &&
2779                     nla_put_u32(msg, NL80211_ATTR_WIPHY_TX_POWER_LEVEL,
2780                                 DBM_TO_MBM(dbm)))
2781                         goto nla_put_failure;
2782         }
2783
2784         wdev_lock(wdev);
2785         switch (wdev->iftype) {
2786         case NL80211_IFTYPE_AP:
2787                 if (wdev->ssid_len &&
2788                     nla_put(msg, NL80211_ATTR_SSID, wdev->ssid_len, wdev->ssid))
2789                         goto nla_put_failure_locked;
2790                 break;
2791         case NL80211_IFTYPE_STATION:
2792         case NL80211_IFTYPE_P2P_CLIENT:
2793         case NL80211_IFTYPE_ADHOC: {
2794                 const u8 *ssid_ie;
2795                 if (!wdev->current_bss)
2796                         break;
2797                 rcu_read_lock();
2798                 ssid_ie = ieee80211_bss_get_ie(&wdev->current_bss->pub,
2799                                                WLAN_EID_SSID);
2800                 if (ssid_ie &&
2801                     nla_put(msg, NL80211_ATTR_SSID, ssid_ie[1], ssid_ie + 2))
2802                         goto nla_put_failure_rcu_locked;
2803                 rcu_read_unlock();
2804                 break;
2805                 }
2806         default:
2807                 /* nothing */
2808                 break;
2809         }
2810         wdev_unlock(wdev);
2811
2812         if (rdev->ops->get_txq_stats) {
2813                 struct cfg80211_txq_stats txqstats = {};
2814                 int ret = rdev_get_txq_stats(rdev, wdev, &txqstats);
2815
2816                 if (ret == 0 &&
2817                     !nl80211_put_txq_stats(msg, &txqstats,
2818                                            NL80211_ATTR_TXQ_STATS))
2819                         goto nla_put_failure;
2820         }
2821
2822         genlmsg_end(msg, hdr);
2823         return 0;
2824
2825  nla_put_failure_rcu_locked:
2826         rcu_read_unlock();
2827  nla_put_failure_locked:
2828         wdev_unlock(wdev);
2829  nla_put_failure:
2830         genlmsg_cancel(msg, hdr);
2831         return -EMSGSIZE;
2832 }
2833
2834 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
2835 {
2836         int wp_idx = 0;
2837         int if_idx = 0;
2838         int wp_start = cb->args[0];
2839         int if_start = cb->args[1];
2840         int filter_wiphy = -1;
2841         struct cfg80211_registered_device *rdev;
2842         struct wireless_dev *wdev;
2843         int ret;
2844
2845         rtnl_lock();
2846         if (!cb->args[2]) {
2847                 struct nl80211_dump_wiphy_state state = {
2848                         .filter_wiphy = -1,
2849                 };
2850
2851                 ret = nl80211_dump_wiphy_parse(skb, cb, &state);
2852                 if (ret)
2853                         goto out_unlock;
2854
2855                 filter_wiphy = state.filter_wiphy;
2856
2857                 /*
2858                  * if filtering, set cb->args[2] to +1 since 0 is the default
2859                  * value needed to determine that parsing is necessary.
2860                  */
2861                 if (filter_wiphy >= 0)
2862                         cb->args[2] = filter_wiphy + 1;
2863                 else
2864                         cb->args[2] = -1;
2865         } else if (cb->args[2] > 0) {
2866                 filter_wiphy = cb->args[2] - 1;
2867         }
2868
2869         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
2870                 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
2871                         continue;
2872                 if (wp_idx < wp_start) {
2873                         wp_idx++;
2874                         continue;
2875                 }
2876
2877                 if (filter_wiphy >= 0 && filter_wiphy != rdev->wiphy_idx)
2878                         continue;
2879
2880                 if_idx = 0;
2881
2882                 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
2883                         if (if_idx < if_start) {
2884                                 if_idx++;
2885                                 continue;
2886                         }
2887                         if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).portid,
2888                                                cb->nlh->nlmsg_seq, NLM_F_MULTI,
2889                                                rdev, wdev, false) < 0) {
2890                                 goto out;
2891                         }
2892                         if_idx++;
2893                 }
2894
2895                 wp_idx++;
2896         }
2897  out:
2898         cb->args[0] = wp_idx;
2899         cb->args[1] = if_idx;
2900
2901         ret = skb->len;
2902  out_unlock:
2903         rtnl_unlock();
2904
2905         return ret;
2906 }
2907
2908 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
2909 {
2910         struct sk_buff *msg;
2911         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2912         struct wireless_dev *wdev = info->user_ptr[1];
2913
2914         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2915         if (!msg)
2916                 return -ENOMEM;
2917
2918         if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
2919                                rdev, wdev, false) < 0) {
2920                 nlmsg_free(msg);
2921                 return -ENOBUFS;
2922         }
2923
2924         return genlmsg_reply(msg, info);
2925 }
2926
2927 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
2928         [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
2929         [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
2930         [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
2931         [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
2932         [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
2933         [NL80211_MNTR_FLAG_ACTIVE] = { .type = NLA_FLAG },
2934 };
2935
2936 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
2937 {
2938         struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
2939         int flag;
2940
2941         *mntrflags = 0;
2942
2943         if (!nla)
2944                 return -EINVAL;
2945
2946         if (nla_parse_nested(flags, NL80211_MNTR_FLAG_MAX, nla,
2947                              mntr_flags_policy, NULL))
2948                 return -EINVAL;
2949
2950         for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
2951                 if (flags[flag])
2952                         *mntrflags |= (1<<flag);
2953
2954         *mntrflags |= MONITOR_FLAG_CHANGED;
2955
2956         return 0;
2957 }
2958
2959 static int nl80211_parse_mon_options(struct cfg80211_registered_device *rdev,
2960                                      enum nl80211_iftype type,
2961                                      struct genl_info *info,
2962                                      struct vif_params *params)
2963 {
2964         bool change = false;
2965         int err;
2966
2967         if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
2968                 if (type != NL80211_IFTYPE_MONITOR)
2969                         return -EINVAL;
2970
2971                 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
2972                                           &params->flags);
2973                 if (err)
2974                         return err;
2975
2976                 change = true;
2977         }
2978
2979         if (params->flags & MONITOR_FLAG_ACTIVE &&
2980             !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
2981                 return -EOPNOTSUPP;
2982
2983         if (info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]) {
2984                 const u8 *mumimo_groups;
2985                 u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER;
2986
2987                 if (type != NL80211_IFTYPE_MONITOR)
2988                         return -EINVAL;
2989
2990                 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag))
2991                         return -EOPNOTSUPP;
2992
2993                 mumimo_groups =
2994                         nla_data(info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]);
2995
2996                 /* bits 0 and 63 are reserved and must be zero */
2997                 if ((mumimo_groups[0] & BIT(0)) ||
2998                     (mumimo_groups[VHT_MUMIMO_GROUPS_DATA_LEN - 1] & BIT(7)))
2999                         return -EINVAL;
3000
3001                 params->vht_mumimo_groups = mumimo_groups;
3002                 change = true;
3003         }
3004
3005         if (info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR]) {
3006                 u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER;
3007
3008                 if (type != NL80211_IFTYPE_MONITOR)
3009                         return -EINVAL;
3010
3011                 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag))
3012                         return -EOPNOTSUPP;
3013
3014                 params->vht_mumimo_follow_addr =
3015                         nla_data(info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR]);
3016                 change = true;
3017         }
3018
3019         return change ? 1 : 0;
3020 }
3021
3022 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
3023                                struct net_device *netdev, u8 use_4addr,
3024                                enum nl80211_iftype iftype)
3025 {
3026         if (!use_4addr) {
3027                 if (netdev && (netdev->priv_flags & IFF_BRIDGE_PORT))
3028                         return -EBUSY;
3029                 return 0;
3030         }
3031
3032         switch (iftype) {
3033         case NL80211_IFTYPE_AP_VLAN:
3034                 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
3035                         return 0;
3036                 break;
3037         case NL80211_IFTYPE_STATION:
3038                 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
3039                         return 0;
3040                 break;
3041         default:
3042                 break;
3043         }
3044
3045         return -EOPNOTSUPP;
3046 }
3047
3048 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
3049 {
3050         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3051         struct vif_params params;
3052         int err;
3053         enum nl80211_iftype otype, ntype;
3054         struct net_device *dev = info->user_ptr[1];
3055         bool change = false;
3056
3057         memset(&params, 0, sizeof(params));
3058
3059         otype = ntype = dev->ieee80211_ptr->iftype;
3060
3061         if (info->attrs[NL80211_ATTR_IFTYPE]) {
3062                 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
3063                 if (otype != ntype)
3064                         change = true;
3065                 if (ntype > NL80211_IFTYPE_MAX)
3066                         return -EINVAL;
3067         }
3068
3069         if (info->attrs[NL80211_ATTR_MESH_ID]) {
3070                 struct wireless_dev *wdev = dev->ieee80211_ptr;
3071
3072                 if (ntype != NL80211_IFTYPE_MESH_POINT)
3073                         return -EINVAL;
3074                 if (netif_running(dev))
3075                         return -EBUSY;
3076
3077                 wdev_lock(wdev);
3078                 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
3079                              IEEE80211_MAX_MESH_ID_LEN);
3080                 wdev->mesh_id_up_len =
3081                         nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
3082                 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
3083                        wdev->mesh_id_up_len);
3084                 wdev_unlock(wdev);
3085         }
3086
3087         if (info->attrs[NL80211_ATTR_4ADDR]) {
3088                 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
3089                 change = true;
3090                 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
3091                 if (err)
3092                         return err;
3093         } else {
3094                 params.use_4addr = -1;
3095         }
3096
3097         err = nl80211_parse_mon_options(rdev, ntype, info, &params);
3098         if (err < 0)
3099                 return err;
3100         if (err > 0)
3101                 change = true;
3102
3103         if (change)
3104                 err = cfg80211_change_iface(rdev, dev, ntype, &params);
3105         else
3106                 err = 0;
3107
3108         if (!err && params.use_4addr != -1)
3109                 dev->ieee80211_ptr->use_4addr = params.use_4addr;
3110
3111         return err;
3112 }
3113
3114 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
3115 {
3116         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3117         struct vif_params params;
3118         struct wireless_dev *wdev;
3119         struct sk_buff *msg;
3120         int err;
3121         enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
3122
3123         /* to avoid failing a new interface creation due to pending removal */
3124         cfg80211_destroy_ifaces(rdev);
3125
3126         memset(&params, 0, sizeof(params));
3127
3128         if (!info->attrs[NL80211_ATTR_IFNAME])
3129                 return -EINVAL;
3130
3131         if (info->attrs[NL80211_ATTR_IFTYPE]) {
3132                 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
3133                 if (type > NL80211_IFTYPE_MAX)
3134                         return -EINVAL;
3135         }
3136
3137         if (!rdev->ops->add_virtual_intf ||
3138             !(rdev->wiphy.interface_modes & (1 << type)))
3139                 return -EOPNOTSUPP;
3140
3141         if ((type == NL80211_IFTYPE_P2P_DEVICE || type == NL80211_IFTYPE_NAN ||
3142              rdev->wiphy.features & NL80211_FEATURE_MAC_ON_CREATE) &&
3143             info->attrs[NL80211_ATTR_MAC]) {
3144                 nla_memcpy(params.macaddr, info->attrs[NL80211_ATTR_MAC],
3145                            ETH_ALEN);
3146                 if (!is_valid_ether_addr(params.macaddr))
3147                         return -EADDRNOTAVAIL;
3148         }
3149
3150         if (info->attrs[NL80211_ATTR_4ADDR]) {
3151                 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
3152                 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
3153                 if (err)
3154                         return err;
3155         }
3156
3157         err = nl80211_parse_mon_options(rdev, type, info, &params);
3158         if (err < 0)
3159                 return err;
3160
3161         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3162         if (!msg)
3163                 return -ENOMEM;
3164
3165         wdev = rdev_add_virtual_intf(rdev,
3166                                 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
3167                                 NET_NAME_USER, type, &params);
3168         if (WARN_ON(!wdev)) {
3169                 nlmsg_free(msg);
3170                 return -EPROTO;
3171         } else if (IS_ERR(wdev)) {
3172                 nlmsg_free(msg);
3173                 return PTR_ERR(wdev);
3174         }
3175
3176         if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
3177                 wdev->owner_nlportid = info->snd_portid;
3178
3179         switch (type) {
3180         case NL80211_IFTYPE_MESH_POINT:
3181                 if (!info->attrs[NL80211_ATTR_MESH_ID])
3182                         break;
3183                 wdev_lock(wdev);
3184                 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
3185                              IEEE80211_MAX_MESH_ID_LEN);
3186                 wdev->mesh_id_up_len =
3187                         nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
3188                 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
3189                        wdev->mesh_id_up_len);
3190                 wdev_unlock(wdev);
3191                 break;
3192         case NL80211_IFTYPE_NAN:
3193         case NL80211_IFTYPE_P2P_DEVICE:
3194                 /*
3195                  * P2P Device and NAN do not have a netdev, so don't go
3196                  * through the netdev notifier and must be added here
3197                  */
3198                 mutex_init(&wdev->mtx);
3199                 INIT_LIST_HEAD(&wdev->event_list);
3200                 spin_lock_init(&wdev->event_lock);
3201                 INIT_LIST_HEAD(&wdev->mgmt_registrations);
3202                 spin_lock_init(&wdev->mgmt_registrations_lock);
3203
3204                 wdev->identifier = ++rdev->wdev_id;
3205                 list_add_rcu(&wdev->list, &rdev->wiphy.wdev_list);
3206                 rdev->devlist_generation++;
3207                 break;
3208         default:
3209                 break;
3210         }
3211
3212         if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
3213                                rdev, wdev, false) < 0) {
3214                 nlmsg_free(msg);
3215                 return -ENOBUFS;
3216         }
3217
3218         /*
3219          * For wdevs which have no associated netdev object (e.g. of type
3220          * NL80211_IFTYPE_P2P_DEVICE), emit the NEW_INTERFACE event here.
3221          * For all other types, the event will be generated from the
3222          * netdev notifier
3223          */
3224         if (!wdev->netdev)
3225                 nl80211_notify_iface(rdev, wdev, NL80211_CMD_NEW_INTERFACE);
3226
3227         return genlmsg_reply(msg, info);
3228 }
3229
3230 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
3231 {
3232         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3233         struct wireless_dev *wdev = info->user_ptr[1];
3234
3235         if (!rdev->ops->del_virtual_intf)
3236                 return -EOPNOTSUPP;
3237
3238         /*
3239          * If we remove a wireless device without a netdev then clear
3240          * user_ptr[1] so that nl80211_post_doit won't dereference it
3241          * to check if it needs to do dev_put(). Otherwise it crashes
3242          * since the wdev has been freed, unlike with a netdev where
3243          * we need the dev_put() for the netdev to really be freed.
3244          */
3245         if (!wdev->netdev)
3246                 info->user_ptr[1] = NULL;
3247
3248         return rdev_del_virtual_intf(rdev, wdev);
3249 }
3250
3251 static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info)
3252 {
3253         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3254         struct net_device *dev = info->user_ptr[1];
3255         u16 noack_map;
3256
3257         if (!info->attrs[NL80211_ATTR_NOACK_MAP])
3258                 return -EINVAL;
3259
3260         if (!rdev->ops->set_noack_map)
3261                 return -EOPNOTSUPP;
3262
3263         noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]);
3264
3265         return rdev_set_noack_map(rdev, dev, noack_map);
3266 }
3267
3268 struct get_key_cookie {
3269         struct sk_buff *msg;
3270         int error;
3271         int idx;
3272 };
3273
3274 static void get_key_callback(void *c, struct key_params *params)
3275 {
3276         struct nlattr *key;
3277         struct get_key_cookie *cookie = c;
3278
3279         if ((params->key &&
3280              nla_put(cookie->msg, NL80211_ATTR_KEY_DATA,
3281                      params->key_len, params->key)) ||
3282             (params->seq &&
3283              nla_put(cookie->msg, NL80211_ATTR_KEY_SEQ,
3284                      params->seq_len, params->seq)) ||
3285             (params->cipher &&
3286              nla_put_u32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
3287                          params->cipher)))
3288                 goto nla_put_failure;
3289
3290         key = nla_nest_start(cookie->msg, NL80211_ATTR_KEY);
3291         if (!key)
3292                 goto nla_put_failure;
3293
3294         if ((params->key &&
3295              nla_put(cookie->msg, NL80211_KEY_DATA,
3296                      params->key_len, params->key)) ||
3297             (params->seq &&
3298              nla_put(cookie->msg, NL80211_KEY_SEQ,
3299                      params->seq_len, params->seq)) ||
3300             (params->cipher &&
3301              nla_put_u32(cookie->msg, NL80211_KEY_CIPHER,
3302                          params->cipher)))
3303                 goto nla_put_failure;
3304
3305         if (nla_put_u8(cookie->msg, NL80211_ATTR_KEY_IDX, cookie->idx))
3306                 goto nla_put_failure;
3307
3308         nla_nest_end(cookie->msg, key);
3309
3310         return;
3311  nla_put_failure:
3312         cookie->error = 1;
3313 }
3314
3315 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
3316 {
3317         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3318         int err;
3319         struct net_device *dev = info->user_ptr[1];
3320         u8 key_idx = 0;
3321         const u8 *mac_addr = NULL;
3322         bool pairwise;
3323         struct get_key_cookie cookie = {
3324                 .error = 0,
3325         };
3326         void *hdr;
3327         struct sk_buff *msg;
3328
3329         if (info->attrs[NL80211_ATTR_KEY_IDX])
3330                 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
3331
3332         if (key_idx > 5)
3333                 return -EINVAL;
3334
3335         if (info->attrs[NL80211_ATTR_MAC])
3336                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3337
3338         pairwise = !!mac_addr;
3339         if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
3340                 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
3341
3342                 if (kt >= NUM_NL80211_KEYTYPES)
3343                         return -EINVAL;
3344                 if (kt != NL80211_KEYTYPE_GROUP &&
3345                     kt != NL80211_KEYTYPE_PAIRWISE)
3346                         return -EINVAL;
3347                 pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
3348         }
3349
3350         if (!rdev->ops->get_key)
3351                 return -EOPNOTSUPP;
3352
3353         if (!pairwise && mac_addr && !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
3354                 return -ENOENT;
3355
3356         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3357         if (!msg)
3358                 return -ENOMEM;
3359
3360         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
3361                              NL80211_CMD_NEW_KEY);
3362         if (!hdr)
3363                 goto nla_put_failure;
3364
3365         cookie.msg = msg;
3366         cookie.idx = key_idx;
3367
3368         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3369             nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx))
3370                 goto nla_put_failure;
3371         if (mac_addr &&
3372             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
3373                 goto nla_put_failure;
3374
3375         err = rdev_get_key(rdev, dev, key_idx, pairwise, mac_addr, &cookie,
3376                            get_key_callback);
3377
3378         if (err)
3379                 goto free_msg;
3380
3381         if (cookie.error)
3382                 goto nla_put_failure;
3383
3384         genlmsg_end(msg, hdr);
3385         return genlmsg_reply(msg, info);
3386
3387  nla_put_failure:
3388         err = -ENOBUFS;
3389  free_msg:
3390         nlmsg_free(msg);
3391         return err;
3392 }
3393
3394 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
3395 {
3396         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3397         struct key_parse key;
3398         int err;
3399         struct net_device *dev = info->user_ptr[1];
3400
3401         err = nl80211_parse_key(info, &key);
3402         if (err)
3403                 return err;
3404
3405         if (key.idx < 0)
3406                 return -EINVAL;
3407
3408         /* only support setting default key */
3409         if (!key.def && !key.defmgmt)
3410                 return -EINVAL;
3411
3412         wdev_lock(dev->ieee80211_ptr);
3413
3414         if (key.def) {
3415                 if (!rdev->ops->set_default_key) {
3416                         err = -EOPNOTSUPP;
3417                         goto out;
3418                 }
3419
3420                 err = nl80211_key_allowed(dev->ieee80211_ptr);
3421                 if (err)
3422                         goto out;
3423
3424                 err = rdev_set_default_key(rdev, dev, key.idx,
3425                                                  key.def_uni, key.def_multi);
3426
3427                 if (err)
3428                         goto out;
3429
3430 #ifdef CONFIG_CFG80211_WEXT
3431                 dev->ieee80211_ptr->wext.default_key = key.idx;
3432 #endif
3433         } else {
3434                 if (key.def_uni || !key.def_multi) {
3435                         err = -EINVAL;
3436                         goto out;
3437                 }
3438
3439                 if (!rdev->ops->set_default_mgmt_key) {
3440                         err = -EOPNOTSUPP;
3441                         goto out;
3442                 }
3443
3444                 err = nl80211_key_allowed(dev->ieee80211_ptr);
3445                 if (err)
3446                         goto out;
3447
3448                 err = rdev_set_default_mgmt_key(rdev, dev, key.idx);
3449                 if (err)
3450                         goto out;
3451
3452 #ifdef CONFIG_CFG80211_WEXT
3453                 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx;
3454 #endif
3455         }
3456
3457  out:
3458         wdev_unlock(dev->ieee80211_ptr);
3459
3460         return err;
3461 }
3462
3463 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
3464 {
3465         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3466         int err;
3467         struct net_device *dev = info->user_ptr[1];
3468         struct key_parse key;
3469         const u8 *mac_addr = NULL;
3470
3471         err = nl80211_parse_key(info, &key);
3472         if (err)
3473                 return err;
3474
3475         if (!key.p.key)
3476                 return -EINVAL;
3477
3478         if (info->attrs[NL80211_ATTR_MAC])
3479                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3480
3481         if (key.type == -1) {
3482                 if (mac_addr)
3483                         key.type = NL80211_KEYTYPE_PAIRWISE;
3484                 else
3485                         key.type = NL80211_KEYTYPE_GROUP;
3486         }
3487
3488         /* for now */
3489         if (key.type != NL80211_KEYTYPE_PAIRWISE &&
3490             key.type != NL80211_KEYTYPE_GROUP)
3491                 return -EINVAL;
3492
3493         if (!rdev->ops->add_key)
3494                 return -EOPNOTSUPP;
3495
3496         if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
3497                                            key.type == NL80211_KEYTYPE_PAIRWISE,
3498                                            mac_addr))
3499                 return -EINVAL;
3500
3501         wdev_lock(dev->ieee80211_ptr);
3502         err = nl80211_key_allowed(dev->ieee80211_ptr);
3503         if (!err)
3504                 err = rdev_add_key(rdev, dev, key.idx,
3505                                    key.type == NL80211_KEYTYPE_PAIRWISE,
3506                                     mac_addr, &key.p);
3507         wdev_unlock(dev->ieee80211_ptr);
3508
3509         return err;
3510 }
3511
3512 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
3513 {
3514         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3515         int err;
3516         struct net_device *dev = info->user_ptr[1];
3517         u8 *mac_addr = NULL;
3518         struct key_parse key;
3519
3520         err = nl80211_parse_key(info, &key);
3521         if (err)
3522                 return err;
3523
3524         if (info->attrs[NL80211_ATTR_MAC])
3525                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3526
3527         if (key.type == -1) {
3528                 if (mac_addr)
3529                         key.type = NL80211_KEYTYPE_PAIRWISE;
3530                 else
3531                         key.type = NL80211_KEYTYPE_GROUP;
3532         }
3533
3534         /* for now */
3535         if (key.type != NL80211_KEYTYPE_PAIRWISE &&
3536             key.type != NL80211_KEYTYPE_GROUP)
3537                 return -EINVAL;
3538
3539         if (!rdev->ops->del_key)
3540                 return -EOPNOTSUPP;
3541
3542         wdev_lock(dev->ieee80211_ptr);
3543         err = nl80211_key_allowed(dev->ieee80211_ptr);
3544
3545         if (key.type == NL80211_KEYTYPE_GROUP && mac_addr &&
3546             !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
3547                 err = -ENOENT;
3548
3549         if (!err)
3550                 err = rdev_del_key(rdev, dev, key.idx,
3551                                    key.type == NL80211_KEYTYPE_PAIRWISE,
3552                                    mac_addr);
3553
3554 #ifdef CONFIG_CFG80211_WEXT
3555         if (!err) {
3556                 if (key.idx == dev->ieee80211_ptr->wext.default_key)
3557                         dev->ieee80211_ptr->wext.default_key = -1;
3558                 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key)
3559                         dev->ieee80211_ptr->wext.default_mgmt_key = -1;
3560         }
3561 #endif
3562         wdev_unlock(dev->ieee80211_ptr);
3563
3564         return err;
3565 }
3566
3567 /* This function returns an error or the number of nested attributes */
3568 static int validate_acl_mac_addrs(struct nlattr *nl_attr)
3569 {
3570         struct nlattr *attr;
3571         int n_entries = 0, tmp;
3572
3573         nla_for_each_nested(attr, nl_attr, tmp) {
3574                 if (nla_len(attr) != ETH_ALEN)
3575                         return -EINVAL;
3576
3577                 n_entries++;
3578         }
3579
3580         return n_entries;
3581 }
3582
3583 /*
3584  * This function parses ACL information and allocates memory for ACL data.
3585  * On successful return, the calling function is responsible to free the
3586  * ACL buffer returned by this function.
3587  */
3588 static struct cfg80211_acl_data *parse_acl_data(struct wiphy *wiphy,
3589                                                 struct genl_info *info)
3590 {
3591         enum nl80211_acl_policy acl_policy;
3592         struct nlattr *attr;
3593         struct cfg80211_acl_data *acl;
3594         int i = 0, n_entries, tmp;
3595
3596         if (!wiphy->max_acl_mac_addrs)
3597                 return ERR_PTR(-EOPNOTSUPP);
3598
3599         if (!info->attrs[NL80211_ATTR_ACL_POLICY])
3600                 return ERR_PTR(-EINVAL);
3601
3602         acl_policy = nla_get_u32(info->attrs[NL80211_ATTR_ACL_POLICY]);
3603         if (acl_policy != NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED &&
3604             acl_policy != NL80211_ACL_POLICY_DENY_UNLESS_LISTED)
3605                 return ERR_PTR(-EINVAL);
3606
3607         if (!info->attrs[NL80211_ATTR_MAC_ADDRS])
3608                 return ERR_PTR(-EINVAL);
3609
3610         n_entries = validate_acl_mac_addrs(info->attrs[NL80211_ATTR_MAC_ADDRS]);
3611         if (n_entries < 0)
3612                 return ERR_PTR(n_entries);
3613
3614         if (n_entries > wiphy->max_acl_mac_addrs)
3615                 return ERR_PTR(-ENOTSUPP);
3616
3617         acl = kzalloc(sizeof(*acl) + (sizeof(struct mac_address) * n_entries),
3618                       GFP_KERNEL);
3619         if (!acl)
3620                 return ERR_PTR(-ENOMEM);
3621
3622         nla_for_each_nested(attr, info->attrs[NL80211_ATTR_MAC_ADDRS], tmp) {
3623                 memcpy(acl->mac_addrs[i].addr, nla_data(attr), ETH_ALEN);
3624                 i++;
3625         }
3626
3627         acl->n_acl_entries = n_entries;
3628         acl->acl_policy = acl_policy;
3629
3630         return acl;
3631 }
3632
3633 static int nl80211_set_mac_acl(struct sk_buff *skb, struct genl_info *info)
3634 {
3635         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3636         struct net_device *dev = info->user_ptr[1];
3637         struct cfg80211_acl_data *acl;
3638         int err;
3639
3640         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3641             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3642                 return -EOPNOTSUPP;
3643
3644         if (!dev->ieee80211_ptr->beacon_interval)
3645                 return -EINVAL;
3646
3647         acl = parse_acl_data(&rdev->wiphy, info);
3648         if (IS_ERR(acl))
3649                 return PTR_ERR(acl);
3650
3651         err = rdev_set_mac_acl(rdev, dev, acl);
3652
3653         kfree(acl);
3654
3655         return err;
3656 }
3657
3658 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
3659                            u8 *rates, u8 rates_len)
3660 {
3661         u8 i;
3662         u32 mask = 0;
3663
3664         for (i = 0; i < rates_len; i++) {
3665                 int rate = (rates[i] & 0x7f) * 5;
3666                 int ridx;
3667
3668                 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
3669                         struct ieee80211_rate *srate =
3670                                 &sband->bitrates[ridx];
3671                         if (rate == srate->bitrate) {
3672                                 mask |= 1 << ridx;
3673                                 break;
3674                         }
3675                 }
3676                 if (ridx == sband->n_bitrates)
3677                         return 0; /* rate not found */
3678         }
3679
3680         return mask;
3681 }
3682
3683 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband,
3684                                u8 *rates, u8 rates_len,
3685                                u8 mcs[IEEE80211_HT_MCS_MASK_LEN])
3686 {
3687         u8 i;
3688
3689         memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN);
3690
3691         for (i = 0; i < rates_len; i++) {
3692                 int ridx, rbit;
3693
3694                 ridx = rates[i] / 8;
3695                 rbit = BIT(rates[i] % 8);
3696
3697                 /* check validity */
3698                 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN))
3699                         return false;
3700
3701                 /* check availability */
3702                 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit)
3703                         mcs[ridx] |= rbit;
3704                 else
3705                         return false;
3706         }
3707
3708         return true;
3709 }
3710
3711 static u16 vht_mcs_map_to_mcs_mask(u8 vht_mcs_map)
3712 {
3713         u16 mcs_mask = 0;
3714
3715         switch (vht_mcs_map) {
3716         case IEEE80211_VHT_MCS_NOT_SUPPORTED:
3717                 break;
3718         case IEEE80211_VHT_MCS_SUPPORT_0_7:
3719                 mcs_mask = 0x00FF;
3720                 break;
3721         case IEEE80211_VHT_MCS_SUPPORT_0_8:
3722                 mcs_mask = 0x01FF;
3723                 break;
3724         case IEEE80211_VHT_MCS_SUPPORT_0_9:
3725                 mcs_mask = 0x03FF;
3726                 break;
3727         default:
3728                 break;
3729         }
3730
3731         return mcs_mask;
3732 }
3733
3734 static void vht_build_mcs_mask(u16 vht_mcs_map,
3735                                u16 vht_mcs_mask[NL80211_VHT_NSS_MAX])
3736 {
3737         u8 nss;
3738
3739         for (nss = 0; nss < NL80211_VHT_NSS_MAX; nss++) {
3740                 vht_mcs_mask[nss] = vht_mcs_map_to_mcs_mask(vht_mcs_map & 0x03);
3741                 vht_mcs_map >>= 2;
3742         }
3743 }
3744
3745 static bool vht_set_mcs_mask(struct ieee80211_supported_band *sband,
3746                              struct nl80211_txrate_vht *txrate,
3747                              u16 mcs[NL80211_VHT_NSS_MAX])
3748 {
3749         u16 tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
3750         u16 tx_mcs_mask[NL80211_VHT_NSS_MAX] = {};
3751         u8 i;
3752
3753         if (!sband->vht_cap.vht_supported)
3754                 return false;
3755
3756         memset(mcs, 0, sizeof(u16) * NL80211_VHT_NSS_MAX);
3757
3758         /* Build vht_mcs_mask from VHT capabilities */
3759         vht_build_mcs_mask(tx_mcs_map, tx_mcs_mask);
3760
3761         for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
3762                 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i])
3763                         mcs[i] = txrate->mcs[i];
3764                 else
3765                         return false;
3766         }
3767
3768         return true;
3769 }
3770
3771 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
3772         [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
3773                                     .len = NL80211_MAX_SUPP_RATES },
3774         [NL80211_TXRATE_HT] = { .type = NLA_BINARY,
3775                                 .len = NL80211_MAX_SUPP_HT_RATES },
3776         [NL80211_TXRATE_VHT] = { .len = sizeof(struct nl80211_txrate_vht)},
3777         [NL80211_TXRATE_GI] = { .type = NLA_U8 },
3778 };
3779
3780 static int nl80211_parse_tx_bitrate_mask(struct genl_info *info,
3781                                          struct cfg80211_bitrate_mask *mask)
3782 {
3783         struct nlattr *tb[NL80211_TXRATE_MAX + 1];
3784         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3785         int rem, i;
3786         struct nlattr *tx_rates;
3787         struct ieee80211_supported_band *sband;
3788         u16 vht_tx_mcs_map;
3789
3790         memset(mask, 0, sizeof(*mask));
3791         /* Default to all rates enabled */
3792         for (i = 0; i < NUM_NL80211_BANDS; i++) {
3793                 sband = rdev->wiphy.bands[i];
3794
3795                 if (!sband)
3796                         continue;
3797
3798                 mask->control[i].legacy = (1 << sband->n_bitrates) - 1;
3799                 memcpy(mask->control[i].ht_mcs,
3800                        sband->ht_cap.mcs.rx_mask,
3801                        sizeof(mask->control[i].ht_mcs));
3802
3803                 if (!sband->vht_cap.vht_supported)
3804                         continue;
3805
3806                 vht_tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
3807                 vht_build_mcs_mask(vht_tx_mcs_map, mask->control[i].vht_mcs);
3808         }
3809
3810         /* if no rates are given set it back to the defaults */
3811         if (!info->attrs[NL80211_ATTR_TX_RATES])
3812                 goto out;
3813
3814         /* The nested attribute uses enum nl80211_band as the index. This maps
3815          * directly to the enum nl80211_band values used in cfg80211.
3816          */
3817         BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8);
3818         nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem) {
3819                 enum nl80211_band band = nla_type(tx_rates);
3820                 int err;
3821
3822                 if (band < 0 || band >= NUM_NL80211_BANDS)
3823                         return -EINVAL;
3824                 sband = rdev->wiphy.bands[band];
3825                 if (sband == NULL)
3826                         return -EINVAL;
3827                 err = nla_parse_nested(tb, NL80211_TXRATE_MAX, tx_rates,
3828                                        nl80211_txattr_policy, info->extack);
3829                 if (err)
3830                         return err;
3831                 if (tb[NL80211_TXRATE_LEGACY]) {
3832                         mask->control[band].legacy = rateset_to_mask(
3833                                 sband,
3834                                 nla_data(tb[NL80211_TXRATE_LEGACY]),
3835                                 nla_len(tb[NL80211_TXRATE_LEGACY]));
3836                         if ((mask->control[band].legacy == 0) &&
3837                             nla_len(tb[NL80211_TXRATE_LEGACY]))
3838                                 return -EINVAL;
3839                 }
3840                 if (tb[NL80211_TXRATE_HT]) {
3841                         if (!ht_rateset_to_mask(
3842                                         sband,
3843                                         nla_data(tb[NL80211_TXRATE_HT]),
3844                                         nla_len(tb[NL80211_TXRATE_HT]),
3845                                         mask->control[band].ht_mcs))
3846                                 return -EINVAL;
3847                 }
3848                 if (tb[NL80211_TXRATE_VHT]) {
3849                         if (!vht_set_mcs_mask(
3850                                         sband,
3851                                         nla_data(tb[NL80211_TXRATE_VHT]),
3852                                         mask->control[band].vht_mcs))
3853                                 return -EINVAL;
3854                 }
3855                 if (tb[NL80211_TXRATE_GI]) {
3856                         mask->control[band].gi =
3857                                 nla_get_u8(tb[NL80211_TXRATE_GI]);
3858                         if (mask->control[band].gi > NL80211_TXRATE_FORCE_LGI)
3859                                 return -EINVAL;
3860                 }
3861
3862                 if (mask->control[band].legacy == 0) {
3863                         /* don't allow empty legacy rates if HT or VHT
3864                          * are not even supported.
3865                          */
3866                         if (!(rdev->wiphy.bands[band]->ht_cap.ht_supported ||
3867                               rdev->wiphy.bands[band]->vht_cap.vht_supported))
3868                                 return -EINVAL;
3869
3870                         for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
3871                                 if (mask->control[band].ht_mcs[i])
3872                                         goto out;
3873
3874                         for (i = 0; i < NL80211_VHT_NSS_MAX; i++)
3875                                 if (mask->control[band].vht_mcs[i])
3876                                         goto out;
3877
3878                         /* legacy and mcs rates may not be both empty */
3879                         return -EINVAL;
3880                 }
3881         }
3882
3883 out:
3884         return 0;
3885 }
3886
3887 static int validate_beacon_tx_rate(struct cfg80211_registered_device *rdev,
3888                                    enum nl80211_band band,
3889                                    struct cfg80211_bitrate_mask *beacon_rate)
3890 {
3891         u32 count_ht, count_vht, i;
3892         u32 rate = beacon_rate->control[band].legacy;
3893
3894         /* Allow only one rate */
3895         if (hweight32(rate) > 1)
3896                 return -EINVAL;
3897
3898         count_ht = 0;
3899         for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++) {
3900                 if (hweight8(beacon_rate->control[band].ht_mcs[i]) > 1) {
3901                         return -EINVAL;
3902                 } else if (beacon_rate->control[band].ht_mcs[i]) {
3903                         count_ht++;
3904                         if (count_ht > 1)
3905                                 return -EINVAL;
3906                 }
3907                 if (count_ht && rate)
3908                         return -EINVAL;
3909         }
3910
3911         count_vht = 0;
3912         for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
3913                 if (hweight16(beacon_rate->control[band].vht_mcs[i]) > 1) {
3914                         return -EINVAL;
3915                 } else if (beacon_rate->control[band].vht_mcs[i]) {
3916                         count_vht++;
3917                         if (count_vht > 1)
3918                                 return -EINVAL;
3919                 }
3920                 if (count_vht && rate)
3921                         return -EINVAL;
3922         }
3923
3924         if ((count_ht && count_vht) || (!rate && !count_ht && !count_vht))
3925                 return -EINVAL;
3926
3927         if (rate &&
3928             !wiphy_ext_feature_isset(&rdev->wiphy,
3929                                      NL80211_EXT_FEATURE_BEACON_RATE_LEGACY))
3930                 return -EINVAL;
3931         if (count_ht &&
3932             !wiphy_ext_feature_isset(&rdev->wiphy,
3933                                      NL80211_EXT_FEATURE_BEACON_RATE_HT))
3934                 return -EINVAL;
3935         if (count_vht &&
3936             !wiphy_ext_feature_isset(&rdev->wiphy,
3937                                      NL80211_EXT_FEATURE_BEACON_RATE_VHT))
3938                 return -EINVAL;
3939
3940         return 0;
3941 }
3942
3943 static int nl80211_parse_beacon(struct nlattr *attrs[],
3944                                 struct cfg80211_beacon_data *bcn)
3945 {
3946         bool haveinfo = false;
3947
3948         if (!is_valid_ie_attr(attrs[NL80211_ATTR_BEACON_TAIL]) ||
3949             !is_valid_ie_attr(attrs[NL80211_ATTR_IE]) ||
3950             !is_valid_ie_attr(attrs[NL80211_ATTR_IE_PROBE_RESP]) ||
3951             !is_valid_ie_attr(attrs[NL80211_ATTR_IE_ASSOC_RESP]))
3952                 return -EINVAL;
3953
3954         memset(bcn, 0, sizeof(*bcn));
3955
3956         if (attrs[NL80211_ATTR_BEACON_HEAD]) {
3957                 bcn->head = nla_data(attrs[NL80211_ATTR_BEACON_HEAD]);
3958                 bcn->head_len = nla_len(attrs[NL80211_ATTR_BEACON_HEAD]);
3959                 if (!bcn->head_len)
3960                         return -EINVAL;
3961                 haveinfo = true;
3962         }
3963
3964         if (attrs[NL80211_ATTR_BEACON_TAIL]) {
3965                 bcn->tail = nla_data(attrs[NL80211_ATTR_BEACON_TAIL]);
3966                 bcn->tail_len = nla_len(attrs[NL80211_ATTR_BEACON_TAIL]);
3967                 haveinfo = true;
3968         }
3969
3970         if (!haveinfo)
3971                 return -EINVAL;
3972
3973         if (attrs[NL80211_ATTR_IE]) {
3974                 bcn->beacon_ies = nla_data(attrs[NL80211_ATTR_IE]);
3975                 bcn->beacon_ies_len = nla_len(attrs[NL80211_ATTR_IE]);
3976         }
3977
3978         if (attrs[NL80211_ATTR_IE_PROBE_RESP]) {
3979                 bcn->proberesp_ies =
3980                         nla_data(attrs[NL80211_ATTR_IE_PROBE_RESP]);
3981                 bcn->proberesp_ies_len =
3982                         nla_len(attrs[NL80211_ATTR_IE_PROBE_RESP]);
3983         }
3984
3985         if (attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
3986                 bcn->assocresp_ies =
3987                         nla_data(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
3988                 bcn->assocresp_ies_len =
3989                         nla_len(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
3990         }
3991
3992         if (attrs[NL80211_ATTR_PROBE_RESP]) {
3993                 bcn->probe_resp = nla_data(attrs[NL80211_ATTR_PROBE_RESP]);
3994                 bcn->probe_resp_len = nla_len(attrs[NL80211_ATTR_PROBE_RESP]);
3995         }
3996
3997         return 0;
3998 }
3999
4000 static void nl80211_check_ap_rate_selectors(struct cfg80211_ap_settings *params,
4001                                             const u8 *rates)
4002 {
4003         int i;
4004
4005         if (!rates)
4006                 return;
4007
4008         for (i = 0; i < rates[1]; i++) {
4009                 if (rates[2 + i] == BSS_MEMBERSHIP_SELECTOR_HT_PHY)
4010                         params->ht_required = true;
4011                 if (rates[2 + i] == BSS_MEMBERSHIP_SELECTOR_VHT_PHY)
4012                         params->vht_required = true;
4013         }
4014 }
4015
4016 /*
4017  * Since the nl80211 API didn't include, from the beginning, attributes about
4018  * HT/VHT requirements/capabilities, we parse them out of the IEs for the
4019  * benefit of drivers that rebuild IEs in the firmware.
4020  */
4021 static void nl80211_calculate_ap_params(struct cfg80211_ap_settings *params)
4022 {
4023         const struct cfg80211_beacon_data *bcn = &params->beacon;
4024         size_t ies_len = bcn->tail_len;
4025         const u8 *ies = bcn->tail;
4026         const u8 *rates;
4027         const u8 *cap;
4028
4029         rates = cfg80211_find_ie(WLAN_EID_SUPP_RATES, ies, ies_len);
4030         nl80211_check_ap_rate_selectors(params, rates);
4031
4032         rates = cfg80211_find_ie(WLAN_EID_EXT_SUPP_RATES, ies, ies_len);
4033         nl80211_check_ap_rate_selectors(params, rates);
4034
4035         cap = cfg80211_find_ie(WLAN_EID_HT_CAPABILITY, ies, ies_len);
4036         if (cap && cap[1] >= sizeof(*params->ht_cap))
4037                 params->ht_cap = (void *)(cap + 2);
4038         cap = cfg80211_find_ie(WLAN_EID_VHT_CAPABILITY, ies, ies_len);
4039         if (cap && cap[1] >= sizeof(*params->vht_cap))
4040                 params->vht_cap = (void *)(cap + 2);
4041 }
4042
4043 static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev,
4044                                    struct cfg80211_ap_settings *params)
4045 {
4046         struct wireless_dev *wdev;
4047         bool ret = false;
4048
4049         list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
4050                 if (wdev->iftype != NL80211_IFTYPE_AP &&
4051                     wdev->iftype != NL80211_IFTYPE_P2P_GO)
4052                         continue;
4053
4054                 if (!wdev->preset_chandef.chan)
4055                         continue;
4056
4057                 params->chandef = wdev->preset_chandef;
4058                 ret = true;
4059                 break;
4060         }
4061
4062         return ret;
4063 }
4064
4065 static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev,
4066                                     enum nl80211_auth_type auth_type,
4067                                     enum nl80211_commands cmd)
4068 {
4069         if (auth_type > NL80211_AUTHTYPE_MAX)
4070                 return false;
4071
4072         switch (cmd) {
4073         case NL80211_CMD_AUTHENTICATE:
4074                 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
4075                     auth_type == NL80211_AUTHTYPE_SAE)
4076                         return false;
4077                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
4078                                              NL80211_EXT_FEATURE_FILS_STA) &&
4079                     (auth_type == NL80211_AUTHTYPE_FILS_SK ||
4080                      auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
4081                      auth_type == NL80211_AUTHTYPE_FILS_PK))
4082                         return false;
4083                 return true;
4084         case NL80211_CMD_CONNECT:
4085                 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
4086                     auth_type == NL80211_AUTHTYPE_SAE)
4087                         return false;
4088
4089                 /* FILS with SK PFS or PK not supported yet */
4090                 if (auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
4091                     auth_type == NL80211_AUTHTYPE_FILS_PK)
4092                         return false;
4093                 if (!wiphy_ext_feature_isset(
4094                             &rdev->wiphy,
4095                             NL80211_EXT_FEATURE_FILS_SK_OFFLOAD) &&
4096                     auth_type == NL80211_AUTHTYPE_FILS_SK)
4097                         return false;
4098                 return true;
4099         case NL80211_CMD_START_AP:
4100                 /* SAE not supported yet */
4101                 if (auth_type == NL80211_AUTHTYPE_SAE)
4102                         return false;
4103                 /* FILS not supported yet */
4104                 if (auth_type == NL80211_AUTHTYPE_FILS_SK ||
4105                     auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
4106                     auth_type == NL80211_AUTHTYPE_FILS_PK)
4107                         return false;
4108                 return true;
4109         default:
4110                 return false;
4111         }
4112 }
4113
4114 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
4115 {
4116         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4117         struct net_device *dev = info->user_ptr[1];
4118         struct wireless_dev *wdev = dev->ieee80211_ptr;
4119         struct cfg80211_ap_settings params;
4120         int err;
4121
4122         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4123             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4124                 return -EOPNOTSUPP;
4125
4126         if (!rdev->ops->start_ap)
4127                 return -EOPNOTSUPP;
4128
4129         if (wdev->beacon_interval)
4130                 return -EALREADY;
4131
4132         memset(&params, 0, sizeof(params));
4133
4134         /* these are required for START_AP */
4135         if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
4136             !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
4137             !info->attrs[NL80211_ATTR_BEACON_HEAD])
4138                 return -EINVAL;
4139
4140         err = nl80211_parse_beacon(info->attrs, &params.beacon);
4141         if (err)
4142                 return err;
4143
4144         params.beacon_interval =
4145                 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
4146         params.dtim_period =
4147                 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
4148
4149         err = cfg80211_validate_beacon_int(rdev, dev->ieee80211_ptr->iftype,
4150                                            params.beacon_interval);
4151         if (err)
4152                 return err;
4153
4154         /*
4155          * In theory, some of these attributes should be required here
4156          * but since they were not used when the command was originally
4157          * added, keep them optional for old user space programs to let
4158          * them continue to work with drivers that do not need the
4159          * additional information -- drivers must check!
4160          */
4161         if (info->attrs[NL80211_ATTR_SSID]) {
4162                 params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
4163                 params.ssid_len =
4164                         nla_len(info->attrs[NL80211_ATTR_SSID]);
4165                 if (params.ssid_len == 0 ||
4166                     params.ssid_len > IEEE80211_MAX_SSID_LEN)
4167                         return -EINVAL;
4168         }
4169
4170         if (info->attrs[NL80211_ATTR_HIDDEN_SSID]) {
4171                 params.hidden_ssid = nla_get_u32(
4172                         info->attrs[NL80211_ATTR_HIDDEN_SSID]);
4173                 if (params.hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE &&
4174                     params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_LEN &&
4175                     params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_CONTENTS)
4176                         return -EINVAL;
4177         }
4178
4179         params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
4180
4181         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
4182                 params.auth_type = nla_get_u32(
4183                         info->attrs[NL80211_ATTR_AUTH_TYPE]);
4184                 if (!nl80211_valid_auth_type(rdev, params.auth_type,
4185                                              NL80211_CMD_START_AP))
4186                         return -EINVAL;
4187         } else
4188                 params.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
4189
4190         err = nl80211_crypto_settings(rdev, info, &params.crypto,
4191                                       NL80211_MAX_NR_CIPHER_SUITES);
4192         if (err)
4193                 return err;
4194
4195         if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) {
4196                 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER))
4197                         return -EOPNOTSUPP;
4198                 params.inactivity_timeout = nla_get_u16(
4199                         info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]);
4200         }
4201
4202         if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
4203                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4204                         return -EINVAL;
4205                 params.p2p_ctwindow =
4206                         nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
4207                 if (params.p2p_ctwindow > 127)
4208                         return -EINVAL;
4209                 if (params.p2p_ctwindow != 0 &&
4210                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
4211                         return -EINVAL;
4212         }
4213
4214         if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
4215                 u8 tmp;
4216
4217                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4218                         return -EINVAL;
4219                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
4220                 if (tmp > 1)
4221                         return -EINVAL;
4222                 params.p2p_opp_ps = tmp;
4223                 if (params.p2p_opp_ps != 0 &&
4224                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
4225                         return -EINVAL;
4226         }
4227
4228         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
4229                 err = nl80211_parse_chandef(rdev, info, &params.chandef);
4230                 if (err)
4231                         return err;
4232         } else if (wdev->preset_chandef.chan) {
4233                 params.chandef = wdev->preset_chandef;
4234         } else if (!nl80211_get_ap_channel(rdev, &params))
4235                 return -EINVAL;
4236
4237         if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params.chandef,
4238                                            wdev->iftype))
4239                 return -EINVAL;
4240
4241         if (info->attrs[NL80211_ATTR_TX_RATES]) {
4242                 err = nl80211_parse_tx_bitrate_mask(info, &params.beacon_rate);
4243                 if (err)
4244                         return err;
4245
4246                 err = validate_beacon_tx_rate(rdev, params.chandef.chan->band,
4247                                               &params.beacon_rate);
4248                 if (err)
4249                         return err;
4250         }
4251
4252         if (info->attrs[NL80211_ATTR_SMPS_MODE]) {
4253                 params.smps_mode =
4254                         nla_get_u8(info->attrs[NL80211_ATTR_SMPS_MODE]);
4255                 switch (params.smps_mode) {
4256                 case NL80211_SMPS_OFF:
4257                         break;
4258                 case NL80211_SMPS_STATIC:
4259                         if (!(rdev->wiphy.features &
4260                               NL80211_FEATURE_STATIC_SMPS))
4261                                 return -EINVAL;
4262                         break;
4263                 case NL80211_SMPS_DYNAMIC:
4264                         if (!(rdev->wiphy.features &
4265                               NL80211_FEATURE_DYNAMIC_SMPS))
4266                                 return -EINVAL;
4267                         break;
4268                 default:
4269                         return -EINVAL;
4270                 }
4271         } else {
4272                 params.smps_mode = NL80211_SMPS_OFF;
4273         }
4274
4275         params.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
4276         if (params.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ])
4277                 return -EOPNOTSUPP;
4278
4279         if (info->attrs[NL80211_ATTR_ACL_POLICY]) {
4280                 params.acl = parse_acl_data(&rdev->wiphy, info);
4281                 if (IS_ERR(params.acl))
4282                         return PTR_ERR(params.acl);
4283         }
4284
4285         nl80211_calculate_ap_params(&params);
4286
4287         wdev_lock(wdev);
4288         err = rdev_start_ap(rdev, dev, &params);
4289         if (!err) {
4290                 wdev->preset_chandef = params.chandef;
4291                 wdev->beacon_interval = params.beacon_interval;
4292                 wdev->chandef = params.chandef;
4293                 wdev->ssid_len = params.ssid_len;
4294                 memcpy(wdev->ssid, params.ssid, wdev->ssid_len);
4295
4296                 if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
4297                         wdev->conn_owner_nlportid = info->snd_portid;
4298         }
4299         wdev_unlock(wdev);
4300
4301         kfree(params.acl);
4302
4303         return err;
4304 }
4305
4306 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info)
4307 {
4308         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4309         struct net_device *dev = info->user_ptr[1];
4310         struct wireless_dev *wdev = dev->ieee80211_ptr;
4311         struct cfg80211_beacon_data params;
4312         int err;
4313
4314         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4315             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4316                 return -EOPNOTSUPP;
4317
4318         if (!rdev->ops->change_beacon)
4319                 return -EOPNOTSUPP;
4320
4321         if (!wdev->beacon_interval)
4322                 return -EINVAL;
4323
4324         err = nl80211_parse_beacon(info->attrs, &params);
4325         if (err)
4326                 return err;
4327
4328         wdev_lock(wdev);
4329         err = rdev_change_beacon(rdev, dev, &params);
4330         wdev_unlock(wdev);
4331
4332         return err;
4333 }
4334
4335 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info)
4336 {
4337         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4338         struct net_device *dev = info->user_ptr[1];
4339
4340         return cfg80211_stop_ap(rdev, dev, false);
4341 }
4342
4343 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
4344         [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
4345         [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
4346         [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
4347         [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
4348         [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
4349         [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG },
4350 };
4351
4352 static int parse_station_flags(struct genl_info *info,
4353                                enum nl80211_iftype iftype,
4354                                struct station_parameters *params)
4355 {
4356         struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
4357         struct nlattr *nla;
4358         int flag;
4359
4360         /*
4361          * Try parsing the new attribute first so userspace
4362          * can specify both for older kernels.
4363          */
4364         nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
4365         if (nla) {
4366                 struct nl80211_sta_flag_update *sta_flags;
4367
4368                 sta_flags = nla_data(nla);
4369                 params->sta_flags_mask = sta_flags->mask;
4370                 params->sta_flags_set = sta_flags->set;
4371                 params->sta_flags_set &= params->sta_flags_mask;
4372                 if ((params->sta_flags_mask |
4373                      params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
4374                         return -EINVAL;
4375                 return 0;
4376         }
4377
4378         /* if present, parse the old attribute */
4379
4380         nla = info->attrs[NL80211_ATTR_STA_FLAGS];
4381         if (!nla)
4382                 return 0;
4383
4384         if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX, nla,
4385                              sta_flags_policy, info->extack))
4386                 return -EINVAL;
4387
4388         /*
4389          * Only allow certain flags for interface types so that
4390          * other attributes are silently ignored. Remember that
4391          * this is backward compatibility code with old userspace
4392          * and shouldn't be hit in other cases anyway.
4393          */
4394         switch (iftype) {
4395         case NL80211_IFTYPE_AP:
4396         case NL80211_IFTYPE_AP_VLAN:
4397         case NL80211_IFTYPE_P2P_GO:
4398                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
4399                                          BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
4400                                          BIT(NL80211_STA_FLAG_WME) |
4401                                          BIT(NL80211_STA_FLAG_MFP);
4402                 break;
4403         case NL80211_IFTYPE_P2P_CLIENT:
4404         case NL80211_IFTYPE_STATION:
4405                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
4406                                          BIT(NL80211_STA_FLAG_TDLS_PEER);
4407                 break;
4408         case NL80211_IFTYPE_MESH_POINT:
4409                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4410                                          BIT(NL80211_STA_FLAG_MFP) |
4411                                          BIT(NL80211_STA_FLAG_AUTHORIZED);
4412         default:
4413                 return -EINVAL;
4414         }
4415
4416         for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) {
4417                 if (flags[flag]) {
4418                         params->sta_flags_set |= (1<<flag);
4419
4420                         /* no longer support new API additions in old API */
4421                         if (flag > NL80211_STA_FLAG_MAX_OLD_API)
4422                                 return -EINVAL;
4423                 }
4424         }
4425
4426         return 0;
4427 }
4428
4429 static bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info,
4430                                  int attr)
4431 {
4432         struct nlattr *rate;
4433         u32 bitrate;
4434         u16 bitrate_compat;
4435         enum nl80211_rate_info rate_flg;
4436
4437         rate = nla_nest_start(msg, attr);
4438         if (!rate)
4439                 return false;
4440
4441         /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
4442         bitrate = cfg80211_calculate_bitrate(info);
4443         /* report 16-bit bitrate only if we can */
4444         bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0;
4445         if (bitrate > 0 &&
4446             nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate))
4447                 return false;
4448         if (bitrate_compat > 0 &&
4449             nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat))
4450                 return false;
4451
4452         switch (info->bw) {
4453         case RATE_INFO_BW_5:
4454                 rate_flg = NL80211_RATE_INFO_5_MHZ_WIDTH;
4455                 break;
4456         case RATE_INFO_BW_10:
4457                 rate_flg = NL80211_RATE_INFO_10_MHZ_WIDTH;
4458                 break;
4459         default:
4460                 WARN_ON(1);
4461                 /* fall through */
4462         case RATE_INFO_BW_20:
4463                 rate_flg = 0;
4464                 break;
4465         case RATE_INFO_BW_40:
4466                 rate_flg = NL80211_RATE_INFO_40_MHZ_WIDTH;
4467                 break;
4468         case RATE_INFO_BW_80:
4469                 rate_flg = NL80211_RATE_INFO_80_MHZ_WIDTH;
4470                 break;
4471         case RATE_INFO_BW_160:
4472                 rate_flg = NL80211_RATE_INFO_160_MHZ_WIDTH;
4473                 break;
4474         }
4475
4476         if (rate_flg && nla_put_flag(msg, rate_flg))
4477                 return false;
4478
4479         if (info->flags & RATE_INFO_FLAGS_MCS) {
4480                 if (nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs))
4481                         return false;
4482                 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
4483                     nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
4484                         return false;
4485         } else if (info->flags & RATE_INFO_FLAGS_VHT_MCS) {
4486                 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_MCS, info->mcs))
4487                         return false;
4488                 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_NSS, info->nss))
4489                         return false;
4490                 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
4491                     nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
4492                         return false;
4493         }
4494
4495         nla_nest_end(msg, rate);
4496         return true;
4497 }
4498
4499 static bool nl80211_put_signal(struct sk_buff *msg, u8 mask, s8 *signal,
4500                                int id)
4501 {
4502         void *attr;
4503         int i = 0;
4504
4505         if (!mask)
4506                 return true;
4507
4508         attr = nla_nest_start(msg, id);
4509         if (!attr)
4510                 return false;
4511
4512         for (i = 0; i < IEEE80211_MAX_CHAINS; i++) {
4513                 if (!(mask & BIT(i)))
4514                         continue;
4515
4516                 if (nla_put_u8(msg, i, signal[i]))
4517                         return false;
4518         }
4519
4520         nla_nest_end(msg, attr);
4521
4522         return true;
4523 }
4524
4525 static int nl80211_send_station(struct sk_buff *msg, u32 cmd, u32 portid,
4526                                 u32 seq, int flags,
4527                                 struct cfg80211_registered_device *rdev,
4528                                 struct net_device *dev,
4529                                 const u8 *mac_addr, struct station_info *sinfo)
4530 {
4531         void *hdr;
4532         struct nlattr *sinfoattr, *bss_param;
4533
4534         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
4535         if (!hdr)
4536                 return -1;
4537
4538         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
4539             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
4540             nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation))
4541                 goto nla_put_failure;
4542
4543         sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO);
4544         if (!sinfoattr)
4545                 goto nla_put_failure;
4546
4547 #define PUT_SINFO(attr, memb, type) do {                                \
4548         BUILD_BUG_ON(sizeof(type) == sizeof(u64));                      \
4549         if (sinfo->filled & (1ULL << NL80211_STA_INFO_ ## attr) &&      \
4550             nla_put_ ## type(msg, NL80211_STA_INFO_ ## attr,            \
4551                              sinfo->memb))                              \
4552                 goto nla_put_failure;                                   \
4553         } while (0)
4554 #define PUT_SINFO_U64(attr, memb) do {                                  \
4555         if (sinfo->filled & (1ULL << NL80211_STA_INFO_ ## attr) &&      \
4556             nla_put_u64_64bit(msg, NL80211_STA_INFO_ ## attr,           \
4557                               sinfo->memb, NL80211_STA_INFO_PAD))       \
4558                 goto nla_put_failure;                                   \
4559         } while (0)
4560
4561         PUT_SINFO(CONNECTED_TIME, connected_time, u32);
4562         PUT_SINFO(INACTIVE_TIME, inactive_time, u32);
4563
4564         if (sinfo->filled & (BIT(NL80211_STA_INFO_RX_BYTES) |
4565                              BIT(NL80211_STA_INFO_RX_BYTES64)) &&
4566             nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES,
4567                         (u32)sinfo->rx_bytes))
4568                 goto nla_put_failure;
4569
4570         if (sinfo->filled & (BIT(NL80211_STA_INFO_TX_BYTES) |
4571                              BIT(NL80211_STA_INFO_TX_BYTES64)) &&
4572             nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES,
4573                         (u32)sinfo->tx_bytes))
4574                 goto nla_put_failure;
4575
4576         PUT_SINFO_U64(RX_BYTES64, rx_bytes);
4577         PUT_SINFO_U64(TX_BYTES64, tx_bytes);
4578         PUT_SINFO(LLID, llid, u16);
4579         PUT_SINFO(PLID, plid, u16);
4580         PUT_SINFO(PLINK_STATE, plink_state, u8);
4581         PUT_SINFO_U64(RX_DURATION, rx_duration);
4582
4583         switch (rdev->wiphy.signal_type) {
4584         case CFG80211_SIGNAL_TYPE_MBM:
4585                 PUT_SINFO(SIGNAL, signal, u8);
4586                 PUT_SINFO(SIGNAL_AVG, signal_avg, u8);
4587                 break;
4588         default:
4589                 break;
4590         }
4591         if (sinfo->filled & BIT(NL80211_STA_INFO_CHAIN_SIGNAL)) {
4592                 if (!nl80211_put_signal(msg, sinfo->chains,
4593                                         sinfo->chain_signal,
4594                                         NL80211_STA_INFO_CHAIN_SIGNAL))
4595                         goto nla_put_failure;
4596         }
4597         if (sinfo->filled & BIT(NL80211_STA_INFO_CHAIN_SIGNAL_AVG)) {
4598                 if (!nl80211_put_signal(msg, sinfo->chains,
4599                                         sinfo->chain_signal_avg,
4600                                         NL80211_STA_INFO_CHAIN_SIGNAL_AVG))
4601                         goto nla_put_failure;
4602         }
4603         if (sinfo->filled & BIT(NL80211_STA_INFO_TX_BITRATE)) {
4604                 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
4605                                           NL80211_STA_INFO_TX_BITRATE))
4606                         goto nla_put_failure;
4607         }
4608         if (sinfo->filled & BIT(NL80211_STA_INFO_RX_BITRATE)) {
4609                 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
4610                                           NL80211_STA_INFO_RX_BITRATE))
4611                         goto nla_put_failure;
4612         }
4613
4614         PUT_SINFO(RX_PACKETS, rx_packets, u32);
4615         PUT_SINFO(TX_PACKETS, tx_packets, u32);
4616         PUT_SINFO(TX_RETRIES, tx_retries, u32);
4617         PUT_SINFO(TX_FAILED, tx_failed, u32);
4618         PUT_SINFO(EXPECTED_THROUGHPUT, expected_throughput, u32);
4619         PUT_SINFO(BEACON_LOSS, beacon_loss_count, u32);
4620         PUT_SINFO(LOCAL_PM, local_pm, u32);
4621         PUT_SINFO(PEER_PM, peer_pm, u32);
4622         PUT_SINFO(NONPEER_PM, nonpeer_pm, u32);
4623
4624         if (sinfo->filled & BIT(NL80211_STA_INFO_BSS_PARAM)) {
4625                 bss_param = nla_nest_start(msg, NL80211_STA_INFO_BSS_PARAM);
4626                 if (!bss_param)
4627                         goto nla_put_failure;
4628
4629                 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) &&
4630                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) ||
4631                     ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) &&
4632                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) ||
4633                     ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) &&
4634                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) ||
4635                     nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
4636                                sinfo->bss_param.dtim_period) ||
4637                     nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
4638                                 sinfo->bss_param.beacon_interval))
4639                         goto nla_put_failure;
4640
4641                 nla_nest_end(msg, bss_param);
4642         }
4643         if ((sinfo->filled & BIT(NL80211_STA_INFO_STA_FLAGS)) &&
4644             nla_put(msg, NL80211_STA_INFO_STA_FLAGS,
4645                     sizeof(struct nl80211_sta_flag_update),
4646                     &sinfo->sta_flags))
4647                 goto nla_put_failure;
4648
4649         PUT_SINFO_U64(T_OFFSET, t_offset);
4650         PUT_SINFO_U64(RX_DROP_MISC, rx_dropped_misc);
4651         PUT_SINFO_U64(BEACON_RX, rx_beacon);
4652         PUT_SINFO(BEACON_SIGNAL_AVG, rx_beacon_signal_avg, u8);
4653         PUT_SINFO(ACK_SIGNAL, ack_signal, u8);
4654         if (wiphy_ext_feature_isset(&rdev->wiphy,
4655                                     NL80211_EXT_FEATURE_DATA_ACK_SIGNAL_SUPPORT))
4656                 PUT_SINFO(DATA_ACK_SIGNAL_AVG, avg_ack_signal, s8);
4657
4658 #undef PUT_SINFO
4659 #undef PUT_SINFO_U64
4660
4661         if (sinfo->filled & BIT(NL80211_STA_INFO_TID_STATS)) {
4662                 struct nlattr *tidsattr;
4663                 int tid;
4664
4665                 tidsattr = nla_nest_start(msg, NL80211_STA_INFO_TID_STATS);
4666                 if (!tidsattr)
4667                         goto nla_put_failure;
4668
4669                 for (tid = 0; tid < IEEE80211_NUM_TIDS + 1; tid++) {
4670                         struct cfg80211_tid_stats *tidstats;
4671                         struct nlattr *tidattr;
4672
4673                         tidstats = &sinfo->pertid[tid];
4674
4675                         if (!tidstats->filled)
4676                                 continue;
4677
4678                         tidattr = nla_nest_start(msg, tid + 1);
4679                         if (!tidattr)
4680                                 goto nla_put_failure;
4681
4682 #define PUT_TIDVAL_U64(attr, memb) do {                                 \
4683         if (tidstats->filled & BIT(NL80211_TID_STATS_ ## attr) &&       \
4684             nla_put_u64_64bit(msg, NL80211_TID_STATS_ ## attr,          \
4685                               tidstats->memb, NL80211_TID_STATS_PAD))   \
4686                 goto nla_put_failure;                                   \
4687         } while (0)
4688
4689                         PUT_TIDVAL_U64(RX_MSDU, rx_msdu);
4690                         PUT_TIDVAL_U64(TX_MSDU, tx_msdu);
4691                         PUT_TIDVAL_U64(TX_MSDU_RETRIES, tx_msdu_retries);
4692                         PUT_TIDVAL_U64(TX_MSDU_FAILED, tx_msdu_failed);
4693
4694 #undef PUT_TIDVAL_U64
4695                         if ((tidstats->filled &
4696                              BIT(NL80211_TID_STATS_TXQ_STATS)) &&
4697                             !nl80211_put_txq_stats(msg, &tidstats->txq_stats,
4698                                                    NL80211_TID_STATS_TXQ_STATS))
4699                                 goto nla_put_failure;
4700
4701                         nla_nest_end(msg, tidattr);
4702                 }
4703
4704                 nla_nest_end(msg, tidsattr);
4705         }
4706
4707         nla_nest_end(msg, sinfoattr);
4708
4709         if (sinfo->assoc_req_ies_len &&
4710             nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
4711                     sinfo->assoc_req_ies))
4712                 goto nla_put_failure;
4713
4714         genlmsg_end(msg, hdr);
4715         return 0;
4716
4717  nla_put_failure:
4718         genlmsg_cancel(msg, hdr);
4719         return -EMSGSIZE;
4720 }
4721
4722 static int nl80211_dump_station(struct sk_buff *skb,
4723                                 struct netlink_callback *cb)
4724 {
4725         struct station_info *sinfo;
4726         struct cfg80211_registered_device *rdev;
4727         struct wireless_dev *wdev;
4728         u8 mac_addr[ETH_ALEN];
4729         int sta_idx = cb->args[2];
4730         int err;
4731
4732         sinfo = kzalloc(sizeof(*sinfo), GFP_KERNEL);
4733         if (!sinfo)
4734                 return -ENOMEM;
4735
4736         rtnl_lock();
4737         err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
4738         if (err)
4739                 goto out_err;
4740
4741         if (!wdev->netdev) {
4742                 err = -EINVAL;
4743                 goto out_err;
4744         }
4745
4746         if (!rdev->ops->dump_station) {
4747                 err = -EOPNOTSUPP;
4748                 goto out_err;
4749         }
4750
4751         while (1) {
4752                 memset(sinfo, 0, sizeof(*sinfo));
4753                 err = rdev_dump_station(rdev, wdev->netdev, sta_idx,
4754                                         mac_addr, sinfo);
4755                 if (err == -ENOENT)
4756                         break;
4757                 if (err)
4758                         goto out_err;
4759
4760                 if (nl80211_send_station(skb, NL80211_CMD_NEW_STATION,
4761                                 NETLINK_CB(cb->skb).portid,
4762                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
4763                                 rdev, wdev->netdev, mac_addr,
4764                                 sinfo) < 0)
4765                         goto out;
4766
4767                 sta_idx++;
4768         }
4769
4770  out:
4771         cb->args[2] = sta_idx;
4772         err = skb->len;
4773  out_err:
4774         rtnl_unlock();
4775         kfree(sinfo);
4776
4777         return err;
4778 }
4779
4780 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
4781 {
4782         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4783         struct net_device *dev = info->user_ptr[1];
4784         struct station_info *sinfo;
4785         struct sk_buff *msg;
4786         u8 *mac_addr = NULL;
4787         int err;
4788
4789         sinfo = kzalloc(sizeof(*sinfo), GFP_KERNEL);
4790         if (!sinfo)
4791                 return -ENOMEM;
4792
4793         if (!info->attrs[NL80211_ATTR_MAC]) {
4794                 err = -EINVAL;
4795                 goto out;
4796         }
4797
4798         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4799
4800         if (!rdev->ops->get_station) {
4801                 err = -EOPNOTSUPP;
4802                 goto out;
4803         }
4804
4805         err = rdev_get_station(rdev, dev, mac_addr, sinfo);
4806         if (err)
4807                 goto out;
4808
4809         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4810         if (!msg) {
4811                 err = -ENOMEM;
4812                 goto out;
4813         }
4814
4815         if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION,
4816                                  info->snd_portid, info->snd_seq, 0,
4817                                  rdev, dev, mac_addr, sinfo) < 0) {
4818                 nlmsg_free(msg);
4819                 err = -ENOBUFS;
4820                 goto out;
4821         }
4822
4823         err = genlmsg_reply(msg, info);
4824 out:
4825         kfree(sinfo);
4826         return err;
4827 }
4828
4829 int cfg80211_check_station_change(struct wiphy *wiphy,
4830                                   struct station_parameters *params,
4831                                   enum cfg80211_station_type statype)
4832 {
4833         if (params->listen_interval != -1 &&
4834             statype != CFG80211_STA_AP_CLIENT_UNASSOC)
4835                 return -EINVAL;
4836
4837         if (params->support_p2p_ps != -1 &&
4838             statype != CFG80211_STA_AP_CLIENT_UNASSOC)
4839                 return -EINVAL;
4840
4841         if (params->aid &&
4842             !(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) &&
4843             statype != CFG80211_STA_AP_CLIENT_UNASSOC)
4844                 return -EINVAL;
4845
4846         /* When you run into this, adjust the code below for the new flag */
4847         BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
4848
4849         switch (statype) {
4850         case CFG80211_STA_MESH_PEER_KERNEL:
4851         case CFG80211_STA_MESH_PEER_USER:
4852                 /*
4853                  * No ignoring the TDLS flag here -- the userspace mesh
4854                  * code doesn't have the bug of including TDLS in the
4855                  * mask everywhere.
4856                  */
4857                 if (params->sta_flags_mask &
4858                                 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4859                                   BIT(NL80211_STA_FLAG_MFP) |
4860                                   BIT(NL80211_STA_FLAG_AUTHORIZED)))
4861                         return -EINVAL;
4862                 break;
4863         case CFG80211_STA_TDLS_PEER_SETUP:
4864         case CFG80211_STA_TDLS_PEER_ACTIVE:
4865                 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
4866                         return -EINVAL;
4867                 /* ignore since it can't change */
4868                 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
4869                 break;
4870         default:
4871                 /* disallow mesh-specific things */
4872                 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
4873                         return -EINVAL;
4874                 if (params->local_pm)
4875                         return -EINVAL;
4876                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
4877                         return -EINVAL;
4878         }
4879
4880         if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
4881             statype != CFG80211_STA_TDLS_PEER_ACTIVE) {
4882                 /* TDLS can't be set, ... */
4883                 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
4884                         return -EINVAL;
4885                 /*
4886                  * ... but don't bother the driver with it. This works around
4887                  * a hostapd/wpa_supplicant issue -- it always includes the
4888                  * TLDS_PEER flag in the mask even for AP mode.
4889                  */
4890                 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
4891         }
4892
4893         if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
4894             statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
4895                 /* reject other things that can't change */
4896                 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD)
4897                         return -EINVAL;
4898                 if (params->sta_modify_mask & STATION_PARAM_APPLY_CAPABILITY)
4899                         return -EINVAL;
4900                 if (params->supported_rates)
4901                         return -EINVAL;
4902                 if (params->ext_capab || params->ht_capa || params->vht_capa)
4903                         return -EINVAL;
4904         }
4905
4906         if (statype != CFG80211_STA_AP_CLIENT &&
4907             statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
4908                 if (params->vlan)
4909                         return -EINVAL;
4910         }
4911
4912         switch (statype) {
4913         case CFG80211_STA_AP_MLME_CLIENT:
4914                 /* Use this only for authorizing/unauthorizing a station */
4915                 if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)))
4916                         return -EOPNOTSUPP;
4917                 break;
4918         case CFG80211_STA_AP_CLIENT:
4919         case CFG80211_STA_AP_CLIENT_UNASSOC:
4920                 /* accept only the listed bits */
4921                 if (params->sta_flags_mask &
4922                                 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
4923                                   BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4924                                   BIT(NL80211_STA_FLAG_ASSOCIATED) |
4925                                   BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
4926                                   BIT(NL80211_STA_FLAG_WME) |
4927                                   BIT(NL80211_STA_FLAG_MFP)))
4928                         return -EINVAL;
4929
4930                 /* but authenticated/associated only if driver handles it */
4931                 if (!(wiphy->features & NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
4932                     params->sta_flags_mask &
4933                                 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4934                                  BIT(NL80211_STA_FLAG_ASSOCIATED)))
4935                         return -EINVAL;
4936                 break;
4937         case CFG80211_STA_IBSS:
4938         case CFG80211_STA_AP_STA:
4939                 /* reject any changes other than AUTHORIZED */
4940                 if (params->sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
4941                         return -EINVAL;
4942                 break;
4943         case CFG80211_STA_TDLS_PEER_SETUP:
4944                 /* reject any changes other than AUTHORIZED or WME */
4945                 if (params->sta_flags_mask & ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
4946                                                BIT(NL80211_STA_FLAG_WME)))
4947                         return -EINVAL;
4948                 /* force (at least) rates when authorizing */
4949                 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED) &&
4950                     !params->supported_rates)
4951                         return -EINVAL;
4952                 break;
4953         case CFG80211_STA_TDLS_PEER_ACTIVE:
4954                 /* reject any changes */
4955                 return -EINVAL;
4956         case CFG80211_STA_MESH_PEER_KERNEL:
4957                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
4958                         return -EINVAL;
4959                 break;
4960         case CFG80211_STA_MESH_PEER_USER:
4961                 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION &&
4962                     params->plink_action != NL80211_PLINK_ACTION_BLOCK)
4963                         return -EINVAL;
4964                 break;
4965         }
4966
4967         /*
4968          * Older kernel versions ignored this attribute entirely, so don't
4969          * reject attempts to update it but mark it as unused instead so the
4970          * driver won't look at the data.
4971          */
4972         if (statype != CFG80211_STA_AP_CLIENT_UNASSOC &&
4973             statype != CFG80211_STA_TDLS_PEER_SETUP)
4974                 params->opmode_notif_used = false;
4975
4976         return 0;
4977 }
4978 EXPORT_SYMBOL(cfg80211_check_station_change);
4979
4980 /*
4981  * Get vlan interface making sure it is running and on the right wiphy.
4982  */
4983 static struct net_device *get_vlan(struct genl_info *info,
4984                                    struct cfg80211_registered_device *rdev)
4985 {
4986         struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
4987         struct net_device *v;
4988         int ret;
4989
4990         if (!vlanattr)
4991                 return NULL;
4992
4993         v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr));
4994         if (!v)
4995                 return ERR_PTR(-ENODEV);
4996
4997         if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) {
4998                 ret = -EINVAL;
4999                 goto error;
5000         }
5001
5002         if (v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
5003             v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5004             v->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
5005                 ret = -EINVAL;
5006                 goto error;
5007         }
5008
5009         if (!netif_running(v)) {
5010                 ret = -ENETDOWN;
5011                 goto error;
5012         }
5013
5014         return v;
5015  error:
5016         dev_put(v);
5017         return ERR_PTR(ret);
5018 }
5019
5020 static const struct nla_policy
5021 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] = {
5022         [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
5023         [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
5024 };
5025
5026 static int nl80211_parse_sta_wme(struct genl_info *info,
5027                                  struct station_parameters *params)
5028 {
5029         struct nlattr *tb[NL80211_STA_WME_MAX + 1];
5030         struct nlattr *nla;
5031         int err;
5032
5033         /* parse WME attributes if present */
5034         if (!info->attrs[NL80211_ATTR_STA_WME])
5035                 return 0;
5036
5037         nla = info->attrs[NL80211_ATTR_STA_WME];
5038         err = nla_parse_nested(tb, NL80211_STA_WME_MAX, nla,
5039                                nl80211_sta_wme_policy, info->extack);
5040         if (err)
5041                 return err;
5042
5043         if (tb[NL80211_STA_WME_UAPSD_QUEUES])
5044                 params->uapsd_queues = nla_get_u8(
5045                         tb[NL80211_STA_WME_UAPSD_QUEUES]);
5046         if (params->uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
5047                 return -EINVAL;
5048
5049         if (tb[NL80211_STA_WME_MAX_SP])
5050                 params->max_sp = nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
5051
5052         if (params->max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
5053                 return -EINVAL;
5054
5055         params->sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
5056
5057         return 0;
5058 }
5059
5060 static int nl80211_parse_sta_channel_info(struct genl_info *info,
5061                                       struct station_parameters *params)
5062 {
5063         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]) {
5064                 params->supported_channels =
5065                      nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
5066                 params->supported_channels_len =
5067                      nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
5068                 /*
5069                  * Need to include at least one (first channel, number of
5070                  * channels) tuple for each subband, and must have proper
5071                  * tuples for the rest of the data as well.
5072                  */
5073                 if (params->supported_channels_len < 2)
5074                         return -EINVAL;
5075                 if (params->supported_channels_len % 2)
5076                         return -EINVAL;
5077         }
5078
5079         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]) {
5080                 params->supported_oper_classes =
5081                  nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
5082                 params->supported_oper_classes_len =
5083                   nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
5084                 /*
5085                  * The value of the Length field of the Supported Operating
5086                  * Classes element is between 2 and 253.
5087                  */
5088                 if (params->supported_oper_classes_len < 2 ||
5089                     params->supported_oper_classes_len > 253)
5090                         return -EINVAL;
5091         }
5092         return 0;
5093 }
5094
5095 static int nl80211_set_station_tdls(struct genl_info *info,
5096                                     struct station_parameters *params)
5097 {
5098         int err;
5099         /* Dummy STA entry gets updated once the peer capabilities are known */
5100         if (info->attrs[NL80211_ATTR_PEER_AID])
5101                 params->aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
5102         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
5103                 params->ht_capa =
5104                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
5105         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
5106                 params->vht_capa =
5107                         nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
5108
5109         err = nl80211_parse_sta_channel_info(info, params);
5110         if (err)
5111                 return err;
5112
5113         return nl80211_parse_sta_wme(info, params);
5114 }
5115
5116 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
5117 {
5118         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5119         struct net_device *dev = info->user_ptr[1];
5120         struct station_parameters params;
5121         u8 *mac_addr;
5122         int err;
5123
5124         memset(&params, 0, sizeof(params));
5125
5126         if (!rdev->ops->change_station)
5127                 return -EOPNOTSUPP;
5128
5129         /*
5130          * AID and listen_interval properties can be set only for unassociated
5131          * station. Include these parameters here and will check them in
5132          * cfg80211_check_station_change().
5133          */
5134         if (info->attrs[NL80211_ATTR_STA_AID])
5135                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
5136
5137         if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
5138                 params.listen_interval =
5139                      nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
5140         else
5141                 params.listen_interval = -1;
5142
5143         if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]) {
5144                 u8 tmp;
5145
5146                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
5147                 if (tmp >= NUM_NL80211_P2P_PS_STATUS)
5148                         return -EINVAL;
5149
5150                 params.support_p2p_ps = tmp;
5151         } else {
5152                 params.support_p2p_ps = -1;
5153         }
5154
5155         if (!info->attrs[NL80211_ATTR_MAC])
5156                 return -EINVAL;
5157
5158         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
5159
5160         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
5161                 params.supported_rates =
5162                         nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
5163                 params.supported_rates_len =
5164                         nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
5165         }
5166
5167         if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
5168                 params.capability =
5169                         nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
5170                 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
5171         }
5172
5173         if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
5174                 params.ext_capab =
5175                         nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
5176                 params.ext_capab_len =
5177                         nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
5178         }
5179
5180         if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
5181                 return -EINVAL;
5182
5183         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
5184                 params.plink_action =
5185                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
5186                 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
5187                         return -EINVAL;
5188         }
5189
5190         if (info->attrs[NL80211_ATTR_STA_PLINK_STATE]) {
5191                 params.plink_state =
5192                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
5193                 if (params.plink_state >= NUM_NL80211_PLINK_STATES)
5194                         return -EINVAL;
5195                 if (info->attrs[NL80211_ATTR_MESH_PEER_AID]) {
5196                         params.peer_aid = nla_get_u16(
5197                                 info->attrs[NL80211_ATTR_MESH_PEER_AID]);
5198                         if (params.peer_aid > IEEE80211_MAX_AID)
5199                                 return -EINVAL;
5200                 }
5201                 params.sta_modify_mask |= STATION_PARAM_APPLY_PLINK_STATE;
5202         }
5203
5204         if (info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]) {
5205                 enum nl80211_mesh_power_mode pm = nla_get_u32(
5206                         info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]);
5207
5208                 if (pm <= NL80211_MESH_POWER_UNKNOWN ||
5209                     pm > NL80211_MESH_POWER_MAX)
5210                         return -EINVAL;
5211
5212                 params.local_pm = pm;
5213         }
5214
5215         if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
5216                 params.opmode_notif_used = true;
5217                 params.opmode_notif =
5218                         nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
5219         }
5220
5221         /* Include parameters for TDLS peer (will check later) */
5222         err = nl80211_set_station_tdls(info, &params);
5223         if (err)
5224                 return err;
5225
5226         params.vlan = get_vlan(info, rdev);
5227         if (IS_ERR(params.vlan))
5228                 return PTR_ERR(params.vlan);
5229
5230         switch (dev->ieee80211_ptr->iftype) {
5231         case NL80211_IFTYPE_AP:
5232         case NL80211_IFTYPE_AP_VLAN:
5233         case NL80211_IFTYPE_P2P_GO:
5234         case NL80211_IFTYPE_P2P_CLIENT:
5235         case NL80211_IFTYPE_STATION:
5236         case NL80211_IFTYPE_ADHOC:
5237         case NL80211_IFTYPE_MESH_POINT:
5238                 break;
5239         default:
5240                 err = -EOPNOTSUPP;
5241                 goto out_put_vlan;
5242         }
5243
5244         /* driver will call cfg80211_check_station_change() */
5245         err = rdev_change_station(rdev, dev, mac_addr, &params);
5246
5247  out_put_vlan:
5248         if (params.vlan)
5249                 dev_put(params.vlan);
5250
5251         return err;
5252 }
5253
5254 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
5255 {
5256         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5257         int err;
5258         struct net_device *dev = info->user_ptr[1];
5259         struct station_parameters params;
5260         u8 *mac_addr = NULL;
5261         u32 auth_assoc = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
5262                          BIT(NL80211_STA_FLAG_ASSOCIATED);
5263
5264         memset(&params, 0, sizeof(params));
5265
5266         if (!rdev->ops->add_station)
5267                 return -EOPNOTSUPP;
5268
5269         if (!info->attrs[NL80211_ATTR_MAC])
5270                 return -EINVAL;
5271
5272         if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
5273                 return -EINVAL;
5274
5275         if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
5276                 return -EINVAL;
5277
5278         if (!info->attrs[NL80211_ATTR_STA_AID] &&
5279             !info->attrs[NL80211_ATTR_PEER_AID])
5280                 return -EINVAL;
5281
5282         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
5283         params.supported_rates =
5284                 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
5285         params.supported_rates_len =
5286                 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
5287         params.listen_interval =
5288                 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
5289
5290         if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]) {
5291                 u8 tmp;
5292
5293                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
5294                 if (tmp >= NUM_NL80211_P2P_PS_STATUS)
5295                         return -EINVAL;
5296
5297                 params.support_p2p_ps = tmp;
5298         } else {
5299                 /*
5300                  * if not specified, assume it's supported for P2P GO interface,
5301                  * and is NOT supported for AP interface
5302                  */
5303                 params.support_p2p_ps =
5304                         dev->ieee80211_ptr->iftype == NL80211_IFTYPE_P2P_GO;
5305         }
5306
5307         if (info->attrs[NL80211_ATTR_PEER_AID])
5308                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
5309         else
5310                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
5311         if (!params.aid || params.aid > IEEE80211_MAX_AID)
5312                 return -EINVAL;
5313
5314         if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
5315                 params.capability =
5316                         nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
5317                 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
5318         }
5319
5320         if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
5321                 params.ext_capab =
5322                         nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
5323                 params.ext_capab_len =
5324                         nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
5325         }
5326
5327         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
5328                 params.ht_capa =
5329                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
5330
5331         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
5332                 params.vht_capa =
5333                         nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
5334
5335         if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
5336                 params.opmode_notif_used = true;
5337                 params.opmode_notif =
5338                         nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
5339         }
5340
5341         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
5342                 params.plink_action =
5343                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
5344                 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
5345                         return -EINVAL;
5346         }
5347
5348         err = nl80211_parse_sta_channel_info(info, &params);
5349         if (err)
5350                 return err;
5351
5352         err = nl80211_parse_sta_wme(info, &params);
5353         if (err)
5354                 return err;
5355
5356         if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
5357                 return -EINVAL;
5358
5359         /* HT/VHT requires QoS, but if we don't have that just ignore HT/VHT
5360          * as userspace might just pass through the capabilities from the IEs
5361          * directly, rather than enforcing this restriction and returning an
5362          * error in this case.
5363          */
5364         if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME))) {
5365                 params.ht_capa = NULL;
5366                 params.vht_capa = NULL;
5367         }
5368
5369         /* When you run into this, adjust the code below for the new flag */
5370         BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
5371
5372         switch (dev->ieee80211_ptr->iftype) {
5373         case NL80211_IFTYPE_AP:
5374         case NL80211_IFTYPE_AP_VLAN:
5375         case NL80211_IFTYPE_P2P_GO:
5376                 /* ignore WME attributes if iface/sta is not capable */
5377                 if (!(rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) ||
5378                     !(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)))
5379                         params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
5380
5381                 /* TDLS peers cannot be added */
5382                 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
5383                     info->attrs[NL80211_ATTR_PEER_AID])
5384                         return -EINVAL;
5385                 /* but don't bother the driver with it */
5386                 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
5387
5388                 /* allow authenticated/associated only if driver handles it */
5389                 if (!(rdev->wiphy.features &
5390                                 NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
5391                     params.sta_flags_mask & auth_assoc)
5392                         return -EINVAL;
5393
5394                 /* Older userspace, or userspace wanting to be compatible with
5395                  * !NL80211_FEATURE_FULL_AP_CLIENT_STATE, will not set the auth
5396                  * and assoc flags in the mask, but assumes the station will be
5397                  * added as associated anyway since this was the required driver
5398                  * behaviour before NL80211_FEATURE_FULL_AP_CLIENT_STATE was
5399                  * introduced.
5400                  * In order to not bother drivers with this quirk in the API
5401                  * set the flags in both the mask and set for new stations in
5402                  * this case.
5403                  */
5404                 if (!(params.sta_flags_mask & auth_assoc)) {
5405                         params.sta_flags_mask |= auth_assoc;
5406                         params.sta_flags_set |= auth_assoc;
5407                 }
5408
5409                 /* must be last in here for error handling */
5410                 params.vlan = get_vlan(info, rdev);
5411                 if (IS_ERR(params.vlan))
5412                         return PTR_ERR(params.vlan);
5413                 break;
5414         case NL80211_IFTYPE_MESH_POINT:
5415                 /* ignore uAPSD data */
5416                 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
5417
5418                 /* associated is disallowed */
5419                 if (params.sta_flags_mask & BIT(NL80211_STA_FLAG_ASSOCIATED))
5420                         return -EINVAL;
5421                 /* TDLS peers cannot be added */
5422                 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
5423                     info->attrs[NL80211_ATTR_PEER_AID])
5424                         return -EINVAL;
5425                 break;
5426         case NL80211_IFTYPE_STATION:
5427         case NL80211_IFTYPE_P2P_CLIENT:
5428                 /* ignore uAPSD data */
5429                 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
5430
5431                 /* these are disallowed */
5432                 if (params.sta_flags_mask &
5433                                 (BIT(NL80211_STA_FLAG_ASSOCIATED) |
5434                                  BIT(NL80211_STA_FLAG_AUTHENTICATED)))
5435                         return -EINVAL;
5436                 /* Only TDLS peers can be added */
5437                 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
5438                         return -EINVAL;
5439                 /* Can only add if TDLS ... */
5440                 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS))
5441                         return -EOPNOTSUPP;
5442                 /* ... with external setup is supported */
5443                 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP))
5444                         return -EOPNOTSUPP;
5445                 /*
5446                  * Older wpa_supplicant versions always mark the TDLS peer
5447                  * as authorized, but it shouldn't yet be.
5448                  */
5449                 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_AUTHORIZED);
5450                 break;
5451         default:
5452                 return -EOPNOTSUPP;
5453         }
5454
5455         /* be aware of params.vlan when changing code here */
5456
5457         err = rdev_add_station(rdev, dev, mac_addr, &params);
5458
5459         if (params.vlan)
5460                 dev_put(params.vlan);
5461         return err;
5462 }
5463
5464 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
5465 {
5466         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5467         struct net_device *dev = info->user_ptr[1];
5468         struct station_del_parameters params;
5469
5470         memset(&params, 0, sizeof(params));
5471
5472         if (info->attrs[NL80211_ATTR_MAC])
5473                 params.mac = nla_data(info->attrs[NL80211_ATTR_MAC]);
5474
5475         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5476             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
5477             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
5478             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5479                 return -EINVAL;
5480
5481         if (!rdev->ops->del_station)
5482                 return -EOPNOTSUPP;
5483
5484         if (info->attrs[NL80211_ATTR_MGMT_SUBTYPE]) {
5485                 params.subtype =
5486                         nla_get_u8(info->attrs[NL80211_ATTR_MGMT_SUBTYPE]);
5487                 if (params.subtype != IEEE80211_STYPE_DISASSOC >> 4 &&
5488                     params.subtype != IEEE80211_STYPE_DEAUTH >> 4)
5489                         return -EINVAL;
5490         } else {
5491                 /* Default to Deauthentication frame */
5492                 params.subtype = IEEE80211_STYPE_DEAUTH >> 4;
5493         }
5494
5495         if (info->attrs[NL80211_ATTR_REASON_CODE]) {
5496                 params.reason_code =
5497                         nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
5498                 if (params.reason_code == 0)
5499                         return -EINVAL; /* 0 is reserved */
5500         } else {
5501                 /* Default to reason code 2 */
5502                 params.reason_code = WLAN_REASON_PREV_AUTH_NOT_VALID;
5503         }
5504
5505         return rdev_del_station(rdev, dev, &params);
5506 }
5507
5508 static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq,
5509                                 int flags, struct net_device *dev,
5510                                 u8 *dst, u8 *next_hop,
5511                                 struct mpath_info *pinfo)
5512 {
5513         void *hdr;
5514         struct nlattr *pinfoattr;
5515
5516         hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_MPATH);
5517         if (!hdr)
5518                 return -1;
5519
5520         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
5521             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
5522             nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) ||
5523             nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation))
5524                 goto nla_put_failure;
5525
5526         pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO);
5527         if (!pinfoattr)
5528                 goto nla_put_failure;
5529         if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) &&
5530             nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
5531                         pinfo->frame_qlen))
5532                 goto nla_put_failure;
5533         if (((pinfo->filled & MPATH_INFO_SN) &&
5534              nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) ||
5535             ((pinfo->filled & MPATH_INFO_METRIC) &&
5536              nla_put_u32(msg, NL80211_MPATH_INFO_METRIC,
5537                          pinfo->metric)) ||
5538             ((pinfo->filled & MPATH_INFO_EXPTIME) &&
5539              nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME,
5540                          pinfo->exptime)) ||
5541             ((pinfo->filled & MPATH_INFO_FLAGS) &&
5542              nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS,
5543                         pinfo->flags)) ||
5544             ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) &&
5545              nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
5546                          pinfo->discovery_timeout)) ||
5547             ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) &&
5548              nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
5549                         pinfo->discovery_retries)))
5550                 goto nla_put_failure;
5551
5552         nla_nest_end(msg, pinfoattr);
5553
5554         genlmsg_end(msg, hdr);
5555         return 0;
5556
5557  nla_put_failure:
5558         genlmsg_cancel(msg, hdr);
5559         return -EMSGSIZE;
5560 }
5561
5562 static int nl80211_dump_mpath(struct sk_buff *skb,
5563                               struct netlink_callback *cb)
5564 {
5565         struct mpath_info pinfo;
5566         struct cfg80211_registered_device *rdev;
5567         struct wireless_dev *wdev;
5568         u8 dst[ETH_ALEN];
5569         u8 next_hop[ETH_ALEN];
5570         int path_idx = cb->args[2];
5571         int err;
5572
5573         rtnl_lock();
5574         err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
5575         if (err)
5576                 goto out_err;
5577
5578         if (!rdev->ops->dump_mpath) {
5579                 err = -EOPNOTSUPP;
5580                 goto out_err;
5581         }
5582
5583         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
5584                 err = -EOPNOTSUPP;
5585                 goto out_err;
5586         }
5587
5588         while (1) {
5589                 err = rdev_dump_mpath(rdev, wdev->netdev, path_idx, dst,
5590                                       next_hop, &pinfo);
5591                 if (err == -ENOENT)
5592                         break;
5593                 if (err)
5594                         goto out_err;
5595
5596                 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
5597                                        cb->nlh->nlmsg_seq, NLM_F_MULTI,
5598                                        wdev->netdev, dst, next_hop,
5599                                        &pinfo) < 0)
5600                         goto out;
5601
5602                 path_idx++;
5603         }
5604
5605  out:
5606         cb->args[2] = path_idx;
5607         err = skb->len;
5608  out_err:
5609         rtnl_unlock();
5610         return err;
5611 }
5612
5613 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
5614 {
5615         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5616         int err;
5617         struct net_device *dev = info->user_ptr[1];
5618         struct mpath_info pinfo;
5619         struct sk_buff *msg;
5620         u8 *dst = NULL;
5621         u8 next_hop[ETH_ALEN];
5622
5623         memset(&pinfo, 0, sizeof(pinfo));
5624
5625         if (!info->attrs[NL80211_ATTR_MAC])
5626                 return -EINVAL;
5627
5628         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
5629
5630         if (!rdev->ops->get_mpath)
5631                 return -EOPNOTSUPP;
5632
5633         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
5634                 return -EOPNOTSUPP;
5635
5636         err = rdev_get_mpath(rdev, dev, dst, next_hop, &pinfo);
5637         if (err)
5638                 return err;
5639
5640         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5641         if (!msg)
5642                 return -ENOMEM;
5643
5644         if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
5645                                  dev, dst, next_hop, &pinfo) < 0) {
5646                 nlmsg_free(msg);
5647                 return -ENOBUFS;
5648         }
5649
5650         return genlmsg_reply(msg, info);
5651 }
5652
5653 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
5654 {
5655         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5656         struct net_device *dev = info->user_ptr[1];
5657         u8 *dst = NULL;
5658         u8 *next_hop = NULL;
5659
5660         if (!info->attrs[NL80211_ATTR_MAC])
5661                 return -EINVAL;
5662
5663         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
5664                 return -EINVAL;
5665
5666         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
5667         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
5668
5669         if (!rdev->ops->change_mpath)
5670                 return -EOPNOTSUPP;
5671
5672         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
5673                 return -EOPNOTSUPP;
5674
5675         return rdev_change_mpath(rdev, dev, dst, next_hop);
5676 }
5677
5678 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
5679 {
5680         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5681         struct net_device *dev = info->user_ptr[1];
5682         u8 *dst = NULL;
5683         u8 *next_hop = NULL;
5684
5685         if (!info->attrs[NL80211_ATTR_MAC])
5686                 return -EINVAL;
5687
5688         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
5689                 return -EINVAL;
5690
5691         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
5692         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
5693
5694         if (!rdev->ops->add_mpath)
5695                 return -EOPNOTSUPP;
5696
5697         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
5698                 return -EOPNOTSUPP;
5699
5700         return rdev_add_mpath(rdev, dev, dst, next_hop);
5701 }
5702
5703 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
5704 {
5705         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5706         struct net_device *dev = info->user_ptr[1];
5707         u8 *dst = NULL;
5708
5709         if (info->attrs[NL80211_ATTR_MAC])
5710                 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
5711
5712         if (!rdev->ops->del_mpath)
5713                 return -EOPNOTSUPP;
5714
5715         return rdev_del_mpath(rdev, dev, dst);
5716 }
5717
5718 static int nl80211_get_mpp(struct sk_buff *skb, struct genl_info *info)
5719 {
5720         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5721         int err;
5722         struct net_device *dev = info->user_ptr[1];
5723         struct mpath_info pinfo;
5724         struct sk_buff *msg;
5725         u8 *dst = NULL;
5726         u8 mpp[ETH_ALEN];
5727
5728         memset(&pinfo, 0, sizeof(pinfo));
5729
5730         if (!info->attrs[NL80211_ATTR_MAC])
5731                 return -EINVAL;
5732
5733         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
5734
5735         if (!rdev->ops->get_mpp)
5736                 return -EOPNOTSUPP;
5737
5738         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
5739                 return -EOPNOTSUPP;
5740
5741         err = rdev_get_mpp(rdev, dev, dst, mpp, &pinfo);
5742         if (err)
5743                 return err;
5744
5745         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5746         if (!msg)
5747                 return -ENOMEM;
5748
5749         if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
5750                                dev, dst, mpp, &pinfo) < 0) {
5751                 nlmsg_free(msg);
5752                 return -ENOBUFS;
5753         }
5754
5755         return genlmsg_reply(msg, info);
5756 }
5757
5758 static int nl80211_dump_mpp(struct sk_buff *skb,
5759                             struct netlink_callback *cb)
5760 {
5761         struct mpath_info pinfo;
5762         struct cfg80211_registered_device *rdev;
5763         struct wireless_dev *wdev;
5764         u8 dst[ETH_ALEN];
5765         u8 mpp[ETH_ALEN];
5766         int path_idx = cb->args[2];
5767         int err;
5768
5769         rtnl_lock();
5770         err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
5771         if (err)
5772                 goto out_err;
5773
5774         if (!rdev->ops->dump_mpp) {
5775                 err = -EOPNOTSUPP;
5776                 goto out_err;
5777         }
5778
5779         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
5780                 err = -EOPNOTSUPP;
5781                 goto out_err;
5782         }
5783
5784         while (1) {
5785                 err = rdev_dump_mpp(rdev, wdev->netdev, path_idx, dst,
5786                                     mpp, &pinfo);
5787                 if (err == -ENOENT)
5788                         break;
5789                 if (err)
5790                         goto out_err;
5791
5792                 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
5793                                        cb->nlh->nlmsg_seq, NLM_F_MULTI,
5794                                        wdev->netdev, dst, mpp,
5795                                        &pinfo) < 0)
5796                         goto out;
5797
5798                 path_idx++;
5799         }
5800
5801  out:
5802         cb->args[2] = path_idx;
5803         err = skb->len;
5804  out_err:
5805         rtnl_unlock();
5806         return err;
5807 }
5808
5809 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
5810 {
5811         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5812         struct net_device *dev = info->user_ptr[1];
5813         struct wireless_dev *wdev = dev->ieee80211_ptr;
5814         struct bss_parameters params;
5815         int err;
5816
5817         memset(&params, 0, sizeof(params));
5818         /* default to not changing parameters */
5819         params.use_cts_prot = -1;
5820         params.use_short_preamble = -1;
5821         params.use_short_slot_time = -1;
5822         params.ap_isolate = -1;
5823         params.ht_opmode = -1;
5824         params.p2p_ctwindow = -1;
5825         params.p2p_opp_ps = -1;
5826
5827         if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
5828                 params.use_cts_prot =
5829                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
5830         if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
5831                 params.use_short_preamble =
5832                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
5833         if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
5834                 params.use_short_slot_time =
5835                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
5836         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
5837                 params.basic_rates =
5838                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
5839                 params.basic_rates_len =
5840                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
5841         }
5842         if (info->attrs[NL80211_ATTR_AP_ISOLATE])
5843                 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
5844         if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
5845                 params.ht_opmode =
5846                         nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
5847
5848         if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
5849                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5850                         return -EINVAL;
5851                 params.p2p_ctwindow =
5852                         nla_get_s8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
5853                 if (params.p2p_ctwindow < 0)
5854                         return -EINVAL;
5855                 if (params.p2p_ctwindow != 0 &&
5856                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
5857                         return -EINVAL;
5858         }
5859
5860         if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
5861                 u8 tmp;
5862
5863                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5864                         return -EINVAL;
5865                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
5866                 if (tmp > 1)
5867                         return -EINVAL;
5868                 params.p2p_opp_ps = tmp;
5869                 if (params.p2p_opp_ps &&
5870                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
5871                         return -EINVAL;
5872         }
5873
5874         if (!rdev->ops->change_bss)
5875                 return -EOPNOTSUPP;
5876
5877         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5878             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5879                 return -EOPNOTSUPP;
5880
5881         wdev_lock(wdev);
5882         err = rdev_change_bss(rdev, dev, &params);
5883         wdev_unlock(wdev);
5884
5885         return err;
5886 }
5887
5888 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
5889 {
5890         char *data = NULL;
5891         bool is_indoor;
5892         enum nl80211_user_reg_hint_type user_reg_hint_type;
5893         u32 owner_nlportid;
5894
5895         /*
5896          * You should only get this when cfg80211 hasn't yet initialized
5897          * completely when built-in to the kernel right between the time
5898          * window between nl80211_init() and regulatory_init(), if that is
5899          * even possible.
5900          */
5901         if (unlikely(!rcu_access_pointer(cfg80211_regdomain)))
5902                 return -EINPROGRESS;
5903
5904         if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE])
5905                 user_reg_hint_type =
5906                   nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]);
5907         else
5908                 user_reg_hint_type = NL80211_USER_REG_HINT_USER;
5909
5910         switch (user_reg_hint_type) {
5911         case NL80211_USER_REG_HINT_USER:
5912         case NL80211_USER_REG_HINT_CELL_BASE:
5913                 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
5914                         return -EINVAL;
5915
5916                 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
5917                 return regulatory_hint_user(data, user_reg_hint_type);
5918         case NL80211_USER_REG_HINT_INDOOR:
5919                 if (info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
5920                         owner_nlportid = info->snd_portid;
5921                         is_indoor = !!info->attrs[NL80211_ATTR_REG_INDOOR];
5922                 } else {
5923                         owner_nlportid = 0;
5924                         is_indoor = true;
5925                 }
5926
5927                 return regulatory_hint_indoor(is_indoor, owner_nlportid);
5928         default:
5929                 return -EINVAL;
5930         }
5931 }
5932
5933 static int nl80211_reload_regdb(struct sk_buff *skb, struct genl_info *info)
5934 {
5935         return reg_reload_regdb();
5936 }
5937
5938 static int nl80211_get_mesh_config(struct sk_buff *skb,
5939                                    struct genl_info *info)
5940 {
5941         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5942         struct net_device *dev = info->user_ptr[1];
5943         struct wireless_dev *wdev = dev->ieee80211_ptr;
5944         struct mesh_config cur_params;
5945         int err = 0;
5946         void *hdr;
5947         struct nlattr *pinfoattr;
5948         struct sk_buff *msg;
5949
5950         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
5951                 return -EOPNOTSUPP;
5952
5953         if (!rdev->ops->get_mesh_config)
5954                 return -EOPNOTSUPP;
5955
5956         wdev_lock(wdev);
5957         /* If not connected, get default parameters */
5958         if (!wdev->mesh_id_len)
5959                 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
5960         else
5961                 err = rdev_get_mesh_config(rdev, dev, &cur_params);
5962         wdev_unlock(wdev);
5963
5964         if (err)
5965                 return err;
5966
5967         /* Draw up a netlink message to send back */
5968         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5969         if (!msg)
5970                 return -ENOMEM;
5971         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
5972                              NL80211_CMD_GET_MESH_CONFIG);
5973         if (!hdr)
5974                 goto out;
5975         pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG);
5976         if (!pinfoattr)
5977                 goto nla_put_failure;
5978         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
5979             nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
5980                         cur_params.dot11MeshRetryTimeout) ||
5981             nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
5982                         cur_params.dot11MeshConfirmTimeout) ||
5983             nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
5984                         cur_params.dot11MeshHoldingTimeout) ||
5985             nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
5986                         cur_params.dot11MeshMaxPeerLinks) ||
5987             nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES,
5988                        cur_params.dot11MeshMaxRetries) ||
5989             nla_put_u8(msg, NL80211_MESHCONF_TTL,
5990                        cur_params.dot11MeshTTL) ||
5991             nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL,
5992                        cur_params.element_ttl) ||
5993             nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
5994                        cur_params.auto_open_plinks) ||
5995             nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
5996                         cur_params.dot11MeshNbrOffsetMaxNeighbor) ||
5997             nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
5998                        cur_params.dot11MeshHWMPmaxPREQretries) ||
5999             nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
6000                         cur_params.path_refresh_time) ||
6001             nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
6002                         cur_params.min_discovery_timeout) ||
6003             nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
6004                         cur_params.dot11MeshHWMPactivePathTimeout) ||
6005             nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
6006                         cur_params.dot11MeshHWMPpreqMinInterval) ||
6007             nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
6008                         cur_params.dot11MeshHWMPperrMinInterval) ||
6009             nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
6010                         cur_params.dot11MeshHWMPnetDiameterTraversalTime) ||
6011             nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
6012                        cur_params.dot11MeshHWMPRootMode) ||
6013             nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
6014                         cur_params.dot11MeshHWMPRannInterval) ||
6015             nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
6016                        cur_params.dot11MeshGateAnnouncementProtocol) ||
6017             nla_put_u8(msg, NL80211_MESHCONF_FORWARDING,
6018                        cur_params.dot11MeshForwarding) ||
6019             nla_put_s32(msg, NL80211_MESHCONF_RSSI_THRESHOLD,
6020                         cur_params.rssi_threshold) ||
6021             nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE,
6022                         cur_params.ht_opmode) ||
6023             nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
6024                         cur_params.dot11MeshHWMPactivePathToRootTimeout) ||
6025             nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
6026                         cur_params.dot11MeshHWMProotInterval) ||
6027             nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
6028                         cur_params.dot11MeshHWMPconfirmationInterval) ||
6029             nla_put_u32(msg, NL80211_MESHCONF_POWER_MODE,
6030                         cur_params.power_mode) ||
6031             nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW,
6032                         cur_params.dot11MeshAwakeWindowDuration) ||
6033             nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT,
6034                         cur_params.plink_timeout))
6035                 goto nla_put_failure;
6036         nla_nest_end(msg, pinfoattr);
6037         genlmsg_end(msg, hdr);
6038         return genlmsg_reply(msg, info);
6039
6040  nla_put_failure:
6041  out:
6042         nlmsg_free(msg);
6043         return -ENOBUFS;
6044 }
6045
6046 static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
6047         [NL80211_MESHCONF_RETRY_TIMEOUT] = { .type = NLA_U16 },
6048         [NL80211_MESHCONF_CONFIRM_TIMEOUT] = { .type = NLA_U16 },
6049         [NL80211_MESHCONF_HOLDING_TIMEOUT] = { .type = NLA_U16 },
6050         [NL80211_MESHCONF_MAX_PEER_LINKS] = { .type = NLA_U16 },
6051         [NL80211_MESHCONF_MAX_RETRIES] = { .type = NLA_U8 },
6052         [NL80211_MESHCONF_TTL] = { .type = NLA_U8 },
6053         [NL80211_MESHCONF_ELEMENT_TTL] = { .type = NLA_U8 },
6054         [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = { .type = NLA_U8 },
6055         [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] = { .type = NLA_U32 },
6056         [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
6057         [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
6058         [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = { .type = NLA_U16 },
6059         [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
6060         [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 },
6061         [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] = { .type = NLA_U16 },
6062         [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 },
6063         [NL80211_MESHCONF_HWMP_ROOTMODE] = { .type = NLA_U8 },
6064         [NL80211_MESHCONF_HWMP_RANN_INTERVAL] = { .type = NLA_U16 },
6065         [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = { .type = NLA_U8 },
6066         [NL80211_MESHCONF_FORWARDING] = { .type = NLA_U8 },
6067         [NL80211_MESHCONF_RSSI_THRESHOLD] = { .type = NLA_U32 },
6068         [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 },
6069         [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 },
6070         [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] = { .type = NLA_U16 },
6071         [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] = { .type = NLA_U16 },
6072         [NL80211_MESHCONF_POWER_MODE] = { .type = NLA_U32 },
6073         [NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 },
6074         [NL80211_MESHCONF_PLINK_TIMEOUT] = { .type = NLA_U32 },
6075 };
6076
6077 static const struct nla_policy
6078         nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
6079         [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 },
6080         [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
6081         [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
6082         [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
6083         [NL80211_MESH_SETUP_AUTH_PROTOCOL] = { .type = NLA_U8 },
6084         [NL80211_MESH_SETUP_USERSPACE_MPM] = { .type = NLA_FLAG },
6085         [NL80211_MESH_SETUP_IE] = { .type = NLA_BINARY,
6086                                     .len = IEEE80211_MAX_DATA_LEN },
6087         [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
6088 };
6089
6090 static int nl80211_check_bool(const struct nlattr *nla, u8 min, u8 max, bool *out)
6091 {
6092         u8 val = nla_get_u8(nla);
6093         if (val < min || val > max)
6094                 return -EINVAL;
6095         *out = val;
6096         return 0;
6097 }
6098
6099 static int nl80211_check_u8(const struct nlattr *nla, u8 min, u8 max, u8 *out)
6100 {
6101         u8 val = nla_get_u8(nla);
6102         if (val < min || val > max)
6103                 return -EINVAL;
6104         *out = val;
6105         return 0;
6106 }
6107
6108 static int nl80211_check_u16(const struct nlattr *nla, u16 min, u16 max, u16 *out)
6109 {
6110         u16 val = nla_get_u16(nla);
6111         if (val < min || val > max)
6112                 return -EINVAL;
6113         *out = val;
6114         return 0;
6115 }
6116
6117 static int nl80211_check_u32(const struct nlattr *nla, u32 min, u32 max, u32 *out)
6118 {
6119         u32 val = nla_get_u32(nla);
6120         if (val < min || val > max)
6121                 return -EINVAL;
6122         *out = val;
6123         return 0;
6124 }
6125
6126 static int nl80211_check_s32(const struct nlattr *nla, s32 min, s32 max, s32 *out)
6127 {
6128         s32 val = nla_get_s32(nla);
6129         if (val < min || val > max)
6130                 return -EINVAL;
6131         *out = val;
6132         return 0;
6133 }
6134
6135 static int nl80211_check_power_mode(const struct nlattr *nla,
6136                                     enum nl80211_mesh_power_mode min,
6137                                     enum nl80211_mesh_power_mode max,
6138                                     enum nl80211_mesh_power_mode *out)
6139 {
6140         u32 val = nla_get_u32(nla);
6141         if (val < min || val > max)
6142                 return -EINVAL;
6143         *out = val;
6144         return 0;
6145 }
6146
6147 static int nl80211_parse_mesh_config(struct genl_info *info,
6148                                      struct mesh_config *cfg,
6149                                      u32 *mask_out)
6150 {
6151         struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
6152         u32 mask = 0;
6153         u16 ht_opmode;
6154
6155 #define FILL_IN_MESH_PARAM_IF_SET(tb, cfg, param, min, max, mask, attr, fn) \
6156 do {                                                                        \
6157         if (tb[attr]) {                                                     \
6158                 if (fn(tb[attr], min, max, &cfg->param))                    \
6159                         return -EINVAL;                                     \
6160                 mask |= (1 << (attr - 1));                                  \
6161         }                                                                   \
6162 } while (0)
6163
6164         if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
6165                 return -EINVAL;
6166         if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX,
6167                              info->attrs[NL80211_ATTR_MESH_CONFIG],
6168                              nl80211_meshconf_params_policy, info->extack))
6169                 return -EINVAL;
6170
6171         /* This makes sure that there aren't more than 32 mesh config
6172          * parameters (otherwise our bitfield scheme would not work.) */
6173         BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
6174
6175         /* Fill in the params struct */
6176         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, 1, 255,
6177                                   mask, NL80211_MESHCONF_RETRY_TIMEOUT,
6178                                   nl80211_check_u16);
6179         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, 1, 255,
6180                                   mask, NL80211_MESHCONF_CONFIRM_TIMEOUT,
6181                                   nl80211_check_u16);
6182         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, 1, 255,
6183                                   mask, NL80211_MESHCONF_HOLDING_TIMEOUT,
6184                                   nl80211_check_u16);
6185         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, 0, 255,
6186                                   mask, NL80211_MESHCONF_MAX_PEER_LINKS,
6187                                   nl80211_check_u16);
6188         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, 0, 16,
6189                                   mask, NL80211_MESHCONF_MAX_RETRIES,
6190                                   nl80211_check_u8);
6191         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, 1, 255,
6192                                   mask, NL80211_MESHCONF_TTL, nl80211_check_u8);
6193         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl, 1, 255,
6194                                   mask, NL80211_MESHCONF_ELEMENT_TTL,
6195                                   nl80211_check_u8);
6196         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, 0, 1,
6197                                   mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
6198                                   nl80211_check_bool);
6199         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor,
6200                                   1, 255, mask,
6201                                   NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
6202                                   nl80211_check_u32);
6203         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, 0, 255,
6204                                   mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
6205                                   nl80211_check_u8);
6206         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, 1, 65535,
6207                                   mask, NL80211_MESHCONF_PATH_REFRESH_TIME,
6208                                   nl80211_check_u32);
6209         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, 1, 65535,
6210                                   mask, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
6211                                   nl80211_check_u16);
6212         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
6213                                   1, 65535, mask,
6214                                   NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
6215                                   nl80211_check_u32);
6216         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval,
6217                                   1, 65535, mask,
6218                                   NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
6219                                   nl80211_check_u16);
6220         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval,
6221                                   1, 65535, mask,
6222                                   NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
6223                                   nl80211_check_u16);
6224         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
6225                                   dot11MeshHWMPnetDiameterTraversalTime,
6226                                   1, 65535, mask,
6227                                   NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
6228                                   nl80211_check_u16);
6229         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, 0, 4,
6230                                   mask, NL80211_MESHCONF_HWMP_ROOTMODE,
6231                                   nl80211_check_u8);
6232         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, 1, 65535,
6233                                   mask, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
6234                                   nl80211_check_u16);
6235         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
6236                                   dot11MeshGateAnnouncementProtocol, 0, 1,
6237                                   mask, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
6238                                   nl80211_check_bool);
6239         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding, 0, 1,
6240                                   mask, NL80211_MESHCONF_FORWARDING,
6241                                   nl80211_check_bool);
6242         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold, -255, 0,
6243                                   mask, NL80211_MESHCONF_RSSI_THRESHOLD,
6244                                   nl80211_check_s32);
6245         /*
6246          * Check HT operation mode based on
6247          * IEEE 802.11 2012 8.4.2.59 HT Operation element.
6248          */
6249         if (tb[NL80211_MESHCONF_HT_OPMODE]) {
6250                 ht_opmode = nla_get_u16(tb[NL80211_MESHCONF_HT_OPMODE]);
6251
6252                 if (ht_opmode & ~(IEEE80211_HT_OP_MODE_PROTECTION |
6253                                   IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT |
6254                                   IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT))
6255                         return -EINVAL;
6256
6257                 if ((ht_opmode & IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT) &&
6258                     (ht_opmode & IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT))
6259                         return -EINVAL;
6260
6261                 switch (ht_opmode & IEEE80211_HT_OP_MODE_PROTECTION) {
6262                 case IEEE80211_HT_OP_MODE_PROTECTION_NONE:
6263                 case IEEE80211_HT_OP_MODE_PROTECTION_20MHZ:
6264                         if (ht_opmode & IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT)
6265                                 return -EINVAL;
6266                         break;
6267                 case IEEE80211_HT_OP_MODE_PROTECTION_NONMEMBER:
6268                 case IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED:
6269                         if (!(ht_opmode & IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT))
6270                                 return -EINVAL;
6271                         break;
6272                 }
6273                 cfg->ht_opmode = ht_opmode;
6274                 mask |= (1 << (NL80211_MESHCONF_HT_OPMODE - 1));
6275         }
6276         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathToRootTimeout,
6277                                   1, 65535, mask,
6278                                   NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
6279                                   nl80211_check_u32);
6280         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval, 1, 65535,
6281                                   mask, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
6282                                   nl80211_check_u16);
6283         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
6284                                   dot11MeshHWMPconfirmationInterval,
6285                                   1, 65535, mask,
6286                                   NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
6287                                   nl80211_check_u16);
6288         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, power_mode,
6289                                   NL80211_MESH_POWER_ACTIVE,
6290                                   NL80211_MESH_POWER_MAX,
6291                                   mask, NL80211_MESHCONF_POWER_MODE,
6292                                   nl80211_check_power_mode);
6293         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration,
6294                                   0, 65535, mask,
6295                                   NL80211_MESHCONF_AWAKE_WINDOW, nl80211_check_u16);
6296         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, plink_timeout, 0, 0xffffffff,
6297                                   mask, NL80211_MESHCONF_PLINK_TIMEOUT,
6298                                   nl80211_check_u32);
6299         if (mask_out)
6300                 *mask_out = mask;
6301
6302         return 0;
6303
6304 #undef FILL_IN_MESH_PARAM_IF_SET
6305 }
6306
6307 static int nl80211_parse_mesh_setup(struct genl_info *info,
6308                                      struct mesh_setup *setup)
6309 {
6310         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6311         struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
6312
6313         if (!info->attrs[NL80211_ATTR_MESH_SETUP])
6314                 return -EINVAL;
6315         if (nla_parse_nested(tb, NL80211_MESH_SETUP_ATTR_MAX,
6316                              info->attrs[NL80211_ATTR_MESH_SETUP],
6317                              nl80211_mesh_setup_params_policy, info->extack))
6318                 return -EINVAL;
6319
6320         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])
6321                 setup->sync_method =
6322                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ?
6323                  IEEE80211_SYNC_METHOD_VENDOR :
6324                  IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET;
6325
6326         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
6327                 setup->path_sel_proto =
6328                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
6329                  IEEE80211_PATH_PROTOCOL_VENDOR :
6330                  IEEE80211_PATH_PROTOCOL_HWMP;
6331
6332         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
6333                 setup->path_metric =
6334                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
6335                  IEEE80211_PATH_METRIC_VENDOR :
6336                  IEEE80211_PATH_METRIC_AIRTIME;
6337
6338         if (tb[NL80211_MESH_SETUP_IE]) {
6339                 struct nlattr *ieattr =
6340                         tb[NL80211_MESH_SETUP_IE];
6341                 if (!is_valid_ie_attr(ieattr))
6342                         return -EINVAL;
6343                 setup->ie = nla_data(ieattr);
6344                 setup->ie_len = nla_len(ieattr);
6345         }
6346         if (tb[NL80211_MESH_SETUP_USERSPACE_MPM] &&
6347             !(rdev->wiphy.features & NL80211_FEATURE_USERSPACE_MPM))
6348                 return -EINVAL;
6349         setup->user_mpm = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_MPM]);
6350         setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
6351         setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
6352         if (setup->is_secure)
6353                 setup->user_mpm = true;
6354
6355         if (tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]) {
6356                 if (!setup->user_mpm)
6357                         return -EINVAL;
6358                 setup->auth_id =
6359                         nla_get_u8(tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]);
6360         }
6361
6362         return 0;
6363 }
6364
6365 static int nl80211_update_mesh_config(struct sk_buff *skb,
6366                                       struct genl_info *info)
6367 {
6368         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6369         struct net_device *dev = info->user_ptr[1];
6370         struct wireless_dev *wdev = dev->ieee80211_ptr;
6371         struct mesh_config cfg;
6372         u32 mask;
6373         int err;
6374
6375         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
6376                 return -EOPNOTSUPP;
6377
6378         if (!rdev->ops->update_mesh_config)
6379                 return -EOPNOTSUPP;
6380
6381         err = nl80211_parse_mesh_config(info, &cfg, &mask);
6382         if (err)
6383                 return err;
6384
6385         wdev_lock(wdev);
6386         if (!wdev->mesh_id_len)
6387                 err = -ENOLINK;
6388
6389         if (!err)
6390                 err = rdev_update_mesh_config(rdev, dev, mask, &cfg);
6391
6392         wdev_unlock(wdev);
6393
6394         return err;
6395 }
6396
6397 static int nl80211_put_regdom(const struct ieee80211_regdomain *regdom,
6398                               struct sk_buff *msg)
6399 {
6400         struct nlattr *nl_reg_rules;
6401         unsigned int i;
6402
6403         if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, regdom->alpha2) ||
6404             (regdom->dfs_region &&
6405              nla_put_u8(msg, NL80211_ATTR_DFS_REGION, regdom->dfs_region)))
6406                 goto nla_put_failure;
6407
6408         nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES);
6409         if (!nl_reg_rules)
6410                 goto nla_put_failure;
6411
6412         for (i = 0; i < regdom->n_reg_rules; i++) {
6413                 struct nlattr *nl_reg_rule;
6414                 const struct ieee80211_reg_rule *reg_rule;
6415                 const struct ieee80211_freq_range *freq_range;
6416                 const struct ieee80211_power_rule *power_rule;
6417                 unsigned int max_bandwidth_khz;
6418
6419                 reg_rule = &regdom->reg_rules[i];
6420                 freq_range = &reg_rule->freq_range;
6421                 power_rule = &reg_rule->power_rule;
6422
6423                 nl_reg_rule = nla_nest_start(msg, i);
6424                 if (!nl_reg_rule)
6425                         goto nla_put_failure;
6426
6427                 max_bandwidth_khz = freq_range->max_bandwidth_khz;
6428                 if (!max_bandwidth_khz)
6429                         max_bandwidth_khz = reg_get_max_bandwidth(regdom,
6430                                                                   reg_rule);
6431
6432                 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS,
6433                                 reg_rule->flags) ||
6434                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START,
6435                                 freq_range->start_freq_khz) ||
6436                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END,
6437                                 freq_range->end_freq_khz) ||
6438                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
6439                                 max_bandwidth_khz) ||
6440                     nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
6441                                 power_rule->max_antenna_gain) ||
6442                     nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
6443                                 power_rule->max_eirp) ||
6444                     nla_put_u32(msg, NL80211_ATTR_DFS_CAC_TIME,
6445                                 reg_rule->dfs_cac_ms))
6446                         goto nla_put_failure;
6447
6448                 nla_nest_end(msg, nl_reg_rule);
6449         }
6450
6451         nla_nest_end(msg, nl_reg_rules);
6452         return 0;
6453
6454 nla_put_failure:
6455         return -EMSGSIZE;
6456 }
6457
6458 static int nl80211_get_reg_do(struct sk_buff *skb, struct genl_info *info)
6459 {
6460         const struct ieee80211_regdomain *regdom = NULL;
6461         struct cfg80211_registered_device *rdev;
6462         struct wiphy *wiphy = NULL;
6463         struct sk_buff *msg;
6464         void *hdr;
6465
6466         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6467         if (!msg)
6468                 return -ENOBUFS;
6469
6470         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
6471                              NL80211_CMD_GET_REG);
6472         if (!hdr)
6473                 goto put_failure;
6474
6475         if (info->attrs[NL80211_ATTR_WIPHY]) {
6476                 bool self_managed;
6477
6478                 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
6479                 if (IS_ERR(rdev)) {
6480                         nlmsg_free(msg);
6481                         return PTR_ERR(rdev);
6482                 }
6483
6484                 wiphy = &rdev->wiphy;
6485                 self_managed = wiphy->regulatory_flags &
6486                                REGULATORY_WIPHY_SELF_MANAGED;
6487                 regdom = get_wiphy_regdom(wiphy);
6488
6489                 /* a self-managed-reg device must have a private regdom */
6490                 if (WARN_ON(!regdom && self_managed)) {
6491                         nlmsg_free(msg);
6492                         return -EINVAL;
6493                 }
6494
6495                 if (regdom &&
6496                     nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
6497                         goto nla_put_failure;
6498         }
6499
6500         if (!wiphy && reg_last_request_cell_base() &&
6501             nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
6502                         NL80211_USER_REG_HINT_CELL_BASE))
6503                 goto nla_put_failure;
6504
6505         rcu_read_lock();
6506
6507         if (!regdom)
6508                 regdom = rcu_dereference(cfg80211_regdomain);
6509
6510         if (nl80211_put_regdom(regdom, msg))
6511                 goto nla_put_failure_rcu;
6512
6513         rcu_read_unlock();
6514
6515         genlmsg_end(msg, hdr);
6516         return genlmsg_reply(msg, info);
6517
6518 nla_put_failure_rcu:
6519         rcu_read_unlock();
6520 nla_put_failure:
6521 put_failure:
6522         nlmsg_free(msg);
6523         return -EMSGSIZE;
6524 }
6525
6526 static int nl80211_send_regdom(struct sk_buff *msg, struct netlink_callback *cb,
6527                                u32 seq, int flags, struct wiphy *wiphy,
6528                                const struct ieee80211_regdomain *regdom)
6529 {
6530         void *hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
6531                                    NL80211_CMD_GET_REG);
6532
6533         if (!hdr)
6534                 return -1;
6535
6536         genl_dump_check_consistent(cb, hdr);
6537
6538         if (nl80211_put_regdom(regdom, msg))
6539                 goto nla_put_failure;
6540
6541         if (!wiphy && reg_last_request_cell_base() &&
6542             nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
6543                         NL80211_USER_REG_HINT_CELL_BASE))
6544                 goto nla_put_failure;
6545
6546         if (wiphy &&
6547             nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
6548                 goto nla_put_failure;
6549
6550         if (wiphy && wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
6551             nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
6552                 goto nla_put_failure;
6553
6554         genlmsg_end(msg, hdr);
6555         return 0;
6556
6557 nla_put_failure:
6558         genlmsg_cancel(msg, hdr);
6559         return -EMSGSIZE;
6560 }
6561
6562 static int nl80211_get_reg_dump(struct sk_buff *skb,
6563                                 struct netlink_callback *cb)
6564 {
6565         const struct ieee80211_regdomain *regdom = NULL;
6566         struct cfg80211_registered_device *rdev;
6567         int err, reg_idx, start = cb->args[2];
6568
6569         rtnl_lock();
6570
6571         if (cfg80211_regdomain && start == 0) {
6572                 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
6573                                           NLM_F_MULTI, NULL,
6574                                           rtnl_dereference(cfg80211_regdomain));
6575                 if (err < 0)
6576                         goto out_err;
6577         }
6578
6579         /* the global regdom is idx 0 */
6580         reg_idx = 1;
6581         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
6582                 regdom = get_wiphy_regdom(&rdev->wiphy);
6583                 if (!regdom)
6584                         continue;
6585
6586                 if (++reg_idx <= start)
6587                         continue;
6588
6589                 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
6590                                           NLM_F_MULTI, &rdev->wiphy, regdom);
6591                 if (err < 0) {
6592                         reg_idx--;
6593                         break;
6594                 }
6595         }
6596
6597         cb->args[2] = reg_idx;
6598         err = skb->len;
6599 out_err:
6600         rtnl_unlock();
6601         return err;
6602 }
6603
6604 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
6605 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
6606         [NL80211_ATTR_REG_RULE_FLAGS]           = { .type = NLA_U32 },
6607         [NL80211_ATTR_FREQ_RANGE_START]         = { .type = NLA_U32 },
6608         [NL80211_ATTR_FREQ_RANGE_END]           = { .type = NLA_U32 },
6609         [NL80211_ATTR_FREQ_RANGE_MAX_BW]        = { .type = NLA_U32 },
6610         [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]  = { .type = NLA_U32 },
6611         [NL80211_ATTR_POWER_RULE_MAX_EIRP]      = { .type = NLA_U32 },
6612         [NL80211_ATTR_DFS_CAC_TIME]             = { .type = NLA_U32 },
6613 };
6614
6615 static int parse_reg_rule(struct nlattr *tb[],
6616         struct ieee80211_reg_rule *reg_rule)
6617 {
6618         struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
6619         struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
6620
6621         if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
6622                 return -EINVAL;
6623         if (!tb[NL80211_ATTR_FREQ_RANGE_START])
6624                 return -EINVAL;
6625         if (!tb[NL80211_ATTR_FREQ_RANGE_END])
6626                 return -EINVAL;
6627         if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
6628                 return -EINVAL;
6629         if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
6630                 return -EINVAL;
6631
6632         reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
6633
6634         freq_range->start_freq_khz =
6635                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
6636         freq_range->end_freq_khz =
6637                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
6638         freq_range->max_bandwidth_khz =
6639                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
6640
6641         power_rule->max_eirp =
6642                 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
6643
6644         if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
6645                 power_rule->max_antenna_gain =
6646                         nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
6647
6648         if (tb[NL80211_ATTR_DFS_CAC_TIME])
6649                 reg_rule->dfs_cac_ms =
6650                         nla_get_u32(tb[NL80211_ATTR_DFS_CAC_TIME]);
6651
6652         return 0;
6653 }
6654
6655 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
6656 {
6657         struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
6658         struct nlattr *nl_reg_rule;
6659         char *alpha2;
6660         int rem_reg_rules, r;
6661         u32 num_rules = 0, rule_idx = 0, size_of_regd;
6662         enum nl80211_dfs_regions dfs_region = NL80211_DFS_UNSET;
6663         struct ieee80211_regdomain *rd;
6664
6665         if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
6666                 return -EINVAL;
6667
6668         if (!info->attrs[NL80211_ATTR_REG_RULES])
6669                 return -EINVAL;
6670
6671         alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
6672
6673         if (info->attrs[NL80211_ATTR_DFS_REGION])
6674                 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]);
6675
6676         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
6677                             rem_reg_rules) {
6678                 num_rules++;
6679                 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
6680                         return -EINVAL;
6681         }
6682
6683         if (!reg_is_valid_request(alpha2))
6684                 return -EINVAL;
6685
6686         size_of_regd = sizeof(struct ieee80211_regdomain) +
6687                        num_rules * sizeof(struct ieee80211_reg_rule);
6688
6689         rd = kzalloc(size_of_regd, GFP_KERNEL);
6690         if (!rd)
6691                 return -ENOMEM;
6692
6693         rd->n_reg_rules = num_rules;
6694         rd->alpha2[0] = alpha2[0];
6695         rd->alpha2[1] = alpha2[1];
6696
6697         /*
6698          * Disable DFS master mode if the DFS region was
6699          * not supported or known on this kernel.
6700          */
6701         if (reg_supported_dfs_region(dfs_region))
6702                 rd->dfs_region = dfs_region;
6703
6704         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
6705                             rem_reg_rules) {
6706                 r = nla_parse_nested(tb, NL80211_REG_RULE_ATTR_MAX,
6707                                      nl_reg_rule, reg_rule_policy,
6708                                      info->extack);
6709                 if (r)
6710                         goto bad_reg;
6711                 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
6712                 if (r)
6713                         goto bad_reg;
6714
6715                 rule_idx++;
6716
6717                 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
6718                         r = -EINVAL;
6719                         goto bad_reg;
6720                 }
6721         }
6722
6723         /* set_regdom takes ownership of rd */
6724         return set_regdom(rd, REGD_SOURCE_CRDA);
6725  bad_reg:
6726         kfree(rd);
6727         return r;
6728 }
6729 #endif /* CONFIG_CFG80211_CRDA_SUPPORT */
6730
6731 static int validate_scan_freqs(struct nlattr *freqs)
6732 {
6733         struct nlattr *attr1, *attr2;
6734         int n_channels = 0, tmp1, tmp2;
6735
6736         nla_for_each_nested(attr1, freqs, tmp1)
6737                 if (nla_len(attr1) != sizeof(u32))
6738                         return 0;
6739
6740         nla_for_each_nested(attr1, freqs, tmp1) {
6741                 n_channels++;
6742                 /*
6743                  * Some hardware has a limited channel list for
6744                  * scanning, and it is pretty much nonsensical
6745                  * to scan for a channel twice, so disallow that
6746                  * and don't require drivers to check that the
6747                  * channel list they get isn't longer than what
6748                  * they can scan, as long as they can scan all
6749                  * the channels they registered at once.
6750                  */
6751                 nla_for_each_nested(attr2, freqs, tmp2)
6752                         if (attr1 != attr2 &&
6753                             nla_get_u32(attr1) == nla_get_u32(attr2))
6754                                 return 0;
6755         }
6756
6757         return n_channels;
6758 }
6759
6760 static bool is_band_valid(struct wiphy *wiphy, enum nl80211_band b)
6761 {
6762         return b < NUM_NL80211_BANDS && wiphy->bands[b];
6763 }
6764
6765 static int parse_bss_select(struct nlattr *nla, struct wiphy *wiphy,
6766                             struct cfg80211_bss_selection *bss_select)
6767 {
6768         struct nlattr *attr[NL80211_BSS_SELECT_ATTR_MAX + 1];
6769         struct nlattr *nest;
6770         int err;
6771         bool found = false;
6772         int i;
6773
6774         /* only process one nested attribute */
6775         nest = nla_data(nla);
6776         if (!nla_ok(nest, nla_len(nest)))
6777                 return -EINVAL;
6778
6779         err = nla_parse_nested(attr, NL80211_BSS_SELECT_ATTR_MAX, nest,
6780                                nl80211_bss_select_policy, NULL);
6781         if (err)
6782                 return err;
6783
6784         /* only one attribute may be given */
6785         for (i = 0; i <= NL80211_BSS_SELECT_ATTR_MAX; i++) {
6786                 if (attr[i]) {
6787                         if (found)
6788                                 return -EINVAL;
6789                         found = true;
6790                 }
6791         }
6792
6793         bss_select->behaviour = __NL80211_BSS_SELECT_ATTR_INVALID;
6794
6795         if (attr[NL80211_BSS_SELECT_ATTR_RSSI])
6796                 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI;
6797
6798         if (attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]) {
6799                 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_BAND_PREF;
6800                 bss_select->param.band_pref =
6801                         nla_get_u32(attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]);
6802                 if (!is_band_valid(wiphy, bss_select->param.band_pref))
6803                         return -EINVAL;
6804         }
6805
6806         if (attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]) {
6807                 struct nl80211_bss_select_rssi_adjust *adj_param;
6808
6809                 adj_param = nla_data(attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]);
6810                 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI_ADJUST;
6811                 bss_select->param.adjust.band = adj_param->band;
6812                 bss_select->param.adjust.delta = adj_param->delta;
6813                 if (!is_band_valid(wiphy, bss_select->param.adjust.band))
6814                         return -EINVAL;
6815         }
6816
6817         /* user-space did not provide behaviour attribute */
6818         if (bss_select->behaviour == __NL80211_BSS_SELECT_ATTR_INVALID)
6819                 return -EINVAL;
6820
6821         if (!(wiphy->bss_select_support & BIT(bss_select->behaviour)))
6822                 return -EINVAL;
6823
6824         return 0;
6825 }
6826
6827 static int nl80211_parse_random_mac(struct nlattr **attrs,
6828                                     u8 *mac_addr, u8 *mac_addr_mask)
6829 {
6830         int i;
6831
6832         if (!attrs[NL80211_ATTR_MAC] && !attrs[NL80211_ATTR_MAC_MASK]) {
6833                 eth_zero_addr(mac_addr);
6834                 eth_zero_addr(mac_addr_mask);
6835                 mac_addr[0] = 0x2;
6836                 mac_addr_mask[0] = 0x3;
6837
6838                 return 0;
6839         }
6840
6841         /* need both or none */
6842         if (!attrs[NL80211_ATTR_MAC] || !attrs[NL80211_ATTR_MAC_MASK])
6843                 return -EINVAL;
6844
6845         memcpy(mac_addr, nla_data(attrs[NL80211_ATTR_MAC]), ETH_ALEN);
6846         memcpy(mac_addr_mask, nla_data(attrs[NL80211_ATTR_MAC_MASK]), ETH_ALEN);
6847
6848         /* don't allow or configure an mcast address */
6849         if (!is_multicast_ether_addr(mac_addr_mask) ||
6850             is_multicast_ether_addr(mac_addr))
6851                 return -EINVAL;
6852
6853         /*
6854          * allow users to pass a MAC address that has bits set outside
6855          * of the mask, but don't bother drivers with having to deal
6856          * with such bits
6857          */
6858         for (i = 0; i < ETH_ALEN; i++)
6859                 mac_addr[i] &= mac_addr_mask[i];
6860
6861         return 0;
6862 }
6863
6864 static bool cfg80211_off_channel_oper_allowed(struct wireless_dev *wdev)
6865 {
6866         ASSERT_WDEV_LOCK(wdev);
6867
6868         if (!cfg80211_beaconing_iface_active(wdev))
6869                 return true;
6870
6871         if (!(wdev->chandef.chan->flags & IEEE80211_CHAN_RADAR))
6872                 return true;
6873
6874         return regulatory_pre_cac_allowed(wdev->wiphy);
6875 }
6876
6877 static int
6878 nl80211_check_scan_flags(struct wiphy *wiphy, struct wireless_dev *wdev,
6879                          void *request, struct nlattr **attrs,
6880                          bool is_sched_scan)
6881 {
6882         u8 *mac_addr, *mac_addr_mask;
6883         u32 *flags;
6884         enum nl80211_feature_flags randomness_flag;
6885
6886         if (!attrs[NL80211_ATTR_SCAN_FLAGS])
6887                 return 0;
6888
6889         if (is_sched_scan) {
6890                 struct cfg80211_sched_scan_request *req = request;
6891
6892                 randomness_flag = wdev ?
6893                                   NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR :
6894                                   NL80211_FEATURE_ND_RANDOM_MAC_ADDR;
6895                 flags = &req->flags;
6896                 mac_addr = req->mac_addr;
6897                 mac_addr_mask = req->mac_addr_mask;
6898         } else {
6899                 struct cfg80211_scan_request *req = request;
6900
6901                 randomness_flag = NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR;
6902                 flags = &req->flags;
6903                 mac_addr = req->mac_addr;
6904                 mac_addr_mask = req->mac_addr_mask;
6905         }
6906
6907         *flags = nla_get_u32(attrs[NL80211_ATTR_SCAN_FLAGS]);
6908
6909         if (((*flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
6910              !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) ||
6911             ((*flags & NL80211_SCAN_FLAG_LOW_SPAN) &&
6912              !wiphy_ext_feature_isset(wiphy,
6913                                       NL80211_EXT_FEATURE_LOW_SPAN_SCAN)) ||
6914             ((*flags & NL80211_SCAN_FLAG_LOW_POWER) &&
6915              !wiphy_ext_feature_isset(wiphy,
6916                                       NL80211_EXT_FEATURE_LOW_POWER_SCAN)) ||
6917             ((*flags & NL80211_SCAN_FLAG_HIGH_ACCURACY) &&
6918              !wiphy_ext_feature_isset(wiphy,
6919                                       NL80211_EXT_FEATURE_HIGH_ACCURACY_SCAN)))
6920                 return -EOPNOTSUPP;
6921
6922         if (*flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
6923                 int err;
6924
6925                 if (!(wiphy->features & randomness_flag) ||
6926                     (wdev && wdev->current_bss))
6927                         return -EOPNOTSUPP;
6928
6929                 err = nl80211_parse_random_mac(attrs, mac_addr, mac_addr_mask);
6930                 if (err)
6931                         return err;
6932         }
6933
6934         if ((*flags & NL80211_SCAN_FLAG_FILS_MAX_CHANNEL_TIME) &&
6935             !wiphy_ext_feature_isset(wiphy,
6936                                      NL80211_EXT_FEATURE_FILS_MAX_CHANNEL_TIME))
6937                 return -EOPNOTSUPP;
6938
6939         if ((*flags & NL80211_SCAN_FLAG_ACCEPT_BCAST_PROBE_RESP) &&
6940            !wiphy_ext_feature_isset(wiphy,
6941                                     NL80211_EXT_FEATURE_ACCEPT_BCAST_PROBE_RESP))
6942                 return -EOPNOTSUPP;
6943
6944         if ((*flags & NL80211_SCAN_FLAG_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION) &&
6945             !wiphy_ext_feature_isset(wiphy,
6946                                      NL80211_EXT_FEATURE_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION))
6947                 return -EOPNOTSUPP;
6948
6949         if ((*flags & NL80211_SCAN_FLAG_OCE_PROBE_REQ_HIGH_TX_RATE) &&
6950             !wiphy_ext_feature_isset(wiphy,
6951                                      NL80211_EXT_FEATURE_OCE_PROBE_REQ_HIGH_TX_RATE))
6952                 return -EOPNOTSUPP;
6953
6954         return 0;
6955 }
6956
6957 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
6958 {
6959         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6960         struct wireless_dev *wdev = info->user_ptr[1];
6961         struct cfg80211_scan_request *request;
6962         struct nlattr *attr;
6963         struct wiphy *wiphy;
6964         int err, tmp, n_ssids = 0, n_channels, i;
6965         size_t ie_len;
6966
6967         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6968                 return -EINVAL;
6969
6970         wiphy = &rdev->wiphy;
6971
6972         if (wdev->iftype == NL80211_IFTYPE_NAN)
6973                 return -EOPNOTSUPP;
6974
6975         if (!rdev->ops->scan)
6976                 return -EOPNOTSUPP;
6977
6978         if (rdev->scan_req || rdev->scan_msg) {
6979                 err = -EBUSY;
6980                 goto unlock;
6981         }
6982
6983         if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
6984                 n_channels = validate_scan_freqs(
6985                                 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
6986                 if (!n_channels) {
6987                         err = -EINVAL;
6988                         goto unlock;
6989                 }
6990         } else {
6991                 n_channels = ieee80211_get_num_supported_channels(wiphy);
6992         }
6993
6994         if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
6995                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
6996                         n_ssids++;
6997
6998         if (n_ssids > wiphy->max_scan_ssids) {
6999                 err = -EINVAL;
7000                 goto unlock;
7001         }
7002
7003         if (info->attrs[NL80211_ATTR_IE])
7004                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7005         else
7006                 ie_len = 0;
7007
7008         if (ie_len > wiphy->max_scan_ie_len) {
7009                 err = -EINVAL;
7010                 goto unlock;
7011         }
7012
7013         request = kzalloc(sizeof(*request)
7014                         + sizeof(*request->ssids) * n_ssids
7015                         + sizeof(*request->channels) * n_channels
7016                         + ie_len, GFP_KERNEL);
7017         if (!request) {
7018                 err = -ENOMEM;
7019                 goto unlock;
7020         }
7021
7022         if (n_ssids)
7023                 request->ssids = (void *)&request->channels[n_channels];
7024         request->n_ssids = n_ssids;
7025         if (ie_len) {
7026                 if (n_ssids)
7027                         request->ie = (void *)(request->ssids + n_ssids);
7028                 else
7029                         request->ie = (void *)(request->channels + n_channels);
7030         }
7031
7032         i = 0;
7033         if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
7034                 /* user specified, bail out if channel not found */
7035                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) {
7036                         struct ieee80211_channel *chan;
7037
7038                         chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
7039
7040                         if (!chan) {
7041                                 err = -EINVAL;
7042                                 goto out_free;
7043                         }
7044
7045                         /* ignore disabled channels */
7046                         if (chan->flags & IEEE80211_CHAN_DISABLED)
7047                                 continue;
7048
7049                         request->channels[i] = chan;
7050                         i++;
7051                 }
7052         } else {
7053                 enum nl80211_band band;
7054
7055                 /* all channels */
7056                 for (band = 0; band < NUM_NL80211_BANDS; band++) {
7057                         int j;
7058
7059                         if (!wiphy->bands[band])
7060                                 continue;
7061                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
7062                                 struct ieee80211_channel *chan;
7063
7064                                 chan = &wiphy->bands[band]->channels[j];
7065
7066                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
7067                                         continue;
7068
7069                                 request->channels[i] = chan;
7070                                 i++;
7071                         }
7072                 }
7073         }
7074
7075         if (!i) {
7076                 err = -EINVAL;
7077                 goto out_free;
7078         }
7079
7080         request->n_channels = i;
7081
7082         wdev_lock(wdev);
7083         if (!cfg80211_off_channel_oper_allowed(wdev)) {
7084                 struct ieee80211_channel *chan;
7085
7086                 if (request->n_channels != 1) {
7087                         wdev_unlock(wdev);
7088                         err = -EBUSY;
7089                         goto out_free;
7090                 }
7091
7092                 chan = request->channels[0];
7093                 if (chan->center_freq != wdev->chandef.chan->center_freq) {
7094                         wdev_unlock(wdev);
7095                         err = -EBUSY;
7096                         goto out_free;
7097                 }
7098         }
7099         wdev_unlock(wdev);
7100
7101         i = 0;
7102         if (n_ssids) {
7103                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
7104                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
7105                                 err = -EINVAL;
7106                                 goto out_free;
7107                         }
7108                         request->ssids[i].ssid_len = nla_len(attr);
7109                         memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
7110                         i++;
7111                 }
7112         }
7113
7114         if (info->attrs[NL80211_ATTR_IE]) {
7115                 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7116                 memcpy((void *)request->ie,
7117                        nla_data(info->attrs[NL80211_ATTR_IE]),
7118                        request->ie_len);
7119         }
7120
7121         for (i = 0; i < NUM_NL80211_BANDS; i++)
7122                 if (wiphy->bands[i])
7123                         request->rates[i] =
7124                                 (1 << wiphy->bands[i]->n_bitrates) - 1;
7125
7126         if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
7127                 nla_for_each_nested(attr,
7128                                     info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
7129                                     tmp) {
7130                         enum nl80211_band band = nla_type(attr);
7131
7132                         if (band < 0 || band >= NUM_NL80211_BANDS) {
7133                                 err = -EINVAL;
7134                                 goto out_free;
7135                         }
7136
7137                         if (!wiphy->bands[band])
7138                                 continue;
7139
7140                         err = ieee80211_get_ratemask(wiphy->bands[band],
7141                                                      nla_data(attr),
7142                                                      nla_len(attr),
7143                                                      &request->rates[band]);
7144                         if (err)
7145                                 goto out_free;
7146                 }
7147         }
7148
7149         if (info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]) {
7150                 if (!wiphy_ext_feature_isset(wiphy,
7151                                         NL80211_EXT_FEATURE_SET_SCAN_DWELL)) {
7152                         err = -EOPNOTSUPP;
7153                         goto out_free;
7154                 }
7155
7156                 request->duration =
7157                         nla_get_u16(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]);
7158                 request->duration_mandatory =
7159                         nla_get_flag(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION_MANDATORY]);
7160         }
7161
7162         err = nl80211_check_scan_flags(wiphy, wdev, request, info->attrs,
7163                                        false);
7164         if (err)
7165                 goto out_free;
7166
7167         request->no_cck =
7168                 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
7169
7170         /* Initial implementation used NL80211_ATTR_MAC to set the specific
7171          * BSSID to scan for. This was problematic because that same attribute
7172          * was already used for another purpose (local random MAC address). The
7173          * NL80211_ATTR_BSSID attribute was added to fix this. For backwards
7174          * compatibility with older userspace components, also use the
7175          * NL80211_ATTR_MAC value here if it can be determined to be used for
7176          * the specific BSSID use case instead of the random MAC address
7177          * (NL80211_ATTR_SCAN_FLAGS is used to enable random MAC address use).
7178          */
7179         if (info->attrs[NL80211_ATTR_BSSID])
7180                 memcpy(request->bssid,
7181                        nla_data(info->attrs[NL80211_ATTR_BSSID]), ETH_ALEN);
7182         else if (!(request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) &&
7183                  info->attrs[NL80211_ATTR_MAC])
7184                 memcpy(request->bssid, nla_data(info->attrs[NL80211_ATTR_MAC]),
7185                        ETH_ALEN);
7186         else
7187                 eth_broadcast_addr(request->bssid);
7188
7189         request->wdev = wdev;
7190         request->wiphy = &rdev->wiphy;
7191         request->scan_start = jiffies;
7192
7193         rdev->scan_req = request;
7194         err = rdev_scan(rdev, request);
7195
7196         if (!err) {
7197                 nl80211_send_scan_start(rdev, wdev);
7198                 if (wdev->netdev)
7199                         dev_hold(wdev->netdev);
7200         } else {
7201  out_free:
7202                 rdev->scan_req = NULL;
7203                 kfree(request);
7204         }
7205
7206  unlock:
7207         return err;
7208 }
7209
7210 static int nl80211_abort_scan(struct sk_buff *skb, struct genl_info *info)
7211 {
7212         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7213         struct wireless_dev *wdev = info->user_ptr[1];
7214
7215         if (!rdev->ops->abort_scan)
7216                 return -EOPNOTSUPP;
7217
7218         if (rdev->scan_msg)
7219                 return 0;
7220
7221         if (!rdev->scan_req)
7222                 return -ENOENT;
7223
7224         rdev_abort_scan(rdev, wdev);
7225         return 0;
7226 }
7227
7228 static int
7229 nl80211_parse_sched_scan_plans(struct wiphy *wiphy, int n_plans,
7230                                struct cfg80211_sched_scan_request *request,
7231                                struct nlattr **attrs)
7232 {
7233         int tmp, err, i = 0;
7234         struct nlattr *attr;
7235
7236         if (!attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
7237                 u32 interval;
7238
7239                 /*
7240                  * If scan plans are not specified,
7241                  * %NL80211_ATTR_SCHED_SCAN_INTERVAL will be specified. In this
7242                  * case one scan plan will be set with the specified scan
7243                  * interval and infinite number of iterations.
7244                  */
7245                 interval = nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
7246                 if (!interval)
7247                         return -EINVAL;
7248
7249                 request->scan_plans[0].interval =
7250                         DIV_ROUND_UP(interval, MSEC_PER_SEC);
7251                 if (!request->scan_plans[0].interval)
7252                         return -EINVAL;
7253
7254                 if (request->scan_plans[0].interval >
7255                     wiphy->max_sched_scan_plan_interval)
7256                         request->scan_plans[0].interval =
7257                                 wiphy->max_sched_scan_plan_interval;
7258
7259                 return 0;
7260         }
7261
7262         nla_for_each_nested(attr, attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp) {
7263                 struct nlattr *plan[NL80211_SCHED_SCAN_PLAN_MAX + 1];
7264
7265                 if (WARN_ON(i >= n_plans))
7266                         return -EINVAL;
7267
7268                 err = nla_parse_nested(plan, NL80211_SCHED_SCAN_PLAN_MAX,
7269                                        attr, nl80211_plan_policy, NULL);
7270                 if (err)
7271                         return err;
7272
7273                 if (!plan[NL80211_SCHED_SCAN_PLAN_INTERVAL])
7274                         return -EINVAL;
7275
7276                 request->scan_plans[i].interval =
7277                         nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_INTERVAL]);
7278                 if (!request->scan_plans[i].interval ||
7279                     request->scan_plans[i].interval >
7280                     wiphy->max_sched_scan_plan_interval)
7281                         return -EINVAL;
7282
7283                 if (plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]) {
7284                         request->scan_plans[i].iterations =
7285                                 nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]);
7286                         if (!request->scan_plans[i].iterations ||
7287                             (request->scan_plans[i].iterations >
7288                              wiphy->max_sched_scan_plan_iterations))
7289                                 return -EINVAL;
7290                 } else if (i < n_plans - 1) {
7291                         /*
7292                          * All scan plans but the last one must specify
7293                          * a finite number of iterations
7294                          */
7295                         return -EINVAL;
7296                 }
7297
7298                 i++;
7299         }
7300
7301         /*
7302          * The last scan plan must not specify the number of
7303          * iterations, it is supposed to run infinitely
7304          */
7305         if (request->scan_plans[n_plans - 1].iterations)
7306                 return  -EINVAL;
7307
7308         return 0;
7309 }
7310
7311 static struct cfg80211_sched_scan_request *
7312 nl80211_parse_sched_scan(struct wiphy *wiphy, struct wireless_dev *wdev,
7313                          struct nlattr **attrs, int max_match_sets)
7314 {
7315         struct cfg80211_sched_scan_request *request;
7316         struct nlattr *attr;
7317         int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i, n_plans = 0;
7318         enum nl80211_band band;
7319         size_t ie_len;
7320         struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
7321         s32 default_match_rssi = NL80211_SCAN_RSSI_THOLD_OFF;
7322
7323         if (!is_valid_ie_attr(attrs[NL80211_ATTR_IE]))
7324                 return ERR_PTR(-EINVAL);
7325
7326         if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
7327                 n_channels = validate_scan_freqs(
7328                                 attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
7329                 if (!n_channels)
7330                         return ERR_PTR(-EINVAL);
7331         } else {
7332                 n_channels = ieee80211_get_num_supported_channels(wiphy);
7333         }
7334
7335         if (attrs[NL80211_ATTR_SCAN_SSIDS])
7336                 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
7337                                     tmp)
7338                         n_ssids++;
7339
7340         if (n_ssids > wiphy->max_sched_scan_ssids)
7341                 return ERR_PTR(-EINVAL);
7342
7343         /*
7344          * First, count the number of 'real' matchsets. Due to an issue with
7345          * the old implementation, matchsets containing only the RSSI attribute
7346          * (NL80211_SCHED_SCAN_MATCH_ATTR_RSSI) are considered as the 'default'
7347          * RSSI for all matchsets, rather than their own matchset for reporting
7348          * all APs with a strong RSSI. This is needed to be compatible with
7349          * older userspace that treated a matchset with only the RSSI as the
7350          * global RSSI for all other matchsets - if there are other matchsets.
7351          */
7352         if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
7353                 nla_for_each_nested(attr,
7354                                     attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
7355                                     tmp) {
7356                         struct nlattr *rssi;
7357
7358                         err = nla_parse_nested(tb,
7359                                                NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
7360                                                attr, nl80211_match_policy,
7361                                                NULL);
7362                         if (err)
7363                                 return ERR_PTR(err);
7364
7365                         /* SSID and BSSID are mutually exclusive */
7366                         if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID] &&
7367                             tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID])
7368                                 return ERR_PTR(-EINVAL);
7369
7370                         /* add other standalone attributes here */
7371                         if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID] ||
7372                             tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID]) {
7373                                 n_match_sets++;
7374                                 continue;
7375                         }
7376                         rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
7377                         if (rssi)
7378                                 default_match_rssi = nla_get_s32(rssi);
7379                 }
7380         }
7381
7382         /* However, if there's no other matchset, add the RSSI one */
7383         if (!n_match_sets && default_match_rssi != NL80211_SCAN_RSSI_THOLD_OFF)
7384                 n_match_sets = 1;
7385
7386         if (n_match_sets > max_match_sets)
7387                 return ERR_PTR(-EINVAL);
7388
7389         if (attrs[NL80211_ATTR_IE])
7390                 ie_len = nla_len(attrs[NL80211_ATTR_IE]);
7391         else
7392                 ie_len = 0;
7393
7394         if (ie_len > wiphy->max_sched_scan_ie_len)
7395                 return ERR_PTR(-EINVAL);
7396
7397         if (attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
7398                 /*
7399                  * NL80211_ATTR_SCHED_SCAN_INTERVAL must not be specified since
7400                  * each scan plan already specifies its own interval
7401                  */
7402                 if (attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
7403                         return ERR_PTR(-EINVAL);
7404
7405                 nla_for_each_nested(attr,
7406                                     attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp)
7407                         n_plans++;
7408         } else {
7409                 /*
7410                  * The scan interval attribute is kept for backward
7411                  * compatibility. If no scan plans are specified and sched scan
7412                  * interval is specified, one scan plan will be set with this
7413                  * scan interval and infinite number of iterations.
7414                  */
7415                 if (!attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
7416                         return ERR_PTR(-EINVAL);
7417
7418                 n_plans = 1;
7419         }
7420
7421         if (!n_plans || n_plans > wiphy->max_sched_scan_plans)
7422                 return ERR_PTR(-EINVAL);
7423
7424         if (!wiphy_ext_feature_isset(
7425                     wiphy, NL80211_EXT_FEATURE_SCHED_SCAN_RELATIVE_RSSI) &&
7426             (attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI] ||
7427              attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]))
7428                 return ERR_PTR(-EINVAL);
7429
7430         request = kzalloc(sizeof(*request)
7431                         + sizeof(*request->ssids) * n_ssids
7432                         + sizeof(*request->match_sets) * n_match_sets
7433                         + sizeof(*request->scan_plans) * n_plans
7434                         + sizeof(*request->channels) * n_channels
7435                         + ie_len, GFP_KERNEL);
7436         if (!request)
7437                 return ERR_PTR(-ENOMEM);
7438
7439         if (n_ssids)
7440                 request->ssids = (void *)&request->channels[n_channels];
7441         request->n_ssids = n_ssids;
7442         if (ie_len) {
7443                 if (n_ssids)
7444                         request->ie = (void *)(request->ssids + n_ssids);
7445                 else
7446                         request->ie = (void *)(request->channels + n_channels);
7447         }
7448
7449         if (n_match_sets) {
7450                 if (request->ie)
7451                         request->match_sets = (void *)(request->ie + ie_len);
7452                 else if (n_ssids)
7453                         request->match_sets =
7454                                 (void *)(request->ssids + n_ssids);
7455                 else
7456                         request->match_sets =
7457                                 (void *)(request->channels + n_channels);
7458         }
7459         request->n_match_sets = n_match_sets;
7460
7461         if (n_match_sets)
7462                 request->scan_plans = (void *)(request->match_sets +
7463                                                n_match_sets);
7464         else if (request->ie)
7465                 request->scan_plans = (void *)(request->ie + ie_len);
7466         else if (n_ssids)
7467                 request->scan_plans = (void *)(request->ssids + n_ssids);
7468         else
7469                 request->scan_plans = (void *)(request->channels + n_channels);
7470
7471         request->n_scan_plans = n_plans;
7472
7473         i = 0;
7474         if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
7475                 /* user specified, bail out if channel not found */
7476                 nla_for_each_nested(attr,
7477                                     attrs[NL80211_ATTR_SCAN_FREQUENCIES],
7478                                     tmp) {
7479                         struct ieee80211_channel *chan;
7480
7481                         chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
7482
7483                         if (!chan) {
7484                                 err = -EINVAL;
7485                                 goto out_free;
7486                         }
7487
7488                         /* ignore disabled channels */
7489                         if (chan->flags & IEEE80211_CHAN_DISABLED)
7490                                 continue;
7491
7492                         request->channels[i] = chan;
7493                         i++;
7494                 }
7495         } else {
7496                 /* all channels */
7497                 for (band = 0; band < NUM_NL80211_BANDS; band++) {
7498                         int j;
7499
7500                         if (!wiphy->bands[band])
7501                                 continue;
7502                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
7503                                 struct ieee80211_channel *chan;
7504
7505                                 chan = &wiphy->bands[band]->channels[j];
7506
7507                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
7508                                         continue;
7509
7510                                 request->channels[i] = chan;
7511                                 i++;
7512                         }
7513                 }
7514         }
7515
7516         if (!i) {
7517                 err = -EINVAL;
7518                 goto out_free;
7519         }
7520
7521         request->n_channels = i;
7522
7523         i = 0;
7524         if (n_ssids) {
7525                 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
7526                                     tmp) {
7527                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
7528                                 err = -EINVAL;
7529                                 goto out_free;
7530                         }
7531                         request->ssids[i].ssid_len = nla_len(attr);
7532                         memcpy(request->ssids[i].ssid, nla_data(attr),
7533                                nla_len(attr));
7534                         i++;
7535                 }
7536         }
7537
7538         i = 0;
7539         if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
7540                 nla_for_each_nested(attr,
7541                                     attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
7542                                     tmp) {
7543                         struct nlattr *ssid, *bssid, *rssi;
7544
7545                         err = nla_parse_nested(tb,
7546                                                NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
7547                                                attr, nl80211_match_policy,
7548                                                NULL);
7549                         if (err)
7550                                 goto out_free;
7551                         ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID];
7552                         bssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID];
7553                         if (ssid || bssid) {
7554                                 if (WARN_ON(i >= n_match_sets)) {
7555                                         /* this indicates a programming error,
7556                                          * the loop above should have verified
7557                                          * things properly
7558                                          */
7559                                         err = -EINVAL;
7560                                         goto out_free;
7561                                 }
7562
7563                                 if (ssid) {
7564                                         if (nla_len(ssid) > IEEE80211_MAX_SSID_LEN) {
7565                                                 err = -EINVAL;
7566                                                 goto out_free;
7567                                         }
7568                                         memcpy(request->match_sets[i].ssid.ssid,
7569                                                nla_data(ssid), nla_len(ssid));
7570                                         request->match_sets[i].ssid.ssid_len =
7571                                                 nla_len(ssid);
7572                                 }
7573                                 if (bssid) {
7574                                         if (nla_len(bssid) != ETH_ALEN) {
7575                                                 err = -EINVAL;
7576                                                 goto out_free;
7577                                         }
7578                                         memcpy(request->match_sets[i].bssid,
7579                                                nla_data(bssid), ETH_ALEN);
7580                                 }
7581
7582                                 /* special attribute - old implementation w/a */
7583                                 request->match_sets[i].rssi_thold =
7584                                         default_match_rssi;
7585                                 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
7586                                 if (rssi)
7587                                         request->match_sets[i].rssi_thold =
7588                                                 nla_get_s32(rssi);
7589                         }
7590                         i++;
7591                 }
7592
7593                 /* there was no other matchset, so the RSSI one is alone */
7594                 if (i == 0 && n_match_sets)
7595                         request->match_sets[0].rssi_thold = default_match_rssi;
7596
7597                 request->min_rssi_thold = INT_MAX;
7598                 for (i = 0; i < n_match_sets; i++)
7599                         request->min_rssi_thold =
7600                                 min(request->match_sets[i].rssi_thold,
7601                                     request->min_rssi_thold);
7602         } else {
7603                 request->min_rssi_thold = NL80211_SCAN_RSSI_THOLD_OFF;
7604         }
7605
7606         if (ie_len) {
7607                 request->ie_len = ie_len;
7608                 memcpy((void *)request->ie,
7609                        nla_data(attrs[NL80211_ATTR_IE]),
7610                        request->ie_len);
7611         }
7612
7613         err = nl80211_check_scan_flags(wiphy, wdev, request, attrs, true);
7614         if (err)
7615                 goto out_free;
7616
7617         if (attrs[NL80211_ATTR_SCHED_SCAN_DELAY])
7618                 request->delay =
7619                         nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_DELAY]);
7620
7621         if (attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI]) {
7622                 request->relative_rssi = nla_get_s8(
7623                         attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI]);
7624                 request->relative_rssi_set = true;
7625         }
7626
7627         if (request->relative_rssi_set &&
7628             attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]) {
7629                 struct nl80211_bss_select_rssi_adjust *rssi_adjust;
7630
7631                 rssi_adjust = nla_data(
7632                         attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]);
7633                 request->rssi_adjust.band = rssi_adjust->band;
7634                 request->rssi_adjust.delta = rssi_adjust->delta;
7635                 if (!is_band_valid(wiphy, request->rssi_adjust.band)) {
7636                         err = -EINVAL;
7637                         goto out_free;
7638                 }
7639         }
7640
7641         err = nl80211_parse_sched_scan_plans(wiphy, n_plans, request, attrs);
7642         if (err)
7643                 goto out_free;
7644
7645         request->scan_start = jiffies;
7646
7647         return request;
7648
7649 out_free:
7650         kfree(request);
7651         return ERR_PTR(err);
7652 }
7653
7654 static int nl80211_start_sched_scan(struct sk_buff *skb,
7655                                     struct genl_info *info)
7656 {
7657         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7658         struct net_device *dev = info->user_ptr[1];
7659         struct wireless_dev *wdev = dev->ieee80211_ptr;
7660         struct cfg80211_sched_scan_request *sched_scan_req;
7661         bool want_multi;
7662         int err;
7663
7664         if (!rdev->wiphy.max_sched_scan_reqs || !rdev->ops->sched_scan_start)
7665                 return -EOPNOTSUPP;
7666
7667         want_multi = info->attrs[NL80211_ATTR_SCHED_SCAN_MULTI];
7668         err = cfg80211_sched_scan_req_possible(rdev, want_multi);
7669         if (err)
7670                 return err;
7671
7672         sched_scan_req = nl80211_parse_sched_scan(&rdev->wiphy, wdev,
7673                                                   info->attrs,
7674                                                   rdev->wiphy.max_match_sets);
7675
7676         err = PTR_ERR_OR_ZERO(sched_scan_req);
7677         if (err)
7678                 goto out_err;
7679
7680         /* leave request id zero for legacy request
7681          * or if driver does not support multi-scheduled scan
7682          */
7683         if (want_multi && rdev->wiphy.max_sched_scan_reqs > 1) {
7684                 while (!sched_scan_req->reqid)
7685                         sched_scan_req->reqid = rdev->wiphy.cookie_counter++;
7686         }
7687
7688         err = rdev_sched_scan_start(rdev, dev, sched_scan_req);
7689         if (err)
7690                 goto out_free;
7691
7692         sched_scan_req->dev = dev;
7693         sched_scan_req->wiphy = &rdev->wiphy;
7694
7695         if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
7696                 sched_scan_req->owner_nlportid = info->snd_portid;
7697
7698         cfg80211_add_sched_scan_req(rdev, sched_scan_req);
7699
7700         nl80211_send_sched_scan(sched_scan_req, NL80211_CMD_START_SCHED_SCAN);
7701         return 0;
7702
7703 out_free:
7704         kfree(sched_scan_req);
7705 out_err:
7706         return err;
7707 }
7708
7709 static int nl80211_stop_sched_scan(struct sk_buff *skb,
7710                                    struct genl_info *info)
7711 {
7712         struct cfg80211_sched_scan_request *req;
7713         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7714         u64 cookie;
7715
7716         if (!rdev->wiphy.max_sched_scan_reqs || !rdev->ops->sched_scan_stop)
7717                 return -EOPNOTSUPP;
7718
7719         if (info->attrs[NL80211_ATTR_COOKIE]) {
7720                 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
7721                 return __cfg80211_stop_sched_scan(rdev, cookie, false);
7722         }
7723
7724         req = list_first_or_null_rcu(&rdev->sched_scan_req_list,
7725                                      struct cfg80211_sched_scan_request,
7726                                      list);
7727         if (!req || req->reqid ||
7728             (req->owner_nlportid &&
7729              req->owner_nlportid != info->snd_portid))
7730                 return -ENOENT;
7731
7732         return cfg80211_stop_sched_scan_req(rdev, req, false);
7733 }
7734
7735 static int nl80211_start_radar_detection(struct sk_buff *skb,
7736                                          struct genl_info *info)
7737 {
7738         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7739         struct net_device *dev = info->user_ptr[1];
7740         struct wireless_dev *wdev = dev->ieee80211_ptr;
7741         struct wiphy *wiphy = wdev->wiphy;
7742         struct cfg80211_chan_def chandef;
7743         enum nl80211_dfs_regions dfs_region;
7744         unsigned int cac_time_ms;
7745         int err;
7746
7747         dfs_region = reg_get_dfs_region(wiphy);
7748         if (dfs_region == NL80211_DFS_UNSET)
7749                 return -EINVAL;
7750
7751         err = nl80211_parse_chandef(rdev, info, &chandef);
7752         if (err)
7753                 return err;
7754
7755         if (netif_carrier_ok(dev))
7756                 return -EBUSY;
7757
7758         if (wdev->cac_started)
7759                 return -EBUSY;
7760
7761         err = cfg80211_chandef_dfs_required(wiphy, &chandef, wdev->iftype);
7762         if (err < 0)
7763                 return err;
7764
7765         if (err == 0)
7766                 return -EINVAL;
7767
7768         if (!cfg80211_chandef_dfs_usable(wiphy, &chandef))
7769                 return -EINVAL;
7770
7771         /* CAC start is offloaded to HW and can't be started manually */
7772         if (wiphy_ext_feature_isset(wiphy, NL80211_EXT_FEATURE_DFS_OFFLOAD))
7773                 return -EOPNOTSUPP;
7774
7775         if (!rdev->ops->start_radar_detection)
7776                 return -EOPNOTSUPP;
7777
7778         cac_time_ms = cfg80211_chandef_dfs_cac_time(&rdev->wiphy, &chandef);
7779         if (WARN_ON(!cac_time_ms))
7780                 cac_time_ms = IEEE80211_DFS_MIN_CAC_TIME_MS;
7781
7782         err = rdev_start_radar_detection(rdev, dev, &chandef, cac_time_ms);
7783         if (!err) {
7784                 wdev->chandef = chandef;
7785                 wdev->cac_started = true;
7786                 wdev->cac_start_time = jiffies;
7787                 wdev->cac_time_ms = cac_time_ms;
7788         }
7789         return err;
7790 }
7791
7792 static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info)
7793 {
7794         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7795         struct net_device *dev = info->user_ptr[1];
7796         struct wireless_dev *wdev = dev->ieee80211_ptr;
7797         struct cfg80211_csa_settings params;
7798         /* csa_attrs is defined static to avoid waste of stack size - this
7799          * function is called under RTNL lock, so this should not be a problem.
7800          */
7801         static struct nlattr *csa_attrs[NL80211_ATTR_MAX+1];
7802         int err;
7803         bool need_new_beacon = false;
7804         bool need_handle_dfs_flag = true;
7805         int len, i;
7806         u32 cs_count;
7807
7808         if (!rdev->ops->channel_switch ||
7809             !(rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH))
7810                 return -EOPNOTSUPP;
7811
7812         switch (dev->ieee80211_ptr->iftype) {
7813         case NL80211_IFTYPE_AP:
7814         case NL80211_IFTYPE_P2P_GO:
7815                 need_new_beacon = true;
7816                 /* For all modes except AP the handle_dfs flag needs to be
7817                  * supplied to tell the kernel that userspace will handle radar
7818                  * events when they happen. Otherwise a switch to a channel
7819                  * requiring DFS will be rejected.
7820                  */
7821                 need_handle_dfs_flag = false;
7822
7823                 /* useless if AP is not running */
7824                 if (!wdev->beacon_interval)
7825                         return -ENOTCONN;
7826                 break;
7827         case NL80211_IFTYPE_ADHOC:
7828                 if (!wdev->ssid_len)
7829                         return -ENOTCONN;
7830                 break;
7831         case NL80211_IFTYPE_MESH_POINT:
7832                 if (!wdev->mesh_id_len)
7833                         return -ENOTCONN;
7834                 break;
7835         default:
7836                 return -EOPNOTSUPP;
7837         }
7838
7839         memset(&params, 0, sizeof(params));
7840
7841         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
7842             !info->attrs[NL80211_ATTR_CH_SWITCH_COUNT])
7843                 return -EINVAL;
7844
7845         /* only important for AP, IBSS and mesh create IEs internally */
7846         if (need_new_beacon && !info->attrs[NL80211_ATTR_CSA_IES])
7847                 return -EINVAL;
7848
7849         /* Even though the attribute is u32, the specification says
7850          * u8, so let's make sure we don't overflow.
7851          */
7852         cs_count = nla_get_u32(info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]);
7853         if (cs_count > 255)
7854                 return -EINVAL;
7855
7856         params.count = cs_count;
7857
7858         if (!need_new_beacon)
7859                 goto skip_beacons;
7860
7861         err = nl80211_parse_beacon(info->attrs, &params.beacon_after);
7862         if (err)
7863                 return err;
7864
7865         err = nla_parse_nested(csa_attrs, NL80211_ATTR_MAX,
7866                                info->attrs[NL80211_ATTR_CSA_IES],
7867                                nl80211_policy, info->extack);
7868         if (err)
7869                 return err;
7870
7871         err = nl80211_parse_beacon(csa_attrs, &params.beacon_csa);
7872         if (err)
7873                 return err;
7874
7875         if (!csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON])
7876                 return -EINVAL;
7877
7878         len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
7879         if (!len || (len % sizeof(u16)))
7880                 return -EINVAL;
7881
7882         params.n_counter_offsets_beacon = len / sizeof(u16);
7883         if (rdev->wiphy.max_num_csa_counters &&
7884             (params.n_counter_offsets_beacon >
7885              rdev->wiphy.max_num_csa_counters))
7886                 return -EINVAL;
7887
7888         params.counter_offsets_beacon =
7889                 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
7890
7891         /* sanity checks - counters should fit and be the same */
7892         for (i = 0; i < params.n_counter_offsets_beacon; i++) {
7893                 u16 offset = params.counter_offsets_beacon[i];
7894
7895                 if (offset >= params.beacon_csa.tail_len)
7896                         return -EINVAL;
7897
7898                 if (params.beacon_csa.tail[offset] != params.count)
7899                         return -EINVAL;
7900         }
7901
7902         if (csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]) {
7903                 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
7904                 if (!len || (len % sizeof(u16)))
7905                         return -EINVAL;
7906
7907                 params.n_counter_offsets_presp = len / sizeof(u16);
7908                 if (rdev->wiphy.max_num_csa_counters &&
7909                     (params.n_counter_offsets_presp >
7910                      rdev->wiphy.max_num_csa_counters))
7911                         return -EINVAL;
7912
7913                 params.counter_offsets_presp =
7914                         nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
7915
7916                 /* sanity checks - counters should fit and be the same */
7917                 for (i = 0; i < params.n_counter_offsets_presp; i++) {
7918                         u16 offset = params.counter_offsets_presp[i];
7919
7920                         if (offset >= params.beacon_csa.probe_resp_len)
7921                                 return -EINVAL;
7922
7923                         if (params.beacon_csa.probe_resp[offset] !=
7924                             params.count)
7925                                 return -EINVAL;
7926                 }
7927         }
7928
7929 skip_beacons:
7930         err = nl80211_parse_chandef(rdev, info, &params.chandef);
7931         if (err)
7932                 return err;
7933
7934         if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params.chandef,
7935                                            wdev->iftype))
7936                 return -EINVAL;
7937
7938         err = cfg80211_chandef_dfs_required(wdev->wiphy,
7939                                             &params.chandef,
7940                                             wdev->iftype);
7941         if (err < 0)
7942                 return err;
7943
7944         if (err > 0) {
7945                 params.radar_required = true;
7946                 if (need_handle_dfs_flag &&
7947                     !nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS])) {
7948                         return -EINVAL;
7949                 }
7950         }
7951
7952         if (info->attrs[NL80211_ATTR_CH_SWITCH_BLOCK_TX])
7953                 params.block_tx = true;
7954
7955         wdev_lock(wdev);
7956         err = rdev_channel_switch(rdev, dev, &params);
7957         wdev_unlock(wdev);
7958
7959         return err;
7960 }
7961
7962 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
7963                             u32 seq, int flags,
7964                             struct cfg80211_registered_device *rdev,
7965                             struct wireless_dev *wdev,
7966                             struct cfg80211_internal_bss *intbss)
7967 {
7968         struct cfg80211_bss *res = &intbss->pub;
7969         const struct cfg80211_bss_ies *ies;
7970         void *hdr;
7971         struct nlattr *bss;
7972
7973         ASSERT_WDEV_LOCK(wdev);
7974
7975         hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
7976                              NL80211_CMD_NEW_SCAN_RESULTS);
7977         if (!hdr)
7978                 return -1;
7979
7980         genl_dump_check_consistent(cb, hdr);
7981
7982         if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation))
7983                 goto nla_put_failure;
7984         if (wdev->netdev &&
7985             nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex))
7986                 goto nla_put_failure;
7987         if (nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
7988                               NL80211_ATTR_PAD))
7989                 goto nla_put_failure;
7990
7991         bss = nla_nest_start(msg, NL80211_ATTR_BSS);
7992         if (!bss)
7993                 goto nla_put_failure;
7994         if ((!is_zero_ether_addr(res->bssid) &&
7995              nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid)))
7996                 goto nla_put_failure;
7997
7998         rcu_read_lock();
7999         /* indicate whether we have probe response data or not */
8000         if (rcu_access_pointer(res->proberesp_ies) &&
8001             nla_put_flag(msg, NL80211_BSS_PRESP_DATA))
8002                 goto fail_unlock_rcu;
8003
8004         /* this pointer prefers to be pointed to probe response data
8005          * but is always valid
8006          */
8007         ies = rcu_dereference(res->ies);
8008         if (ies) {
8009                 if (nla_put_u64_64bit(msg, NL80211_BSS_TSF, ies->tsf,
8010                                       NL80211_BSS_PAD))
8011                         goto fail_unlock_rcu;
8012                 if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS,
8013                                         ies->len, ies->data))
8014                         goto fail_unlock_rcu;
8015         }
8016
8017         /* and this pointer is always (unless driver didn't know) beacon data */
8018         ies = rcu_dereference(res->beacon_ies);
8019         if (ies && ies->from_beacon) {
8020                 if (nla_put_u64_64bit(msg, NL80211_BSS_BEACON_TSF, ies->tsf,
8021                                       NL80211_BSS_PAD))
8022                         goto fail_unlock_rcu;
8023                 if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES,
8024                                         ies->len, ies->data))
8025                         goto fail_unlock_rcu;
8026         }
8027         rcu_read_unlock();
8028
8029         if (res->beacon_interval &&
8030             nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval))
8031                 goto nla_put_failure;
8032         if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) ||
8033             nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) ||
8034             nla_put_u32(msg, NL80211_BSS_CHAN_WIDTH, res->scan_width) ||
8035             nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO,
8036                         jiffies_to_msecs(jiffies - intbss->ts)))
8037                 goto nla_put_failure;
8038
8039         if (intbss->parent_tsf &&
8040             (nla_put_u64_64bit(msg, NL80211_BSS_PARENT_TSF,
8041                                intbss->parent_tsf, NL80211_BSS_PAD) ||
8042              nla_put(msg, NL80211_BSS_PARENT_BSSID, ETH_ALEN,
8043                      intbss->parent_bssid)))
8044                 goto nla_put_failure;
8045
8046         if (intbss->ts_boottime &&
8047             nla_put_u64_64bit(msg, NL80211_BSS_LAST_SEEN_BOOTTIME,
8048                               intbss->ts_boottime, NL80211_BSS_PAD))
8049                 goto nla_put_failure;
8050
8051         if (!nl80211_put_signal(msg, intbss->pub.chains,
8052                                 intbss->pub.chain_signal,
8053                                 NL80211_BSS_CHAIN_SIGNAL))
8054                 goto nla_put_failure;
8055
8056         switch (rdev->wiphy.signal_type) {
8057         case CFG80211_SIGNAL_TYPE_MBM:
8058                 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal))
8059                         goto nla_put_failure;
8060                 break;
8061         case CFG80211_SIGNAL_TYPE_UNSPEC:
8062                 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal))
8063                         goto nla_put_failure;
8064                 break;
8065         default:
8066                 break;
8067         }
8068
8069         switch (wdev->iftype) {
8070         case NL80211_IFTYPE_P2P_CLIENT:
8071         case NL80211_IFTYPE_STATION:
8072                 if (intbss == wdev->current_bss &&
8073                     nla_put_u32(msg, NL80211_BSS_STATUS,
8074                                 NL80211_BSS_STATUS_ASSOCIATED))
8075                         goto nla_put_failure;
8076                 break;
8077         case NL80211_IFTYPE_ADHOC:
8078                 if (intbss == wdev->current_bss &&
8079                     nla_put_u32(msg, NL80211_BSS_STATUS,
8080                                 NL80211_BSS_STATUS_IBSS_JOINED))
8081                         goto nla_put_failure;
8082                 break;
8083         default:
8084                 break;
8085         }
8086
8087         nla_nest_end(msg, bss);
8088
8089         genlmsg_end(msg, hdr);
8090         return 0;
8091
8092  fail_unlock_rcu:
8093         rcu_read_unlock();
8094  nla_put_failure:
8095         genlmsg_cancel(msg, hdr);
8096         return -EMSGSIZE;
8097 }
8098
8099 static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb)
8100 {
8101         struct cfg80211_registered_device *rdev;
8102         struct cfg80211_internal_bss *scan;
8103         struct wireless_dev *wdev;
8104         int start = cb->args[2], idx = 0;
8105         int err;
8106
8107         rtnl_lock();
8108         err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
8109         if (err) {
8110                 rtnl_unlock();
8111                 return err;
8112         }
8113
8114         wdev_lock(wdev);
8115         spin_lock_bh(&rdev->bss_lock);
8116         cfg80211_bss_expire(rdev);
8117
8118         cb->seq = rdev->bss_generation;
8119
8120         list_for_each_entry(scan, &rdev->bss_list, list) {
8121                 if (++idx <= start)
8122                         continue;
8123                 if (nl80211_send_bss(skb, cb,
8124                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
8125                                 rdev, wdev, scan) < 0) {
8126                         idx--;
8127                         break;
8128                 }
8129         }
8130
8131         spin_unlock_bh(&rdev->bss_lock);
8132         wdev_unlock(wdev);
8133
8134         cb->args[2] = idx;
8135         rtnl_unlock();
8136
8137         return skb->len;
8138 }
8139
8140 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq,
8141                                int flags, struct net_device *dev,
8142                                bool allow_radio_stats,
8143                                struct survey_info *survey)
8144 {
8145         void *hdr;
8146         struct nlattr *infoattr;
8147
8148         /* skip radio stats if userspace didn't request them */
8149         if (!survey->channel && !allow_radio_stats)
8150                 return 0;
8151
8152         hdr = nl80211hdr_put(msg, portid, seq, flags,
8153                              NL80211_CMD_NEW_SURVEY_RESULTS);
8154         if (!hdr)
8155                 return -ENOMEM;
8156
8157         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
8158                 goto nla_put_failure;
8159
8160         infoattr = nla_nest_start(msg, NL80211_ATTR_SURVEY_INFO);
8161         if (!infoattr)
8162                 goto nla_put_failure;
8163
8164         if (survey->channel &&
8165             nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY,
8166                         survey->channel->center_freq))
8167                 goto nla_put_failure;
8168
8169         if ((survey->filled & SURVEY_INFO_NOISE_DBM) &&
8170             nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise))
8171                 goto nla_put_failure;
8172         if ((survey->filled & SURVEY_INFO_IN_USE) &&
8173             nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE))
8174                 goto nla_put_failure;
8175         if ((survey->filled & SURVEY_INFO_TIME) &&
8176             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME,
8177                         survey->time, NL80211_SURVEY_INFO_PAD))
8178                 goto nla_put_failure;
8179         if ((survey->filled & SURVEY_INFO_TIME_BUSY) &&
8180             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_BUSY,
8181                               survey->time_busy, NL80211_SURVEY_INFO_PAD))
8182                 goto nla_put_failure;
8183         if ((survey->filled & SURVEY_INFO_TIME_EXT_BUSY) &&
8184             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_EXT_BUSY,
8185                               survey->time_ext_busy, NL80211_SURVEY_INFO_PAD))
8186                 goto nla_put_failure;
8187         if ((survey->filled & SURVEY_INFO_TIME_RX) &&
8188             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_RX,
8189                               survey->time_rx, NL80211_SURVEY_INFO_PAD))
8190                 goto nla_put_failure;
8191         if ((survey->filled & SURVEY_INFO_TIME_TX) &&
8192             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_TX,
8193                               survey->time_tx, NL80211_SURVEY_INFO_PAD))
8194                 goto nla_put_failure;
8195         if ((survey->filled & SURVEY_INFO_TIME_SCAN) &&
8196             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_SCAN,
8197                               survey->time_scan, NL80211_SURVEY_INFO_PAD))
8198                 goto nla_put_failure;
8199
8200         nla_nest_end(msg, infoattr);
8201
8202         genlmsg_end(msg, hdr);
8203         return 0;
8204
8205  nla_put_failure:
8206         genlmsg_cancel(msg, hdr);
8207         return -EMSGSIZE;
8208 }
8209
8210 static int nl80211_dump_survey(struct sk_buff *skb, struct netlink_callback *cb)
8211 {
8212         struct nlattr **attrbuf = genl_family_attrbuf(&nl80211_fam);
8213         struct survey_info survey;
8214         struct cfg80211_registered_device *rdev;
8215         struct wireless_dev *wdev;
8216         int survey_idx = cb->args[2];
8217         int res;
8218         bool radio_stats;
8219
8220         rtnl_lock();
8221         res = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
8222         if (res)
8223                 goto out_err;
8224
8225         /* prepare_wdev_dump parsed the attributes */
8226         radio_stats = attrbuf[NL80211_ATTR_SURVEY_RADIO_STATS];
8227
8228         if (!wdev->netdev) {
8229                 res = -EINVAL;
8230                 goto out_err;
8231         }
8232
8233         if (!rdev->ops->dump_survey) {
8234                 res = -EOPNOTSUPP;
8235                 goto out_err;
8236         }
8237
8238         while (1) {
8239                 res = rdev_dump_survey(rdev, wdev->netdev, survey_idx, &survey);
8240                 if (res == -ENOENT)
8241                         break;
8242                 if (res)
8243                         goto out_err;
8244
8245                 /* don't send disabled channels, but do send non-channel data */
8246                 if (survey.channel &&
8247                     survey.channel->flags & IEEE80211_CHAN_DISABLED) {
8248                         survey_idx++;
8249                         continue;
8250                 }
8251
8252                 if (nl80211_send_survey(skb,
8253                                 NETLINK_CB(cb->skb).portid,
8254                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
8255                                 wdev->netdev, radio_stats, &survey) < 0)
8256                         goto out;
8257                 survey_idx++;
8258         }
8259
8260  out:
8261         cb->args[2] = survey_idx;
8262         res = skb->len;
8263  out_err:
8264         rtnl_unlock();
8265         return res;
8266 }
8267
8268 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
8269 {
8270         return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
8271                                   NL80211_WPA_VERSION_2));
8272 }
8273
8274 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
8275 {
8276         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8277         struct net_device *dev = info->user_ptr[1];
8278         struct ieee80211_channel *chan;
8279         const u8 *bssid, *ssid, *ie = NULL, *auth_data = NULL;
8280         int err, ssid_len, ie_len = 0, auth_data_len = 0;
8281         enum nl80211_auth_type auth_type;
8282         struct key_parse key;
8283         bool local_state_change;
8284
8285         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8286                 return -EINVAL;
8287
8288         if (!info->attrs[NL80211_ATTR_MAC])
8289                 return -EINVAL;
8290
8291         if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
8292                 return -EINVAL;
8293
8294         if (!info->attrs[NL80211_ATTR_SSID])
8295                 return -EINVAL;
8296
8297         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
8298                 return -EINVAL;
8299
8300         err = nl80211_parse_key(info, &key);
8301         if (err)
8302                 return err;
8303
8304         if (key.idx >= 0) {
8305                 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
8306                         return -EINVAL;
8307                 if (!key.p.key || !key.p.key_len)
8308                         return -EINVAL;
8309                 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
8310                      key.p.key_len != WLAN_KEY_LEN_WEP40) &&
8311                     (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
8312                      key.p.key_len != WLAN_KEY_LEN_WEP104))
8313                         return -EINVAL;
8314                 if (key.idx > 3)
8315                         return -EINVAL;
8316         } else {
8317                 key.p.key_len = 0;
8318                 key.p.key = NULL;
8319         }
8320
8321         if (key.idx >= 0) {
8322                 int i;
8323                 bool ok = false;
8324
8325                 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
8326                         if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
8327                                 ok = true;
8328                                 break;
8329                         }
8330                 }
8331                 if (!ok)
8332                         return -EINVAL;
8333         }
8334
8335         if (!rdev->ops->auth)
8336                 return -EOPNOTSUPP;
8337
8338         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8339             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8340                 return -EOPNOTSUPP;
8341
8342         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8343         chan = nl80211_get_valid_chan(&rdev->wiphy,
8344                                       info->attrs[NL80211_ATTR_WIPHY_FREQ]);
8345         if (!chan)
8346                 return -EINVAL;
8347
8348         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
8349         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
8350
8351         if (info->attrs[NL80211_ATTR_IE]) {
8352                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8353                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8354         }
8355
8356         auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
8357         if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE))
8358                 return -EINVAL;
8359
8360         if ((auth_type == NL80211_AUTHTYPE_SAE ||
8361              auth_type == NL80211_AUTHTYPE_FILS_SK ||
8362              auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
8363              auth_type == NL80211_AUTHTYPE_FILS_PK) &&
8364             !info->attrs[NL80211_ATTR_AUTH_DATA])
8365                 return -EINVAL;
8366
8367         if (info->attrs[NL80211_ATTR_AUTH_DATA]) {
8368                 if (auth_type != NL80211_AUTHTYPE_SAE &&
8369                     auth_type != NL80211_AUTHTYPE_FILS_SK &&
8370                     auth_type != NL80211_AUTHTYPE_FILS_SK_PFS &&
8371                     auth_type != NL80211_AUTHTYPE_FILS_PK)
8372                         return -EINVAL;
8373                 auth_data = nla_data(info->attrs[NL80211_ATTR_AUTH_DATA]);
8374                 auth_data_len = nla_len(info->attrs[NL80211_ATTR_AUTH_DATA]);
8375                 /* need to include at least Auth Transaction and Status Code */
8376                 if (auth_data_len < 4)
8377                         return -EINVAL;
8378         }
8379
8380         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
8381
8382         /*
8383          * Since we no longer track auth state, ignore
8384          * requests to only change local state.
8385          */
8386         if (local_state_change)
8387                 return 0;
8388
8389         wdev_lock(dev->ieee80211_ptr);
8390         err = cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
8391                                  ssid, ssid_len, ie, ie_len,
8392                                  key.p.key, key.p.key_len, key.idx,
8393                                  auth_data, auth_data_len);
8394         wdev_unlock(dev->ieee80211_ptr);
8395         return err;
8396 }
8397
8398 static int validate_pae_over_nl80211(struct cfg80211_registered_device *rdev,
8399                                      struct genl_info *info)
8400 {
8401         if (!info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
8402                 GENL_SET_ERR_MSG(info, "SOCKET_OWNER not set");
8403                 return -EINVAL;
8404         }
8405
8406         if (!rdev->ops->tx_control_port ||
8407             !wiphy_ext_feature_isset(&rdev->wiphy,
8408                                      NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211))
8409                 return -EOPNOTSUPP;
8410
8411         return 0;
8412 }
8413
8414 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
8415                                    struct genl_info *info,
8416                                    struct cfg80211_crypto_settings *settings,
8417                                    int cipher_limit)
8418 {
8419         memset(settings, 0, sizeof(*settings));
8420
8421         settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
8422
8423         if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
8424                 u16 proto;
8425
8426                 proto = nla_get_u16(
8427                         info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
8428                 settings->control_port_ethertype = cpu_to_be16(proto);
8429                 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
8430                     proto != ETH_P_PAE)
8431                         return -EINVAL;
8432                 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
8433                         settings->control_port_no_encrypt = true;
8434         } else
8435                 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
8436
8437         if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
8438                 int r = validate_pae_over_nl80211(rdev, info);
8439
8440                 if (r < 0)
8441                         return r;
8442
8443                 settings->control_port_over_nl80211 = true;
8444         }
8445
8446         if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
8447                 void *data;
8448                 int len, i;
8449
8450                 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
8451                 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
8452                 settings->n_ciphers_pairwise = len / sizeof(u32);
8453
8454                 if (len % sizeof(u32))
8455                         return -EINVAL;
8456
8457                 if (settings->n_ciphers_pairwise > cipher_limit)
8458                         return -EINVAL;
8459
8460                 memcpy(settings->ciphers_pairwise, data, len);
8461
8462                 for (i = 0; i < settings->n_ciphers_pairwise; i++)
8463                         if (!cfg80211_supported_cipher_suite(
8464                                         &rdev->wiphy,
8465                                         settings->ciphers_pairwise[i]))
8466                                 return -EINVAL;
8467         }
8468
8469         if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
8470                 settings->cipher_group =
8471                         nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
8472                 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
8473                                                      settings->cipher_group))
8474                         return -EINVAL;
8475         }
8476
8477         if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
8478                 settings->wpa_versions =
8479                         nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
8480                 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
8481                         return -EINVAL;
8482         }
8483
8484         if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
8485                 void *data;
8486                 int len;
8487
8488                 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
8489                 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
8490                 settings->n_akm_suites = len / sizeof(u32);
8491
8492                 if (len % sizeof(u32))
8493                         return -EINVAL;
8494
8495                 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES)
8496                         return -EINVAL;
8497
8498                 memcpy(settings->akm_suites, data, len);
8499         }
8500
8501         if (info->attrs[NL80211_ATTR_PMK]) {
8502                 if (nla_len(info->attrs[NL80211_ATTR_PMK]) != WLAN_PMK_LEN)
8503                         return -EINVAL;
8504                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
8505                                              NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_PSK))
8506                         return -EINVAL;
8507                 settings->psk = nla_data(info->attrs[NL80211_ATTR_PMK]);
8508         }
8509
8510         return 0;
8511 }
8512
8513 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
8514 {
8515         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8516         struct net_device *dev = info->user_ptr[1];
8517         struct ieee80211_channel *chan;
8518         struct cfg80211_assoc_request req = {};
8519         const u8 *bssid, *ssid;
8520         int err, ssid_len = 0;
8521
8522         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8523                 return -EINVAL;
8524
8525         if (!info->attrs[NL80211_ATTR_MAC] ||
8526             !info->attrs[NL80211_ATTR_SSID] ||
8527             !info->attrs[NL80211_ATTR_WIPHY_FREQ])
8528                 return -EINVAL;
8529
8530         if (!rdev->ops->assoc)
8531                 return -EOPNOTSUPP;
8532
8533         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8534             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8535                 return -EOPNOTSUPP;
8536
8537         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8538
8539         chan = nl80211_get_valid_chan(&rdev->wiphy,
8540                                       info->attrs[NL80211_ATTR_WIPHY_FREQ]);
8541         if (!chan)
8542                 return -EINVAL;
8543
8544         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
8545         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
8546
8547         if (info->attrs[NL80211_ATTR_IE]) {
8548                 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8549                 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8550         }
8551
8552         if (info->attrs[NL80211_ATTR_USE_MFP]) {
8553                 enum nl80211_mfp mfp =
8554                         nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
8555                 if (mfp == NL80211_MFP_REQUIRED)
8556                         req.use_mfp = true;
8557                 else if (mfp != NL80211_MFP_NO)
8558                         return -EINVAL;
8559         }
8560
8561         if (info->attrs[NL80211_ATTR_PREV_BSSID])
8562                 req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
8563
8564         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
8565                 req.flags |= ASSOC_REQ_DISABLE_HT;
8566
8567         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
8568                 memcpy(&req.ht_capa_mask,
8569                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
8570                        sizeof(req.ht_capa_mask));
8571
8572         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
8573                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
8574                         return -EINVAL;
8575                 memcpy(&req.ht_capa,
8576                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
8577                        sizeof(req.ht_capa));
8578         }
8579
8580         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
8581                 req.flags |= ASSOC_REQ_DISABLE_VHT;
8582
8583         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
8584                 memcpy(&req.vht_capa_mask,
8585                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
8586                        sizeof(req.vht_capa_mask));
8587
8588         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
8589                 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
8590                         return -EINVAL;
8591                 memcpy(&req.vht_capa,
8592                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
8593                        sizeof(req.vht_capa));
8594         }
8595
8596         if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
8597                 if (!((rdev->wiphy.features &
8598                         NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
8599                        (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
8600                     !wiphy_ext_feature_isset(&rdev->wiphy,
8601                                              NL80211_EXT_FEATURE_RRM))
8602                         return -EINVAL;
8603                 req.flags |= ASSOC_REQ_USE_RRM;
8604         }
8605
8606         if (info->attrs[NL80211_ATTR_FILS_KEK]) {
8607                 req.fils_kek = nla_data(info->attrs[NL80211_ATTR_FILS_KEK]);
8608                 req.fils_kek_len = nla_len(info->attrs[NL80211_ATTR_FILS_KEK]);
8609                 if (!info->attrs[NL80211_ATTR_FILS_NONCES])
8610                         return -EINVAL;
8611                 req.fils_nonces =
8612                         nla_data(info->attrs[NL80211_ATTR_FILS_NONCES]);
8613         }
8614
8615         err = nl80211_crypto_settings(rdev, info, &req.crypto, 1);
8616         if (!err) {
8617                 wdev_lock(dev->ieee80211_ptr);
8618
8619                 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid,
8620                                           ssid, ssid_len, &req);
8621
8622                 if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
8623                         dev->ieee80211_ptr->conn_owner_nlportid =
8624                                 info->snd_portid;
8625                         memcpy(dev->ieee80211_ptr->disconnect_bssid,
8626                                bssid, ETH_ALEN);
8627                 }
8628
8629                 wdev_unlock(dev->ieee80211_ptr);
8630         }
8631
8632         return err;
8633 }
8634
8635 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
8636 {
8637         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8638         struct net_device *dev = info->user_ptr[1];
8639         const u8 *ie = NULL, *bssid;
8640         int ie_len = 0, err;
8641         u16 reason_code;
8642         bool local_state_change;
8643
8644         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8645                 return -EINVAL;
8646
8647         if (!info->attrs[NL80211_ATTR_MAC])
8648                 return -EINVAL;
8649
8650         if (!info->attrs[NL80211_ATTR_REASON_CODE])
8651                 return -EINVAL;
8652
8653         if (!rdev->ops->deauth)
8654                 return -EOPNOTSUPP;
8655
8656         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8657             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8658                 return -EOPNOTSUPP;
8659
8660         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8661
8662         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
8663         if (reason_code == 0) {
8664                 /* Reason Code 0 is reserved */
8665                 return -EINVAL;
8666         }
8667
8668         if (info->attrs[NL80211_ATTR_IE]) {
8669                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8670                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8671         }
8672
8673         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
8674
8675         wdev_lock(dev->ieee80211_ptr);
8676         err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
8677                                    local_state_change);
8678         wdev_unlock(dev->ieee80211_ptr);
8679         return err;
8680 }
8681
8682 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
8683 {
8684         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8685         struct net_device *dev = info->user_ptr[1];
8686         const u8 *ie = NULL, *bssid;
8687         int ie_len = 0, err;
8688         u16 reason_code;
8689         bool local_state_change;
8690
8691         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8692                 return -EINVAL;
8693
8694         if (!info->attrs[NL80211_ATTR_MAC])
8695                 return -EINVAL;
8696
8697         if (!info->attrs[NL80211_ATTR_REASON_CODE])
8698                 return -EINVAL;
8699
8700         if (!rdev->ops->disassoc)
8701                 return -EOPNOTSUPP;
8702
8703         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8704             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8705                 return -EOPNOTSUPP;
8706
8707         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8708
8709         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
8710         if (reason_code == 0) {
8711                 /* Reason Code 0 is reserved */
8712                 return -EINVAL;
8713         }
8714
8715         if (info->attrs[NL80211_ATTR_IE]) {
8716                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8717                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8718         }
8719
8720         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
8721
8722         wdev_lock(dev->ieee80211_ptr);
8723         err = cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
8724                                      local_state_change);
8725         wdev_unlock(dev->ieee80211_ptr);
8726         return err;
8727 }
8728
8729 static bool
8730 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
8731                          int mcast_rate[NUM_NL80211_BANDS],
8732                          int rateval)
8733 {
8734         struct wiphy *wiphy = &rdev->wiphy;
8735         bool found = false;
8736         int band, i;
8737
8738         for (band = 0; band < NUM_NL80211_BANDS; band++) {
8739                 struct ieee80211_supported_band *sband;
8740
8741                 sband = wiphy->bands[band];
8742                 if (!sband)
8743                         continue;
8744
8745                 for (i = 0; i < sband->n_bitrates; i++) {
8746                         if (sband->bitrates[i].bitrate == rateval) {
8747                                 mcast_rate[band] = i + 1;
8748                                 found = true;
8749                                 break;
8750                         }
8751                 }
8752         }
8753
8754         return found;
8755 }
8756
8757 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
8758 {
8759         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8760         struct net_device *dev = info->user_ptr[1];
8761         struct cfg80211_ibss_params ibss;
8762         struct wiphy *wiphy;
8763         struct cfg80211_cached_keys *connkeys = NULL;
8764         int err;
8765
8766         memset(&ibss, 0, sizeof(ibss));
8767
8768         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8769                 return -EINVAL;
8770
8771         if (!info->attrs[NL80211_ATTR_SSID] ||
8772             !nla_len(info->attrs[NL80211_ATTR_SSID]))
8773                 return -EINVAL;
8774
8775         ibss.beacon_interval = 100;
8776
8777         if (info->attrs[NL80211_ATTR_BEACON_INTERVAL])
8778                 ibss.beacon_interval =
8779                         nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
8780
8781         err = cfg80211_validate_beacon_int(rdev, NL80211_IFTYPE_ADHOC,
8782                                            ibss.beacon_interval);
8783         if (err)
8784                 return err;
8785
8786         if (!rdev->ops->join_ibss)
8787                 return -EOPNOTSUPP;
8788
8789         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
8790                 return -EOPNOTSUPP;
8791
8792         wiphy = &rdev->wiphy;
8793
8794         if (info->attrs[NL80211_ATTR_MAC]) {
8795                 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8796
8797                 if (!is_valid_ether_addr(ibss.bssid))
8798                         return -EINVAL;
8799         }
8800         ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
8801         ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
8802
8803         if (info->attrs[NL80211_ATTR_IE]) {
8804                 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8805                 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8806         }
8807
8808         err = nl80211_parse_chandef(rdev, info, &ibss.chandef);
8809         if (err)
8810                 return err;
8811
8812         if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef,
8813                                      NL80211_IFTYPE_ADHOC))
8814                 return -EINVAL;
8815
8816         switch (ibss.chandef.width) {
8817         case NL80211_CHAN_WIDTH_5:
8818         case NL80211_CHAN_WIDTH_10:
8819         case NL80211_CHAN_WIDTH_20_NOHT:
8820                 break;
8821         case NL80211_CHAN_WIDTH_20:
8822         case NL80211_CHAN_WIDTH_40:
8823                 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
8824                         return -EINVAL;
8825                 break;
8826         case NL80211_CHAN_WIDTH_80:
8827         case NL80211_CHAN_WIDTH_80P80:
8828         case NL80211_CHAN_WIDTH_160:
8829                 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
8830                         return -EINVAL;
8831                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
8832                                              NL80211_EXT_FEATURE_VHT_IBSS))
8833                         return -EINVAL;
8834                 break;
8835         default:
8836                 return -EINVAL;
8837         }
8838
8839         ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
8840         ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
8841
8842         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
8843                 u8 *rates =
8844                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
8845                 int n_rates =
8846                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
8847                 struct ieee80211_supported_band *sband =
8848                         wiphy->bands[ibss.chandef.chan->band];
8849
8850                 err = ieee80211_get_ratemask(sband, rates, n_rates,
8851                                              &ibss.basic_rates);
8852                 if (err)
8853                         return err;
8854         }
8855
8856         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
8857                 memcpy(&ibss.ht_capa_mask,
8858                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
8859                        sizeof(ibss.ht_capa_mask));
8860
8861         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
8862                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
8863                         return -EINVAL;
8864                 memcpy(&ibss.ht_capa,
8865                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
8866                        sizeof(ibss.ht_capa));
8867         }
8868
8869         if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
8870             !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
8871                         nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
8872                 return -EINVAL;
8873
8874         if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
8875                 bool no_ht = false;
8876
8877                 connkeys = nl80211_parse_connkeys(rdev, info, &no_ht);
8878                 if (IS_ERR(connkeys))
8879                         return PTR_ERR(connkeys);
8880
8881                 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) &&
8882                     no_ht) {
8883                         kzfree(connkeys);
8884                         return -EINVAL;
8885                 }
8886         }
8887
8888         ibss.control_port =
8889                 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]);
8890
8891         if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
8892                 int r = validate_pae_over_nl80211(rdev, info);
8893
8894                 if (r < 0)
8895                         return r;
8896
8897                 ibss.control_port_over_nl80211 = true;
8898         }
8899
8900         ibss.userspace_handles_dfs =
8901                 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
8902
8903         wdev_lock(dev->ieee80211_ptr);
8904         err = __cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
8905         if (err)
8906                 kzfree(connkeys);
8907         else if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
8908                 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
8909         wdev_unlock(dev->ieee80211_ptr);
8910
8911         return err;
8912 }
8913
8914 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
8915 {
8916         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8917         struct net_device *dev = info->user_ptr[1];
8918
8919         if (!rdev->ops->leave_ibss)
8920                 return -EOPNOTSUPP;
8921
8922         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
8923                 return -EOPNOTSUPP;
8924
8925         return cfg80211_leave_ibss(rdev, dev, false);
8926 }
8927
8928 static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info)
8929 {
8930         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8931         struct net_device *dev = info->user_ptr[1];
8932         int mcast_rate[NUM_NL80211_BANDS];
8933         u32 nla_rate;
8934         int err;
8935
8936         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
8937             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
8938             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_OCB)
8939                 return -EOPNOTSUPP;
8940
8941         if (!rdev->ops->set_mcast_rate)
8942                 return -EOPNOTSUPP;
8943
8944         memset(mcast_rate, 0, sizeof(mcast_rate));
8945
8946         if (!info->attrs[NL80211_ATTR_MCAST_RATE])
8947                 return -EINVAL;
8948
8949         nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]);
8950         if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate))
8951                 return -EINVAL;
8952
8953         err = rdev_set_mcast_rate(rdev, dev, mcast_rate);
8954
8955         return err;
8956 }
8957
8958 static struct sk_buff *
8959 __cfg80211_alloc_vendor_skb(struct cfg80211_registered_device *rdev,
8960                             struct wireless_dev *wdev, int approxlen,
8961                             u32 portid, u32 seq, enum nl80211_commands cmd,
8962                             enum nl80211_attrs attr,
8963                             const struct nl80211_vendor_cmd_info *info,
8964                             gfp_t gfp)
8965 {
8966         struct sk_buff *skb;
8967         void *hdr;
8968         struct nlattr *data;
8969
8970         skb = nlmsg_new(approxlen + 100, gfp);
8971         if (!skb)
8972                 return NULL;
8973
8974         hdr = nl80211hdr_put(skb, portid, seq, 0, cmd);
8975         if (!hdr) {
8976                 kfree_skb(skb);
8977                 return NULL;
8978         }
8979
8980         if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
8981                 goto nla_put_failure;
8982
8983         if (info) {
8984                 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_ID,
8985                                 info->vendor_id))
8986                         goto nla_put_failure;
8987                 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_SUBCMD,
8988                                 info->subcmd))
8989                         goto nla_put_failure;
8990         }
8991
8992         if (wdev) {
8993                 if (nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
8994                                       wdev_id(wdev), NL80211_ATTR_PAD))
8995                         goto nla_put_failure;
8996                 if (wdev->netdev &&
8997                     nla_put_u32(skb, NL80211_ATTR_IFINDEX,
8998                                 wdev->netdev->ifindex))
8999                         goto nla_put_failure;
9000         }
9001
9002         data = nla_nest_start(skb, attr);
9003         if (!data)
9004                 goto nla_put_failure;
9005
9006         ((void **)skb->cb)[0] = rdev;
9007         ((void **)skb->cb)[1] = hdr;
9008         ((void **)skb->cb)[2] = data;
9009
9010         return skb;
9011
9012  nla_put_failure:
9013         kfree_skb(skb);
9014         return NULL;
9015 }
9016
9017 struct sk_buff *__cfg80211_alloc_event_skb(struct wiphy *wiphy,
9018                                            struct wireless_dev *wdev,
9019                                            enum nl80211_commands cmd,
9020                                            enum nl80211_attrs attr,
9021                                            int vendor_event_idx,
9022                                            int approxlen, gfp_t gfp)
9023 {
9024         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
9025         const struct nl80211_vendor_cmd_info *info;
9026
9027         switch (cmd) {
9028         case NL80211_CMD_TESTMODE:
9029                 if (WARN_ON(vendor_event_idx != -1))
9030                         return NULL;
9031                 info = NULL;
9032                 break;
9033         case NL80211_CMD_VENDOR:
9034                 if (WARN_ON(vendor_event_idx < 0 ||
9035                             vendor_event_idx >= wiphy->n_vendor_events))
9036                         return NULL;
9037                 info = &wiphy->vendor_events[vendor_event_idx];
9038                 break;
9039         default:
9040                 WARN_ON(1);
9041                 return NULL;
9042         }
9043
9044         return __cfg80211_alloc_vendor_skb(rdev, wdev, approxlen, 0, 0,
9045                                            cmd, attr, info, gfp);
9046 }
9047 EXPORT_SYMBOL(__cfg80211_alloc_event_skb);
9048
9049 void __cfg80211_send_event_skb(struct sk_buff *skb, gfp_t gfp)
9050 {
9051         struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
9052         void *hdr = ((void **)skb->cb)[1];
9053         struct nlattr *data = ((void **)skb->cb)[2];
9054         enum nl80211_multicast_groups mcgrp = NL80211_MCGRP_TESTMODE;
9055
9056         /* clear CB data for netlink core to own from now on */
9057         memset(skb->cb, 0, sizeof(skb->cb));
9058
9059         nla_nest_end(skb, data);
9060         genlmsg_end(skb, hdr);
9061
9062         if (data->nla_type == NL80211_ATTR_VENDOR_DATA)
9063                 mcgrp = NL80211_MCGRP_VENDOR;
9064
9065         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), skb, 0,
9066                                 mcgrp, gfp);
9067 }
9068 EXPORT_SYMBOL(__cfg80211_send_event_skb);
9069
9070 #ifdef CONFIG_NL80211_TESTMODE
9071 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
9072 {
9073         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9074         struct wireless_dev *wdev =
9075                 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
9076         int err;
9077
9078         if (!rdev->ops->testmode_cmd)
9079                 return -EOPNOTSUPP;
9080
9081         if (IS_ERR(wdev)) {
9082                 err = PTR_ERR(wdev);
9083                 if (err != -EINVAL)
9084                         return err;
9085                 wdev = NULL;
9086         } else if (wdev->wiphy != &rdev->wiphy) {
9087                 return -EINVAL;
9088         }
9089
9090         if (!info->attrs[NL80211_ATTR_TESTDATA])
9091                 return -EINVAL;
9092
9093         rdev->cur_cmd_info = info;
9094         err = rdev_testmode_cmd(rdev, wdev,
9095                                 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
9096                                 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
9097         rdev->cur_cmd_info = NULL;
9098
9099         return err;
9100 }
9101
9102 static int nl80211_testmode_dump(struct sk_buff *skb,
9103                                  struct netlink_callback *cb)
9104 {
9105         struct cfg80211_registered_device *rdev;
9106         int err;
9107         long phy_idx;
9108         void *data = NULL;
9109         int data_len = 0;
9110
9111         rtnl_lock();
9112
9113         if (cb->args[0]) {
9114                 /*
9115                  * 0 is a valid index, but not valid for args[0],
9116                  * so we need to offset by 1.
9117                  */
9118                 phy_idx = cb->args[0] - 1;
9119
9120                 rdev = cfg80211_rdev_by_wiphy_idx(phy_idx);
9121                 if (!rdev) {
9122                         err = -ENOENT;
9123                         goto out_err;
9124                 }
9125         } else {
9126                 struct nlattr **attrbuf = genl_family_attrbuf(&nl80211_fam);
9127
9128                 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
9129                                   attrbuf, nl80211_fam.maxattr,
9130                                   nl80211_policy, NULL);
9131                 if (err)
9132                         goto out_err;
9133
9134                 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf);
9135                 if (IS_ERR(rdev)) {
9136                         err = PTR_ERR(rdev);
9137                         goto out_err;
9138                 }
9139                 phy_idx = rdev->wiphy_idx;
9140
9141                 if (attrbuf[NL80211_ATTR_TESTDATA])
9142                         cb->args[1] = (long)attrbuf[NL80211_ATTR_TESTDATA];
9143         }
9144
9145         if (cb->args[1]) {
9146                 data = nla_data((void *)cb->args[1]);
9147                 data_len = nla_len((void *)cb->args[1]);
9148         }
9149
9150         if (!rdev->ops->testmode_dump) {
9151                 err = -EOPNOTSUPP;
9152                 goto out_err;
9153         }
9154
9155         while (1) {
9156                 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
9157                                            cb->nlh->nlmsg_seq, NLM_F_MULTI,
9158                                            NL80211_CMD_TESTMODE);
9159                 struct nlattr *tmdata;
9160
9161                 if (!hdr)
9162                         break;
9163
9164                 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) {
9165                         genlmsg_cancel(skb, hdr);
9166                         break;
9167                 }
9168
9169                 tmdata = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
9170                 if (!tmdata) {
9171                         genlmsg_cancel(skb, hdr);
9172                         break;
9173                 }
9174                 err = rdev_testmode_dump(rdev, skb, cb, data, data_len);
9175                 nla_nest_end(skb, tmdata);
9176
9177                 if (err == -ENOBUFS || err == -ENOENT) {
9178                         genlmsg_cancel(skb, hdr);
9179                         break;
9180                 } else if (err) {
9181                         genlmsg_cancel(skb, hdr);
9182                         goto out_err;
9183                 }
9184
9185                 genlmsg_end(skb, hdr);
9186         }
9187
9188         err = skb->len;
9189         /* see above */
9190         cb->args[0] = phy_idx + 1;
9191  out_err:
9192         rtnl_unlock();
9193         return err;
9194 }
9195 #endif
9196
9197 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
9198 {
9199         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9200         struct net_device *dev = info->user_ptr[1];
9201         struct cfg80211_connect_params connect;
9202         struct wiphy *wiphy;
9203         struct cfg80211_cached_keys *connkeys = NULL;
9204         int err;
9205
9206         memset(&connect, 0, sizeof(connect));
9207
9208         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
9209                 return -EINVAL;
9210
9211         if (!info->attrs[NL80211_ATTR_SSID] ||
9212             !nla_len(info->attrs[NL80211_ATTR_SSID]))
9213                 return -EINVAL;
9214
9215         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
9216                 connect.auth_type =
9217                         nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
9218                 if (!nl80211_valid_auth_type(rdev, connect.auth_type,
9219                                              NL80211_CMD_CONNECT))
9220                         return -EINVAL;
9221         } else
9222                 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
9223
9224         connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
9225
9226         if (info->attrs[NL80211_ATTR_WANT_1X_4WAY_HS] &&
9227             !wiphy_ext_feature_isset(&rdev->wiphy,
9228                                      NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
9229                 return -EINVAL;
9230         connect.want_1x = info->attrs[NL80211_ATTR_WANT_1X_4WAY_HS];
9231
9232         err = nl80211_crypto_settings(rdev, info, &connect.crypto,
9233                                       NL80211_MAX_NR_CIPHER_SUITES);
9234         if (err)
9235                 return err;
9236
9237         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9238             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9239                 return -EOPNOTSUPP;
9240
9241         wiphy = &rdev->wiphy;
9242
9243         connect.bg_scan_period = -1;
9244         if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] &&
9245                 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) {
9246                 connect.bg_scan_period =
9247                         nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]);
9248         }
9249
9250         if (info->attrs[NL80211_ATTR_MAC])
9251                 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9252         else if (info->attrs[NL80211_ATTR_MAC_HINT])
9253                 connect.bssid_hint =
9254                         nla_data(info->attrs[NL80211_ATTR_MAC_HINT]);
9255         connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
9256         connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
9257
9258         if (info->attrs[NL80211_ATTR_IE]) {
9259                 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9260                 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9261         }
9262
9263         if (info->attrs[NL80211_ATTR_USE_MFP]) {
9264                 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
9265                 if (connect.mfp == NL80211_MFP_OPTIONAL &&
9266                     !wiphy_ext_feature_isset(&rdev->wiphy,
9267                                              NL80211_EXT_FEATURE_MFP_OPTIONAL))
9268                         return -EOPNOTSUPP;
9269
9270                 if (connect.mfp != NL80211_MFP_REQUIRED &&
9271                     connect.mfp != NL80211_MFP_NO &&
9272                     connect.mfp != NL80211_MFP_OPTIONAL)
9273                         return -EINVAL;
9274         } else {
9275                 connect.mfp = NL80211_MFP_NO;
9276         }
9277
9278         if (info->attrs[NL80211_ATTR_PREV_BSSID])
9279                 connect.prev_bssid =
9280                         nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
9281
9282         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
9283                 connect.channel = nl80211_get_valid_chan(
9284                         wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ]);
9285                 if (!connect.channel)
9286                         return -EINVAL;
9287         } else if (info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]) {
9288                 connect.channel_hint = nl80211_get_valid_chan(
9289                         wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]);
9290                 if (!connect.channel_hint)
9291                         return -EINVAL;
9292         }
9293
9294         if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
9295                 connkeys = nl80211_parse_connkeys(rdev, info, NULL);
9296                 if (IS_ERR(connkeys))
9297                         return PTR_ERR(connkeys);
9298         }
9299
9300         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
9301                 connect.flags |= ASSOC_REQ_DISABLE_HT;
9302
9303         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
9304                 memcpy(&connect.ht_capa_mask,
9305                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
9306                        sizeof(connect.ht_capa_mask));
9307
9308         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
9309                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) {
9310                         kzfree(connkeys);
9311                         return -EINVAL;
9312                 }
9313                 memcpy(&connect.ht_capa,
9314                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
9315                        sizeof(connect.ht_capa));
9316         }
9317
9318         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
9319                 connect.flags |= ASSOC_REQ_DISABLE_VHT;
9320
9321         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
9322                 memcpy(&connect.vht_capa_mask,
9323                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
9324                        sizeof(connect.vht_capa_mask));
9325
9326         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
9327                 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) {
9328                         kzfree(connkeys);
9329                         return -EINVAL;
9330                 }
9331                 memcpy(&connect.vht_capa,
9332                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
9333                        sizeof(connect.vht_capa));
9334         }
9335
9336         if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
9337                 if (!((rdev->wiphy.features &
9338                         NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
9339                        (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
9340                     !wiphy_ext_feature_isset(&rdev->wiphy,
9341                                              NL80211_EXT_FEATURE_RRM)) {
9342                         kzfree(connkeys);
9343                         return -EINVAL;
9344                 }
9345                 connect.flags |= ASSOC_REQ_USE_RRM;
9346         }
9347
9348         connect.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
9349         if (connect.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ]) {
9350                 kzfree(connkeys);
9351                 return -EOPNOTSUPP;
9352         }
9353
9354         if (info->attrs[NL80211_ATTR_BSS_SELECT]) {
9355                 /* bss selection makes no sense if bssid is set */
9356                 if (connect.bssid) {
9357                         kzfree(connkeys);
9358                         return -EINVAL;
9359                 }
9360
9361                 err = parse_bss_select(info->attrs[NL80211_ATTR_BSS_SELECT],
9362                                        wiphy, &connect.bss_select);
9363                 if (err) {
9364                         kzfree(connkeys);
9365                         return err;
9366                 }
9367         }
9368
9369         if (wiphy_ext_feature_isset(&rdev->wiphy,
9370                                     NL80211_EXT_FEATURE_FILS_SK_OFFLOAD) &&
9371             info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] &&
9372             info->attrs[NL80211_ATTR_FILS_ERP_REALM] &&
9373             info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] &&
9374             info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
9375                 connect.fils_erp_username =
9376                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
9377                 connect.fils_erp_username_len =
9378                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
9379                 connect.fils_erp_realm =
9380                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
9381                 connect.fils_erp_realm_len =
9382                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
9383                 connect.fils_erp_next_seq_num =
9384                         nla_get_u16(
9385                            info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM]);
9386                 connect.fils_erp_rrk =
9387                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
9388                 connect.fils_erp_rrk_len =
9389                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
9390         } else if (info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] ||
9391                    info->attrs[NL80211_ATTR_FILS_ERP_REALM] ||
9392                    info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] ||
9393                    info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
9394                 kzfree(connkeys);
9395                 return -EINVAL;
9396         }
9397
9398         if (nla_get_flag(info->attrs[NL80211_ATTR_EXTERNAL_AUTH_SUPPORT])) {
9399                 if (!info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
9400                         GENL_SET_ERR_MSG(info,
9401                                          "external auth requires connection ownership");
9402                         return -EINVAL;
9403                 }
9404                 connect.flags |= CONNECT_REQ_EXTERNAL_AUTH_SUPPORT;
9405         }
9406
9407         wdev_lock(dev->ieee80211_ptr);
9408
9409         err = cfg80211_connect(rdev, dev, &connect, connkeys,
9410                                connect.prev_bssid);
9411         if (err)
9412                 kzfree(connkeys);
9413
9414         if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
9415                 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
9416                 if (connect.bssid)
9417                         memcpy(dev->ieee80211_ptr->disconnect_bssid,
9418                                connect.bssid, ETH_ALEN);
9419                 else
9420                         memset(dev->ieee80211_ptr->disconnect_bssid,
9421                                0, ETH_ALEN);
9422         }
9423
9424         wdev_unlock(dev->ieee80211_ptr);
9425
9426         return err;
9427 }
9428
9429 static int nl80211_update_connect_params(struct sk_buff *skb,
9430                                          struct genl_info *info)
9431 {
9432         struct cfg80211_connect_params connect = {};
9433         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9434         struct net_device *dev = info->user_ptr[1];
9435         struct wireless_dev *wdev = dev->ieee80211_ptr;
9436         u32 changed = 0;
9437         int ret;
9438
9439         if (!rdev->ops->update_connect_params)
9440                 return -EOPNOTSUPP;
9441
9442         if (info->attrs[NL80211_ATTR_IE]) {
9443                 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
9444                         return -EINVAL;
9445                 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9446                 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9447                 changed |= UPDATE_ASSOC_IES;
9448         }
9449
9450         wdev_lock(dev->ieee80211_ptr);
9451         if (!wdev->current_bss)
9452                 ret = -ENOLINK;
9453         else
9454                 ret = rdev_update_connect_params(rdev, dev, &connect, changed);
9455         wdev_unlock(dev->ieee80211_ptr);
9456
9457         return ret;
9458 }
9459
9460 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
9461 {
9462         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9463         struct net_device *dev = info->user_ptr[1];
9464         u16 reason;
9465         int ret;
9466
9467         if (!info->attrs[NL80211_ATTR_REASON_CODE])
9468                 reason = WLAN_REASON_DEAUTH_LEAVING;
9469         else
9470                 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
9471
9472         if (reason == 0)
9473                 return -EINVAL;
9474
9475         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9476             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9477                 return -EOPNOTSUPP;
9478
9479         wdev_lock(dev->ieee80211_ptr);
9480         ret = cfg80211_disconnect(rdev, dev, reason, true);
9481         wdev_unlock(dev->ieee80211_ptr);
9482         return ret;
9483 }
9484
9485 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
9486 {
9487         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9488         struct net *net;
9489         int err;
9490
9491         if (info->attrs[NL80211_ATTR_PID]) {
9492                 u32 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
9493
9494                 net = get_net_ns_by_pid(pid);
9495         } else if (info->attrs[NL80211_ATTR_NETNS_FD]) {
9496                 u32 fd = nla_get_u32(info->attrs[NL80211_ATTR_NETNS_FD]);
9497
9498                 net = get_net_ns_by_fd(fd);
9499         } else {
9500                 return -EINVAL;
9501         }
9502
9503         if (IS_ERR(net))
9504                 return PTR_ERR(net);
9505
9506         err = 0;
9507
9508         /* check if anything to do */
9509         if (!net_eq(wiphy_net(&rdev->wiphy), net))
9510                 err = cfg80211_switch_netns(rdev, net);
9511
9512         put_net(net);
9513         return err;
9514 }
9515
9516 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
9517 {
9518         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9519         int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
9520                         struct cfg80211_pmksa *pmksa) = NULL;
9521         struct net_device *dev = info->user_ptr[1];
9522         struct cfg80211_pmksa pmksa;
9523
9524         memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
9525
9526         if (!info->attrs[NL80211_ATTR_PMKID])
9527                 return -EINVAL;
9528
9529         pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
9530
9531         if (info->attrs[NL80211_ATTR_MAC]) {
9532                 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9533         } else if (info->attrs[NL80211_ATTR_SSID] &&
9534                    info->attrs[NL80211_ATTR_FILS_CACHE_ID] &&
9535                    (info->genlhdr->cmd == NL80211_CMD_DEL_PMKSA ||
9536                     info->attrs[NL80211_ATTR_PMK])) {
9537                 pmksa.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
9538                 pmksa.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
9539                 pmksa.cache_id =
9540                         nla_data(info->attrs[NL80211_ATTR_FILS_CACHE_ID]);
9541         } else {
9542                 return -EINVAL;
9543         }
9544         if (info->attrs[NL80211_ATTR_PMK]) {
9545                 pmksa.pmk = nla_data(info->attrs[NL80211_ATTR_PMK]);
9546                 pmksa.pmk_len = nla_len(info->attrs[NL80211_ATTR_PMK]);
9547         }
9548
9549         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9550             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9551                 return -EOPNOTSUPP;
9552
9553         switch (info->genlhdr->cmd) {
9554         case NL80211_CMD_SET_PMKSA:
9555                 rdev_ops = rdev->ops->set_pmksa;
9556                 break;
9557         case NL80211_CMD_DEL_PMKSA:
9558                 rdev_ops = rdev->ops->del_pmksa;
9559                 break;
9560         default:
9561                 WARN_ON(1);
9562                 break;
9563         }
9564
9565         if (!rdev_ops)
9566                 return -EOPNOTSUPP;
9567
9568         return rdev_ops(&rdev->wiphy, dev, &pmksa);
9569 }
9570
9571 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
9572 {
9573         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9574         struct net_device *dev = info->user_ptr[1];
9575
9576         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9577             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9578                 return -EOPNOTSUPP;
9579
9580         if (!rdev->ops->flush_pmksa)
9581                 return -EOPNOTSUPP;
9582
9583         return rdev_flush_pmksa(rdev, dev);
9584 }
9585
9586 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
9587 {
9588         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9589         struct net_device *dev = info->user_ptr[1];
9590         u8 action_code, dialog_token;
9591         u32 peer_capability = 0;
9592         u16 status_code;
9593         u8 *peer;
9594         bool initiator;
9595
9596         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
9597             !rdev->ops->tdls_mgmt)
9598                 return -EOPNOTSUPP;
9599
9600         if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
9601             !info->attrs[NL80211_ATTR_STATUS_CODE] ||
9602             !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
9603             !info->attrs[NL80211_ATTR_IE] ||
9604             !info->attrs[NL80211_ATTR_MAC])
9605                 return -EINVAL;
9606
9607         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
9608         action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
9609         status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
9610         dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
9611         initiator = nla_get_flag(info->attrs[NL80211_ATTR_TDLS_INITIATOR]);
9612         if (info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY])
9613                 peer_capability =
9614                         nla_get_u32(info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY]);
9615
9616         return rdev_tdls_mgmt(rdev, dev, peer, action_code,
9617                               dialog_token, status_code, peer_capability,
9618                               initiator,
9619                               nla_data(info->attrs[NL80211_ATTR_IE]),
9620                               nla_len(info->attrs[NL80211_ATTR_IE]));
9621 }
9622
9623 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
9624 {
9625         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9626         struct net_device *dev = info->user_ptr[1];
9627         enum nl80211_tdls_operation operation;
9628         u8 *peer;
9629
9630         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
9631             !rdev->ops->tdls_oper)
9632                 return -EOPNOTSUPP;
9633
9634         if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
9635             !info->attrs[NL80211_ATTR_MAC])
9636                 return -EINVAL;
9637
9638         operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
9639         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
9640
9641         return rdev_tdls_oper(rdev, dev, peer, operation);
9642 }
9643
9644 static int nl80211_remain_on_channel(struct sk_buff *skb,
9645                                      struct genl_info *info)
9646 {
9647         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9648         struct wireless_dev *wdev = info->user_ptr[1];
9649         struct cfg80211_chan_def chandef;
9650         const struct cfg80211_chan_def *compat_chandef;
9651         struct sk_buff *msg;
9652         void *hdr;
9653         u64 cookie;
9654         u32 duration;
9655         int err;
9656
9657         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
9658             !info->attrs[NL80211_ATTR_DURATION])
9659                 return -EINVAL;
9660
9661         duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
9662
9663         if (!rdev->ops->remain_on_channel ||
9664             !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL))
9665                 return -EOPNOTSUPP;
9666
9667         /*
9668          * We should be on that channel for at least a minimum amount of
9669          * time (10ms) but no longer than the driver supports.
9670          */
9671         if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
9672             duration > rdev->wiphy.max_remain_on_channel_duration)
9673                 return -EINVAL;
9674
9675         err = nl80211_parse_chandef(rdev, info, &chandef);
9676         if (err)
9677                 return err;
9678
9679         wdev_lock(wdev);
9680         if (!cfg80211_off_channel_oper_allowed(wdev) &&
9681             !cfg80211_chandef_identical(&wdev->chandef, &chandef)) {
9682                 compat_chandef = cfg80211_chandef_compatible(&wdev->chandef,
9683                                                              &chandef);
9684                 if (compat_chandef != &chandef) {
9685                         wdev_unlock(wdev);
9686                         return -EBUSY;
9687                 }
9688         }
9689         wdev_unlock(wdev);
9690
9691         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9692         if (!msg)
9693                 return -ENOMEM;
9694
9695         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9696                              NL80211_CMD_REMAIN_ON_CHANNEL);
9697         if (!hdr) {
9698                 err = -ENOBUFS;
9699                 goto free_msg;
9700         }
9701
9702         err = rdev_remain_on_channel(rdev, wdev, chandef.chan,
9703                                      duration, &cookie);
9704
9705         if (err)
9706                 goto free_msg;
9707
9708         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
9709                               NL80211_ATTR_PAD))
9710                 goto nla_put_failure;
9711
9712         genlmsg_end(msg, hdr);
9713
9714         return genlmsg_reply(msg, info);
9715
9716  nla_put_failure:
9717         err = -ENOBUFS;
9718  free_msg:
9719         nlmsg_free(msg);
9720         return err;
9721 }
9722
9723 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
9724                                             struct genl_info *info)
9725 {
9726         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9727         struct wireless_dev *wdev = info->user_ptr[1];
9728         u64 cookie;
9729
9730         if (!info->attrs[NL80211_ATTR_COOKIE])
9731                 return -EINVAL;
9732
9733         if (!rdev->ops->cancel_remain_on_channel)
9734                 return -EOPNOTSUPP;
9735
9736         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
9737
9738         return rdev_cancel_remain_on_channel(rdev, wdev, cookie);
9739 }
9740
9741 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
9742                                        struct genl_info *info)
9743 {
9744         struct cfg80211_bitrate_mask mask;
9745         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9746         struct net_device *dev = info->user_ptr[1];
9747         int err;
9748
9749         if (!rdev->ops->set_bitrate_mask)
9750                 return -EOPNOTSUPP;
9751
9752         err = nl80211_parse_tx_bitrate_mask(info, &mask);
9753         if (err)
9754                 return err;
9755
9756         return rdev_set_bitrate_mask(rdev, dev, NULL, &mask);
9757 }
9758
9759 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
9760 {
9761         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9762         struct wireless_dev *wdev = info->user_ptr[1];
9763         u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
9764
9765         if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
9766                 return -EINVAL;
9767
9768         if (info->attrs[NL80211_ATTR_FRAME_TYPE])
9769                 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
9770
9771         switch (wdev->iftype) {
9772         case NL80211_IFTYPE_STATION:
9773         case NL80211_IFTYPE_ADHOC:
9774         case NL80211_IFTYPE_P2P_CLIENT:
9775         case NL80211_IFTYPE_AP:
9776         case NL80211_IFTYPE_AP_VLAN:
9777         case NL80211_IFTYPE_MESH_POINT:
9778         case NL80211_IFTYPE_P2P_GO:
9779         case NL80211_IFTYPE_P2P_DEVICE:
9780                 break;
9781         case NL80211_IFTYPE_NAN:
9782         default:
9783                 return -EOPNOTSUPP;
9784         }
9785
9786         /* not much point in registering if we can't reply */
9787         if (!rdev->ops->mgmt_tx)
9788                 return -EOPNOTSUPP;
9789
9790         return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type,
9791                         nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
9792                         nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]));
9793 }
9794
9795 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
9796 {
9797         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9798         struct wireless_dev *wdev = info->user_ptr[1];
9799         struct cfg80211_chan_def chandef;
9800         int err;
9801         void *hdr = NULL;
9802         u64 cookie;
9803         struct sk_buff *msg = NULL;
9804         struct cfg80211_mgmt_tx_params params = {
9805                 .dont_wait_for_ack =
9806                         info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK],
9807         };
9808
9809         if (!info->attrs[NL80211_ATTR_FRAME])
9810                 return -EINVAL;
9811
9812         if (!rdev->ops->mgmt_tx)
9813                 return -EOPNOTSUPP;
9814
9815         switch (wdev->iftype) {
9816         case NL80211_IFTYPE_P2P_DEVICE:
9817                 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
9818                         return -EINVAL;
9819         case NL80211_IFTYPE_STATION:
9820         case NL80211_IFTYPE_ADHOC:
9821         case NL80211_IFTYPE_P2P_CLIENT:
9822         case NL80211_IFTYPE_AP:
9823         case NL80211_IFTYPE_AP_VLAN:
9824         case NL80211_IFTYPE_MESH_POINT:
9825         case NL80211_IFTYPE_P2P_GO:
9826                 break;
9827         case NL80211_IFTYPE_NAN:
9828         default:
9829                 return -EOPNOTSUPP;
9830         }
9831
9832         if (info->attrs[NL80211_ATTR_DURATION]) {
9833                 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
9834                         return -EINVAL;
9835                 params.wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
9836
9837                 /*
9838                  * We should wait on the channel for at least a minimum amount
9839                  * of time (10ms) but no longer than the driver supports.
9840                  */
9841                 if (params.wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
9842                     params.wait > rdev->wiphy.max_remain_on_channel_duration)
9843                         return -EINVAL;
9844         }
9845
9846         params.offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
9847
9848         if (params.offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
9849                 return -EINVAL;
9850
9851         params.no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
9852
9853         /* get the channel if any has been specified, otherwise pass NULL to
9854          * the driver. The latter will use the current one
9855          */
9856         chandef.chan = NULL;
9857         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
9858                 err = nl80211_parse_chandef(rdev, info, &chandef);
9859                 if (err)
9860                         return err;
9861         }
9862
9863         if (!chandef.chan && params.offchan)
9864                 return -EINVAL;
9865
9866         wdev_lock(wdev);
9867         if (params.offchan && !cfg80211_off_channel_oper_allowed(wdev)) {
9868                 wdev_unlock(wdev);
9869                 return -EBUSY;
9870         }
9871         wdev_unlock(wdev);
9872
9873         params.buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
9874         params.len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
9875
9876         if (info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]) {
9877                 int len = nla_len(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
9878                 int i;
9879
9880                 if (len % sizeof(u16))
9881                         return -EINVAL;
9882
9883                 params.n_csa_offsets = len / sizeof(u16);
9884                 params.csa_offsets =
9885                         nla_data(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
9886
9887                 /* check that all the offsets fit the frame */
9888                 for (i = 0; i < params.n_csa_offsets; i++) {
9889                         if (params.csa_offsets[i] >= params.len)
9890                                 return -EINVAL;
9891                 }
9892         }
9893
9894         if (!params.dont_wait_for_ack) {
9895                 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9896                 if (!msg)
9897                         return -ENOMEM;
9898
9899                 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9900                                      NL80211_CMD_FRAME);
9901                 if (!hdr) {
9902                         err = -ENOBUFS;
9903                         goto free_msg;
9904                 }
9905         }
9906
9907         params.chan = chandef.chan;
9908         err = cfg80211_mlme_mgmt_tx(rdev, wdev, &params, &cookie);
9909         if (err)
9910                 goto free_msg;
9911
9912         if (msg) {
9913                 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
9914                                       NL80211_ATTR_PAD))
9915                         goto nla_put_failure;
9916
9917                 genlmsg_end(msg, hdr);
9918                 return genlmsg_reply(msg, info);
9919         }
9920
9921         return 0;
9922
9923  nla_put_failure:
9924         err = -ENOBUFS;
9925  free_msg:
9926         nlmsg_free(msg);
9927         return err;
9928 }
9929
9930 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
9931 {
9932         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9933         struct wireless_dev *wdev = info->user_ptr[1];
9934         u64 cookie;
9935
9936         if (!info->attrs[NL80211_ATTR_COOKIE])
9937                 return -EINVAL;
9938
9939         if (!rdev->ops->mgmt_tx_cancel_wait)
9940                 return -EOPNOTSUPP;
9941
9942         switch (wdev->iftype) {
9943         case NL80211_IFTYPE_STATION:
9944         case NL80211_IFTYPE_ADHOC:
9945         case NL80211_IFTYPE_P2P_CLIENT:
9946         case NL80211_IFTYPE_AP:
9947         case NL80211_IFTYPE_AP_VLAN:
9948         case NL80211_IFTYPE_P2P_GO:
9949         case NL80211_IFTYPE_P2P_DEVICE:
9950                 break;
9951         case NL80211_IFTYPE_NAN:
9952         default:
9953                 return -EOPNOTSUPP;
9954         }
9955
9956         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
9957
9958         return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie);
9959 }
9960
9961 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
9962 {
9963         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9964         struct wireless_dev *wdev;
9965         struct net_device *dev = info->user_ptr[1];
9966         u8 ps_state;
9967         bool state;
9968         int err;
9969
9970         if (!info->attrs[NL80211_ATTR_PS_STATE])
9971                 return -EINVAL;
9972
9973         ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
9974
9975         if (ps_state != NL80211_PS_DISABLED && ps_state != NL80211_PS_ENABLED)
9976                 return -EINVAL;
9977
9978         wdev = dev->ieee80211_ptr;
9979
9980         if (!rdev->ops->set_power_mgmt)
9981                 return -EOPNOTSUPP;
9982
9983         state = (ps_state == NL80211_PS_ENABLED) ? true : false;
9984
9985         if (state == wdev->ps)
9986                 return 0;
9987
9988         err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout);
9989         if (!err)
9990                 wdev->ps = state;
9991         return err;
9992 }
9993
9994 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
9995 {
9996         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9997         enum nl80211_ps_state ps_state;
9998         struct wireless_dev *wdev;
9999         struct net_device *dev = info->user_ptr[1];
10000         struct sk_buff *msg;
10001         void *hdr;
10002         int err;
10003
10004         wdev = dev->ieee80211_ptr;
10005
10006         if (!rdev->ops->set_power_mgmt)
10007                 return -EOPNOTSUPP;
10008
10009         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10010         if (!msg)
10011                 return -ENOMEM;
10012
10013         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
10014                              NL80211_CMD_GET_POWER_SAVE);
10015         if (!hdr) {
10016                 err = -ENOBUFS;
10017                 goto free_msg;
10018         }
10019
10020         if (wdev->ps)
10021                 ps_state = NL80211_PS_ENABLED;
10022         else
10023                 ps_state = NL80211_PS_DISABLED;
10024
10025         if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state))
10026                 goto nla_put_failure;
10027
10028         genlmsg_end(msg, hdr);
10029         return genlmsg_reply(msg, info);
10030
10031  nla_put_failure:
10032         err = -ENOBUFS;
10033  free_msg:
10034         nlmsg_free(msg);
10035         return err;
10036 }
10037
10038 static const struct nla_policy
10039 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] = {
10040         [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_BINARY },
10041         [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
10042         [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
10043         [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 },
10044         [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 },
10045         [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 },
10046         [NL80211_ATTR_CQM_RSSI_LEVEL] = { .type = NLA_S32 },
10047 };
10048
10049 static int nl80211_set_cqm_txe(struct genl_info *info,
10050                                u32 rate, u32 pkts, u32 intvl)
10051 {
10052         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10053         struct net_device *dev = info->user_ptr[1];
10054         struct wireless_dev *wdev = dev->ieee80211_ptr;
10055
10056         if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL)
10057                 return -EINVAL;
10058
10059         if (!rdev->ops->set_cqm_txe_config)
10060                 return -EOPNOTSUPP;
10061
10062         if (wdev->iftype != NL80211_IFTYPE_STATION &&
10063             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
10064                 return -EOPNOTSUPP;
10065
10066         return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl);
10067 }
10068
10069 static int cfg80211_cqm_rssi_update(struct cfg80211_registered_device *rdev,
10070                                     struct net_device *dev)
10071 {
10072         struct wireless_dev *wdev = dev->ieee80211_ptr;
10073         s32 last, low, high;
10074         u32 hyst;
10075         int i, n;
10076         int err;
10077
10078         /* RSSI reporting disabled? */
10079         if (!wdev->cqm_config)
10080                 return rdev_set_cqm_rssi_range_config(rdev, dev, 0, 0);
10081
10082         /*
10083          * Obtain current RSSI value if possible, if not and no RSSI threshold
10084          * event has been received yet, we should receive an event after a
10085          * connection is established and enough beacons received to calculate
10086          * the average.
10087          */
10088         if (!wdev->cqm_config->last_rssi_event_value && wdev->current_bss &&
10089             rdev->ops->get_station) {
10090                 struct station_info *sinfo;
10091                 u8 *mac_addr;
10092
10093                 sinfo = kzalloc(sizeof(*sinfo), GFP_KERNEL);
10094                 if (!sinfo)
10095                         return -ENOMEM;
10096
10097                 mac_addr = wdev->current_bss->pub.bssid;
10098
10099                 err = rdev_get_station(rdev, dev, mac_addr, sinfo);
10100                 if (err) {
10101                         kfree(sinfo);
10102                         return err;
10103                 }
10104
10105                 if (sinfo->filled & BIT(NL80211_STA_INFO_BEACON_SIGNAL_AVG))
10106                         wdev->cqm_config->last_rssi_event_value =
10107                                 (s8)sinfo->rx_beacon_signal_avg;
10108
10109                 kfree(sinfo);
10110         }
10111
10112         last = wdev->cqm_config->last_rssi_event_value;
10113         hyst = wdev->cqm_config->rssi_hyst;
10114         n = wdev->cqm_config->n_rssi_thresholds;
10115
10116         for (i = 0; i < n; i++)
10117                 if (last < wdev->cqm_config->rssi_thresholds[i])
10118                         break;
10119
10120         low = i > 0 ?
10121                 (wdev->cqm_config->rssi_thresholds[i - 1] - hyst) : S32_MIN;
10122         high = i < n ?
10123                 (wdev->cqm_config->rssi_thresholds[i] + hyst - 1) : S32_MAX;
10124
10125         return rdev_set_cqm_rssi_range_config(rdev, dev, low, high);
10126 }
10127
10128 static int nl80211_set_cqm_rssi(struct genl_info *info,
10129                                 const s32 *thresholds, int n_thresholds,
10130                                 u32 hysteresis)
10131 {
10132         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10133         struct net_device *dev = info->user_ptr[1];
10134         struct wireless_dev *wdev = dev->ieee80211_ptr;
10135         int i, err;
10136         s32 prev = S32_MIN;
10137
10138         /* Check all values negative and sorted */
10139         for (i = 0; i < n_thresholds; i++) {
10140                 if (thresholds[i] > 0 || thresholds[i] <= prev)
10141                         return -EINVAL;
10142
10143                 prev = thresholds[i];
10144         }
10145
10146         if (wdev->iftype != NL80211_IFTYPE_STATION &&
10147             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
10148                 return -EOPNOTSUPP;
10149
10150         wdev_lock(wdev);
10151         cfg80211_cqm_config_free(wdev);
10152         wdev_unlock(wdev);
10153
10154         if (n_thresholds <= 1 && rdev->ops->set_cqm_rssi_config) {
10155                 if (n_thresholds == 0 || thresholds[0] == 0) /* Disabling */
10156                         return rdev_set_cqm_rssi_config(rdev, dev, 0, 0);
10157
10158                 return rdev_set_cqm_rssi_config(rdev, dev,
10159                                                 thresholds[0], hysteresis);
10160         }
10161
10162         if (!wiphy_ext_feature_isset(&rdev->wiphy,
10163                                      NL80211_EXT_FEATURE_CQM_RSSI_LIST))
10164                 return -EOPNOTSUPP;
10165
10166         if (n_thresholds == 1 && thresholds[0] == 0) /* Disabling */
10167                 n_thresholds = 0;
10168
10169         wdev_lock(wdev);
10170         if (n_thresholds) {
10171                 struct cfg80211_cqm_config *cqm_config;
10172
10173                 cqm_config = kzalloc(sizeof(struct cfg80211_cqm_config) +
10174                                      n_thresholds * sizeof(s32), GFP_KERNEL);
10175                 if (!cqm_config) {
10176                         err = -ENOMEM;
10177                         goto unlock;
10178                 }
10179
10180                 cqm_config->rssi_hyst = hysteresis;
10181                 cqm_config->n_rssi_thresholds = n_thresholds;
10182                 memcpy(cqm_config->rssi_thresholds, thresholds,
10183                        n_thresholds * sizeof(s32));
10184
10185                 wdev->cqm_config = cqm_config;
10186         }
10187
10188         err = cfg80211_cqm_rssi_update(rdev, dev);
10189
10190 unlock:
10191         wdev_unlock(wdev);
10192
10193         return err;
10194 }
10195
10196 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
10197 {
10198         struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
10199         struct nlattr *cqm;
10200         int err;
10201
10202         cqm = info->attrs[NL80211_ATTR_CQM];
10203         if (!cqm)
10204                 return -EINVAL;
10205
10206         err = nla_parse_nested(attrs, NL80211_ATTR_CQM_MAX, cqm,
10207                                nl80211_attr_cqm_policy, info->extack);
10208         if (err)
10209                 return err;
10210
10211         if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
10212             attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
10213                 const s32 *thresholds =
10214                         nla_data(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
10215                 int len = nla_len(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
10216                 u32 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
10217
10218                 if (len % 4)
10219                         return -EINVAL;
10220
10221                 return nl80211_set_cqm_rssi(info, thresholds, len / 4,
10222                                             hysteresis);
10223         }
10224
10225         if (attrs[NL80211_ATTR_CQM_TXE_RATE] &&
10226             attrs[NL80211_ATTR_CQM_TXE_PKTS] &&
10227             attrs[NL80211_ATTR_CQM_TXE_INTVL]) {
10228                 u32 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]);
10229                 u32 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]);
10230                 u32 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]);
10231
10232                 return nl80211_set_cqm_txe(info, rate, pkts, intvl);
10233         }
10234
10235         return -EINVAL;
10236 }
10237
10238 static int nl80211_join_ocb(struct sk_buff *skb, struct genl_info *info)
10239 {
10240         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10241         struct net_device *dev = info->user_ptr[1];
10242         struct ocb_setup setup = {};
10243         int err;
10244
10245         err = nl80211_parse_chandef(rdev, info, &setup.chandef);
10246         if (err)
10247                 return err;
10248
10249         return cfg80211_join_ocb(rdev, dev, &setup);
10250 }
10251
10252 static int nl80211_leave_ocb(struct sk_buff *skb, struct genl_info *info)
10253 {
10254         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10255         struct net_device *dev = info->user_ptr[1];
10256
10257         return cfg80211_leave_ocb(rdev, dev);
10258 }
10259
10260 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
10261 {
10262         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10263         struct net_device *dev = info->user_ptr[1];
10264         struct mesh_config cfg;
10265         struct mesh_setup setup;
10266         int err;
10267
10268         /* start with default */
10269         memcpy(&cfg, &default_mesh_config, sizeof(cfg));
10270         memcpy(&setup, &default_mesh_setup, sizeof(setup));
10271
10272         if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
10273                 /* and parse parameters if given */
10274                 err = nl80211_parse_mesh_config(info, &cfg, NULL);
10275                 if (err)
10276                         return err;
10277         }
10278
10279         if (!info->attrs[NL80211_ATTR_MESH_ID] ||
10280             !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
10281                 return -EINVAL;
10282
10283         setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
10284         setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
10285
10286         if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
10287             !nl80211_parse_mcast_rate(rdev, setup.mcast_rate,
10288                             nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
10289                         return -EINVAL;
10290
10291         if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
10292                 setup.beacon_interval =
10293                         nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
10294
10295                 err = cfg80211_validate_beacon_int(rdev,
10296                                                    NL80211_IFTYPE_MESH_POINT,
10297                                                    setup.beacon_interval);
10298                 if (err)
10299                         return err;
10300         }
10301
10302         if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
10303                 setup.dtim_period =
10304                         nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
10305                 if (setup.dtim_period < 1 || setup.dtim_period > 100)
10306                         return -EINVAL;
10307         }
10308
10309         if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
10310                 /* parse additional setup parameters if given */
10311                 err = nl80211_parse_mesh_setup(info, &setup);
10312                 if (err)
10313                         return err;
10314         }
10315
10316         if (setup.user_mpm)
10317                 cfg.auto_open_plinks = false;
10318
10319         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
10320                 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
10321                 if (err)
10322                         return err;
10323         } else {
10324                 /* __cfg80211_join_mesh() will sort it out */
10325                 setup.chandef.chan = NULL;
10326         }
10327
10328         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
10329                 u8 *rates = nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
10330                 int n_rates =
10331                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
10332                 struct ieee80211_supported_band *sband;
10333
10334                 if (!setup.chandef.chan)
10335                         return -EINVAL;
10336
10337                 sband = rdev->wiphy.bands[setup.chandef.chan->band];
10338
10339                 err = ieee80211_get_ratemask(sband, rates, n_rates,
10340                                              &setup.basic_rates);
10341                 if (err)
10342                         return err;
10343         }
10344
10345         if (info->attrs[NL80211_ATTR_TX_RATES]) {
10346                 err = nl80211_parse_tx_bitrate_mask(info, &setup.beacon_rate);
10347                 if (err)
10348                         return err;
10349
10350                 if (!setup.chandef.chan)
10351                         return -EINVAL;
10352
10353                 err = validate_beacon_tx_rate(rdev, setup.chandef.chan->band,
10354                                               &setup.beacon_rate);
10355                 if (err)
10356                         return err;
10357         }
10358
10359         setup.userspace_handles_dfs =
10360                 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
10361
10362         if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
10363                 int r = validate_pae_over_nl80211(rdev, info);
10364
10365                 if (r < 0)
10366                         return r;
10367
10368                 setup.control_port_over_nl80211 = true;
10369         }
10370
10371         wdev_lock(dev->ieee80211_ptr);
10372         err = __cfg80211_join_mesh(rdev, dev, &setup, &cfg);
10373         if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER])
10374                 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
10375         wdev_unlock(dev->ieee80211_ptr);
10376
10377         return err;
10378 }
10379
10380 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
10381 {
10382         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10383         struct net_device *dev = info->user_ptr[1];
10384
10385         return cfg80211_leave_mesh(rdev, dev);
10386 }
10387
10388 #ifdef CONFIG_PM
10389 static int nl80211_send_wowlan_patterns(struct sk_buff *msg,
10390                                         struct cfg80211_registered_device *rdev)
10391 {
10392         struct cfg80211_wowlan *wowlan = rdev->wiphy.wowlan_config;
10393         struct nlattr *nl_pats, *nl_pat;
10394         int i, pat_len;
10395
10396         if (!wowlan->n_patterns)
10397                 return 0;
10398
10399         nl_pats = nla_nest_start(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN);
10400         if (!nl_pats)
10401                 return -ENOBUFS;
10402
10403         for (i = 0; i < wowlan->n_patterns; i++) {
10404                 nl_pat = nla_nest_start(msg, i + 1);
10405                 if (!nl_pat)
10406                         return -ENOBUFS;
10407                 pat_len = wowlan->patterns[i].pattern_len;
10408                 if (nla_put(msg, NL80211_PKTPAT_MASK, DIV_ROUND_UP(pat_len, 8),
10409                             wowlan->patterns[i].mask) ||
10410                     nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
10411                             wowlan->patterns[i].pattern) ||
10412                     nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
10413                                 wowlan->patterns[i].pkt_offset))
10414                         return -ENOBUFS;
10415                 nla_nest_end(msg, nl_pat);
10416         }
10417         nla_nest_end(msg, nl_pats);
10418
10419         return 0;
10420 }
10421
10422 static int nl80211_send_wowlan_tcp(struct sk_buff *msg,
10423                                    struct cfg80211_wowlan_tcp *tcp)
10424 {
10425         struct nlattr *nl_tcp;
10426
10427         if (!tcp)
10428                 return 0;
10429
10430         nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
10431         if (!nl_tcp)
10432                 return -ENOBUFS;
10433
10434         if (nla_put_in_addr(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) ||
10435             nla_put_in_addr(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) ||
10436             nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) ||
10437             nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) ||
10438             nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) ||
10439             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
10440                     tcp->payload_len, tcp->payload) ||
10441             nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
10442                         tcp->data_interval) ||
10443             nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
10444                     tcp->wake_len, tcp->wake_data) ||
10445             nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK,
10446                     DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask))
10447                 return -ENOBUFS;
10448
10449         if (tcp->payload_seq.len &&
10450             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ,
10451                     sizeof(tcp->payload_seq), &tcp->payload_seq))
10452                 return -ENOBUFS;
10453
10454         if (tcp->payload_tok.len &&
10455             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
10456                     sizeof(tcp->payload_tok) + tcp->tokens_size,
10457                     &tcp->payload_tok))
10458                 return -ENOBUFS;
10459
10460         nla_nest_end(msg, nl_tcp);
10461
10462         return 0;
10463 }
10464
10465 static int nl80211_send_wowlan_nd(struct sk_buff *msg,
10466                                   struct cfg80211_sched_scan_request *req)
10467 {
10468         struct nlattr *nd, *freqs, *matches, *match, *scan_plans, *scan_plan;
10469         int i;
10470
10471         if (!req)
10472                 return 0;
10473
10474         nd = nla_nest_start(msg, NL80211_WOWLAN_TRIG_NET_DETECT);
10475         if (!nd)
10476                 return -ENOBUFS;
10477
10478         if (req->n_scan_plans == 1 &&
10479             nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_INTERVAL,
10480                         req->scan_plans[0].interval * 1000))
10481                 return -ENOBUFS;
10482
10483         if (nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_DELAY, req->delay))
10484                 return -ENOBUFS;
10485
10486         if (req->relative_rssi_set) {
10487                 struct nl80211_bss_select_rssi_adjust rssi_adjust;
10488
10489                 if (nla_put_s8(msg, NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI,
10490                                req->relative_rssi))
10491                         return -ENOBUFS;
10492
10493                 rssi_adjust.band = req->rssi_adjust.band;
10494                 rssi_adjust.delta = req->rssi_adjust.delta;
10495                 if (nla_put(msg, NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST,
10496                             sizeof(rssi_adjust), &rssi_adjust))
10497                         return -ENOBUFS;
10498         }
10499
10500         freqs = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
10501         if (!freqs)
10502                 return -ENOBUFS;
10503
10504         for (i = 0; i < req->n_channels; i++) {
10505                 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
10506                         return -ENOBUFS;
10507         }
10508
10509         nla_nest_end(msg, freqs);
10510
10511         if (req->n_match_sets) {
10512                 matches = nla_nest_start(msg, NL80211_ATTR_SCHED_SCAN_MATCH);
10513                 if (!matches)
10514                         return -ENOBUFS;
10515
10516                 for (i = 0; i < req->n_match_sets; i++) {
10517                         match = nla_nest_start(msg, i);
10518                         if (!match)
10519                                 return -ENOBUFS;
10520
10521                         if (nla_put(msg, NL80211_SCHED_SCAN_MATCH_ATTR_SSID,
10522                                     req->match_sets[i].ssid.ssid_len,
10523                                     req->match_sets[i].ssid.ssid))
10524                                 return -ENOBUFS;
10525                         nla_nest_end(msg, match);
10526                 }
10527                 nla_nest_end(msg, matches);
10528         }
10529
10530         scan_plans = nla_nest_start(msg, NL80211_ATTR_SCHED_SCAN_PLANS);
10531         if (!scan_plans)
10532                 return -ENOBUFS;
10533
10534         for (i = 0; i < req->n_scan_plans; i++) {
10535                 scan_plan = nla_nest_start(msg, i + 1);
10536                 if (!scan_plan)
10537                         return -ENOBUFS;
10538
10539                 if (!scan_plan ||
10540                     nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_INTERVAL,
10541                                 req->scan_plans[i].interval) ||
10542                     (req->scan_plans[i].iterations &&
10543                      nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_ITERATIONS,
10544                                  req->scan_plans[i].iterations)))
10545                         return -ENOBUFS;
10546                 nla_nest_end(msg, scan_plan);
10547         }
10548         nla_nest_end(msg, scan_plans);
10549
10550         nla_nest_end(msg, nd);
10551
10552         return 0;
10553 }
10554
10555 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
10556 {
10557         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10558         struct sk_buff *msg;
10559         void *hdr;
10560         u32 size = NLMSG_DEFAULT_SIZE;
10561
10562         if (!rdev->wiphy.wowlan)
10563                 return -EOPNOTSUPP;
10564
10565         if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) {
10566                 /* adjust size to have room for all the data */
10567                 size += rdev->wiphy.wowlan_config->tcp->tokens_size +
10568                         rdev->wiphy.wowlan_config->tcp->payload_len +
10569                         rdev->wiphy.wowlan_config->tcp->wake_len +
10570                         rdev->wiphy.wowlan_config->tcp->wake_len / 8;
10571         }
10572
10573         msg = nlmsg_new(size, GFP_KERNEL);
10574         if (!msg)
10575                 return -ENOMEM;
10576
10577         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
10578                              NL80211_CMD_GET_WOWLAN);
10579         if (!hdr)
10580                 goto nla_put_failure;
10581
10582         if (rdev->wiphy.wowlan_config) {
10583                 struct nlattr *nl_wowlan;
10584
10585                 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
10586                 if (!nl_wowlan)
10587                         goto nla_put_failure;
10588
10589                 if ((rdev->wiphy.wowlan_config->any &&
10590                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
10591                     (rdev->wiphy.wowlan_config->disconnect &&
10592                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
10593                     (rdev->wiphy.wowlan_config->magic_pkt &&
10594                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
10595                     (rdev->wiphy.wowlan_config->gtk_rekey_failure &&
10596                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
10597                     (rdev->wiphy.wowlan_config->eap_identity_req &&
10598                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
10599                     (rdev->wiphy.wowlan_config->four_way_handshake &&
10600                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
10601                     (rdev->wiphy.wowlan_config->rfkill_release &&
10602                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
10603                         goto nla_put_failure;
10604
10605                 if (nl80211_send_wowlan_patterns(msg, rdev))
10606                         goto nla_put_failure;
10607
10608                 if (nl80211_send_wowlan_tcp(msg,
10609                                             rdev->wiphy.wowlan_config->tcp))
10610                         goto nla_put_failure;
10611
10612                 if (nl80211_send_wowlan_nd(
10613                             msg,
10614                             rdev->wiphy.wowlan_config->nd_config))
10615                         goto nla_put_failure;
10616
10617                 nla_nest_end(msg, nl_wowlan);
10618         }
10619
10620         genlmsg_end(msg, hdr);
10621         return genlmsg_reply(msg, info);
10622
10623 nla_put_failure:
10624         nlmsg_free(msg);
10625         return -ENOBUFS;
10626 }
10627
10628 static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev,
10629                                     struct nlattr *attr,
10630                                     struct cfg80211_wowlan *trig)
10631 {
10632         struct nlattr *tb[NUM_NL80211_WOWLAN_TCP];
10633         struct cfg80211_wowlan_tcp *cfg;
10634         struct nl80211_wowlan_tcp_data_token *tok = NULL;
10635         struct nl80211_wowlan_tcp_data_seq *seq = NULL;
10636         u32 size;
10637         u32 data_size, wake_size, tokens_size = 0, wake_mask_size;
10638         int err, port;
10639
10640         if (!rdev->wiphy.wowlan->tcp)
10641                 return -EINVAL;
10642
10643         err = nla_parse_nested(tb, MAX_NL80211_WOWLAN_TCP, attr,
10644                                nl80211_wowlan_tcp_policy, NULL);
10645         if (err)
10646                 return err;
10647
10648         if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] ||
10649             !tb[NL80211_WOWLAN_TCP_DST_IPV4] ||
10650             !tb[NL80211_WOWLAN_TCP_DST_MAC] ||
10651             !tb[NL80211_WOWLAN_TCP_DST_PORT] ||
10652             !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] ||
10653             !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] ||
10654             !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] ||
10655             !tb[NL80211_WOWLAN_TCP_WAKE_MASK])
10656                 return -EINVAL;
10657
10658         data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]);
10659         if (data_size > rdev->wiphy.wowlan->tcp->data_payload_max)
10660                 return -EINVAL;
10661
10662         if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) >
10663                         rdev->wiphy.wowlan->tcp->data_interval_max ||
10664             nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0)
10665                 return -EINVAL;
10666
10667         wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]);
10668         if (wake_size > rdev->wiphy.wowlan->tcp->wake_payload_max)
10669                 return -EINVAL;
10670
10671         wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]);
10672         if (wake_mask_size != DIV_ROUND_UP(wake_size, 8))
10673                 return -EINVAL;
10674
10675         if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) {
10676                 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
10677
10678                 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
10679                 tokens_size = tokln - sizeof(*tok);
10680
10681                 if (!tok->len || tokens_size % tok->len)
10682                         return -EINVAL;
10683                 if (!rdev->wiphy.wowlan->tcp->tok)
10684                         return -EINVAL;
10685                 if (tok->len > rdev->wiphy.wowlan->tcp->tok->max_len)
10686                         return -EINVAL;
10687                 if (tok->len < rdev->wiphy.wowlan->tcp->tok->min_len)
10688                         return -EINVAL;
10689                 if (tokens_size > rdev->wiphy.wowlan->tcp->tok->bufsize)
10690                         return -EINVAL;
10691                 if (tok->offset + tok->len > data_size)
10692                         return -EINVAL;
10693         }
10694
10695         if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) {
10696                 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]);
10697                 if (!rdev->wiphy.wowlan->tcp->seq)
10698                         return -EINVAL;
10699                 if (seq->len == 0 || seq->len > 4)
10700                         return -EINVAL;
10701                 if (seq->len + seq->offset > data_size)
10702                         return -EINVAL;
10703         }
10704
10705         size = sizeof(*cfg);
10706         size += data_size;
10707         size += wake_size + wake_mask_size;
10708         size += tokens_size;
10709
10710         cfg = kzalloc(size, GFP_KERNEL);
10711         if (!cfg)
10712                 return -ENOMEM;
10713         cfg->src = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_SRC_IPV4]);
10714         cfg->dst = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_DST_IPV4]);
10715         memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]),
10716                ETH_ALEN);
10717         if (tb[NL80211_WOWLAN_TCP_SRC_PORT])
10718                 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]);
10719         else
10720                 port = 0;
10721 #ifdef CONFIG_INET
10722         /* allocate a socket and port for it and use it */
10723         err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM,
10724                             IPPROTO_TCP, &cfg->sock, 1);
10725         if (err) {
10726                 kfree(cfg);
10727                 return err;
10728         }
10729         if (inet_csk_get_port(cfg->sock->sk, port)) {
10730                 sock_release(cfg->sock);
10731                 kfree(cfg);
10732                 return -EADDRINUSE;
10733         }
10734         cfg->src_port = inet_sk(cfg->sock->sk)->inet_num;
10735 #else
10736         if (!port) {
10737                 kfree(cfg);
10738                 return -EINVAL;
10739         }
10740         cfg->src_port = port;
10741 #endif
10742
10743         cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]);
10744         cfg->payload_len = data_size;
10745         cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size;
10746         memcpy((void *)cfg->payload,
10747                nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]),
10748                data_size);
10749         if (seq)
10750                 cfg->payload_seq = *seq;
10751         cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]);
10752         cfg->wake_len = wake_size;
10753         cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size;
10754         memcpy((void *)cfg->wake_data,
10755                nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]),
10756                wake_size);
10757         cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size +
10758                          data_size + wake_size;
10759         memcpy((void *)cfg->wake_mask,
10760                nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]),
10761                wake_mask_size);
10762         if (tok) {
10763                 cfg->tokens_size = tokens_size;
10764                 memcpy(&cfg->payload_tok, tok, sizeof(*tok) + tokens_size);
10765         }
10766
10767         trig->tcp = cfg;
10768
10769         return 0;
10770 }
10771
10772 static int nl80211_parse_wowlan_nd(struct cfg80211_registered_device *rdev,
10773                                    const struct wiphy_wowlan_support *wowlan,
10774                                    struct nlattr *attr,
10775                                    struct cfg80211_wowlan *trig)
10776 {
10777         struct nlattr **tb;
10778         int err;
10779
10780         tb = kzalloc(NUM_NL80211_ATTR * sizeof(*tb), GFP_KERNEL);
10781         if (!tb)
10782                 return -ENOMEM;
10783
10784         if (!(wowlan->flags & WIPHY_WOWLAN_NET_DETECT)) {
10785                 err = -EOPNOTSUPP;
10786                 goto out;
10787         }
10788
10789         err = nla_parse_nested(tb, NL80211_ATTR_MAX, attr, nl80211_policy,
10790                                NULL);
10791         if (err)
10792                 goto out;
10793
10794         trig->nd_config = nl80211_parse_sched_scan(&rdev->wiphy, NULL, tb,
10795                                                    wowlan->max_nd_match_sets);
10796         err = PTR_ERR_OR_ZERO(trig->nd_config);
10797         if (err)
10798                 trig->nd_config = NULL;
10799
10800 out:
10801         kfree(tb);
10802         return err;
10803 }
10804
10805 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
10806 {
10807         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10808         struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
10809         struct cfg80211_wowlan new_triggers = {};
10810         struct cfg80211_wowlan *ntrig;
10811         const struct wiphy_wowlan_support *wowlan = rdev->wiphy.wowlan;
10812         int err, i;
10813         bool prev_enabled = rdev->wiphy.wowlan_config;
10814         bool regular = false;
10815
10816         if (!wowlan)
10817                 return -EOPNOTSUPP;
10818
10819         if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) {
10820                 cfg80211_rdev_free_wowlan(rdev);
10821                 rdev->wiphy.wowlan_config = NULL;
10822                 goto set_wakeup;
10823         }
10824
10825         err = nla_parse_nested(tb, MAX_NL80211_WOWLAN_TRIG,
10826                                info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS],
10827                                nl80211_wowlan_policy, info->extack);
10828         if (err)
10829                 return err;
10830
10831         if (tb[NL80211_WOWLAN_TRIG_ANY]) {
10832                 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
10833                         return -EINVAL;
10834                 new_triggers.any = true;
10835         }
10836
10837         if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
10838                 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
10839                         return -EINVAL;
10840                 new_triggers.disconnect = true;
10841                 regular = true;
10842         }
10843
10844         if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
10845                 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
10846                         return -EINVAL;
10847                 new_triggers.magic_pkt = true;
10848                 regular = true;
10849         }
10850
10851         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
10852                 return -EINVAL;
10853
10854         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
10855                 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
10856                         return -EINVAL;
10857                 new_triggers.gtk_rekey_failure = true;
10858                 regular = true;
10859         }
10860
10861         if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
10862                 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
10863                         return -EINVAL;
10864                 new_triggers.eap_identity_req = true;
10865                 regular = true;
10866         }
10867
10868         if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
10869                 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
10870                         return -EINVAL;
10871                 new_triggers.four_way_handshake = true;
10872                 regular = true;
10873         }
10874
10875         if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
10876                 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
10877                         return -EINVAL;
10878                 new_triggers.rfkill_release = true;
10879                 regular = true;
10880         }
10881
10882         if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
10883                 struct nlattr *pat;
10884                 int n_patterns = 0;
10885                 int rem, pat_len, mask_len, pkt_offset;
10886                 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
10887
10888                 regular = true;
10889
10890                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
10891                                     rem)
10892                         n_patterns++;
10893                 if (n_patterns > wowlan->n_patterns)
10894                         return -EINVAL;
10895
10896                 new_triggers.patterns = kcalloc(n_patterns,
10897                                                 sizeof(new_triggers.patterns[0]),
10898                                                 GFP_KERNEL);
10899                 if (!new_triggers.patterns)
10900                         return -ENOMEM;
10901
10902                 new_triggers.n_patterns = n_patterns;
10903                 i = 0;
10904
10905                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
10906                                     rem) {
10907                         u8 *mask_pat;
10908
10909                         nla_parse_nested(pat_tb, MAX_NL80211_PKTPAT, pat,
10910                                          nl80211_packet_pattern_policy,
10911                                          info->extack);
10912                         err = -EINVAL;
10913                         if (!pat_tb[NL80211_PKTPAT_MASK] ||
10914                             !pat_tb[NL80211_PKTPAT_PATTERN])
10915                                 goto error;
10916                         pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
10917                         mask_len = DIV_ROUND_UP(pat_len, 8);
10918                         if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
10919                                 goto error;
10920                         if (pat_len > wowlan->pattern_max_len ||
10921                             pat_len < wowlan->pattern_min_len)
10922                                 goto error;
10923
10924                         if (!pat_tb[NL80211_PKTPAT_OFFSET])
10925                                 pkt_offset = 0;
10926                         else
10927                                 pkt_offset = nla_get_u32(
10928                                         pat_tb[NL80211_PKTPAT_OFFSET]);
10929                         if (pkt_offset > wowlan->max_pkt_offset)
10930                                 goto error;
10931                         new_triggers.patterns[i].pkt_offset = pkt_offset;
10932
10933                         mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
10934                         if (!mask_pat) {
10935                                 err = -ENOMEM;
10936                                 goto error;
10937                         }
10938                         new_triggers.patterns[i].mask = mask_pat;
10939                         memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
10940                                mask_len);
10941                         mask_pat += mask_len;
10942                         new_triggers.patterns[i].pattern = mask_pat;
10943                         new_triggers.patterns[i].pattern_len = pat_len;
10944                         memcpy(mask_pat,
10945                                nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
10946                                pat_len);
10947                         i++;
10948                 }
10949         }
10950
10951         if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) {
10952                 regular = true;
10953                 err = nl80211_parse_wowlan_tcp(
10954                         rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION],
10955                         &new_triggers);
10956                 if (err)
10957                         goto error;
10958         }
10959
10960         if (tb[NL80211_WOWLAN_TRIG_NET_DETECT]) {
10961                 regular = true;
10962                 err = nl80211_parse_wowlan_nd(
10963                         rdev, wowlan, tb[NL80211_WOWLAN_TRIG_NET_DETECT],
10964                         &new_triggers);
10965                 if (err)
10966                         goto error;
10967         }
10968
10969         /* The 'any' trigger means the device continues operating more or less
10970          * as in its normal operation mode and wakes up the host on most of the
10971          * normal interrupts (like packet RX, ...)
10972          * It therefore makes little sense to combine with the more constrained
10973          * wakeup trigger modes.
10974          */
10975         if (new_triggers.any && regular) {
10976                 err = -EINVAL;
10977                 goto error;
10978         }
10979
10980         ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL);
10981         if (!ntrig) {
10982                 err = -ENOMEM;
10983                 goto error;
10984         }
10985         cfg80211_rdev_free_wowlan(rdev);
10986         rdev->wiphy.wowlan_config = ntrig;
10987
10988  set_wakeup:
10989         if (rdev->ops->set_wakeup &&
10990             prev_enabled != !!rdev->wiphy.wowlan_config)
10991                 rdev_set_wakeup(rdev, rdev->wiphy.wowlan_config);
10992
10993         return 0;
10994  error:
10995         for (i = 0; i < new_triggers.n_patterns; i++)
10996                 kfree(new_triggers.patterns[i].mask);
10997         kfree(new_triggers.patterns);
10998         if (new_triggers.tcp && new_triggers.tcp->sock)
10999                 sock_release(new_triggers.tcp->sock);
11000         kfree(new_triggers.tcp);
11001         kfree(new_triggers.nd_config);
11002         return err;
11003 }
11004 #endif
11005
11006 static int nl80211_send_coalesce_rules(struct sk_buff *msg,
11007                                        struct cfg80211_registered_device *rdev)
11008 {
11009         struct nlattr *nl_pats, *nl_pat, *nl_rule, *nl_rules;
11010         int i, j, pat_len;
11011         struct cfg80211_coalesce_rules *rule;
11012
11013         if (!rdev->coalesce->n_rules)
11014                 return 0;
11015
11016         nl_rules = nla_nest_start(msg, NL80211_ATTR_COALESCE_RULE);
11017         if (!nl_rules)
11018                 return -ENOBUFS;
11019
11020         for (i = 0; i < rdev->coalesce->n_rules; i++) {
11021                 nl_rule = nla_nest_start(msg, i + 1);
11022                 if (!nl_rule)
11023                         return -ENOBUFS;
11024
11025                 rule = &rdev->coalesce->rules[i];
11026                 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_DELAY,
11027                                 rule->delay))
11028                         return -ENOBUFS;
11029
11030                 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_CONDITION,
11031                                 rule->condition))
11032                         return -ENOBUFS;
11033
11034                 nl_pats = nla_nest_start(msg,
11035                                 NL80211_ATTR_COALESCE_RULE_PKT_PATTERN);
11036                 if (!nl_pats)
11037                         return -ENOBUFS;
11038
11039                 for (j = 0; j < rule->n_patterns; j++) {
11040                         nl_pat = nla_nest_start(msg, j + 1);
11041                         if (!nl_pat)
11042                                 return -ENOBUFS;
11043                         pat_len = rule->patterns[j].pattern_len;
11044                         if (nla_put(msg, NL80211_PKTPAT_MASK,
11045                                     DIV_ROUND_UP(pat_len, 8),
11046                                     rule->patterns[j].mask) ||
11047                             nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
11048                                     rule->patterns[j].pattern) ||
11049                             nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
11050                                         rule->patterns[j].pkt_offset))
11051                                 return -ENOBUFS;
11052                         nla_nest_end(msg, nl_pat);
11053                 }
11054                 nla_nest_end(msg, nl_pats);
11055                 nla_nest_end(msg, nl_rule);
11056         }
11057         nla_nest_end(msg, nl_rules);
11058
11059         return 0;
11060 }
11061
11062 static int nl80211_get_coalesce(struct sk_buff *skb, struct genl_info *info)
11063 {
11064         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11065         struct sk_buff *msg;
11066         void *hdr;
11067
11068         if (!rdev->wiphy.coalesce)
11069                 return -EOPNOTSUPP;
11070
11071         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11072         if (!msg)
11073                 return -ENOMEM;
11074
11075         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
11076                              NL80211_CMD_GET_COALESCE);
11077         if (!hdr)
11078                 goto nla_put_failure;
11079
11080         if (rdev->coalesce && nl80211_send_coalesce_rules(msg, rdev))
11081                 goto nla_put_failure;
11082
11083         genlmsg_end(msg, hdr);
11084         return genlmsg_reply(msg, info);
11085
11086 nla_put_failure:
11087         nlmsg_free(msg);
11088         return -ENOBUFS;
11089 }
11090
11091 void cfg80211_rdev_free_coalesce(struct cfg80211_registered_device *rdev)
11092 {
11093         struct cfg80211_coalesce *coalesce = rdev->coalesce;
11094         int i, j;
11095         struct cfg80211_coalesce_rules *rule;
11096
11097         if (!coalesce)
11098                 return;
11099
11100         for (i = 0; i < coalesce->n_rules; i++) {
11101                 rule = &coalesce->rules[i];
11102                 for (j = 0; j < rule->n_patterns; j++)
11103                         kfree(rule->patterns[j].mask);
11104                 kfree(rule->patterns);
11105         }
11106         kfree(coalesce->rules);
11107         kfree(coalesce);
11108         rdev->coalesce = NULL;
11109 }
11110
11111 static int nl80211_parse_coalesce_rule(struct cfg80211_registered_device *rdev,
11112                                        struct nlattr *rule,
11113                                        struct cfg80211_coalesce_rules *new_rule)
11114 {
11115         int err, i;
11116         const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
11117         struct nlattr *tb[NUM_NL80211_ATTR_COALESCE_RULE], *pat;
11118         int rem, pat_len, mask_len, pkt_offset, n_patterns = 0;
11119         struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
11120
11121         err = nla_parse_nested(tb, NL80211_ATTR_COALESCE_RULE_MAX, rule,
11122                                nl80211_coalesce_policy, NULL);
11123         if (err)
11124                 return err;
11125
11126         if (tb[NL80211_ATTR_COALESCE_RULE_DELAY])
11127                 new_rule->delay =
11128                         nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_DELAY]);
11129         if (new_rule->delay > coalesce->max_delay)
11130                 return -EINVAL;
11131
11132         if (tb[NL80211_ATTR_COALESCE_RULE_CONDITION])
11133                 new_rule->condition =
11134                         nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_CONDITION]);
11135         if (new_rule->condition != NL80211_COALESCE_CONDITION_MATCH &&
11136             new_rule->condition != NL80211_COALESCE_CONDITION_NO_MATCH)
11137                 return -EINVAL;
11138
11139         if (!tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN])
11140                 return -EINVAL;
11141
11142         nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
11143                             rem)
11144                 n_patterns++;
11145         if (n_patterns > coalesce->n_patterns)
11146                 return -EINVAL;
11147
11148         new_rule->patterns = kcalloc(n_patterns, sizeof(new_rule->patterns[0]),
11149                                      GFP_KERNEL);
11150         if (!new_rule->patterns)
11151                 return -ENOMEM;
11152
11153         new_rule->n_patterns = n_patterns;
11154         i = 0;
11155
11156         nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
11157                             rem) {
11158                 u8 *mask_pat;
11159
11160                 nla_parse_nested(pat_tb, MAX_NL80211_PKTPAT, pat,
11161                                  nl80211_packet_pattern_policy, NULL);
11162                 if (!pat_tb[NL80211_PKTPAT_MASK] ||
11163                     !pat_tb[NL80211_PKTPAT_PATTERN])
11164                         return -EINVAL;
11165                 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
11166                 mask_len = DIV_ROUND_UP(pat_len, 8);
11167                 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
11168                         return -EINVAL;
11169                 if (pat_len > coalesce->pattern_max_len ||
11170                     pat_len < coalesce->pattern_min_len)
11171                         return -EINVAL;
11172
11173                 if (!pat_tb[NL80211_PKTPAT_OFFSET])
11174                         pkt_offset = 0;
11175                 else
11176                         pkt_offset = nla_get_u32(pat_tb[NL80211_PKTPAT_OFFSET]);
11177                 if (pkt_offset > coalesce->max_pkt_offset)
11178                         return -EINVAL;
11179                 new_rule->patterns[i].pkt_offset = pkt_offset;
11180
11181                 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
11182                 if (!mask_pat)
11183                         return -ENOMEM;
11184
11185                 new_rule->patterns[i].mask = mask_pat;
11186                 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
11187                        mask_len);
11188
11189                 mask_pat += mask_len;
11190                 new_rule->patterns[i].pattern = mask_pat;
11191                 new_rule->patterns[i].pattern_len = pat_len;
11192                 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
11193                        pat_len);
11194                 i++;
11195         }
11196
11197         return 0;
11198 }
11199
11200 static int nl80211_set_coalesce(struct sk_buff *skb, struct genl_info *info)
11201 {
11202         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11203         const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
11204         struct cfg80211_coalesce new_coalesce = {};
11205         struct cfg80211_coalesce *n_coalesce;
11206         int err, rem_rule, n_rules = 0, i, j;
11207         struct nlattr *rule;
11208         struct cfg80211_coalesce_rules *tmp_rule;
11209
11210         if (!rdev->wiphy.coalesce || !rdev->ops->set_coalesce)
11211                 return -EOPNOTSUPP;
11212
11213         if (!info->attrs[NL80211_ATTR_COALESCE_RULE]) {
11214                 cfg80211_rdev_free_coalesce(rdev);
11215                 rdev_set_coalesce(rdev, NULL);
11216                 return 0;
11217         }
11218
11219         nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
11220                             rem_rule)
11221                 n_rules++;
11222         if (n_rules > coalesce->n_rules)
11223                 return -EINVAL;
11224
11225         new_coalesce.rules = kcalloc(n_rules, sizeof(new_coalesce.rules[0]),
11226                                      GFP_KERNEL);
11227         if (!new_coalesce.rules)
11228                 return -ENOMEM;
11229
11230         new_coalesce.n_rules = n_rules;
11231         i = 0;
11232
11233         nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
11234                             rem_rule) {
11235                 err = nl80211_parse_coalesce_rule(rdev, rule,
11236                                                   &new_coalesce.rules[i]);
11237                 if (err)
11238                         goto error;
11239
11240                 i++;
11241         }
11242
11243         err = rdev_set_coalesce(rdev, &new_coalesce);
11244         if (err)
11245                 goto error;
11246
11247         n_coalesce = kmemdup(&new_coalesce, sizeof(new_coalesce), GFP_KERNEL);
11248         if (!n_coalesce) {
11249                 err = -ENOMEM;
11250                 goto error;
11251         }
11252         cfg80211_rdev_free_coalesce(rdev);
11253         rdev->coalesce = n_coalesce;
11254
11255         return 0;
11256 error:
11257         for (i = 0; i < new_coalesce.n_rules; i++) {
11258                 tmp_rule = &new_coalesce.rules[i];
11259                 for (j = 0; j < tmp_rule->n_patterns; j++)
11260                         kfree(tmp_rule->patterns[j].mask);
11261                 kfree(tmp_rule->patterns);
11262         }
11263         kfree(new_coalesce.rules);
11264
11265         return err;
11266 }
11267
11268 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
11269 {
11270         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11271         struct net_device *dev = info->user_ptr[1];
11272         struct wireless_dev *wdev = dev->ieee80211_ptr;
11273         struct nlattr *tb[NUM_NL80211_REKEY_DATA];
11274         struct cfg80211_gtk_rekey_data rekey_data;
11275         int err;
11276
11277         if (!info->attrs[NL80211_ATTR_REKEY_DATA])
11278                 return -EINVAL;
11279
11280         err = nla_parse_nested(tb, MAX_NL80211_REKEY_DATA,
11281                                info->attrs[NL80211_ATTR_REKEY_DATA],
11282                                nl80211_rekey_policy, info->extack);
11283         if (err)
11284                 return err;
11285
11286         if (!tb[NL80211_REKEY_DATA_REPLAY_CTR] || !tb[NL80211_REKEY_DATA_KEK] ||
11287             !tb[NL80211_REKEY_DATA_KCK])
11288                 return -EINVAL;
11289         if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN)
11290                 return -ERANGE;
11291         if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN)
11292                 return -ERANGE;
11293         if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN)
11294                 return -ERANGE;
11295
11296         rekey_data.kek = nla_data(tb[NL80211_REKEY_DATA_KEK]);
11297         rekey_data.kck = nla_data(tb[NL80211_REKEY_DATA_KCK]);
11298         rekey_data.replay_ctr = nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]);
11299
11300         wdev_lock(wdev);
11301         if (!wdev->current_bss) {
11302                 err = -ENOTCONN;
11303                 goto out;
11304         }
11305
11306         if (!rdev->ops->set_rekey_data) {
11307                 err = -EOPNOTSUPP;
11308                 goto out;
11309         }
11310
11311         err = rdev_set_rekey_data(rdev, dev, &rekey_data);
11312  out:
11313         wdev_unlock(wdev);
11314         return err;
11315 }
11316
11317 static int nl80211_register_unexpected_frame(struct sk_buff *skb,
11318                                              struct genl_info *info)
11319 {
11320         struct net_device *dev = info->user_ptr[1];
11321         struct wireless_dev *wdev = dev->ieee80211_ptr;
11322
11323         if (wdev->iftype != NL80211_IFTYPE_AP &&
11324             wdev->iftype != NL80211_IFTYPE_P2P_GO)
11325                 return -EINVAL;
11326
11327         if (wdev->ap_unexpected_nlportid)
11328                 return -EBUSY;
11329
11330         wdev->ap_unexpected_nlportid = info->snd_portid;
11331         return 0;
11332 }
11333
11334 static int nl80211_probe_client(struct sk_buff *skb,
11335                                 struct genl_info *info)
11336 {
11337         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11338         struct net_device *dev = info->user_ptr[1];
11339         struct wireless_dev *wdev = dev->ieee80211_ptr;
11340         struct sk_buff *msg;
11341         void *hdr;
11342         const u8 *addr;
11343         u64 cookie;
11344         int err;
11345
11346         if (wdev->iftype != NL80211_IFTYPE_AP &&
11347             wdev->iftype != NL80211_IFTYPE_P2P_GO)
11348                 return -EOPNOTSUPP;
11349
11350         if (!info->attrs[NL80211_ATTR_MAC])
11351                 return -EINVAL;
11352
11353         if (!rdev->ops->probe_client)
11354                 return -EOPNOTSUPP;
11355
11356         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11357         if (!msg)
11358                 return -ENOMEM;
11359
11360         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
11361                              NL80211_CMD_PROBE_CLIENT);
11362         if (!hdr) {
11363                 err = -ENOBUFS;
11364                 goto free_msg;
11365         }
11366
11367         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
11368
11369         err = rdev_probe_client(rdev, dev, addr, &cookie);
11370         if (err)
11371                 goto free_msg;
11372
11373         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
11374                               NL80211_ATTR_PAD))
11375                 goto nla_put_failure;
11376
11377         genlmsg_end(msg, hdr);
11378
11379         return genlmsg_reply(msg, info);
11380
11381  nla_put_failure:
11382         err = -ENOBUFS;
11383  free_msg:
11384         nlmsg_free(msg);
11385         return err;
11386 }
11387
11388 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
11389 {
11390         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11391         struct cfg80211_beacon_registration *reg, *nreg;
11392         int rv;
11393
11394         if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS))
11395                 return -EOPNOTSUPP;
11396
11397         nreg = kzalloc(sizeof(*nreg), GFP_KERNEL);
11398         if (!nreg)
11399                 return -ENOMEM;
11400
11401         /* First, check if already registered. */
11402         spin_lock_bh(&rdev->beacon_registrations_lock);
11403         list_for_each_entry(reg, &rdev->beacon_registrations, list) {
11404                 if (reg->nlportid == info->snd_portid) {
11405                         rv = -EALREADY;
11406                         goto out_err;
11407                 }
11408         }
11409         /* Add it to the list */
11410         nreg->nlportid = info->snd_portid;
11411         list_add(&nreg->list, &rdev->beacon_registrations);
11412
11413         spin_unlock_bh(&rdev->beacon_registrations_lock);
11414
11415         return 0;
11416 out_err:
11417         spin_unlock_bh(&rdev->beacon_registrations_lock);
11418         kfree(nreg);
11419         return rv;
11420 }
11421
11422 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info)
11423 {
11424         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11425         struct wireless_dev *wdev = info->user_ptr[1];
11426         int err;
11427
11428         if (!rdev->ops->start_p2p_device)
11429                 return -EOPNOTSUPP;
11430
11431         if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
11432                 return -EOPNOTSUPP;
11433
11434         if (wdev_running(wdev))
11435                 return 0;
11436
11437         if (rfkill_blocked(rdev->rfkill))
11438                 return -ERFKILL;
11439
11440         err = rdev_start_p2p_device(rdev, wdev);
11441         if (err)
11442                 return err;
11443
11444         wdev->is_running = true;
11445         rdev->opencount++;
11446
11447         return 0;
11448 }
11449
11450 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info)
11451 {
11452         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11453         struct wireless_dev *wdev = info->user_ptr[1];
11454
11455         if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
11456                 return -EOPNOTSUPP;
11457
11458         if (!rdev->ops->stop_p2p_device)
11459                 return -EOPNOTSUPP;
11460
11461         cfg80211_stop_p2p_device(rdev, wdev);
11462
11463         return 0;
11464 }
11465
11466 static int nl80211_start_nan(struct sk_buff *skb, struct genl_info *info)
11467 {
11468         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11469         struct wireless_dev *wdev = info->user_ptr[1];
11470         struct cfg80211_nan_conf conf = {};
11471         int err;
11472
11473         if (wdev->iftype != NL80211_IFTYPE_NAN)
11474                 return -EOPNOTSUPP;
11475
11476         if (wdev_running(wdev))
11477                 return -EEXIST;
11478
11479         if (rfkill_blocked(rdev->rfkill))
11480                 return -ERFKILL;
11481
11482         if (!info->attrs[NL80211_ATTR_NAN_MASTER_PREF])
11483                 return -EINVAL;
11484
11485         conf.master_pref =
11486                 nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]);
11487         if (!conf.master_pref)
11488                 return -EINVAL;
11489
11490         if (info->attrs[NL80211_ATTR_BANDS]) {
11491                 u32 bands = nla_get_u32(info->attrs[NL80211_ATTR_BANDS]);
11492
11493                 if (bands & ~(u32)wdev->wiphy->nan_supported_bands)
11494                         return -EOPNOTSUPP;
11495
11496                 if (bands && !(bands & BIT(NL80211_BAND_2GHZ)))
11497                         return -EINVAL;
11498
11499                 conf.bands = bands;
11500         }
11501
11502         err = rdev_start_nan(rdev, wdev, &conf);
11503         if (err)
11504                 return err;
11505
11506         wdev->is_running = true;
11507         rdev->opencount++;
11508
11509         return 0;
11510 }
11511
11512 static int nl80211_stop_nan(struct sk_buff *skb, struct genl_info *info)
11513 {
11514         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11515         struct wireless_dev *wdev = info->user_ptr[1];
11516
11517         if (wdev->iftype != NL80211_IFTYPE_NAN)
11518                 return -EOPNOTSUPP;
11519
11520         cfg80211_stop_nan(rdev, wdev);
11521
11522         return 0;
11523 }
11524
11525 static int validate_nan_filter(struct nlattr *filter_attr)
11526 {
11527         struct nlattr *attr;
11528         int len = 0, n_entries = 0, rem;
11529
11530         nla_for_each_nested(attr, filter_attr, rem) {
11531                 len += nla_len(attr);
11532                 n_entries++;
11533         }
11534
11535         if (len >= U8_MAX)
11536                 return -EINVAL;
11537
11538         return n_entries;
11539 }
11540
11541 static int handle_nan_filter(struct nlattr *attr_filter,
11542                              struct cfg80211_nan_func *func,
11543                              bool tx)
11544 {
11545         struct nlattr *attr;
11546         int n_entries, rem, i;
11547         struct cfg80211_nan_func_filter *filter;
11548
11549         n_entries = validate_nan_filter(attr_filter);
11550         if (n_entries < 0)
11551                 return n_entries;
11552
11553         BUILD_BUG_ON(sizeof(*func->rx_filters) != sizeof(*func->tx_filters));
11554
11555         filter = kcalloc(n_entries, sizeof(*func->rx_filters), GFP_KERNEL);
11556         if (!filter)
11557                 return -ENOMEM;
11558
11559         i = 0;
11560         nla_for_each_nested(attr, attr_filter, rem) {
11561                 filter[i].filter = nla_memdup(attr, GFP_KERNEL);
11562                 filter[i].len = nla_len(attr);
11563                 i++;
11564         }
11565         if (tx) {
11566                 func->num_tx_filters = n_entries;
11567                 func->tx_filters = filter;
11568         } else {
11569                 func->num_rx_filters = n_entries;
11570                 func->rx_filters = filter;
11571         }
11572
11573         return 0;
11574 }
11575
11576 static int nl80211_nan_add_func(struct sk_buff *skb,
11577                                 struct genl_info *info)
11578 {
11579         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11580         struct wireless_dev *wdev = info->user_ptr[1];
11581         struct nlattr *tb[NUM_NL80211_NAN_FUNC_ATTR], *func_attr;
11582         struct cfg80211_nan_func *func;
11583         struct sk_buff *msg = NULL;
11584         void *hdr = NULL;
11585         int err = 0;
11586
11587         if (wdev->iftype != NL80211_IFTYPE_NAN)
11588                 return -EOPNOTSUPP;
11589
11590         if (!wdev_running(wdev))
11591                 return -ENOTCONN;
11592
11593         if (!info->attrs[NL80211_ATTR_NAN_FUNC])
11594                 return -EINVAL;
11595
11596         err = nla_parse_nested(tb, NL80211_NAN_FUNC_ATTR_MAX,
11597                                info->attrs[NL80211_ATTR_NAN_FUNC],
11598                                nl80211_nan_func_policy, info->extack);
11599         if (err)
11600                 return err;
11601
11602         func = kzalloc(sizeof(*func), GFP_KERNEL);
11603         if (!func)
11604                 return -ENOMEM;
11605
11606         func->cookie = wdev->wiphy->cookie_counter++;
11607
11608         if (!tb[NL80211_NAN_FUNC_TYPE] ||
11609             nla_get_u8(tb[NL80211_NAN_FUNC_TYPE]) > NL80211_NAN_FUNC_MAX_TYPE) {
11610                 err = -EINVAL;
11611                 goto out;
11612         }
11613
11614
11615         func->type = nla_get_u8(tb[NL80211_NAN_FUNC_TYPE]);
11616
11617         if (!tb[NL80211_NAN_FUNC_SERVICE_ID]) {
11618                 err = -EINVAL;
11619                 goto out;
11620         }
11621
11622         memcpy(func->service_id, nla_data(tb[NL80211_NAN_FUNC_SERVICE_ID]),
11623                sizeof(func->service_id));
11624
11625         func->close_range =
11626                 nla_get_flag(tb[NL80211_NAN_FUNC_CLOSE_RANGE]);
11627
11628         if (tb[NL80211_NAN_FUNC_SERVICE_INFO]) {
11629                 func->serv_spec_info_len =
11630                         nla_len(tb[NL80211_NAN_FUNC_SERVICE_INFO]);
11631                 func->serv_spec_info =
11632                         kmemdup(nla_data(tb[NL80211_NAN_FUNC_SERVICE_INFO]),
11633                                 func->serv_spec_info_len,
11634                                 GFP_KERNEL);
11635                 if (!func->serv_spec_info) {
11636                         err = -ENOMEM;
11637                         goto out;
11638                 }
11639         }
11640
11641         if (tb[NL80211_NAN_FUNC_TTL])
11642                 func->ttl = nla_get_u32(tb[NL80211_NAN_FUNC_TTL]);
11643
11644         switch (func->type) {
11645         case NL80211_NAN_FUNC_PUBLISH:
11646                 if (!tb[NL80211_NAN_FUNC_PUBLISH_TYPE]) {
11647                         err = -EINVAL;
11648                         goto out;
11649                 }
11650
11651                 func->publish_type =
11652                         nla_get_u8(tb[NL80211_NAN_FUNC_PUBLISH_TYPE]);
11653                 func->publish_bcast =
11654                         nla_get_flag(tb[NL80211_NAN_FUNC_PUBLISH_BCAST]);
11655
11656                 if ((!(func->publish_type & NL80211_NAN_SOLICITED_PUBLISH)) &&
11657                         func->publish_bcast) {
11658                         err = -EINVAL;
11659                         goto out;
11660                 }
11661                 break;
11662         case NL80211_NAN_FUNC_SUBSCRIBE:
11663                 func->subscribe_active =
11664                         nla_get_flag(tb[NL80211_NAN_FUNC_SUBSCRIBE_ACTIVE]);
11665                 break;
11666         case NL80211_NAN_FUNC_FOLLOW_UP:
11667                 if (!tb[NL80211_NAN_FUNC_FOLLOW_UP_ID] ||
11668                     !tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID] ||
11669                     !tb[NL80211_NAN_FUNC_FOLLOW_UP_DEST]) {
11670                         err = -EINVAL;
11671                         goto out;
11672                 }
11673
11674                 func->followup_id =
11675                         nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_ID]);
11676                 func->followup_reqid =
11677                         nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID]);
11678                 memcpy(func->followup_dest.addr,
11679                        nla_data(tb[NL80211_NAN_FUNC_FOLLOW_UP_DEST]),
11680                        sizeof(func->followup_dest.addr));
11681                 if (func->ttl) {
11682                         err = -EINVAL;
11683                         goto out;
11684                 }
11685                 break;
11686         default:
11687                 err = -EINVAL;
11688                 goto out;
11689         }
11690
11691         if (tb[NL80211_NAN_FUNC_SRF]) {
11692                 struct nlattr *srf_tb[NUM_NL80211_NAN_SRF_ATTR];
11693
11694                 err = nla_parse_nested(srf_tb, NL80211_NAN_SRF_ATTR_MAX,
11695                                        tb[NL80211_NAN_FUNC_SRF],
11696                                        nl80211_nan_srf_policy, info->extack);
11697                 if (err)
11698                         goto out;
11699
11700                 func->srf_include =
11701                         nla_get_flag(srf_tb[NL80211_NAN_SRF_INCLUDE]);
11702
11703                 if (srf_tb[NL80211_NAN_SRF_BF]) {
11704                         if (srf_tb[NL80211_NAN_SRF_MAC_ADDRS] ||
11705                             !srf_tb[NL80211_NAN_SRF_BF_IDX]) {
11706                                 err = -EINVAL;
11707                                 goto out;
11708                         }
11709
11710                         func->srf_bf_len =
11711                                 nla_len(srf_tb[NL80211_NAN_SRF_BF]);
11712                         func->srf_bf =
11713                                 kmemdup(nla_data(srf_tb[NL80211_NAN_SRF_BF]),
11714                                         func->srf_bf_len, GFP_KERNEL);
11715                         if (!func->srf_bf) {
11716                                 err = -ENOMEM;
11717                                 goto out;
11718                         }
11719
11720                         func->srf_bf_idx =
11721                                 nla_get_u8(srf_tb[NL80211_NAN_SRF_BF_IDX]);
11722                 } else {
11723                         struct nlattr *attr, *mac_attr =
11724                                 srf_tb[NL80211_NAN_SRF_MAC_ADDRS];
11725                         int n_entries, rem, i = 0;
11726
11727                         if (!mac_attr) {
11728                                 err = -EINVAL;
11729                                 goto out;
11730                         }
11731
11732                         n_entries = validate_acl_mac_addrs(mac_attr);
11733                         if (n_entries <= 0) {
11734                                 err = -EINVAL;
11735                                 goto out;
11736                         }
11737
11738                         func->srf_num_macs = n_entries;
11739                         func->srf_macs =
11740                                 kzalloc(sizeof(*func->srf_macs) * n_entries,
11741                                         GFP_KERNEL);
11742                         if (!func->srf_macs) {
11743                                 err = -ENOMEM;
11744                                 goto out;
11745                         }
11746
11747                         nla_for_each_nested(attr, mac_attr, rem)
11748                                 memcpy(func->srf_macs[i++].addr, nla_data(attr),
11749                                        sizeof(*func->srf_macs));
11750                 }
11751         }
11752
11753         if (tb[NL80211_NAN_FUNC_TX_MATCH_FILTER]) {
11754                 err = handle_nan_filter(tb[NL80211_NAN_FUNC_TX_MATCH_FILTER],
11755                                         func, true);
11756                 if (err)
11757                         goto out;
11758         }
11759
11760         if (tb[NL80211_NAN_FUNC_RX_MATCH_FILTER]) {
11761                 err = handle_nan_filter(tb[NL80211_NAN_FUNC_RX_MATCH_FILTER],
11762                                         func, false);
11763                 if (err)
11764                         goto out;
11765         }
11766
11767         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11768         if (!msg) {
11769                 err = -ENOMEM;
11770                 goto out;
11771         }
11772
11773         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
11774                              NL80211_CMD_ADD_NAN_FUNCTION);
11775         /* This can't really happen - we just allocated 4KB */
11776         if (WARN_ON(!hdr)) {
11777                 err = -ENOMEM;
11778                 goto out;
11779         }
11780
11781         err = rdev_add_nan_func(rdev, wdev, func);
11782 out:
11783         if (err < 0) {
11784                 cfg80211_free_nan_func(func);
11785                 nlmsg_free(msg);
11786                 return err;
11787         }
11788
11789         /* propagate the instance id and cookie to userspace  */
11790         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, func->cookie,
11791                               NL80211_ATTR_PAD))
11792                 goto nla_put_failure;
11793
11794         func_attr = nla_nest_start(msg, NL80211_ATTR_NAN_FUNC);
11795         if (!func_attr)
11796                 goto nla_put_failure;
11797
11798         if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID,
11799                        func->instance_id))
11800                 goto nla_put_failure;
11801
11802         nla_nest_end(msg, func_attr);
11803
11804         genlmsg_end(msg, hdr);
11805         return genlmsg_reply(msg, info);
11806
11807 nla_put_failure:
11808         nlmsg_free(msg);
11809         return -ENOBUFS;
11810 }
11811
11812 static int nl80211_nan_del_func(struct sk_buff *skb,
11813                                struct genl_info *info)
11814 {
11815         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11816         struct wireless_dev *wdev = info->user_ptr[1];
11817         u64 cookie;
11818
11819         if (wdev->iftype != NL80211_IFTYPE_NAN)
11820                 return -EOPNOTSUPP;
11821
11822         if (!wdev_running(wdev))
11823                 return -ENOTCONN;
11824
11825         if (!info->attrs[NL80211_ATTR_COOKIE])
11826                 return -EINVAL;
11827
11828         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
11829
11830         rdev_del_nan_func(rdev, wdev, cookie);
11831
11832         return 0;
11833 }
11834
11835 static int nl80211_nan_change_config(struct sk_buff *skb,
11836                                      struct genl_info *info)
11837 {
11838         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11839         struct wireless_dev *wdev = info->user_ptr[1];
11840         struct cfg80211_nan_conf conf = {};
11841         u32 changed = 0;
11842
11843         if (wdev->iftype != NL80211_IFTYPE_NAN)
11844                 return -EOPNOTSUPP;
11845
11846         if (!wdev_running(wdev))
11847                 return -ENOTCONN;
11848
11849         if (info->attrs[NL80211_ATTR_NAN_MASTER_PREF]) {
11850                 conf.master_pref =
11851                         nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]);
11852                 if (conf.master_pref <= 1 || conf.master_pref == 255)
11853                         return -EINVAL;
11854
11855                 changed |= CFG80211_NAN_CONF_CHANGED_PREF;
11856         }
11857
11858         if (info->attrs[NL80211_ATTR_BANDS]) {
11859                 u32 bands = nla_get_u32(info->attrs[NL80211_ATTR_BANDS]);
11860
11861                 if (bands & ~(u32)wdev->wiphy->nan_supported_bands)
11862                         return -EOPNOTSUPP;
11863
11864                 if (bands && !(bands & BIT(NL80211_BAND_2GHZ)))
11865                         return -EINVAL;
11866
11867                 conf.bands = bands;
11868                 changed |= CFG80211_NAN_CONF_CHANGED_BANDS;
11869         }
11870
11871         if (!changed)
11872                 return -EINVAL;
11873
11874         return rdev_nan_change_conf(rdev, wdev, &conf, changed);
11875 }
11876
11877 void cfg80211_nan_match(struct wireless_dev *wdev,
11878                         struct cfg80211_nan_match_params *match, gfp_t gfp)
11879 {
11880         struct wiphy *wiphy = wdev->wiphy;
11881         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11882         struct nlattr *match_attr, *local_func_attr, *peer_func_attr;
11883         struct sk_buff *msg;
11884         void *hdr;
11885
11886         if (WARN_ON(!match->inst_id || !match->peer_inst_id || !match->addr))
11887                 return;
11888
11889         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11890         if (!msg)
11891                 return;
11892
11893         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NAN_MATCH);
11894         if (!hdr) {
11895                 nlmsg_free(msg);
11896                 return;
11897         }
11898
11899         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11900             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11901                                          wdev->netdev->ifindex)) ||
11902             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
11903                               NL80211_ATTR_PAD))
11904                 goto nla_put_failure;
11905
11906         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, match->cookie,
11907                               NL80211_ATTR_PAD) ||
11908             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, match->addr))
11909                 goto nla_put_failure;
11910
11911         match_attr = nla_nest_start(msg, NL80211_ATTR_NAN_MATCH);
11912         if (!match_attr)
11913                 goto nla_put_failure;
11914
11915         local_func_attr = nla_nest_start(msg, NL80211_NAN_MATCH_FUNC_LOCAL);
11916         if (!local_func_attr)
11917                 goto nla_put_failure;
11918
11919         if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->inst_id))
11920                 goto nla_put_failure;
11921
11922         nla_nest_end(msg, local_func_attr);
11923
11924         peer_func_attr = nla_nest_start(msg, NL80211_NAN_MATCH_FUNC_PEER);
11925         if (!peer_func_attr)
11926                 goto nla_put_failure;
11927
11928         if (nla_put_u8(msg, NL80211_NAN_FUNC_TYPE, match->type) ||
11929             nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->peer_inst_id))
11930                 goto nla_put_failure;
11931
11932         if (match->info && match->info_len &&
11933             nla_put(msg, NL80211_NAN_FUNC_SERVICE_INFO, match->info_len,
11934                     match->info))
11935                 goto nla_put_failure;
11936
11937         nla_nest_end(msg, peer_func_attr);
11938         nla_nest_end(msg, match_attr);
11939         genlmsg_end(msg, hdr);
11940
11941         if (!wdev->owner_nlportid)
11942                 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
11943                                         msg, 0, NL80211_MCGRP_NAN, gfp);
11944         else
11945                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
11946                                 wdev->owner_nlportid);
11947
11948         return;
11949
11950 nla_put_failure:
11951         nlmsg_free(msg);
11952 }
11953 EXPORT_SYMBOL(cfg80211_nan_match);
11954
11955 void cfg80211_nan_func_terminated(struct wireless_dev *wdev,
11956                                   u8 inst_id,
11957                                   enum nl80211_nan_func_term_reason reason,
11958                                   u64 cookie, gfp_t gfp)
11959 {
11960         struct wiphy *wiphy = wdev->wiphy;
11961         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11962         struct sk_buff *msg;
11963         struct nlattr *func_attr;
11964         void *hdr;
11965
11966         if (WARN_ON(!inst_id))
11967                 return;
11968
11969         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11970         if (!msg)
11971                 return;
11972
11973         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_NAN_FUNCTION);
11974         if (!hdr) {
11975                 nlmsg_free(msg);
11976                 return;
11977         }
11978
11979         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11980             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11981                                          wdev->netdev->ifindex)) ||
11982             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
11983                               NL80211_ATTR_PAD))
11984                 goto nla_put_failure;
11985
11986         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
11987                               NL80211_ATTR_PAD))
11988                 goto nla_put_failure;
11989
11990         func_attr = nla_nest_start(msg, NL80211_ATTR_NAN_FUNC);
11991         if (!func_attr)
11992                 goto nla_put_failure;
11993
11994         if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, inst_id) ||
11995             nla_put_u8(msg, NL80211_NAN_FUNC_TERM_REASON, reason))
11996                 goto nla_put_failure;
11997
11998         nla_nest_end(msg, func_attr);
11999         genlmsg_end(msg, hdr);
12000
12001         if (!wdev->owner_nlportid)
12002                 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
12003                                         msg, 0, NL80211_MCGRP_NAN, gfp);
12004         else
12005                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
12006                                 wdev->owner_nlportid);
12007
12008         return;
12009
12010 nla_put_failure:
12011         nlmsg_free(msg);
12012 }
12013 EXPORT_SYMBOL(cfg80211_nan_func_terminated);
12014
12015 static int nl80211_get_protocol_features(struct sk_buff *skb,
12016                                          struct genl_info *info)
12017 {
12018         void *hdr;
12019         struct sk_buff *msg;
12020
12021         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12022         if (!msg)
12023                 return -ENOMEM;
12024
12025         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
12026                              NL80211_CMD_GET_PROTOCOL_FEATURES);
12027         if (!hdr)
12028                 goto nla_put_failure;
12029
12030         if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES,
12031                         NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP))
12032                 goto nla_put_failure;
12033
12034         genlmsg_end(msg, hdr);
12035         return genlmsg_reply(msg, info);
12036
12037  nla_put_failure:
12038         kfree_skb(msg);
12039         return -ENOBUFS;
12040 }
12041
12042 static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info)
12043 {
12044         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12045         struct cfg80211_update_ft_ies_params ft_params;
12046         struct net_device *dev = info->user_ptr[1];
12047
12048         if (!rdev->ops->update_ft_ies)
12049                 return -EOPNOTSUPP;
12050
12051         if (!info->attrs[NL80211_ATTR_MDID] ||
12052             !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
12053                 return -EINVAL;
12054
12055         memset(&ft_params, 0, sizeof(ft_params));
12056         ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]);
12057         ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
12058         ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
12059
12060         return rdev_update_ft_ies(rdev, dev, &ft_params);
12061 }
12062
12063 static int nl80211_crit_protocol_start(struct sk_buff *skb,
12064                                        struct genl_info *info)
12065 {
12066         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12067         struct wireless_dev *wdev = info->user_ptr[1];
12068         enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC;
12069         u16 duration;
12070         int ret;
12071
12072         if (!rdev->ops->crit_proto_start)
12073                 return -EOPNOTSUPP;
12074
12075         if (WARN_ON(!rdev->ops->crit_proto_stop))
12076                 return -EINVAL;
12077
12078         if (rdev->crit_proto_nlportid)
12079                 return -EBUSY;
12080
12081         /* determine protocol if provided */
12082         if (info->attrs[NL80211_ATTR_CRIT_PROT_ID])
12083                 proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]);
12084
12085         if (proto >= NUM_NL80211_CRIT_PROTO)
12086                 return -EINVAL;
12087
12088         /* timeout must be provided */
12089         if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION])
12090                 return -EINVAL;
12091
12092         duration =
12093                 nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]);
12094
12095         if (duration > NL80211_CRIT_PROTO_MAX_DURATION)
12096                 return -ERANGE;
12097
12098         ret = rdev_crit_proto_start(rdev, wdev, proto, duration);
12099         if (!ret)
12100                 rdev->crit_proto_nlportid = info->snd_portid;
12101
12102         return ret;
12103 }
12104
12105 static int nl80211_crit_protocol_stop(struct sk_buff *skb,
12106                                       struct genl_info *info)
12107 {
12108         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12109         struct wireless_dev *wdev = info->user_ptr[1];
12110
12111         if (!rdev->ops->crit_proto_stop)
12112                 return -EOPNOTSUPP;
12113
12114         if (rdev->crit_proto_nlportid) {
12115                 rdev->crit_proto_nlportid = 0;
12116                 rdev_crit_proto_stop(rdev, wdev);
12117         }
12118         return 0;
12119 }
12120
12121 static int nl80211_vendor_cmd(struct sk_buff *skb, struct genl_info *info)
12122 {
12123         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12124         struct wireless_dev *wdev =
12125                 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
12126         int i, err;
12127         u32 vid, subcmd;
12128
12129         if (!rdev->wiphy.vendor_commands)
12130                 return -EOPNOTSUPP;
12131
12132         if (IS_ERR(wdev)) {
12133                 err = PTR_ERR(wdev);
12134                 if (err != -EINVAL)
12135                         return err;
12136                 wdev = NULL;
12137         } else if (wdev->wiphy != &rdev->wiphy) {
12138                 return -EINVAL;
12139         }
12140
12141         if (!info->attrs[NL80211_ATTR_VENDOR_ID] ||
12142             !info->attrs[NL80211_ATTR_VENDOR_SUBCMD])
12143                 return -EINVAL;
12144
12145         vid = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_ID]);
12146         subcmd = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_SUBCMD]);
12147         for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
12148                 const struct wiphy_vendor_command *vcmd;
12149                 void *data = NULL;
12150                 int len = 0;
12151
12152                 vcmd = &rdev->wiphy.vendor_commands[i];
12153
12154                 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
12155                         continue;
12156
12157                 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
12158                                    WIPHY_VENDOR_CMD_NEED_NETDEV)) {
12159                         if (!wdev)
12160                                 return -EINVAL;
12161                         if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
12162                             !wdev->netdev)
12163                                 return -EINVAL;
12164
12165                         if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
12166                                 if (!wdev_running(wdev))
12167                                         return -ENETDOWN;
12168                         }
12169
12170                         if (!vcmd->doit)
12171                                 return -EOPNOTSUPP;
12172                 } else {
12173                         wdev = NULL;
12174                 }
12175
12176                 if (info->attrs[NL80211_ATTR_VENDOR_DATA]) {
12177                         data = nla_data(info->attrs[NL80211_ATTR_VENDOR_DATA]);
12178                         len = nla_len(info->attrs[NL80211_ATTR_VENDOR_DATA]);
12179                 }
12180
12181                 rdev->cur_cmd_info = info;
12182                 err = rdev->wiphy.vendor_commands[i].doit(&rdev->wiphy, wdev,
12183                                                           data, len);
12184                 rdev->cur_cmd_info = NULL;
12185                 return err;
12186         }
12187
12188         return -EOPNOTSUPP;
12189 }
12190
12191 static int nl80211_prepare_vendor_dump(struct sk_buff *skb,
12192                                        struct netlink_callback *cb,
12193                                        struct cfg80211_registered_device **rdev,
12194                                        struct wireless_dev **wdev)
12195 {
12196         struct nlattr **attrbuf = genl_family_attrbuf(&nl80211_fam);
12197         u32 vid, subcmd;
12198         unsigned int i;
12199         int vcmd_idx = -1;
12200         int err;
12201         void *data = NULL;
12202         unsigned int data_len = 0;
12203
12204         if (cb->args[0]) {
12205                 /* subtract the 1 again here */
12206                 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
12207                 struct wireless_dev *tmp;
12208
12209                 if (!wiphy)
12210                         return -ENODEV;
12211                 *rdev = wiphy_to_rdev(wiphy);
12212                 *wdev = NULL;
12213
12214                 if (cb->args[1]) {
12215                         list_for_each_entry(tmp, &wiphy->wdev_list, list) {
12216                                 if (tmp->identifier == cb->args[1] - 1) {
12217                                         *wdev = tmp;
12218                                         break;
12219                                 }
12220                         }
12221                 }
12222
12223                 /* keep rtnl locked in successful case */
12224                 return 0;
12225         }
12226
12227         err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize, attrbuf,
12228                           nl80211_fam.maxattr, nl80211_policy, NULL);
12229         if (err)
12230                 return err;
12231
12232         if (!attrbuf[NL80211_ATTR_VENDOR_ID] ||
12233             !attrbuf[NL80211_ATTR_VENDOR_SUBCMD])
12234                 return -EINVAL;
12235
12236         *wdev = __cfg80211_wdev_from_attrs(sock_net(skb->sk), attrbuf);
12237         if (IS_ERR(*wdev))
12238                 *wdev = NULL;
12239
12240         *rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf);
12241         if (IS_ERR(*rdev))
12242                 return PTR_ERR(*rdev);
12243
12244         vid = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_ID]);
12245         subcmd = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_SUBCMD]);
12246
12247         for (i = 0; i < (*rdev)->wiphy.n_vendor_commands; i++) {
12248                 const struct wiphy_vendor_command *vcmd;
12249
12250                 vcmd = &(*rdev)->wiphy.vendor_commands[i];
12251
12252                 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
12253                         continue;
12254
12255                 if (!vcmd->dumpit)
12256                         return -EOPNOTSUPP;
12257
12258                 vcmd_idx = i;
12259                 break;
12260         }
12261
12262         if (vcmd_idx < 0)
12263                 return -EOPNOTSUPP;
12264
12265         if (attrbuf[NL80211_ATTR_VENDOR_DATA]) {
12266                 data = nla_data(attrbuf[NL80211_ATTR_VENDOR_DATA]);
12267                 data_len = nla_len(attrbuf[NL80211_ATTR_VENDOR_DATA]);
12268         }
12269
12270         /* 0 is the first index - add 1 to parse only once */
12271         cb->args[0] = (*rdev)->wiphy_idx + 1;
12272         /* add 1 to know if it was NULL */
12273         cb->args[1] = *wdev ? (*wdev)->identifier + 1 : 0;
12274         cb->args[2] = vcmd_idx;
12275         cb->args[3] = (unsigned long)data;
12276         cb->args[4] = data_len;
12277
12278         /* keep rtnl locked in successful case */
12279         return 0;
12280 }
12281
12282 static int nl80211_vendor_cmd_dump(struct sk_buff *skb,
12283                                    struct netlink_callback *cb)
12284 {
12285         struct cfg80211_registered_device *rdev;
12286         struct wireless_dev *wdev;
12287         unsigned int vcmd_idx;
12288         const struct wiphy_vendor_command *vcmd;
12289         void *data;
12290         int data_len;
12291         int err;
12292         struct nlattr *vendor_data;
12293
12294         rtnl_lock();
12295         err = nl80211_prepare_vendor_dump(skb, cb, &rdev, &wdev);
12296         if (err)
12297                 goto out;
12298
12299         vcmd_idx = cb->args[2];
12300         data = (void *)cb->args[3];
12301         data_len = cb->args[4];
12302         vcmd = &rdev->wiphy.vendor_commands[vcmd_idx];
12303
12304         if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
12305                            WIPHY_VENDOR_CMD_NEED_NETDEV)) {
12306                 if (!wdev) {
12307                         err = -EINVAL;
12308                         goto out;
12309                 }
12310                 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
12311                     !wdev->netdev) {
12312                         err = -EINVAL;
12313                         goto out;
12314                 }
12315
12316                 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
12317                         if (!wdev_running(wdev)) {
12318                                 err = -ENETDOWN;
12319                                 goto out;
12320                         }
12321                 }
12322         }
12323
12324         while (1) {
12325                 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
12326                                            cb->nlh->nlmsg_seq, NLM_F_MULTI,
12327                                            NL80211_CMD_VENDOR);
12328                 if (!hdr)
12329                         break;
12330
12331                 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12332                     (wdev && nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
12333                                                wdev_id(wdev),
12334                                                NL80211_ATTR_PAD))) {
12335                         genlmsg_cancel(skb, hdr);
12336                         break;
12337                 }
12338
12339                 vendor_data = nla_nest_start(skb, NL80211_ATTR_VENDOR_DATA);
12340                 if (!vendor_data) {
12341                         genlmsg_cancel(skb, hdr);
12342                         break;
12343                 }
12344
12345                 err = vcmd->dumpit(&rdev->wiphy, wdev, skb, data, data_len,
12346                                    (unsigned long *)&cb->args[5]);
12347                 nla_nest_end(skb, vendor_data);
12348
12349                 if (err == -ENOBUFS || err == -ENOENT) {
12350                         genlmsg_cancel(skb, hdr);
12351                         break;
12352                 } else if (err) {
12353                         genlmsg_cancel(skb, hdr);
12354                         goto out;
12355                 }
12356
12357                 genlmsg_end(skb, hdr);
12358         }
12359
12360         err = skb->len;
12361  out:
12362         rtnl_unlock();
12363         return err;
12364 }
12365
12366 struct sk_buff *__cfg80211_alloc_reply_skb(struct wiphy *wiphy,
12367                                            enum nl80211_commands cmd,
12368                                            enum nl80211_attrs attr,
12369                                            int approxlen)
12370 {
12371         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12372
12373         if (WARN_ON(!rdev->cur_cmd_info))
12374                 return NULL;
12375
12376         return __cfg80211_alloc_vendor_skb(rdev, NULL, approxlen,
12377                                            rdev->cur_cmd_info->snd_portid,
12378                                            rdev->cur_cmd_info->snd_seq,
12379                                            cmd, attr, NULL, GFP_KERNEL);
12380 }
12381 EXPORT_SYMBOL(__cfg80211_alloc_reply_skb);
12382
12383 int cfg80211_vendor_cmd_reply(struct sk_buff *skb)
12384 {
12385         struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
12386         void *hdr = ((void **)skb->cb)[1];
12387         struct nlattr *data = ((void **)skb->cb)[2];
12388
12389         /* clear CB data for netlink core to own from now on */
12390         memset(skb->cb, 0, sizeof(skb->cb));
12391
12392         if (WARN_ON(!rdev->cur_cmd_info)) {
12393                 kfree_skb(skb);
12394                 return -EINVAL;
12395         }
12396
12397         nla_nest_end(skb, data);
12398         genlmsg_end(skb, hdr);
12399         return genlmsg_reply(skb, rdev->cur_cmd_info);
12400 }
12401 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_reply);
12402
12403 static int nl80211_set_qos_map(struct sk_buff *skb,
12404                                struct genl_info *info)
12405 {
12406         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12407         struct cfg80211_qos_map *qos_map = NULL;
12408         struct net_device *dev = info->user_ptr[1];
12409         u8 *pos, len, num_des, des_len, des;
12410         int ret;
12411
12412         if (!rdev->ops->set_qos_map)
12413                 return -EOPNOTSUPP;
12414
12415         if (info->attrs[NL80211_ATTR_QOS_MAP]) {
12416                 pos = nla_data(info->attrs[NL80211_ATTR_QOS_MAP]);
12417                 len = nla_len(info->attrs[NL80211_ATTR_QOS_MAP]);
12418
12419                 if (len % 2 || len < IEEE80211_QOS_MAP_LEN_MIN ||
12420                     len > IEEE80211_QOS_MAP_LEN_MAX)
12421                         return -EINVAL;
12422
12423                 qos_map = kzalloc(sizeof(struct cfg80211_qos_map), GFP_KERNEL);
12424                 if (!qos_map)
12425                         return -ENOMEM;
12426
12427                 num_des = (len - IEEE80211_QOS_MAP_LEN_MIN) >> 1;
12428                 if (num_des) {
12429                         des_len = num_des *
12430                                 sizeof(struct cfg80211_dscp_exception);
12431                         memcpy(qos_map->dscp_exception, pos, des_len);
12432                         qos_map->num_des = num_des;
12433                         for (des = 0; des < num_des; des++) {
12434                                 if (qos_map->dscp_exception[des].up > 7) {
12435                                         kfree(qos_map);
12436                                         return -EINVAL;
12437                                 }
12438                         }
12439                         pos += des_len;
12440                 }
12441                 memcpy(qos_map->up, pos, IEEE80211_QOS_MAP_LEN_MIN);
12442         }
12443
12444         wdev_lock(dev->ieee80211_ptr);
12445         ret = nl80211_key_allowed(dev->ieee80211_ptr);
12446         if (!ret)
12447                 ret = rdev_set_qos_map(rdev, dev, qos_map);
12448         wdev_unlock(dev->ieee80211_ptr);
12449
12450         kfree(qos_map);
12451         return ret;
12452 }
12453
12454 static int nl80211_add_tx_ts(struct sk_buff *skb, struct genl_info *info)
12455 {
12456         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12457         struct net_device *dev = info->user_ptr[1];
12458         struct wireless_dev *wdev = dev->ieee80211_ptr;
12459         const u8 *peer;
12460         u8 tsid, up;
12461         u16 admitted_time = 0;
12462         int err;
12463
12464         if (!(rdev->wiphy.features & NL80211_FEATURE_SUPPORTS_WMM_ADMISSION))
12465                 return -EOPNOTSUPP;
12466
12467         if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC] ||
12468             !info->attrs[NL80211_ATTR_USER_PRIO])
12469                 return -EINVAL;
12470
12471         tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
12472         if (tsid >= IEEE80211_NUM_TIDS)
12473                 return -EINVAL;
12474
12475         up = nla_get_u8(info->attrs[NL80211_ATTR_USER_PRIO]);
12476         if (up >= IEEE80211_NUM_UPS)
12477                 return -EINVAL;
12478
12479         /* WMM uses TIDs 0-7 even for TSPEC */
12480         if (tsid >= IEEE80211_FIRST_TSPEC_TSID) {
12481                 /* TODO: handle 802.11 TSPEC/admission control
12482                  * need more attributes for that (e.g. BA session requirement);
12483                  * change the WMM adminssion test above to allow both then
12484                  */
12485                 return -EINVAL;
12486         }
12487
12488         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
12489
12490         if (info->attrs[NL80211_ATTR_ADMITTED_TIME]) {
12491                 admitted_time =
12492                         nla_get_u16(info->attrs[NL80211_ATTR_ADMITTED_TIME]);
12493                 if (!admitted_time)
12494                         return -EINVAL;
12495         }
12496
12497         wdev_lock(wdev);
12498         switch (wdev->iftype) {
12499         case NL80211_IFTYPE_STATION:
12500         case NL80211_IFTYPE_P2P_CLIENT:
12501                 if (wdev->current_bss)
12502                         break;
12503                 err = -ENOTCONN;
12504                 goto out;
12505         default:
12506                 err = -EOPNOTSUPP;
12507                 goto out;
12508         }
12509
12510         err = rdev_add_tx_ts(rdev, dev, tsid, peer, up, admitted_time);
12511
12512  out:
12513         wdev_unlock(wdev);
12514         return err;
12515 }
12516
12517 static int nl80211_del_tx_ts(struct sk_buff *skb, struct genl_info *info)
12518 {
12519         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12520         struct net_device *dev = info->user_ptr[1];
12521         struct wireless_dev *wdev = dev->ieee80211_ptr;
12522         const u8 *peer;
12523         u8 tsid;
12524         int err;
12525
12526         if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC])
12527                 return -EINVAL;
12528
12529         tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
12530         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
12531
12532         wdev_lock(wdev);
12533         err = rdev_del_tx_ts(rdev, dev, tsid, peer);
12534         wdev_unlock(wdev);
12535
12536         return err;
12537 }
12538
12539 static int nl80211_tdls_channel_switch(struct sk_buff *skb,
12540                                        struct genl_info *info)
12541 {
12542         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12543         struct net_device *dev = info->user_ptr[1];
12544         struct wireless_dev *wdev = dev->ieee80211_ptr;
12545         struct cfg80211_chan_def chandef = {};
12546         const u8 *addr;
12547         u8 oper_class;
12548         int err;
12549
12550         if (!rdev->ops->tdls_channel_switch ||
12551             !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
12552                 return -EOPNOTSUPP;
12553
12554         switch (dev->ieee80211_ptr->iftype) {
12555         case NL80211_IFTYPE_STATION:
12556         case NL80211_IFTYPE_P2P_CLIENT:
12557                 break;
12558         default:
12559                 return -EOPNOTSUPP;
12560         }
12561
12562         if (!info->attrs[NL80211_ATTR_MAC] ||
12563             !info->attrs[NL80211_ATTR_OPER_CLASS])
12564                 return -EINVAL;
12565
12566         err = nl80211_parse_chandef(rdev, info, &chandef);
12567         if (err)
12568                 return err;
12569
12570         /*
12571          * Don't allow wide channels on the 2.4Ghz band, as per IEEE802.11-2012
12572          * section 10.22.6.2.1. Disallow 5/10Mhz channels as well for now, the
12573          * specification is not defined for them.
12574          */
12575         if (chandef.chan->band == NL80211_BAND_2GHZ &&
12576             chandef.width != NL80211_CHAN_WIDTH_20_NOHT &&
12577             chandef.width != NL80211_CHAN_WIDTH_20)
12578                 return -EINVAL;
12579
12580         /* we will be active on the TDLS link */
12581         if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
12582                                            wdev->iftype))
12583                 return -EINVAL;
12584
12585         /* don't allow switching to DFS channels */
12586         if (cfg80211_chandef_dfs_required(wdev->wiphy, &chandef, wdev->iftype))
12587                 return -EINVAL;
12588
12589         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
12590         oper_class = nla_get_u8(info->attrs[NL80211_ATTR_OPER_CLASS]);
12591
12592         wdev_lock(wdev);
12593         err = rdev_tdls_channel_switch(rdev, dev, addr, oper_class, &chandef);
12594         wdev_unlock(wdev);
12595
12596         return err;
12597 }
12598
12599 static int nl80211_tdls_cancel_channel_switch(struct sk_buff *skb,
12600                                               struct genl_info *info)
12601 {
12602         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12603         struct net_device *dev = info->user_ptr[1];
12604         struct wireless_dev *wdev = dev->ieee80211_ptr;
12605         const u8 *addr;
12606
12607         if (!rdev->ops->tdls_channel_switch ||
12608             !rdev->ops->tdls_cancel_channel_switch ||
12609             !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
12610                 return -EOPNOTSUPP;
12611
12612         switch (dev->ieee80211_ptr->iftype) {
12613         case NL80211_IFTYPE_STATION:
12614         case NL80211_IFTYPE_P2P_CLIENT:
12615                 break;
12616         default:
12617                 return -EOPNOTSUPP;
12618         }
12619
12620         if (!info->attrs[NL80211_ATTR_MAC])
12621                 return -EINVAL;
12622
12623         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
12624
12625         wdev_lock(wdev);
12626         rdev_tdls_cancel_channel_switch(rdev, dev, addr);
12627         wdev_unlock(wdev);
12628
12629         return 0;
12630 }
12631
12632 static int nl80211_set_multicast_to_unicast(struct sk_buff *skb,
12633                                             struct genl_info *info)
12634 {
12635         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12636         struct net_device *dev = info->user_ptr[1];
12637         struct wireless_dev *wdev = dev->ieee80211_ptr;
12638         const struct nlattr *nla;
12639         bool enabled;
12640
12641         if (!rdev->ops->set_multicast_to_unicast)
12642                 return -EOPNOTSUPP;
12643
12644         if (wdev->iftype != NL80211_IFTYPE_AP &&
12645             wdev->iftype != NL80211_IFTYPE_P2P_GO)
12646                 return -EOPNOTSUPP;
12647
12648         nla = info->attrs[NL80211_ATTR_MULTICAST_TO_UNICAST_ENABLED];
12649         enabled = nla_get_flag(nla);
12650
12651         return rdev_set_multicast_to_unicast(rdev, dev, enabled);
12652 }
12653
12654 static int nl80211_set_pmk(struct sk_buff *skb, struct genl_info *info)
12655 {
12656         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12657         struct net_device *dev = info->user_ptr[1];
12658         struct wireless_dev *wdev = dev->ieee80211_ptr;
12659         struct cfg80211_pmk_conf pmk_conf = {};
12660         int ret;
12661
12662         if (wdev->iftype != NL80211_IFTYPE_STATION &&
12663             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
12664                 return -EOPNOTSUPP;
12665
12666         if (!wiphy_ext_feature_isset(&rdev->wiphy,
12667                                      NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
12668                 return -EOPNOTSUPP;
12669
12670         if (!info->attrs[NL80211_ATTR_MAC] || !info->attrs[NL80211_ATTR_PMK])
12671                 return -EINVAL;
12672
12673         wdev_lock(wdev);
12674         if (!wdev->current_bss) {
12675                 ret = -ENOTCONN;
12676                 goto out;
12677         }
12678
12679         pmk_conf.aa = nla_data(info->attrs[NL80211_ATTR_MAC]);
12680         if (memcmp(pmk_conf.aa, wdev->current_bss->pub.bssid, ETH_ALEN)) {
12681                 ret = -EINVAL;
12682                 goto out;
12683         }
12684
12685         pmk_conf.pmk = nla_data(info->attrs[NL80211_ATTR_PMK]);
12686         pmk_conf.pmk_len = nla_len(info->attrs[NL80211_ATTR_PMK]);
12687         if (pmk_conf.pmk_len != WLAN_PMK_LEN &&
12688             pmk_conf.pmk_len != WLAN_PMK_LEN_SUITE_B_192) {
12689                 ret = -EINVAL;
12690                 goto out;
12691         }
12692
12693         if (info->attrs[NL80211_ATTR_PMKR0_NAME]) {
12694                 int r0_name_len = nla_len(info->attrs[NL80211_ATTR_PMKR0_NAME]);
12695
12696                 if (r0_name_len != WLAN_PMK_NAME_LEN) {
12697                         ret = -EINVAL;
12698                         goto out;
12699                 }
12700
12701                 pmk_conf.pmk_r0_name =
12702                         nla_data(info->attrs[NL80211_ATTR_PMKR0_NAME]);
12703         }
12704
12705         ret = rdev_set_pmk(rdev, dev, &pmk_conf);
12706 out:
12707         wdev_unlock(wdev);
12708         return ret;
12709 }
12710
12711 static int nl80211_del_pmk(struct sk_buff *skb, struct genl_info *info)
12712 {
12713         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12714         struct net_device *dev = info->user_ptr[1];
12715         struct wireless_dev *wdev = dev->ieee80211_ptr;
12716         const u8 *aa;
12717         int ret;
12718
12719         if (wdev->iftype != NL80211_IFTYPE_STATION &&
12720             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
12721                 return -EOPNOTSUPP;
12722
12723         if (!wiphy_ext_feature_isset(&rdev->wiphy,
12724                                      NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
12725                 return -EOPNOTSUPP;
12726
12727         if (!info->attrs[NL80211_ATTR_MAC])
12728                 return -EINVAL;
12729
12730         wdev_lock(wdev);
12731         aa = nla_data(info->attrs[NL80211_ATTR_MAC]);
12732         ret = rdev_del_pmk(rdev, dev, aa);
12733         wdev_unlock(wdev);
12734
12735         return ret;
12736 }
12737
12738 static int nl80211_external_auth(struct sk_buff *skb, struct genl_info *info)
12739 {
12740         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12741         struct net_device *dev = info->user_ptr[1];
12742         struct cfg80211_external_auth_params params;
12743
12744         if (!rdev->ops->external_auth)
12745                 return -EOPNOTSUPP;
12746
12747         if (!info->attrs[NL80211_ATTR_SSID])
12748                 return -EINVAL;
12749
12750         if (!info->attrs[NL80211_ATTR_BSSID])
12751                 return -EINVAL;
12752
12753         if (!info->attrs[NL80211_ATTR_STATUS_CODE])
12754                 return -EINVAL;
12755
12756         memset(&params, 0, sizeof(params));
12757
12758         params.ssid.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
12759         if (params.ssid.ssid_len == 0 ||
12760             params.ssid.ssid_len > IEEE80211_MAX_SSID_LEN)
12761                 return -EINVAL;
12762         memcpy(params.ssid.ssid, nla_data(info->attrs[NL80211_ATTR_SSID]),
12763                params.ssid.ssid_len);
12764
12765         memcpy(params.bssid, nla_data(info->attrs[NL80211_ATTR_BSSID]),
12766                ETH_ALEN);
12767
12768         params.status = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
12769
12770         return rdev_external_auth(rdev, dev, &params);
12771 }
12772
12773 static int nl80211_tx_control_port(struct sk_buff *skb, struct genl_info *info)
12774 {
12775         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12776         struct net_device *dev = info->user_ptr[1];
12777         struct wireless_dev *wdev = dev->ieee80211_ptr;
12778         const u8 *buf;
12779         size_t len;
12780         u8 *dest;
12781         u16 proto;
12782         bool noencrypt;
12783         int err;
12784
12785         if (!wiphy_ext_feature_isset(&rdev->wiphy,
12786                                      NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211))
12787                 return -EOPNOTSUPP;
12788
12789         if (!rdev->ops->tx_control_port)
12790                 return -EOPNOTSUPP;
12791
12792         if (!info->attrs[NL80211_ATTR_FRAME] ||
12793             !info->attrs[NL80211_ATTR_MAC] ||
12794             !info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
12795                 GENL_SET_ERR_MSG(info, "Frame, MAC or ethertype missing");
12796                 return -EINVAL;
12797         }
12798
12799         wdev_lock(wdev);
12800
12801         switch (wdev->iftype) {
12802         case NL80211_IFTYPE_AP:
12803         case NL80211_IFTYPE_P2P_GO:
12804         case NL80211_IFTYPE_MESH_POINT:
12805                 break;
12806         case NL80211_IFTYPE_ADHOC:
12807         case NL80211_IFTYPE_STATION:
12808         case NL80211_IFTYPE_P2P_CLIENT:
12809                 if (wdev->current_bss)
12810                         break;
12811                 err = -ENOTCONN;
12812                 goto out;
12813         default:
12814                 err = -EOPNOTSUPP;
12815                 goto out;
12816         }
12817
12818         wdev_unlock(wdev);
12819
12820         buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
12821         len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
12822         dest = nla_data(info->attrs[NL80211_ATTR_MAC]);
12823         proto = nla_get_u16(info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
12824         noencrypt =
12825                 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT]);
12826
12827         return rdev_tx_control_port(rdev, dev, buf, len,
12828                                     dest, cpu_to_be16(proto), noencrypt);
12829
12830  out:
12831         wdev_unlock(wdev);
12832         return err;
12833 }
12834
12835 #define NL80211_FLAG_NEED_WIPHY         0x01
12836 #define NL80211_FLAG_NEED_NETDEV        0x02
12837 #define NL80211_FLAG_NEED_RTNL          0x04
12838 #define NL80211_FLAG_CHECK_NETDEV_UP    0x08
12839 #define NL80211_FLAG_NEED_NETDEV_UP     (NL80211_FLAG_NEED_NETDEV |\
12840                                          NL80211_FLAG_CHECK_NETDEV_UP)
12841 #define NL80211_FLAG_NEED_WDEV          0x10
12842 /* If a netdev is associated, it must be UP, P2P must be started */
12843 #define NL80211_FLAG_NEED_WDEV_UP       (NL80211_FLAG_NEED_WDEV |\
12844                                          NL80211_FLAG_CHECK_NETDEV_UP)
12845 #define NL80211_FLAG_CLEAR_SKB          0x20
12846
12847 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
12848                             struct genl_info *info)
12849 {
12850         struct cfg80211_registered_device *rdev;
12851         struct wireless_dev *wdev;
12852         struct net_device *dev;
12853         bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
12854
12855         if (rtnl)
12856                 rtnl_lock();
12857
12858         if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
12859                 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
12860                 if (IS_ERR(rdev)) {
12861                         if (rtnl)
12862                                 rtnl_unlock();
12863                         return PTR_ERR(rdev);
12864                 }
12865                 info->user_ptr[0] = rdev;
12866         } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV ||
12867                    ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
12868                 ASSERT_RTNL();
12869
12870                 wdev = __cfg80211_wdev_from_attrs(genl_info_net(info),
12871                                                   info->attrs);
12872                 if (IS_ERR(wdev)) {
12873                         if (rtnl)
12874                                 rtnl_unlock();
12875                         return PTR_ERR(wdev);
12876                 }
12877
12878                 dev = wdev->netdev;
12879                 rdev = wiphy_to_rdev(wdev->wiphy);
12880
12881                 if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
12882                         if (!dev) {
12883                                 if (rtnl)
12884                                         rtnl_unlock();
12885                                 return -EINVAL;
12886                         }
12887
12888                         info->user_ptr[1] = dev;
12889                 } else {
12890                         info->user_ptr[1] = wdev;
12891                 }
12892
12893                 if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
12894                     !wdev_running(wdev)) {
12895                         if (rtnl)
12896                                 rtnl_unlock();
12897                         return -ENETDOWN;
12898                 }
12899
12900                 if (dev)
12901                         dev_hold(dev);
12902
12903                 info->user_ptr[0] = rdev;
12904         }
12905
12906         return 0;
12907 }
12908
12909 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
12910                               struct genl_info *info)
12911 {
12912         if (info->user_ptr[1]) {
12913                 if (ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
12914                         struct wireless_dev *wdev = info->user_ptr[1];
12915
12916                         if (wdev->netdev)
12917                                 dev_put(wdev->netdev);
12918                 } else {
12919                         dev_put(info->user_ptr[1]);
12920                 }
12921         }
12922
12923         if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
12924                 rtnl_unlock();
12925
12926         /* If needed, clear the netlink message payload from the SKB
12927          * as it might contain key data that shouldn't stick around on
12928          * the heap after the SKB is freed. The netlink message header
12929          * is still needed for further processing, so leave it intact.
12930          */
12931         if (ops->internal_flags & NL80211_FLAG_CLEAR_SKB) {
12932                 struct nlmsghdr *nlh = nlmsg_hdr(skb);
12933
12934                 memset(nlmsg_data(nlh), 0, nlmsg_len(nlh));
12935         }
12936 }
12937
12938 static const struct genl_ops nl80211_ops[] = {
12939         {
12940                 .cmd = NL80211_CMD_GET_WIPHY,
12941                 .doit = nl80211_get_wiphy,
12942                 .dumpit = nl80211_dump_wiphy,
12943                 .done = nl80211_dump_wiphy_done,
12944                 .policy = nl80211_policy,
12945                 /* can be retrieved by unprivileged users */
12946                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
12947                                   NL80211_FLAG_NEED_RTNL,
12948         },
12949         {
12950                 .cmd = NL80211_CMD_SET_WIPHY,
12951                 .doit = nl80211_set_wiphy,
12952                 .policy = nl80211_policy,
12953                 .flags = GENL_UNS_ADMIN_PERM,
12954                 .internal_flags = NL80211_FLAG_NEED_RTNL,
12955         },
12956         {
12957                 .cmd = NL80211_CMD_GET_INTERFACE,
12958                 .doit = nl80211_get_interface,
12959                 .dumpit = nl80211_dump_interface,
12960                 .policy = nl80211_policy,
12961                 /* can be retrieved by unprivileged users */
12962                 .internal_flags = NL80211_FLAG_NEED_WDEV |
12963                                   NL80211_FLAG_NEED_RTNL,
12964         },
12965         {
12966                 .cmd = NL80211_CMD_SET_INTERFACE,
12967                 .doit = nl80211_set_interface,
12968                 .policy = nl80211_policy,
12969                 .flags = GENL_UNS_ADMIN_PERM,
12970                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12971                                   NL80211_FLAG_NEED_RTNL,
12972         },
12973         {
12974                 .cmd = NL80211_CMD_NEW_INTERFACE,
12975                 .doit = nl80211_new_interface,
12976                 .policy = nl80211_policy,
12977                 .flags = GENL_UNS_ADMIN_PERM,
12978                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
12979                                   NL80211_FLAG_NEED_RTNL,
12980         },
12981         {
12982                 .cmd = NL80211_CMD_DEL_INTERFACE,
12983                 .doit = nl80211_del_interface,
12984                 .policy = nl80211_policy,
12985                 .flags = GENL_UNS_ADMIN_PERM,
12986                 .internal_flags = NL80211_FLAG_NEED_WDEV |
12987                                   NL80211_FLAG_NEED_RTNL,
12988         },
12989         {
12990                 .cmd = NL80211_CMD_GET_KEY,
12991                 .doit = nl80211_get_key,
12992                 .policy = nl80211_policy,
12993                 .flags = GENL_UNS_ADMIN_PERM,
12994                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12995                                   NL80211_FLAG_NEED_RTNL,
12996         },
12997         {
12998                 .cmd = NL80211_CMD_SET_KEY,
12999                 .doit = nl80211_set_key,
13000                 .policy = nl80211_policy,
13001                 .flags = GENL_UNS_ADMIN_PERM,
13002                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13003                                   NL80211_FLAG_NEED_RTNL |
13004                                   NL80211_FLAG_CLEAR_SKB,
13005         },
13006         {
13007                 .cmd = NL80211_CMD_NEW_KEY,
13008                 .doit = nl80211_new_key,
13009                 .policy = nl80211_policy,
13010                 .flags = GENL_UNS_ADMIN_PERM,
13011                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13012                                   NL80211_FLAG_NEED_RTNL |
13013                                   NL80211_FLAG_CLEAR_SKB,
13014         },
13015         {
13016                 .cmd = NL80211_CMD_DEL_KEY,
13017                 .doit = nl80211_del_key,
13018                 .policy = nl80211_policy,
13019                 .flags = GENL_UNS_ADMIN_PERM,
13020                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13021                                   NL80211_FLAG_NEED_RTNL,
13022         },
13023         {
13024                 .cmd = NL80211_CMD_SET_BEACON,
13025                 .policy = nl80211_policy,
13026                 .flags = GENL_UNS_ADMIN_PERM,
13027                 .doit = nl80211_set_beacon,
13028                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13029                                   NL80211_FLAG_NEED_RTNL,
13030         },
13031         {
13032                 .cmd = NL80211_CMD_START_AP,
13033                 .policy = nl80211_policy,
13034                 .flags = GENL_UNS_ADMIN_PERM,
13035                 .doit = nl80211_start_ap,
13036                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13037                                   NL80211_FLAG_NEED_RTNL,
13038         },
13039         {
13040                 .cmd = NL80211_CMD_STOP_AP,
13041                 .policy = nl80211_policy,
13042                 .flags = GENL_UNS_ADMIN_PERM,
13043                 .doit = nl80211_stop_ap,
13044                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13045                                   NL80211_FLAG_NEED_RTNL,
13046         },
13047         {
13048                 .cmd = NL80211_CMD_GET_STATION,
13049                 .doit = nl80211_get_station,
13050                 .dumpit = nl80211_dump_station,
13051                 .policy = nl80211_policy,
13052                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13053                                   NL80211_FLAG_NEED_RTNL,
13054         },
13055         {
13056                 .cmd = NL80211_CMD_SET_STATION,
13057                 .doit = nl80211_set_station,
13058                 .policy = nl80211_policy,
13059                 .flags = GENL_UNS_ADMIN_PERM,
13060                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13061                                   NL80211_FLAG_NEED_RTNL,
13062         },
13063         {
13064                 .cmd = NL80211_CMD_NEW_STATION,
13065                 .doit = nl80211_new_station,
13066                 .policy = nl80211_policy,
13067                 .flags = GENL_UNS_ADMIN_PERM,
13068                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13069                                   NL80211_FLAG_NEED_RTNL,
13070         },
13071         {
13072                 .cmd = NL80211_CMD_DEL_STATION,
13073                 .doit = nl80211_del_station,
13074                 .policy = nl80211_policy,
13075                 .flags = GENL_UNS_ADMIN_PERM,
13076                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13077                                   NL80211_FLAG_NEED_RTNL,
13078         },
13079         {
13080                 .cmd = NL80211_CMD_GET_MPATH,
13081                 .doit = nl80211_get_mpath,
13082                 .dumpit = nl80211_dump_mpath,
13083                 .policy = nl80211_policy,
13084                 .flags = GENL_UNS_ADMIN_PERM,
13085                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13086                                   NL80211_FLAG_NEED_RTNL,
13087         },
13088         {
13089                 .cmd = NL80211_CMD_GET_MPP,
13090                 .doit = nl80211_get_mpp,
13091                 .dumpit = nl80211_dump_mpp,
13092                 .policy = nl80211_policy,
13093                 .flags = GENL_UNS_ADMIN_PERM,
13094                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13095                                   NL80211_FLAG_NEED_RTNL,
13096         },
13097         {
13098                 .cmd = NL80211_CMD_SET_MPATH,
13099                 .doit = nl80211_set_mpath,
13100                 .policy = nl80211_policy,
13101                 .flags = GENL_UNS_ADMIN_PERM,
13102                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13103                                   NL80211_FLAG_NEED_RTNL,
13104         },
13105         {
13106                 .cmd = NL80211_CMD_NEW_MPATH,
13107                 .doit = nl80211_new_mpath,
13108                 .policy = nl80211_policy,
13109                 .flags = GENL_UNS_ADMIN_PERM,
13110                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13111                                   NL80211_FLAG_NEED_RTNL,
13112         },
13113         {
13114                 .cmd = NL80211_CMD_DEL_MPATH,
13115                 .doit = nl80211_del_mpath,
13116                 .policy = nl80211_policy,
13117                 .flags = GENL_UNS_ADMIN_PERM,
13118                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13119                                   NL80211_FLAG_NEED_RTNL,
13120         },
13121         {
13122                 .cmd = NL80211_CMD_SET_BSS,
13123                 .doit = nl80211_set_bss,
13124                 .policy = nl80211_policy,
13125                 .flags = GENL_UNS_ADMIN_PERM,
13126                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13127                                   NL80211_FLAG_NEED_RTNL,
13128         },
13129         {
13130                 .cmd = NL80211_CMD_GET_REG,
13131                 .doit = nl80211_get_reg_do,
13132                 .dumpit = nl80211_get_reg_dump,
13133                 .policy = nl80211_policy,
13134                 .internal_flags = NL80211_FLAG_NEED_RTNL,
13135                 /* can be retrieved by unprivileged users */
13136         },
13137 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
13138         {
13139                 .cmd = NL80211_CMD_SET_REG,
13140                 .doit = nl80211_set_reg,
13141                 .policy = nl80211_policy,
13142                 .flags = GENL_ADMIN_PERM,
13143                 .internal_flags = NL80211_FLAG_NEED_RTNL,
13144         },
13145 #endif
13146         {
13147                 .cmd = NL80211_CMD_REQ_SET_REG,
13148                 .doit = nl80211_req_set_reg,
13149                 .policy = nl80211_policy,
13150                 .flags = GENL_ADMIN_PERM,
13151         },
13152         {
13153                 .cmd = NL80211_CMD_RELOAD_REGDB,
13154                 .doit = nl80211_reload_regdb,
13155                 .policy = nl80211_policy,
13156                 .flags = GENL_ADMIN_PERM,
13157         },
13158         {
13159                 .cmd = NL80211_CMD_GET_MESH_CONFIG,
13160                 .doit = nl80211_get_mesh_config,
13161                 .policy = nl80211_policy,
13162                 /* can be retrieved by unprivileged users */
13163                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13164                                   NL80211_FLAG_NEED_RTNL,
13165         },
13166         {
13167                 .cmd = NL80211_CMD_SET_MESH_CONFIG,
13168                 .doit = nl80211_update_mesh_config,
13169                 .policy = nl80211_policy,
13170                 .flags = GENL_UNS_ADMIN_PERM,
13171                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13172                                   NL80211_FLAG_NEED_RTNL,
13173         },
13174         {
13175                 .cmd = NL80211_CMD_TRIGGER_SCAN,
13176                 .doit = nl80211_trigger_scan,
13177                 .policy = nl80211_policy,
13178                 .flags = GENL_UNS_ADMIN_PERM,
13179                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13180                                   NL80211_FLAG_NEED_RTNL,
13181         },
13182         {
13183                 .cmd = NL80211_CMD_ABORT_SCAN,
13184                 .doit = nl80211_abort_scan,
13185                 .policy = nl80211_policy,
13186                 .flags = GENL_UNS_ADMIN_PERM,
13187                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13188                                   NL80211_FLAG_NEED_RTNL,
13189         },
13190         {
13191                 .cmd = NL80211_CMD_GET_SCAN,
13192                 .policy = nl80211_policy,
13193                 .dumpit = nl80211_dump_scan,
13194         },
13195         {
13196                 .cmd = NL80211_CMD_START_SCHED_SCAN,
13197                 .doit = nl80211_start_sched_scan,
13198                 .policy = nl80211_policy,
13199                 .flags = GENL_UNS_ADMIN_PERM,
13200                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13201                                   NL80211_FLAG_NEED_RTNL,
13202         },
13203         {
13204                 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
13205                 .doit = nl80211_stop_sched_scan,
13206                 .policy = nl80211_policy,
13207                 .flags = GENL_UNS_ADMIN_PERM,
13208                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13209                                   NL80211_FLAG_NEED_RTNL,
13210         },
13211         {
13212                 .cmd = NL80211_CMD_AUTHENTICATE,
13213                 .doit = nl80211_authenticate,
13214                 .policy = nl80211_policy,
13215                 .flags = GENL_UNS_ADMIN_PERM,
13216                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13217                                   NL80211_FLAG_NEED_RTNL |
13218                                   NL80211_FLAG_CLEAR_SKB,
13219         },
13220         {
13221                 .cmd = NL80211_CMD_ASSOCIATE,
13222                 .doit = nl80211_associate,
13223                 .policy = nl80211_policy,
13224                 .flags = GENL_UNS_ADMIN_PERM,
13225                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13226                                   NL80211_FLAG_NEED_RTNL,
13227         },
13228         {
13229                 .cmd = NL80211_CMD_DEAUTHENTICATE,
13230                 .doit = nl80211_deauthenticate,
13231                 .policy = nl80211_policy,
13232                 .flags = GENL_UNS_ADMIN_PERM,
13233                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13234                                   NL80211_FLAG_NEED_RTNL,
13235         },
13236         {
13237                 .cmd = NL80211_CMD_DISASSOCIATE,
13238                 .doit = nl80211_disassociate,
13239                 .policy = nl80211_policy,
13240                 .flags = GENL_UNS_ADMIN_PERM,
13241                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13242                                   NL80211_FLAG_NEED_RTNL,
13243         },
13244         {
13245                 .cmd = NL80211_CMD_JOIN_IBSS,
13246                 .doit = nl80211_join_ibss,
13247                 .policy = nl80211_policy,
13248                 .flags = GENL_UNS_ADMIN_PERM,
13249                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13250                                   NL80211_FLAG_NEED_RTNL,
13251         },
13252         {
13253                 .cmd = NL80211_CMD_LEAVE_IBSS,
13254                 .doit = nl80211_leave_ibss,
13255                 .policy = nl80211_policy,
13256                 .flags = GENL_UNS_ADMIN_PERM,
13257                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13258                                   NL80211_FLAG_NEED_RTNL,
13259         },
13260 #ifdef CONFIG_NL80211_TESTMODE
13261         {
13262                 .cmd = NL80211_CMD_TESTMODE,
13263                 .doit = nl80211_testmode_do,
13264                 .dumpit = nl80211_testmode_dump,
13265                 .policy = nl80211_policy,
13266                 .flags = GENL_UNS_ADMIN_PERM,
13267                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13268                                   NL80211_FLAG_NEED_RTNL,
13269         },
13270 #endif
13271         {
13272                 .cmd = NL80211_CMD_CONNECT,
13273                 .doit = nl80211_connect,
13274                 .policy = nl80211_policy,
13275                 .flags = GENL_UNS_ADMIN_PERM,
13276                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13277                                   NL80211_FLAG_NEED_RTNL,
13278         },
13279         {
13280                 .cmd = NL80211_CMD_UPDATE_CONNECT_PARAMS,
13281                 .doit = nl80211_update_connect_params,
13282                 .policy = nl80211_policy,
13283                 .flags = GENL_ADMIN_PERM,
13284                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13285                                   NL80211_FLAG_NEED_RTNL,
13286         },
13287         {
13288                 .cmd = NL80211_CMD_DISCONNECT,
13289                 .doit = nl80211_disconnect,
13290                 .policy = nl80211_policy,
13291                 .flags = GENL_UNS_ADMIN_PERM,
13292                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13293                                   NL80211_FLAG_NEED_RTNL,
13294         },
13295         {
13296                 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
13297                 .doit = nl80211_wiphy_netns,
13298                 .policy = nl80211_policy,
13299                 .flags = GENL_UNS_ADMIN_PERM,
13300                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13301                                   NL80211_FLAG_NEED_RTNL,
13302         },
13303         {
13304                 .cmd = NL80211_CMD_GET_SURVEY,
13305                 .policy = nl80211_policy,
13306                 .dumpit = nl80211_dump_survey,
13307         },
13308         {
13309                 .cmd = NL80211_CMD_SET_PMKSA,
13310                 .doit = nl80211_setdel_pmksa,
13311                 .policy = nl80211_policy,
13312                 .flags = GENL_UNS_ADMIN_PERM,
13313                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13314                                   NL80211_FLAG_NEED_RTNL,
13315         },
13316         {
13317                 .cmd = NL80211_CMD_DEL_PMKSA,
13318                 .doit = nl80211_setdel_pmksa,
13319                 .policy = nl80211_policy,
13320                 .flags = GENL_UNS_ADMIN_PERM,
13321                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13322                                   NL80211_FLAG_NEED_RTNL,
13323         },
13324         {
13325                 .cmd = NL80211_CMD_FLUSH_PMKSA,
13326                 .doit = nl80211_flush_pmksa,
13327                 .policy = nl80211_policy,
13328                 .flags = GENL_UNS_ADMIN_PERM,
13329                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13330                                   NL80211_FLAG_NEED_RTNL,
13331         },
13332         {
13333                 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
13334                 .doit = nl80211_remain_on_channel,
13335                 .policy = nl80211_policy,
13336                 .flags = GENL_UNS_ADMIN_PERM,
13337                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13338                                   NL80211_FLAG_NEED_RTNL,
13339         },
13340         {
13341                 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
13342                 .doit = nl80211_cancel_remain_on_channel,
13343                 .policy = nl80211_policy,
13344                 .flags = GENL_UNS_ADMIN_PERM,
13345                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13346                                   NL80211_FLAG_NEED_RTNL,
13347         },
13348         {
13349                 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
13350                 .doit = nl80211_set_tx_bitrate_mask,
13351                 .policy = nl80211_policy,
13352                 .flags = GENL_UNS_ADMIN_PERM,
13353                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13354                                   NL80211_FLAG_NEED_RTNL,
13355         },
13356         {
13357                 .cmd = NL80211_CMD_REGISTER_FRAME,
13358                 .doit = nl80211_register_mgmt,
13359                 .policy = nl80211_policy,
13360                 .flags = GENL_UNS_ADMIN_PERM,
13361                 .internal_flags = NL80211_FLAG_NEED_WDEV |
13362                                   NL80211_FLAG_NEED_RTNL,
13363         },
13364         {
13365                 .cmd = NL80211_CMD_FRAME,
13366                 .doit = nl80211_tx_mgmt,
13367                 .policy = nl80211_policy,
13368                 .flags = GENL_UNS_ADMIN_PERM,
13369                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13370                                   NL80211_FLAG_NEED_RTNL,
13371         },
13372         {
13373                 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
13374                 .doit = nl80211_tx_mgmt_cancel_wait,
13375                 .policy = nl80211_policy,
13376                 .flags = GENL_UNS_ADMIN_PERM,
13377                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13378                                   NL80211_FLAG_NEED_RTNL,
13379         },
13380         {
13381                 .cmd = NL80211_CMD_SET_POWER_SAVE,
13382                 .doit = nl80211_set_power_save,
13383                 .policy = nl80211_policy,
13384                 .flags = GENL_UNS_ADMIN_PERM,
13385                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13386                                   NL80211_FLAG_NEED_RTNL,
13387         },
13388         {
13389                 .cmd = NL80211_CMD_GET_POWER_SAVE,
13390                 .doit = nl80211_get_power_save,
13391                 .policy = nl80211_policy,
13392                 /* can be retrieved by unprivileged users */
13393                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13394                                   NL80211_FLAG_NEED_RTNL,
13395         },
13396         {
13397                 .cmd = NL80211_CMD_SET_CQM,
13398                 .doit = nl80211_set_cqm,
13399                 .policy = nl80211_policy,
13400                 .flags = GENL_UNS_ADMIN_PERM,
13401                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13402                                   NL80211_FLAG_NEED_RTNL,
13403         },
13404         {
13405                 .cmd = NL80211_CMD_SET_CHANNEL,
13406                 .doit = nl80211_set_channel,
13407                 .policy = nl80211_policy,
13408                 .flags = GENL_UNS_ADMIN_PERM,
13409                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13410                                   NL80211_FLAG_NEED_RTNL,
13411         },
13412         {
13413                 .cmd = NL80211_CMD_SET_WDS_PEER,
13414                 .doit = nl80211_set_wds_peer,
13415                 .policy = nl80211_policy,
13416                 .flags = GENL_UNS_ADMIN_PERM,
13417                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13418                                   NL80211_FLAG_NEED_RTNL,
13419         },
13420         {
13421                 .cmd = NL80211_CMD_JOIN_MESH,
13422                 .doit = nl80211_join_mesh,
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_LEAVE_MESH,
13430                 .doit = nl80211_leave_mesh,
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_JOIN_OCB,
13438                 .doit = nl80211_join_ocb,
13439                 .policy = nl80211_policy,
13440                 .flags = GENL_UNS_ADMIN_PERM,
13441                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13442                                   NL80211_FLAG_NEED_RTNL,
13443         },
13444         {
13445                 .cmd = NL80211_CMD_LEAVE_OCB,
13446                 .doit = nl80211_leave_ocb,
13447                 .policy = nl80211_policy,
13448                 .flags = GENL_UNS_ADMIN_PERM,
13449                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13450                                   NL80211_FLAG_NEED_RTNL,
13451         },
13452 #ifdef CONFIG_PM
13453         {
13454                 .cmd = NL80211_CMD_GET_WOWLAN,
13455                 .doit = nl80211_get_wowlan,
13456                 .policy = nl80211_policy,
13457                 /* can be retrieved by unprivileged users */
13458                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13459                                   NL80211_FLAG_NEED_RTNL,
13460         },
13461         {
13462                 .cmd = NL80211_CMD_SET_WOWLAN,
13463                 .doit = nl80211_set_wowlan,
13464                 .policy = nl80211_policy,
13465                 .flags = GENL_UNS_ADMIN_PERM,
13466                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13467                                   NL80211_FLAG_NEED_RTNL,
13468         },
13469 #endif
13470         {
13471                 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
13472                 .doit = nl80211_set_rekey_data,
13473                 .policy = nl80211_policy,
13474                 .flags = GENL_UNS_ADMIN_PERM,
13475                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13476                                   NL80211_FLAG_NEED_RTNL |
13477                                   NL80211_FLAG_CLEAR_SKB,
13478         },
13479         {
13480                 .cmd = NL80211_CMD_TDLS_MGMT,
13481                 .doit = nl80211_tdls_mgmt,
13482                 .policy = nl80211_policy,
13483                 .flags = GENL_UNS_ADMIN_PERM,
13484                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13485                                   NL80211_FLAG_NEED_RTNL,
13486         },
13487         {
13488                 .cmd = NL80211_CMD_TDLS_OPER,
13489                 .doit = nl80211_tdls_oper,
13490                 .policy = nl80211_policy,
13491                 .flags = GENL_UNS_ADMIN_PERM,
13492                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13493                                   NL80211_FLAG_NEED_RTNL,
13494         },
13495         {
13496                 .cmd = NL80211_CMD_UNEXPECTED_FRAME,
13497                 .doit = nl80211_register_unexpected_frame,
13498                 .policy = nl80211_policy,
13499                 .flags = GENL_UNS_ADMIN_PERM,
13500                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13501                                   NL80211_FLAG_NEED_RTNL,
13502         },
13503         {
13504                 .cmd = NL80211_CMD_PROBE_CLIENT,
13505                 .doit = nl80211_probe_client,
13506                 .policy = nl80211_policy,
13507                 .flags = GENL_UNS_ADMIN_PERM,
13508                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13509                                   NL80211_FLAG_NEED_RTNL,
13510         },
13511         {
13512                 .cmd = NL80211_CMD_REGISTER_BEACONS,
13513                 .doit = nl80211_register_beacons,
13514                 .policy = nl80211_policy,
13515                 .flags = GENL_UNS_ADMIN_PERM,
13516                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13517                                   NL80211_FLAG_NEED_RTNL,
13518         },
13519         {
13520                 .cmd = NL80211_CMD_SET_NOACK_MAP,
13521                 .doit = nl80211_set_noack_map,
13522                 .policy = nl80211_policy,
13523                 .flags = GENL_UNS_ADMIN_PERM,
13524                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13525                                   NL80211_FLAG_NEED_RTNL,
13526         },
13527         {
13528                 .cmd = NL80211_CMD_START_P2P_DEVICE,
13529                 .doit = nl80211_start_p2p_device,
13530                 .policy = nl80211_policy,
13531                 .flags = GENL_UNS_ADMIN_PERM,
13532                 .internal_flags = NL80211_FLAG_NEED_WDEV |
13533                                   NL80211_FLAG_NEED_RTNL,
13534         },
13535         {
13536                 .cmd = NL80211_CMD_STOP_P2P_DEVICE,
13537                 .doit = nl80211_stop_p2p_device,
13538                 .policy = nl80211_policy,
13539                 .flags = GENL_UNS_ADMIN_PERM,
13540                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13541                                   NL80211_FLAG_NEED_RTNL,
13542         },
13543         {
13544                 .cmd = NL80211_CMD_START_NAN,
13545                 .doit = nl80211_start_nan,
13546                 .policy = nl80211_policy,
13547                 .flags = GENL_ADMIN_PERM,
13548                 .internal_flags = NL80211_FLAG_NEED_WDEV |
13549                                   NL80211_FLAG_NEED_RTNL,
13550         },
13551         {
13552                 .cmd = NL80211_CMD_STOP_NAN,
13553                 .doit = nl80211_stop_nan,
13554                 .policy = nl80211_policy,
13555                 .flags = GENL_ADMIN_PERM,
13556                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13557                                   NL80211_FLAG_NEED_RTNL,
13558         },
13559         {
13560                 .cmd = NL80211_CMD_ADD_NAN_FUNCTION,
13561                 .doit = nl80211_nan_add_func,
13562                 .policy = nl80211_policy,
13563                 .flags = GENL_ADMIN_PERM,
13564                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13565                                   NL80211_FLAG_NEED_RTNL,
13566         },
13567         {
13568                 .cmd = NL80211_CMD_DEL_NAN_FUNCTION,
13569                 .doit = nl80211_nan_del_func,
13570                 .policy = nl80211_policy,
13571                 .flags = GENL_ADMIN_PERM,
13572                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13573                                   NL80211_FLAG_NEED_RTNL,
13574         },
13575         {
13576                 .cmd = NL80211_CMD_CHANGE_NAN_CONFIG,
13577                 .doit = nl80211_nan_change_config,
13578                 .policy = nl80211_policy,
13579                 .flags = GENL_ADMIN_PERM,
13580                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13581                                   NL80211_FLAG_NEED_RTNL,
13582         },
13583         {
13584                 .cmd = NL80211_CMD_SET_MCAST_RATE,
13585                 .doit = nl80211_set_mcast_rate,
13586                 .policy = nl80211_policy,
13587                 .flags = GENL_UNS_ADMIN_PERM,
13588                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13589                                   NL80211_FLAG_NEED_RTNL,
13590         },
13591         {
13592                 .cmd = NL80211_CMD_SET_MAC_ACL,
13593                 .doit = nl80211_set_mac_acl,
13594                 .policy = nl80211_policy,
13595                 .flags = GENL_UNS_ADMIN_PERM,
13596                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13597                                   NL80211_FLAG_NEED_RTNL,
13598         },
13599         {
13600                 .cmd = NL80211_CMD_RADAR_DETECT,
13601                 .doit = nl80211_start_radar_detection,
13602                 .policy = nl80211_policy,
13603                 .flags = GENL_UNS_ADMIN_PERM,
13604                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13605                                   NL80211_FLAG_NEED_RTNL,
13606         },
13607         {
13608                 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES,
13609                 .doit = nl80211_get_protocol_features,
13610                 .policy = nl80211_policy,
13611         },
13612         {
13613                 .cmd = NL80211_CMD_UPDATE_FT_IES,
13614                 .doit = nl80211_update_ft_ies,
13615                 .policy = nl80211_policy,
13616                 .flags = GENL_UNS_ADMIN_PERM,
13617                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13618                                   NL80211_FLAG_NEED_RTNL,
13619         },
13620         {
13621                 .cmd = NL80211_CMD_CRIT_PROTOCOL_START,
13622                 .doit = nl80211_crit_protocol_start,
13623                 .policy = nl80211_policy,
13624                 .flags = GENL_UNS_ADMIN_PERM,
13625                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13626                                   NL80211_FLAG_NEED_RTNL,
13627         },
13628         {
13629                 .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP,
13630                 .doit = nl80211_crit_protocol_stop,
13631                 .policy = nl80211_policy,
13632                 .flags = GENL_UNS_ADMIN_PERM,
13633                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13634                                   NL80211_FLAG_NEED_RTNL,
13635         },
13636         {
13637                 .cmd = NL80211_CMD_GET_COALESCE,
13638                 .doit = nl80211_get_coalesce,
13639                 .policy = nl80211_policy,
13640                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13641                                   NL80211_FLAG_NEED_RTNL,
13642         },
13643         {
13644                 .cmd = NL80211_CMD_SET_COALESCE,
13645                 .doit = nl80211_set_coalesce,
13646                 .policy = nl80211_policy,
13647                 .flags = GENL_UNS_ADMIN_PERM,
13648                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13649                                   NL80211_FLAG_NEED_RTNL,
13650         },
13651         {
13652                 .cmd = NL80211_CMD_CHANNEL_SWITCH,
13653                 .doit = nl80211_channel_switch,
13654                 .policy = nl80211_policy,
13655                 .flags = GENL_UNS_ADMIN_PERM,
13656                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13657                                   NL80211_FLAG_NEED_RTNL,
13658         },
13659         {
13660                 .cmd = NL80211_CMD_VENDOR,
13661                 .doit = nl80211_vendor_cmd,
13662                 .dumpit = nl80211_vendor_cmd_dump,
13663                 .policy = nl80211_policy,
13664                 .flags = GENL_UNS_ADMIN_PERM,
13665                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13666                                   NL80211_FLAG_NEED_RTNL,
13667         },
13668         {
13669                 .cmd = NL80211_CMD_SET_QOS_MAP,
13670                 .doit = nl80211_set_qos_map,
13671                 .policy = nl80211_policy,
13672                 .flags = GENL_UNS_ADMIN_PERM,
13673                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13674                                   NL80211_FLAG_NEED_RTNL,
13675         },
13676         {
13677                 .cmd = NL80211_CMD_ADD_TX_TS,
13678                 .doit = nl80211_add_tx_ts,
13679                 .policy = nl80211_policy,
13680                 .flags = GENL_UNS_ADMIN_PERM,
13681                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13682                                   NL80211_FLAG_NEED_RTNL,
13683         },
13684         {
13685                 .cmd = NL80211_CMD_DEL_TX_TS,
13686                 .doit = nl80211_del_tx_ts,
13687                 .policy = nl80211_policy,
13688                 .flags = GENL_UNS_ADMIN_PERM,
13689                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13690                                   NL80211_FLAG_NEED_RTNL,
13691         },
13692         {
13693                 .cmd = NL80211_CMD_TDLS_CHANNEL_SWITCH,
13694                 .doit = nl80211_tdls_channel_switch,
13695                 .policy = nl80211_policy,
13696                 .flags = GENL_UNS_ADMIN_PERM,
13697                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13698                                   NL80211_FLAG_NEED_RTNL,
13699         },
13700         {
13701                 .cmd = NL80211_CMD_TDLS_CANCEL_CHANNEL_SWITCH,
13702                 .doit = nl80211_tdls_cancel_channel_switch,
13703                 .policy = nl80211_policy,
13704                 .flags = GENL_UNS_ADMIN_PERM,
13705                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13706                                   NL80211_FLAG_NEED_RTNL,
13707         },
13708         {
13709                 .cmd = NL80211_CMD_SET_MULTICAST_TO_UNICAST,
13710                 .doit = nl80211_set_multicast_to_unicast,
13711                 .policy = nl80211_policy,
13712                 .flags = GENL_UNS_ADMIN_PERM,
13713                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13714                                   NL80211_FLAG_NEED_RTNL,
13715         },
13716         {
13717                 .cmd = NL80211_CMD_SET_PMK,
13718                 .doit = nl80211_set_pmk,
13719                 .policy = nl80211_policy,
13720                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13721                                   NL80211_FLAG_NEED_RTNL,
13722         },
13723         {
13724                 .cmd = NL80211_CMD_DEL_PMK,
13725                 .doit = nl80211_del_pmk,
13726                 .policy = nl80211_policy,
13727                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13728                                   NL80211_FLAG_NEED_RTNL,
13729         },
13730         {
13731                 .cmd = NL80211_CMD_EXTERNAL_AUTH,
13732                 .doit = nl80211_external_auth,
13733                 .policy = nl80211_policy,
13734                 .flags = GENL_ADMIN_PERM,
13735                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13736                                   NL80211_FLAG_NEED_RTNL,
13737         },
13738         {
13739                 .cmd = NL80211_CMD_CONTROL_PORT_FRAME,
13740                 .doit = nl80211_tx_control_port,
13741                 .policy = nl80211_policy,
13742                 .flags = GENL_UNS_ADMIN_PERM,
13743                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13744                                   NL80211_FLAG_NEED_RTNL,
13745         },
13746 };
13747
13748 static struct genl_family nl80211_fam __ro_after_init = {
13749         .name = NL80211_GENL_NAME,      /* have users key off the name instead */
13750         .hdrsize = 0,                   /* no private header */
13751         .version = 1,                   /* no particular meaning now */
13752         .maxattr = NL80211_ATTR_MAX,
13753         .netnsok = true,
13754         .pre_doit = nl80211_pre_doit,
13755         .post_doit = nl80211_post_doit,
13756         .module = THIS_MODULE,
13757         .ops = nl80211_ops,
13758         .n_ops = ARRAY_SIZE(nl80211_ops),
13759         .mcgrps = nl80211_mcgrps,
13760         .n_mcgrps = ARRAY_SIZE(nl80211_mcgrps),
13761 };
13762
13763 /* notification functions */
13764
13765 void nl80211_notify_wiphy(struct cfg80211_registered_device *rdev,
13766                           enum nl80211_commands cmd)
13767 {
13768         struct sk_buff *msg;
13769         struct nl80211_dump_wiphy_state state = {};
13770
13771         WARN_ON(cmd != NL80211_CMD_NEW_WIPHY &&
13772                 cmd != NL80211_CMD_DEL_WIPHY);
13773
13774         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13775         if (!msg)
13776                 return;
13777
13778         if (nl80211_send_wiphy(rdev, cmd, msg, 0, 0, 0, &state) < 0) {
13779                 nlmsg_free(msg);
13780                 return;
13781         }
13782
13783         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13784                                 NL80211_MCGRP_CONFIG, GFP_KERNEL);
13785 }
13786
13787 void nl80211_notify_iface(struct cfg80211_registered_device *rdev,
13788                                 struct wireless_dev *wdev,
13789                                 enum nl80211_commands cmd)
13790 {
13791         struct sk_buff *msg;
13792
13793         WARN_ON(cmd != NL80211_CMD_NEW_INTERFACE &&
13794                 cmd != NL80211_CMD_DEL_INTERFACE);
13795
13796         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13797         if (!msg)
13798                 return;
13799
13800         if (nl80211_send_iface(msg, 0, 0, 0, rdev, wdev,
13801                                cmd == NL80211_CMD_DEL_INTERFACE) < 0) {
13802                 nlmsg_free(msg);
13803                 return;
13804         }
13805
13806         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13807                                 NL80211_MCGRP_CONFIG, GFP_KERNEL);
13808 }
13809
13810 static int nl80211_add_scan_req(struct sk_buff *msg,
13811                                 struct cfg80211_registered_device *rdev)
13812 {
13813         struct cfg80211_scan_request *req = rdev->scan_req;
13814         struct nlattr *nest;
13815         int i;
13816
13817         if (WARN_ON(!req))
13818                 return 0;
13819
13820         nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS);
13821         if (!nest)
13822                 goto nla_put_failure;
13823         for (i = 0; i < req->n_ssids; i++) {
13824                 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid))
13825                         goto nla_put_failure;
13826         }
13827         nla_nest_end(msg, nest);
13828
13829         nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
13830         if (!nest)
13831                 goto nla_put_failure;
13832         for (i = 0; i < req->n_channels; i++) {
13833                 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
13834                         goto nla_put_failure;
13835         }
13836         nla_nest_end(msg, nest);
13837
13838         if (req->ie &&
13839             nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie))
13840                 goto nla_put_failure;
13841
13842         if (req->flags &&
13843             nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags))
13844                 goto nla_put_failure;
13845
13846         if (req->info.scan_start_tsf &&
13847             (nla_put_u64_64bit(msg, NL80211_ATTR_SCAN_START_TIME_TSF,
13848                                req->info.scan_start_tsf, NL80211_BSS_PAD) ||
13849              nla_put(msg, NL80211_ATTR_SCAN_START_TIME_TSF_BSSID, ETH_ALEN,
13850                      req->info.tsf_bssid)))
13851                 goto nla_put_failure;
13852
13853         return 0;
13854  nla_put_failure:
13855         return -ENOBUFS;
13856 }
13857
13858 static int nl80211_prep_scan_msg(struct sk_buff *msg,
13859                                  struct cfg80211_registered_device *rdev,
13860                                  struct wireless_dev *wdev,
13861                                  u32 portid, u32 seq, int flags,
13862                                  u32 cmd)
13863 {
13864         void *hdr;
13865
13866         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
13867         if (!hdr)
13868                 return -1;
13869
13870         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13871             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
13872                                          wdev->netdev->ifindex)) ||
13873             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
13874                               NL80211_ATTR_PAD))
13875                 goto nla_put_failure;
13876
13877         /* ignore errors and send incomplete event anyway */
13878         nl80211_add_scan_req(msg, rdev);
13879
13880         genlmsg_end(msg, hdr);
13881         return 0;
13882
13883  nla_put_failure:
13884         genlmsg_cancel(msg, hdr);
13885         return -EMSGSIZE;
13886 }
13887
13888 static int
13889 nl80211_prep_sched_scan_msg(struct sk_buff *msg,
13890                             struct cfg80211_sched_scan_request *req, u32 cmd)
13891 {
13892         void *hdr;
13893
13894         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
13895         if (!hdr)
13896                 return -1;
13897
13898         if (nla_put_u32(msg, NL80211_ATTR_WIPHY,
13899                         wiphy_to_rdev(req->wiphy)->wiphy_idx) ||
13900             nla_put_u32(msg, NL80211_ATTR_IFINDEX, req->dev->ifindex) ||
13901             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, req->reqid,
13902                               NL80211_ATTR_PAD))
13903                 goto nla_put_failure;
13904
13905         genlmsg_end(msg, hdr);
13906         return 0;
13907
13908  nla_put_failure:
13909         genlmsg_cancel(msg, hdr);
13910         return -EMSGSIZE;
13911 }
13912
13913 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
13914                              struct wireless_dev *wdev)
13915 {
13916         struct sk_buff *msg;
13917
13918         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13919         if (!msg)
13920                 return;
13921
13922         if (nl80211_prep_scan_msg(msg, rdev, wdev, 0, 0, 0,
13923                                   NL80211_CMD_TRIGGER_SCAN) < 0) {
13924                 nlmsg_free(msg);
13925                 return;
13926         }
13927
13928         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13929                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
13930 }
13931
13932 struct sk_buff *nl80211_build_scan_msg(struct cfg80211_registered_device *rdev,
13933                                        struct wireless_dev *wdev, bool aborted)
13934 {
13935         struct sk_buff *msg;
13936
13937         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13938         if (!msg)
13939                 return NULL;
13940
13941         if (nl80211_prep_scan_msg(msg, rdev, wdev, 0, 0, 0,
13942                                   aborted ? NL80211_CMD_SCAN_ABORTED :
13943                                             NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
13944                 nlmsg_free(msg);
13945                 return NULL;
13946         }
13947
13948         return msg;
13949 }
13950
13951 /* send message created by nl80211_build_scan_msg() */
13952 void nl80211_send_scan_msg(struct cfg80211_registered_device *rdev,
13953                            struct sk_buff *msg)
13954 {
13955         if (!msg)
13956                 return;
13957
13958         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13959                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
13960 }
13961
13962 void nl80211_send_sched_scan(struct cfg80211_sched_scan_request *req, u32 cmd)
13963 {
13964         struct sk_buff *msg;
13965
13966         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13967         if (!msg)
13968                 return;
13969
13970         if (nl80211_prep_sched_scan_msg(msg, req, cmd) < 0) {
13971                 nlmsg_free(msg);
13972                 return;
13973         }
13974
13975         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(req->wiphy), msg, 0,
13976                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
13977 }
13978
13979 static bool nl80211_reg_change_event_fill(struct sk_buff *msg,
13980                                           struct regulatory_request *request)
13981 {
13982         /* Userspace can always count this one always being set */
13983         if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator))
13984                 goto nla_put_failure;
13985
13986         if (request->alpha2[0] == '0' && request->alpha2[1] == '0') {
13987                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
13988                                NL80211_REGDOM_TYPE_WORLD))
13989                         goto nla_put_failure;
13990         } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') {
13991                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
13992                                NL80211_REGDOM_TYPE_CUSTOM_WORLD))
13993                         goto nla_put_failure;
13994         } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
13995                    request->intersect) {
13996                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
13997                                NL80211_REGDOM_TYPE_INTERSECTION))
13998                         goto nla_put_failure;
13999         } else {
14000                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
14001                                NL80211_REGDOM_TYPE_COUNTRY) ||
14002                     nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
14003                                    request->alpha2))
14004                         goto nla_put_failure;
14005         }
14006
14007         if (request->wiphy_idx != WIPHY_IDX_INVALID) {
14008                 struct wiphy *wiphy = wiphy_idx_to_wiphy(request->wiphy_idx);
14009
14010                 if (wiphy &&
14011                     nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx))
14012                         goto nla_put_failure;
14013
14014                 if (wiphy &&
14015                     wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
14016                     nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
14017                         goto nla_put_failure;
14018         }
14019
14020         return true;
14021
14022 nla_put_failure:
14023         return false;
14024 }
14025
14026 /*
14027  * This can happen on global regulatory changes or device specific settings
14028  * based on custom regulatory domains.
14029  */
14030 void nl80211_common_reg_change_event(enum nl80211_commands cmd_id,
14031                                      struct regulatory_request *request)
14032 {
14033         struct sk_buff *msg;
14034         void *hdr;
14035
14036         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14037         if (!msg)
14038                 return;
14039
14040         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd_id);
14041         if (!hdr) {
14042                 nlmsg_free(msg);
14043                 return;
14044         }
14045
14046         if (nl80211_reg_change_event_fill(msg, request) == false)
14047                 goto nla_put_failure;
14048
14049         genlmsg_end(msg, hdr);
14050
14051         rcu_read_lock();
14052         genlmsg_multicast_allns(&nl80211_fam, msg, 0,
14053                                 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
14054         rcu_read_unlock();
14055
14056         return;
14057
14058 nla_put_failure:
14059         nlmsg_free(msg);
14060 }
14061
14062 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
14063                                     struct net_device *netdev,
14064                                     const u8 *buf, size_t len,
14065                                     enum nl80211_commands cmd, gfp_t gfp,
14066                                     int uapsd_queues)
14067 {
14068         struct sk_buff *msg;
14069         void *hdr;
14070
14071         msg = nlmsg_new(100 + len, gfp);
14072         if (!msg)
14073                 return;
14074
14075         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
14076         if (!hdr) {
14077                 nlmsg_free(msg);
14078                 return;
14079         }
14080
14081         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14082             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
14083             nla_put(msg, NL80211_ATTR_FRAME, len, buf))
14084                 goto nla_put_failure;
14085
14086         if (uapsd_queues >= 0) {
14087                 struct nlattr *nla_wmm =
14088                         nla_nest_start(msg, NL80211_ATTR_STA_WME);
14089                 if (!nla_wmm)
14090                         goto nla_put_failure;
14091
14092                 if (nla_put_u8(msg, NL80211_STA_WME_UAPSD_QUEUES,
14093                                uapsd_queues))
14094                         goto nla_put_failure;
14095
14096                 nla_nest_end(msg, nla_wmm);
14097         }
14098
14099         genlmsg_end(msg, hdr);
14100
14101         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14102                                 NL80211_MCGRP_MLME, gfp);
14103         return;
14104
14105  nla_put_failure:
14106         nlmsg_free(msg);
14107 }
14108
14109 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
14110                           struct net_device *netdev, const u8 *buf,
14111                           size_t len, gfp_t gfp)
14112 {
14113         nl80211_send_mlme_event(rdev, netdev, buf, len,
14114                                 NL80211_CMD_AUTHENTICATE, gfp, -1);
14115 }
14116
14117 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
14118                            struct net_device *netdev, const u8 *buf,
14119                            size_t len, gfp_t gfp, int uapsd_queues)
14120 {
14121         nl80211_send_mlme_event(rdev, netdev, buf, len,
14122                                 NL80211_CMD_ASSOCIATE, gfp, uapsd_queues);
14123 }
14124
14125 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
14126                          struct net_device *netdev, const u8 *buf,
14127                          size_t len, gfp_t gfp)
14128 {
14129         nl80211_send_mlme_event(rdev, netdev, buf, len,
14130                                 NL80211_CMD_DEAUTHENTICATE, gfp, -1);
14131 }
14132
14133 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
14134                            struct net_device *netdev, const u8 *buf,
14135                            size_t len, gfp_t gfp)
14136 {
14137         nl80211_send_mlme_event(rdev, netdev, buf, len,
14138                                 NL80211_CMD_DISASSOCIATE, gfp, -1);
14139 }
14140
14141 void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf,
14142                                   size_t len)
14143 {
14144         struct wireless_dev *wdev = dev->ieee80211_ptr;
14145         struct wiphy *wiphy = wdev->wiphy;
14146         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14147         const struct ieee80211_mgmt *mgmt = (void *)buf;
14148         u32 cmd;
14149
14150         if (WARN_ON(len < 2))
14151                 return;
14152
14153         if (ieee80211_is_deauth(mgmt->frame_control))
14154                 cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE;
14155         else
14156                 cmd = NL80211_CMD_UNPROT_DISASSOCIATE;
14157
14158         trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len);
14159         nl80211_send_mlme_event(rdev, dev, buf, len, cmd, GFP_ATOMIC, -1);
14160 }
14161 EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt);
14162
14163 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
14164                                       struct net_device *netdev, int cmd,
14165                                       const u8 *addr, gfp_t gfp)
14166 {
14167         struct sk_buff *msg;
14168         void *hdr;
14169
14170         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14171         if (!msg)
14172                 return;
14173
14174         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
14175         if (!hdr) {
14176                 nlmsg_free(msg);
14177                 return;
14178         }
14179
14180         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14181             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
14182             nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
14183             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
14184                 goto nla_put_failure;
14185
14186         genlmsg_end(msg, hdr);
14187
14188         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14189                                 NL80211_MCGRP_MLME, gfp);
14190         return;
14191
14192  nla_put_failure:
14193         nlmsg_free(msg);
14194 }
14195
14196 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
14197                                struct net_device *netdev, const u8 *addr,
14198                                gfp_t gfp)
14199 {
14200         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
14201                                   addr, gfp);
14202 }
14203
14204 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
14205                                 struct net_device *netdev, const u8 *addr,
14206                                 gfp_t gfp)
14207 {
14208         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
14209                                   addr, gfp);
14210 }
14211
14212 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
14213                                  struct net_device *netdev,
14214                                  struct cfg80211_connect_resp_params *cr,
14215                                  gfp_t gfp)
14216 {
14217         struct sk_buff *msg;
14218         void *hdr;
14219
14220         msg = nlmsg_new(100 + cr->req_ie_len + cr->resp_ie_len +
14221                         cr->fils_kek_len + cr->pmk_len +
14222                         (cr->pmkid ? WLAN_PMKID_LEN : 0), gfp);
14223         if (!msg)
14224                 return;
14225
14226         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
14227         if (!hdr) {
14228                 nlmsg_free(msg);
14229                 return;
14230         }
14231
14232         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14233             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
14234             (cr->bssid &&
14235              nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, cr->bssid)) ||
14236             nla_put_u16(msg, NL80211_ATTR_STATUS_CODE,
14237                         cr->status < 0 ? WLAN_STATUS_UNSPECIFIED_FAILURE :
14238                         cr->status) ||
14239             (cr->status < 0 &&
14240              (nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
14241               nla_put_u32(msg, NL80211_ATTR_TIMEOUT_REASON,
14242                           cr->timeout_reason))) ||
14243             (cr->req_ie &&
14244              nla_put(msg, NL80211_ATTR_REQ_IE, cr->req_ie_len, cr->req_ie)) ||
14245             (cr->resp_ie &&
14246              nla_put(msg, NL80211_ATTR_RESP_IE, cr->resp_ie_len,
14247                      cr->resp_ie)) ||
14248             (cr->update_erp_next_seq_num &&
14249              nla_put_u16(msg, NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM,
14250                          cr->fils_erp_next_seq_num)) ||
14251             (cr->status == WLAN_STATUS_SUCCESS &&
14252              ((cr->fils_kek &&
14253                nla_put(msg, NL80211_ATTR_FILS_KEK, cr->fils_kek_len,
14254                        cr->fils_kek)) ||
14255               (cr->pmk &&
14256                nla_put(msg, NL80211_ATTR_PMK, cr->pmk_len, cr->pmk)) ||
14257               (cr->pmkid &&
14258                nla_put(msg, NL80211_ATTR_PMKID, WLAN_PMKID_LEN, cr->pmkid)))))
14259                 goto nla_put_failure;
14260
14261         genlmsg_end(msg, hdr);
14262
14263         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14264                                 NL80211_MCGRP_MLME, gfp);
14265         return;
14266
14267  nla_put_failure:
14268         nlmsg_free(msg);
14269 }
14270
14271 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
14272                          struct net_device *netdev,
14273                          struct cfg80211_roam_info *info, gfp_t gfp)
14274 {
14275         struct sk_buff *msg;
14276         void *hdr;
14277         const u8 *bssid = info->bss ? info->bss->bssid : info->bssid;
14278
14279         msg = nlmsg_new(100 + info->req_ie_len + info->resp_ie_len, gfp);
14280         if (!msg)
14281                 return;
14282
14283         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
14284         if (!hdr) {
14285                 nlmsg_free(msg);
14286                 return;
14287         }
14288
14289         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14290             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
14291             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid) ||
14292             (info->req_ie &&
14293              nla_put(msg, NL80211_ATTR_REQ_IE, info->req_ie_len,
14294                      info->req_ie)) ||
14295             (info->resp_ie &&
14296              nla_put(msg, NL80211_ATTR_RESP_IE, info->resp_ie_len,
14297                      info->resp_ie)))
14298                 goto nla_put_failure;
14299
14300         genlmsg_end(msg, hdr);
14301
14302         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14303                                 NL80211_MCGRP_MLME, gfp);
14304         return;
14305
14306  nla_put_failure:
14307         nlmsg_free(msg);
14308 }
14309
14310 void nl80211_send_port_authorized(struct cfg80211_registered_device *rdev,
14311                                   struct net_device *netdev, const u8 *bssid)
14312 {
14313         struct sk_buff *msg;
14314         void *hdr;
14315
14316         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14317         if (!msg)
14318                 return;
14319
14320         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PORT_AUTHORIZED);
14321         if (!hdr) {
14322                 nlmsg_free(msg);
14323                 return;
14324         }
14325
14326         if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
14327                 goto nla_put_failure;
14328
14329         genlmsg_end(msg, hdr);
14330
14331         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14332                                 NL80211_MCGRP_MLME, GFP_KERNEL);
14333         return;
14334
14335  nla_put_failure:
14336         nlmsg_free(msg);
14337 }
14338
14339 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
14340                                struct net_device *netdev, u16 reason,
14341                                const u8 *ie, size_t ie_len, bool from_ap)
14342 {
14343         struct sk_buff *msg;
14344         void *hdr;
14345
14346         msg = nlmsg_new(100 + ie_len, GFP_KERNEL);
14347         if (!msg)
14348                 return;
14349
14350         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
14351         if (!hdr) {
14352                 nlmsg_free(msg);
14353                 return;
14354         }
14355
14356         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14357             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
14358             (reason &&
14359              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) ||
14360             (from_ap &&
14361              nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) ||
14362             (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie)))
14363                 goto nla_put_failure;
14364
14365         genlmsg_end(msg, hdr);
14366
14367         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14368                                 NL80211_MCGRP_MLME, GFP_KERNEL);
14369         return;
14370
14371  nla_put_failure:
14372         nlmsg_free(msg);
14373 }
14374
14375 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
14376                              struct net_device *netdev, const u8 *bssid,
14377                              gfp_t gfp)
14378 {
14379         struct sk_buff *msg;
14380         void *hdr;
14381
14382         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14383         if (!msg)
14384                 return;
14385
14386         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
14387         if (!hdr) {
14388                 nlmsg_free(msg);
14389                 return;
14390         }
14391
14392         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14393             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
14394             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
14395                 goto nla_put_failure;
14396
14397         genlmsg_end(msg, hdr);
14398
14399         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14400                                 NL80211_MCGRP_MLME, gfp);
14401         return;
14402
14403  nla_put_failure:
14404         nlmsg_free(msg);
14405 }
14406
14407 void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr,
14408                                         const u8* ie, u8 ie_len, gfp_t gfp)
14409 {
14410         struct wireless_dev *wdev = dev->ieee80211_ptr;
14411         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
14412         struct sk_buff *msg;
14413         void *hdr;
14414
14415         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT))
14416                 return;
14417
14418         trace_cfg80211_notify_new_peer_candidate(dev, addr);
14419
14420         msg = nlmsg_new(100 + ie_len, gfp);
14421         if (!msg)
14422                 return;
14423
14424         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
14425         if (!hdr) {
14426                 nlmsg_free(msg);
14427                 return;
14428         }
14429
14430         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14431             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
14432             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
14433             (ie_len && ie &&
14434              nla_put(msg, NL80211_ATTR_IE, ie_len , ie)))
14435                 goto nla_put_failure;
14436
14437         genlmsg_end(msg, hdr);
14438
14439         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14440                                 NL80211_MCGRP_MLME, gfp);
14441         return;
14442
14443  nla_put_failure:
14444         nlmsg_free(msg);
14445 }
14446 EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate);
14447
14448 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
14449                                  struct net_device *netdev, const u8 *addr,
14450                                  enum nl80211_key_type key_type, int key_id,
14451                                  const u8 *tsc, gfp_t gfp)
14452 {
14453         struct sk_buff *msg;
14454         void *hdr;
14455
14456         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14457         if (!msg)
14458                 return;
14459
14460         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
14461         if (!hdr) {
14462                 nlmsg_free(msg);
14463                 return;
14464         }
14465
14466         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14467             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
14468             (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
14469             nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) ||
14470             (key_id != -1 &&
14471              nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) ||
14472             (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc)))
14473                 goto nla_put_failure;
14474
14475         genlmsg_end(msg, hdr);
14476
14477         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14478                                 NL80211_MCGRP_MLME, gfp);
14479         return;
14480
14481  nla_put_failure:
14482         nlmsg_free(msg);
14483 }
14484
14485 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
14486                                     struct ieee80211_channel *channel_before,
14487                                     struct ieee80211_channel *channel_after)
14488 {
14489         struct sk_buff *msg;
14490         void *hdr;
14491         struct nlattr *nl_freq;
14492
14493         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
14494         if (!msg)
14495                 return;
14496
14497         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
14498         if (!hdr) {
14499                 nlmsg_free(msg);
14500                 return;
14501         }
14502
14503         /*
14504          * Since we are applying the beacon hint to a wiphy we know its
14505          * wiphy_idx is valid
14506          */
14507         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
14508                 goto nla_put_failure;
14509
14510         /* Before */
14511         nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE);
14512         if (!nl_freq)
14513                 goto nla_put_failure;
14514
14515         if (nl80211_msg_put_channel(msg, wiphy, channel_before, false))
14516                 goto nla_put_failure;
14517         nla_nest_end(msg, nl_freq);
14518
14519         /* After */
14520         nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER);
14521         if (!nl_freq)
14522                 goto nla_put_failure;
14523
14524         if (nl80211_msg_put_channel(msg, wiphy, channel_after, false))
14525                 goto nla_put_failure;
14526         nla_nest_end(msg, nl_freq);
14527
14528         genlmsg_end(msg, hdr);
14529
14530         rcu_read_lock();
14531         genlmsg_multicast_allns(&nl80211_fam, msg, 0,
14532                                 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
14533         rcu_read_unlock();
14534
14535         return;
14536
14537 nla_put_failure:
14538         nlmsg_free(msg);
14539 }
14540
14541 static void nl80211_send_remain_on_chan_event(
14542         int cmd, struct cfg80211_registered_device *rdev,
14543         struct wireless_dev *wdev, u64 cookie,
14544         struct ieee80211_channel *chan,
14545         unsigned int duration, gfp_t gfp)
14546 {
14547         struct sk_buff *msg;
14548         void *hdr;
14549
14550         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14551         if (!msg)
14552                 return;
14553
14554         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
14555         if (!hdr) {
14556                 nlmsg_free(msg);
14557                 return;
14558         }
14559
14560         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14561             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
14562                                          wdev->netdev->ifindex)) ||
14563             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
14564                               NL80211_ATTR_PAD) ||
14565             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) ||
14566             nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
14567                         NL80211_CHAN_NO_HT) ||
14568             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
14569                               NL80211_ATTR_PAD))
14570                 goto nla_put_failure;
14571
14572         if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL &&
14573             nla_put_u32(msg, NL80211_ATTR_DURATION, duration))
14574                 goto nla_put_failure;
14575
14576         genlmsg_end(msg, hdr);
14577
14578         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14579                                 NL80211_MCGRP_MLME, gfp);
14580         return;
14581
14582  nla_put_failure:
14583         nlmsg_free(msg);
14584 }
14585
14586 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie,
14587                                struct ieee80211_channel *chan,
14588                                unsigned int duration, gfp_t gfp)
14589 {
14590         struct wiphy *wiphy = wdev->wiphy;
14591         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14592
14593         trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration);
14594         nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
14595                                           rdev, wdev, cookie, chan,
14596                                           duration, gfp);
14597 }
14598 EXPORT_SYMBOL(cfg80211_ready_on_channel);
14599
14600 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie,
14601                                         struct ieee80211_channel *chan,
14602                                         gfp_t gfp)
14603 {
14604         struct wiphy *wiphy = wdev->wiphy;
14605         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14606
14607         trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan);
14608         nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
14609                                           rdev, wdev, cookie, chan, 0, gfp);
14610 }
14611 EXPORT_SYMBOL(cfg80211_remain_on_channel_expired);
14612
14613 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr,
14614                       struct station_info *sinfo, gfp_t gfp)
14615 {
14616         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
14617         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14618         struct sk_buff *msg;
14619
14620         trace_cfg80211_new_sta(dev, mac_addr, sinfo);
14621
14622         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14623         if (!msg)
14624                 return;
14625
14626         if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION, 0, 0, 0,
14627                                  rdev, dev, mac_addr, sinfo) < 0) {
14628                 nlmsg_free(msg);
14629                 return;
14630         }
14631
14632         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14633                                 NL80211_MCGRP_MLME, gfp);
14634 }
14635 EXPORT_SYMBOL(cfg80211_new_sta);
14636
14637 void cfg80211_del_sta_sinfo(struct net_device *dev, const u8 *mac_addr,
14638                             struct station_info *sinfo, gfp_t gfp)
14639 {
14640         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
14641         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14642         struct sk_buff *msg;
14643         struct station_info *empty_sinfo = NULL;
14644
14645         if (!sinfo) {
14646                 empty_sinfo = kzalloc(sizeof(*empty_sinfo), GFP_KERNEL);
14647                 if (!empty_sinfo)
14648                         return;
14649                 sinfo = empty_sinfo;
14650         }
14651
14652         trace_cfg80211_del_sta(dev, mac_addr);
14653
14654         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14655         if (!msg)
14656                 goto out;
14657
14658         if (nl80211_send_station(msg, NL80211_CMD_DEL_STATION, 0, 0, 0,
14659                                  rdev, dev, mac_addr, sinfo) < 0) {
14660                 nlmsg_free(msg);
14661                 goto out;
14662         }
14663
14664         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14665                                 NL80211_MCGRP_MLME, gfp);
14666
14667 out:
14668         kfree(empty_sinfo);
14669 }
14670 EXPORT_SYMBOL(cfg80211_del_sta_sinfo);
14671
14672 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr,
14673                           enum nl80211_connect_failed_reason reason,
14674                           gfp_t gfp)
14675 {
14676         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
14677         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14678         struct sk_buff *msg;
14679         void *hdr;
14680
14681         msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
14682         if (!msg)
14683                 return;
14684
14685         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED);
14686         if (!hdr) {
14687                 nlmsg_free(msg);
14688                 return;
14689         }
14690
14691         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
14692             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
14693             nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason))
14694                 goto nla_put_failure;
14695
14696         genlmsg_end(msg, hdr);
14697
14698         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14699                                 NL80211_MCGRP_MLME, gfp);
14700         return;
14701
14702  nla_put_failure:
14703         nlmsg_free(msg);
14704 }
14705 EXPORT_SYMBOL(cfg80211_conn_failed);
14706
14707 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
14708                                        const u8 *addr, gfp_t gfp)
14709 {
14710         struct wireless_dev *wdev = dev->ieee80211_ptr;
14711         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
14712         struct sk_buff *msg;
14713         void *hdr;
14714         u32 nlportid = READ_ONCE(wdev->ap_unexpected_nlportid);
14715
14716         if (!nlportid)
14717                 return false;
14718
14719         msg = nlmsg_new(100, gfp);
14720         if (!msg)
14721                 return true;
14722
14723         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
14724         if (!hdr) {
14725                 nlmsg_free(msg);
14726                 return true;
14727         }
14728
14729         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14730             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
14731             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
14732                 goto nla_put_failure;
14733
14734         genlmsg_end(msg, hdr);
14735         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
14736         return true;
14737
14738  nla_put_failure:
14739         nlmsg_free(msg);
14740         return true;
14741 }
14742
14743 bool cfg80211_rx_spurious_frame(struct net_device *dev,
14744                                 const u8 *addr, gfp_t gfp)
14745 {
14746         struct wireless_dev *wdev = dev->ieee80211_ptr;
14747         bool ret;
14748
14749         trace_cfg80211_rx_spurious_frame(dev, addr);
14750
14751         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
14752                     wdev->iftype != NL80211_IFTYPE_P2P_GO)) {
14753                 trace_cfg80211_return_bool(false);
14754                 return false;
14755         }
14756         ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
14757                                          addr, gfp);
14758         trace_cfg80211_return_bool(ret);
14759         return ret;
14760 }
14761 EXPORT_SYMBOL(cfg80211_rx_spurious_frame);
14762
14763 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev,
14764                                         const u8 *addr, gfp_t gfp)
14765 {
14766         struct wireless_dev *wdev = dev->ieee80211_ptr;
14767         bool ret;
14768
14769         trace_cfg80211_rx_unexpected_4addr_frame(dev, addr);
14770
14771         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
14772                     wdev->iftype != NL80211_IFTYPE_P2P_GO &&
14773                     wdev->iftype != NL80211_IFTYPE_AP_VLAN)) {
14774                 trace_cfg80211_return_bool(false);
14775                 return false;
14776         }
14777         ret = __nl80211_unexpected_frame(dev,
14778                                          NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
14779                                          addr, gfp);
14780         trace_cfg80211_return_bool(ret);
14781         return ret;
14782 }
14783 EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame);
14784
14785 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
14786                       struct wireless_dev *wdev, u32 nlportid,
14787                       int freq, int sig_dbm,
14788                       const u8 *buf, size_t len, u32 flags, gfp_t gfp)
14789 {
14790         struct net_device *netdev = wdev->netdev;
14791         struct sk_buff *msg;
14792         void *hdr;
14793
14794         msg = nlmsg_new(100 + len, gfp);
14795         if (!msg)
14796                 return -ENOMEM;
14797
14798         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
14799         if (!hdr) {
14800                 nlmsg_free(msg);
14801                 return -ENOMEM;
14802         }
14803
14804         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14805             (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
14806                                         netdev->ifindex)) ||
14807             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
14808                               NL80211_ATTR_PAD) ||
14809             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) ||
14810             (sig_dbm &&
14811              nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
14812             nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
14813             (flags &&
14814              nla_put_u32(msg, NL80211_ATTR_RXMGMT_FLAGS, flags)))
14815                 goto nla_put_failure;
14816
14817         genlmsg_end(msg, hdr);
14818
14819         return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
14820
14821  nla_put_failure:
14822         nlmsg_free(msg);
14823         return -ENOBUFS;
14824 }
14825
14826 void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie,
14827                              const u8 *buf, size_t len, bool ack, gfp_t gfp)
14828 {
14829         struct wiphy *wiphy = wdev->wiphy;
14830         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14831         struct net_device *netdev = wdev->netdev;
14832         struct sk_buff *msg;
14833         void *hdr;
14834
14835         trace_cfg80211_mgmt_tx_status(wdev, cookie, ack);
14836
14837         msg = nlmsg_new(100 + len, gfp);
14838         if (!msg)
14839                 return;
14840
14841         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS);
14842         if (!hdr) {
14843                 nlmsg_free(msg);
14844                 return;
14845         }
14846
14847         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14848             (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
14849                                    netdev->ifindex)) ||
14850             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
14851                               NL80211_ATTR_PAD) ||
14852             nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
14853             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
14854                               NL80211_ATTR_PAD) ||
14855             (ack && nla_put_flag(msg, NL80211_ATTR_ACK)))
14856                 goto nla_put_failure;
14857
14858         genlmsg_end(msg, hdr);
14859
14860         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14861                                 NL80211_MCGRP_MLME, gfp);
14862         return;
14863
14864  nla_put_failure:
14865         nlmsg_free(msg);
14866 }
14867 EXPORT_SYMBOL(cfg80211_mgmt_tx_status);
14868
14869 static int __nl80211_rx_control_port(struct net_device *dev,
14870                                      const u8 *buf, size_t len,
14871                                      const u8 *addr, u16 proto,
14872                                      bool unencrypted, gfp_t gfp)
14873 {
14874         struct wireless_dev *wdev = dev->ieee80211_ptr;
14875         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
14876         struct sk_buff *msg;
14877         void *hdr;
14878         u32 nlportid = READ_ONCE(wdev->conn_owner_nlportid);
14879
14880         if (!nlportid)
14881                 return -ENOENT;
14882
14883         msg = nlmsg_new(100 + len, gfp);
14884         if (!msg)
14885                 return -ENOMEM;
14886
14887         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONTROL_PORT_FRAME);
14888         if (!hdr) {
14889                 nlmsg_free(msg);
14890                 return -ENOBUFS;
14891         }
14892
14893         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14894             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
14895             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
14896                               NL80211_ATTR_PAD) ||
14897             nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
14898             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
14899             nla_put_u16(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE, proto) ||
14900             (unencrypted && nla_put_flag(msg,
14901                                          NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT)))
14902                 goto nla_put_failure;
14903
14904         genlmsg_end(msg, hdr);
14905
14906         return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
14907
14908  nla_put_failure:
14909         nlmsg_free(msg);
14910         return -ENOBUFS;
14911 }
14912
14913 bool cfg80211_rx_control_port(struct net_device *dev,
14914                               const u8 *buf, size_t len,
14915                               const u8 *addr, u16 proto, bool unencrypted)
14916 {
14917         int ret;
14918
14919         trace_cfg80211_rx_control_port(dev, buf, len, addr, proto, unencrypted);
14920         ret = __nl80211_rx_control_port(dev, buf, len, addr, proto,
14921                                         unencrypted, GFP_ATOMIC);
14922         trace_cfg80211_return_bool(ret == 0);
14923         return ret == 0;
14924 }
14925 EXPORT_SYMBOL(cfg80211_rx_control_port);
14926
14927 static struct sk_buff *cfg80211_prepare_cqm(struct net_device *dev,
14928                                             const char *mac, gfp_t gfp)
14929 {
14930         struct wireless_dev *wdev = dev->ieee80211_ptr;
14931         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
14932         struct sk_buff *msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14933         void **cb;
14934
14935         if (!msg)
14936                 return NULL;
14937
14938         cb = (void **)msg->cb;
14939
14940         cb[0] = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
14941         if (!cb[0]) {
14942                 nlmsg_free(msg);
14943                 return NULL;
14944         }
14945
14946         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14947             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
14948                 goto nla_put_failure;
14949
14950         if (mac && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
14951                 goto nla_put_failure;
14952
14953         cb[1] = nla_nest_start(msg, NL80211_ATTR_CQM);
14954         if (!cb[1])
14955                 goto nla_put_failure;
14956
14957         cb[2] = rdev;
14958
14959         return msg;
14960  nla_put_failure:
14961         nlmsg_free(msg);
14962         return NULL;
14963 }
14964
14965 static void cfg80211_send_cqm(struct sk_buff *msg, gfp_t gfp)
14966 {
14967         void **cb = (void **)msg->cb;
14968         struct cfg80211_registered_device *rdev = cb[2];
14969
14970         nla_nest_end(msg, cb[1]);
14971         genlmsg_end(msg, cb[0]);
14972
14973         memset(msg->cb, 0, sizeof(msg->cb));
14974
14975         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14976                                 NL80211_MCGRP_MLME, gfp);
14977 }
14978
14979 void cfg80211_cqm_rssi_notify(struct net_device *dev,
14980                               enum nl80211_cqm_rssi_threshold_event rssi_event,
14981                               s32 rssi_level, gfp_t gfp)
14982 {
14983         struct sk_buff *msg;
14984         struct wireless_dev *wdev = dev->ieee80211_ptr;
14985         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
14986
14987         trace_cfg80211_cqm_rssi_notify(dev, rssi_event, rssi_level);
14988
14989         if (WARN_ON(rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW &&
14990                     rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH))
14991                 return;
14992
14993         if (wdev->cqm_config) {
14994                 wdev->cqm_config->last_rssi_event_value = rssi_level;
14995
14996                 cfg80211_cqm_rssi_update(rdev, dev);
14997
14998                 if (rssi_level == 0)
14999                         rssi_level = wdev->cqm_config->last_rssi_event_value;
15000         }
15001
15002         msg = cfg80211_prepare_cqm(dev, NULL, gfp);
15003         if (!msg)
15004                 return;
15005
15006         if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
15007                         rssi_event))
15008                 goto nla_put_failure;
15009
15010         if (rssi_level && nla_put_s32(msg, NL80211_ATTR_CQM_RSSI_LEVEL,
15011                                       rssi_level))
15012                 goto nla_put_failure;
15013
15014         cfg80211_send_cqm(msg, gfp);
15015
15016         return;
15017
15018  nla_put_failure:
15019         nlmsg_free(msg);
15020 }
15021 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify);
15022
15023 void cfg80211_cqm_txe_notify(struct net_device *dev,
15024                              const u8 *peer, u32 num_packets,
15025                              u32 rate, u32 intvl, gfp_t gfp)
15026 {
15027         struct sk_buff *msg;
15028
15029         msg = cfg80211_prepare_cqm(dev, peer, gfp);
15030         if (!msg)
15031                 return;
15032
15033         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets))
15034                 goto nla_put_failure;
15035
15036         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate))
15037                 goto nla_put_failure;
15038
15039         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl))
15040                 goto nla_put_failure;
15041
15042         cfg80211_send_cqm(msg, gfp);
15043         return;
15044
15045  nla_put_failure:
15046         nlmsg_free(msg);
15047 }
15048 EXPORT_SYMBOL(cfg80211_cqm_txe_notify);
15049
15050 void cfg80211_cqm_pktloss_notify(struct net_device *dev,
15051                                  const u8 *peer, u32 num_packets, gfp_t gfp)
15052 {
15053         struct sk_buff *msg;
15054
15055         trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets);
15056
15057         msg = cfg80211_prepare_cqm(dev, peer, gfp);
15058         if (!msg)
15059                 return;
15060
15061         if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets))
15062                 goto nla_put_failure;
15063
15064         cfg80211_send_cqm(msg, gfp);
15065         return;
15066
15067  nla_put_failure:
15068         nlmsg_free(msg);
15069 }
15070 EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify);
15071
15072 void cfg80211_cqm_beacon_loss_notify(struct net_device *dev, gfp_t gfp)
15073 {
15074         struct sk_buff *msg;
15075
15076         msg = cfg80211_prepare_cqm(dev, NULL, gfp);
15077         if (!msg)
15078                 return;
15079
15080         if (nla_put_flag(msg, NL80211_ATTR_CQM_BEACON_LOSS_EVENT))
15081                 goto nla_put_failure;
15082
15083         cfg80211_send_cqm(msg, gfp);
15084         return;
15085
15086  nla_put_failure:
15087         nlmsg_free(msg);
15088 }
15089 EXPORT_SYMBOL(cfg80211_cqm_beacon_loss_notify);
15090
15091 static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
15092                                      struct net_device *netdev, const u8 *bssid,
15093                                      const u8 *replay_ctr, gfp_t gfp)
15094 {
15095         struct sk_buff *msg;
15096         struct nlattr *rekey_attr;
15097         void *hdr;
15098
15099         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15100         if (!msg)
15101                 return;
15102
15103         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
15104         if (!hdr) {
15105                 nlmsg_free(msg);
15106                 return;
15107         }
15108
15109         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15110             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15111             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
15112                 goto nla_put_failure;
15113
15114         rekey_attr = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA);
15115         if (!rekey_attr)
15116                 goto nla_put_failure;
15117
15118         if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR,
15119                     NL80211_REPLAY_CTR_LEN, replay_ctr))
15120                 goto nla_put_failure;
15121
15122         nla_nest_end(msg, rekey_attr);
15123
15124         genlmsg_end(msg, hdr);
15125
15126         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15127                                 NL80211_MCGRP_MLME, gfp);
15128         return;
15129
15130  nla_put_failure:
15131         nlmsg_free(msg);
15132 }
15133
15134 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid,
15135                                const u8 *replay_ctr, gfp_t gfp)
15136 {
15137         struct wireless_dev *wdev = dev->ieee80211_ptr;
15138         struct wiphy *wiphy = wdev->wiphy;
15139         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15140
15141         trace_cfg80211_gtk_rekey_notify(dev, bssid);
15142         nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp);
15143 }
15144 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify);
15145
15146 static void
15147 nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
15148                                struct net_device *netdev, int index,
15149                                const u8 *bssid, bool preauth, gfp_t gfp)
15150 {
15151         struct sk_buff *msg;
15152         struct nlattr *attr;
15153         void *hdr;
15154
15155         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15156         if (!msg)
15157                 return;
15158
15159         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
15160         if (!hdr) {
15161                 nlmsg_free(msg);
15162                 return;
15163         }
15164
15165         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15166             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
15167                 goto nla_put_failure;
15168
15169         attr = nla_nest_start(msg, NL80211_ATTR_PMKSA_CANDIDATE);
15170         if (!attr)
15171                 goto nla_put_failure;
15172
15173         if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) ||
15174             nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) ||
15175             (preauth &&
15176              nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH)))
15177                 goto nla_put_failure;
15178
15179         nla_nest_end(msg, attr);
15180
15181         genlmsg_end(msg, hdr);
15182
15183         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15184                                 NL80211_MCGRP_MLME, gfp);
15185         return;
15186
15187  nla_put_failure:
15188         nlmsg_free(msg);
15189 }
15190
15191 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index,
15192                                      const u8 *bssid, bool preauth, gfp_t gfp)
15193 {
15194         struct wireless_dev *wdev = dev->ieee80211_ptr;
15195         struct wiphy *wiphy = wdev->wiphy;
15196         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15197
15198         trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth);
15199         nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp);
15200 }
15201 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify);
15202
15203 static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev,
15204                                      struct net_device *netdev,
15205                                      struct cfg80211_chan_def *chandef,
15206                                      gfp_t gfp,
15207                                      enum nl80211_commands notif,
15208                                      u8 count)
15209 {
15210         struct sk_buff *msg;
15211         void *hdr;
15212
15213         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15214         if (!msg)
15215                 return;
15216
15217         hdr = nl80211hdr_put(msg, 0, 0, 0, notif);
15218         if (!hdr) {
15219                 nlmsg_free(msg);
15220                 return;
15221         }
15222
15223         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
15224                 goto nla_put_failure;
15225
15226         if (nl80211_send_chandef(msg, chandef))
15227                 goto nla_put_failure;
15228
15229         if ((notif == NL80211_CMD_CH_SWITCH_STARTED_NOTIFY) &&
15230             (nla_put_u32(msg, NL80211_ATTR_CH_SWITCH_COUNT, count)))
15231                         goto nla_put_failure;
15232
15233         genlmsg_end(msg, hdr);
15234
15235         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15236                                 NL80211_MCGRP_MLME, gfp);
15237         return;
15238
15239  nla_put_failure:
15240         nlmsg_free(msg);
15241 }
15242
15243 void cfg80211_ch_switch_notify(struct net_device *dev,
15244                                struct cfg80211_chan_def *chandef)
15245 {
15246         struct wireless_dev *wdev = dev->ieee80211_ptr;
15247         struct wiphy *wiphy = wdev->wiphy;
15248         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15249
15250         ASSERT_WDEV_LOCK(wdev);
15251
15252         trace_cfg80211_ch_switch_notify(dev, chandef);
15253
15254         wdev->chandef = *chandef;
15255         wdev->preset_chandef = *chandef;
15256         nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
15257                                  NL80211_CMD_CH_SWITCH_NOTIFY, 0);
15258 }
15259 EXPORT_SYMBOL(cfg80211_ch_switch_notify);
15260
15261 void cfg80211_ch_switch_started_notify(struct net_device *dev,
15262                                        struct cfg80211_chan_def *chandef,
15263                                        u8 count)
15264 {
15265         struct wireless_dev *wdev = dev->ieee80211_ptr;
15266         struct wiphy *wiphy = wdev->wiphy;
15267         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15268
15269         trace_cfg80211_ch_switch_started_notify(dev, chandef);
15270
15271         nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
15272                                  NL80211_CMD_CH_SWITCH_STARTED_NOTIFY, count);
15273 }
15274 EXPORT_SYMBOL(cfg80211_ch_switch_started_notify);
15275
15276 void
15277 nl80211_radar_notify(struct cfg80211_registered_device *rdev,
15278                      const struct cfg80211_chan_def *chandef,
15279                      enum nl80211_radar_event event,
15280                      struct net_device *netdev, gfp_t gfp)
15281 {
15282         struct sk_buff *msg;
15283         void *hdr;
15284
15285         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15286         if (!msg)
15287                 return;
15288
15289         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT);
15290         if (!hdr) {
15291                 nlmsg_free(msg);
15292                 return;
15293         }
15294
15295         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
15296                 goto nla_put_failure;
15297
15298         /* NOP and radar events don't need a netdev parameter */
15299         if (netdev) {
15300                 struct wireless_dev *wdev = netdev->ieee80211_ptr;
15301
15302                 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15303                     nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
15304                                       NL80211_ATTR_PAD))
15305                         goto nla_put_failure;
15306         }
15307
15308         if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event))
15309                 goto nla_put_failure;
15310
15311         if (nl80211_send_chandef(msg, chandef))
15312                 goto nla_put_failure;
15313
15314         genlmsg_end(msg, hdr);
15315
15316         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15317                                 NL80211_MCGRP_MLME, gfp);
15318         return;
15319
15320  nla_put_failure:
15321         nlmsg_free(msg);
15322 }
15323
15324 void cfg80211_sta_opmode_change_notify(struct net_device *dev, const u8 *mac,
15325                                        struct sta_opmode_info *sta_opmode,
15326                                        gfp_t gfp)
15327 {
15328         struct sk_buff *msg;
15329         struct wireless_dev *wdev = dev->ieee80211_ptr;
15330         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
15331         void *hdr;
15332
15333         if (WARN_ON(!mac))
15334                 return;
15335
15336         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15337         if (!msg)
15338                 return;
15339
15340         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STA_OPMODE_CHANGED);
15341         if (!hdr) {
15342                 nlmsg_free(msg);
15343                 return;
15344         }
15345
15346         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
15347                 goto nla_put_failure;
15348
15349         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
15350                 goto nla_put_failure;
15351
15352         if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
15353                 goto nla_put_failure;
15354
15355         if ((sta_opmode->changed & STA_OPMODE_SMPS_MODE_CHANGED) &&
15356             nla_put_u8(msg, NL80211_ATTR_SMPS_MODE, sta_opmode->smps_mode))
15357                 goto nla_put_failure;
15358
15359         if ((sta_opmode->changed & STA_OPMODE_MAX_BW_CHANGED) &&
15360             nla_put_u8(msg, NL80211_ATTR_CHANNEL_WIDTH, sta_opmode->bw))
15361                 goto nla_put_failure;
15362
15363         if ((sta_opmode->changed & STA_OPMODE_N_SS_CHANGED) &&
15364             nla_put_u8(msg, NL80211_ATTR_NSS, sta_opmode->rx_nss))
15365                 goto nla_put_failure;
15366
15367         genlmsg_end(msg, hdr);
15368
15369         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15370                                 NL80211_MCGRP_MLME, gfp);
15371
15372         return;
15373
15374 nla_put_failure:
15375         nlmsg_free(msg);
15376 }
15377 EXPORT_SYMBOL(cfg80211_sta_opmode_change_notify);
15378
15379 void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
15380                            u64 cookie, bool acked, s32 ack_signal,
15381                            bool is_valid_ack_signal, gfp_t gfp)
15382 {
15383         struct wireless_dev *wdev = dev->ieee80211_ptr;
15384         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
15385         struct sk_buff *msg;
15386         void *hdr;
15387
15388         trace_cfg80211_probe_status(dev, addr, cookie, acked);
15389
15390         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15391
15392         if (!msg)
15393                 return;
15394
15395         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT);
15396         if (!hdr) {
15397                 nlmsg_free(msg);
15398                 return;
15399         }
15400
15401         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15402             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
15403             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
15404             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
15405                               NL80211_ATTR_PAD) ||
15406             (acked && nla_put_flag(msg, NL80211_ATTR_ACK)) ||
15407             (is_valid_ack_signal && nla_put_s32(msg, NL80211_ATTR_ACK_SIGNAL,
15408                                                 ack_signal)))
15409                 goto nla_put_failure;
15410
15411         genlmsg_end(msg, hdr);
15412
15413         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15414                                 NL80211_MCGRP_MLME, gfp);
15415         return;
15416
15417  nla_put_failure:
15418         nlmsg_free(msg);
15419 }
15420 EXPORT_SYMBOL(cfg80211_probe_status);
15421
15422 void cfg80211_report_obss_beacon(struct wiphy *wiphy,
15423                                  const u8 *frame, size_t len,
15424                                  int freq, int sig_dbm)
15425 {
15426         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15427         struct sk_buff *msg;
15428         void *hdr;
15429         struct cfg80211_beacon_registration *reg;
15430
15431         trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm);
15432
15433         spin_lock_bh(&rdev->beacon_registrations_lock);
15434         list_for_each_entry(reg, &rdev->beacon_registrations, list) {
15435                 msg = nlmsg_new(len + 100, GFP_ATOMIC);
15436                 if (!msg) {
15437                         spin_unlock_bh(&rdev->beacon_registrations_lock);
15438                         return;
15439                 }
15440
15441                 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
15442                 if (!hdr)
15443                         goto nla_put_failure;
15444
15445                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15446                     (freq &&
15447                      nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq)) ||
15448                     (sig_dbm &&
15449                      nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
15450                     nla_put(msg, NL80211_ATTR_FRAME, len, frame))
15451                         goto nla_put_failure;
15452
15453                 genlmsg_end(msg, hdr);
15454
15455                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid);
15456         }
15457         spin_unlock_bh(&rdev->beacon_registrations_lock);
15458         return;
15459
15460  nla_put_failure:
15461         spin_unlock_bh(&rdev->beacon_registrations_lock);
15462         nlmsg_free(msg);
15463 }
15464 EXPORT_SYMBOL(cfg80211_report_obss_beacon);
15465
15466 #ifdef CONFIG_PM
15467 static int cfg80211_net_detect_results(struct sk_buff *msg,
15468                                        struct cfg80211_wowlan_wakeup *wakeup)
15469 {
15470         struct cfg80211_wowlan_nd_info *nd = wakeup->net_detect;
15471         struct nlattr *nl_results, *nl_match, *nl_freqs;
15472         int i, j;
15473
15474         nl_results = nla_nest_start(
15475                 msg, NL80211_WOWLAN_TRIG_NET_DETECT_RESULTS);
15476         if (!nl_results)
15477                 return -EMSGSIZE;
15478
15479         for (i = 0; i < nd->n_matches; i++) {
15480                 struct cfg80211_wowlan_nd_match *match = nd->matches[i];
15481
15482                 nl_match = nla_nest_start(msg, i);
15483                 if (!nl_match)
15484                         break;
15485
15486                 /* The SSID attribute is optional in nl80211, but for
15487                  * simplicity reasons it's always present in the
15488                  * cfg80211 structure.  If a driver can't pass the
15489                  * SSID, that needs to be changed.  A zero length SSID
15490                  * is still a valid SSID (wildcard), so it cannot be
15491                  * used for this purpose.
15492                  */
15493                 if (nla_put(msg, NL80211_ATTR_SSID, match->ssid.ssid_len,
15494                             match->ssid.ssid)) {
15495                         nla_nest_cancel(msg, nl_match);
15496                         goto out;
15497                 }
15498
15499                 if (match->n_channels) {
15500                         nl_freqs = nla_nest_start(
15501                                 msg, NL80211_ATTR_SCAN_FREQUENCIES);
15502                         if (!nl_freqs) {
15503                                 nla_nest_cancel(msg, nl_match);
15504                                 goto out;
15505                         }
15506
15507                         for (j = 0; j < match->n_channels; j++) {
15508                                 if (nla_put_u32(msg, j, match->channels[j])) {
15509                                         nla_nest_cancel(msg, nl_freqs);
15510                                         nla_nest_cancel(msg, nl_match);
15511                                         goto out;
15512                                 }
15513                         }
15514
15515                         nla_nest_end(msg, nl_freqs);
15516                 }
15517
15518                 nla_nest_end(msg, nl_match);
15519         }
15520
15521 out:
15522         nla_nest_end(msg, nl_results);
15523         return 0;
15524 }
15525
15526 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev,
15527                                    struct cfg80211_wowlan_wakeup *wakeup,
15528                                    gfp_t gfp)
15529 {
15530         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
15531         struct sk_buff *msg;
15532         void *hdr;
15533         int size = 200;
15534
15535         trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup);
15536
15537         if (wakeup)
15538                 size += wakeup->packet_present_len;
15539
15540         msg = nlmsg_new(size, gfp);
15541         if (!msg)
15542                 return;
15543
15544         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN);
15545         if (!hdr)
15546                 goto free_msg;
15547
15548         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15549             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
15550                               NL80211_ATTR_PAD))
15551                 goto free_msg;
15552
15553         if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
15554                                         wdev->netdev->ifindex))
15555                 goto free_msg;
15556
15557         if (wakeup) {
15558                 struct nlattr *reasons;
15559
15560                 reasons = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
15561                 if (!reasons)
15562                         goto free_msg;
15563
15564                 if (wakeup->disconnect &&
15565                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT))
15566                         goto free_msg;
15567                 if (wakeup->magic_pkt &&
15568                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT))
15569                         goto free_msg;
15570                 if (wakeup->gtk_rekey_failure &&
15571                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE))
15572                         goto free_msg;
15573                 if (wakeup->eap_identity_req &&
15574                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST))
15575                         goto free_msg;
15576                 if (wakeup->four_way_handshake &&
15577                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE))
15578                         goto free_msg;
15579                 if (wakeup->rfkill_release &&
15580                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))
15581                         goto free_msg;
15582
15583                 if (wakeup->pattern_idx >= 0 &&
15584                     nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
15585                                 wakeup->pattern_idx))
15586                         goto free_msg;
15587
15588                 if (wakeup->tcp_match &&
15589                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH))
15590                         goto free_msg;
15591
15592                 if (wakeup->tcp_connlost &&
15593                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST))
15594                         goto free_msg;
15595
15596                 if (wakeup->tcp_nomoretokens &&
15597                     nla_put_flag(msg,
15598                                  NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS))
15599                         goto free_msg;
15600
15601                 if (wakeup->packet) {
15602                         u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211;
15603                         u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN;
15604
15605                         if (!wakeup->packet_80211) {
15606                                 pkt_attr =
15607                                         NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023;
15608                                 len_attr =
15609                                         NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN;
15610                         }
15611
15612                         if (wakeup->packet_len &&
15613                             nla_put_u32(msg, len_attr, wakeup->packet_len))
15614                                 goto free_msg;
15615
15616                         if (nla_put(msg, pkt_attr, wakeup->packet_present_len,
15617                                     wakeup->packet))
15618                                 goto free_msg;
15619                 }
15620
15621                 if (wakeup->net_detect &&
15622                     cfg80211_net_detect_results(msg, wakeup))
15623                                 goto free_msg;
15624
15625                 nla_nest_end(msg, reasons);
15626         }
15627
15628         genlmsg_end(msg, hdr);
15629
15630         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15631                                 NL80211_MCGRP_MLME, gfp);
15632         return;
15633
15634  free_msg:
15635         nlmsg_free(msg);
15636 }
15637 EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup);
15638 #endif
15639
15640 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer,
15641                                 enum nl80211_tdls_operation oper,
15642                                 u16 reason_code, gfp_t gfp)
15643 {
15644         struct wireless_dev *wdev = dev->ieee80211_ptr;
15645         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
15646         struct sk_buff *msg;
15647         void *hdr;
15648
15649         trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper,
15650                                          reason_code);
15651
15652         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15653         if (!msg)
15654                 return;
15655
15656         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER);
15657         if (!hdr) {
15658                 nlmsg_free(msg);
15659                 return;
15660         }
15661
15662         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15663             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
15664             nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) ||
15665             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) ||
15666             (reason_code > 0 &&
15667              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code)))
15668                 goto nla_put_failure;
15669
15670         genlmsg_end(msg, hdr);
15671
15672         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15673                                 NL80211_MCGRP_MLME, gfp);
15674         return;
15675
15676  nla_put_failure:
15677         nlmsg_free(msg);
15678 }
15679 EXPORT_SYMBOL(cfg80211_tdls_oper_request);
15680
15681 static int nl80211_netlink_notify(struct notifier_block * nb,
15682                                   unsigned long state,
15683                                   void *_notify)
15684 {
15685         struct netlink_notify *notify = _notify;
15686         struct cfg80211_registered_device *rdev;
15687         struct wireless_dev *wdev;
15688         struct cfg80211_beacon_registration *reg, *tmp;
15689
15690         if (state != NETLINK_URELEASE || notify->protocol != NETLINK_GENERIC)
15691                 return NOTIFY_DONE;
15692
15693         rcu_read_lock();
15694
15695         list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
15696                 struct cfg80211_sched_scan_request *sched_scan_req;
15697
15698                 list_for_each_entry_rcu(sched_scan_req,
15699                                         &rdev->sched_scan_req_list,
15700                                         list) {
15701                         if (sched_scan_req->owner_nlportid == notify->portid) {
15702                                 sched_scan_req->nl_owner_dead = true;
15703                                 schedule_work(&rdev->sched_scan_stop_wk);
15704                         }
15705                 }
15706
15707                 list_for_each_entry_rcu(wdev, &rdev->wiphy.wdev_list, list) {
15708                         cfg80211_mlme_unregister_socket(wdev, notify->portid);
15709
15710                         if (wdev->owner_nlportid == notify->portid) {
15711                                 wdev->nl_owner_dead = true;
15712                                 schedule_work(&rdev->destroy_work);
15713                         } else if (wdev->conn_owner_nlportid == notify->portid) {
15714                                 schedule_work(&wdev->disconnect_wk);
15715                         }
15716                 }
15717
15718                 spin_lock_bh(&rdev->beacon_registrations_lock);
15719                 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations,
15720                                          list) {
15721                         if (reg->nlportid == notify->portid) {
15722                                 list_del(&reg->list);
15723                                 kfree(reg);
15724                                 break;
15725                         }
15726                 }
15727                 spin_unlock_bh(&rdev->beacon_registrations_lock);
15728         }
15729
15730         rcu_read_unlock();
15731
15732         /*
15733          * It is possible that the user space process that is controlling the
15734          * indoor setting disappeared, so notify the regulatory core.
15735          */
15736         regulatory_netlink_notify(notify->portid);
15737         return NOTIFY_OK;
15738 }
15739
15740 static struct notifier_block nl80211_netlink_notifier = {
15741         .notifier_call = nl80211_netlink_notify,
15742 };
15743
15744 void cfg80211_ft_event(struct net_device *netdev,
15745                        struct cfg80211_ft_event_params *ft_event)
15746 {
15747         struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
15748         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15749         struct sk_buff *msg;
15750         void *hdr;
15751
15752         trace_cfg80211_ft_event(wiphy, netdev, ft_event);
15753
15754         if (!ft_event->target_ap)
15755                 return;
15756
15757         msg = nlmsg_new(100 + ft_event->ric_ies_len, GFP_KERNEL);
15758         if (!msg)
15759                 return;
15760
15761         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT);
15762         if (!hdr)
15763                 goto out;
15764
15765         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15766             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15767             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap))
15768                 goto out;
15769
15770         if (ft_event->ies &&
15771             nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies))
15772                 goto out;
15773         if (ft_event->ric_ies &&
15774             nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len,
15775                     ft_event->ric_ies))
15776                 goto out;
15777
15778         genlmsg_end(msg, hdr);
15779
15780         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15781                                 NL80211_MCGRP_MLME, GFP_KERNEL);
15782         return;
15783  out:
15784         nlmsg_free(msg);
15785 }
15786 EXPORT_SYMBOL(cfg80211_ft_event);
15787
15788 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp)
15789 {
15790         struct cfg80211_registered_device *rdev;
15791         struct sk_buff *msg;
15792         void *hdr;
15793         u32 nlportid;
15794
15795         rdev = wiphy_to_rdev(wdev->wiphy);
15796         if (!rdev->crit_proto_nlportid)
15797                 return;
15798
15799         nlportid = rdev->crit_proto_nlportid;
15800         rdev->crit_proto_nlportid = 0;
15801
15802         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15803         if (!msg)
15804                 return;
15805
15806         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP);
15807         if (!hdr)
15808                 goto nla_put_failure;
15809
15810         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15811             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
15812                               NL80211_ATTR_PAD))
15813                 goto nla_put_failure;
15814
15815         genlmsg_end(msg, hdr);
15816
15817         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
15818         return;
15819
15820  nla_put_failure:
15821         nlmsg_free(msg);
15822 }
15823 EXPORT_SYMBOL(cfg80211_crit_proto_stopped);
15824
15825 void nl80211_send_ap_stopped(struct wireless_dev *wdev)
15826 {
15827         struct wiphy *wiphy = wdev->wiphy;
15828         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15829         struct sk_buff *msg;
15830         void *hdr;
15831
15832         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15833         if (!msg)
15834                 return;
15835
15836         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STOP_AP);
15837         if (!hdr)
15838                 goto out;
15839
15840         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15841             nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex) ||
15842             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
15843                               NL80211_ATTR_PAD))
15844                 goto out;
15845
15846         genlmsg_end(msg, hdr);
15847
15848         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(wiphy), msg, 0,
15849                                 NL80211_MCGRP_MLME, GFP_KERNEL);
15850         return;
15851  out:
15852         nlmsg_free(msg);
15853 }
15854
15855 int cfg80211_external_auth_request(struct net_device *dev,
15856                                    struct cfg80211_external_auth_params *params,
15857                                    gfp_t gfp)
15858 {
15859         struct wireless_dev *wdev = dev->ieee80211_ptr;
15860         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
15861         struct sk_buff *msg;
15862         void *hdr;
15863
15864         if (!wdev->conn_owner_nlportid)
15865                 return -EINVAL;
15866
15867         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15868         if (!msg)
15869                 return -ENOMEM;
15870
15871         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_EXTERNAL_AUTH);
15872         if (!hdr)
15873                 goto nla_put_failure;
15874
15875         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15876             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
15877             nla_put_u32(msg, NL80211_ATTR_AKM_SUITES, params->key_mgmt_suite) ||
15878             nla_put_u32(msg, NL80211_ATTR_EXTERNAL_AUTH_ACTION,
15879                         params->action) ||
15880             nla_put(msg, NL80211_ATTR_BSSID, ETH_ALEN, params->bssid) ||
15881             nla_put(msg, NL80211_ATTR_SSID, params->ssid.ssid_len,
15882                     params->ssid.ssid))
15883                 goto nla_put_failure;
15884
15885         genlmsg_end(msg, hdr);
15886         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
15887                         wdev->conn_owner_nlportid);
15888         return 0;
15889
15890  nla_put_failure:
15891         nlmsg_free(msg);
15892         return -ENOBUFS;
15893 }
15894 EXPORT_SYMBOL(cfg80211_external_auth_request);
15895
15896 /* initialisation/exit functions */
15897
15898 int __init nl80211_init(void)
15899 {
15900         int err;
15901
15902         err = genl_register_family(&nl80211_fam);
15903         if (err)
15904                 return err;
15905
15906         err = netlink_register_notifier(&nl80211_netlink_notifier);
15907         if (err)
15908                 goto err_out;
15909
15910         return 0;
15911  err_out:
15912         genl_unregister_family(&nl80211_fam);
15913         return err;
15914 }
15915
15916 void nl80211_exit(void)
15917 {
15918         netlink_unregister_notifier(&nl80211_netlink_notifier);
15919         genl_unregister_family(&nl80211_fam);
15920 }