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  */
   6
   7 #include <linux/if.h>
   8 #include <linux/module.h>
   9 #include <linux/err.h>
  10 #include <linux/slab.h>
  11 #include <linux/list.h>
  12 #include <linux/if_ether.h>
  13 #include <linux/ieee80211.h>
  14 #include <linux/nl80211.h>
  15 #include <linux/rtnetlink.h>
  16 #include <linux/netlink.h>
  17 #include <linux/etherdevice.h>
  18 #include <net/net_namespace.h>
  19 #include <net/genetlink.h>
  20 #include <net/cfg80211.h>
  21 #include <net/sock.h>
  22 #include <net/inet_connection_sock.h>
  23 #include "core.h"
  24 #include "nl80211.h"
  25 #include "reg.h"
  26 #include "rdev-ops.h"
  27
  28 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
  29                                    struct genl_info *info,
  30                                    struct cfg80211_crypto_settings *settings,
  31                                    int cipher_limit);
  32
  33 static int nl80211_pre_doit(struct genl_ops *ops, struct sk_buff *skb,
  34                             struct genl_info *info);
  35 static void nl80211_post_doit(struct genl_ops *ops, struct sk_buff *skb,
  36                               struct genl_info *info);
  37
  38 /* the netlink family */
  39 static struct genl_family nl80211_fam = {
  40         .id = GENL_ID_GENERATE, /* don't bother with a hardcoded ID */
  41         .name = "nl80211",      /* have users key off the name instead */
  42         .hdrsize = 0,           /* no private header */
  43         .version = 1,           /* no particular meaning now */
  44         .maxattr = NL80211_ATTR_MAX,
  45         .netnsok = true,
  46         .pre_doit = nl80211_pre_doit,
  47         .post_doit = nl80211_post_doit,
  48 };
  49
  50 /* returns ERR_PTR values */
  51 static struct wireless_dev *
  52 __cfg80211_wdev_from_attrs(struct net *netns, struct nlattr **attrs)
  53 {
  54         struct cfg80211_registered_device *rdev;
  55         struct wireless_dev *result = NULL;
  56         bool have_ifidx = attrs[NL80211_ATTR_IFINDEX];
  57         bool have_wdev_id = attrs[NL80211_ATTR_WDEV];
  58         u64 wdev_id;
  59         int wiphy_idx = -1;
  60         int ifidx = -1;
  61
  62         assert_cfg80211_lock();
  63
  64         if (!have_ifidx && !have_wdev_id)
  65                 return ERR_PTR(-EINVAL);
  66
  67         if (have_ifidx)
  68                 ifidx = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
  69         if (have_wdev_id) {
  70                 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
  71                 wiphy_idx = wdev_id >> 32;
  72         }
  73
  74         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
  75                 struct wireless_dev *wdev;
  76
  77                 if (wiphy_net(&rdev->wiphy) != netns)
  78                         continue;
  79
  80                 if (have_wdev_id && rdev->wiphy_idx != wiphy_idx)
  81                         continue;
  82
  83                 mutex_lock(&rdev->devlist_mtx);
  84                 list_for_each_entry(wdev, &rdev->wdev_list, list) {
  85                         if (have_ifidx && wdev->netdev &&
  86                             wdev->netdev->ifindex == ifidx) {
  87                                 result = wdev;
  88                                 break;
  89                         }
  90                         if (have_wdev_id && wdev->identifier == (u32)wdev_id) {
  91                                 result = wdev;
  92                                 break;
  93                         }
  94                 }
  95                 mutex_unlock(&rdev->devlist_mtx);
  96
  97                 if (result)
  98                         break;
  99         }
 100
 101         if (result)
 102                 return result;
 103         return ERR_PTR(-ENODEV);
 104 }
 105
 106 static struct cfg80211_registered_device *
 107 __cfg80211_rdev_from_attrs(struct net *netns, struct nlattr **attrs)
 108 {
 109         struct cfg80211_registered_device *rdev = NULL, *tmp;
 110         struct net_device *netdev;
 111
 112         assert_cfg80211_lock();
 113
 114         if (!attrs[NL80211_ATTR_WIPHY] &&
 115             !attrs[NL80211_ATTR_IFINDEX] &&
 116             !attrs[NL80211_ATTR_WDEV])
 117                 return ERR_PTR(-EINVAL);
 118
 119         if (attrs[NL80211_ATTR_WIPHY])
 120                 rdev = cfg80211_rdev_by_wiphy_idx(
 121                                 nla_get_u32(attrs[NL80211_ATTR_WIPHY]));
 122
 123         if (attrs[NL80211_ATTR_WDEV]) {
 124                 u64 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
 125                 struct wireless_dev *wdev;
 126                 bool found = false;
 127
 128                 tmp = cfg80211_rdev_by_wiphy_idx(wdev_id >> 32);
 129                 if (tmp) {
 130                         /* make sure wdev exists */
 131                         mutex_lock(&tmp->devlist_mtx);
 132                         list_for_each_entry(wdev, &tmp->wdev_list, list) {
 133                                 if (wdev->identifier != (u32)wdev_id)
 134                                         continue;
 135                                 found = true;
 136                                 break;
 137                         }
 138                         mutex_unlock(&tmp->devlist_mtx);
 139
 140                         if (!found)
 141                                 tmp = NULL;
 142
 143                         if (rdev && tmp != rdev)
 144                                 return ERR_PTR(-EINVAL);
 145                         rdev = tmp;
 146                 }
 147         }
 148
 149         if (attrs[NL80211_ATTR_IFINDEX]) {
 150                 int ifindex = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
 151                 netdev = dev_get_by_index(netns, ifindex);
 152                 if (netdev) {
 153                         if (netdev->ieee80211_ptr)
 154                                 tmp = wiphy_to_dev(
 155                                                 netdev->ieee80211_ptr->wiphy);
 156                         else
 157                                 tmp = NULL;
 158
 159                         dev_put(netdev);
 160
 161                         /* not wireless device -- return error */
 162                         if (!tmp)
 163                                 return ERR_PTR(-EINVAL);
 164
 165                         /* mismatch -- return error */
 166                         if (rdev && tmp != rdev)
 167                                 return ERR_PTR(-EINVAL);
 168
 169                         rdev = tmp;
 170                 }
 171         }
 172
 173         if (!rdev)
 174                 return ERR_PTR(-ENODEV);
 175
 176         if (netns != wiphy_net(&rdev->wiphy))
 177                 return ERR_PTR(-ENODEV);
 178
 179         return rdev;
 180 }
 181
 182 /*
 183  * This function returns a pointer to the driver
 184  * that the genl_info item that is passed refers to.
 185  * If successful, it returns non-NULL and also locks
 186  * the driver's mutex!
 187  *
 188  * This means that you need to call cfg80211_unlock_rdev()
 189  * before being allowed to acquire &cfg80211_mutex!
 190  *
 191  * This is necessary because we need to lock the global
 192  * mutex to get an item off the list safely, and then
 193  * we lock the rdev mutex so it doesn't go away under us.
 194  *
 195  * We don't want to keep cfg80211_mutex locked
 196  * for all the time in order to allow requests on
 197  * other interfaces to go through at the same time.
 198  *
 199  * The result of this can be a PTR_ERR and hence must
 200  * be checked with IS_ERR() for errors.
 201  */
 202 static struct cfg80211_registered_device *
 203 cfg80211_get_dev_from_info(struct net *netns, struct genl_info *info)
 204 {
 205         struct cfg80211_registered_device *rdev;
 206
 207         mutex_lock(&cfg80211_mutex);
 208         rdev = __cfg80211_rdev_from_attrs(netns, info->attrs);
 209
 210         /* if it is not an error we grab the lock on
 211          * it to assure it won't be going away while
 212          * we operate on it */
 213         if (!IS_ERR(rdev))
 214                 mutex_lock(&rdev->mtx);
 215
 216         mutex_unlock(&cfg80211_mutex);
 217
 218         return rdev;
 219 }
 220
 221 /* policy for the attributes */
 222 static const struct nla_policy nl80211_policy[NL80211_ATTR_MAX+1] = {
 223         [NL80211_ATTR_WIPHY] = { .type = NLA_U32 },
 224         [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING,
 225                                       .len = 20-1 },
 226         [NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED },
 227
 228         [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 },
 229         [NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 },
 230         [NL80211_ATTR_CHANNEL_WIDTH] = { .type = NLA_U32 },
 231         [NL80211_ATTR_CENTER_FREQ1] = { .type = NLA_U32 },
 232         [NL80211_ATTR_CENTER_FREQ2] = { .type = NLA_U32 },
 233
 234         [NL80211_ATTR_WIPHY_RETRY_SHORT] = { .type = NLA_U8 },
 235         [NL80211_ATTR_WIPHY_RETRY_LONG] = { .type = NLA_U8 },
 236         [NL80211_ATTR_WIPHY_FRAG_THRESHOLD] = { .type = NLA_U32 },
 237         [NL80211_ATTR_WIPHY_RTS_THRESHOLD] = { .type = NLA_U32 },
 238         [NL80211_ATTR_WIPHY_COVERAGE_CLASS] = { .type = NLA_U8 },
 239
 240         [NL80211_ATTR_IFTYPE] = { .type = NLA_U32 },
 241         [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 },
 242         [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 },
 243
 244         [NL80211_ATTR_MAC] = { .len = ETH_ALEN },
 245         [NL80211_ATTR_PREV_BSSID] = { .len = ETH_ALEN },
 246
 247         [NL80211_ATTR_KEY] = { .type = NLA_NESTED, },
 248         [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY,
 249                                     .len = WLAN_MAX_KEY_LEN },
 250         [NL80211_ATTR_KEY_IDX] = { .type = NLA_U8 },
 251         [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 },
 252         [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG },
 253         [NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
 254         [NL80211_ATTR_KEY_TYPE] = { .type = NLA_U32 },
 255
 256         [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 },
 257         [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 },
 258         [NL80211_ATTR_BEACON_HEAD] = { .type = NLA_BINARY,
 259                                        .len = IEEE80211_MAX_DATA_LEN },
 260         [NL80211_ATTR_BEACON_TAIL] = { .type = NLA_BINARY,
 261                                        .len = IEEE80211_MAX_DATA_LEN },
 262         [NL80211_ATTR_STA_AID] = { .type = NLA_U16 },
 263         [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED },
 264         [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 },
 265         [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY,
 266                                                .len = NL80211_MAX_SUPP_RATES },
 267         [NL80211_ATTR_STA_PLINK_ACTION] = { .type = NLA_U8 },
 268         [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 },
 269         [NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ },
 270         [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY,
 271                                    .len = IEEE80211_MAX_MESH_ID_LEN },
 272         [NL80211_ATTR_MPATH_NEXT_HOP] = { .type = NLA_U32 },
 273
 274         [NL80211_ATTR_REG_ALPHA2] = { .type = NLA_STRING, .len = 2 },
 275         [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED },
 276
 277         [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 },
 278         [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 },
 279         [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 },
 280         [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY,
 281                                            .len = NL80211_MAX_SUPP_RATES },
 282         [NL80211_ATTR_BSS_HT_OPMODE] = { .type = NLA_U16 },
 283
 284         [NL80211_ATTR_MESH_CONFIG] = { .type = NLA_NESTED },
 285         [NL80211_ATTR_SUPPORT_MESH_AUTH] = { .type = NLA_FLAG },
 286
 287         [NL80211_ATTR_HT_CAPABILITY] = { .len = NL80211_HT_CAPABILITY_LEN },
 288
 289         [NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 },
 290         [NL80211_ATTR_IE] = { .type = NLA_BINARY,
 291                               .len = IEEE80211_MAX_DATA_LEN },
 292         [NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED },
 293         [NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED },
 294
 295         [NL80211_ATTR_SSID] = { .type = NLA_BINARY,
 296                                 .len = IEEE80211_MAX_SSID_LEN },
 297         [NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 },
 298         [NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 },
 299         [NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG },
 300         [NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG },
 301         [NL80211_ATTR_USE_MFP] = { .type = NLA_U32 },
 302         [NL80211_ATTR_STA_FLAGS2] = {
 303                 .len = sizeof(struct nl80211_sta_flag_update),
 304         },
 305         [NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG },
 306         [NL80211_ATTR_CONTROL_PORT_ETHERTYPE] = { .type = NLA_U16 },
 307         [NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT] = { .type = NLA_FLAG },
 308         [NL80211_ATTR_PRIVACY] = { .type = NLA_FLAG },
 309         [NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 },
 310         [NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 },
 311         [NL80211_ATTR_PID] = { .type = NLA_U32 },
 312         [NL80211_ATTR_4ADDR] = { .type = NLA_U8 },
 313         [NL80211_ATTR_PMKID] = { .type = NLA_BINARY,
 314                                  .len = WLAN_PMKID_LEN },
 315         [NL80211_ATTR_DURATION] = { .type = NLA_U32 },
 316         [NL80211_ATTR_COOKIE] = { .type = NLA_U64 },
 317         [NL80211_ATTR_TX_RATES] = { .type = NLA_NESTED },
 318         [NL80211_ATTR_FRAME] = { .type = NLA_BINARY,
 319                                  .len = IEEE80211_MAX_DATA_LEN },
 320         [NL80211_ATTR_FRAME_MATCH] = { .type = NLA_BINARY, },
 321         [NL80211_ATTR_PS_STATE] = { .type = NLA_U32 },
 322         [NL80211_ATTR_CQM] = { .type = NLA_NESTED, },
 323         [NL80211_ATTR_LOCAL_STATE_CHANGE] = { .type = NLA_FLAG },
 324         [NL80211_ATTR_AP_ISOLATE] = { .type = NLA_U8 },
 325         [NL80211_ATTR_WIPHY_TX_POWER_SETTING] = { .type = NLA_U32 },
 326         [NL80211_ATTR_WIPHY_TX_POWER_LEVEL] = { .type = NLA_U32 },
 327         [NL80211_ATTR_FRAME_TYPE] = { .type = NLA_U16 },
 328         [NL80211_ATTR_WIPHY_ANTENNA_TX] = { .type = NLA_U32 },
 329         [NL80211_ATTR_WIPHY_ANTENNA_RX] = { .type = NLA_U32 },
 330         [NL80211_ATTR_MCAST_RATE] = { .type = NLA_U32 },
 331         [NL80211_ATTR_OFFCHANNEL_TX_OK] = { .type = NLA_FLAG },
 332         [NL80211_ATTR_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
 333         [NL80211_ATTR_WOWLAN_TRIGGERS] = { .type = NLA_NESTED },
 334         [NL80211_ATTR_STA_PLINK_STATE] = { .type = NLA_U8 },
 335         [NL80211_ATTR_SCHED_SCAN_INTERVAL] = { .type = NLA_U32 },
 336         [NL80211_ATTR_REKEY_DATA] = { .type = NLA_NESTED },
 337         [NL80211_ATTR_SCAN_SUPP_RATES] = { .type = NLA_NESTED },
 338         [NL80211_ATTR_HIDDEN_SSID] = { .type = NLA_U32 },
 339         [NL80211_ATTR_IE_PROBE_RESP] = { .type = NLA_BINARY,
 340                                          .len = IEEE80211_MAX_DATA_LEN },
 341         [NL80211_ATTR_IE_ASSOC_RESP] = { .type = NLA_BINARY,
 342                                          .len = IEEE80211_MAX_DATA_LEN },
 343         [NL80211_ATTR_ROAM_SUPPORT] = { .type = NLA_FLAG },
 344         [NL80211_ATTR_SCHED_SCAN_MATCH] = { .type = NLA_NESTED },
 345         [NL80211_ATTR_TX_NO_CCK_RATE] = { .type = NLA_FLAG },
 346         [NL80211_ATTR_TDLS_ACTION] = { .type = NLA_U8 },
 347         [NL80211_ATTR_TDLS_DIALOG_TOKEN] = { .type = NLA_U8 },
 348         [NL80211_ATTR_TDLS_OPERATION] = { .type = NLA_U8 },
 349         [NL80211_ATTR_TDLS_SUPPORT] = { .type = NLA_FLAG },
 350         [NL80211_ATTR_TDLS_EXTERNAL_SETUP] = { .type = NLA_FLAG },
 351         [NL80211_ATTR_DONT_WAIT_FOR_ACK] = { .type = NLA_FLAG },
 352         [NL80211_ATTR_PROBE_RESP] = { .type = NLA_BINARY,
 353                                       .len = IEEE80211_MAX_DATA_LEN },
 354         [NL80211_ATTR_DFS_REGION] = { .type = NLA_U8 },
 355         [NL80211_ATTR_DISABLE_HT] = { .type = NLA_FLAG },
 356         [NL80211_ATTR_HT_CAPABILITY_MASK] = {
 357                 .len = NL80211_HT_CAPABILITY_LEN
 358         },
 359         [NL80211_ATTR_NOACK_MAP] = { .type = NLA_U16 },
 360         [NL80211_ATTR_INACTIVITY_TIMEOUT] = { .type = NLA_U16 },
 361         [NL80211_ATTR_BG_SCAN_PERIOD] = { .type = NLA_U16 },
 362         [NL80211_ATTR_WDEV] = { .type = NLA_U64 },
 363         [NL80211_ATTR_USER_REG_HINT_TYPE] = { .type = NLA_U32 },
 364         [NL80211_ATTR_SAE_DATA] = { .type = NLA_BINARY, },
 365         [NL80211_ATTR_VHT_CAPABILITY] = { .len = NL80211_VHT_CAPABILITY_LEN },
 366         [NL80211_ATTR_SCAN_FLAGS] = { .type = NLA_U32 },
 367         [NL80211_ATTR_P2P_CTWINDOW] = { .type = NLA_U8 },
 368         [NL80211_ATTR_P2P_OPPPS] = { .type = NLA_U8 },
 369         [NL80211_ATTR_ACL_POLICY] = {. type = NLA_U32 },
 370         [NL80211_ATTR_MAC_ADDRS] = { .type = NLA_NESTED },
 371         [NL80211_ATTR_STA_CAPABILITY] = { .type = NLA_U16 },
 372         [NL80211_ATTR_STA_EXT_CAPABILITY] = { .type = NLA_BINARY, },
 373         [NL80211_ATTR_SPLIT_WIPHY_DUMP] = { .type = NLA_FLAG, },
 374         [NL80211_ATTR_DISABLE_VHT] = { .type = NLA_FLAG },
 375         [NL80211_ATTR_VHT_CAPABILITY_MASK] = {
 376                 .len = NL80211_VHT_CAPABILITY_LEN,
 377         },
 378         [NL80211_ATTR_MDID] = { .type = NLA_U16 },
 379         [NL80211_ATTR_IE_RIC] = { .type = NLA_BINARY,
 380                                   .len = IEEE80211_MAX_DATA_LEN },
 381 };
 382
 383 /* policy for the key attributes */
 384 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = {
 385         [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN },
 386         [NL80211_KEY_IDX] = { .type = NLA_U8 },
 387         [NL80211_KEY_CIPHER] = { .type = NLA_U32 },
 388         [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
 389         [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG },
 390         [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG },
 391         [NL80211_KEY_TYPE] = { .type = NLA_U32 },
 392         [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
 393 };
 394
 395 /* policy for the key default flags */
 396 static const struct nla_policy
 397 nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = {
 398         [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG },
 399         [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG },
 400 };
 401
 402 /* policy for WoWLAN attributes */
 403 static const struct nla_policy
 404 nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = {
 405         [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG },
 406         [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG },
 407         [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG },
 408         [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED },
 409         [NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG },
 410         [NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG },
 411         [NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG },
 412         [NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG },
 413         [NL80211_WOWLAN_TRIG_TCP_CONNECTION] = { .type = NLA_NESTED },
 414 };
 415
 416 static const struct nla_policy
 417 nl80211_wowlan_tcp_policy[NUM_NL80211_WOWLAN_TCP] = {
 418         [NL80211_WOWLAN_TCP_SRC_IPV4] = { .type = NLA_U32 },
 419         [NL80211_WOWLAN_TCP_DST_IPV4] = { .type = NLA_U32 },
 420         [NL80211_WOWLAN_TCP_DST_MAC] = { .len = ETH_ALEN },
 421         [NL80211_WOWLAN_TCP_SRC_PORT] = { .type = NLA_U16 },
 422         [NL80211_WOWLAN_TCP_DST_PORT] = { .type = NLA_U16 },
 423         [NL80211_WOWLAN_TCP_DATA_PAYLOAD] = { .len = 1 },
 424         [NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ] = {
 425                 .len = sizeof(struct nl80211_wowlan_tcp_data_seq)
 426         },
 427         [NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN] = {
 428                 .len = sizeof(struct nl80211_wowlan_tcp_data_token)
 429         },
 430         [NL80211_WOWLAN_TCP_DATA_INTERVAL] = { .type = NLA_U32 },
 431         [NL80211_WOWLAN_TCP_WAKE_PAYLOAD] = { .len = 1 },
 432         [NL80211_WOWLAN_TCP_WAKE_MASK] = { .len = 1 },
 433 };
 434
 435 /* policy for GTK rekey offload attributes */
 436 static const struct nla_policy
 437 nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = {
 438         [NL80211_REKEY_DATA_KEK] = { .len = NL80211_KEK_LEN },
 439         [NL80211_REKEY_DATA_KCK] = { .len = NL80211_KCK_LEN },
 440         [NL80211_REKEY_DATA_REPLAY_CTR] = { .len = NL80211_REPLAY_CTR_LEN },
 441 };
 442
 443 static const struct nla_policy
 444 nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = {
 445         [NL80211_SCHED_SCAN_MATCH_ATTR_SSID] = { .type = NLA_BINARY,
 446                                                  .len = IEEE80211_MAX_SSID_LEN },
 447         [NL80211_SCHED_SCAN_MATCH_ATTR_RSSI] = { .type = NLA_U32 },
 448 };
 449
 450 /* ifidx get helper */
 451 static int nl80211_get_ifidx(struct netlink_callback *cb)
 452 {
 453         int res;
 454
 455         res = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
 456                           nl80211_fam.attrbuf, nl80211_fam.maxattr,
 457                           nl80211_policy);
 458         if (res)
 459                 return res;
 460
 461         if (!nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX])
 462                 return -EINVAL;
 463
 464         res = nla_get_u32(nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX]);
 465         if (!res)
 466                 return -EINVAL;
 467         return res;
 468 }
 469
 470 static int nl80211_prepare_netdev_dump(struct sk_buff *skb,
 471                                        struct netlink_callback *cb,
 472                                        struct cfg80211_registered_device **rdev,
 473                                        struct net_device **dev)
 474 {
 475         int ifidx = cb->args[0];
 476         int err;
 477
 478         if (!ifidx)
 479                 ifidx = nl80211_get_ifidx(cb);
 480         if (ifidx < 0)
 481                 return ifidx;
 482
 483         cb->args[0] = ifidx;
 484
 485         rtnl_lock();
 486
 487         *dev = __dev_get_by_index(sock_net(skb->sk), ifidx);
 488         if (!*dev) {
 489                 err = -ENODEV;
 490                 goto out_rtnl;
 491         }
 492
 493         *rdev = cfg80211_get_dev_from_ifindex(sock_net(skb->sk), ifidx);
 494         if (IS_ERR(*rdev)) {
 495                 err = PTR_ERR(*rdev);
 496                 goto out_rtnl;
 497         }
 498
 499         return 0;
 500  out_rtnl:
 501         rtnl_unlock();
 502         return err;
 503 }
 504
 505 static void nl80211_finish_netdev_dump(struct cfg80211_registered_device *rdev)
 506 {
 507         cfg80211_unlock_rdev(rdev);
 508         rtnl_unlock();
 509 }
 510
 511 /* IE validation */
 512 static bool is_valid_ie_attr(const struct nlattr *attr)
 513 {
 514         const u8 *pos;
 515         int len;
 516
 517         if (!attr)
 518                 return true;
 519
 520         pos = nla_data(attr);
 521         len = nla_len(attr);
 522
 523         while (len) {
 524                 u8 elemlen;
 525
 526                 if (len < 2)
 527                         return false;
 528                 len -= 2;
 529
 530                 elemlen = pos[1];
 531                 if (elemlen > len)
 532                         return false;
 533
 534                 len -= elemlen;
 535                 pos += 2 + elemlen;
 536         }
 537
 538         return true;
 539 }
 540
 541 /* message building helper */
 542 static inline void *nl80211hdr_put(struct sk_buff *skb, u32 portid, u32 seq,
 543                                    int flags, u8 cmd)
 544 {
 545         /* since there is no private header just add the generic one */
 546         return genlmsg_put(skb, portid, seq, &nl80211_fam, flags, cmd);
 547 }
 548
 549 static int nl80211_msg_put_channel(struct sk_buff *msg,
 550                                    struct ieee80211_channel *chan,
 551                                    bool large)
 552 {
 553         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ,
 554                         chan->center_freq))
 555                 goto nla_put_failure;
 556
 557         if ((chan->flags & IEEE80211_CHAN_DISABLED) &&
 558             nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED))
 559                 goto nla_put_failure;
 560         if ((chan->flags & IEEE80211_CHAN_PASSIVE_SCAN) &&
 561             nla_put_flag(msg, NL80211_FREQUENCY_ATTR_PASSIVE_SCAN))
 562                 goto nla_put_failure;
 563         if ((chan->flags & IEEE80211_CHAN_NO_IBSS) &&
 564             nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IBSS))
 565                 goto nla_put_failure;
 566         if (chan->flags & IEEE80211_CHAN_RADAR) {
 567                 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR))
 568                         goto nla_put_failure;
 569                 if (large) {
 570                         u32 time;
 571
 572                         time = elapsed_jiffies_msecs(chan->dfs_state_entered);
 573
 574                         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_STATE,
 575                                         chan->dfs_state))
 576                                 goto nla_put_failure;
 577                         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_TIME,
 578                                         time))
 579                                 goto nla_put_failure;
 580                 }
 581         }
 582
 583         if (large) {
 584                 if ((chan->flags & IEEE80211_CHAN_NO_HT40MINUS) &&
 585                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_MINUS))
 586                         goto nla_put_failure;
 587                 if ((chan->flags & IEEE80211_CHAN_NO_HT40PLUS) &&
 588                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_PLUS))
 589                         goto nla_put_failure;
 590                 if ((chan->flags & IEEE80211_CHAN_NO_80MHZ) &&
 591                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_80MHZ))
 592                         goto nla_put_failure;
 593                 if ((chan->flags & IEEE80211_CHAN_NO_160MHZ) &&
 594                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_160MHZ))
 595                         goto nla_put_failure;
 596         }
 597
 598         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
 599                         DBM_TO_MBM(chan->max_power)))
 600                 goto nla_put_failure;
 601
 602         return 0;
 603
 604  nla_put_failure:
 605         return -ENOBUFS;
 606 }
 607
 608 /* netlink command implementations */
 609
 610 struct key_parse {
 611         struct key_params p;
 612         int idx;
 613         int type;
 614         bool def, defmgmt;
 615         bool def_uni, def_multi;
 616 };
 617
 618 static int nl80211_parse_key_new(struct nlattr *key, struct key_parse *k)
 619 {
 620         struct nlattr *tb[NL80211_KEY_MAX + 1];
 621         int err = nla_parse_nested(tb, NL80211_KEY_MAX, key,
 622                                    nl80211_key_policy);
 623         if (err)
 624                 return err;
 625
 626         k->def = !!tb[NL80211_KEY_DEFAULT];
 627         k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];
 628
 629         if (k->def) {
 630                 k->def_uni = true;
 631                 k->def_multi = true;
 632         }
 633         if (k->defmgmt)
 634                 k->def_multi = true;
 635
 636         if (tb[NL80211_KEY_IDX])
 637                 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);
 638
 639         if (tb[NL80211_KEY_DATA]) {
 640                 k->p.key = nla_data(tb[NL80211_KEY_DATA]);
 641                 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
 642         }
 643
 644         if (tb[NL80211_KEY_SEQ]) {
 645                 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
 646                 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
 647         }
 648
 649         if (tb[NL80211_KEY_CIPHER])
 650                 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);
 651
 652         if (tb[NL80211_KEY_TYPE]) {
 653                 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]);
 654                 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
 655                         return -EINVAL;
 656         }
 657
 658         if (tb[NL80211_KEY_DEFAULT_TYPES]) {
 659                 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
 660                 err = nla_parse_nested(kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
 661                                        tb[NL80211_KEY_DEFAULT_TYPES],
 662                                        nl80211_key_default_policy);
 663                 if (err)
 664                         return err;
 665
 666                 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
 667                 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
 668         }
 669
 670         return 0;
 671 }
 672
 673 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k)
 674 {
 675         if (info->attrs[NL80211_ATTR_KEY_DATA]) {
 676                 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
 677                 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
 678         }
 679
 680         if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
 681                 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
 682                 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
 683         }
 684
 685         if (info->attrs[NL80211_ATTR_KEY_IDX])
 686                 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
 687
 688         if (info->attrs[NL80211_ATTR_KEY_CIPHER])
 689                 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
 690
 691         k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
 692         k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT];
 693
 694         if (k->def) {
 695                 k->def_uni = true;
 696                 k->def_multi = true;
 697         }
 698         if (k->defmgmt)
 699                 k->def_multi = true;
 700
 701         if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
 702                 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
 703                 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
 704                         return -EINVAL;
 705         }
 706
 707         if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) {
 708                 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
 709                 int err = nla_parse_nested(
 710                                 kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
 711                                 info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES],
 712                                 nl80211_key_default_policy);
 713                 if (err)
 714                         return err;
 715
 716                 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
 717                 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
 718         }
 719
 720         return 0;
 721 }
 722
 723 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
 724 {
 725         int err;
 726
 727         memset(k, 0, sizeof(*k));
 728         k->idx = -1;
 729         k->type = -1;
 730
 731         if (info->attrs[NL80211_ATTR_KEY])
 732                 err = nl80211_parse_key_new(info->attrs[NL80211_ATTR_KEY], k);
 733         else
 734                 err = nl80211_parse_key_old(info, k);
 735
 736         if (err)
 737                 return err;
 738
 739         if (k->def && k->defmgmt)
 740                 return -EINVAL;
 741
 742         if (k->defmgmt) {
 743                 if (k->def_uni || !k->def_multi)
 744                         return -EINVAL;
 745         }
 746
 747         if (k->idx != -1) {
 748                 if (k->defmgmt) {
 749                         if (k->idx < 4 || k->idx > 5)
 750                                 return -EINVAL;
 751                 } else if (k->def) {
 752                         if (k->idx < 0 || k->idx > 3)
 753                                 return -EINVAL;
 754                 } else {
 755                         if (k->idx < 0 || k->idx > 5)
 756                                 return -EINVAL;
 757                 }
 758         }
 759
 760         return 0;
 761 }
 762
 763 static struct cfg80211_cached_keys *
 764 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
 765                        struct nlattr *keys, bool *no_ht)
 766 {
 767         struct key_parse parse;
 768         struct nlattr *key;
 769         struct cfg80211_cached_keys *result;
 770         int rem, err, def = 0;
 771
 772         result = kzalloc(sizeof(*result), GFP_KERNEL);
 773         if (!result)
 774                 return ERR_PTR(-ENOMEM);
 775
 776         result->def = -1;
 777         result->defmgmt = -1;
 778
 779         nla_for_each_nested(key, keys, rem) {
 780                 memset(&parse, 0, sizeof(parse));
 781                 parse.idx = -1;
 782
 783                 err = nl80211_parse_key_new(key, &parse);
 784                 if (err)
 785                         goto error;
 786                 err = -EINVAL;
 787                 if (!parse.p.key)
 788                         goto error;
 789                 if (parse.idx < 0 || parse.idx > 4)
 790                         goto error;
 791                 if (parse.def) {
 792                         if (def)
 793                                 goto error;
 794                         def = 1;
 795                         result->def = parse.idx;
 796                         if (!parse.def_uni || !parse.def_multi)
 797                                 goto error;
 798                 } else if (parse.defmgmt)
 799                         goto error;
 800                 err = cfg80211_validate_key_settings(rdev, &parse.p,
 801                                                      parse.idx, false, NULL);
 802                 if (err)
 803                         goto error;
 804                 result->params[parse.idx].cipher = parse.p.cipher;
 805                 result->params[parse.idx].key_len = parse.p.key_len;
 806                 result->params[parse.idx].key = result->data[parse.idx];
 807                 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
 808
 809                 if (parse.p.cipher == WLAN_CIPHER_SUITE_WEP40 ||
 810                     parse.p.cipher == WLAN_CIPHER_SUITE_WEP104) {
 811                         if (no_ht)
 812                                 *no_ht = true;
 813                 }
 814         }
 815
 816         return result;
 817  error:
 818         kfree(result);
 819         return ERR_PTR(err);
 820 }
 821
 822 static int nl80211_key_allowed(struct wireless_dev *wdev)
 823 {
 824         ASSERT_WDEV_LOCK(wdev);
 825
 826         switch (wdev->iftype) {
 827         case NL80211_IFTYPE_AP:
 828         case NL80211_IFTYPE_AP_VLAN:
 829         case NL80211_IFTYPE_P2P_GO:
 830         case NL80211_IFTYPE_MESH_POINT:
 831                 break;
 832         case NL80211_IFTYPE_ADHOC:
 833                 if (!wdev->current_bss)
 834                         return -ENOLINK;
 835                 break;
 836         case NL80211_IFTYPE_STATION:
 837         case NL80211_IFTYPE_P2P_CLIENT:
 838                 if (wdev->sme_state != CFG80211_SME_CONNECTED)
 839                         return -ENOLINK;
 840                 break;
 841         default:
 842                 return -EINVAL;
 843         }
 844
 845         return 0;
 846 }
 847
 848 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes)
 849 {
 850         struct nlattr *nl_modes = nla_nest_start(msg, attr);
 851         int i;
 852
 853         if (!nl_modes)
 854                 goto nla_put_failure;
 855
 856         i = 0;
 857         while (ifmodes) {
 858                 if ((ifmodes & 1) && nla_put_flag(msg, i))
 859                         goto nla_put_failure;
 860                 ifmodes >>= 1;
 861                 i++;
 862         }
 863
 864         nla_nest_end(msg, nl_modes);
 865         return 0;
 866
 867 nla_put_failure:
 868         return -ENOBUFS;
 869 }
 870
 871 static int nl80211_put_iface_combinations(struct wiphy *wiphy,
 872                                           struct sk_buff *msg,
 873                                           bool large)
 874 {
 875         struct nlattr *nl_combis;
 876         int i, j;
 877
 878         nl_combis = nla_nest_start(msg,
 879                                 NL80211_ATTR_INTERFACE_COMBINATIONS);
 880         if (!nl_combis)
 881                 goto nla_put_failure;
 882
 883         for (i = 0; i < wiphy->n_iface_combinations; i++) {
 884                 const struct ieee80211_iface_combination *c;
 885                 struct nlattr *nl_combi, *nl_limits;
 886
 887                 c = &wiphy->iface_combinations[i];
 888
 889                 nl_combi = nla_nest_start(msg, i + 1);
 890                 if (!nl_combi)
 891                         goto nla_put_failure;
 892
 893                 nl_limits = nla_nest_start(msg, NL80211_IFACE_COMB_LIMITS);
 894                 if (!nl_limits)
 895                         goto nla_put_failure;
 896
 897                 for (j = 0; j < c->n_limits; j++) {
 898                         struct nlattr *nl_limit;
 899
 900                         nl_limit = nla_nest_start(msg, j + 1);
 901                         if (!nl_limit)
 902                                 goto nla_put_failure;
 903                         if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX,
 904                                         c->limits[j].max))
 905                                 goto nla_put_failure;
 906                         if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES,
 907                                                 c->limits[j].types))
 908                                 goto nla_put_failure;
 909                         nla_nest_end(msg, nl_limit);
 910                 }
 911
 912                 nla_nest_end(msg, nl_limits);
 913
 914                 if (c->beacon_int_infra_match &&
 915                     nla_put_flag(msg, NL80211_IFACE_COMB_STA_AP_BI_MATCH))
 916                         goto nla_put_failure;
 917                 if (nla_put_u32(msg, NL80211_IFACE_COMB_NUM_CHANNELS,
 918                                 c->num_different_channels) ||
 919                     nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM,
 920                                 c->max_interfaces))
 921                         goto nla_put_failure;
 922                 if (large &&
 923                     nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS,
 924                                 c->radar_detect_widths))
 925                         goto nla_put_failure;
 926
 927                 nla_nest_end(msg, nl_combi);
 928         }
 929
 930         nla_nest_end(msg, nl_combis);
 931
 932         return 0;
 933 nla_put_failure:
 934         return -ENOBUFS;
 935 }
 936
 937 #ifdef CONFIG_PM
 938 static int nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device *rdev,
 939                                         struct sk_buff *msg)
 940 {
 941         const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan.tcp;
 942         struct nlattr *nl_tcp;
 943
 944         if (!tcp)
 945                 return 0;
 946
 947         nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
 948         if (!nl_tcp)
 949                 return -ENOBUFS;
 950
 951         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
 952                         tcp->data_payload_max))
 953                 return -ENOBUFS;
 954
 955         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
 956                         tcp->data_payload_max))
 957                 return -ENOBUFS;
 958
 959         if (tcp->seq && nla_put_flag(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ))
 960                 return -ENOBUFS;
 961
 962         if (tcp->tok && nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
 963                                 sizeof(*tcp->tok), tcp->tok))
 964                 return -ENOBUFS;
 965
 966         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
 967                         tcp->data_interval_max))
 968                 return -ENOBUFS;
 969
 970         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
 971                         tcp->wake_payload_max))
 972                 return -ENOBUFS;
 973
 974         nla_nest_end(msg, nl_tcp);
 975         return 0;
 976 }
 977
 978 static int nl80211_send_wowlan(struct sk_buff *msg,
 979                                struct cfg80211_registered_device *dev,
 980                                bool large)
 981 {
 982         struct nlattr *nl_wowlan;
 983
 984         if (!dev->wiphy.wowlan.flags && !dev->wiphy.wowlan.n_patterns)
 985                 return 0;
 986
 987         nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED);
 988         if (!nl_wowlan)
 989                 return -ENOBUFS;
 990
 991         if (((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_ANY) &&
 992              nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
 993             ((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_DISCONNECT) &&
 994              nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
 995             ((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_MAGIC_PKT) &&
 996              nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
 997             ((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) &&
 998              nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) ||
 999             ((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) &&
1000              nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
1001             ((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) &&
1002              nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
1003             ((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) &&
1004              nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
1005             ((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_RFKILL_RELEASE) &&
1006              nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
1007                 return -ENOBUFS;
1008
1009         if (dev->wiphy.wowlan.n_patterns) {
1010                 struct nl80211_wowlan_pattern_support pat = {
1011                         .max_patterns = dev->wiphy.wowlan.n_patterns,
1012                         .min_pattern_len = dev->wiphy.wowlan.pattern_min_len,
1013                         .max_pattern_len = dev->wiphy.wowlan.pattern_max_len,
1014                         .max_pkt_offset = dev->wiphy.wowlan.max_pkt_offset,
1015                 };
1016
1017                 if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
1018                             sizeof(pat), &pat))
1019                         return -ENOBUFS;
1020         }
1021
1022         if (large && nl80211_send_wowlan_tcp_caps(dev, msg))
1023                 return -ENOBUFS;
1024
1025         nla_nest_end(msg, nl_wowlan);
1026
1027         return 0;
1028 }
1029 #endif
1030
1031 static int nl80211_send_band_rateinfo(struct sk_buff *msg,
1032                                       struct ieee80211_supported_band *sband)
1033 {
1034         struct nlattr *nl_rates, *nl_rate;
1035         struct ieee80211_rate *rate;
1036         int i;
1037
1038         /* add HT info */
1039         if (sband->ht_cap.ht_supported &&
1040             (nla_put(msg, NL80211_BAND_ATTR_HT_MCS_SET,
1041                      sizeof(sband->ht_cap.mcs),
1042                      &sband->ht_cap.mcs) ||
1043              nla_put_u16(msg, NL80211_BAND_ATTR_HT_CAPA,
1044                          sband->ht_cap.cap) ||
1045              nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
1046                         sband->ht_cap.ampdu_factor) ||
1047              nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
1048                         sband->ht_cap.ampdu_density)))
1049                 return -ENOBUFS;
1050
1051         /* add VHT info */
1052         if (sband->vht_cap.vht_supported &&
1053             (nla_put(msg, NL80211_BAND_ATTR_VHT_MCS_SET,
1054                      sizeof(sband->vht_cap.vht_mcs),
1055                      &sband->vht_cap.vht_mcs) ||
1056              nla_put_u32(msg, NL80211_BAND_ATTR_VHT_CAPA,
1057                          sband->vht_cap.cap)))
1058                 return -ENOBUFS;
1059
1060         /* add bitrates */
1061         nl_rates = nla_nest_start(msg, NL80211_BAND_ATTR_RATES);
1062         if (!nl_rates)
1063                 return -ENOBUFS;
1064
1065         for (i = 0; i < sband->n_bitrates; i++) {
1066                 nl_rate = nla_nest_start(msg, i);
1067                 if (!nl_rate)
1068                         return -ENOBUFS;
1069
1070                 rate = &sband->bitrates[i];
1071                 if (nla_put_u32(msg, NL80211_BITRATE_ATTR_RATE,
1072                                 rate->bitrate))
1073                         return -ENOBUFS;
1074                 if ((rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) &&
1075                     nla_put_flag(msg,
1076                                  NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE))
1077                         return -ENOBUFS;
1078
1079                 nla_nest_end(msg, nl_rate);
1080         }
1081
1082         nla_nest_end(msg, nl_rates);
1083
1084         return 0;
1085 }
1086
1087 static int
1088 nl80211_send_mgmt_stypes(struct sk_buff *msg,
1089                          const struct ieee80211_txrx_stypes *mgmt_stypes)
1090 {
1091         u16 stypes;
1092         struct nlattr *nl_ftypes, *nl_ifs;
1093         enum nl80211_iftype ift;
1094         int i;
1095
1096         if (!mgmt_stypes)
1097                 return 0;
1098
1099         nl_ifs = nla_nest_start(msg, NL80211_ATTR_TX_FRAME_TYPES);
1100         if (!nl_ifs)
1101                 return -ENOBUFS;
1102
1103         for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1104                 nl_ftypes = nla_nest_start(msg, ift);
1105                 if (!nl_ftypes)
1106                         return -ENOBUFS;
1107                 i = 0;
1108                 stypes = mgmt_stypes[ift].tx;
1109                 while (stypes) {
1110                         if ((stypes & 1) &&
1111                             nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1112                                         (i << 4) | IEEE80211_FTYPE_MGMT))
1113                                 return -ENOBUFS;
1114                         stypes >>= 1;
1115                         i++;
1116                 }
1117                 nla_nest_end(msg, nl_ftypes);
1118         }
1119
1120         nla_nest_end(msg, nl_ifs);
1121
1122         nl_ifs = nla_nest_start(msg, NL80211_ATTR_RX_FRAME_TYPES);
1123         if (!nl_ifs)
1124                 return -ENOBUFS;
1125
1126         for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1127                 nl_ftypes = nla_nest_start(msg, ift);
1128                 if (!nl_ftypes)
1129                         return -ENOBUFS;
1130                 i = 0;
1131                 stypes = mgmt_stypes[ift].rx;
1132                 while (stypes) {
1133                         if ((stypes & 1) &&
1134                             nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1135                                         (i << 4) | IEEE80211_FTYPE_MGMT))
1136                                 return -ENOBUFS;
1137                         stypes >>= 1;
1138                         i++;
1139                 }
1140                 nla_nest_end(msg, nl_ftypes);
1141         }
1142         nla_nest_end(msg, nl_ifs);
1143
1144         return 0;
1145 }
1146
1147 static int nl80211_send_wiphy(struct cfg80211_registered_device *dev,
1148                               struct sk_buff *msg, u32 portid, u32 seq,
1149                               int flags, bool split, long *split_start,
1150                               long *band_start, long *chan_start)
1151 {
1152         void *hdr;
1153         struct nlattr *nl_bands, *nl_band;
1154         struct nlattr *nl_freqs, *nl_freq;
1155         struct nlattr *nl_cmds;
1156         enum ieee80211_band band;
1157         struct ieee80211_channel *chan;
1158         int i;
1159         const struct ieee80211_txrx_stypes *mgmt_stypes =
1160                                 dev->wiphy.mgmt_stypes;
1161         long start = 0, start_chan = 0, start_band = 0;
1162         u32 features;
1163
1164         hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_WIPHY);
1165         if (!hdr)
1166                 return -ENOBUFS;
1167
1168         /* allow always using the variables */
1169         if (!split) {
1170                 split_start = &start;
1171                 band_start = &start_band;
1172                 chan_start = &start_chan;
1173         }
1174
1175         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, dev->wiphy_idx) ||
1176             nla_put_string(msg, NL80211_ATTR_WIPHY_NAME,
1177                            wiphy_name(&dev->wiphy)) ||
1178             nla_put_u32(msg, NL80211_ATTR_GENERATION,
1179                         cfg80211_rdev_list_generation))
1180                 goto nla_put_failure;
1181
1182         switch (*split_start) {
1183         case 0:
1184                 if (nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
1185                                dev->wiphy.retry_short) ||
1186                     nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
1187                                dev->wiphy.retry_long) ||
1188                     nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
1189                                 dev->wiphy.frag_threshold) ||
1190                     nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
1191                                 dev->wiphy.rts_threshold) ||
1192                     nla_put_u8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
1193                                dev->wiphy.coverage_class) ||
1194                     nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
1195                                dev->wiphy.max_scan_ssids) ||
1196                     nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS,
1197                                dev->wiphy.max_sched_scan_ssids) ||
1198                     nla_put_u16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
1199                                 dev->wiphy.max_scan_ie_len) ||
1200                     nla_put_u16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN,
1201                                 dev->wiphy.max_sched_scan_ie_len) ||
1202                     nla_put_u8(msg, NL80211_ATTR_MAX_MATCH_SETS,
1203                                dev->wiphy.max_match_sets))
1204                         goto nla_put_failure;
1205
1206                 if ((dev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) &&
1207                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_IBSS_RSN))
1208                         goto nla_put_failure;
1209                 if ((dev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) &&
1210                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_MESH_AUTH))
1211                         goto nla_put_failure;
1212                 if ((dev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
1213                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_AP_UAPSD))
1214                         goto nla_put_failure;
1215                 if ((dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) &&
1216                     nla_put_flag(msg, NL80211_ATTR_ROAM_SUPPORT))
1217                         goto nla_put_failure;
1218                 if ((dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) &&
1219                     nla_put_flag(msg, NL80211_ATTR_TDLS_SUPPORT))
1220                         goto nla_put_failure;
1221                 if ((dev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) &&
1222                     nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP))
1223                         goto nla_put_failure;
1224
1225                 (*split_start)++;
1226                 if (split)
1227                         break;
1228         case 1:
1229                 if (nla_put(msg, NL80211_ATTR_CIPHER_SUITES,
1230                             sizeof(u32) * dev->wiphy.n_cipher_suites,
1231                             dev->wiphy.cipher_suites))
1232                         goto nla_put_failure;
1233
1234                 if (nla_put_u8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
1235                                dev->wiphy.max_num_pmkids))
1236                         goto nla_put_failure;
1237
1238                 if ((dev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
1239                     nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE))
1240                         goto nla_put_failure;
1241
1242                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX,
1243                                 dev->wiphy.available_antennas_tx) ||
1244                     nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX,
1245                                 dev->wiphy.available_antennas_rx))
1246                         goto nla_put_failure;
1247
1248                 if ((dev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) &&
1249                     nla_put_u32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD,
1250                                 dev->wiphy.probe_resp_offload))
1251                         goto nla_put_failure;
1252
1253                 if ((dev->wiphy.available_antennas_tx ||
1254                      dev->wiphy.available_antennas_rx) &&
1255                     dev->ops->get_antenna) {
1256                         u32 tx_ant = 0, rx_ant = 0;
1257                         int res;
1258                         res = rdev_get_antenna(dev, &tx_ant, &rx_ant);
1259                         if (!res) {
1260                                 if (nla_put_u32(msg,
1261                                                 NL80211_ATTR_WIPHY_ANTENNA_TX,
1262                                                 tx_ant) ||
1263                                     nla_put_u32(msg,
1264                                                 NL80211_ATTR_WIPHY_ANTENNA_RX,
1265                                                 rx_ant))
1266                                         goto nla_put_failure;
1267                         }
1268                 }
1269
1270                 (*split_start)++;
1271                 if (split)
1272                         break;
1273         case 2:
1274                 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES,
1275                                         dev->wiphy.interface_modes))
1276                                 goto nla_put_failure;
1277                 (*split_start)++;
1278                 if (split)
1279                         break;
1280         case 3:
1281                 nl_bands = nla_nest_start(msg, NL80211_ATTR_WIPHY_BANDS);
1282                 if (!nl_bands)
1283                         goto nla_put_failure;
1284
1285                 for (band = *band_start; band < IEEE80211_NUM_BANDS; band++) {
1286                         struct ieee80211_supported_band *sband;
1287
1288                         sband = dev->wiphy.bands[band];
1289
1290                         if (!sband)
1291                                 continue;
1292
1293                         nl_band = nla_nest_start(msg, band);
1294                         if (!nl_band)
1295                                 goto nla_put_failure;
1296
1297                         switch (*chan_start) {
1298                         case 0:
1299                                 if (nl80211_send_band_rateinfo(msg, sband))
1300                                         goto nla_put_failure;
1301                                 (*chan_start)++;
1302                                 if (split)
1303                                         break;
1304                         default:
1305                                 /* add frequencies */
1306                                 nl_freqs = nla_nest_start(
1307                                         msg, NL80211_BAND_ATTR_FREQS);
1308                                 if (!nl_freqs)
1309                                         goto nla_put_failure;
1310
1311                                 for (i = *chan_start - 1;
1312                                      i < sband->n_channels;
1313                                      i++) {
1314                                         nl_freq = nla_nest_start(msg, i);
1315                                         if (!nl_freq)
1316                                                 goto nla_put_failure;
1317
1318                                         chan = &sband->channels[i];
1319
1320                                         if (nl80211_msg_put_channel(msg, chan,
1321                                                                     split))
1322                                                 goto nla_put_failure;
1323
1324                                         nla_nest_end(msg, nl_freq);
1325                                         if (split)
1326                                                 break;
1327                                 }
1328                                 if (i < sband->n_channels)
1329                                         *chan_start = i + 2;
1330                                 else
1331                                         *chan_start = 0;
1332                                 nla_nest_end(msg, nl_freqs);
1333                         }
1334
1335                         nla_nest_end(msg, nl_band);
1336
1337                         if (split) {
1338                                 /* start again here */
1339                                 if (*chan_start)
1340                                         band--;
1341                                 break;
1342                         }
1343                 }
1344                 nla_nest_end(msg, nl_bands);
1345
1346                 if (band < IEEE80211_NUM_BANDS)
1347                         *band_start = band + 1;
1348                 else
1349                         *band_start = 0;
1350
1351                 /* if bands & channels are done, continue outside */
1352                 if (*band_start == 0 && *chan_start == 0)
1353                         (*split_start)++;
1354                 if (split)
1355                         break;
1356         case 4:
1357                 nl_cmds = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_COMMANDS);
1358                 if (!nl_cmds)
1359                         goto nla_put_failure;
1360
1361                 i = 0;
1362 #define CMD(op, n)                                                      \
1363                  do {                                                   \
1364                         if (dev->ops->op) {                             \
1365                                 i++;                                    \
1366                                 if (nla_put_u32(msg, i, NL80211_CMD_ ## n)) \
1367                                         goto nla_put_failure;           \
1368                         }                                               \
1369                 } while (0)
1370
1371                 CMD(add_virtual_intf, NEW_INTERFACE);
1372                 CMD(change_virtual_intf, SET_INTERFACE);
1373                 CMD(add_key, NEW_KEY);
1374                 CMD(start_ap, START_AP);
1375                 CMD(add_station, NEW_STATION);
1376                 CMD(add_mpath, NEW_MPATH);
1377                 CMD(update_mesh_config, SET_MESH_CONFIG);
1378                 CMD(change_bss, SET_BSS);
1379                 CMD(auth, AUTHENTICATE);
1380                 CMD(assoc, ASSOCIATE);
1381                 CMD(deauth, DEAUTHENTICATE);
1382                 CMD(disassoc, DISASSOCIATE);
1383                 CMD(join_ibss, JOIN_IBSS);
1384                 CMD(join_mesh, JOIN_MESH);
1385                 CMD(set_pmksa, SET_PMKSA);
1386                 CMD(del_pmksa, DEL_PMKSA);
1387                 CMD(flush_pmksa, FLUSH_PMKSA);
1388                 if (dev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)
1389                         CMD(remain_on_channel, REMAIN_ON_CHANNEL);
1390                 CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
1391                 CMD(mgmt_tx, FRAME);
1392                 CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL);
1393                 if (dev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
1394                         i++;
1395                         if (nla_put_u32(msg, i, NL80211_CMD_SET_WIPHY_NETNS))
1396                                 goto nla_put_failure;
1397                 }
1398                 if (dev->ops->set_monitor_channel || dev->ops->start_ap ||
1399                     dev->ops->join_mesh) {
1400                         i++;
1401                         if (nla_put_u32(msg, i, NL80211_CMD_SET_CHANNEL))
1402                                 goto nla_put_failure;
1403                 }
1404                 CMD(set_wds_peer, SET_WDS_PEER);
1405                 if (dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) {
1406                         CMD(tdls_mgmt, TDLS_MGMT);
1407                         CMD(tdls_oper, TDLS_OPER);
1408                 }
1409                 if (dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN)
1410                         CMD(sched_scan_start, START_SCHED_SCAN);
1411                 CMD(probe_client, PROBE_CLIENT);
1412                 CMD(set_noack_map, SET_NOACK_MAP);
1413                 if (dev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) {
1414                         i++;
1415                         if (nla_put_u32(msg, i, NL80211_CMD_REGISTER_BEACONS))
1416                                 goto nla_put_failure;
1417                 }
1418                 CMD(start_p2p_device, START_P2P_DEVICE);
1419                 CMD(set_mcast_rate, SET_MCAST_RATE);
1420
1421 #ifdef CONFIG_NL80211_TESTMODE
1422                 CMD(testmode_cmd, TESTMODE);
1423 #endif
1424
1425 #undef CMD
1426
1427                 if (dev->ops->connect || dev->ops->auth) {
1428                         i++;
1429                         if (nla_put_u32(msg, i, NL80211_CMD_CONNECT))
1430                                 goto nla_put_failure;
1431                 }
1432
1433                 if (dev->ops->disconnect || dev->ops->deauth) {
1434                         i++;
1435                         if (nla_put_u32(msg, i, NL80211_CMD_DISCONNECT))
1436                                 goto nla_put_failure;
1437                 }
1438
1439                 nla_nest_end(msg, nl_cmds);
1440                 (*split_start)++;
1441                 if (split)
1442                         break;
1443         case 5:
1444                 if (dev->ops->remain_on_channel &&
1445                     (dev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) &&
1446                     nla_put_u32(msg,
1447                                 NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
1448                                 dev->wiphy.max_remain_on_channel_duration))
1449                         goto nla_put_failure;
1450
1451                 if ((dev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) &&
1452                     nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK))
1453                         goto nla_put_failure;
1454
1455                 if (nl80211_send_mgmt_stypes(msg, mgmt_stypes))
1456                         goto nla_put_failure;
1457                 (*split_start)++;
1458                 if (split)
1459                         break;
1460         case 6:
1461 #ifdef CONFIG_PM
1462                 if (nl80211_send_wowlan(msg, dev, split))
1463                         goto nla_put_failure;
1464                 (*split_start)++;
1465                 if (split)
1466                         break;
1467 #else
1468                 (*split_start)++;
1469 #endif
1470         case 7:
1471                 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES,
1472                                         dev->wiphy.software_iftypes))
1473                         goto nla_put_failure;
1474
1475                 if (nl80211_put_iface_combinations(&dev->wiphy, msg, split))
1476                         goto nla_put_failure;
1477
1478                 (*split_start)++;
1479                 if (split)
1480                         break;
1481         case 8:
1482                 if ((dev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) &&
1483                     nla_put_u32(msg, NL80211_ATTR_DEVICE_AP_SME,
1484                                 dev->wiphy.ap_sme_capa))
1485                         goto nla_put_failure;
1486
1487                 features = dev->wiphy.features;
1488                 /*
1489                  * We can only add the per-channel limit information if the
1490                  * dump is split, otherwise it makes it too big. Therefore
1491                  * only advertise it in that case.
1492                  */
1493                 if (split)
1494                         features |= NL80211_FEATURE_ADVERTISE_CHAN_LIMITS;
1495                 if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS, features))
1496                         goto nla_put_failure;
1497
1498                 if (dev->wiphy.ht_capa_mod_mask &&
1499                     nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK,
1500                             sizeof(*dev->wiphy.ht_capa_mod_mask),
1501                             dev->wiphy.ht_capa_mod_mask))
1502                         goto nla_put_failure;
1503
1504                 if (dev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME &&
1505                     dev->wiphy.max_acl_mac_addrs &&
1506                     nla_put_u32(msg, NL80211_ATTR_MAC_ACL_MAX,
1507                                 dev->wiphy.max_acl_mac_addrs))
1508                         goto nla_put_failure;
1509
1510                 /*
1511                  * Any information below this point is only available to
1512                  * applications that can deal with it being split. This
1513                  * helps ensure that newly added capabilities don't break
1514                  * older tools by overrunning their buffers.
1515                  *
1516                  * We still increment split_start so that in the split
1517                  * case we'll continue with more data in the next round,
1518                  * but break unconditionally so unsplit data stops here.
1519                  */
1520                 (*split_start)++;
1521                 break;
1522         case 9:
1523                 if (dev->wiphy.extended_capabilities &&
1524                     (nla_put(msg, NL80211_ATTR_EXT_CAPA,
1525                              dev->wiphy.extended_capabilities_len,
1526                              dev->wiphy.extended_capabilities) ||
1527                      nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
1528                              dev->wiphy.extended_capabilities_len,
1529                              dev->wiphy.extended_capabilities_mask)))
1530                         goto nla_put_failure;
1531
1532                 if (dev->wiphy.vht_capa_mod_mask &&
1533                     nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK,
1534                             sizeof(*dev->wiphy.vht_capa_mod_mask),
1535                             dev->wiphy.vht_capa_mod_mask))
1536                         goto nla_put_failure;
1537
1538                 /* done */
1539                 *split_start = 0;
1540                 break;
1541         }
1542         return genlmsg_end(msg, hdr);
1543
1544  nla_put_failure:
1545         genlmsg_cancel(msg, hdr);
1546         return -EMSGSIZE;
1547 }
1548
1549 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
1550 {
1551         int idx = 0, ret;
1552         int start = cb->args[0];
1553         struct cfg80211_registered_device *dev;
1554         s64 filter_wiphy = -1;
1555         bool split = false;
1556         struct nlattr **tb = nl80211_fam.attrbuf;
1557         int res;
1558
1559         mutex_lock(&cfg80211_mutex);
1560         res = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
1561                           tb, nl80211_fam.maxattr, nl80211_policy);
1562         if (res == 0) {
1563                 split = tb[NL80211_ATTR_SPLIT_WIPHY_DUMP];
1564                 if (tb[NL80211_ATTR_WIPHY])
1565                         filter_wiphy = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
1566                 if (tb[NL80211_ATTR_WDEV])
1567                         filter_wiphy = nla_get_u64(tb[NL80211_ATTR_WDEV]) >> 32;
1568                 if (tb[NL80211_ATTR_IFINDEX]) {
1569                         struct net_device *netdev;
1570                         int ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
1571
1572                         netdev = dev_get_by_index(sock_net(skb->sk), ifidx);
1573                         if (!netdev) {
1574                                 mutex_unlock(&cfg80211_mutex);
1575                                 return -ENODEV;
1576                         }
1577                         if (netdev->ieee80211_ptr) {
1578                                 dev = wiphy_to_dev(
1579                                         netdev->ieee80211_ptr->wiphy);
1580                                 filter_wiphy = dev->wiphy_idx;
1581                         }
1582                         dev_put(netdev);
1583                 }
1584         }
1585
1586         list_for_each_entry(dev, &cfg80211_rdev_list, list) {
1587                 if (!net_eq(wiphy_net(&dev->wiphy), sock_net(skb->sk)))
1588                         continue;
1589                 if (++idx <= start)
1590                         continue;
1591                 if (filter_wiphy != -1 && dev->wiphy_idx != filter_wiphy)
1592                         continue;
1593                 /* attempt to fit multiple wiphy data chunks into the skb */
1594                 do {
1595                         ret = nl80211_send_wiphy(dev, skb,
1596                                                  NETLINK_CB(cb->skb).portid,
1597                                                  cb->nlh->nlmsg_seq,
1598                                                  NLM_F_MULTI,
1599                                                  split, &cb->args[1],
1600                                                  &cb->args[2],
1601                                                  &cb->args[3]);
1602                         if (ret < 0) {
1603                                 /*
1604                                  * If sending the wiphy data didn't fit (ENOBUFS
1605                                  * or EMSGSIZE returned), this SKB is still
1606                                  * empty (so it's not too big because another
1607                                  * wiphy dataset is already in the skb) and
1608                                  * we've not tried to adjust the dump allocation
1609                                  * yet ... then adjust the alloc size to be
1610                                  * bigger, and return 1 but with the empty skb.
1611                                  * This results in an empty message being RX'ed
1612                                  * in userspace, but that is ignored.
1613                                  *
1614                                  * We can then retry with the larger buffer.
1615                                  */
1616                                 if ((ret == -ENOBUFS || ret == -EMSGSIZE) &&
1617                                     !skb->len &&
1618                                     cb->min_dump_alloc < 4096) {
1619                                         cb->min_dump_alloc = 4096;
1620                                         mutex_unlock(&cfg80211_mutex);
1621                                         return 1;
1622                                 }
1623                                 idx--;
1624                                 break;
1625                         }
1626                 } while (cb->args[1] > 0);
1627                 break;
1628         }
1629         mutex_unlock(&cfg80211_mutex);
1630
1631         cb->args[0] = idx;
1632
1633         return skb->len;
1634 }
1635
1636 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
1637 {
1638         struct sk_buff *msg;
1639         struct cfg80211_registered_device *dev = info->user_ptr[0];
1640
1641         msg = nlmsg_new(4096, GFP_KERNEL);
1642         if (!msg)
1643                 return -ENOMEM;
1644
1645         if (nl80211_send_wiphy(dev, msg, info->snd_portid, info->snd_seq, 0,
1646                                false, NULL, NULL, NULL) < 0) {
1647                 nlmsg_free(msg);
1648                 return -ENOBUFS;
1649         }
1650
1651         return genlmsg_reply(msg, info);
1652 }
1653
1654 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
1655         [NL80211_TXQ_ATTR_QUEUE]                = { .type = NLA_U8 },
1656         [NL80211_TXQ_ATTR_TXOP]                 = { .type = NLA_U16 },
1657         [NL80211_TXQ_ATTR_CWMIN]                = { .type = NLA_U16 },
1658         [NL80211_TXQ_ATTR_CWMAX]                = { .type = NLA_U16 },
1659         [NL80211_TXQ_ATTR_AIFS]                 = { .type = NLA_U8 },
1660 };
1661
1662 static int parse_txq_params(struct nlattr *tb[],
1663                             struct ieee80211_txq_params *txq_params)
1664 {
1665         if (!tb[NL80211_TXQ_ATTR_AC] || !tb[NL80211_TXQ_ATTR_TXOP] ||
1666             !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
1667             !tb[NL80211_TXQ_ATTR_AIFS])
1668                 return -EINVAL;
1669
1670         txq_params->ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]);
1671         txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
1672         txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
1673         txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
1674         txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
1675
1676         if (txq_params->ac >= NL80211_NUM_ACS)
1677                 return -EINVAL;
1678
1679         return 0;
1680 }
1681
1682 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
1683 {
1684         /*
1685          * You can only set the channel explicitly for WDS interfaces,
1686          * all others have their channel managed via their respective
1687          * "establish a connection" command (connect, join, ...)
1688          *
1689          * For AP/GO and mesh mode, the channel can be set with the
1690          * channel userspace API, but is only stored and passed to the
1691          * low-level driver when the AP starts or the mesh is joined.
1692          * This is for backward compatibility, userspace can also give
1693          * the channel in the start-ap or join-mesh commands instead.
1694          *
1695          * Monitors are special as they are normally slaved to
1696          * whatever else is going on, so they have their own special
1697          * operation to set the monitor channel if possible.
1698          */
1699         return !wdev ||
1700                 wdev->iftype == NL80211_IFTYPE_AP ||
1701                 wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
1702                 wdev->iftype == NL80211_IFTYPE_MONITOR ||
1703                 wdev->iftype == NL80211_IFTYPE_P2P_GO;
1704 }
1705
1706 static int nl80211_parse_chandef(struct cfg80211_registered_device *rdev,
1707                                  struct genl_info *info,
1708                                  struct cfg80211_chan_def *chandef)
1709 {
1710         u32 control_freq;
1711
1712         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
1713                 return -EINVAL;
1714
1715         control_freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
1716
1717         chandef->chan = ieee80211_get_channel(&rdev->wiphy, control_freq);
1718         chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
1719         chandef->center_freq1 = control_freq;
1720         chandef->center_freq2 = 0;
1721
1722         /* Primary channel not allowed */
1723         if (!chandef->chan || chandef->chan->flags & IEEE80211_CHAN_DISABLED)
1724                 return -EINVAL;
1725
1726         if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
1727                 enum nl80211_channel_type chantype;
1728
1729                 chantype = nla_get_u32(
1730                                 info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
1731
1732                 switch (chantype) {
1733                 case NL80211_CHAN_NO_HT:
1734                 case NL80211_CHAN_HT20:
1735                 case NL80211_CHAN_HT40PLUS:
1736                 case NL80211_CHAN_HT40MINUS:
1737                         cfg80211_chandef_create(chandef, chandef->chan,
1738                                                 chantype);
1739                         break;
1740                 default:
1741                         return -EINVAL;
1742                 }
1743         } else if (info->attrs[NL80211_ATTR_CHANNEL_WIDTH]) {
1744                 chandef->width =
1745                         nla_get_u32(info->attrs[NL80211_ATTR_CHANNEL_WIDTH]);
1746                 if (info->attrs[NL80211_ATTR_CENTER_FREQ1])
1747                         chandef->center_freq1 =
1748                                 nla_get_u32(
1749                                         info->attrs[NL80211_ATTR_CENTER_FREQ1]);
1750                 if (info->attrs[NL80211_ATTR_CENTER_FREQ2])
1751                         chandef->center_freq2 =
1752                                 nla_get_u32(
1753                                         info->attrs[NL80211_ATTR_CENTER_FREQ2]);
1754         }
1755
1756         if (!cfg80211_chandef_valid(chandef))
1757                 return -EINVAL;
1758
1759         if (!cfg80211_chandef_usable(&rdev->wiphy, chandef,
1760                                      IEEE80211_CHAN_DISABLED))
1761                 return -EINVAL;
1762
1763         return 0;
1764 }
1765
1766 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
1767                                  struct wireless_dev *wdev,
1768                                  struct genl_info *info)
1769 {
1770         struct cfg80211_chan_def chandef;
1771         int result;
1772         enum nl80211_iftype iftype = NL80211_IFTYPE_MONITOR;
1773
1774         if (wdev)
1775                 iftype = wdev->iftype;
1776
1777         if (!nl80211_can_set_dev_channel(wdev))
1778                 return -EOPNOTSUPP;
1779
1780         result = nl80211_parse_chandef(rdev, info, &chandef);
1781         if (result)
1782                 return result;
1783
1784         mutex_lock(&rdev->devlist_mtx);
1785         switch (iftype) {
1786         case NL80211_IFTYPE_AP:
1787         case NL80211_IFTYPE_P2P_GO:
1788                 if (wdev->beacon_interval) {
1789                         result = -EBUSY;
1790                         break;
1791                 }
1792                 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &chandef)) {
1793                         result = -EINVAL;
1794                         break;
1795                 }
1796                 wdev->preset_chandef = chandef;
1797                 result = 0;
1798                 break;
1799         case NL80211_IFTYPE_MESH_POINT:
1800                 result = cfg80211_set_mesh_channel(rdev, wdev, &chandef);
1801                 break;
1802         case NL80211_IFTYPE_MONITOR:
1803                 result = cfg80211_set_monitor_channel(rdev, &chandef);
1804                 break;
1805         default:
1806                 result = -EINVAL;
1807         }
1808         mutex_unlock(&rdev->devlist_mtx);
1809
1810         return result;
1811 }
1812
1813 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
1814 {
1815         struct cfg80211_registered_device *rdev = info->user_ptr[0];
1816         struct net_device *netdev = info->user_ptr[1];
1817
1818         return __nl80211_set_channel(rdev, netdev->ieee80211_ptr, info);
1819 }
1820
1821 static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info)
1822 {
1823         struct cfg80211_registered_device *rdev = info->user_ptr[0];
1824         struct net_device *dev = info->user_ptr[1];
1825         struct wireless_dev *wdev = dev->ieee80211_ptr;
1826         const u8 *bssid;
1827
1828         if (!info->attrs[NL80211_ATTR_MAC])
1829                 return -EINVAL;
1830
1831         if (netif_running(dev))
1832                 return -EBUSY;
1833
1834         if (!rdev->ops->set_wds_peer)
1835                 return -EOPNOTSUPP;
1836
1837         if (wdev->iftype != NL80211_IFTYPE_WDS)
1838                 return -EOPNOTSUPP;
1839
1840         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
1841         return rdev_set_wds_peer(rdev, dev, bssid);
1842 }
1843
1844
1845 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
1846 {
1847         struct cfg80211_registered_device *rdev;
1848         struct net_device *netdev = NULL;
1849         struct wireless_dev *wdev;
1850         int result = 0, rem_txq_params = 0;
1851         struct nlattr *nl_txq_params;
1852         u32 changed;
1853         u8 retry_short = 0, retry_long = 0;
1854         u32 frag_threshold = 0, rts_threshold = 0;
1855         u8 coverage_class = 0;
1856
1857         /*
1858          * Try to find the wiphy and netdev. Normally this
1859          * function shouldn't need the netdev, but this is
1860          * done for backward compatibility -- previously
1861          * setting the channel was done per wiphy, but now
1862          * it is per netdev. Previous userland like hostapd
1863          * also passed a netdev to set_wiphy, so that it is
1864          * possible to let that go to the right netdev!
1865          */
1866         mutex_lock(&cfg80211_mutex);
1867
1868         if (info->attrs[NL80211_ATTR_IFINDEX]) {
1869                 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
1870
1871                 netdev = dev_get_by_index(genl_info_net(info), ifindex);
1872                 if (netdev && netdev->ieee80211_ptr) {
1873                         rdev = wiphy_to_dev(netdev->ieee80211_ptr->wiphy);
1874                         mutex_lock(&rdev->mtx);
1875                 } else
1876                         netdev = NULL;
1877         }
1878
1879         if (!netdev) {
1880                 rdev = __cfg80211_rdev_from_attrs(genl_info_net(info),
1881                                                   info->attrs);
1882                 if (IS_ERR(rdev)) {
1883                         mutex_unlock(&cfg80211_mutex);
1884                         return PTR_ERR(rdev);
1885                 }
1886                 wdev = NULL;
1887                 netdev = NULL;
1888                 result = 0;
1889
1890                 mutex_lock(&rdev->mtx);
1891         } else
1892                 wdev = netdev->ieee80211_ptr;
1893
1894         /*
1895          * end workaround code, by now the rdev is available
1896          * and locked, and wdev may or may not be NULL.
1897          */
1898
1899         if (info->attrs[NL80211_ATTR_WIPHY_NAME])
1900                 result = cfg80211_dev_rename(
1901                         rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
1902
1903         mutex_unlock(&cfg80211_mutex);
1904
1905         if (result)
1906                 goto bad_res;
1907
1908         if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
1909                 struct ieee80211_txq_params txq_params;
1910                 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
1911
1912                 if (!rdev->ops->set_txq_params) {
1913                         result = -EOPNOTSUPP;
1914                         goto bad_res;
1915                 }
1916
1917                 if (!netdev) {
1918                         result = -EINVAL;
1919                         goto bad_res;
1920                 }
1921
1922                 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
1923                     netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
1924                         result = -EINVAL;
1925                         goto bad_res;
1926                 }
1927
1928                 if (!netif_running(netdev)) {
1929                         result = -ENETDOWN;
1930                         goto bad_res;
1931                 }
1932
1933                 nla_for_each_nested(nl_txq_params,
1934                                     info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
1935                                     rem_txq_params) {
1936                         nla_parse(tb, NL80211_TXQ_ATTR_MAX,
1937                                   nla_data(nl_txq_params),
1938                                   nla_len(nl_txq_params),
1939                                   txq_params_policy);
1940                         result = parse_txq_params(tb, &txq_params);
1941                         if (result)
1942                                 goto bad_res;
1943
1944                         result = rdev_set_txq_params(rdev, netdev,
1945                                                      &txq_params);
1946                         if (result)
1947                                 goto bad_res;
1948                 }
1949         }
1950
1951         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
1952                 result = __nl80211_set_channel(rdev,
1953                                 nl80211_can_set_dev_channel(wdev) ? wdev : NULL,
1954                                 info);
1955                 if (result)
1956                         goto bad_res;
1957         }
1958
1959         if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
1960                 struct wireless_dev *txp_wdev = wdev;
1961                 enum nl80211_tx_power_setting type;
1962                 int idx, mbm = 0;
1963
1964                 if (!(rdev->wiphy.features & NL80211_FEATURE_VIF_TXPOWER))
1965                         txp_wdev = NULL;
1966
1967                 if (!rdev->ops->set_tx_power) {
1968                         result = -EOPNOTSUPP;
1969                         goto bad_res;
1970                 }
1971
1972                 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
1973                 type = nla_get_u32(info->attrs[idx]);
1974
1975                 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
1976                     (type != NL80211_TX_POWER_AUTOMATIC)) {
1977                         result = -EINVAL;
1978                         goto bad_res;
1979                 }
1980
1981                 if (type != NL80211_TX_POWER_AUTOMATIC) {
1982                         idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
1983                         mbm = nla_get_u32(info->attrs[idx]);
1984                 }
1985
1986                 result = rdev_set_tx_power(rdev, txp_wdev, type, mbm);
1987                 if (result)
1988                         goto bad_res;
1989         }
1990
1991         if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
1992             info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
1993                 u32 tx_ant, rx_ant;
1994                 if ((!rdev->wiphy.available_antennas_tx &&
1995                      !rdev->wiphy.available_antennas_rx) ||
1996                     !rdev->ops->set_antenna) {
1997                         result = -EOPNOTSUPP;
1998                         goto bad_res;
1999                 }
2000
2001                 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
2002                 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
2003
2004                 /* reject antenna configurations which don't match the
2005                  * available antenna masks, except for the "all" mask */
2006                 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) ||
2007                     (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx))) {
2008                         result = -EINVAL;
2009                         goto bad_res;
2010                 }
2011
2012                 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx;
2013                 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx;
2014
2015                 result = rdev_set_antenna(rdev, tx_ant, rx_ant);
2016                 if (result)
2017                         goto bad_res;
2018         }
2019
2020         changed = 0;
2021
2022         if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
2023                 retry_short = nla_get_u8(
2024                         info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
2025                 if (retry_short == 0) {
2026                         result = -EINVAL;
2027                         goto bad_res;
2028                 }
2029                 changed |= WIPHY_PARAM_RETRY_SHORT;
2030         }
2031
2032         if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
2033                 retry_long = nla_get_u8(
2034                         info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
2035                 if (retry_long == 0) {
2036                         result = -EINVAL;
2037                         goto bad_res;
2038                 }
2039                 changed |= WIPHY_PARAM_RETRY_LONG;
2040         }
2041
2042         if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
2043                 frag_threshold = nla_get_u32(
2044                         info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
2045                 if (frag_threshold < 256) {
2046                         result = -EINVAL;
2047                         goto bad_res;
2048                 }
2049                 if (frag_threshold != (u32) -1) {
2050                         /*
2051                          * Fragments (apart from the last one) are required to
2052                          * have even length. Make the fragmentation code
2053                          * simpler by stripping LSB should someone try to use
2054                          * odd threshold value.
2055                          */
2056                         frag_threshold &= ~0x1;
2057                 }
2058                 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
2059         }
2060
2061         if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
2062                 rts_threshold = nla_get_u32(
2063                         info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
2064                 changed |= WIPHY_PARAM_RTS_THRESHOLD;
2065         }
2066
2067         if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
2068                 coverage_class = nla_get_u8(
2069                         info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
2070                 changed |= WIPHY_PARAM_COVERAGE_CLASS;
2071         }
2072
2073         if (changed) {
2074                 u8 old_retry_short, old_retry_long;
2075                 u32 old_frag_threshold, old_rts_threshold;
2076                 u8 old_coverage_class;
2077
2078                 if (!rdev->ops->set_wiphy_params) {
2079                         result = -EOPNOTSUPP;
2080                         goto bad_res;
2081                 }
2082
2083                 old_retry_short = rdev->wiphy.retry_short;
2084                 old_retry_long = rdev->wiphy.retry_long;
2085                 old_frag_threshold = rdev->wiphy.frag_threshold;
2086                 old_rts_threshold = rdev->wiphy.rts_threshold;
2087                 old_coverage_class = rdev->wiphy.coverage_class;
2088
2089                 if (changed & WIPHY_PARAM_RETRY_SHORT)
2090                         rdev->wiphy.retry_short = retry_short;
2091                 if (changed & WIPHY_PARAM_RETRY_LONG)
2092                         rdev->wiphy.retry_long = retry_long;
2093                 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
2094                         rdev->wiphy.frag_threshold = frag_threshold;
2095                 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
2096                         rdev->wiphy.rts_threshold = rts_threshold;
2097                 if (changed & WIPHY_PARAM_COVERAGE_CLASS)
2098                         rdev->wiphy.coverage_class = coverage_class;
2099
2100                 result = rdev_set_wiphy_params(rdev, changed);
2101                 if (result) {
2102                         rdev->wiphy.retry_short = old_retry_short;
2103                         rdev->wiphy.retry_long = old_retry_long;
2104                         rdev->wiphy.frag_threshold = old_frag_threshold;
2105                         rdev->wiphy.rts_threshold = old_rts_threshold;
2106                         rdev->wiphy.coverage_class = old_coverage_class;
2107                 }
2108         }
2109
2110  bad_res:
2111         mutex_unlock(&rdev->mtx);
2112         if (netdev)
2113                 dev_put(netdev);
2114         return result;
2115 }
2116
2117 static inline u64 wdev_id(struct wireless_dev *wdev)
2118 {
2119         return (u64)wdev->identifier |
2120                ((u64)wiphy_to_dev(wdev->wiphy)->wiphy_idx << 32);
2121 }
2122
2123 static int nl80211_send_chandef(struct sk_buff *msg,
2124                                  struct cfg80211_chan_def *chandef)
2125 {
2126         WARN_ON(!cfg80211_chandef_valid(chandef));
2127
2128         if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
2129                         chandef->chan->center_freq))
2130                 return -ENOBUFS;
2131         switch (chandef->width) {
2132         case NL80211_CHAN_WIDTH_20_NOHT:
2133         case NL80211_CHAN_WIDTH_20:
2134         case NL80211_CHAN_WIDTH_40:
2135                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
2136                                 cfg80211_get_chandef_type(chandef)))
2137                         return -ENOBUFS;
2138                 break;
2139         default:
2140                 break;
2141         }
2142         if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, chandef->width))
2143                 return -ENOBUFS;
2144         if (nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1, chandef->center_freq1))
2145                 return -ENOBUFS;
2146         if (chandef->center_freq2 &&
2147             nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2, chandef->center_freq2))
2148                 return -ENOBUFS;
2149         return 0;
2150 }
2151
2152 static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags,
2153                               struct cfg80211_registered_device *rdev,
2154                               struct wireless_dev *wdev)
2155 {
2156         struct net_device *dev = wdev->netdev;
2157         void *hdr;
2158
2159         hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_INTERFACE);
2160         if (!hdr)
2161                 return -1;
2162
2163         if (dev &&
2164             (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
2165              nla_put_string(msg, NL80211_ATTR_IFNAME, dev->name)))
2166                 goto nla_put_failure;
2167
2168         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
2169             nla_put_u32(msg, NL80211_ATTR_IFTYPE, wdev->iftype) ||
2170             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
2171             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, wdev_address(wdev)) ||
2172             nla_put_u32(msg, NL80211_ATTR_GENERATION,
2173                         rdev->devlist_generation ^
2174                         (cfg80211_rdev_list_generation << 2)))
2175                 goto nla_put_failure;
2176
2177         if (rdev->ops->get_channel) {
2178                 int ret;
2179                 struct cfg80211_chan_def chandef;
2180
2181                 ret = rdev_get_channel(rdev, wdev, &chandef);
2182                 if (ret == 0) {
2183                         if (nl80211_send_chandef(msg, &chandef))
2184                                 goto nla_put_failure;
2185                 }
2186         }
2187
2188         if (wdev->ssid_len) {
2189                 if (nla_put(msg, NL80211_ATTR_SSID, wdev->ssid_len, wdev->ssid))
2190                         goto nla_put_failure;
2191         }
2192
2193         return genlmsg_end(msg, hdr);
2194
2195  nla_put_failure:
2196         genlmsg_cancel(msg, hdr);
2197         return -EMSGSIZE;
2198 }
2199
2200 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
2201 {
2202         int wp_idx = 0;
2203         int if_idx = 0;
2204         int wp_start = cb->args[0];
2205         int if_start = cb->args[1];
2206         struct cfg80211_registered_device *rdev;
2207         struct wireless_dev *wdev;
2208
2209         mutex_lock(&cfg80211_mutex);
2210         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
2211                 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
2212                         continue;
2213                 if (wp_idx < wp_start) {
2214                         wp_idx++;
2215                         continue;
2216                 }
2217                 if_idx = 0;
2218
2219                 mutex_lock(&rdev->devlist_mtx);
2220                 list_for_each_entry(wdev, &rdev->wdev_list, list) {
2221                         if (if_idx < if_start) {
2222                                 if_idx++;
2223                                 continue;
2224                         }
2225                         if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).portid,
2226                                                cb->nlh->nlmsg_seq, NLM_F_MULTI,
2227                                                rdev, wdev) < 0) {
2228                                 mutex_unlock(&rdev->devlist_mtx);
2229                                 goto out;
2230                         }
2231                         if_idx++;
2232                 }
2233                 mutex_unlock(&rdev->devlist_mtx);
2234
2235                 wp_idx++;
2236         }
2237  out:
2238         mutex_unlock(&cfg80211_mutex);
2239
2240         cb->args[0] = wp_idx;
2241         cb->args[1] = if_idx;
2242
2243         return skb->len;
2244 }
2245
2246 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
2247 {
2248         struct sk_buff *msg;
2249         struct cfg80211_registered_device *dev = info->user_ptr[0];
2250         struct wireless_dev *wdev = info->user_ptr[1];
2251
2252         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2253         if (!msg)
2254                 return -ENOMEM;
2255
2256         if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
2257                                dev, wdev) < 0) {
2258                 nlmsg_free(msg);
2259                 return -ENOBUFS;
2260         }
2261
2262         return genlmsg_reply(msg, info);
2263 }
2264
2265 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
2266         [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
2267         [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
2268         [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
2269         [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
2270         [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
2271 };
2272
2273 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
2274 {
2275         struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
2276         int flag;
2277
2278         *mntrflags = 0;
2279
2280         if (!nla)
2281                 return -EINVAL;
2282
2283         if (nla_parse_nested(flags, NL80211_MNTR_FLAG_MAX,
2284                              nla, mntr_flags_policy))
2285                 return -EINVAL;
2286
2287         for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
2288                 if (flags[flag])
2289                         *mntrflags |= (1<<flag);
2290
2291         return 0;
2292 }
2293
2294 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
2295                                struct net_device *netdev, u8 use_4addr,
2296                                enum nl80211_iftype iftype)
2297 {
2298         if (!use_4addr) {
2299                 if (netdev && (netdev->priv_flags & IFF_BRIDGE_PORT))
2300                         return -EBUSY;
2301                 return 0;
2302         }
2303
2304         switch (iftype) {
2305         case NL80211_IFTYPE_AP_VLAN:
2306                 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
2307                         return 0;
2308                 break;
2309         case NL80211_IFTYPE_STATION:
2310                 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
2311                         return 0;
2312                 break;
2313         default:
2314                 break;
2315         }
2316
2317         return -EOPNOTSUPP;
2318 }
2319
2320 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
2321 {
2322         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2323         struct vif_params params;
2324         int err;
2325         enum nl80211_iftype otype, ntype;
2326         struct net_device *dev = info->user_ptr[1];
2327         u32 _flags, *flags = NULL;
2328         bool change = false;
2329
2330         memset(&params, 0, sizeof(params));
2331
2332         otype = ntype = dev->ieee80211_ptr->iftype;
2333
2334         if (info->attrs[NL80211_ATTR_IFTYPE]) {
2335                 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
2336                 if (otype != ntype)
2337                         change = true;
2338                 if (ntype > NL80211_IFTYPE_MAX)
2339                         return -EINVAL;
2340         }
2341
2342         if (info->attrs[NL80211_ATTR_MESH_ID]) {
2343                 struct wireless_dev *wdev = dev->ieee80211_ptr;
2344
2345                 if (ntype != NL80211_IFTYPE_MESH_POINT)
2346                         return -EINVAL;
2347                 if (netif_running(dev))
2348                         return -EBUSY;
2349
2350                 wdev_lock(wdev);
2351                 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
2352                              IEEE80211_MAX_MESH_ID_LEN);
2353                 wdev->mesh_id_up_len =
2354                         nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
2355                 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
2356                        wdev->mesh_id_up_len);
2357                 wdev_unlock(wdev);
2358         }
2359
2360         if (info->attrs[NL80211_ATTR_4ADDR]) {
2361                 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
2362                 change = true;
2363                 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
2364                 if (err)
2365                         return err;
2366         } else {
2367                 params.use_4addr = -1;
2368         }
2369
2370         if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
2371                 if (ntype != NL80211_IFTYPE_MONITOR)
2372                         return -EINVAL;
2373                 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
2374                                           &_flags);
2375                 if (err)
2376                         return err;
2377
2378                 flags = &_flags;
2379                 change = true;
2380         }
2381
2382         if (change)
2383                 err = cfg80211_change_iface(rdev, dev, ntype, flags, &params);
2384         else
2385                 err = 0;
2386
2387         if (!err && params.use_4addr != -1)
2388                 dev->ieee80211_ptr->use_4addr = params.use_4addr;
2389
2390         return err;
2391 }
2392
2393 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
2394 {
2395         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2396         struct vif_params params;
2397         struct wireless_dev *wdev;
2398         struct sk_buff *msg;
2399         int err;
2400         enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
2401         u32 flags;
2402
2403         memset(&params, 0, sizeof(params));
2404
2405         if (!info->attrs[NL80211_ATTR_IFNAME])
2406                 return -EINVAL;
2407
2408         if (info->attrs[NL80211_ATTR_IFTYPE]) {
2409                 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
2410                 if (type > NL80211_IFTYPE_MAX)
2411                         return -EINVAL;
2412         }
2413
2414         if (!rdev->ops->add_virtual_intf ||
2415             !(rdev->wiphy.interface_modes & (1 << type)))
2416                 return -EOPNOTSUPP;
2417
2418         if (type == NL80211_IFTYPE_P2P_DEVICE && info->attrs[NL80211_ATTR_MAC]) {
2419                 nla_memcpy(params.macaddr, info->attrs[NL80211_ATTR_MAC],
2420                            ETH_ALEN);
2421                 if (!is_valid_ether_addr(params.macaddr))
2422                         return -EADDRNOTAVAIL;
2423         }
2424
2425         if (info->attrs[NL80211_ATTR_4ADDR]) {
2426                 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
2427                 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
2428                 if (err)
2429                         return err;
2430         }
2431
2432         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2433         if (!msg)
2434                 return -ENOMEM;
2435
2436         err = parse_monitor_flags(type == NL80211_IFTYPE_MONITOR ?
2437                                   info->attrs[NL80211_ATTR_MNTR_FLAGS] : NULL,
2438                                   &flags);
2439         wdev = rdev_add_virtual_intf(rdev,
2440                                 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
2441                                 type, err ? NULL : &flags, &params);
2442         if (IS_ERR(wdev)) {
2443                 nlmsg_free(msg);
2444                 return PTR_ERR(wdev);
2445         }
2446
2447         switch (type) {
2448         case NL80211_IFTYPE_MESH_POINT:
2449                 if (!info->attrs[NL80211_ATTR_MESH_ID])
2450                         break;
2451                 wdev_lock(wdev);
2452                 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
2453                              IEEE80211_MAX_MESH_ID_LEN);
2454                 wdev->mesh_id_up_len =
2455                         nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
2456                 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
2457                        wdev->mesh_id_up_len);
2458                 wdev_unlock(wdev);
2459                 break;
2460         case NL80211_IFTYPE_P2P_DEVICE:
2461                 /*
2462                  * P2P Device doesn't have a netdev, so doesn't go
2463                  * through the netdev notifier and must be added here
2464                  */
2465                 mutex_init(&wdev->mtx);
2466                 INIT_LIST_HEAD(&wdev->event_list);
2467                 spin_lock_init(&wdev->event_lock);
2468                 INIT_LIST_HEAD(&wdev->mgmt_registrations);
2469                 spin_lock_init(&wdev->mgmt_registrations_lock);
2470
2471                 mutex_lock(&rdev->devlist_mtx);
2472                 wdev->identifier = ++rdev->wdev_id;
2473                 list_add_rcu(&wdev->list, &rdev->wdev_list);
2474                 rdev->devlist_generation++;
2475                 mutex_unlock(&rdev->devlist_mtx);
2476                 break;
2477         default:
2478                 break;
2479         }
2480
2481         if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
2482                                rdev, wdev) < 0) {
2483                 nlmsg_free(msg);
2484                 return -ENOBUFS;
2485         }
2486
2487         return genlmsg_reply(msg, info);
2488 }
2489
2490 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
2491 {
2492         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2493         struct wireless_dev *wdev = info->user_ptr[1];
2494
2495         if (!rdev->ops->del_virtual_intf)
2496                 return -EOPNOTSUPP;
2497
2498         /*
2499          * If we remove a wireless device without a netdev then clear
2500          * user_ptr[1] so that nl80211_post_doit won't dereference it
2501          * to check if it needs to do dev_put(). Otherwise it crashes
2502          * since the wdev has been freed, unlike with a netdev where
2503          * we need the dev_put() for the netdev to really be freed.
2504          */
2505         if (!wdev->netdev)
2506                 info->user_ptr[1] = NULL;
2507
2508         return rdev_del_virtual_intf(rdev, wdev);
2509 }
2510
2511 static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info)
2512 {
2513         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2514         struct net_device *dev = info->user_ptr[1];
2515         u16 noack_map;
2516
2517         if (!info->attrs[NL80211_ATTR_NOACK_MAP])
2518                 return -EINVAL;
2519
2520         if (!rdev->ops->set_noack_map)
2521                 return -EOPNOTSUPP;
2522
2523         noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]);
2524
2525         return rdev_set_noack_map(rdev, dev, noack_map);
2526 }
2527
2528 struct get_key_cookie {
2529         struct sk_buff *msg;
2530         int error;
2531         int idx;
2532 };
2533
2534 static void get_key_callback(void *c, struct key_params *params)
2535 {
2536         struct nlattr *key;
2537         struct get_key_cookie *cookie = c;
2538
2539         if ((params->key &&
2540              nla_put(cookie->msg, NL80211_ATTR_KEY_DATA,
2541                      params->key_len, params->key)) ||
2542             (params->seq &&
2543              nla_put(cookie->msg, NL80211_ATTR_KEY_SEQ,
2544                      params->seq_len, params->seq)) ||
2545             (params->cipher &&
2546              nla_put_u32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
2547                          params->cipher)))
2548                 goto nla_put_failure;
2549
2550         key = nla_nest_start(cookie->msg, NL80211_ATTR_KEY);
2551         if (!key)
2552                 goto nla_put_failure;
2553
2554         if ((params->key &&
2555              nla_put(cookie->msg, NL80211_KEY_DATA,
2556                      params->key_len, params->key)) ||
2557             (params->seq &&
2558              nla_put(cookie->msg, NL80211_KEY_SEQ,
2559                      params->seq_len, params->seq)) ||
2560             (params->cipher &&
2561              nla_put_u32(cookie->msg, NL80211_KEY_CIPHER,
2562                          params->cipher)))
2563                 goto nla_put_failure;
2564
2565         if (nla_put_u8(cookie->msg, NL80211_ATTR_KEY_IDX, cookie->idx))
2566                 goto nla_put_failure;
2567
2568         nla_nest_end(cookie->msg, key);
2569
2570         return;
2571  nla_put_failure:
2572         cookie->error = 1;
2573 }
2574
2575 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
2576 {
2577         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2578         int err;
2579         struct net_device *dev = info->user_ptr[1];
2580         u8 key_idx = 0;
2581         const u8 *mac_addr = NULL;
2582         bool pairwise;
2583         struct get_key_cookie cookie = {
2584                 .error = 0,
2585         };
2586         void *hdr;
2587         struct sk_buff *msg;
2588
2589         if (info->attrs[NL80211_ATTR_KEY_IDX])
2590                 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
2591
2592         if (key_idx > 5)
2593                 return -EINVAL;
2594
2595         if (info->attrs[NL80211_ATTR_MAC])
2596                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2597
2598         pairwise = !!mac_addr;
2599         if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
2600                 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
2601                 if (kt >= NUM_NL80211_KEYTYPES)
2602                         return -EINVAL;
2603                 if (kt != NL80211_KEYTYPE_GROUP &&
2604                     kt != NL80211_KEYTYPE_PAIRWISE)
2605                         return -EINVAL;
2606                 pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
2607         }
2608
2609         if (!rdev->ops->get_key)
2610                 return -EOPNOTSUPP;
2611
2612         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2613         if (!msg)
2614                 return -ENOMEM;
2615
2616         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
2617                              NL80211_CMD_NEW_KEY);
2618         if (IS_ERR(hdr))
2619                 return PTR_ERR(hdr);
2620
2621         cookie.msg = msg;
2622         cookie.idx = key_idx;
2623
2624         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
2625             nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx))
2626                 goto nla_put_failure;
2627         if (mac_addr &&
2628             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
2629                 goto nla_put_failure;
2630
2631         if (pairwise && mac_addr &&
2632             !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
2633                 return -ENOENT;
2634
2635         err = rdev_get_key(rdev, dev, key_idx, pairwise, mac_addr, &cookie,
2636                            get_key_callback);
2637
2638         if (err)
2639                 goto free_msg;
2640
2641         if (cookie.error)
2642                 goto nla_put_failure;
2643
2644         genlmsg_end(msg, hdr);
2645         return genlmsg_reply(msg, info);
2646
2647  nla_put_failure:
2648         err = -ENOBUFS;
2649  free_msg:
2650         nlmsg_free(msg);
2651         return err;
2652 }
2653
2654 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
2655 {
2656         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2657         struct key_parse key;
2658         int err;
2659         struct net_device *dev = info->user_ptr[1];
2660
2661         err = nl80211_parse_key(info, &key);
2662         if (err)
2663                 return err;
2664
2665         if (key.idx < 0)
2666                 return -EINVAL;
2667
2668         /* only support setting default key */
2669         if (!key.def && !key.defmgmt)
2670                 return -EINVAL;
2671
2672         wdev_lock(dev->ieee80211_ptr);
2673
2674         if (key.def) {
2675                 if (!rdev->ops->set_default_key) {
2676                         err = -EOPNOTSUPP;
2677                         goto out;
2678                 }
2679
2680                 err = nl80211_key_allowed(dev->ieee80211_ptr);
2681                 if (err)
2682                         goto out;
2683
2684                 err = rdev_set_default_key(rdev, dev, key.idx,
2685                                                  key.def_uni, key.def_multi);
2686
2687                 if (err)
2688                         goto out;
2689
2690 #ifdef CONFIG_CFG80211_WEXT
2691                 dev->ieee80211_ptr->wext.default_key = key.idx;
2692 #endif
2693         } else {
2694                 if (key.def_uni || !key.def_multi) {
2695                         err = -EINVAL;
2696                         goto out;
2697                 }
2698
2699                 if (!rdev->ops->set_default_mgmt_key) {
2700                         err = -EOPNOTSUPP;
2701                         goto out;
2702                 }
2703
2704                 err = nl80211_key_allowed(dev->ieee80211_ptr);
2705                 if (err)
2706                         goto out;
2707
2708                 err = rdev_set_default_mgmt_key(rdev, dev, key.idx);
2709                 if (err)
2710                         goto out;
2711
2712 #ifdef CONFIG_CFG80211_WEXT
2713                 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx;
2714 #endif
2715         }
2716
2717  out:
2718         wdev_unlock(dev->ieee80211_ptr);
2719
2720         return err;
2721 }
2722
2723 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
2724 {
2725         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2726         int err;
2727         struct net_device *dev = info->user_ptr[1];
2728         struct key_parse key;
2729         const u8 *mac_addr = NULL;
2730
2731         err = nl80211_parse_key(info, &key);
2732         if (err)
2733                 return err;
2734
2735         if (!key.p.key)
2736                 return -EINVAL;
2737
2738         if (info->attrs[NL80211_ATTR_MAC])
2739                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2740
2741         if (key.type == -1) {
2742                 if (mac_addr)
2743                         key.type = NL80211_KEYTYPE_PAIRWISE;
2744                 else
2745                         key.type = NL80211_KEYTYPE_GROUP;
2746         }
2747
2748         /* for now */
2749         if (key.type != NL80211_KEYTYPE_PAIRWISE &&
2750             key.type != NL80211_KEYTYPE_GROUP)
2751                 return -EINVAL;
2752
2753         if (!rdev->ops->add_key)
2754                 return -EOPNOTSUPP;
2755
2756         if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
2757                                            key.type == NL80211_KEYTYPE_PAIRWISE,
2758                                            mac_addr))
2759                 return -EINVAL;
2760
2761         wdev_lock(dev->ieee80211_ptr);
2762         err = nl80211_key_allowed(dev->ieee80211_ptr);
2763         if (!err)
2764                 err = rdev_add_key(rdev, dev, key.idx,
2765                                    key.type == NL80211_KEYTYPE_PAIRWISE,
2766                                     mac_addr, &key.p);
2767         wdev_unlock(dev->ieee80211_ptr);
2768
2769         return err;
2770 }
2771
2772 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
2773 {
2774         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2775         int err;
2776         struct net_device *dev = info->user_ptr[1];
2777         u8 *mac_addr = NULL;
2778         struct key_parse key;
2779
2780         err = nl80211_parse_key(info, &key);
2781         if (err)
2782                 return err;
2783
2784         if (info->attrs[NL80211_ATTR_MAC])
2785                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2786
2787         if (key.type == -1) {
2788                 if (mac_addr)
2789                         key.type = NL80211_KEYTYPE_PAIRWISE;
2790                 else
2791                         key.type = NL80211_KEYTYPE_GROUP;
2792         }
2793
2794         /* for now */
2795         if (key.type != NL80211_KEYTYPE_PAIRWISE &&
2796             key.type != NL80211_KEYTYPE_GROUP)
2797                 return -EINVAL;
2798
2799         if (!rdev->ops->del_key)
2800                 return -EOPNOTSUPP;
2801
2802         wdev_lock(dev->ieee80211_ptr);
2803         err = nl80211_key_allowed(dev->ieee80211_ptr);
2804
2805         if (key.type == NL80211_KEYTYPE_PAIRWISE && mac_addr &&
2806             !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
2807                 err = -ENOENT;
2808
2809         if (!err)
2810                 err = rdev_del_key(rdev, dev, key.idx,
2811                                    key.type == NL80211_KEYTYPE_PAIRWISE,
2812                                    mac_addr);
2813
2814 #ifdef CONFIG_CFG80211_WEXT
2815         if (!err) {
2816                 if (key.idx == dev->ieee80211_ptr->wext.default_key)
2817                         dev->ieee80211_ptr->wext.default_key = -1;
2818                 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key)
2819                         dev->ieee80211_ptr->wext.default_mgmt_key = -1;
2820         }
2821 #endif
2822         wdev_unlock(dev->ieee80211_ptr);
2823
2824         return err;
2825 }
2826
2827 /* This function returns an error or the number of nested attributes */
2828 static int validate_acl_mac_addrs(struct nlattr *nl_attr)
2829 {
2830         struct nlattr *attr;
2831         int n_entries = 0, tmp;
2832
2833         nla_for_each_nested(attr, nl_attr, tmp) {
2834                 if (nla_len(attr) != ETH_ALEN)
2835                         return -EINVAL;
2836
2837                 n_entries++;
2838         }
2839
2840         return n_entries;
2841 }
2842
2843 /*
2844  * This function parses ACL information and allocates memory for ACL data.
2845  * On successful return, the calling function is responsible to free the
2846  * ACL buffer returned by this function.
2847  */
2848 static struct cfg80211_acl_data *parse_acl_data(struct wiphy *wiphy,
2849                                                 struct genl_info *info)
2850 {
2851         enum nl80211_acl_policy acl_policy;
2852         struct nlattr *attr;
2853         struct cfg80211_acl_data *acl;
2854         int i = 0, n_entries, tmp;
2855
2856         if (!wiphy->max_acl_mac_addrs)
2857                 return ERR_PTR(-EOPNOTSUPP);
2858
2859         if (!info->attrs[NL80211_ATTR_ACL_POLICY])
2860                 return ERR_PTR(-EINVAL);
2861
2862         acl_policy = nla_get_u32(info->attrs[NL80211_ATTR_ACL_POLICY]);
2863         if (acl_policy != NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED &&
2864             acl_policy != NL80211_ACL_POLICY_DENY_UNLESS_LISTED)
2865                 return ERR_PTR(-EINVAL);
2866
2867         if (!info->attrs[NL80211_ATTR_MAC_ADDRS])
2868                 return ERR_PTR(-EINVAL);
2869
2870         n_entries = validate_acl_mac_addrs(info->attrs[NL80211_ATTR_MAC_ADDRS]);
2871         if (n_entries < 0)
2872                 return ERR_PTR(n_entries);
2873
2874         if (n_entries > wiphy->max_acl_mac_addrs)
2875                 return ERR_PTR(-ENOTSUPP);
2876
2877         acl = kzalloc(sizeof(*acl) + (sizeof(struct mac_address) * n_entries),
2878                       GFP_KERNEL);
2879         if (!acl)
2880                 return ERR_PTR(-ENOMEM);
2881
2882         nla_for_each_nested(attr, info->attrs[NL80211_ATTR_MAC_ADDRS], tmp) {
2883                 memcpy(acl->mac_addrs[i].addr, nla_data(attr), ETH_ALEN);
2884                 i++;
2885         }
2886
2887         acl->n_acl_entries = n_entries;
2888         acl->acl_policy = acl_policy;
2889
2890         return acl;
2891 }
2892
2893 static int nl80211_set_mac_acl(struct sk_buff *skb, struct genl_info *info)
2894 {
2895         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2896         struct net_device *dev = info->user_ptr[1];
2897         struct cfg80211_acl_data *acl;
2898         int err;
2899
2900         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2901             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2902                 return -EOPNOTSUPP;
2903
2904         if (!dev->ieee80211_ptr->beacon_interval)
2905                 return -EINVAL;
2906
2907         acl = parse_acl_data(&rdev->wiphy, info);
2908         if (IS_ERR(acl))
2909                 return PTR_ERR(acl);
2910
2911         err = rdev_set_mac_acl(rdev, dev, acl);
2912
2913         kfree(acl);
2914
2915         return err;
2916 }
2917
2918 static int nl80211_parse_beacon(struct genl_info *info,
2919                                 struct cfg80211_beacon_data *bcn)
2920 {
2921         bool haveinfo = false;
2922
2923         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_BEACON_TAIL]) ||
2924             !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]) ||
2925             !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE_PROBE_RESP]) ||
2926             !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE_ASSOC_RESP]))
2927                 return -EINVAL;
2928
2929         memset(bcn, 0, sizeof(*bcn));
2930
2931         if (info->attrs[NL80211_ATTR_BEACON_HEAD]) {
2932                 bcn->head = nla_data(info->attrs[NL80211_ATTR_BEACON_HEAD]);
2933                 bcn->head_len = nla_len(info->attrs[NL80211_ATTR_BEACON_HEAD]);
2934                 if (!bcn->head_len)
2935                         return -EINVAL;
2936                 haveinfo = true;
2937         }
2938
2939         if (info->attrs[NL80211_ATTR_BEACON_TAIL]) {
2940                 bcn->tail = nla_data(info->attrs[NL80211_ATTR_BEACON_TAIL]);
2941                 bcn->tail_len =
2942                     nla_len(info->attrs[NL80211_ATTR_BEACON_TAIL]);
2943                 haveinfo = true;
2944         }
2945
2946         if (!haveinfo)
2947                 return -EINVAL;
2948
2949         if (info->attrs[NL80211_ATTR_IE]) {
2950                 bcn->beacon_ies = nla_data(info->attrs[NL80211_ATTR_IE]);
2951                 bcn->beacon_ies_len = nla_len(info->attrs[NL80211_ATTR_IE]);
2952         }
2953
2954         if (info->attrs[NL80211_ATTR_IE_PROBE_RESP]) {
2955                 bcn->proberesp_ies =
2956                         nla_data(info->attrs[NL80211_ATTR_IE_PROBE_RESP]);
2957                 bcn->proberesp_ies_len =
2958                         nla_len(info->attrs[NL80211_ATTR_IE_PROBE_RESP]);
2959         }
2960
2961         if (info->attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
2962                 bcn->assocresp_ies =
2963                         nla_data(info->attrs[NL80211_ATTR_IE_ASSOC_RESP]);
2964                 bcn->assocresp_ies_len =
2965                         nla_len(info->attrs[NL80211_ATTR_IE_ASSOC_RESP]);
2966         }
2967
2968         if (info->attrs[NL80211_ATTR_PROBE_RESP]) {
2969                 bcn->probe_resp =
2970                         nla_data(info->attrs[NL80211_ATTR_PROBE_RESP]);
2971                 bcn->probe_resp_len =
2972                         nla_len(info->attrs[NL80211_ATTR_PROBE_RESP]);
2973         }
2974
2975         return 0;
2976 }
2977
2978 static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev,
2979                                    struct cfg80211_ap_settings *params)
2980 {
2981         struct wireless_dev *wdev;
2982         bool ret = false;
2983
2984         mutex_lock(&rdev->devlist_mtx);
2985
2986         list_for_each_entry(wdev, &rdev->wdev_list, list) {
2987                 if (wdev->iftype != NL80211_IFTYPE_AP &&
2988                     wdev->iftype != NL80211_IFTYPE_P2P_GO)
2989                         continue;
2990
2991                 if (!wdev->preset_chandef.chan)
2992                         continue;
2993
2994                 params->chandef = wdev->preset_chandef;
2995                 ret = true;
2996                 break;
2997         }
2998
2999         mutex_unlock(&rdev->devlist_mtx);
3000
3001         return ret;
3002 }
3003
3004 static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev,
3005                                     enum nl80211_auth_type auth_type,
3006                                     enum nl80211_commands cmd)
3007 {
3008         if (auth_type > NL80211_AUTHTYPE_MAX)
3009                 return false;
3010
3011         switch (cmd) {
3012         case NL80211_CMD_AUTHENTICATE:
3013                 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
3014                     auth_type == NL80211_AUTHTYPE_SAE)
3015                         return false;
3016                 return true;
3017         case NL80211_CMD_CONNECT:
3018         case NL80211_CMD_START_AP:
3019                 /* SAE not supported yet */
3020                 if (auth_type == NL80211_AUTHTYPE_SAE)
3021                         return false;
3022                 return true;
3023         default:
3024                 return false;
3025         }
3026 }
3027
3028 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
3029 {
3030         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3031         struct net_device *dev = info->user_ptr[1];
3032         struct wireless_dev *wdev = dev->ieee80211_ptr;
3033         struct cfg80211_ap_settings params;
3034         int err;
3035         u8 radar_detect_width = 0;
3036
3037         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3038             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3039                 return -EOPNOTSUPP;
3040
3041         if (!rdev->ops->start_ap)
3042                 return -EOPNOTSUPP;
3043
3044         if (wdev->beacon_interval)
3045                 return -EALREADY;
3046
3047         memset(&params, 0, sizeof(params));
3048
3049         /* these are required for START_AP */
3050         if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
3051             !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
3052             !info->attrs[NL80211_ATTR_BEACON_HEAD])
3053                 return -EINVAL;
3054
3055         err = nl80211_parse_beacon(info, &params.beacon);
3056         if (err)
3057                 return err;
3058
3059         params.beacon_interval =
3060                 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
3061         params.dtim_period =
3062                 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
3063
3064         err = cfg80211_validate_beacon_int(rdev, params.beacon_interval);
3065         if (err)
3066                 return err;
3067
3068         /*
3069          * In theory, some of these attributes should be required here
3070          * but since they were not used when the command was originally
3071          * added, keep them optional for old user space programs to let
3072          * them continue to work with drivers that do not need the
3073          * additional information -- drivers must check!
3074          */
3075         if (info->attrs[NL80211_ATTR_SSID]) {
3076                 params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
3077                 params.ssid_len =
3078                         nla_len(info->attrs[NL80211_ATTR_SSID]);
3079                 if (params.ssid_len == 0 ||
3080                     params.ssid_len > IEEE80211_MAX_SSID_LEN)
3081                         return -EINVAL;
3082         }
3083
3084         if (info->attrs[NL80211_ATTR_HIDDEN_SSID]) {
3085                 params.hidden_ssid = nla_get_u32(
3086                         info->attrs[NL80211_ATTR_HIDDEN_SSID]);
3087                 if (params.hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE &&
3088                     params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_LEN &&
3089                     params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_CONTENTS)
3090                         return -EINVAL;
3091         }
3092
3093         params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
3094
3095         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
3096                 params.auth_type = nla_get_u32(
3097                         info->attrs[NL80211_ATTR_AUTH_TYPE]);
3098                 if (!nl80211_valid_auth_type(rdev, params.auth_type,
3099                                              NL80211_CMD_START_AP))
3100                         return -EINVAL;
3101         } else
3102                 params.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
3103
3104         err = nl80211_crypto_settings(rdev, info, &params.crypto,
3105                                       NL80211_MAX_NR_CIPHER_SUITES);
3106         if (err)
3107                 return err;
3108
3109         if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) {
3110                 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER))
3111                         return -EOPNOTSUPP;
3112                 params.inactivity_timeout = nla_get_u16(
3113                         info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]);
3114         }
3115
3116         if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
3117                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3118                         return -EINVAL;
3119                 params.p2p_ctwindow =
3120                         nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
3121                 if (params.p2p_ctwindow > 127)
3122                         return -EINVAL;
3123                 if (params.p2p_ctwindow != 0 &&
3124                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
3125                         return -EINVAL;
3126         }
3127
3128         if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
3129                 u8 tmp;
3130
3131                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3132                         return -EINVAL;
3133                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
3134                 if (tmp > 1)
3135                         return -EINVAL;
3136                 params.p2p_opp_ps = tmp;
3137                 if (params.p2p_opp_ps != 0 &&
3138                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
3139                         return -EINVAL;
3140         }
3141
3142         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
3143                 err = nl80211_parse_chandef(rdev, info, &params.chandef);
3144                 if (err)
3145                         return err;
3146         } else if (wdev->preset_chandef.chan) {
3147                 params.chandef = wdev->preset_chandef;
3148         } else if (!nl80211_get_ap_channel(rdev, &params))
3149                 return -EINVAL;
3150
3151         if (!cfg80211_reg_can_beacon(&rdev->wiphy, &params.chandef))
3152                 return -EINVAL;
3153
3154         err = cfg80211_chandef_dfs_required(wdev->wiphy, &params.chandef);
3155         if (err < 0)
3156                 return err;
3157         if (err) {
3158                 radar_detect_width = BIT(params.chandef.width);
3159                 params.radar_required = true;
3160         }
3161
3162         mutex_lock(&rdev->devlist_mtx);
3163         err = cfg80211_can_use_iftype_chan(rdev, wdev, wdev->iftype,
3164                                            params.chandef.chan,
3165                                            CHAN_MODE_SHARED,
3166                                            radar_detect_width);
3167         mutex_unlock(&rdev->devlist_mtx);
3168
3169         if (err)
3170                 return err;
3171
3172         if (info->attrs[NL80211_ATTR_ACL_POLICY]) {
3173                 params.acl = parse_acl_data(&rdev->wiphy, info);
3174                 if (IS_ERR(params.acl))
3175                         return PTR_ERR(params.acl);
3176         }
3177
3178         err = rdev_start_ap(rdev, dev, &params);
3179         if (!err) {
3180                 wdev->preset_chandef = params.chandef;
3181                 wdev->beacon_interval = params.beacon_interval;
3182                 wdev->channel = params.chandef.chan;
3183                 wdev->ssid_len = params.ssid_len;
3184                 memcpy(wdev->ssid, params.ssid, wdev->ssid_len);
3185         }
3186
3187         kfree(params.acl);
3188
3189         return err;
3190 }
3191
3192 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info)
3193 {
3194         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3195         struct net_device *dev = info->user_ptr[1];
3196         struct wireless_dev *wdev = dev->ieee80211_ptr;
3197         struct cfg80211_beacon_data params;
3198         int err;
3199
3200         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3201             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3202                 return -EOPNOTSUPP;
3203
3204         if (!rdev->ops->change_beacon)
3205                 return -EOPNOTSUPP;
3206
3207         if (!wdev->beacon_interval)
3208                 return -EINVAL;
3209
3210         err = nl80211_parse_beacon(info, &params);
3211         if (err)
3212                 return err;
3213
3214         return rdev_change_beacon(rdev, dev, &params);
3215 }
3216
3217 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info)
3218 {
3219         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3220         struct net_device *dev = info->user_ptr[1];
3221
3222         return cfg80211_stop_ap(rdev, dev);
3223 }
3224
3225 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
3226         [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
3227         [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
3228         [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
3229         [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
3230         [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
3231         [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG },
3232 };
3233
3234 static int parse_station_flags(struct genl_info *info,
3235                                enum nl80211_iftype iftype,
3236                                struct station_parameters *params)
3237 {
3238         struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
3239         struct nlattr *nla;
3240         int flag;
3241
3242         /*
3243          * Try parsing the new attribute first so userspace
3244          * can specify both for older kernels.
3245          */
3246         nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
3247         if (nla) {
3248                 struct nl80211_sta_flag_update *sta_flags;
3249
3250                 sta_flags = nla_data(nla);
3251                 params->sta_flags_mask = sta_flags->mask;
3252                 params->sta_flags_set = sta_flags->set;
3253                 params->sta_flags_set &= params->sta_flags_mask;
3254                 if ((params->sta_flags_mask |
3255                      params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
3256                         return -EINVAL;
3257                 return 0;
3258         }
3259
3260         /* if present, parse the old attribute */
3261
3262         nla = info->attrs[NL80211_ATTR_STA_FLAGS];
3263         if (!nla)
3264                 return 0;
3265
3266         if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX,
3267                              nla, sta_flags_policy))
3268                 return -EINVAL;
3269
3270         /*
3271          * Only allow certain flags for interface types so that
3272          * other attributes are silently ignored. Remember that
3273          * this is backward compatibility code with old userspace
3274          * and shouldn't be hit in other cases anyway.
3275          */
3276         switch (iftype) {
3277         case NL80211_IFTYPE_AP:
3278         case NL80211_IFTYPE_AP_VLAN:
3279         case NL80211_IFTYPE_P2P_GO:
3280                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
3281                                          BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
3282                                          BIT(NL80211_STA_FLAG_WME) |
3283                                          BIT(NL80211_STA_FLAG_MFP);
3284                 break;
3285         case NL80211_IFTYPE_P2P_CLIENT:
3286         case NL80211_IFTYPE_STATION:
3287                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
3288                                          BIT(NL80211_STA_FLAG_TDLS_PEER);
3289                 break;
3290         case NL80211_IFTYPE_MESH_POINT:
3291                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3292                                          BIT(NL80211_STA_FLAG_MFP) |
3293                                          BIT(NL80211_STA_FLAG_AUTHORIZED);
3294         default:
3295                 return -EINVAL;
3296         }
3297
3298         for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) {
3299                 if (flags[flag]) {
3300                         params->sta_flags_set |= (1<<flag);
3301
3302                         /* no longer support new API additions in old API */
3303                         if (flag > NL80211_STA_FLAG_MAX_OLD_API)
3304                                 return -EINVAL;
3305                 }
3306         }
3307
3308         return 0;
3309 }
3310
3311 static bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info,
3312                                  int attr)
3313 {
3314         struct nlattr *rate;
3315         u32 bitrate;
3316         u16 bitrate_compat;
3317
3318         rate = nla_nest_start(msg, attr);
3319         if (!rate)
3320                 return false;
3321
3322         /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
3323         bitrate = cfg80211_calculate_bitrate(info);
3324         /* report 16-bit bitrate only if we can */
3325         bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0;
3326         if (bitrate > 0 &&
3327             nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate))
3328                 return false;
3329         if (bitrate_compat > 0 &&
3330             nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat))
3331                 return false;
3332
3333         if (info->flags & RATE_INFO_FLAGS_MCS) {
3334                 if (nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs))
3335                         return false;
3336                 if (info->flags & RATE_INFO_FLAGS_40_MHZ_WIDTH &&
3337                     nla_put_flag(msg, NL80211_RATE_INFO_40_MHZ_WIDTH))
3338                         return false;
3339                 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
3340                     nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
3341                         return false;
3342         } else if (info->flags & RATE_INFO_FLAGS_VHT_MCS) {
3343                 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_MCS, info->mcs))
3344                         return false;
3345                 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_NSS, info->nss))
3346                         return false;
3347                 if (info->flags & RATE_INFO_FLAGS_40_MHZ_WIDTH &&
3348                     nla_put_flag(msg, NL80211_RATE_INFO_40_MHZ_WIDTH))
3349                         return false;
3350                 if (info->flags & RATE_INFO_FLAGS_80_MHZ_WIDTH &&
3351                     nla_put_flag(msg, NL80211_RATE_INFO_80_MHZ_WIDTH))
3352                         return false;
3353                 if (info->flags & RATE_INFO_FLAGS_80P80_MHZ_WIDTH &&
3354                     nla_put_flag(msg, NL80211_RATE_INFO_80P80_MHZ_WIDTH))
3355                         return false;
3356                 if (info->flags & RATE_INFO_FLAGS_160_MHZ_WIDTH &&
3357                     nla_put_flag(msg, NL80211_RATE_INFO_160_MHZ_WIDTH))
3358                         return false;
3359                 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
3360                     nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
3361                         return false;
3362         }
3363
3364         nla_nest_end(msg, rate);
3365         return true;
3366 }
3367
3368 static int nl80211_send_station(struct sk_buff *msg, u32 portid, u32 seq,
3369                                 int flags,
3370                                 struct cfg80211_registered_device *rdev,
3371                                 struct net_device *dev,
3372                                 const u8 *mac_addr, struct station_info *sinfo)
3373 {
3374         void *hdr;
3375         struct nlattr *sinfoattr, *bss_param;
3376
3377         hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_STATION);
3378         if (!hdr)
3379                 return -1;
3380
3381         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3382             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
3383             nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation))
3384                 goto nla_put_failure;
3385
3386         sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO);
3387         if (!sinfoattr)
3388                 goto nla_put_failure;
3389         if ((sinfo->filled & STATION_INFO_CONNECTED_TIME) &&
3390             nla_put_u32(msg, NL80211_STA_INFO_CONNECTED_TIME,
3391                         sinfo->connected_time))
3392                 goto nla_put_failure;
3393         if ((sinfo->filled & STATION_INFO_INACTIVE_TIME) &&
3394             nla_put_u32(msg, NL80211_STA_INFO_INACTIVE_TIME,
3395                         sinfo->inactive_time))
3396                 goto nla_put_failure;
3397         if ((sinfo->filled & (STATION_INFO_RX_BYTES |
3398                               STATION_INFO_RX_BYTES64)) &&
3399             nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES,
3400                         (u32)sinfo->rx_bytes))
3401                 goto nla_put_failure;
3402         if ((sinfo->filled & (STATION_INFO_TX_BYTES |
3403                               NL80211_STA_INFO_TX_BYTES64)) &&
3404             nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES,
3405                         (u32)sinfo->tx_bytes))
3406                 goto nla_put_failure;
3407         if ((sinfo->filled & STATION_INFO_RX_BYTES64) &&
3408             nla_put_u64(msg, NL80211_STA_INFO_RX_BYTES64,
3409                         sinfo->rx_bytes))
3410                 goto nla_put_failure;
3411         if ((sinfo->filled & STATION_INFO_TX_BYTES64) &&
3412             nla_put_u64(msg, NL80211_STA_INFO_TX_BYTES64,
3413                         sinfo->tx_bytes))
3414                 goto nla_put_failure;
3415         if ((sinfo->filled & STATION_INFO_LLID) &&
3416             nla_put_u16(msg, NL80211_STA_INFO_LLID, sinfo->llid))
3417                 goto nla_put_failure;
3418         if ((sinfo->filled & STATION_INFO_PLID) &&
3419             nla_put_u16(msg, NL80211_STA_INFO_PLID, sinfo->plid))
3420                 goto nla_put_failure;
3421         if ((sinfo->filled & STATION_INFO_PLINK_STATE) &&
3422             nla_put_u8(msg, NL80211_STA_INFO_PLINK_STATE,
3423                        sinfo->plink_state))
3424                 goto nla_put_failure;
3425         switch (rdev->wiphy.signal_type) {
3426         case CFG80211_SIGNAL_TYPE_MBM:
3427                 if ((sinfo->filled & STATION_INFO_SIGNAL) &&
3428                     nla_put_u8(msg, NL80211_STA_INFO_SIGNAL,
3429                                sinfo->signal))
3430                         goto nla_put_failure;
3431                 if ((sinfo->filled & STATION_INFO_SIGNAL_AVG) &&
3432                     nla_put_u8(msg, NL80211_STA_INFO_SIGNAL_AVG,
3433                                sinfo->signal_avg))
3434                         goto nla_put_failure;
3435                 break;
3436         default:
3437                 break;
3438         }
3439         if (sinfo->filled & STATION_INFO_TX_BITRATE) {
3440                 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
3441                                           NL80211_STA_INFO_TX_BITRATE))
3442                         goto nla_put_failure;
3443         }
3444         if (sinfo->filled & STATION_INFO_RX_BITRATE) {
3445                 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
3446                                           NL80211_STA_INFO_RX_BITRATE))
3447                         goto nla_put_failure;
3448         }
3449         if ((sinfo->filled & STATION_INFO_RX_PACKETS) &&
3450             nla_put_u32(msg, NL80211_STA_INFO_RX_PACKETS,
3451                         sinfo->rx_packets))
3452                 goto nla_put_failure;
3453         if ((sinfo->filled & STATION_INFO_TX_PACKETS) &&
3454             nla_put_u32(msg, NL80211_STA_INFO_TX_PACKETS,
3455                         sinfo->tx_packets))
3456                 goto nla_put_failure;
3457         if ((sinfo->filled & STATION_INFO_TX_RETRIES) &&
3458             nla_put_u32(msg, NL80211_STA_INFO_TX_RETRIES,
3459                         sinfo->tx_retries))
3460                 goto nla_put_failure;
3461         if ((sinfo->filled & STATION_INFO_TX_FAILED) &&
3462             nla_put_u32(msg, NL80211_STA_INFO_TX_FAILED,
3463                         sinfo->tx_failed))
3464                 goto nla_put_failure;
3465         if ((sinfo->filled & STATION_INFO_BEACON_LOSS_COUNT) &&
3466             nla_put_u32(msg, NL80211_STA_INFO_BEACON_LOSS,
3467                         sinfo->beacon_loss_count))
3468                 goto nla_put_failure;
3469         if ((sinfo->filled & STATION_INFO_LOCAL_PM) &&
3470             nla_put_u32(msg, NL80211_STA_INFO_LOCAL_PM,
3471                         sinfo->local_pm))
3472                 goto nla_put_failure;
3473         if ((sinfo->filled & STATION_INFO_PEER_PM) &&
3474             nla_put_u32(msg, NL80211_STA_INFO_PEER_PM,
3475                         sinfo->peer_pm))
3476                 goto nla_put_failure;
3477         if ((sinfo->filled & STATION_INFO_NONPEER_PM) &&
3478             nla_put_u32(msg, NL80211_STA_INFO_NONPEER_PM,
3479                         sinfo->nonpeer_pm))
3480                 goto nla_put_failure;
3481         if (sinfo->filled & STATION_INFO_BSS_PARAM) {
3482                 bss_param = nla_nest_start(msg, NL80211_STA_INFO_BSS_PARAM);
3483                 if (!bss_param)
3484                         goto nla_put_failure;
3485
3486                 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) &&
3487                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) ||
3488                     ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) &&
3489                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) ||
3490                     ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) &&
3491                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) ||
3492                     nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
3493                                sinfo->bss_param.dtim_period) ||
3494                     nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
3495                                 sinfo->bss_param.beacon_interval))
3496                         goto nla_put_failure;
3497
3498                 nla_nest_end(msg, bss_param);
3499         }
3500         if ((sinfo->filled & STATION_INFO_STA_FLAGS) &&
3501             nla_put(msg, NL80211_STA_INFO_STA_FLAGS,
3502                     sizeof(struct nl80211_sta_flag_update),
3503                     &sinfo->sta_flags))
3504                 goto nla_put_failure;
3505         if ((sinfo->filled & STATION_INFO_T_OFFSET) &&
3506                 nla_put_u64(msg, NL80211_STA_INFO_T_OFFSET,
3507                             sinfo->t_offset))
3508                 goto nla_put_failure;
3509         nla_nest_end(msg, sinfoattr);
3510
3511         if ((sinfo->filled & STATION_INFO_ASSOC_REQ_IES) &&
3512             nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
3513                     sinfo->assoc_req_ies))
3514                 goto nla_put_failure;
3515
3516         return genlmsg_end(msg, hdr);
3517
3518  nla_put_failure:
3519         genlmsg_cancel(msg, hdr);
3520         return -EMSGSIZE;
3521 }
3522
3523 static int nl80211_dump_station(struct sk_buff *skb,
3524                                 struct netlink_callback *cb)
3525 {
3526         struct station_info sinfo;
3527         struct cfg80211_registered_device *dev;
3528         struct net_device *netdev;
3529         u8 mac_addr[ETH_ALEN];
3530         int sta_idx = cb->args[1];
3531         int err;
3532
3533         err = nl80211_prepare_netdev_dump(skb, cb, &dev, &netdev);
3534         if (err)
3535                 return err;
3536
3537         if (!dev->ops->dump_station) {
3538                 err = -EOPNOTSUPP;
3539                 goto out_err;
3540         }
3541
3542         while (1) {
3543                 memset(&sinfo, 0, sizeof(sinfo));
3544                 err = rdev_dump_station(dev, netdev, sta_idx,
3545                                         mac_addr, &sinfo);
3546                 if (err == -ENOENT)
3547                         break;
3548                 if (err)
3549                         goto out_err;
3550
3551                 if (nl80211_send_station(skb,
3552                                 NETLINK_CB(cb->skb).portid,
3553                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
3554                                 dev, netdev, mac_addr,
3555                                 &sinfo) < 0)
3556                         goto out;
3557
3558                 sta_idx++;
3559         }
3560
3561
3562  out:
3563         cb->args[1] = sta_idx;
3564         err = skb->len;
3565  out_err:
3566         nl80211_finish_netdev_dump(dev);
3567
3568         return err;
3569 }
3570
3571 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
3572 {
3573         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3574         struct net_device *dev = info->user_ptr[1];
3575         struct station_info sinfo;
3576         struct sk_buff *msg;
3577         u8 *mac_addr = NULL;
3578         int err;
3579
3580         memset(&sinfo, 0, sizeof(sinfo));
3581
3582         if (!info->attrs[NL80211_ATTR_MAC])
3583                 return -EINVAL;
3584
3585         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3586
3587         if (!rdev->ops->get_station)
3588                 return -EOPNOTSUPP;
3589
3590         err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
3591         if (err)
3592                 return err;
3593
3594         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3595         if (!msg)
3596                 return -ENOMEM;
3597
3598         if (nl80211_send_station(msg, info->snd_portid, info->snd_seq, 0,
3599                                  rdev, dev, mac_addr, &sinfo) < 0) {
3600                 nlmsg_free(msg);
3601                 return -ENOBUFS;
3602         }
3603
3604         return genlmsg_reply(msg, info);
3605 }
3606
3607 int cfg80211_check_station_change(struct wiphy *wiphy,
3608                                   struct station_parameters *params,
3609                                   enum cfg80211_station_type statype)
3610 {
3611         if (params->listen_interval != -1)
3612                 return -EINVAL;
3613         if (params->aid)
3614                 return -EINVAL;
3615
3616         /* When you run into this, adjust the code below for the new flag */
3617         BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
3618
3619         switch (statype) {
3620         case CFG80211_STA_MESH_PEER_KERNEL:
3621         case CFG80211_STA_MESH_PEER_USER:
3622                 /*
3623                  * No ignoring the TDLS flag here -- the userspace mesh
3624                  * code doesn't have the bug of including TDLS in the
3625                  * mask everywhere.
3626                  */
3627                 if (params->sta_flags_mask &
3628                                 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3629                                   BIT(NL80211_STA_FLAG_MFP) |
3630                                   BIT(NL80211_STA_FLAG_AUTHORIZED)))
3631                         return -EINVAL;
3632                 break;
3633         case CFG80211_STA_TDLS_PEER_SETUP:
3634         case CFG80211_STA_TDLS_PEER_ACTIVE:
3635                 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
3636                         return -EINVAL;
3637                 /* ignore since it can't change */
3638                 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
3639                 break;
3640         default:
3641                 /* disallow mesh-specific things */
3642                 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
3643                         return -EINVAL;
3644                 if (params->local_pm)
3645                         return -EINVAL;
3646                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
3647                         return -EINVAL;
3648         }
3649
3650         if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
3651             statype != CFG80211_STA_TDLS_PEER_ACTIVE) {
3652                 /* TDLS can't be set, ... */
3653                 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
3654                         return -EINVAL;
3655                 /*
3656                  * ... but don't bother the driver with it. This works around
3657                  * a hostapd/wpa_supplicant issue -- it always includes the
3658                  * TLDS_PEER flag in the mask even for AP mode.
3659                  */
3660                 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
3661         }
3662
3663         if (statype != CFG80211_STA_TDLS_PEER_SETUP) {
3664                 /* reject other things that can't change */
3665                 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD)
3666                         return -EINVAL;
3667                 if (params->sta_modify_mask & STATION_PARAM_APPLY_CAPABILITY)
3668                         return -EINVAL;
3669                 if (params->supported_rates)
3670                         return -EINVAL;
3671                 if (params->ext_capab || params->ht_capa || params->vht_capa)
3672                         return -EINVAL;
3673         }
3674
3675         if (statype != CFG80211_STA_AP_CLIENT) {
3676                 if (params->vlan)
3677                         return -EINVAL;
3678         }
3679
3680         switch (statype) {
3681         case CFG80211_STA_AP_MLME_CLIENT:
3682                 /* Use this only for authorizing/unauthorizing a station */
3683                 if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)))
3684                         return -EOPNOTSUPP;
3685                 break;
3686         case CFG80211_STA_AP_CLIENT:
3687                 /* accept only the listed bits */
3688                 if (params->sta_flags_mask &
3689                                 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
3690                                   BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3691                                   BIT(NL80211_STA_FLAG_ASSOCIATED) |
3692                                   BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
3693                                   BIT(NL80211_STA_FLAG_WME) |
3694                                   BIT(NL80211_STA_FLAG_MFP)))
3695                         return -EINVAL;
3696
3697                 /* but authenticated/associated only if driver handles it */
3698                 if (!(wiphy->features & NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
3699                     params->sta_flags_mask &
3700                                 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3701                                  BIT(NL80211_STA_FLAG_ASSOCIATED)))
3702                         return -EINVAL;
3703                 break;
3704         case CFG80211_STA_IBSS:
3705         case CFG80211_STA_AP_STA:
3706                 /* reject any changes other than AUTHORIZED */
3707                 if (params->sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
3708                         return -EINVAL;
3709                 break;
3710         case CFG80211_STA_TDLS_PEER_SETUP:
3711                 /* reject any changes other than AUTHORIZED or WME */
3712                 if (params->sta_flags_mask & ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
3713                                                BIT(NL80211_STA_FLAG_WME)))
3714                         return -EINVAL;
3715                 /* force (at least) rates when authorizing */
3716                 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED) &&
3717                     !params->supported_rates)
3718                         return -EINVAL;
3719                 break;
3720         case CFG80211_STA_TDLS_PEER_ACTIVE:
3721                 /* reject any changes */
3722                 return -EINVAL;
3723         case CFG80211_STA_MESH_PEER_KERNEL:
3724                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
3725                         return -EINVAL;
3726                 break;
3727         case CFG80211_STA_MESH_PEER_USER:
3728                 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
3729                         return -EINVAL;
3730                 break;
3731         }
3732
3733         return 0;
3734 }
3735 EXPORT_SYMBOL(cfg80211_check_station_change);
3736
3737 /*
3738  * Get vlan interface making sure it is running and on the right wiphy.
3739  */
3740 static struct net_device *get_vlan(struct genl_info *info,
3741                                    struct cfg80211_registered_device *rdev)
3742 {
3743         struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
3744         struct net_device *v;
3745         int ret;
3746
3747         if (!vlanattr)
3748                 return NULL;
3749
3750         v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr));
3751         if (!v)
3752                 return ERR_PTR(-ENODEV);
3753
3754         if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) {
3755                 ret = -EINVAL;
3756                 goto error;
3757         }
3758
3759         if (v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
3760             v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3761             v->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
3762                 ret = -EINVAL;
3763                 goto error;
3764         }
3765
3766         if (!netif_running(v)) {
3767                 ret = -ENETDOWN;
3768                 goto error;
3769         }
3770
3771         return v;
3772  error:
3773         dev_put(v);
3774         return ERR_PTR(ret);
3775 }
3776
3777 static struct nla_policy
3778 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] __read_mostly = {
3779         [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
3780         [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
3781 };
3782
3783 static int nl80211_parse_sta_wme(struct genl_info *info,
3784                                  struct station_parameters *params)
3785 {
3786         struct nlattr *tb[NL80211_STA_WME_MAX + 1];
3787         struct nlattr *nla;
3788         int err;
3789
3790         /* parse WME attributes if present */
3791         if (!info->attrs[NL80211_ATTR_STA_WME])
3792                 return 0;
3793
3794         nla = info->attrs[NL80211_ATTR_STA_WME];
3795         err = nla_parse_nested(tb, NL80211_STA_WME_MAX, nla,
3796                                nl80211_sta_wme_policy);
3797         if (err)
3798                 return err;
3799
3800         if (tb[NL80211_STA_WME_UAPSD_QUEUES])
3801                 params->uapsd_queues = nla_get_u8(
3802                         tb[NL80211_STA_WME_UAPSD_QUEUES]);
3803         if (params->uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
3804                 return -EINVAL;
3805
3806         if (tb[NL80211_STA_WME_MAX_SP])
3807                 params->max_sp = nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
3808
3809         if (params->max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
3810                 return -EINVAL;
3811
3812         params->sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
3813
3814         return 0;
3815 }
3816
3817 static int nl80211_set_station_tdls(struct genl_info *info,
3818                                     struct station_parameters *params)
3819 {
3820         /* Dummy STA entry gets updated once the peer capabilities are known */
3821         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
3822                 params->ht_capa =
3823                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
3824         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
3825                 params->vht_capa =
3826                         nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
3827
3828         return nl80211_parse_sta_wme(info, params);
3829 }
3830
3831 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
3832 {
3833         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3834         struct net_device *dev = info->user_ptr[1];
3835         struct station_parameters params;
3836         u8 *mac_addr;
3837         int err;
3838
3839         memset(&params, 0, sizeof(params));
3840
3841         params.listen_interval = -1;
3842
3843         if (!rdev->ops->change_station)
3844                 return -EOPNOTSUPP;
3845
3846         if (info->attrs[NL80211_ATTR_STA_AID])
3847                 return -EINVAL;
3848
3849         if (!info->attrs[NL80211_ATTR_MAC])
3850                 return -EINVAL;
3851
3852         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3853
3854         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
3855                 params.supported_rates =
3856                         nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
3857                 params.supported_rates_len =
3858                         nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
3859         }
3860
3861         if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
3862                 params.capability =
3863                         nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
3864                 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
3865         }
3866
3867         if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
3868                 params.ext_capab =
3869                         nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
3870                 params.ext_capab_len =
3871                         nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
3872         }
3873
3874         if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
3875                 return -EINVAL;
3876
3877         if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
3878                 return -EINVAL;
3879
3880         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
3881                 params.plink_action =
3882                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
3883                 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
3884                         return -EINVAL;
3885         }
3886
3887         if (info->attrs[NL80211_ATTR_STA_PLINK_STATE]) {
3888                 params.plink_state =
3889                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
3890                 if (params.plink_state >= NUM_NL80211_PLINK_STATES)
3891                         return -EINVAL;
3892                 params.sta_modify_mask |= STATION_PARAM_APPLY_PLINK_STATE;
3893         }
3894
3895         if (info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]) {
3896                 enum nl80211_mesh_power_mode pm = nla_get_u32(
3897                         info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]);
3898
3899                 if (pm <= NL80211_MESH_POWER_UNKNOWN ||
3900                     pm > NL80211_MESH_POWER_MAX)
3901                         return -EINVAL;
3902
3903                 params.local_pm = pm;
3904         }
3905
3906         /* Include parameters for TDLS peer (will check later) */
3907         err = nl80211_set_station_tdls(info, &params);
3908         if (err)
3909                 return err;
3910
3911         params.vlan = get_vlan(info, rdev);
3912         if (IS_ERR(params.vlan))
3913                 return PTR_ERR(params.vlan);
3914
3915         switch (dev->ieee80211_ptr->iftype) {
3916         case NL80211_IFTYPE_AP:
3917         case NL80211_IFTYPE_AP_VLAN:
3918         case NL80211_IFTYPE_P2P_GO:
3919         case NL80211_IFTYPE_P2P_CLIENT:
3920         case NL80211_IFTYPE_STATION:
3921         case NL80211_IFTYPE_ADHOC:
3922         case NL80211_IFTYPE_MESH_POINT:
3923                 break;
3924         default:
3925                 err = -EOPNOTSUPP;
3926                 goto out_put_vlan;
3927         }
3928
3929         /* driver will call cfg80211_check_station_change() */
3930         err = rdev_change_station(rdev, dev, mac_addr, &params);
3931
3932  out_put_vlan:
3933         if (params.vlan)
3934                 dev_put(params.vlan);
3935
3936         return err;
3937 }
3938
3939 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
3940 {
3941         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3942         int err;
3943         struct net_device *dev = info->user_ptr[1];
3944         struct station_parameters params;
3945         u8 *mac_addr = NULL;
3946
3947         memset(&params, 0, sizeof(params));
3948
3949         if (!rdev->ops->add_station)
3950                 return -EOPNOTSUPP;
3951
3952         if (!info->attrs[NL80211_ATTR_MAC])
3953                 return -EINVAL;
3954
3955         if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
3956                 return -EINVAL;
3957
3958         if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
3959                 return -EINVAL;
3960
3961         if (!info->attrs[NL80211_ATTR_STA_AID])
3962                 return -EINVAL;
3963
3964         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3965         params.supported_rates =
3966                 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
3967         params.supported_rates_len =
3968                 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
3969         params.listen_interval =
3970                 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
3971
3972         params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
3973         if (!params.aid || params.aid > IEEE80211_MAX_AID)
3974                 return -EINVAL;
3975
3976         if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
3977                 params.capability =
3978                         nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
3979                 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
3980         }
3981
3982         if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
3983                 params.ext_capab =
3984                         nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
3985                 params.ext_capab_len =
3986                         nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
3987         }
3988
3989         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
3990                 params.ht_capa =
3991                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
3992
3993         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
3994                 params.vht_capa =
3995                         nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
3996
3997         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
3998                 params.plink_action =
3999                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
4000                 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
4001                         return -EINVAL;
4002         }
4003
4004         err = nl80211_parse_sta_wme(info, &params);
4005         if (err)
4006                 return err;
4007
4008         if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
4009                 return -EINVAL;
4010
4011         /* When you run into this, adjust the code below for the new flag */
4012         BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
4013
4014         switch (dev->ieee80211_ptr->iftype) {
4015         case NL80211_IFTYPE_AP:
4016         case NL80211_IFTYPE_AP_VLAN:
4017         case NL80211_IFTYPE_P2P_GO:
4018                 /* ignore WME attributes if iface/sta is not capable */
4019                 if (!(rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) ||
4020                     !(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)))
4021                         params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4022
4023                 /* TDLS peers cannot be added */
4024                 if (params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
4025                         return -EINVAL;
4026                 /* but don't bother the driver with it */
4027                 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
4028
4029                 /* allow authenticated/associated only if driver handles it */
4030                 if (!(rdev->wiphy.features &
4031                                 NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
4032                     params.sta_flags_mask &
4033                                 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4034                                  BIT(NL80211_STA_FLAG_ASSOCIATED)))
4035                         return -EINVAL;
4036
4037                 /* must be last in here for error handling */
4038                 params.vlan = get_vlan(info, rdev);
4039                 if (IS_ERR(params.vlan))
4040                         return PTR_ERR(params.vlan);
4041                 break;
4042         case NL80211_IFTYPE_MESH_POINT:
4043                 /* ignore uAPSD data */
4044                 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4045
4046                 /* associated is disallowed */
4047                 if (params.sta_flags_mask & BIT(NL80211_STA_FLAG_ASSOCIATED))
4048                         return -EINVAL;
4049                 /* TDLS peers cannot be added */
4050                 if (params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
4051                         return -EINVAL;
4052                 break;
4053         case NL80211_IFTYPE_STATION:
4054         case NL80211_IFTYPE_P2P_CLIENT:
4055                 /* ignore uAPSD data */
4056                 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4057
4058                 /* these are disallowed */
4059                 if (params.sta_flags_mask &
4060                                 (BIT(NL80211_STA_FLAG_ASSOCIATED) |
4061                                  BIT(NL80211_STA_FLAG_AUTHENTICATED)))
4062                         return -EINVAL;
4063                 /* Only TDLS peers can be added */
4064                 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
4065                         return -EINVAL;
4066                 /* Can only add if TDLS ... */
4067                 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS))
4068                         return -EOPNOTSUPP;
4069                 /* ... with external setup is supported */
4070                 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP))
4071                         return -EOPNOTSUPP;
4072                 /*
4073                  * Older wpa_supplicant versions always mark the TDLS peer
4074                  * as authorized, but it shouldn't yet be.
4075                  */
4076                 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_AUTHORIZED);
4077                 break;
4078         default:
4079                 return -EOPNOTSUPP;
4080         }
4081
4082         /* be aware of params.vlan when changing code here */
4083
4084         err = rdev_add_station(rdev, dev, mac_addr, &params);
4085
4086         if (params.vlan)
4087                 dev_put(params.vlan);
4088         return err;
4089 }
4090
4091 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
4092 {
4093         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4094         struct net_device *dev = info->user_ptr[1];
4095         u8 *mac_addr = NULL;
4096
4097         if (info->attrs[NL80211_ATTR_MAC])
4098                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4099
4100         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4101             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
4102             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
4103             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4104                 return -EINVAL;
4105
4106         if (!rdev->ops->del_station)
4107                 return -EOPNOTSUPP;
4108
4109         return rdev_del_station(rdev, dev, mac_addr);
4110 }
4111
4112 static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq,
4113                                 int flags, struct net_device *dev,
4114                                 u8 *dst, u8 *next_hop,
4115                                 struct mpath_info *pinfo)
4116 {
4117         void *hdr;
4118         struct nlattr *pinfoattr;
4119
4120         hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_STATION);
4121         if (!hdr)
4122                 return -1;
4123
4124         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
4125             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
4126             nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) ||
4127             nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation))
4128                 goto nla_put_failure;
4129
4130         pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO);
4131         if (!pinfoattr)
4132                 goto nla_put_failure;
4133         if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) &&
4134             nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
4135                         pinfo->frame_qlen))
4136                 goto nla_put_failure;
4137         if (((pinfo->filled & MPATH_INFO_SN) &&
4138              nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) ||
4139             ((pinfo->filled & MPATH_INFO_METRIC) &&
4140              nla_put_u32(msg, NL80211_MPATH_INFO_METRIC,
4141                          pinfo->metric)) ||
4142             ((pinfo->filled & MPATH_INFO_EXPTIME) &&
4143              nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME,
4144                          pinfo->exptime)) ||
4145             ((pinfo->filled & MPATH_INFO_FLAGS) &&
4146              nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS,
4147                         pinfo->flags)) ||
4148             ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) &&
4149              nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
4150                          pinfo->discovery_timeout)) ||
4151             ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) &&
4152              nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
4153                         pinfo->discovery_retries)))
4154                 goto nla_put_failure;
4155
4156         nla_nest_end(msg, pinfoattr);
4157
4158         return genlmsg_end(msg, hdr);
4159
4160  nla_put_failure:
4161         genlmsg_cancel(msg, hdr);
4162         return -EMSGSIZE;
4163 }
4164
4165 static int nl80211_dump_mpath(struct sk_buff *skb,
4166                               struct netlink_callback *cb)
4167 {
4168         struct mpath_info pinfo;
4169         struct cfg80211_registered_device *dev;
4170         struct net_device *netdev;
4171         u8 dst[ETH_ALEN];
4172         u8 next_hop[ETH_ALEN];
4173         int path_idx = cb->args[1];
4174         int err;
4175
4176         err = nl80211_prepare_netdev_dump(skb, cb, &dev, &netdev);
4177         if (err)
4178                 return err;
4179
4180         if (!dev->ops->dump_mpath) {
4181                 err = -EOPNOTSUPP;
4182                 goto out_err;
4183         }
4184
4185         if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) {
4186                 err = -EOPNOTSUPP;
4187                 goto out_err;
4188         }
4189
4190         while (1) {
4191                 err = rdev_dump_mpath(dev, netdev, path_idx, dst, next_hop,
4192                                       &pinfo);
4193                 if (err == -ENOENT)
4194                         break;
4195                 if (err)
4196                         goto out_err;
4197
4198                 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
4199                                        cb->nlh->nlmsg_seq, NLM_F_MULTI,
4200                                        netdev, dst, next_hop,
4201                                        &pinfo) < 0)
4202                         goto out;
4203
4204                 path_idx++;
4205         }
4206
4207
4208  out:
4209         cb->args[1] = path_idx;
4210         err = skb->len;
4211  out_err:
4212         nl80211_finish_netdev_dump(dev);
4213         return err;
4214 }
4215
4216 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
4217 {
4218         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4219         int err;
4220         struct net_device *dev = info->user_ptr[1];
4221         struct mpath_info pinfo;
4222         struct sk_buff *msg;
4223         u8 *dst = NULL;
4224         u8 next_hop[ETH_ALEN];
4225
4226         memset(&pinfo, 0, sizeof(pinfo));
4227
4228         if (!info->attrs[NL80211_ATTR_MAC])
4229                 return -EINVAL;
4230
4231         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4232
4233         if (!rdev->ops->get_mpath)
4234                 return -EOPNOTSUPP;
4235
4236         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4237                 return -EOPNOTSUPP;
4238
4239         err = rdev_get_mpath(rdev, dev, dst, next_hop, &pinfo);
4240         if (err)
4241                 return err;
4242
4243         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4244         if (!msg)
4245                 return -ENOMEM;
4246
4247         if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
4248                                  dev, dst, next_hop, &pinfo) < 0) {
4249                 nlmsg_free(msg);
4250                 return -ENOBUFS;
4251         }
4252
4253         return genlmsg_reply(msg, info);
4254 }
4255
4256 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
4257 {
4258         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4259         struct net_device *dev = info->user_ptr[1];
4260         u8 *dst = NULL;
4261         u8 *next_hop = NULL;
4262
4263         if (!info->attrs[NL80211_ATTR_MAC])
4264                 return -EINVAL;
4265
4266         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
4267                 return -EINVAL;
4268
4269         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4270         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
4271
4272         if (!rdev->ops->change_mpath)
4273                 return -EOPNOTSUPP;
4274
4275         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4276                 return -EOPNOTSUPP;
4277
4278         return rdev_change_mpath(rdev, dev, dst, next_hop);
4279 }
4280
4281 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
4282 {
4283         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4284         struct net_device *dev = info->user_ptr[1];
4285         u8 *dst = NULL;
4286         u8 *next_hop = NULL;
4287
4288         if (!info->attrs[NL80211_ATTR_MAC])
4289                 return -EINVAL;
4290
4291         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
4292                 return -EINVAL;
4293
4294         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4295         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
4296
4297         if (!rdev->ops->add_mpath)
4298                 return -EOPNOTSUPP;
4299
4300         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4301                 return -EOPNOTSUPP;
4302
4303         return rdev_add_mpath(rdev, dev, dst, next_hop);
4304 }
4305
4306 static int nl80211_del_mpath(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         u8 *dst = NULL;
4311
4312         if (info->attrs[NL80211_ATTR_MAC])
4313                 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4314
4315         if (!rdev->ops->del_mpath)
4316                 return -EOPNOTSUPP;
4317
4318         return rdev_del_mpath(rdev, dev, dst);
4319 }
4320
4321 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
4322 {
4323         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4324         struct net_device *dev = info->user_ptr[1];
4325         struct bss_parameters params;
4326
4327         memset(&params, 0, sizeof(params));
4328         /* default to not changing parameters */
4329         params.use_cts_prot = -1;
4330         params.use_short_preamble = -1;
4331         params.use_short_slot_time = -1;
4332         params.ap_isolate = -1;
4333         params.ht_opmode = -1;
4334         params.p2p_ctwindow = -1;
4335         params.p2p_opp_ps = -1;
4336
4337         if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
4338                 params.use_cts_prot =
4339                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
4340         if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
4341                 params.use_short_preamble =
4342                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
4343         if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
4344                 params.use_short_slot_time =
4345                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
4346         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
4347                 params.basic_rates =
4348                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4349                 params.basic_rates_len =
4350                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4351         }
4352         if (info->attrs[NL80211_ATTR_AP_ISOLATE])
4353                 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
4354         if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
4355                 params.ht_opmode =
4356                         nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
4357
4358         if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
4359                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4360                         return -EINVAL;
4361                 params.p2p_ctwindow =
4362                         nla_get_s8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
4363                 if (params.p2p_ctwindow < 0)
4364                         return -EINVAL;
4365                 if (params.p2p_ctwindow != 0 &&
4366                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
4367                         return -EINVAL;
4368         }
4369
4370         if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
4371                 u8 tmp;
4372
4373                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4374                         return -EINVAL;
4375                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
4376                 if (tmp > 1)
4377                         return -EINVAL;
4378                 params.p2p_opp_ps = tmp;
4379                 if (params.p2p_opp_ps &&
4380                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
4381                         return -EINVAL;
4382         }
4383
4384         if (!rdev->ops->change_bss)
4385                 return -EOPNOTSUPP;
4386
4387         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4388             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4389                 return -EOPNOTSUPP;
4390
4391         return rdev_change_bss(rdev, dev, &params);
4392 }
4393
4394 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
4395         [NL80211_ATTR_REG_RULE_FLAGS]           = { .type = NLA_U32 },
4396         [NL80211_ATTR_FREQ_RANGE_START]         = { .type = NLA_U32 },
4397         [NL80211_ATTR_FREQ_RANGE_END]           = { .type = NLA_U32 },
4398         [NL80211_ATTR_FREQ_RANGE_MAX_BW]        = { .type = NLA_U32 },
4399         [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]  = { .type = NLA_U32 },
4400         [NL80211_ATTR_POWER_RULE_MAX_EIRP]      = { .type = NLA_U32 },
4401 };
4402
4403 static int parse_reg_rule(struct nlattr *tb[],
4404         struct ieee80211_reg_rule *reg_rule)
4405 {
4406         struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
4407         struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
4408
4409         if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
4410                 return -EINVAL;
4411         if (!tb[NL80211_ATTR_FREQ_RANGE_START])
4412                 return -EINVAL;
4413         if (!tb[NL80211_ATTR_FREQ_RANGE_END])
4414                 return -EINVAL;
4415         if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
4416                 return -EINVAL;
4417         if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
4418                 return -EINVAL;
4419
4420         reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
4421
4422         freq_range->start_freq_khz =
4423                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
4424         freq_range->end_freq_khz =
4425                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
4426         freq_range->max_bandwidth_khz =
4427                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
4428
4429         power_rule->max_eirp =
4430                 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
4431
4432         if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
4433                 power_rule->max_antenna_gain =
4434                         nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
4435
4436         return 0;
4437 }
4438
4439 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
4440 {
4441         int r;
4442         char *data = NULL;
4443         enum nl80211_user_reg_hint_type user_reg_hint_type;
4444
4445         /*
4446          * You should only get this when cfg80211 hasn't yet initialized
4447          * completely when built-in to the kernel right between the time
4448          * window between nl80211_init() and regulatory_init(), if that is
4449          * even possible.
4450          */
4451         if (unlikely(!rcu_access_pointer(cfg80211_regdomain)))
4452                 return -EINPROGRESS;
4453
4454         if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
4455                 return -EINVAL;
4456
4457         data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
4458
4459         if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE])
4460                 user_reg_hint_type =
4461                   nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]);
4462         else
4463                 user_reg_hint_type = NL80211_USER_REG_HINT_USER;
4464
4465         switch (user_reg_hint_type) {
4466         case NL80211_USER_REG_HINT_USER:
4467         case NL80211_USER_REG_HINT_CELL_BASE:
4468                 break;
4469         default:
4470                 return -EINVAL;
4471         }
4472
4473         r = regulatory_hint_user(data, user_reg_hint_type);
4474
4475         return r;
4476 }
4477
4478 static int nl80211_get_mesh_config(struct sk_buff *skb,
4479                                    struct genl_info *info)
4480 {
4481         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4482         struct net_device *dev = info->user_ptr[1];
4483         struct wireless_dev *wdev = dev->ieee80211_ptr;
4484         struct mesh_config cur_params;
4485         int err = 0;
4486         void *hdr;
4487         struct nlattr *pinfoattr;
4488         struct sk_buff *msg;
4489
4490         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
4491                 return -EOPNOTSUPP;
4492
4493         if (!rdev->ops->get_mesh_config)
4494                 return -EOPNOTSUPP;
4495
4496         wdev_lock(wdev);
4497         /* If not connected, get default parameters */
4498         if (!wdev->mesh_id_len)
4499                 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
4500         else
4501                 err = rdev_get_mesh_config(rdev, dev, &cur_params);
4502         wdev_unlock(wdev);
4503
4504         if (err)
4505                 return err;
4506
4507         /* Draw up a netlink message to send back */
4508         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4509         if (!msg)
4510                 return -ENOMEM;
4511         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
4512                              NL80211_CMD_GET_MESH_CONFIG);
4513         if (!hdr)
4514                 goto out;
4515         pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG);
4516         if (!pinfoattr)
4517                 goto nla_put_failure;
4518         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
4519             nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
4520                         cur_params.dot11MeshRetryTimeout) ||
4521             nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
4522                         cur_params.dot11MeshConfirmTimeout) ||
4523             nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
4524                         cur_params.dot11MeshHoldingTimeout) ||
4525             nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
4526                         cur_params.dot11MeshMaxPeerLinks) ||
4527             nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES,
4528                        cur_params.dot11MeshMaxRetries) ||
4529             nla_put_u8(msg, NL80211_MESHCONF_TTL,
4530                        cur_params.dot11MeshTTL) ||
4531             nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL,
4532                        cur_params.element_ttl) ||
4533             nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
4534                        cur_params.auto_open_plinks) ||
4535             nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
4536                         cur_params.dot11MeshNbrOffsetMaxNeighbor) ||
4537             nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
4538                        cur_params.dot11MeshHWMPmaxPREQretries) ||
4539             nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
4540                         cur_params.path_refresh_time) ||
4541             nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
4542                         cur_params.min_discovery_timeout) ||
4543             nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
4544                         cur_params.dot11MeshHWMPactivePathTimeout) ||
4545             nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
4546                         cur_params.dot11MeshHWMPpreqMinInterval) ||
4547             nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
4548                         cur_params.dot11MeshHWMPperrMinInterval) ||
4549             nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
4550                         cur_params.dot11MeshHWMPnetDiameterTraversalTime) ||
4551             nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
4552                        cur_params.dot11MeshHWMPRootMode) ||
4553             nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
4554                         cur_params.dot11MeshHWMPRannInterval) ||
4555             nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
4556                        cur_params.dot11MeshGateAnnouncementProtocol) ||
4557             nla_put_u8(msg, NL80211_MESHCONF_FORWARDING,
4558                        cur_params.dot11MeshForwarding) ||
4559             nla_put_u32(msg, NL80211_MESHCONF_RSSI_THRESHOLD,
4560                         cur_params.rssi_threshold) ||
4561             nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE,
4562                         cur_params.ht_opmode) ||
4563             nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
4564                         cur_params.dot11MeshHWMPactivePathToRootTimeout) ||
4565             nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
4566                         cur_params.dot11MeshHWMProotInterval) ||
4567             nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
4568                         cur_params.dot11MeshHWMPconfirmationInterval) ||
4569             nla_put_u32(msg, NL80211_MESHCONF_POWER_MODE,
4570                         cur_params.power_mode) ||
4571             nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW,
4572                         cur_params.dot11MeshAwakeWindowDuration))
4573                 goto nla_put_failure;
4574         nla_nest_end(msg, pinfoattr);
4575         genlmsg_end(msg, hdr);
4576         return genlmsg_reply(msg, info);
4577
4578  nla_put_failure:
4579         genlmsg_cancel(msg, hdr);
4580  out:
4581         nlmsg_free(msg);
4582         return -ENOBUFS;
4583 }
4584
4585 static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
4586         [NL80211_MESHCONF_RETRY_TIMEOUT] = { .type = NLA_U16 },
4587         [NL80211_MESHCONF_CONFIRM_TIMEOUT] = { .type = NLA_U16 },
4588         [NL80211_MESHCONF_HOLDING_TIMEOUT] = { .type = NLA_U16 },
4589         [NL80211_MESHCONF_MAX_PEER_LINKS] = { .type = NLA_U16 },
4590         [NL80211_MESHCONF_MAX_RETRIES] = { .type = NLA_U8 },
4591         [NL80211_MESHCONF_TTL] = { .type = NLA_U8 },
4592         [NL80211_MESHCONF_ELEMENT_TTL] = { .type = NLA_U8 },
4593         [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = { .type = NLA_U8 },
4594         [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] = { .type = NLA_U32 },
4595         [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
4596         [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
4597         [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = { .type = NLA_U16 },
4598         [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
4599         [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 },
4600         [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] = { .type = NLA_U16 },
4601         [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 },
4602         [NL80211_MESHCONF_HWMP_ROOTMODE] = { .type = NLA_U8 },
4603         [NL80211_MESHCONF_HWMP_RANN_INTERVAL] = { .type = NLA_U16 },
4604         [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = { .type = NLA_U8 },
4605         [NL80211_MESHCONF_FORWARDING] = { .type = NLA_U8 },
4606         [NL80211_MESHCONF_RSSI_THRESHOLD] = { .type = NLA_U32 },
4607         [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 },
4608         [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 },
4609         [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] = { .type = NLA_U16 },
4610         [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] = { .type = NLA_U16 },
4611         [NL80211_MESHCONF_POWER_MODE] = { .type = NLA_U32 },
4612         [NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 },
4613 };
4614
4615 static const struct nla_policy
4616         nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
4617         [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 },
4618         [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
4619         [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
4620         [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
4621         [NL80211_MESH_SETUP_USERSPACE_MPM] = { .type = NLA_FLAG },
4622         [NL80211_MESH_SETUP_IE] = { .type = NLA_BINARY,
4623                                     .len = IEEE80211_MAX_DATA_LEN },
4624         [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
4625 };
4626
4627 static int nl80211_parse_mesh_config(struct genl_info *info,
4628                                      struct mesh_config *cfg,
4629                                      u32 *mask_out)
4630 {
4631         struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
4632         u32 mask = 0;
4633
4634 #define FILL_IN_MESH_PARAM_IF_SET(tb, cfg, param, min, max, mask, attr, fn) \
4635 do {                                                                        \
4636         if (tb[attr]) {                                                     \
4637                 if (fn(tb[attr]) < min || fn(tb[attr]) > max)               \
4638                         return -EINVAL;                                     \
4639                 cfg->param = fn(tb[attr]);                                  \
4640                 mask |= (1 << (attr - 1));                                  \
4641         }                                                                   \
4642 } while (0)
4643
4644
4645         if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
4646                 return -EINVAL;
4647         if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX,
4648                              info->attrs[NL80211_ATTR_MESH_CONFIG],
4649                              nl80211_meshconf_params_policy))
4650                 return -EINVAL;
4651
4652         /* This makes sure that there aren't more than 32 mesh config
4653          * parameters (otherwise our bitfield scheme would not work.) */
4654         BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
4655
4656         /* Fill in the params struct */
4657         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, 1, 255,
4658                                   mask, NL80211_MESHCONF_RETRY_TIMEOUT,
4659                                   nla_get_u16);
4660         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, 1, 255,
4661                                   mask, NL80211_MESHCONF_CONFIRM_TIMEOUT,
4662                                   nla_get_u16);
4663         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, 1, 255,
4664                                   mask, NL80211_MESHCONF_HOLDING_TIMEOUT,
4665                                   nla_get_u16);
4666         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, 0, 255,
4667                                   mask, NL80211_MESHCONF_MAX_PEER_LINKS,
4668                                   nla_get_u16);
4669         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, 0, 16,
4670                                   mask, NL80211_MESHCONF_MAX_RETRIES,
4671                                   nla_get_u8);
4672         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, 1, 255,
4673                                   mask, NL80211_MESHCONF_TTL, nla_get_u8);
4674         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl, 1, 255,
4675                                   mask, NL80211_MESHCONF_ELEMENT_TTL,
4676                                   nla_get_u8);
4677         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, 0, 1,
4678                                   mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
4679                                   nla_get_u8);
4680         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor,
4681                                   1, 255, mask,
4682                                   NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
4683                                   nla_get_u32);
4684         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, 0, 255,
4685                                   mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
4686                                   nla_get_u8);
4687         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, 1, 65535,
4688                                   mask, NL80211_MESHCONF_PATH_REFRESH_TIME,
4689                                   nla_get_u32);
4690         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, 1, 65535,
4691                                   mask, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
4692                                   nla_get_u16);
4693         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
4694                                   1, 65535, mask,
4695                                   NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
4696                                   nla_get_u32);
4697         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval,
4698                                   1, 65535, mask,
4699                                   NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
4700                                   nla_get_u16);
4701         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval,
4702                                   1, 65535, mask,
4703                                   NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
4704                                   nla_get_u16);
4705         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
4706                                   dot11MeshHWMPnetDiameterTraversalTime,
4707                                   1, 65535, mask,
4708                                   NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
4709                                   nla_get_u16);
4710         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, 0, 4,
4711                                   mask, NL80211_MESHCONF_HWMP_ROOTMODE,
4712                                   nla_get_u8);
4713         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, 1, 65535,
4714                                   mask, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
4715                                   nla_get_u16);
4716         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
4717                                   dot11MeshGateAnnouncementProtocol, 0, 1,
4718                                   mask, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
4719                                   nla_get_u8);
4720         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding, 0, 1,
4721                                   mask, NL80211_MESHCONF_FORWARDING,
4722                                   nla_get_u8);
4723         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold, 1, 255,
4724                                   mask, NL80211_MESHCONF_RSSI_THRESHOLD,
4725                                   nla_get_u32);
4726         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, ht_opmode, 0, 16,
4727                                   mask, NL80211_MESHCONF_HT_OPMODE,
4728                                   nla_get_u16);
4729         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathToRootTimeout,
4730                                   1, 65535, mask,
4731                                   NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
4732                                   nla_get_u32);
4733         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval, 1, 65535,
4734                                   mask, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
4735                                   nla_get_u16);
4736         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
4737                                   dot11MeshHWMPconfirmationInterval,
4738                                   1, 65535, mask,
4739                                   NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
4740                                   nla_get_u16);
4741         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, power_mode,
4742                                   NL80211_MESH_POWER_ACTIVE,
4743                                   NL80211_MESH_POWER_MAX,
4744                                   mask, NL80211_MESHCONF_POWER_MODE,
4745                                   nla_get_u32);
4746         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration,
4747                                   0, 65535, mask,
4748                                   NL80211_MESHCONF_AWAKE_WINDOW, nla_get_u16);
4749         if (mask_out)
4750                 *mask_out = mask;
4751
4752         return 0;
4753
4754 #undef FILL_IN_MESH_PARAM_IF_SET
4755 }
4756
4757 static int nl80211_parse_mesh_setup(struct genl_info *info,
4758                                      struct mesh_setup *setup)
4759 {
4760         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4761         struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
4762
4763         if (!info->attrs[NL80211_ATTR_MESH_SETUP])
4764                 return -EINVAL;
4765         if (nla_parse_nested(tb, NL80211_MESH_SETUP_ATTR_MAX,
4766                              info->attrs[NL80211_ATTR_MESH_SETUP],
4767                              nl80211_mesh_setup_params_policy))
4768                 return -EINVAL;
4769
4770         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])
4771                 setup->sync_method =
4772                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ?
4773                  IEEE80211_SYNC_METHOD_VENDOR :
4774                  IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET;
4775
4776         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
4777                 setup->path_sel_proto =
4778                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
4779                  IEEE80211_PATH_PROTOCOL_VENDOR :
4780                  IEEE80211_PATH_PROTOCOL_HWMP;
4781
4782         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
4783                 setup->path_metric =
4784                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
4785                  IEEE80211_PATH_METRIC_VENDOR :
4786                  IEEE80211_PATH_METRIC_AIRTIME;
4787
4788
4789         if (tb[NL80211_MESH_SETUP_IE]) {
4790                 struct nlattr *ieattr =
4791                         tb[NL80211_MESH_SETUP_IE];
4792                 if (!is_valid_ie_attr(ieattr))
4793                         return -EINVAL;
4794                 setup->ie = nla_data(ieattr);
4795                 setup->ie_len = nla_len(ieattr);
4796         }
4797         if (tb[NL80211_MESH_SETUP_USERSPACE_MPM] &&
4798             !(rdev->wiphy.features & NL80211_FEATURE_USERSPACE_MPM))
4799                 return -EINVAL;
4800         setup->user_mpm = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_MPM]);
4801         setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
4802         setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
4803         if (setup->is_secure)
4804                 setup->user_mpm = true;
4805
4806         return 0;
4807 }
4808
4809 static int nl80211_update_mesh_config(struct sk_buff *skb,
4810                                       struct genl_info *info)
4811 {
4812         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4813         struct net_device *dev = info->user_ptr[1];
4814         struct wireless_dev *wdev = dev->ieee80211_ptr;
4815         struct mesh_config cfg;
4816         u32 mask;
4817         int err;
4818
4819         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
4820                 return -EOPNOTSUPP;
4821
4822         if (!rdev->ops->update_mesh_config)
4823                 return -EOPNOTSUPP;
4824
4825         err = nl80211_parse_mesh_config(info, &cfg, &mask);
4826         if (err)
4827                 return err;
4828
4829         wdev_lock(wdev);
4830         if (!wdev->mesh_id_len)
4831                 err = -ENOLINK;
4832
4833         if (!err)
4834                 err = rdev_update_mesh_config(rdev, dev, mask, &cfg);
4835
4836         wdev_unlock(wdev);
4837
4838         return err;
4839 }
4840
4841 static int nl80211_get_reg(struct sk_buff *skb, struct genl_info *info)
4842 {
4843         const struct ieee80211_regdomain *regdom;
4844         struct sk_buff *msg;
4845         void *hdr = NULL;
4846         struct nlattr *nl_reg_rules;
4847         unsigned int i;
4848         int err = -EINVAL;
4849
4850         mutex_lock(&cfg80211_mutex);
4851
4852         if (!cfg80211_regdomain)
4853                 goto out;
4854
4855         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4856         if (!msg) {
4857                 err = -ENOBUFS;
4858                 goto out;
4859         }
4860
4861         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
4862                              NL80211_CMD_GET_REG);
4863         if (!hdr)
4864                 goto put_failure;
4865
4866         if (reg_last_request_cell_base() &&
4867             nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
4868                         NL80211_USER_REG_HINT_CELL_BASE))
4869                 goto nla_put_failure;
4870
4871         rcu_read_lock();
4872         regdom = rcu_dereference(cfg80211_regdomain);
4873
4874         if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, regdom->alpha2) ||
4875             (regdom->dfs_region &&
4876              nla_put_u8(msg, NL80211_ATTR_DFS_REGION, regdom->dfs_region)))
4877                 goto nla_put_failure_rcu;
4878
4879         nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES);
4880         if (!nl_reg_rules)
4881                 goto nla_put_failure_rcu;
4882
4883         for (i = 0; i < regdom->n_reg_rules; i++) {
4884                 struct nlattr *nl_reg_rule;
4885                 const struct ieee80211_reg_rule *reg_rule;
4886                 const struct ieee80211_freq_range *freq_range;
4887                 const struct ieee80211_power_rule *power_rule;
4888
4889                 reg_rule = &regdom->reg_rules[i];
4890                 freq_range = &reg_rule->freq_range;
4891                 power_rule = &reg_rule->power_rule;
4892
4893                 nl_reg_rule = nla_nest_start(msg, i);
4894                 if (!nl_reg_rule)
4895                         goto nla_put_failure_rcu;
4896
4897                 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS,
4898                                 reg_rule->flags) ||
4899                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START,
4900                                 freq_range->start_freq_khz) ||
4901                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END,
4902                                 freq_range->end_freq_khz) ||
4903                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
4904                                 freq_range->max_bandwidth_khz) ||
4905                     nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
4906                                 power_rule->max_antenna_gain) ||
4907                     nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
4908                                 power_rule->max_eirp))
4909                         goto nla_put_failure_rcu;
4910
4911                 nla_nest_end(msg, nl_reg_rule);
4912         }
4913         rcu_read_unlock();
4914
4915         nla_nest_end(msg, nl_reg_rules);
4916
4917         genlmsg_end(msg, hdr);
4918         err = genlmsg_reply(msg, info);
4919         goto out;
4920
4921 nla_put_failure_rcu:
4922         rcu_read_unlock();
4923 nla_put_failure:
4924         genlmsg_cancel(msg, hdr);
4925 put_failure:
4926         nlmsg_free(msg);
4927         err = -EMSGSIZE;
4928 out:
4929         mutex_unlock(&cfg80211_mutex);
4930         return err;
4931 }
4932
4933 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
4934 {
4935         struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
4936         struct nlattr *nl_reg_rule;
4937         char *alpha2 = NULL;
4938         int rem_reg_rules = 0, r = 0;
4939         u32 num_rules = 0, rule_idx = 0, size_of_regd;
4940         u8 dfs_region = 0;
4941         struct ieee80211_regdomain *rd = NULL;
4942
4943         if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
4944                 return -EINVAL;
4945
4946         if (!info->attrs[NL80211_ATTR_REG_RULES])
4947                 return -EINVAL;
4948
4949         alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
4950
4951         if (info->attrs[NL80211_ATTR_DFS_REGION])
4952                 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]);
4953
4954         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
4955                             rem_reg_rules) {
4956                 num_rules++;
4957                 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
4958                         return -EINVAL;
4959         }
4960
4961         size_of_regd = sizeof(struct ieee80211_regdomain) +
4962                        num_rules * sizeof(struct ieee80211_reg_rule);
4963
4964         rd = kzalloc(size_of_regd, GFP_KERNEL);
4965         if (!rd)
4966                 return -ENOMEM;
4967
4968         rd->n_reg_rules = num_rules;
4969         rd->alpha2[0] = alpha2[0];
4970         rd->alpha2[1] = alpha2[1];
4971
4972         /*
4973          * Disable DFS master mode if the DFS region was
4974          * not supported or known on this kernel.
4975          */
4976         if (reg_supported_dfs_region(dfs_region))
4977                 rd->dfs_region = dfs_region;
4978
4979         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
4980                             rem_reg_rules) {
4981                 nla_parse(tb, NL80211_REG_RULE_ATTR_MAX,
4982                           nla_data(nl_reg_rule), nla_len(nl_reg_rule),
4983                           reg_rule_policy);
4984                 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
4985                 if (r)
4986                         goto bad_reg;
4987
4988                 rule_idx++;
4989
4990                 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
4991                         r = -EINVAL;
4992                         goto bad_reg;
4993                 }
4994         }
4995
4996         mutex_lock(&cfg80211_mutex);
4997
4998         r = set_regdom(rd);
4999         /* set_regdom took ownership */
5000         rd = NULL;
5001         mutex_unlock(&cfg80211_mutex);
5002
5003  bad_reg:
5004         kfree(rd);
5005         return r;
5006 }
5007
5008 static int validate_scan_freqs(struct nlattr *freqs)
5009 {
5010         struct nlattr *attr1, *attr2;
5011         int n_channels = 0, tmp1, tmp2;
5012
5013         nla_for_each_nested(attr1, freqs, tmp1) {
5014                 n_channels++;
5015                 /*
5016                  * Some hardware has a limited channel list for
5017                  * scanning, and it is pretty much nonsensical
5018                  * to scan for a channel twice, so disallow that
5019                  * and don't require drivers to check that the
5020                  * channel list they get isn't longer than what
5021                  * they can scan, as long as they can scan all
5022                  * the channels they registered at once.
5023                  */
5024                 nla_for_each_nested(attr2, freqs, tmp2)
5025                         if (attr1 != attr2 &&
5026                             nla_get_u32(attr1) == nla_get_u32(attr2))
5027                                 return 0;
5028         }
5029
5030         return n_channels;
5031 }
5032
5033 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
5034 {
5035         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5036         struct wireless_dev *wdev = info->user_ptr[1];
5037         struct cfg80211_scan_request *request;
5038         struct nlattr *attr;
5039         struct wiphy *wiphy;
5040         int err, tmp, n_ssids = 0, n_channels, i;
5041         size_t ie_len;
5042
5043         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
5044                 return -EINVAL;
5045
5046         wiphy = &rdev->wiphy;
5047
5048         if (!rdev->ops->scan)
5049                 return -EOPNOTSUPP;
5050
5051         mutex_lock(&rdev->sched_scan_mtx);
5052         if (rdev->scan_req) {
5053                 err = -EBUSY;
5054                 goto unlock;
5055         }
5056
5057         if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5058                 n_channels = validate_scan_freqs(
5059                                 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
5060                 if (!n_channels) {
5061                         err = -EINVAL;
5062                         goto unlock;
5063                 }
5064         } else {
5065                 enum ieee80211_band band;
5066                 n_channels = 0;
5067
5068                 for (band = 0; band < IEEE80211_NUM_BANDS; band++)
5069                         if (wiphy->bands[band])
5070                                 n_channels += wiphy->bands[band]->n_channels;
5071         }
5072
5073         if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
5074                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
5075                         n_ssids++;
5076
5077         if (n_ssids > wiphy->max_scan_ssids) {
5078                 err = -EINVAL;
5079                 goto unlock;
5080         }
5081
5082         if (info->attrs[NL80211_ATTR_IE])
5083                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5084         else
5085                 ie_len = 0;
5086
5087         if (ie_len > wiphy->max_scan_ie_len) {
5088                 err = -EINVAL;
5089                 goto unlock;
5090         }
5091
5092         request = kzalloc(sizeof(*request)
5093                         + sizeof(*request->ssids) * n_ssids
5094                         + sizeof(*request->channels) * n_channels
5095                         + ie_len, GFP_KERNEL);
5096         if (!request) {
5097                 err = -ENOMEM;
5098                 goto unlock;
5099         }
5100
5101         if (n_ssids)
5102                 request->ssids = (void *)&request->channels[n_channels];
5103         request->n_ssids = n_ssids;
5104         if (ie_len) {
5105                 if (request->ssids)
5106                         request->ie = (void *)(request->ssids + n_ssids);
5107                 else
5108                         request->ie = (void *)(request->channels + n_channels);
5109         }
5110
5111         i = 0;
5112         if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5113                 /* user specified, bail out if channel not found */
5114                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) {
5115                         struct ieee80211_channel *chan;
5116
5117                         chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
5118
5119                         if (!chan) {
5120                                 err = -EINVAL;
5121                                 goto out_free;
5122                         }
5123
5124                         /* ignore disabled channels */
5125                         if (chan->flags & IEEE80211_CHAN_DISABLED)
5126                                 continue;
5127
5128                         request->channels[i] = chan;
5129                         i++;
5130                 }
5131         } else {
5132                 enum ieee80211_band band;
5133
5134                 /* all channels */
5135                 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
5136                         int j;
5137                         if (!wiphy->bands[band])
5138                                 continue;
5139                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
5140                                 struct ieee80211_channel *chan;
5141
5142                                 chan = &wiphy->bands[band]->channels[j];
5143
5144                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
5145                                         continue;
5146
5147                                 request->channels[i] = chan;
5148                                 i++;
5149                         }
5150                 }
5151         }
5152
5153         if (!i) {
5154                 err = -EINVAL;
5155                 goto out_free;
5156         }
5157
5158         request->n_channels = i;
5159
5160         i = 0;
5161         if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
5162                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
5163                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
5164                                 err = -EINVAL;
5165                                 goto out_free;
5166                         }
5167                         request->ssids[i].ssid_len = nla_len(attr);
5168                         memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
5169                         i++;
5170                 }
5171         }
5172
5173         if (info->attrs[NL80211_ATTR_IE]) {
5174                 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5175                 memcpy((void *)request->ie,
5176                        nla_data(info->attrs[NL80211_ATTR_IE]),
5177                        request->ie_len);
5178         }
5179
5180         for (i = 0; i < IEEE80211_NUM_BANDS; i++)
5181                 if (wiphy->bands[i])
5182                         request->rates[i] =
5183                                 (1 << wiphy->bands[i]->n_bitrates) - 1;
5184
5185         if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
5186                 nla_for_each_nested(attr,
5187                                     info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
5188                                     tmp) {
5189                         enum ieee80211_band band = nla_type(attr);
5190
5191                         if (band < 0 || band >= IEEE80211_NUM_BANDS) {
5192                                 err = -EINVAL;
5193                                 goto out_free;
5194                         }
5195                         err = ieee80211_get_ratemask(wiphy->bands[band],
5196                                                      nla_data(attr),
5197                                                      nla_len(attr),
5198                                                      &request->rates[band]);
5199                         if (err)
5200                                 goto out_free;
5201                 }
5202         }
5203
5204         if (info->attrs[NL80211_ATTR_SCAN_FLAGS]) {
5205                 request->flags = nla_get_u32(
5206                         info->attrs[NL80211_ATTR_SCAN_FLAGS]);
5207                 if (((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
5208                      !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) ||
5209                     ((request->flags & NL80211_SCAN_FLAG_FLUSH) &&
5210                      !(wiphy->features & NL80211_FEATURE_SCAN_FLUSH))) {
5211                         err = -EOPNOTSUPP;
5212                         goto out_free;
5213                 }
5214         }
5215
5216         request->no_cck =
5217                 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
5218
5219         request->wdev = wdev;
5220         request->wiphy = &rdev->wiphy;
5221         request->scan_start = jiffies;
5222
5223         rdev->scan_req = request;
5224         err = rdev_scan(rdev, request);
5225
5226         if (!err) {
5227                 nl80211_send_scan_start(rdev, wdev);
5228                 if (wdev->netdev)
5229                         dev_hold(wdev->netdev);
5230         } else {
5231  out_free:
5232                 rdev->scan_req = NULL;
5233                 kfree(request);
5234         }
5235
5236  unlock:
5237         mutex_unlock(&rdev->sched_scan_mtx);
5238         return err;
5239 }
5240
5241 static int nl80211_start_sched_scan(struct sk_buff *skb,
5242                                     struct genl_info *info)
5243 {
5244         struct cfg80211_sched_scan_request *request;
5245         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5246         struct net_device *dev = info->user_ptr[1];
5247         struct nlattr *attr;
5248         struct wiphy *wiphy;
5249         int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i;
5250         u32 interval;
5251         enum ieee80211_band band;
5252         size_t ie_len;
5253         struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
5254
5255         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
5256             !rdev->ops->sched_scan_start)
5257                 return -EOPNOTSUPP;
5258
5259         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
5260                 return -EINVAL;
5261
5262         if (!info->attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
5263                 return -EINVAL;
5264
5265         interval = nla_get_u32(info->attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
5266         if (interval == 0)
5267                 return -EINVAL;
5268
5269         wiphy = &rdev->wiphy;
5270
5271         if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5272                 n_channels = validate_scan_freqs(
5273                                 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
5274                 if (!n_channels)
5275                         return -EINVAL;
5276         } else {
5277                 n_channels = 0;
5278
5279                 for (band = 0; band < IEEE80211_NUM_BANDS; band++)
5280                         if (wiphy->bands[band])
5281                                 n_channels += wiphy->bands[band]->n_channels;
5282         }
5283
5284         if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
5285                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS],
5286                                     tmp)
5287                         n_ssids++;
5288
5289         if (n_ssids > wiphy->max_sched_scan_ssids)
5290                 return -EINVAL;
5291
5292         if (info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH])
5293                 nla_for_each_nested(attr,
5294                                     info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
5295                                     tmp)
5296                         n_match_sets++;
5297
5298         if (n_match_sets > wiphy->max_match_sets)
5299                 return -EINVAL;
5300
5301         if (info->attrs[NL80211_ATTR_IE])
5302                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5303         else
5304                 ie_len = 0;
5305
5306         if (ie_len > wiphy->max_sched_scan_ie_len)
5307                 return -EINVAL;
5308
5309         mutex_lock(&rdev->sched_scan_mtx);
5310
5311         if (rdev->sched_scan_req) {
5312                 err = -EINPROGRESS;
5313                 goto out;
5314         }
5315
5316         request = kzalloc(sizeof(*request)
5317                         + sizeof(*request->ssids) * n_ssids
5318                         + sizeof(*request->match_sets) * n_match_sets
5319                         + sizeof(*request->channels) * n_channels
5320                         + ie_len, GFP_KERNEL);
5321         if (!request) {
5322                 err = -ENOMEM;
5323                 goto out;
5324         }
5325
5326         if (n_ssids)
5327                 request->ssids = (void *)&request->channels[n_channels];
5328         request->n_ssids = n_ssids;
5329         if (ie_len) {
5330                 if (request->ssids)
5331                         request->ie = (void *)(request->ssids + n_ssids);
5332                 else
5333                         request->ie = (void *)(request->channels + n_channels);
5334         }
5335
5336         if (n_match_sets) {
5337                 if (request->ie)
5338                         request->match_sets = (void *)(request->ie + ie_len);
5339                 else if (request->ssids)
5340                         request->match_sets =
5341                                 (void *)(request->ssids + n_ssids);
5342                 else
5343                         request->match_sets =
5344                                 (void *)(request->channels + n_channels);
5345         }
5346         request->n_match_sets = n_match_sets;
5347
5348         i = 0;
5349         if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5350                 /* user specified, bail out if channel not found */
5351                 nla_for_each_nested(attr,
5352                                     info->attrs[NL80211_ATTR_SCAN_FREQUENCIES],
5353                                     tmp) {
5354                         struct ieee80211_channel *chan;
5355
5356                         chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
5357
5358                         if (!chan) {
5359                                 err = -EINVAL;
5360                                 goto out_free;
5361                         }
5362
5363                         /* ignore disabled channels */
5364                         if (chan->flags & IEEE80211_CHAN_DISABLED)
5365                                 continue;
5366
5367                         request->channels[i] = chan;
5368                         i++;
5369                 }
5370         } else {
5371                 /* all channels */
5372                 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
5373                         int j;
5374                         if (!wiphy->bands[band])
5375                                 continue;
5376                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
5377                                 struct ieee80211_channel *chan;
5378
5379                                 chan = &wiphy->bands[band]->channels[j];
5380
5381                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
5382                                         continue;
5383
5384                                 request->channels[i] = chan;
5385                                 i++;
5386                         }
5387                 }
5388         }
5389
5390         if (!i) {
5391                 err = -EINVAL;
5392                 goto out_free;
5393         }
5394
5395         request->n_channels = i;
5396
5397         i = 0;
5398         if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
5399                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS],
5400                                     tmp) {
5401                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
5402                                 err = -EINVAL;
5403                                 goto out_free;
5404                         }
5405                         request->ssids[i].ssid_len = nla_len(attr);
5406                         memcpy(request->ssids[i].ssid, nla_data(attr),
5407                                nla_len(attr));
5408                         i++;
5409                 }
5410         }
5411
5412         i = 0;
5413         if (info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
5414                 nla_for_each_nested(attr,
5415                                     info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
5416                                     tmp) {
5417                         struct nlattr *ssid, *rssi;
5418
5419                         nla_parse(tb, NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
5420                                   nla_data(attr), nla_len(attr),
5421                                   nl80211_match_policy);
5422                         ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID];
5423                         if (ssid) {
5424                                 if (nla_len(ssid) > IEEE80211_MAX_SSID_LEN) {
5425                                         err = -EINVAL;
5426                                         goto out_free;
5427                                 }
5428                                 memcpy(request->match_sets[i].ssid.ssid,
5429                                        nla_data(ssid), nla_len(ssid));
5430                                 request->match_sets[i].ssid.ssid_len =
5431                                         nla_len(ssid);
5432                         }
5433                         rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
5434                         if (rssi)
5435                                 request->rssi_thold = nla_get_u32(rssi);
5436                         else
5437                                 request->rssi_thold =
5438                                                    NL80211_SCAN_RSSI_THOLD_OFF;
5439                         i++;
5440                 }
5441         }
5442
5443         if (info->attrs[NL80211_ATTR_IE]) {
5444                 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5445                 memcpy((void *)request->ie,
5446                        nla_data(info->attrs[NL80211_ATTR_IE]),
5447                        request->ie_len);
5448         }
5449
5450         if (info->attrs[NL80211_ATTR_SCAN_FLAGS]) {
5451                 request->flags = nla_get_u32(
5452                         info->attrs[NL80211_ATTR_SCAN_FLAGS]);
5453                 if (((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
5454                      !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) ||
5455                     ((request->flags & NL80211_SCAN_FLAG_FLUSH) &&
5456                      !(wiphy->features & NL80211_FEATURE_SCAN_FLUSH))) {
5457                         err = -EOPNOTSUPP;
5458                         goto out_free;
5459                 }
5460         }
5461
5462         request->dev = dev;
5463         request->wiphy = &rdev->wiphy;
5464         request->interval = interval;
5465         request->scan_start = jiffies;
5466
5467         err = rdev_sched_scan_start(rdev, dev, request);
5468         if (!err) {
5469                 rdev->sched_scan_req = request;
5470                 nl80211_send_sched_scan(rdev, dev,
5471                                         NL80211_CMD_START_SCHED_SCAN);
5472                 goto out;
5473         }
5474
5475 out_free:
5476         kfree(request);
5477 out:
5478         mutex_unlock(&rdev->sched_scan_mtx);
5479         return err;
5480 }
5481
5482 static int nl80211_stop_sched_scan(struct sk_buff *skb,
5483                                    struct genl_info *info)
5484 {
5485         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5486         int err;
5487
5488         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
5489             !rdev->ops->sched_scan_stop)
5490                 return -EOPNOTSUPP;
5491
5492         mutex_lock(&rdev->sched_scan_mtx);
5493         err = __cfg80211_stop_sched_scan(rdev, false);
5494         mutex_unlock(&rdev->sched_scan_mtx);
5495
5496         return err;
5497 }
5498
5499 static int nl80211_start_radar_detection(struct sk_buff *skb,
5500                                          struct genl_info *info)
5501 {
5502         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5503         struct net_device *dev = info->user_ptr[1];
5504         struct wireless_dev *wdev = dev->ieee80211_ptr;
5505         struct cfg80211_chan_def chandef;
5506         int err;
5507
5508         err = nl80211_parse_chandef(rdev, info, &chandef);
5509         if (err)
5510                 return err;
5511
5512         if (wdev->cac_started)
5513                 return -EBUSY;
5514
5515         err = cfg80211_chandef_dfs_required(wdev->wiphy, &chandef);
5516         if (err < 0)
5517                 return err;
5518
5519         if (err == 0)
5520                 return -EINVAL;
5521
5522         if (chandef.chan->dfs_state != NL80211_DFS_USABLE)
5523                 return -EINVAL;
5524
5525         if (!rdev->ops->start_radar_detection)
5526                 return -EOPNOTSUPP;
5527
5528         mutex_lock(&rdev->devlist_mtx);
5529         err = cfg80211_can_use_iftype_chan(rdev, wdev, wdev->iftype,
5530                                            chandef.chan, CHAN_MODE_SHARED,
5531                                            BIT(chandef.width));
5532         if (err)
5533                 goto err_locked;
5534
5535         err = rdev->ops->start_radar_detection(&rdev->wiphy, dev, &chandef);
5536         if (!err) {
5537                 wdev->channel = chandef.chan;
5538                 wdev->cac_started = true;
5539                 wdev->cac_start_time = jiffies;
5540         }
5541 err_locked:
5542         mutex_unlock(&rdev->devlist_mtx);
5543
5544         return err;
5545 }
5546
5547 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
5548                             u32 seq, int flags,
5549                             struct cfg80211_registered_device *rdev,
5550                             struct wireless_dev *wdev,
5551                             struct cfg80211_internal_bss *intbss)
5552 {
5553         struct cfg80211_bss *res = &intbss->pub;
5554         const struct cfg80211_bss_ies *ies;
5555         void *hdr;
5556         struct nlattr *bss;
5557         bool tsf = false;
5558
5559         ASSERT_WDEV_LOCK(wdev);
5560
5561         hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
5562                              NL80211_CMD_NEW_SCAN_RESULTS);
5563         if (!hdr)
5564                 return -1;
5565
5566         genl_dump_check_consistent(cb, hdr, &nl80211_fam);
5567
5568         if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation) ||
5569             nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex))
5570                 goto nla_put_failure;
5571
5572         bss = nla_nest_start(msg, NL80211_ATTR_BSS);
5573         if (!bss)
5574                 goto nla_put_failure;
5575         if ((!is_zero_ether_addr(res->bssid) &&
5576              nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid)))
5577                 goto nla_put_failure;
5578
5579         rcu_read_lock();
5580         ies = rcu_dereference(res->ies);
5581         if (ies) {
5582                 if (nla_put_u64(msg, NL80211_BSS_TSF, ies->tsf))
5583                         goto fail_unlock_rcu;
5584                 tsf = true;
5585                 if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS,
5586                                         ies->len, ies->data))
5587                         goto fail_unlock_rcu;
5588         }
5589         ies = rcu_dereference(res->beacon_ies);
5590         if (ies) {
5591                 if (!tsf && nla_put_u64(msg, NL80211_BSS_TSF, ies->tsf))
5592                         goto fail_unlock_rcu;
5593                 if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES,
5594                                         ies->len, ies->data))
5595                         goto fail_unlock_rcu;
5596         }
5597         rcu_read_unlock();
5598
5599         if (res->beacon_interval &&
5600             nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval))
5601                 goto nla_put_failure;
5602         if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) ||
5603             nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) ||
5604             nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO,
5605                         jiffies_to_msecs(jiffies - intbss->ts)))
5606                 goto nla_put_failure;
5607
5608         switch (rdev->wiphy.signal_type) {
5609         case CFG80211_SIGNAL_TYPE_MBM:
5610                 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal))
5611                         goto nla_put_failure;
5612                 break;
5613         case CFG80211_SIGNAL_TYPE_UNSPEC:
5614                 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal))
5615                         goto nla_put_failure;
5616                 break;
5617         default:
5618                 break;
5619         }
5620
5621         switch (wdev->iftype) {
5622         case NL80211_IFTYPE_P2P_CLIENT:
5623         case NL80211_IFTYPE_STATION:
5624                 if (intbss == wdev->current_bss &&
5625                     nla_put_u32(msg, NL80211_BSS_STATUS,
5626                                 NL80211_BSS_STATUS_ASSOCIATED))
5627                         goto nla_put_failure;
5628                 break;
5629         case NL80211_IFTYPE_ADHOC:
5630                 if (intbss == wdev->current_bss &&
5631                     nla_put_u32(msg, NL80211_BSS_STATUS,
5632                                 NL80211_BSS_STATUS_IBSS_JOINED))
5633                         goto nla_put_failure;
5634                 break;
5635         default:
5636                 break;
5637         }
5638
5639         nla_nest_end(msg, bss);
5640
5641         return genlmsg_end(msg, hdr);
5642
5643  fail_unlock_rcu:
5644         rcu_read_unlock();
5645  nla_put_failure:
5646         genlmsg_cancel(msg, hdr);
5647         return -EMSGSIZE;
5648 }
5649
5650 static int nl80211_dump_scan(struct sk_buff *skb,
5651                              struct netlink_callback *cb)
5652 {
5653         struct cfg80211_registered_device *rdev;
5654         struct net_device *dev;
5655         struct cfg80211_internal_bss *scan;
5656         struct wireless_dev *wdev;
5657         int start = cb->args[1], idx = 0;
5658         int err;
5659
5660         err = nl80211_prepare_netdev_dump(skb, cb, &rdev, &dev);
5661         if (err)
5662                 return err;
5663
5664         wdev = dev->ieee80211_ptr;
5665
5666         wdev_lock(wdev);
5667         spin_lock_bh(&rdev->bss_lock);
5668         cfg80211_bss_expire(rdev);
5669
5670         cb->seq = rdev->bss_generation;
5671
5672         list_for_each_entry(scan, &rdev->bss_list, list) {
5673                 if (++idx <= start)
5674                         continue;
5675                 if (nl80211_send_bss(skb, cb,
5676                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
5677                                 rdev, wdev, scan) < 0) {
5678                         idx--;
5679                         break;
5680                 }
5681         }
5682
5683         spin_unlock_bh(&rdev->bss_lock);
5684         wdev_unlock(wdev);
5685
5686         cb->args[1] = idx;
5687         nl80211_finish_netdev_dump(rdev);
5688
5689         return skb->len;
5690 }
5691
5692 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq,
5693                                 int flags, struct net_device *dev,
5694                                 struct survey_info *survey)
5695 {
5696         void *hdr;
5697         struct nlattr *infoattr;
5698
5699         hdr = nl80211hdr_put(msg, portid, seq, flags,
5700                              NL80211_CMD_NEW_SURVEY_RESULTS);
5701         if (!hdr)
5702                 return -ENOMEM;
5703
5704         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
5705                 goto nla_put_failure;
5706
5707         infoattr = nla_nest_start(msg, NL80211_ATTR_SURVEY_INFO);
5708         if (!infoattr)
5709                 goto nla_put_failure;
5710
5711         if (nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY,
5712                         survey->channel->center_freq))
5713                 goto nla_put_failure;
5714
5715         if ((survey->filled & SURVEY_INFO_NOISE_DBM) &&
5716             nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise))
5717                 goto nla_put_failure;
5718         if ((survey->filled & SURVEY_INFO_IN_USE) &&
5719             nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE))
5720                 goto nla_put_failure;
5721         if ((survey->filled & SURVEY_INFO_CHANNEL_TIME) &&
5722             nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME,
5723                         survey->channel_time))
5724                 goto nla_put_failure;
5725         if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_BUSY) &&
5726             nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_BUSY,
5727                         survey->channel_time_busy))
5728                 goto nla_put_failure;
5729         if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_EXT_BUSY) &&
5730             nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_EXT_BUSY,
5731                         survey->channel_time_ext_busy))
5732                 goto nla_put_failure;
5733         if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_RX) &&
5734             nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_RX,
5735                         survey->channel_time_rx))
5736                 goto nla_put_failure;
5737         if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_TX) &&
5738             nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_TX,
5739                         survey->channel_time_tx))
5740                 goto nla_put_failure;
5741
5742         nla_nest_end(msg, infoattr);
5743
5744         return genlmsg_end(msg, hdr);
5745
5746  nla_put_failure:
5747         genlmsg_cancel(msg, hdr);
5748         return -EMSGSIZE;
5749 }
5750
5751 static int nl80211_dump_survey(struct sk_buff *skb,
5752                         struct netlink_callback *cb)
5753 {
5754         struct survey_info survey;
5755         struct cfg80211_registered_device *dev;
5756         struct net_device *netdev;
5757         int survey_idx = cb->args[1];
5758         int res;
5759
5760         res = nl80211_prepare_netdev_dump(skb, cb, &dev, &netdev);
5761         if (res)
5762                 return res;
5763
5764         if (!dev->ops->dump_survey) {
5765                 res = -EOPNOTSUPP;
5766                 goto out_err;
5767         }
5768
5769         while (1) {
5770                 struct ieee80211_channel *chan;
5771
5772                 res = rdev_dump_survey(dev, netdev, survey_idx, &survey);
5773                 if (res == -ENOENT)
5774                         break;
5775                 if (res)
5776                         goto out_err;
5777
5778                 /* Survey without a channel doesn't make sense */
5779                 if (!survey.channel) {
5780                         res = -EINVAL;
5781                         goto out;
5782                 }
5783
5784                 chan = ieee80211_get_channel(&dev->wiphy,
5785                                              survey.channel->center_freq);
5786                 if (!chan || chan->flags & IEEE80211_CHAN_DISABLED) {
5787                         survey_idx++;
5788                         continue;
5789                 }
5790
5791                 if (nl80211_send_survey(skb,
5792                                 NETLINK_CB(cb->skb).portid,
5793                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
5794                                 netdev,
5795                                 &survey) < 0)
5796                         goto out;
5797                 survey_idx++;
5798         }
5799
5800  out:
5801         cb->args[1] = survey_idx;
5802         res = skb->len;
5803  out_err:
5804         nl80211_finish_netdev_dump(dev);
5805         return res;
5806 }
5807
5808 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
5809 {
5810         return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
5811                                   NL80211_WPA_VERSION_2));
5812 }
5813
5814 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
5815 {
5816         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5817         struct net_device *dev = info->user_ptr[1];
5818         struct ieee80211_channel *chan;
5819         const u8 *bssid, *ssid, *ie = NULL, *sae_data = NULL;
5820         int err, ssid_len, ie_len = 0, sae_data_len = 0;
5821         enum nl80211_auth_type auth_type;
5822         struct key_parse key;
5823         bool local_state_change;
5824
5825         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
5826                 return -EINVAL;
5827
5828         if (!info->attrs[NL80211_ATTR_MAC])
5829                 return -EINVAL;
5830
5831         if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
5832                 return -EINVAL;
5833
5834         if (!info->attrs[NL80211_ATTR_SSID])
5835                 return -EINVAL;
5836
5837         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
5838                 return -EINVAL;
5839
5840         err = nl80211_parse_key(info, &key);
5841         if (err)
5842                 return err;
5843
5844         if (key.idx >= 0) {
5845                 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
5846                         return -EINVAL;
5847                 if (!key.p.key || !key.p.key_len)
5848                         return -EINVAL;
5849                 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
5850                      key.p.key_len != WLAN_KEY_LEN_WEP40) &&
5851                     (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
5852                      key.p.key_len != WLAN_KEY_LEN_WEP104))
5853                         return -EINVAL;
5854                 if (key.idx > 4)
5855                         return -EINVAL;
5856         } else {
5857                 key.p.key_len = 0;
5858                 key.p.key = NULL;
5859         }
5860
5861         if (key.idx >= 0) {
5862                 int i;
5863                 bool ok = false;
5864                 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
5865                         if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
5866                                 ok = true;
5867                                 break;
5868                         }
5869                 }
5870                 if (!ok)
5871                         return -EINVAL;
5872         }
5873
5874         if (!rdev->ops->auth)
5875                 return -EOPNOTSUPP;
5876
5877         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
5878             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
5879                 return -EOPNOTSUPP;
5880
5881         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
5882         chan = ieee80211_get_channel(&rdev->wiphy,
5883                 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
5884         if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED))
5885                 return -EINVAL;
5886
5887         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
5888         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
5889
5890         if (info->attrs[NL80211_ATTR_IE]) {
5891                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
5892                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5893         }
5894
5895         auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
5896         if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE))
5897                 return -EINVAL;
5898
5899         if (auth_type == NL80211_AUTHTYPE_SAE &&
5900             !info->attrs[NL80211_ATTR_SAE_DATA])
5901                 return -EINVAL;
5902
5903         if (info->attrs[NL80211_ATTR_SAE_DATA]) {
5904                 if (auth_type != NL80211_AUTHTYPE_SAE)
5905                         return -EINVAL;
5906                 sae_data = nla_data(info->attrs[NL80211_ATTR_SAE_DATA]);
5907                 sae_data_len = nla_len(info->attrs[NL80211_ATTR_SAE_DATA]);
5908                 /* need to include at least Auth Transaction and Status Code */
5909                 if (sae_data_len < 4)
5910                         return -EINVAL;
5911         }
5912
5913         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
5914
5915         /*
5916          * Since we no longer track auth state, ignore
5917          * requests to only change local state.
5918          */
5919         if (local_state_change)
5920                 return 0;
5921
5922         return cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
5923                                   ssid, ssid_len, ie, ie_len,
5924                                   key.p.key, key.p.key_len, key.idx,
5925                                   sae_data, sae_data_len);
5926 }
5927
5928 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
5929                                    struct genl_info *info,
5930                                    struct cfg80211_crypto_settings *settings,
5931                                    int cipher_limit)
5932 {
5933         memset(settings, 0, sizeof(*settings));
5934
5935         settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
5936
5937         if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
5938                 u16 proto;
5939                 proto = nla_get_u16(
5940                         info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
5941                 settings->control_port_ethertype = cpu_to_be16(proto);
5942                 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
5943                     proto != ETH_P_PAE)
5944                         return -EINVAL;
5945                 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
5946                         settings->control_port_no_encrypt = true;
5947         } else
5948                 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
5949
5950         if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
5951                 void *data;
5952                 int len, i;
5953
5954                 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
5955                 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
5956                 settings->n_ciphers_pairwise = len / sizeof(u32);
5957
5958                 if (len % sizeof(u32))
5959                         return -EINVAL;
5960
5961                 if (settings->n_ciphers_pairwise > cipher_limit)
5962                         return -EINVAL;
5963
5964                 memcpy(settings->ciphers_pairwise, data, len);
5965
5966                 for (i = 0; i < settings->n_ciphers_pairwise; i++)
5967                         if (!cfg80211_supported_cipher_suite(
5968                                         &rdev->wiphy,
5969                                         settings->ciphers_pairwise[i]))
5970                                 return -EINVAL;
5971         }
5972
5973         if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
5974                 settings->cipher_group =
5975                         nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
5976                 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
5977                                                      settings->cipher_group))
5978                         return -EINVAL;
5979         }
5980
5981         if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
5982                 settings->wpa_versions =
5983                         nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
5984                 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
5985                         return -EINVAL;
5986         }
5987
5988         if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
5989                 void *data;
5990                 int len;
5991
5992                 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
5993                 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
5994                 settings->n_akm_suites = len / sizeof(u32);
5995
5996                 if (len % sizeof(u32))
5997                         return -EINVAL;
5998
5999                 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES)
6000                         return -EINVAL;
6001
6002                 memcpy(settings->akm_suites, data, len);
6003         }
6004
6005         return 0;
6006 }
6007
6008 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
6009 {
6010         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6011         struct net_device *dev = info->user_ptr[1];
6012         struct ieee80211_channel *chan;
6013         struct cfg80211_assoc_request req = {};
6014         const u8 *bssid, *ssid;
6015         int err, ssid_len = 0;
6016
6017         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6018                 return -EINVAL;
6019
6020         if (!info->attrs[NL80211_ATTR_MAC] ||
6021             !info->attrs[NL80211_ATTR_SSID] ||
6022             !info->attrs[NL80211_ATTR_WIPHY_FREQ])
6023                 return -EINVAL;
6024
6025         if (!rdev->ops->assoc)
6026                 return -EOPNOTSUPP;
6027
6028         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6029             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6030                 return -EOPNOTSUPP;
6031
6032         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6033
6034         chan = ieee80211_get_channel(&rdev->wiphy,
6035                 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
6036         if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED))
6037                 return -EINVAL;
6038
6039         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
6040         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
6041
6042         if (info->attrs[NL80211_ATTR_IE]) {
6043                 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6044                 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6045         }
6046
6047         if (info->attrs[NL80211_ATTR_USE_MFP]) {
6048                 enum nl80211_mfp mfp =
6049                         nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
6050                 if (mfp == NL80211_MFP_REQUIRED)
6051                         req.use_mfp = true;
6052                 else if (mfp != NL80211_MFP_NO)
6053                         return -EINVAL;
6054         }
6055
6056         if (info->attrs[NL80211_ATTR_PREV_BSSID])
6057                 req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
6058
6059         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
6060                 req.flags |= ASSOC_REQ_DISABLE_HT;
6061
6062         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
6063                 memcpy(&req.ht_capa_mask,
6064                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
6065                        sizeof(req.ht_capa_mask));
6066
6067         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
6068                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
6069                         return -EINVAL;
6070                 memcpy(&req.ht_capa,
6071                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
6072                        sizeof(req.ht_capa));
6073         }
6074
6075         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
6076                 req.flags |= ASSOC_REQ_DISABLE_VHT;
6077
6078         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
6079                 memcpy(&req.vht_capa_mask,
6080                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
6081                        sizeof(req.vht_capa_mask));
6082
6083         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
6084                 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
6085                         return -EINVAL;
6086                 memcpy(&req.vht_capa,
6087                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
6088                        sizeof(req.vht_capa));
6089         }
6090
6091         err = nl80211_crypto_settings(rdev, info, &req.crypto, 1);
6092         if (!err)
6093                 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid,
6094                                           ssid, ssid_len, &req);
6095
6096         return err;
6097 }
6098
6099 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
6100 {
6101         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6102         struct net_device *dev = info->user_ptr[1];
6103         const u8 *ie = NULL, *bssid;
6104         int ie_len = 0;
6105         u16 reason_code;
6106         bool local_state_change;
6107
6108         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6109                 return -EINVAL;
6110
6111         if (!info->attrs[NL80211_ATTR_MAC])
6112                 return -EINVAL;
6113
6114         if (!info->attrs[NL80211_ATTR_REASON_CODE])
6115                 return -EINVAL;
6116
6117         if (!rdev->ops->deauth)
6118                 return -EOPNOTSUPP;
6119
6120         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6121             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6122                 return -EOPNOTSUPP;
6123
6124         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6125
6126         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
6127         if (reason_code == 0) {
6128                 /* Reason Code 0 is reserved */
6129                 return -EINVAL;
6130         }
6131
6132         if (info->attrs[NL80211_ATTR_IE]) {
6133                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6134                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6135         }
6136
6137         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
6138
6139         return cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
6140                                     local_state_change);
6141 }
6142
6143 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
6144 {
6145         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6146         struct net_device *dev = info->user_ptr[1];
6147         const u8 *ie = NULL, *bssid;
6148         int ie_len = 0;
6149         u16 reason_code;
6150         bool local_state_change;
6151
6152         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6153                 return -EINVAL;
6154
6155         if (!info->attrs[NL80211_ATTR_MAC])
6156                 return -EINVAL;
6157
6158         if (!info->attrs[NL80211_ATTR_REASON_CODE])
6159                 return -EINVAL;
6160
6161         if (!rdev->ops->disassoc)
6162                 return -EOPNOTSUPP;
6163
6164         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6165             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6166                 return -EOPNOTSUPP;
6167
6168         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6169
6170         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
6171         if (reason_code == 0) {
6172                 /* Reason Code 0 is reserved */
6173                 return -EINVAL;
6174         }
6175
6176         if (info->attrs[NL80211_ATTR_IE]) {
6177                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6178                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6179         }
6180
6181         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
6182
6183         return cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
6184                                       local_state_change);
6185 }
6186
6187 static bool
6188 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
6189                          int mcast_rate[IEEE80211_NUM_BANDS],
6190                          int rateval)
6191 {
6192         struct wiphy *wiphy = &rdev->wiphy;
6193         bool found = false;
6194         int band, i;
6195
6196         for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
6197                 struct ieee80211_supported_band *sband;
6198
6199                 sband = wiphy->bands[band];
6200                 if (!sband)
6201                         continue;
6202
6203                 for (i = 0; i < sband->n_bitrates; i++) {
6204                         if (sband->bitrates[i].bitrate == rateval) {
6205                                 mcast_rate[band] = i + 1;
6206                                 found = true;
6207                                 break;
6208                         }
6209                 }
6210         }
6211
6212         return found;
6213 }
6214
6215 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
6216 {
6217         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6218         struct net_device *dev = info->user_ptr[1];
6219         struct cfg80211_ibss_params ibss;
6220         struct wiphy *wiphy;
6221         struct cfg80211_cached_keys *connkeys = NULL;
6222         int err;
6223
6224         memset(&ibss, 0, sizeof(ibss));
6225
6226         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6227                 return -EINVAL;
6228
6229         if (!info->attrs[NL80211_ATTR_SSID] ||
6230             !nla_len(info->attrs[NL80211_ATTR_SSID]))
6231                 return -EINVAL;
6232
6233         ibss.beacon_interval = 100;
6234
6235         if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
6236                 ibss.beacon_interval =
6237                         nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
6238                 if (ibss.beacon_interval < 1 || ibss.beacon_interval > 10000)
6239                         return -EINVAL;
6240         }
6241
6242         if (!rdev->ops->join_ibss)
6243                 return -EOPNOTSUPP;
6244
6245         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
6246                 return -EOPNOTSUPP;
6247
6248         wiphy = &rdev->wiphy;
6249
6250         if (info->attrs[NL80211_ATTR_MAC]) {
6251                 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6252
6253                 if (!is_valid_ether_addr(ibss.bssid))
6254                         return -EINVAL;
6255         }
6256         ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
6257         ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
6258
6259         if (info->attrs[NL80211_ATTR_IE]) {
6260                 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6261                 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6262         }
6263
6264         err = nl80211_parse_chandef(rdev, info, &ibss.chandef);
6265         if (err)
6266                 return err;
6267
6268         if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef))
6269                 return -EINVAL;
6270
6271         if (ibss.chandef.width > NL80211_CHAN_WIDTH_40)
6272                 return -EINVAL;
6273         if (ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT &&
6274             !(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
6275                 return -EINVAL;
6276
6277         ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
6278         ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
6279
6280         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
6281                 u8 *rates =
6282                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
6283                 int n_rates =
6284                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
6285                 struct ieee80211_supported_band *sband =
6286                         wiphy->bands[ibss.chandef.chan->band];
6287
6288                 err = ieee80211_get_ratemask(sband, rates, n_rates,
6289                                              &ibss.basic_rates);
6290                 if (err)
6291                         return err;
6292         }
6293
6294         if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
6295             !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
6296                         nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
6297                 return -EINVAL;
6298
6299         if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
6300                 bool no_ht = false;
6301
6302                 connkeys = nl80211_parse_connkeys(rdev,
6303                                           info->attrs[NL80211_ATTR_KEYS],
6304                                           &no_ht);
6305                 if (IS_ERR(connkeys))
6306                         return PTR_ERR(connkeys);
6307
6308                 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) &&
6309                     no_ht) {
6310                         kfree(connkeys);
6311                         return -EINVAL;
6312                 }
6313         }
6314
6315         ibss.control_port =
6316                 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]);
6317
6318         err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
6319         if (err)
6320                 kfree(connkeys);
6321         return err;
6322 }
6323
6324 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
6325 {
6326         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6327         struct net_device *dev = info->user_ptr[1];
6328
6329         if (!rdev->ops->leave_ibss)
6330                 return -EOPNOTSUPP;
6331
6332         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
6333                 return -EOPNOTSUPP;
6334
6335         return cfg80211_leave_ibss(rdev, dev, false);
6336 }
6337
6338 static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info)
6339 {
6340         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6341         struct net_device *dev = info->user_ptr[1];
6342         int mcast_rate[IEEE80211_NUM_BANDS];
6343         u32 nla_rate;
6344         int err;
6345
6346         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
6347             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6348                 return -EOPNOTSUPP;
6349
6350         if (!rdev->ops->set_mcast_rate)
6351                 return -EOPNOTSUPP;
6352
6353         memset(mcast_rate, 0, sizeof(mcast_rate));
6354
6355         if (!info->attrs[NL80211_ATTR_MCAST_RATE])
6356                 return -EINVAL;
6357
6358         nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]);
6359         if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate))
6360                 return -EINVAL;
6361
6362         err = rdev->ops->set_mcast_rate(&rdev->wiphy, dev, mcast_rate);
6363
6364         return err;
6365 }
6366
6367
6368 #ifdef CONFIG_NL80211_TESTMODE
6369 static struct genl_multicast_group nl80211_testmode_mcgrp = {
6370         .name = "testmode",
6371 };
6372
6373 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
6374 {
6375         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6376         int err;
6377
6378         if (!info->attrs[NL80211_ATTR_TESTDATA])
6379                 return -EINVAL;
6380
6381         err = -EOPNOTSUPP;
6382         if (rdev->ops->testmode_cmd) {
6383                 rdev->testmode_info = info;
6384                 err = rdev_testmode_cmd(rdev,
6385                                 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
6386                                 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
6387                 rdev->testmode_info = NULL;
6388         }
6389
6390         return err;
6391 }
6392
6393 static int nl80211_testmode_dump(struct sk_buff *skb,
6394                                  struct netlink_callback *cb)
6395 {
6396         struct cfg80211_registered_device *rdev;
6397         int err;
6398         long phy_idx;
6399         void *data = NULL;
6400         int data_len = 0;
6401
6402         if (cb->args[0]) {
6403                 /*
6404                  * 0 is a valid index, but not valid for args[0],
6405                  * so we need to offset by 1.
6406                  */
6407                 phy_idx = cb->args[0] - 1;
6408         } else {
6409                 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
6410                                   nl80211_fam.attrbuf, nl80211_fam.maxattr,
6411                                   nl80211_policy);
6412                 if (err)
6413                         return err;
6414
6415                 mutex_lock(&cfg80211_mutex);
6416                 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk),
6417                                                   nl80211_fam.attrbuf);
6418                 if (IS_ERR(rdev)) {
6419                         mutex_unlock(&cfg80211_mutex);
6420                         return PTR_ERR(rdev);
6421                 }
6422                 phy_idx = rdev->wiphy_idx;
6423                 rdev = NULL;
6424                 mutex_unlock(&cfg80211_mutex);
6425
6426                 if (nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA])
6427                         cb->args[1] =
6428                                 (long)nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA];
6429         }
6430
6431         if (cb->args[1]) {
6432                 data = nla_data((void *)cb->args[1]);
6433                 data_len = nla_len((void *)cb->args[1]);
6434         }
6435
6436         mutex_lock(&cfg80211_mutex);
6437         rdev = cfg80211_rdev_by_wiphy_idx(phy_idx);
6438         if (!rdev) {
6439                 mutex_unlock(&cfg80211_mutex);
6440                 return -ENOENT;
6441         }
6442         cfg80211_lock_rdev(rdev);
6443         mutex_unlock(&cfg80211_mutex);
6444
6445         if (!rdev->ops->testmode_dump) {
6446                 err = -EOPNOTSUPP;
6447                 goto out_err;
6448         }
6449
6450         while (1) {
6451                 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
6452                                            cb->nlh->nlmsg_seq, NLM_F_MULTI,
6453                                            NL80211_CMD_TESTMODE);
6454                 struct nlattr *tmdata;
6455
6456                 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) {
6457                         genlmsg_cancel(skb, hdr);
6458                         break;
6459                 }
6460
6461                 tmdata = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
6462                 if (!tmdata) {
6463                         genlmsg_cancel(skb, hdr);
6464                         break;
6465                 }
6466                 err = rdev_testmode_dump(rdev, skb, cb, data, data_len);
6467                 nla_nest_end(skb, tmdata);
6468
6469                 if (err == -ENOBUFS || err == -ENOENT) {
6470                         genlmsg_cancel(skb, hdr);
6471                         break;
6472                 } else if (err) {
6473                         genlmsg_cancel(skb, hdr);
6474                         goto out_err;
6475                 }
6476
6477                 genlmsg_end(skb, hdr);
6478         }
6479
6480         err = skb->len;
6481         /* see above */
6482         cb->args[0] = phy_idx + 1;
6483  out_err:
6484         cfg80211_unlock_rdev(rdev);
6485         return err;
6486 }
6487
6488 static struct sk_buff *
6489 __cfg80211_testmode_alloc_skb(struct cfg80211_registered_device *rdev,
6490                               int approxlen, u32 portid, u32 seq, gfp_t gfp)
6491 {
6492         struct sk_buff *skb;
6493         void *hdr;
6494         struct nlattr *data;
6495
6496         skb = nlmsg_new(approxlen + 100, gfp);
6497         if (!skb)
6498                 return NULL;
6499
6500         hdr = nl80211hdr_put(skb, portid, seq, 0, NL80211_CMD_TESTMODE);
6501         if (!hdr) {
6502                 kfree_skb(skb);
6503                 return NULL;
6504         }
6505
6506         if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
6507                 goto nla_put_failure;
6508         data = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
6509
6510         ((void **)skb->cb)[0] = rdev;
6511         ((void **)skb->cb)[1] = hdr;
6512         ((void **)skb->cb)[2] = data;
6513
6514         return skb;
6515
6516  nla_put_failure:
6517         kfree_skb(skb);
6518         return NULL;
6519 }
6520
6521 struct sk_buff *cfg80211_testmode_alloc_reply_skb(struct wiphy *wiphy,
6522                                                   int approxlen)
6523 {
6524         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
6525
6526         if (WARN_ON(!rdev->testmode_info))
6527                 return NULL;
6528
6529         return __cfg80211_testmode_alloc_skb(rdev, approxlen,
6530                                 rdev->testmode_info->snd_portid,
6531                                 rdev->testmode_info->snd_seq,
6532                                 GFP_KERNEL);
6533 }
6534 EXPORT_SYMBOL(cfg80211_testmode_alloc_reply_skb);
6535
6536 int cfg80211_testmode_reply(struct sk_buff *skb)
6537 {
6538         struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
6539         void *hdr = ((void **)skb->cb)[1];
6540         struct nlattr *data = ((void **)skb->cb)[2];
6541
6542         if (WARN_ON(!rdev->testmode_info)) {
6543                 kfree_skb(skb);
6544                 return -EINVAL;
6545         }
6546
6547         nla_nest_end(skb, data);
6548         genlmsg_end(skb, hdr);
6549         return genlmsg_reply(skb, rdev->testmode_info);
6550 }
6551 EXPORT_SYMBOL(cfg80211_testmode_reply);
6552
6553 struct sk_buff *cfg80211_testmode_alloc_event_skb(struct wiphy *wiphy,
6554                                                   int approxlen, gfp_t gfp)
6555 {
6556         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
6557
6558         return __cfg80211_testmode_alloc_skb(rdev, approxlen, 0, 0, gfp);
6559 }
6560 EXPORT_SYMBOL(cfg80211_testmode_alloc_event_skb);
6561
6562 void cfg80211_testmode_event(struct sk_buff *skb, gfp_t gfp)
6563 {
6564         void *hdr = ((void **)skb->cb)[1];
6565         struct nlattr *data = ((void **)skb->cb)[2];
6566
6567         nla_nest_end(skb, data);
6568         genlmsg_end(skb, hdr);
6569         genlmsg_multicast(skb, 0, nl80211_testmode_mcgrp.id, gfp);
6570 }
6571 EXPORT_SYMBOL(cfg80211_testmode_event);
6572 #endif
6573
6574 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
6575 {
6576         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6577         struct net_device *dev = info->user_ptr[1];
6578         struct cfg80211_connect_params connect;
6579         struct wiphy *wiphy;
6580         struct cfg80211_cached_keys *connkeys = NULL;
6581         int err;
6582
6583         memset(&connect, 0, sizeof(connect));
6584
6585         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6586                 return -EINVAL;
6587
6588         if (!info->attrs[NL80211_ATTR_SSID] ||
6589             !nla_len(info->attrs[NL80211_ATTR_SSID]))
6590                 return -EINVAL;
6591
6592         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
6593                 connect.auth_type =
6594                         nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
6595                 if (!nl80211_valid_auth_type(rdev, connect.auth_type,
6596                                              NL80211_CMD_CONNECT))
6597                         return -EINVAL;
6598         } else
6599                 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
6600
6601         connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
6602
6603         err = nl80211_crypto_settings(rdev, info, &connect.crypto,
6604                                       NL80211_MAX_NR_CIPHER_SUITES);
6605         if (err)
6606                 return err;
6607
6608         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6609             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6610                 return -EOPNOTSUPP;
6611
6612         wiphy = &rdev->wiphy;
6613
6614         connect.bg_scan_period = -1;
6615         if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] &&
6616                 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) {
6617                 connect.bg_scan_period =
6618                         nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]);
6619         }
6620
6621         if (info->attrs[NL80211_ATTR_MAC])
6622                 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6623         connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
6624         connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
6625
6626         if (info->attrs[NL80211_ATTR_IE]) {
6627                 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6628                 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6629         }
6630
6631         if (info->attrs[NL80211_ATTR_USE_MFP]) {
6632                 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
6633                 if (connect.mfp != NL80211_MFP_REQUIRED &&
6634                     connect.mfp != NL80211_MFP_NO)
6635                         return -EINVAL;
6636         } else {
6637                 connect.mfp = NL80211_MFP_NO;
6638         }
6639
6640         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
6641                 connect.channel =
6642                         ieee80211_get_channel(wiphy,
6643                             nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
6644                 if (!connect.channel ||
6645                     connect.channel->flags & IEEE80211_CHAN_DISABLED)
6646                         return -EINVAL;
6647         }
6648
6649         if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
6650                 connkeys = nl80211_parse_connkeys(rdev,
6651                                           info->attrs[NL80211_ATTR_KEYS], NULL);
6652                 if (IS_ERR(connkeys))
6653                         return PTR_ERR(connkeys);
6654         }
6655
6656         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
6657                 connect.flags |= ASSOC_REQ_DISABLE_HT;
6658
6659         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
6660                 memcpy(&connect.ht_capa_mask,
6661                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
6662                        sizeof(connect.ht_capa_mask));
6663
6664         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
6665                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) {
6666                         kfree(connkeys);
6667                         return -EINVAL;
6668                 }
6669                 memcpy(&connect.ht_capa,
6670                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
6671                        sizeof(connect.ht_capa));
6672         }
6673
6674         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
6675                 connect.flags |= ASSOC_REQ_DISABLE_VHT;
6676
6677         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
6678                 memcpy(&connect.vht_capa_mask,
6679                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
6680                        sizeof(connect.vht_capa_mask));
6681
6682         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
6683                 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) {
6684                         kfree(connkeys);
6685                         return -EINVAL;
6686                 }
6687                 memcpy(&connect.vht_capa,
6688                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
6689                        sizeof(connect.vht_capa));
6690         }
6691
6692         err = cfg80211_connect(rdev, dev, &connect, connkeys);
6693         if (err)
6694                 kfree(connkeys);
6695         return err;
6696 }
6697
6698 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
6699 {
6700         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6701         struct net_device *dev = info->user_ptr[1];
6702         u16 reason;
6703
6704         if (!info->attrs[NL80211_ATTR_REASON_CODE])
6705                 reason = WLAN_REASON_DEAUTH_LEAVING;
6706         else
6707                 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
6708
6709         if (reason == 0)
6710                 return -EINVAL;
6711
6712         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6713             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6714                 return -EOPNOTSUPP;
6715
6716         return cfg80211_disconnect(rdev, dev, reason, true);
6717 }
6718
6719 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
6720 {
6721         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6722         struct net *net;
6723         int err;
6724         u32 pid;
6725
6726         if (!info->attrs[NL80211_ATTR_PID])
6727                 return -EINVAL;
6728
6729         pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
6730
6731         net = get_net_ns_by_pid(pid);
6732         if (IS_ERR(net))
6733                 return PTR_ERR(net);
6734
6735         err = 0;
6736
6737         /* check if anything to do */
6738         if (!net_eq(wiphy_net(&rdev->wiphy), net))
6739                 err = cfg80211_switch_netns(rdev, net);
6740
6741         put_net(net);
6742         return err;
6743 }
6744
6745 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
6746 {
6747         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6748         int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
6749                         struct cfg80211_pmksa *pmksa) = NULL;
6750         struct net_device *dev = info->user_ptr[1];
6751         struct cfg80211_pmksa pmksa;
6752
6753         memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
6754
6755         if (!info->attrs[NL80211_ATTR_MAC])
6756                 return -EINVAL;
6757
6758         if (!info->attrs[NL80211_ATTR_PMKID])
6759                 return -EINVAL;
6760
6761         pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
6762         pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6763
6764         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6765             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6766                 return -EOPNOTSUPP;
6767
6768         switch (info->genlhdr->cmd) {
6769         case NL80211_CMD_SET_PMKSA:
6770                 rdev_ops = rdev->ops->set_pmksa;
6771                 break;
6772         case NL80211_CMD_DEL_PMKSA:
6773                 rdev_ops = rdev->ops->del_pmksa;
6774                 break;
6775         default:
6776                 WARN_ON(1);
6777                 break;
6778         }
6779
6780         if (!rdev_ops)
6781                 return -EOPNOTSUPP;
6782
6783         return rdev_ops(&rdev->wiphy, dev, &pmksa);
6784 }
6785
6786 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
6787 {
6788         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6789         struct net_device *dev = info->user_ptr[1];
6790
6791         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6792             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6793                 return -EOPNOTSUPP;
6794
6795         if (!rdev->ops->flush_pmksa)
6796                 return -EOPNOTSUPP;
6797
6798         return rdev_flush_pmksa(rdev, dev);
6799 }
6800
6801 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
6802 {
6803         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6804         struct net_device *dev = info->user_ptr[1];
6805         u8 action_code, dialog_token;
6806         u16 status_code;
6807         u8 *peer;
6808
6809         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
6810             !rdev->ops->tdls_mgmt)
6811                 return -EOPNOTSUPP;
6812
6813         if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
6814             !info->attrs[NL80211_ATTR_STATUS_CODE] ||
6815             !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
6816             !info->attrs[NL80211_ATTR_IE] ||
6817             !info->attrs[NL80211_ATTR_MAC])
6818                 return -EINVAL;
6819
6820         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
6821         action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
6822         status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
6823         dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
6824
6825         return rdev_tdls_mgmt(rdev, dev, peer, action_code,
6826                               dialog_token, status_code,
6827                               nla_data(info->attrs[NL80211_ATTR_IE]),
6828                               nla_len(info->attrs[NL80211_ATTR_IE]));
6829 }
6830
6831 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
6832 {
6833         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6834         struct net_device *dev = info->user_ptr[1];
6835         enum nl80211_tdls_operation operation;
6836         u8 *peer;
6837
6838         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
6839             !rdev->ops->tdls_oper)
6840                 return -EOPNOTSUPP;
6841
6842         if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
6843             !info->attrs[NL80211_ATTR_MAC])
6844                 return -EINVAL;
6845
6846         operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
6847         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
6848
6849         return rdev_tdls_oper(rdev, dev, peer, operation);
6850 }
6851
6852 static int nl80211_remain_on_channel(struct sk_buff *skb,
6853                                      struct genl_info *info)
6854 {
6855         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6856         struct wireless_dev *wdev = info->user_ptr[1];
6857         struct cfg80211_chan_def chandef;
6858         struct sk_buff *msg;
6859         void *hdr;
6860         u64 cookie;
6861         u32 duration;
6862         int err;
6863
6864         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
6865             !info->attrs[NL80211_ATTR_DURATION])
6866                 return -EINVAL;
6867
6868         duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
6869
6870         if (!rdev->ops->remain_on_channel ||
6871             !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL))
6872                 return -EOPNOTSUPP;
6873
6874         /*
6875          * We should be on that channel for at least a minimum amount of
6876          * time (10ms) but no longer than the driver supports.
6877          */
6878         if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
6879             duration > rdev->wiphy.max_remain_on_channel_duration)
6880                 return -EINVAL;
6881
6882         err = nl80211_parse_chandef(rdev, info, &chandef);
6883         if (err)
6884                 return err;
6885
6886         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6887         if (!msg)
6888                 return -ENOMEM;
6889
6890         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
6891                              NL80211_CMD_REMAIN_ON_CHANNEL);
6892
6893         if (IS_ERR(hdr)) {
6894                 err = PTR_ERR(hdr);
6895                 goto free_msg;
6896         }
6897
6898         err = rdev_remain_on_channel(rdev, wdev, chandef.chan,
6899                                      duration, &cookie);
6900
6901         if (err)
6902                 goto free_msg;
6903
6904         if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
6905                 goto nla_put_failure;
6906
6907         genlmsg_end(msg, hdr);
6908
6909         return genlmsg_reply(msg, info);
6910
6911  nla_put_failure:
6912         err = -ENOBUFS;
6913  free_msg:
6914         nlmsg_free(msg);
6915         return err;
6916 }
6917
6918 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
6919                                             struct genl_info *info)
6920 {
6921         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6922         struct wireless_dev *wdev = info->user_ptr[1];
6923         u64 cookie;
6924
6925         if (!info->attrs[NL80211_ATTR_COOKIE])
6926                 return -EINVAL;
6927
6928         if (!rdev->ops->cancel_remain_on_channel)
6929                 return -EOPNOTSUPP;
6930
6931         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
6932
6933         return rdev_cancel_remain_on_channel(rdev, wdev, cookie);
6934 }
6935
6936 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
6937                            u8 *rates, u8 rates_len)
6938 {
6939         u8 i;
6940         u32 mask = 0;
6941
6942         for (i = 0; i < rates_len; i++) {
6943                 int rate = (rates[i] & 0x7f) * 5;
6944                 int ridx;
6945                 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
6946                         struct ieee80211_rate *srate =
6947                                 &sband->bitrates[ridx];
6948                         if (rate == srate->bitrate) {
6949                                 mask |= 1 << ridx;
6950                                 break;
6951                         }
6952                 }
6953                 if (ridx == sband->n_bitrates)
6954                         return 0; /* rate not found */
6955         }
6956
6957         return mask;
6958 }
6959
6960 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband,
6961                                u8 *rates, u8 rates_len,
6962                                u8 mcs[IEEE80211_HT_MCS_MASK_LEN])
6963 {
6964         u8 i;
6965
6966         memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN);
6967
6968         for (i = 0; i < rates_len; i++) {
6969                 int ridx, rbit;
6970
6971                 ridx = rates[i] / 8;
6972                 rbit = BIT(rates[i] % 8);
6973
6974                 /* check validity */
6975                 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN))
6976                         return false;
6977
6978                 /* check availability */
6979                 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit)
6980                         mcs[ridx] |= rbit;
6981                 else
6982                         return false;
6983         }
6984
6985         return true;
6986 }
6987
6988 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
6989         [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
6990                                     .len = NL80211_MAX_SUPP_RATES },
6991         [NL80211_TXRATE_MCS] = { .type = NLA_BINARY,
6992                                  .len = NL80211_MAX_SUPP_HT_RATES },
6993 };
6994
6995 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
6996                                        struct genl_info *info)
6997 {
6998         struct nlattr *tb[NL80211_TXRATE_MAX + 1];
6999         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7000         struct cfg80211_bitrate_mask mask;
7001         int rem, i;
7002         struct net_device *dev = info->user_ptr[1];
7003         struct nlattr *tx_rates;
7004         struct ieee80211_supported_band *sband;
7005
7006         if (info->attrs[NL80211_ATTR_TX_RATES] == NULL)
7007                 return -EINVAL;
7008
7009         if (!rdev->ops->set_bitrate_mask)
7010                 return -EOPNOTSUPP;
7011
7012         memset(&mask, 0, sizeof(mask));
7013         /* Default to all rates enabled */
7014         for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
7015                 sband = rdev->wiphy.bands[i];
7016                 mask.control[i].legacy =
7017                         sband ? (1 << sband->n_bitrates) - 1 : 0;
7018                 if (sband)
7019                         memcpy(mask.control[i].mcs,
7020                                sband->ht_cap.mcs.rx_mask,
7021                                sizeof(mask.control[i].mcs));
7022                 else
7023                         memset(mask.control[i].mcs, 0,
7024                                sizeof(mask.control[i].mcs));
7025         }
7026
7027         /*
7028          * The nested attribute uses enum nl80211_band as the index. This maps
7029          * directly to the enum ieee80211_band values used in cfg80211.
7030          */
7031         BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8);
7032         nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem)
7033         {
7034                 enum ieee80211_band band = nla_type(tx_rates);
7035                 if (band < 0 || band >= IEEE80211_NUM_BANDS)
7036                         return -EINVAL;
7037                 sband = rdev->wiphy.bands[band];
7038                 if (sband == NULL)
7039                         return -EINVAL;
7040                 nla_parse(tb, NL80211_TXRATE_MAX, nla_data(tx_rates),
7041                           nla_len(tx_rates), nl80211_txattr_policy);
7042                 if (tb[NL80211_TXRATE_LEGACY]) {
7043                         mask.control[band].legacy = rateset_to_mask(
7044                                 sband,
7045                                 nla_data(tb[NL80211_TXRATE_LEGACY]),
7046                                 nla_len(tb[NL80211_TXRATE_LEGACY]));
7047                         if ((mask.control[band].legacy == 0) &&
7048                             nla_len(tb[NL80211_TXRATE_LEGACY]))
7049                                 return -EINVAL;
7050                 }
7051                 if (tb[NL80211_TXRATE_MCS]) {
7052                         if (!ht_rateset_to_mask(
7053                                         sband,
7054                                         nla_data(tb[NL80211_TXRATE_MCS]),
7055                                         nla_len(tb[NL80211_TXRATE_MCS]),
7056                                         mask.control[band].mcs))
7057                                 return -EINVAL;
7058                 }
7059
7060                 if (mask.control[band].legacy == 0) {
7061                         /* don't allow empty legacy rates if HT
7062                          * is not even supported. */
7063                         if (!rdev->wiphy.bands[band]->ht_cap.ht_supported)
7064                                 return -EINVAL;
7065
7066                         for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
7067                                 if (mask.control[band].mcs[i])
7068                                         break;
7069
7070                         /* legacy and mcs rates may not be both empty */
7071                         if (i == IEEE80211_HT_MCS_MASK_LEN)
7072                                 return -EINVAL;
7073                 }
7074         }
7075
7076         return rdev_set_bitrate_mask(rdev, dev, NULL, &mask);
7077 }
7078
7079 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
7080 {
7081         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7082         struct wireless_dev *wdev = info->user_ptr[1];
7083         u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
7084
7085         if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
7086                 return -EINVAL;
7087
7088         if (info->attrs[NL80211_ATTR_FRAME_TYPE])
7089                 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
7090
7091         switch (wdev->iftype) {
7092         case NL80211_IFTYPE_STATION:
7093         case NL80211_IFTYPE_ADHOC:
7094         case NL80211_IFTYPE_P2P_CLIENT:
7095         case NL80211_IFTYPE_AP:
7096         case NL80211_IFTYPE_AP_VLAN:
7097         case NL80211_IFTYPE_MESH_POINT:
7098         case NL80211_IFTYPE_P2P_GO:
7099         case NL80211_IFTYPE_P2P_DEVICE:
7100                 break;
7101         default:
7102                 return -EOPNOTSUPP;
7103         }
7104
7105         /* not much point in registering if we can't reply */
7106         if (!rdev->ops->mgmt_tx)
7107                 return -EOPNOTSUPP;
7108
7109         return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type,
7110                         nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
7111                         nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]));
7112 }
7113
7114 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
7115 {
7116         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7117         struct wireless_dev *wdev = info->user_ptr[1];
7118         struct cfg80211_chan_def chandef;
7119         int err;
7120         void *hdr = NULL;
7121         u64 cookie;
7122         struct sk_buff *msg = NULL;
7123         unsigned int wait = 0;
7124         bool offchan, no_cck, dont_wait_for_ack;
7125
7126         dont_wait_for_ack = info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK];
7127
7128         if (!info->attrs[NL80211_ATTR_FRAME])
7129                 return -EINVAL;
7130
7131         if (!rdev->ops->mgmt_tx)
7132                 return -EOPNOTSUPP;
7133
7134         switch (wdev->iftype) {
7135         case NL80211_IFTYPE_STATION:
7136         case NL80211_IFTYPE_ADHOC:
7137         case NL80211_IFTYPE_P2P_CLIENT:
7138         case NL80211_IFTYPE_AP:
7139         case NL80211_IFTYPE_AP_VLAN:
7140         case NL80211_IFTYPE_MESH_POINT:
7141         case NL80211_IFTYPE_P2P_GO:
7142         case NL80211_IFTYPE_P2P_DEVICE:
7143                 break;
7144         default:
7145                 return -EOPNOTSUPP;
7146         }
7147
7148         if (info->attrs[NL80211_ATTR_DURATION]) {
7149                 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
7150                         return -EINVAL;
7151                 wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
7152
7153                 /*
7154                  * We should wait on the channel for at least a minimum amount
7155                  * of time (10ms) but no longer than the driver supports.
7156                  */
7157                 if (wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
7158                     wait > rdev->wiphy.max_remain_on_channel_duration)
7159                         return -EINVAL;
7160
7161         }
7162
7163         offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
7164
7165         if (offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
7166                 return -EINVAL;
7167
7168         no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
7169
7170         err = nl80211_parse_chandef(rdev, info, &chandef);
7171         if (err)
7172                 return err;
7173
7174         if (!dont_wait_for_ack) {
7175                 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7176                 if (!msg)
7177                         return -ENOMEM;
7178
7179                 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7180                                      NL80211_CMD_FRAME);
7181
7182                 if (IS_ERR(hdr)) {
7183                         err = PTR_ERR(hdr);
7184                         goto free_msg;
7185                 }
7186         }
7187
7188         err = cfg80211_mlme_mgmt_tx(rdev, wdev, chandef.chan, offchan, wait,
7189                                     nla_data(info->attrs[NL80211_ATTR_FRAME]),
7190                                     nla_len(info->attrs[NL80211_ATTR_FRAME]),
7191                                     no_cck, dont_wait_for_ack, &cookie);
7192         if (err)
7193                 goto free_msg;
7194
7195         if (msg) {
7196                 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
7197                         goto nla_put_failure;
7198
7199                 genlmsg_end(msg, hdr);
7200                 return genlmsg_reply(msg, info);
7201         }
7202
7203         return 0;
7204
7205  nla_put_failure:
7206         err = -ENOBUFS;
7207  free_msg:
7208         nlmsg_free(msg);
7209         return err;
7210 }
7211
7212 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
7213 {
7214         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7215         struct wireless_dev *wdev = info->user_ptr[1];
7216         u64 cookie;
7217
7218         if (!info->attrs[NL80211_ATTR_COOKIE])
7219                 return -EINVAL;
7220
7221         if (!rdev->ops->mgmt_tx_cancel_wait)
7222                 return -EOPNOTSUPP;
7223
7224         switch (wdev->iftype) {
7225         case NL80211_IFTYPE_STATION:
7226         case NL80211_IFTYPE_ADHOC:
7227         case NL80211_IFTYPE_P2P_CLIENT:
7228         case NL80211_IFTYPE_AP:
7229         case NL80211_IFTYPE_AP_VLAN:
7230         case NL80211_IFTYPE_P2P_GO:
7231         case NL80211_IFTYPE_P2P_DEVICE:
7232                 break;
7233         default:
7234                 return -EOPNOTSUPP;
7235         }
7236
7237         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
7238
7239         return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie);
7240 }
7241
7242 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
7243 {
7244         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7245         struct wireless_dev *wdev;
7246         struct net_device *dev = info->user_ptr[1];
7247         u8 ps_state;
7248         bool state;
7249         int err;
7250
7251         if (!info->attrs[NL80211_ATTR_PS_STATE])
7252                 return -EINVAL;
7253
7254         ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
7255
7256         if (ps_state != NL80211_PS_DISABLED && ps_state != NL80211_PS_ENABLED)
7257                 return -EINVAL;
7258
7259         wdev = dev->ieee80211_ptr;
7260
7261         if (!rdev->ops->set_power_mgmt)
7262                 return -EOPNOTSUPP;
7263
7264         state = (ps_state == NL80211_PS_ENABLED) ? true : false;
7265
7266         if (state == wdev->ps)
7267                 return 0;
7268
7269         err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout);
7270         if (!err)
7271                 wdev->ps = state;
7272         return err;
7273 }
7274
7275 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
7276 {
7277         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7278         enum nl80211_ps_state ps_state;
7279         struct wireless_dev *wdev;
7280         struct net_device *dev = info->user_ptr[1];
7281         struct sk_buff *msg;
7282         void *hdr;
7283         int err;
7284
7285         wdev = dev->ieee80211_ptr;
7286
7287         if (!rdev->ops->set_power_mgmt)
7288                 return -EOPNOTSUPP;
7289
7290         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7291         if (!msg)
7292                 return -ENOMEM;
7293
7294         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7295                              NL80211_CMD_GET_POWER_SAVE);
7296         if (!hdr) {
7297                 err = -ENOBUFS;
7298                 goto free_msg;
7299         }
7300
7301         if (wdev->ps)
7302                 ps_state = NL80211_PS_ENABLED;
7303         else
7304                 ps_state = NL80211_PS_DISABLED;
7305
7306         if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state))
7307                 goto nla_put_failure;
7308
7309         genlmsg_end(msg, hdr);
7310         return genlmsg_reply(msg, info);
7311
7312  nla_put_failure:
7313         err = -ENOBUFS;
7314  free_msg:
7315         nlmsg_free(msg);
7316         return err;
7317 }
7318
7319 static struct nla_policy
7320 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] __read_mostly = {
7321         [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 },
7322         [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
7323         [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
7324         [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 },
7325         [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 },
7326         [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 },
7327 };
7328
7329 static int nl80211_set_cqm_txe(struct genl_info *info,
7330                                u32 rate, u32 pkts, u32 intvl)
7331 {
7332         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7333         struct wireless_dev *wdev;
7334         struct net_device *dev = info->user_ptr[1];
7335
7336         if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL)
7337                 return -EINVAL;
7338
7339         wdev = dev->ieee80211_ptr;
7340
7341         if (!rdev->ops->set_cqm_txe_config)
7342                 return -EOPNOTSUPP;
7343
7344         if (wdev->iftype != NL80211_IFTYPE_STATION &&
7345             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
7346                 return -EOPNOTSUPP;
7347
7348         return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl);
7349 }
7350
7351 static int nl80211_set_cqm_rssi(struct genl_info *info,
7352                                 s32 threshold, u32 hysteresis)
7353 {
7354         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7355         struct wireless_dev *wdev;
7356         struct net_device *dev = info->user_ptr[1];
7357
7358         if (threshold > 0)
7359                 return -EINVAL;
7360
7361         wdev = dev->ieee80211_ptr;
7362
7363         if (!rdev->ops->set_cqm_rssi_config)
7364                 return -EOPNOTSUPP;
7365
7366         if (wdev->iftype != NL80211_IFTYPE_STATION &&
7367             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
7368                 return -EOPNOTSUPP;
7369
7370         return rdev_set_cqm_rssi_config(rdev, dev, threshold, hysteresis);
7371 }
7372
7373 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
7374 {
7375         struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
7376         struct nlattr *cqm;
7377         int err;
7378
7379         cqm = info->attrs[NL80211_ATTR_CQM];
7380         if (!cqm) {
7381                 err = -EINVAL;
7382                 goto out;
7383         }
7384
7385         err = nla_parse_nested(attrs, NL80211_ATTR_CQM_MAX, cqm,
7386                                nl80211_attr_cqm_policy);
7387         if (err)
7388                 goto out;
7389
7390         if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
7391             attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
7392                 s32 threshold;
7393                 u32 hysteresis;
7394                 threshold = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
7395                 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
7396                 err = nl80211_set_cqm_rssi(info, threshold, hysteresis);
7397         } else if (attrs[NL80211_ATTR_CQM_TXE_RATE] &&
7398                    attrs[NL80211_ATTR_CQM_TXE_PKTS] &&
7399                    attrs[NL80211_ATTR_CQM_TXE_INTVL]) {
7400                 u32 rate, pkts, intvl;
7401                 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]);
7402                 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]);
7403                 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]);
7404                 err = nl80211_set_cqm_txe(info, rate, pkts, intvl);
7405         } else
7406                 err = -EINVAL;
7407
7408 out:
7409         return err;
7410 }
7411
7412 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
7413 {
7414         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7415         struct net_device *dev = info->user_ptr[1];
7416         struct mesh_config cfg;
7417         struct mesh_setup setup;
7418         int err;
7419
7420         /* start with default */
7421         memcpy(&cfg, &default_mesh_config, sizeof(cfg));
7422         memcpy(&setup, &default_mesh_setup, sizeof(setup));
7423
7424         if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
7425                 /* and parse parameters if given */
7426                 err = nl80211_parse_mesh_config(info, &cfg, NULL);
7427                 if (err)
7428                         return err;
7429         }
7430
7431         if (!info->attrs[NL80211_ATTR_MESH_ID] ||
7432             !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
7433                 return -EINVAL;
7434
7435         setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
7436         setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
7437
7438         if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
7439             !nl80211_parse_mcast_rate(rdev, setup.mcast_rate,
7440                             nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
7441                         return -EINVAL;
7442
7443         if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
7444                 setup.beacon_interval =
7445                         nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
7446                 if (setup.beacon_interval < 10 ||
7447                     setup.beacon_interval > 10000)
7448                         return -EINVAL;
7449         }
7450
7451         if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
7452                 setup.dtim_period =
7453                         nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
7454                 if (setup.dtim_period < 1 || setup.dtim_period > 100)
7455                         return -EINVAL;
7456         }
7457
7458         if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
7459                 /* parse additional setup parameters if given */
7460                 err = nl80211_parse_mesh_setup(info, &setup);
7461                 if (err)
7462                         return err;
7463         }
7464
7465         if (setup.user_mpm)
7466                 cfg.auto_open_plinks = false;
7467
7468         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
7469                 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
7470                 if (err)
7471                         return err;
7472         } else {
7473                 /* cfg80211_join_mesh() will sort it out */
7474                 setup.chandef.chan = NULL;
7475         }
7476
7477         return cfg80211_join_mesh(rdev, dev, &setup, &cfg);
7478 }
7479
7480 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
7481 {
7482         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7483         struct net_device *dev = info->user_ptr[1];
7484
7485         return cfg80211_leave_mesh(rdev, dev);
7486 }
7487
7488 #ifdef CONFIG_PM
7489 static int nl80211_send_wowlan_patterns(struct sk_buff *msg,
7490                                         struct cfg80211_registered_device *rdev)
7491 {
7492         struct nlattr *nl_pats, *nl_pat;
7493         int i, pat_len;
7494
7495         if (!rdev->wowlan->n_patterns)
7496                 return 0;
7497
7498         nl_pats = nla_nest_start(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN);
7499         if (!nl_pats)
7500                 return -ENOBUFS;
7501
7502         for (i = 0; i < rdev->wowlan->n_patterns; i++) {
7503                 nl_pat = nla_nest_start(msg, i + 1);
7504                 if (!nl_pat)
7505                         return -ENOBUFS;
7506                 pat_len = rdev->wowlan->patterns[i].pattern_len;
7507                 if (nla_put(msg, NL80211_WOWLAN_PKTPAT_MASK,
7508                             DIV_ROUND_UP(pat_len, 8),
7509                             rdev->wowlan->patterns[i].mask) ||
7510                     nla_put(msg, NL80211_WOWLAN_PKTPAT_PATTERN,
7511                             pat_len, rdev->wowlan->patterns[i].pattern) ||
7512                     nla_put_u32(msg, NL80211_WOWLAN_PKTPAT_OFFSET,
7513                                 rdev->wowlan->patterns[i].pkt_offset))
7514                         return -ENOBUFS;
7515                 nla_nest_end(msg, nl_pat);
7516         }
7517         nla_nest_end(msg, nl_pats);
7518
7519         return 0;
7520 }
7521
7522 static int nl80211_send_wowlan_tcp(struct sk_buff *msg,
7523                                    struct cfg80211_wowlan_tcp *tcp)
7524 {
7525         struct nlattr *nl_tcp;
7526
7527         if (!tcp)
7528                 return 0;
7529
7530         nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
7531         if (!nl_tcp)
7532                 return -ENOBUFS;
7533
7534         if (nla_put_be32(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) ||
7535             nla_put_be32(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) ||
7536             nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) ||
7537             nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) ||
7538             nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) ||
7539             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
7540                     tcp->payload_len, tcp->payload) ||
7541             nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
7542                         tcp->data_interval) ||
7543             nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
7544                     tcp->wake_len, tcp->wake_data) ||
7545             nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK,
7546                     DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask))
7547                 return -ENOBUFS;
7548
7549         if (tcp->payload_seq.len &&
7550             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ,
7551                     sizeof(tcp->payload_seq), &tcp->payload_seq))
7552                 return -ENOBUFS;
7553
7554         if (tcp->payload_tok.len &&
7555             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
7556                     sizeof(tcp->payload_tok) + tcp->tokens_size,
7557                     &tcp->payload_tok))
7558                 return -ENOBUFS;
7559
7560         return 0;
7561 }
7562
7563 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
7564 {
7565         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7566         struct sk_buff *msg;
7567         void *hdr;
7568         u32 size = NLMSG_DEFAULT_SIZE;
7569
7570         if (!rdev->wiphy.wowlan.flags && !rdev->wiphy.wowlan.n_patterns &&
7571             !rdev->wiphy.wowlan.tcp)
7572                 return -EOPNOTSUPP;
7573
7574         if (rdev->wowlan && rdev->wowlan->tcp) {
7575                 /* adjust size to have room for all the data */
7576                 size += rdev->wowlan->tcp->tokens_size +
7577                         rdev->wowlan->tcp->payload_len +
7578                         rdev->wowlan->tcp->wake_len +
7579                         rdev->wowlan->tcp->wake_len / 8;
7580         }
7581
7582         msg = nlmsg_new(size, GFP_KERNEL);
7583         if (!msg)
7584                 return -ENOMEM;
7585
7586         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7587                              NL80211_CMD_GET_WOWLAN);
7588         if (!hdr)
7589                 goto nla_put_failure;
7590
7591         if (rdev->wowlan) {
7592                 struct nlattr *nl_wowlan;
7593
7594                 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
7595                 if (!nl_wowlan)
7596                         goto nla_put_failure;
7597
7598                 if ((rdev->wowlan->any &&
7599                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
7600                     (rdev->wowlan->disconnect &&
7601                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
7602                     (rdev->wowlan->magic_pkt &&
7603                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
7604                     (rdev->wowlan->gtk_rekey_failure &&
7605                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
7606                     (rdev->wowlan->eap_identity_req &&
7607                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
7608                     (rdev->wowlan->four_way_handshake &&
7609                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
7610                     (rdev->wowlan->rfkill_release &&
7611                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
7612                         goto nla_put_failure;
7613
7614                 if (nl80211_send_wowlan_patterns(msg, rdev))
7615                         goto nla_put_failure;
7616
7617                 if (nl80211_send_wowlan_tcp(msg, rdev->wowlan->tcp))
7618                         goto nla_put_failure;
7619
7620                 nla_nest_end(msg, nl_wowlan);
7621         }
7622
7623         genlmsg_end(msg, hdr);
7624         return genlmsg_reply(msg, info);
7625
7626 nla_put_failure:
7627         nlmsg_free(msg);
7628         return -ENOBUFS;
7629 }
7630
7631 static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev,
7632                                     struct nlattr *attr,
7633                                     struct cfg80211_wowlan *trig)
7634 {
7635         struct nlattr *tb[NUM_NL80211_WOWLAN_TCP];
7636         struct cfg80211_wowlan_tcp *cfg;
7637         struct nl80211_wowlan_tcp_data_token *tok = NULL;
7638         struct nl80211_wowlan_tcp_data_seq *seq = NULL;
7639         u32 size;
7640         u32 data_size, wake_size, tokens_size = 0, wake_mask_size;
7641         int err, port;
7642
7643         if (!rdev->wiphy.wowlan.tcp)
7644                 return -EINVAL;
7645
7646         err = nla_parse(tb, MAX_NL80211_WOWLAN_TCP,
7647                         nla_data(attr), nla_len(attr),
7648                         nl80211_wowlan_tcp_policy);
7649         if (err)
7650                 return err;
7651
7652         if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] ||
7653             !tb[NL80211_WOWLAN_TCP_DST_IPV4] ||
7654             !tb[NL80211_WOWLAN_TCP_DST_MAC] ||
7655             !tb[NL80211_WOWLAN_TCP_DST_PORT] ||
7656             !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] ||
7657             !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] ||
7658             !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] ||
7659             !tb[NL80211_WOWLAN_TCP_WAKE_MASK])
7660                 return -EINVAL;
7661
7662         data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]);
7663         if (data_size > rdev->wiphy.wowlan.tcp->data_payload_max)
7664                 return -EINVAL;
7665
7666         if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) >
7667                         rdev->wiphy.wowlan.tcp->data_interval_max ||
7668             nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0)
7669                 return -EINVAL;
7670
7671         wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]);
7672         if (wake_size > rdev->wiphy.wowlan.tcp->wake_payload_max)
7673                 return -EINVAL;
7674
7675         wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]);
7676         if (wake_mask_size != DIV_ROUND_UP(wake_size, 8))
7677                 return -EINVAL;
7678
7679         if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) {
7680                 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
7681
7682                 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
7683                 tokens_size = tokln - sizeof(*tok);
7684
7685                 if (!tok->len || tokens_size % tok->len)
7686                         return -EINVAL;
7687                 if (!rdev->wiphy.wowlan.tcp->tok)
7688                         return -EINVAL;
7689                 if (tok->len > rdev->wiphy.wowlan.tcp->tok->max_len)
7690                         return -EINVAL;
7691                 if (tok->len < rdev->wiphy.wowlan.tcp->tok->min_len)
7692                         return -EINVAL;
7693                 if (tokens_size > rdev->wiphy.wowlan.tcp->tok->bufsize)
7694                         return -EINVAL;
7695                 if (tok->offset + tok->len > data_size)
7696                         return -EINVAL;
7697         }
7698
7699         if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) {
7700                 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]);
7701                 if (!rdev->wiphy.wowlan.tcp->seq)
7702                         return -EINVAL;
7703                 if (seq->len == 0 || seq->len > 4)
7704                         return -EINVAL;
7705                 if (seq->len + seq->offset > data_size)
7706                         return -EINVAL;
7707         }
7708
7709         size = sizeof(*cfg);
7710         size += data_size;
7711         size += wake_size + wake_mask_size;
7712         size += tokens_size;
7713
7714         cfg = kzalloc(size, GFP_KERNEL);
7715         if (!cfg)
7716                 return -ENOMEM;
7717         cfg->src = nla_get_be32(tb[NL80211_WOWLAN_TCP_SRC_IPV4]);
7718         cfg->dst = nla_get_be32(tb[NL80211_WOWLAN_TCP_DST_IPV4]);
7719         memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]),
7720                ETH_ALEN);
7721         if (tb[NL80211_WOWLAN_TCP_SRC_PORT])
7722                 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]);
7723         else
7724                 port = 0;
7725 #ifdef CONFIG_INET
7726         /* allocate a socket and port for it and use it */
7727         err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM,
7728                             IPPROTO_TCP, &cfg->sock, 1);
7729         if (err) {
7730                 kfree(cfg);
7731                 return err;
7732         }
7733         if (inet_csk_get_port(cfg->sock->sk, port)) {
7734                 sock_release(cfg->sock);
7735                 kfree(cfg);
7736                 return -EADDRINUSE;
7737         }
7738         cfg->src_port = inet_sk(cfg->sock->sk)->inet_num;
7739 #else
7740         if (!port) {
7741                 kfree(cfg);
7742                 return -EINVAL;
7743         }
7744         cfg->src_port = port;
7745 #endif
7746
7747         cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]);
7748         cfg->payload_len = data_size;
7749         cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size;
7750         memcpy((void *)cfg->payload,
7751                nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]),
7752                data_size);
7753         if (seq)
7754                 cfg->payload_seq = *seq;
7755         cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]);
7756         cfg->wake_len = wake_size;
7757         cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size;
7758         memcpy((void *)cfg->wake_data,
7759                nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]),
7760                wake_size);
7761         cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size +
7762                          data_size + wake_size;
7763         memcpy((void *)cfg->wake_mask,
7764                nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]),
7765                wake_mask_size);
7766         if (tok) {
7767                 cfg->tokens_size = tokens_size;
7768                 memcpy(&cfg->payload_tok, tok, sizeof(*tok) + tokens_size);
7769         }
7770
7771         trig->tcp = cfg;
7772
7773         return 0;
7774 }
7775
7776 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
7777 {
7778         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7779         struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
7780         struct cfg80211_wowlan new_triggers = {};
7781         struct cfg80211_wowlan *ntrig;
7782         struct wiphy_wowlan_support *wowlan = &rdev->wiphy.wowlan;
7783         int err, i;
7784         bool prev_enabled = rdev->wowlan;
7785
7786         if (!rdev->wiphy.wowlan.flags && !rdev->wiphy.wowlan.n_patterns &&
7787             !rdev->wiphy.wowlan.tcp)
7788                 return -EOPNOTSUPP;
7789
7790         if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) {
7791                 cfg80211_rdev_free_wowlan(rdev);
7792                 rdev->wowlan = NULL;
7793                 goto set_wakeup;
7794         }
7795
7796         err = nla_parse(tb, MAX_NL80211_WOWLAN_TRIG,
7797                         nla_data(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
7798                         nla_len(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
7799                         nl80211_wowlan_policy);
7800         if (err)
7801                 return err;
7802
7803         if (tb[NL80211_WOWLAN_TRIG_ANY]) {
7804                 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
7805                         return -EINVAL;
7806                 new_triggers.any = true;
7807         }
7808
7809         if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
7810                 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
7811                         return -EINVAL;
7812                 new_triggers.disconnect = true;
7813         }
7814
7815         if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
7816                 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
7817                         return -EINVAL;
7818                 new_triggers.magic_pkt = true;
7819         }
7820
7821         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
7822                 return -EINVAL;
7823
7824         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
7825                 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
7826                         return -EINVAL;
7827                 new_triggers.gtk_rekey_failure = true;
7828         }
7829
7830         if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
7831                 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
7832                         return -EINVAL;
7833                 new_triggers.eap_identity_req = true;
7834         }
7835
7836         if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
7837                 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
7838                         return -EINVAL;
7839                 new_triggers.four_way_handshake = true;
7840         }
7841
7842         if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
7843                 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
7844                         return -EINVAL;
7845                 new_triggers.rfkill_release = true;
7846         }
7847
7848         if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
7849                 struct nlattr *pat;
7850                 int n_patterns = 0;
7851                 int rem, pat_len, mask_len, pkt_offset;
7852                 struct nlattr *pat_tb[NUM_NL80211_WOWLAN_PKTPAT];
7853
7854                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
7855                                     rem)
7856                         n_patterns++;
7857                 if (n_patterns > wowlan->n_patterns)
7858                         return -EINVAL;
7859
7860                 new_triggers.patterns = kcalloc(n_patterns,
7861                                                 sizeof(new_triggers.patterns[0]),
7862                                                 GFP_KERNEL);
7863                 if (!new_triggers.patterns)
7864                         return -ENOMEM;
7865
7866                 new_triggers.n_patterns = n_patterns;
7867                 i = 0;
7868
7869                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
7870                                     rem) {
7871                         nla_parse(pat_tb, MAX_NL80211_WOWLAN_PKTPAT,
7872                                   nla_data(pat), nla_len(pat), NULL);
7873                         err = -EINVAL;
7874                         if (!pat_tb[NL80211_WOWLAN_PKTPAT_MASK] ||
7875                             !pat_tb[NL80211_WOWLAN_PKTPAT_PATTERN])
7876                                 goto error;
7877                         pat_len = nla_len(pat_tb[NL80211_WOWLAN_PKTPAT_PATTERN]);
7878                         mask_len = DIV_ROUND_UP(pat_len, 8);
7879                         if (nla_len(pat_tb[NL80211_WOWLAN_PKTPAT_MASK]) !=
7880                             mask_len)
7881                                 goto error;
7882                         if (pat_len > wowlan->pattern_max_len ||
7883                             pat_len < wowlan->pattern_min_len)
7884                                 goto error;
7885
7886                         if (!pat_tb[NL80211_WOWLAN_PKTPAT_OFFSET])
7887                                 pkt_offset = 0;
7888                         else
7889                                 pkt_offset = nla_get_u32(
7890                                         pat_tb[NL80211_WOWLAN_PKTPAT_OFFSET]);
7891                         if (pkt_offset > wowlan->max_pkt_offset)
7892                                 goto error;
7893                         new_triggers.patterns[i].pkt_offset = pkt_offset;
7894
7895                         new_triggers.patterns[i].mask =
7896                                 kmalloc(mask_len + pat_len, GFP_KERNEL);
7897                         if (!new_triggers.patterns[i].mask) {
7898                                 err = -ENOMEM;
7899                                 goto error;
7900                         }
7901                         new_triggers.patterns[i].pattern =
7902                                 new_triggers.patterns[i].mask + mask_len;
7903                         memcpy(new_triggers.patterns[i].mask,
7904                                nla_data(pat_tb[NL80211_WOWLAN_PKTPAT_MASK]),
7905                                mask_len);
7906                         new_triggers.patterns[i].pattern_len = pat_len;
7907                         memcpy(new_triggers.patterns[i].pattern,
7908                                nla_data(pat_tb[NL80211_WOWLAN_PKTPAT_PATTERN]),
7909                                pat_len);
7910                         i++;
7911                 }
7912         }
7913
7914         if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) {
7915                 err = nl80211_parse_wowlan_tcp(
7916                         rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION],
7917                         &new_triggers);
7918                 if (err)
7919                         goto error;
7920         }
7921
7922         ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL);
7923         if (!ntrig) {
7924                 err = -ENOMEM;
7925                 goto error;
7926         }
7927         cfg80211_rdev_free_wowlan(rdev);
7928         rdev->wowlan = ntrig;
7929
7930  set_wakeup:
7931         if (rdev->ops->set_wakeup && prev_enabled != !!rdev->wowlan)
7932                 rdev_set_wakeup(rdev, rdev->wowlan);
7933
7934         return 0;
7935  error:
7936         for (i = 0; i < new_triggers.n_patterns; i++)
7937                 kfree(new_triggers.patterns[i].mask);
7938         kfree(new_triggers.patterns);
7939         if (new_triggers.tcp && new_triggers.tcp->sock)
7940                 sock_release(new_triggers.tcp->sock);
7941         kfree(new_triggers.tcp);
7942         return err;
7943 }
7944 #endif
7945
7946 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
7947 {
7948         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7949         struct net_device *dev = info->user_ptr[1];
7950         struct wireless_dev *wdev = dev->ieee80211_ptr;
7951         struct nlattr *tb[NUM_NL80211_REKEY_DATA];
7952         struct cfg80211_gtk_rekey_data rekey_data;
7953         int err;
7954
7955         if (!info->attrs[NL80211_ATTR_REKEY_DATA])
7956                 return -EINVAL;
7957
7958         err = nla_parse(tb, MAX_NL80211_REKEY_DATA,
7959                         nla_data(info->attrs[NL80211_ATTR_REKEY_DATA]),
7960                         nla_len(info->attrs[NL80211_ATTR_REKEY_DATA]),
7961                         nl80211_rekey_policy);
7962         if (err)
7963                 return err;
7964
7965         if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN)
7966                 return -ERANGE;
7967         if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN)
7968                 return -ERANGE;
7969         if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN)
7970                 return -ERANGE;
7971
7972         memcpy(rekey_data.kek, nla_data(tb[NL80211_REKEY_DATA_KEK]),
7973                NL80211_KEK_LEN);
7974         memcpy(rekey_data.kck, nla_data(tb[NL80211_REKEY_DATA_KCK]),
7975                NL80211_KCK_LEN);
7976         memcpy(rekey_data.replay_ctr,
7977                nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]),
7978                NL80211_REPLAY_CTR_LEN);
7979
7980         wdev_lock(wdev);
7981         if (!wdev->current_bss) {
7982                 err = -ENOTCONN;
7983                 goto out;
7984         }
7985
7986         if (!rdev->ops->set_rekey_data) {
7987                 err = -EOPNOTSUPP;
7988                 goto out;
7989         }
7990
7991         err = rdev_set_rekey_data(rdev, dev, &rekey_data);
7992  out:
7993         wdev_unlock(wdev);
7994         return err;
7995 }
7996
7997 static int nl80211_register_unexpected_frame(struct sk_buff *skb,
7998                                              struct genl_info *info)
7999 {
8000         struct net_device *dev = info->user_ptr[1];
8001         struct wireless_dev *wdev = dev->ieee80211_ptr;
8002
8003         if (wdev->iftype != NL80211_IFTYPE_AP &&
8004             wdev->iftype != NL80211_IFTYPE_P2P_GO)
8005                 return -EINVAL;
8006
8007         if (wdev->ap_unexpected_nlportid)
8008                 return -EBUSY;
8009
8010         wdev->ap_unexpected_nlportid = info->snd_portid;
8011         return 0;
8012 }
8013
8014 static int nl80211_probe_client(struct sk_buff *skb,
8015                                 struct genl_info *info)
8016 {
8017         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8018         struct net_device *dev = info->user_ptr[1];
8019         struct wireless_dev *wdev = dev->ieee80211_ptr;
8020         struct sk_buff *msg;
8021         void *hdr;
8022         const u8 *addr;
8023         u64 cookie;
8024         int err;
8025
8026         if (wdev->iftype != NL80211_IFTYPE_AP &&
8027             wdev->iftype != NL80211_IFTYPE_P2P_GO)
8028                 return -EOPNOTSUPP;
8029
8030         if (!info->attrs[NL80211_ATTR_MAC])
8031                 return -EINVAL;
8032
8033         if (!rdev->ops->probe_client)
8034                 return -EOPNOTSUPP;
8035
8036         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8037         if (!msg)
8038                 return -ENOMEM;
8039
8040         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8041                              NL80211_CMD_PROBE_CLIENT);
8042
8043         if (IS_ERR(hdr)) {
8044                 err = PTR_ERR(hdr);
8045                 goto free_msg;
8046         }
8047
8048         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
8049
8050         err = rdev_probe_client(rdev, dev, addr, &cookie);
8051         if (err)
8052                 goto free_msg;
8053
8054         if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
8055                 goto nla_put_failure;
8056
8057         genlmsg_end(msg, hdr);
8058
8059         return genlmsg_reply(msg, info);
8060
8061  nla_put_failure:
8062         err = -ENOBUFS;
8063  free_msg:
8064         nlmsg_free(msg);
8065         return err;
8066 }
8067
8068 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
8069 {
8070         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8071         struct cfg80211_beacon_registration *reg, *nreg;
8072         int rv;
8073
8074         if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS))
8075                 return -EOPNOTSUPP;
8076
8077         nreg = kzalloc(sizeof(*nreg), GFP_KERNEL);
8078         if (!nreg)
8079                 return -ENOMEM;
8080
8081         /* First, check if already registered. */
8082         spin_lock_bh(&rdev->beacon_registrations_lock);
8083         list_for_each_entry(reg, &rdev->beacon_registrations, list) {
8084                 if (reg->nlportid == info->snd_portid) {
8085                         rv = -EALREADY;
8086                         goto out_err;
8087                 }
8088         }
8089         /* Add it to the list */
8090         nreg->nlportid = info->snd_portid;
8091         list_add(&nreg->list, &rdev->beacon_registrations);
8092
8093         spin_unlock_bh(&rdev->beacon_registrations_lock);
8094
8095         return 0;
8096 out_err:
8097         spin_unlock_bh(&rdev->beacon_registrations_lock);
8098         kfree(nreg);
8099         return rv;
8100 }
8101
8102 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info)
8103 {
8104         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8105         struct wireless_dev *wdev = info->user_ptr[1];
8106         int err;
8107
8108         if (!rdev->ops->start_p2p_device)
8109                 return -EOPNOTSUPP;
8110
8111         if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
8112                 return -EOPNOTSUPP;
8113
8114         if (wdev->p2p_started)
8115                 return 0;
8116
8117         mutex_lock(&rdev->devlist_mtx);
8118         err = cfg80211_can_add_interface(rdev, wdev->iftype);
8119         mutex_unlock(&rdev->devlist_mtx);
8120         if (err)
8121                 return err;
8122
8123         err = rdev_start_p2p_device(rdev, wdev);
8124         if (err)
8125                 return err;
8126
8127         wdev->p2p_started = true;
8128         mutex_lock(&rdev->devlist_mtx);
8129         rdev->opencount++;
8130         mutex_unlock(&rdev->devlist_mtx);
8131
8132         return 0;
8133 }
8134
8135 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info)
8136 {
8137         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8138         struct wireless_dev *wdev = info->user_ptr[1];
8139
8140         if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
8141                 return -EOPNOTSUPP;
8142
8143         if (!rdev->ops->stop_p2p_device)
8144                 return -EOPNOTSUPP;
8145
8146         mutex_lock(&rdev->sched_scan_mtx);
8147         cfg80211_stop_p2p_device(rdev, wdev);
8148         mutex_unlock(&rdev->sched_scan_mtx);
8149
8150         return 0;
8151 }
8152
8153 static int nl80211_get_protocol_features(struct sk_buff *skb,
8154                                          struct genl_info *info)
8155 {
8156         void *hdr;
8157         struct sk_buff *msg;
8158
8159         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8160         if (!msg)
8161                 return -ENOMEM;
8162
8163         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8164                              NL80211_CMD_GET_PROTOCOL_FEATURES);
8165         if (!hdr)
8166                 goto nla_put_failure;
8167
8168         if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES,
8169                         NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP))
8170                 goto nla_put_failure;
8171
8172         genlmsg_end(msg, hdr);
8173         return genlmsg_reply(msg, info);
8174
8175  nla_put_failure:
8176         kfree_skb(msg);
8177         return -ENOBUFS;
8178 }
8179
8180 static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info)
8181 {
8182         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8183         struct cfg80211_update_ft_ies_params ft_params;
8184         struct net_device *dev = info->user_ptr[1];
8185
8186         if (!rdev->ops->update_ft_ies)
8187                 return -EOPNOTSUPP;
8188
8189         if (!info->attrs[NL80211_ATTR_MDID] ||
8190             !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8191                 return -EINVAL;
8192
8193         memset(&ft_params, 0, sizeof(ft_params));
8194         ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]);
8195         ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8196         ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8197
8198         return rdev_update_ft_ies(rdev, dev, &ft_params);
8199 }
8200
8201 #define NL80211_FLAG_NEED_WIPHY         0x01
8202 #define NL80211_FLAG_NEED_NETDEV        0x02
8203 #define NL80211_FLAG_NEED_RTNL          0x04
8204 #define NL80211_FLAG_CHECK_NETDEV_UP    0x08
8205 #define NL80211_FLAG_NEED_NETDEV_UP     (NL80211_FLAG_NEED_NETDEV |\
8206                                          NL80211_FLAG_CHECK_NETDEV_UP)
8207 #define NL80211_FLAG_NEED_WDEV          0x10
8208 /* If a netdev is associated, it must be UP, P2P must be started */
8209 #define NL80211_FLAG_NEED_WDEV_UP       (NL80211_FLAG_NEED_WDEV |\
8210                                          NL80211_FLAG_CHECK_NETDEV_UP)
8211
8212 static int nl80211_pre_doit(struct genl_ops *ops, struct sk_buff *skb,
8213                             struct genl_info *info)
8214 {
8215         struct cfg80211_registered_device *rdev;
8216         struct wireless_dev *wdev;
8217         struct net_device *dev;
8218         bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
8219
8220         if (rtnl)
8221                 rtnl_lock();
8222
8223         if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
8224                 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
8225                 if (IS_ERR(rdev)) {
8226                         if (rtnl)
8227                                 rtnl_unlock();
8228                         return PTR_ERR(rdev);
8229                 }
8230                 info->user_ptr[0] = rdev;
8231         } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV ||
8232                    ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
8233                 mutex_lock(&cfg80211_mutex);
8234                 wdev = __cfg80211_wdev_from_attrs(genl_info_net(info),
8235                                                   info->attrs);
8236                 if (IS_ERR(wdev)) {
8237                         mutex_unlock(&cfg80211_mutex);
8238                         if (rtnl)
8239                                 rtnl_unlock();
8240                         return PTR_ERR(wdev);
8241                 }
8242
8243                 dev = wdev->netdev;
8244                 rdev = wiphy_to_dev(wdev->wiphy);
8245
8246                 if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
8247                         if (!dev) {
8248                                 mutex_unlock(&cfg80211_mutex);
8249                                 if (rtnl)
8250                                         rtnl_unlock();
8251                                 return -EINVAL;
8252                         }
8253
8254                         info->user_ptr[1] = dev;
8255                 } else {
8256                         info->user_ptr[1] = wdev;
8257                 }
8258
8259                 if (dev) {
8260                         if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
8261                             !netif_running(dev)) {
8262                                 mutex_unlock(&cfg80211_mutex);
8263                                 if (rtnl)
8264                                         rtnl_unlock();
8265                                 return -ENETDOWN;
8266                         }
8267
8268                         dev_hold(dev);
8269                 } else if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP) {
8270                         if (!wdev->p2p_started) {
8271                                 mutex_unlock(&cfg80211_mutex);
8272                                 if (rtnl)
8273                                         rtnl_unlock();
8274                                 return -ENETDOWN;
8275                         }
8276                 }
8277
8278                 cfg80211_lock_rdev(rdev);
8279
8280                 mutex_unlock(&cfg80211_mutex);
8281
8282                 info->user_ptr[0] = rdev;
8283         }
8284
8285         return 0;
8286 }
8287
8288 static void nl80211_post_doit(struct genl_ops *ops, struct sk_buff *skb,
8289                               struct genl_info *info)
8290 {
8291         if (info->user_ptr[0])
8292                 cfg80211_unlock_rdev(info->user_ptr[0]);
8293         if (info->user_ptr[1]) {
8294                 if (ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
8295                         struct wireless_dev *wdev = info->user_ptr[1];
8296
8297                         if (wdev->netdev)
8298                                 dev_put(wdev->netdev);
8299                 } else {
8300                         dev_put(info->user_ptr[1]);
8301                 }
8302         }
8303         if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
8304                 rtnl_unlock();
8305 }
8306
8307 static struct genl_ops nl80211_ops[] = {
8308         {
8309                 .cmd = NL80211_CMD_GET_WIPHY,
8310                 .doit = nl80211_get_wiphy,
8311                 .dumpit = nl80211_dump_wiphy,
8312                 .policy = nl80211_policy,
8313                 /* can be retrieved by unprivileged users */
8314                 .internal_flags = NL80211_FLAG_NEED_WIPHY,
8315         },
8316         {
8317                 .cmd = NL80211_CMD_SET_WIPHY,
8318                 .doit = nl80211_set_wiphy,
8319                 .policy = nl80211_policy,
8320                 .flags = GENL_ADMIN_PERM,
8321                 .internal_flags = NL80211_FLAG_NEED_RTNL,
8322         },
8323         {
8324                 .cmd = NL80211_CMD_GET_INTERFACE,
8325                 .doit = nl80211_get_interface,
8326                 .dumpit = nl80211_dump_interface,
8327                 .policy = nl80211_policy,
8328                 /* can be retrieved by unprivileged users */
8329                 .internal_flags = NL80211_FLAG_NEED_WDEV,
8330         },
8331         {
8332                 .cmd = NL80211_CMD_SET_INTERFACE,
8333                 .doit = nl80211_set_interface,
8334                 .policy = nl80211_policy,
8335                 .flags = GENL_ADMIN_PERM,
8336                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
8337                                   NL80211_FLAG_NEED_RTNL,
8338         },
8339         {
8340                 .cmd = NL80211_CMD_NEW_INTERFACE,
8341                 .doit = nl80211_new_interface,
8342                 .policy = nl80211_policy,
8343                 .flags = GENL_ADMIN_PERM,
8344                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
8345                                   NL80211_FLAG_NEED_RTNL,
8346         },
8347         {
8348                 .cmd = NL80211_CMD_DEL_INTERFACE,
8349                 .doit = nl80211_del_interface,
8350                 .policy = nl80211_policy,
8351                 .flags = GENL_ADMIN_PERM,
8352                 .internal_flags = NL80211_FLAG_NEED_WDEV |
8353                                   NL80211_FLAG_NEED_RTNL,
8354         },
8355         {
8356                 .cmd = NL80211_CMD_GET_KEY,
8357                 .doit = nl80211_get_key,
8358                 .policy = nl80211_policy,
8359                 .flags = GENL_ADMIN_PERM,
8360                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8361                                   NL80211_FLAG_NEED_RTNL,
8362         },
8363         {
8364                 .cmd = NL80211_CMD_SET_KEY,
8365                 .doit = nl80211_set_key,
8366                 .policy = nl80211_policy,
8367                 .flags = GENL_ADMIN_PERM,
8368                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8369                                   NL80211_FLAG_NEED_RTNL,
8370         },
8371         {
8372                 .cmd = NL80211_CMD_NEW_KEY,
8373                 .doit = nl80211_new_key,
8374                 .policy = nl80211_policy,
8375                 .flags = GENL_ADMIN_PERM,
8376                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8377                                   NL80211_FLAG_NEED_RTNL,
8378         },
8379         {
8380                 .cmd = NL80211_CMD_DEL_KEY,
8381                 .doit = nl80211_del_key,
8382                 .policy = nl80211_policy,
8383                 .flags = GENL_ADMIN_PERM,
8384                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8385                                   NL80211_FLAG_NEED_RTNL,
8386         },
8387         {
8388                 .cmd = NL80211_CMD_SET_BEACON,
8389                 .policy = nl80211_policy,
8390                 .flags = GENL_ADMIN_PERM,
8391                 .doit = nl80211_set_beacon,
8392                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8393                                   NL80211_FLAG_NEED_RTNL,
8394         },
8395         {
8396                 .cmd = NL80211_CMD_START_AP,
8397                 .policy = nl80211_policy,
8398                 .flags = GENL_ADMIN_PERM,
8399                 .doit = nl80211_start_ap,
8400                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8401                                   NL80211_FLAG_NEED_RTNL,
8402         },
8403         {
8404                 .cmd = NL80211_CMD_STOP_AP,
8405                 .policy = nl80211_policy,
8406                 .flags = GENL_ADMIN_PERM,
8407                 .doit = nl80211_stop_ap,
8408                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8409                                   NL80211_FLAG_NEED_RTNL,
8410         },
8411         {
8412                 .cmd = NL80211_CMD_GET_STATION,
8413                 .doit = nl80211_get_station,
8414                 .dumpit = nl80211_dump_station,
8415                 .policy = nl80211_policy,
8416                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
8417                                   NL80211_FLAG_NEED_RTNL,
8418         },
8419         {
8420                 .cmd = NL80211_CMD_SET_STATION,
8421                 .doit = nl80211_set_station,
8422                 .policy = nl80211_policy,
8423                 .flags = GENL_ADMIN_PERM,
8424                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8425                                   NL80211_FLAG_NEED_RTNL,
8426         },
8427         {
8428                 .cmd = NL80211_CMD_NEW_STATION,
8429                 .doit = nl80211_new_station,
8430                 .policy = nl80211_policy,
8431                 .flags = GENL_ADMIN_PERM,
8432                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8433                                   NL80211_FLAG_NEED_RTNL,
8434         },
8435         {
8436                 .cmd = NL80211_CMD_DEL_STATION,
8437                 .doit = nl80211_del_station,
8438                 .policy = nl80211_policy,
8439                 .flags = GENL_ADMIN_PERM,
8440                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8441                                   NL80211_FLAG_NEED_RTNL,
8442         },
8443         {
8444                 .cmd = NL80211_CMD_GET_MPATH,
8445                 .doit = nl80211_get_mpath,
8446                 .dumpit = nl80211_dump_mpath,
8447                 .policy = nl80211_policy,
8448                 .flags = GENL_ADMIN_PERM,
8449                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8450                                   NL80211_FLAG_NEED_RTNL,
8451         },
8452         {
8453                 .cmd = NL80211_CMD_SET_MPATH,
8454                 .doit = nl80211_set_mpath,
8455                 .policy = nl80211_policy,
8456                 .flags = GENL_ADMIN_PERM,
8457                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8458                                   NL80211_FLAG_NEED_RTNL,
8459         },
8460         {
8461                 .cmd = NL80211_CMD_NEW_MPATH,
8462                 .doit = nl80211_new_mpath,
8463                 .policy = nl80211_policy,
8464                 .flags = GENL_ADMIN_PERM,
8465                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8466                                   NL80211_FLAG_NEED_RTNL,
8467         },
8468         {
8469                 .cmd = NL80211_CMD_DEL_MPATH,
8470                 .doit = nl80211_del_mpath,
8471                 .policy = nl80211_policy,
8472                 .flags = GENL_ADMIN_PERM,
8473                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8474                                   NL80211_FLAG_NEED_RTNL,
8475         },
8476         {
8477                 .cmd = NL80211_CMD_SET_BSS,
8478                 .doit = nl80211_set_bss,
8479                 .policy = nl80211_policy,
8480                 .flags = GENL_ADMIN_PERM,
8481                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8482                                   NL80211_FLAG_NEED_RTNL,
8483         },
8484         {
8485                 .cmd = NL80211_CMD_GET_REG,
8486                 .doit = nl80211_get_reg,
8487                 .policy = nl80211_policy,
8488                 /* can be retrieved by unprivileged users */
8489         },
8490         {
8491                 .cmd = NL80211_CMD_SET_REG,
8492                 .doit = nl80211_set_reg,
8493                 .policy = nl80211_policy,
8494                 .flags = GENL_ADMIN_PERM,
8495         },
8496         {
8497                 .cmd = NL80211_CMD_REQ_SET_REG,
8498                 .doit = nl80211_req_set_reg,
8499                 .policy = nl80211_policy,
8500                 .flags = GENL_ADMIN_PERM,
8501         },
8502         {
8503                 .cmd = NL80211_CMD_GET_MESH_CONFIG,
8504                 .doit = nl80211_get_mesh_config,
8505                 .policy = nl80211_policy,
8506                 /* can be retrieved by unprivileged users */
8507                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8508                                   NL80211_FLAG_NEED_RTNL,
8509         },
8510         {
8511                 .cmd = NL80211_CMD_SET_MESH_CONFIG,
8512                 .doit = nl80211_update_mesh_config,
8513                 .policy = nl80211_policy,
8514                 .flags = GENL_ADMIN_PERM,
8515                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8516                                   NL80211_FLAG_NEED_RTNL,
8517         },
8518         {
8519                 .cmd = NL80211_CMD_TRIGGER_SCAN,
8520                 .doit = nl80211_trigger_scan,
8521                 .policy = nl80211_policy,
8522                 .flags = GENL_ADMIN_PERM,
8523                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
8524                                   NL80211_FLAG_NEED_RTNL,
8525         },
8526         {
8527                 .cmd = NL80211_CMD_GET_SCAN,
8528                 .policy = nl80211_policy,
8529                 .dumpit = nl80211_dump_scan,
8530         },
8531         {
8532                 .cmd = NL80211_CMD_START_SCHED_SCAN,
8533                 .doit = nl80211_start_sched_scan,
8534                 .policy = nl80211_policy,
8535                 .flags = GENL_ADMIN_PERM,
8536                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8537                                   NL80211_FLAG_NEED_RTNL,
8538         },
8539         {
8540                 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
8541                 .doit = nl80211_stop_sched_scan,
8542                 .policy = nl80211_policy,
8543                 .flags = GENL_ADMIN_PERM,
8544                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8545                                   NL80211_FLAG_NEED_RTNL,
8546         },
8547         {
8548                 .cmd = NL80211_CMD_AUTHENTICATE,
8549                 .doit = nl80211_authenticate,
8550                 .policy = nl80211_policy,
8551                 .flags = GENL_ADMIN_PERM,
8552                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8553                                   NL80211_FLAG_NEED_RTNL,
8554         },
8555         {
8556                 .cmd = NL80211_CMD_ASSOCIATE,
8557                 .doit = nl80211_associate,
8558                 .policy = nl80211_policy,
8559                 .flags = GENL_ADMIN_PERM,
8560                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8561                                   NL80211_FLAG_NEED_RTNL,
8562         },
8563         {
8564                 .cmd = NL80211_CMD_DEAUTHENTICATE,
8565                 .doit = nl80211_deauthenticate,
8566                 .policy = nl80211_policy,
8567                 .flags = GENL_ADMIN_PERM,
8568                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8569                                   NL80211_FLAG_NEED_RTNL,
8570         },
8571         {
8572                 .cmd = NL80211_CMD_DISASSOCIATE,
8573                 .doit = nl80211_disassociate,
8574                 .policy = nl80211_policy,
8575                 .flags = GENL_ADMIN_PERM,
8576                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8577                                   NL80211_FLAG_NEED_RTNL,
8578         },
8579         {
8580                 .cmd = NL80211_CMD_JOIN_IBSS,
8581                 .doit = nl80211_join_ibss,
8582                 .policy = nl80211_policy,
8583                 .flags = GENL_ADMIN_PERM,
8584                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8585                                   NL80211_FLAG_NEED_RTNL,
8586         },
8587         {
8588                 .cmd = NL80211_CMD_LEAVE_IBSS,
8589                 .doit = nl80211_leave_ibss,
8590                 .policy = nl80211_policy,
8591                 .flags = GENL_ADMIN_PERM,
8592                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8593                                   NL80211_FLAG_NEED_RTNL,
8594         },
8595 #ifdef CONFIG_NL80211_TESTMODE
8596         {
8597                 .cmd = NL80211_CMD_TESTMODE,
8598                 .doit = nl80211_testmode_do,
8599                 .dumpit = nl80211_testmode_dump,
8600                 .policy = nl80211_policy,
8601                 .flags = GENL_ADMIN_PERM,
8602                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
8603                                   NL80211_FLAG_NEED_RTNL,
8604         },
8605 #endif
8606         {
8607                 .cmd = NL80211_CMD_CONNECT,
8608                 .doit = nl80211_connect,
8609                 .policy = nl80211_policy,
8610                 .flags = GENL_ADMIN_PERM,
8611                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8612                                   NL80211_FLAG_NEED_RTNL,
8613         },
8614         {
8615                 .cmd = NL80211_CMD_DISCONNECT,
8616                 .doit = nl80211_disconnect,
8617                 .policy = nl80211_policy,
8618                 .flags = GENL_ADMIN_PERM,
8619                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8620                                   NL80211_FLAG_NEED_RTNL,
8621         },
8622         {
8623                 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
8624                 .doit = nl80211_wiphy_netns,
8625                 .policy = nl80211_policy,
8626                 .flags = GENL_ADMIN_PERM,
8627                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
8628                                   NL80211_FLAG_NEED_RTNL,
8629         },
8630         {
8631                 .cmd = NL80211_CMD_GET_SURVEY,
8632                 .policy = nl80211_policy,
8633                 .dumpit = nl80211_dump_survey,
8634         },
8635         {
8636                 .cmd = NL80211_CMD_SET_PMKSA,
8637                 .doit = nl80211_setdel_pmksa,
8638                 .policy = nl80211_policy,
8639                 .flags = GENL_ADMIN_PERM,
8640                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8641                                   NL80211_FLAG_NEED_RTNL,
8642         },
8643         {
8644                 .cmd = NL80211_CMD_DEL_PMKSA,
8645                 .doit = nl80211_setdel_pmksa,
8646                 .policy = nl80211_policy,
8647                 .flags = GENL_ADMIN_PERM,
8648                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8649                                   NL80211_FLAG_NEED_RTNL,
8650         },
8651         {
8652                 .cmd = NL80211_CMD_FLUSH_PMKSA,
8653                 .doit = nl80211_flush_pmksa,
8654                 .policy = nl80211_policy,
8655                 .flags = GENL_ADMIN_PERM,
8656                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8657                                   NL80211_FLAG_NEED_RTNL,
8658         },
8659         {
8660                 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
8661                 .doit = nl80211_remain_on_channel,
8662                 .policy = nl80211_policy,
8663                 .flags = GENL_ADMIN_PERM,
8664                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
8665                                   NL80211_FLAG_NEED_RTNL,
8666         },
8667         {
8668                 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
8669                 .doit = nl80211_cancel_remain_on_channel,
8670                 .policy = nl80211_policy,
8671                 .flags = GENL_ADMIN_PERM,
8672                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
8673                                   NL80211_FLAG_NEED_RTNL,
8674         },
8675         {
8676                 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
8677                 .doit = nl80211_set_tx_bitrate_mask,
8678                 .policy = nl80211_policy,
8679                 .flags = GENL_ADMIN_PERM,
8680                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
8681                                   NL80211_FLAG_NEED_RTNL,
8682         },
8683         {
8684                 .cmd = NL80211_CMD_REGISTER_FRAME,
8685                 .doit = nl80211_register_mgmt,
8686                 .policy = nl80211_policy,
8687                 .flags = GENL_ADMIN_PERM,
8688                 .internal_flags = NL80211_FLAG_NEED_WDEV |
8689                                   NL80211_FLAG_NEED_RTNL,
8690         },
8691         {
8692                 .cmd = NL80211_CMD_FRAME,
8693                 .doit = nl80211_tx_mgmt,
8694                 .policy = nl80211_policy,
8695                 .flags = GENL_ADMIN_PERM,
8696                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
8697                                   NL80211_FLAG_NEED_RTNL,
8698         },
8699         {
8700                 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
8701                 .doit = nl80211_tx_mgmt_cancel_wait,
8702                 .policy = nl80211_policy,
8703                 .flags = GENL_ADMIN_PERM,
8704                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
8705                                   NL80211_FLAG_NEED_RTNL,
8706         },
8707         {
8708                 .cmd = NL80211_CMD_SET_POWER_SAVE,
8709                 .doit = nl80211_set_power_save,
8710                 .policy = nl80211_policy,
8711                 .flags = GENL_ADMIN_PERM,
8712                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
8713                                   NL80211_FLAG_NEED_RTNL,
8714         },
8715         {
8716                 .cmd = NL80211_CMD_GET_POWER_SAVE,
8717                 .doit = nl80211_get_power_save,
8718                 .policy = nl80211_policy,
8719                 /* can be retrieved by unprivileged users */
8720                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
8721                                   NL80211_FLAG_NEED_RTNL,
8722         },
8723         {
8724                 .cmd = NL80211_CMD_SET_CQM,
8725                 .doit = nl80211_set_cqm,
8726                 .policy = nl80211_policy,
8727                 .flags = GENL_ADMIN_PERM,
8728                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
8729                                   NL80211_FLAG_NEED_RTNL,
8730         },
8731         {
8732                 .cmd = NL80211_CMD_SET_CHANNEL,
8733                 .doit = nl80211_set_channel,
8734                 .policy = nl80211_policy,
8735                 .flags = GENL_ADMIN_PERM,
8736                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
8737                                   NL80211_FLAG_NEED_RTNL,
8738         },
8739         {
8740                 .cmd = NL80211_CMD_SET_WDS_PEER,
8741                 .doit = nl80211_set_wds_peer,
8742                 .policy = nl80211_policy,
8743                 .flags = GENL_ADMIN_PERM,
8744                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
8745                                   NL80211_FLAG_NEED_RTNL,
8746         },
8747         {
8748                 .cmd = NL80211_CMD_JOIN_MESH,
8749                 .doit = nl80211_join_mesh,
8750                 .policy = nl80211_policy,
8751                 .flags = GENL_ADMIN_PERM,
8752                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8753                                   NL80211_FLAG_NEED_RTNL,
8754         },
8755         {
8756                 .cmd = NL80211_CMD_LEAVE_MESH,
8757                 .doit = nl80211_leave_mesh,
8758                 .policy = nl80211_policy,
8759                 .flags = GENL_ADMIN_PERM,
8760                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8761                                   NL80211_FLAG_NEED_RTNL,
8762         },
8763 #ifdef CONFIG_PM
8764         {
8765                 .cmd = NL80211_CMD_GET_WOWLAN,
8766                 .doit = nl80211_get_wowlan,
8767                 .policy = nl80211_policy,
8768                 /* can be retrieved by unprivileged users */
8769                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
8770                                   NL80211_FLAG_NEED_RTNL,
8771         },
8772         {
8773                 .cmd = NL80211_CMD_SET_WOWLAN,
8774                 .doit = nl80211_set_wowlan,
8775                 .policy = nl80211_policy,
8776                 .flags = GENL_ADMIN_PERM,
8777                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
8778                                   NL80211_FLAG_NEED_RTNL,
8779         },
8780 #endif
8781         {
8782                 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
8783                 .doit = nl80211_set_rekey_data,
8784                 .policy = nl80211_policy,
8785                 .flags = GENL_ADMIN_PERM,
8786                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8787                                   NL80211_FLAG_NEED_RTNL,
8788         },
8789         {
8790                 .cmd = NL80211_CMD_TDLS_MGMT,
8791                 .doit = nl80211_tdls_mgmt,
8792                 .policy = nl80211_policy,
8793                 .flags = GENL_ADMIN_PERM,
8794                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8795                                   NL80211_FLAG_NEED_RTNL,
8796         },
8797         {
8798                 .cmd = NL80211_CMD_TDLS_OPER,
8799                 .doit = nl80211_tdls_oper,
8800                 .policy = nl80211_policy,
8801                 .flags = GENL_ADMIN_PERM,
8802                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8803                                   NL80211_FLAG_NEED_RTNL,
8804         },
8805         {
8806                 .cmd = NL80211_CMD_UNEXPECTED_FRAME,
8807                 .doit = nl80211_register_unexpected_frame,
8808                 .policy = nl80211_policy,
8809                 .flags = GENL_ADMIN_PERM,
8810                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
8811                                   NL80211_FLAG_NEED_RTNL,
8812         },
8813         {
8814                 .cmd = NL80211_CMD_PROBE_CLIENT,
8815                 .doit = nl80211_probe_client,
8816                 .policy = nl80211_policy,
8817                 .flags = GENL_ADMIN_PERM,
8818                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8819                                   NL80211_FLAG_NEED_RTNL,
8820         },
8821         {
8822                 .cmd = NL80211_CMD_REGISTER_BEACONS,
8823                 .doit = nl80211_register_beacons,
8824                 .policy = nl80211_policy,
8825                 .flags = GENL_ADMIN_PERM,
8826                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
8827                                   NL80211_FLAG_NEED_RTNL,
8828         },
8829         {
8830                 .cmd = NL80211_CMD_SET_NOACK_MAP,
8831                 .doit = nl80211_set_noack_map,
8832                 .policy = nl80211_policy,
8833                 .flags = GENL_ADMIN_PERM,
8834                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
8835                                   NL80211_FLAG_NEED_RTNL,
8836         },
8837         {
8838                 .cmd = NL80211_CMD_START_P2P_DEVICE,
8839                 .doit = nl80211_start_p2p_device,
8840                 .policy = nl80211_policy,
8841                 .flags = GENL_ADMIN_PERM,
8842                 .internal_flags = NL80211_FLAG_NEED_WDEV |
8843                                   NL80211_FLAG_NEED_RTNL,
8844         },
8845         {
8846                 .cmd = NL80211_CMD_STOP_P2P_DEVICE,
8847                 .doit = nl80211_stop_p2p_device,
8848                 .policy = nl80211_policy,
8849                 .flags = GENL_ADMIN_PERM,
8850                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
8851                                   NL80211_FLAG_NEED_RTNL,
8852         },
8853         {
8854                 .cmd = NL80211_CMD_SET_MCAST_RATE,
8855                 .doit = nl80211_set_mcast_rate,
8856                 .policy = nl80211_policy,
8857                 .flags = GENL_ADMIN_PERM,
8858                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
8859                                   NL80211_FLAG_NEED_RTNL,
8860         },
8861         {
8862                 .cmd = NL80211_CMD_SET_MAC_ACL,
8863                 .doit = nl80211_set_mac_acl,
8864                 .policy = nl80211_policy,
8865                 .flags = GENL_ADMIN_PERM,
8866                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
8867                                   NL80211_FLAG_NEED_RTNL,
8868         },
8869         {
8870                 .cmd = NL80211_CMD_RADAR_DETECT,
8871                 .doit = nl80211_start_radar_detection,
8872                 .policy = nl80211_policy,
8873                 .flags = GENL_ADMIN_PERM,
8874                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8875                                   NL80211_FLAG_NEED_RTNL,
8876         },
8877         {
8878                 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES,
8879                 .doit = nl80211_get_protocol_features,
8880                 .policy = nl80211_policy,
8881         },
8882         {
8883                 .cmd = NL80211_CMD_UPDATE_FT_IES,
8884                 .doit = nl80211_update_ft_ies,
8885                 .policy = nl80211_policy,
8886                 .flags = GENL_ADMIN_PERM,
8887                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8888                                   NL80211_FLAG_NEED_RTNL,
8889         },
8890 };
8891
8892 static struct genl_multicast_group nl80211_mlme_mcgrp = {
8893         .name = "mlme",
8894 };
8895
8896 /* multicast groups */
8897 static struct genl_multicast_group nl80211_config_mcgrp = {
8898         .name = "config",
8899 };
8900 static struct genl_multicast_group nl80211_scan_mcgrp = {
8901         .name = "scan",
8902 };
8903 static struct genl_multicast_group nl80211_regulatory_mcgrp = {
8904         .name = "regulatory",
8905 };
8906
8907 /* notification functions */
8908
8909 void nl80211_notify_dev_rename(struct cfg80211_registered_device *rdev)
8910 {
8911         struct sk_buff *msg;
8912
8913         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8914         if (!msg)
8915                 return;
8916
8917         if (nl80211_send_wiphy(rdev, msg, 0, 0, 0,
8918                                false, NULL, NULL, NULL) < 0) {
8919                 nlmsg_free(msg);
8920                 return;
8921         }
8922
8923         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
8924                                 nl80211_config_mcgrp.id, GFP_KERNEL);
8925 }
8926
8927 static int nl80211_add_scan_req(struct sk_buff *msg,
8928                                 struct cfg80211_registered_device *rdev)
8929 {
8930         struct cfg80211_scan_request *req = rdev->scan_req;
8931         struct nlattr *nest;
8932         int i;
8933
8934         lockdep_assert_held(&rdev->sched_scan_mtx);
8935
8936         if (WARN_ON(!req))
8937                 return 0;
8938
8939         nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS);
8940         if (!nest)
8941                 goto nla_put_failure;
8942         for (i = 0; i < req->n_ssids; i++) {
8943                 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid))
8944                         goto nla_put_failure;
8945         }
8946         nla_nest_end(msg, nest);
8947
8948         nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
8949         if (!nest)
8950                 goto nla_put_failure;
8951         for (i = 0; i < req->n_channels; i++) {
8952                 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
8953                         goto nla_put_failure;
8954         }
8955         nla_nest_end(msg, nest);
8956
8957         if (req->ie &&
8958             nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie))
8959                 goto nla_put_failure;
8960
8961         if (req->flags)
8962                 nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags);
8963
8964         return 0;
8965  nla_put_failure:
8966         return -ENOBUFS;
8967 }
8968
8969 static int nl80211_send_scan_msg(struct sk_buff *msg,
8970                                  struct cfg80211_registered_device *rdev,
8971                                  struct wireless_dev *wdev,
8972                                  u32 portid, u32 seq, int flags,
8973                                  u32 cmd)
8974 {
8975         void *hdr;
8976
8977         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
8978         if (!hdr)
8979                 return -1;
8980
8981         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
8982             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
8983                                          wdev->netdev->ifindex)) ||
8984             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
8985                 goto nla_put_failure;
8986
8987         /* ignore errors and send incomplete event anyway */
8988         nl80211_add_scan_req(msg, rdev);
8989
8990         return genlmsg_end(msg, hdr);
8991
8992  nla_put_failure:
8993         genlmsg_cancel(msg, hdr);
8994         return -EMSGSIZE;
8995 }
8996
8997 static int
8998 nl80211_send_sched_scan_msg(struct sk_buff *msg,
8999                             struct cfg80211_registered_device *rdev,
9000                             struct net_device *netdev,
9001                             u32 portid, u32 seq, int flags, u32 cmd)
9002 {
9003         void *hdr;
9004
9005         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
9006         if (!hdr)
9007                 return -1;
9008
9009         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9010             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
9011                 goto nla_put_failure;
9012
9013         return genlmsg_end(msg, hdr);
9014
9015  nla_put_failure:
9016         genlmsg_cancel(msg, hdr);
9017         return -EMSGSIZE;
9018 }
9019
9020 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
9021                              struct wireless_dev *wdev)
9022 {
9023         struct sk_buff *msg;
9024
9025         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9026         if (!msg)
9027                 return;
9028
9029         if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
9030                                   NL80211_CMD_TRIGGER_SCAN) < 0) {
9031                 nlmsg_free(msg);
9032                 return;
9033         }
9034
9035         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9036                                 nl80211_scan_mcgrp.id, GFP_KERNEL);
9037 }
9038
9039 void nl80211_send_scan_done(struct cfg80211_registered_device *rdev,
9040                             struct wireless_dev *wdev)
9041 {
9042         struct sk_buff *msg;
9043
9044         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9045         if (!msg)
9046                 return;
9047
9048         if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
9049                                   NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
9050                 nlmsg_free(msg);
9051                 return;
9052         }
9053
9054         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9055                                 nl80211_scan_mcgrp.id, GFP_KERNEL);
9056 }
9057
9058 void nl80211_send_scan_aborted(struct cfg80211_registered_device *rdev,
9059                                struct wireless_dev *wdev)
9060 {
9061         struct sk_buff *msg;
9062
9063         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9064         if (!msg)
9065                 return;
9066
9067         if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
9068                                   NL80211_CMD_SCAN_ABORTED) < 0) {
9069                 nlmsg_free(msg);
9070                 return;
9071         }
9072
9073         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9074                                 nl80211_scan_mcgrp.id, GFP_KERNEL);
9075 }
9076
9077 void nl80211_send_sched_scan_results(struct cfg80211_registered_device *rdev,
9078                                      struct net_device *netdev)
9079 {
9080         struct sk_buff *msg;
9081
9082         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9083         if (!msg)
9084                 return;
9085
9086         if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0,
9087                                         NL80211_CMD_SCHED_SCAN_RESULTS) < 0) {
9088                 nlmsg_free(msg);
9089                 return;
9090         }
9091
9092         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9093                                 nl80211_scan_mcgrp.id, GFP_KERNEL);
9094 }
9095
9096 void nl80211_send_sched_scan(struct cfg80211_registered_device *rdev,
9097                              struct net_device *netdev, u32 cmd)
9098 {
9099         struct sk_buff *msg;
9100
9101         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9102         if (!msg)
9103                 return;
9104
9105         if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0, cmd) < 0) {
9106                 nlmsg_free(msg);
9107                 return;
9108         }
9109
9110         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9111                                 nl80211_scan_mcgrp.id, GFP_KERNEL);
9112 }
9113
9114 /*
9115  * This can happen on global regulatory changes or device specific settings
9116  * based on custom world regulatory domains.
9117  */
9118 void nl80211_send_reg_change_event(struct regulatory_request *request)
9119 {
9120         struct sk_buff *msg;
9121         void *hdr;
9122
9123         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9124         if (!msg)
9125                 return;
9126
9127         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_CHANGE);
9128         if (!hdr) {
9129                 nlmsg_free(msg);
9130                 return;
9131         }
9132
9133         /* Userspace can always count this one always being set */
9134         if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator))
9135                 goto nla_put_failure;
9136
9137         if (request->alpha2[0] == '0' && request->alpha2[1] == '0') {
9138                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
9139                                NL80211_REGDOM_TYPE_WORLD))
9140                         goto nla_put_failure;
9141         } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') {
9142                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
9143                                NL80211_REGDOM_TYPE_CUSTOM_WORLD))
9144                         goto nla_put_failure;
9145         } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
9146                    request->intersect) {
9147                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
9148                                NL80211_REGDOM_TYPE_INTERSECTION))
9149                         goto nla_put_failure;
9150         } else {
9151                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
9152                                NL80211_REGDOM_TYPE_COUNTRY) ||
9153                     nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
9154                                    request->alpha2))
9155                         goto nla_put_failure;
9156         }
9157
9158         if (request->wiphy_idx != WIPHY_IDX_INVALID &&
9159             nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx))
9160                 goto nla_put_failure;
9161
9162         genlmsg_end(msg, hdr);
9163
9164         rcu_read_lock();
9165         genlmsg_multicast_allns(msg, 0, nl80211_regulatory_mcgrp.id,
9166                                 GFP_ATOMIC);
9167         rcu_read_unlock();
9168
9169         return;
9170
9171 nla_put_failure:
9172         genlmsg_cancel(msg, hdr);
9173         nlmsg_free(msg);
9174 }
9175
9176 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
9177                                     struct net_device *netdev,
9178                                     const u8 *buf, size_t len,
9179                                     enum nl80211_commands cmd, gfp_t gfp)
9180 {
9181         struct sk_buff *msg;
9182         void *hdr;
9183
9184         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9185         if (!msg)
9186                 return;
9187
9188         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
9189         if (!hdr) {
9190                 nlmsg_free(msg);
9191                 return;
9192         }
9193
9194         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9195             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
9196             nla_put(msg, NL80211_ATTR_FRAME, len, buf))
9197                 goto nla_put_failure;
9198
9199         genlmsg_end(msg, hdr);
9200
9201         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9202                                 nl80211_mlme_mcgrp.id, gfp);
9203         return;
9204
9205  nla_put_failure:
9206         genlmsg_cancel(msg, hdr);
9207         nlmsg_free(msg);
9208 }
9209
9210 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
9211                           struct net_device *netdev, const u8 *buf,
9212                           size_t len, gfp_t gfp)
9213 {
9214         nl80211_send_mlme_event(rdev, netdev, buf, len,
9215                                 NL80211_CMD_AUTHENTICATE, gfp);
9216 }
9217
9218 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
9219                            struct net_device *netdev, const u8 *buf,
9220                            size_t len, gfp_t gfp)
9221 {
9222         nl80211_send_mlme_event(rdev, netdev, buf, len,
9223                                 NL80211_CMD_ASSOCIATE, gfp);
9224 }
9225
9226 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
9227                          struct net_device *netdev, const u8 *buf,
9228                          size_t len, gfp_t gfp)
9229 {
9230         nl80211_send_mlme_event(rdev, netdev, buf, len,
9231                                 NL80211_CMD_DEAUTHENTICATE, gfp);
9232 }
9233
9234 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
9235                            struct net_device *netdev, const u8 *buf,
9236                            size_t len, gfp_t gfp)
9237 {
9238         nl80211_send_mlme_event(rdev, netdev, buf, len,
9239                                 NL80211_CMD_DISASSOCIATE, gfp);
9240 }
9241
9242 void cfg80211_send_unprot_deauth(struct net_device *dev, const u8 *buf,
9243                                  size_t len)
9244 {
9245         struct wireless_dev *wdev = dev->ieee80211_ptr;
9246         struct wiphy *wiphy = wdev->wiphy;
9247         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
9248
9249         trace_cfg80211_send_unprot_deauth(dev);
9250         nl80211_send_mlme_event(rdev, dev, buf, len,
9251                                 NL80211_CMD_UNPROT_DEAUTHENTICATE, GFP_ATOMIC);
9252 }
9253 EXPORT_SYMBOL(cfg80211_send_unprot_deauth);
9254
9255 void cfg80211_send_unprot_disassoc(struct net_device *dev, const u8 *buf,
9256                                    size_t len)
9257 {
9258         struct wireless_dev *wdev = dev->ieee80211_ptr;
9259         struct wiphy *wiphy = wdev->wiphy;
9260         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
9261
9262         trace_cfg80211_send_unprot_disassoc(dev);
9263         nl80211_send_mlme_event(rdev, dev, buf, len,
9264                                 NL80211_CMD_UNPROT_DISASSOCIATE, GFP_ATOMIC);
9265 }
9266 EXPORT_SYMBOL(cfg80211_send_unprot_disassoc);
9267
9268 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
9269                                       struct net_device *netdev, int cmd,
9270                                       const u8 *addr, gfp_t gfp)
9271 {
9272         struct sk_buff *msg;
9273         void *hdr;
9274
9275         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9276         if (!msg)
9277                 return;
9278
9279         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
9280         if (!hdr) {
9281                 nlmsg_free(msg);
9282                 return;
9283         }
9284
9285         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9286             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
9287             nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
9288             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
9289                 goto nla_put_failure;
9290
9291         genlmsg_end(msg, hdr);
9292
9293         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9294                                 nl80211_mlme_mcgrp.id, gfp);
9295         return;
9296
9297  nla_put_failure:
9298         genlmsg_cancel(msg, hdr);
9299         nlmsg_free(msg);
9300 }
9301
9302 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
9303                                struct net_device *netdev, const u8 *addr,
9304                                gfp_t gfp)
9305 {
9306         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
9307                                   addr, gfp);
9308 }
9309
9310 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
9311                                 struct net_device *netdev, const u8 *addr,
9312                                 gfp_t gfp)
9313 {
9314         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
9315                                   addr, gfp);
9316 }
9317
9318 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
9319                                  struct net_device *netdev, const u8 *bssid,
9320                                  const u8 *req_ie, size_t req_ie_len,
9321                                  const u8 *resp_ie, size_t resp_ie_len,
9322                                  u16 status, gfp_t gfp)
9323 {
9324         struct sk_buff *msg;
9325         void *hdr;
9326
9327         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9328         if (!msg)
9329                 return;
9330
9331         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
9332         if (!hdr) {
9333                 nlmsg_free(msg);
9334                 return;
9335         }
9336
9337         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9338             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
9339             (bssid && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid)) ||
9340             nla_put_u16(msg, NL80211_ATTR_STATUS_CODE, status) ||
9341             (req_ie &&
9342              nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
9343             (resp_ie &&
9344              nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
9345                 goto nla_put_failure;
9346
9347         genlmsg_end(msg, hdr);
9348
9349         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9350                                 nl80211_mlme_mcgrp.id, gfp);
9351         return;
9352
9353  nla_put_failure:
9354         genlmsg_cancel(msg, hdr);
9355         nlmsg_free(msg);
9356
9357 }
9358
9359 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
9360                          struct net_device *netdev, const u8 *bssid,
9361                          const u8 *req_ie, size_t req_ie_len,
9362                          const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp)
9363 {
9364         struct sk_buff *msg;
9365         void *hdr;
9366
9367         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9368         if (!msg)
9369                 return;
9370
9371         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
9372         if (!hdr) {
9373                 nlmsg_free(msg);
9374                 return;
9375         }
9376
9377         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9378             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
9379             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid) ||
9380             (req_ie &&
9381              nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
9382             (resp_ie &&
9383              nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
9384                 goto nla_put_failure;
9385
9386         genlmsg_end(msg, hdr);
9387
9388         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9389                                 nl80211_mlme_mcgrp.id, gfp);
9390         return;
9391
9392  nla_put_failure:
9393         genlmsg_cancel(msg, hdr);
9394         nlmsg_free(msg);
9395
9396 }
9397
9398 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
9399                                struct net_device *netdev, u16 reason,
9400                                const u8 *ie, size_t ie_len, bool from_ap)
9401 {
9402         struct sk_buff *msg;
9403         void *hdr;
9404
9405         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9406         if (!msg)
9407                 return;
9408
9409         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
9410         if (!hdr) {
9411                 nlmsg_free(msg);
9412                 return;
9413         }
9414
9415         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9416             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
9417             (from_ap && reason &&
9418              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) ||
9419             (from_ap &&
9420              nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) ||
9421             (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie)))
9422                 goto nla_put_failure;
9423
9424         genlmsg_end(msg, hdr);
9425
9426         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9427                                 nl80211_mlme_mcgrp.id, GFP_KERNEL);
9428         return;
9429
9430  nla_put_failure:
9431         genlmsg_cancel(msg, hdr);
9432         nlmsg_free(msg);
9433
9434 }
9435
9436 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
9437                              struct net_device *netdev, const u8 *bssid,
9438                              gfp_t gfp)
9439 {
9440         struct sk_buff *msg;
9441         void *hdr;
9442
9443         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9444         if (!msg)
9445                 return;
9446
9447         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
9448         if (!hdr) {
9449                 nlmsg_free(msg);
9450                 return;
9451         }
9452
9453         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9454             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
9455             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
9456                 goto nla_put_failure;
9457
9458         genlmsg_end(msg, hdr);
9459
9460         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9461                                 nl80211_mlme_mcgrp.id, gfp);
9462         return;
9463
9464  nla_put_failure:
9465         genlmsg_cancel(msg, hdr);
9466         nlmsg_free(msg);
9467 }
9468
9469 void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr,
9470                                         const u8* ie, u8 ie_len, gfp_t gfp)
9471 {
9472         struct wireless_dev *wdev = dev->ieee80211_ptr;
9473         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
9474         struct sk_buff *msg;
9475         void *hdr;
9476
9477         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT))
9478                 return;
9479
9480         trace_cfg80211_notify_new_peer_candidate(dev, addr);
9481
9482         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9483         if (!msg)
9484                 return;
9485
9486         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
9487         if (!hdr) {
9488                 nlmsg_free(msg);
9489                 return;
9490         }
9491
9492         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9493             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
9494             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
9495             (ie_len && ie &&
9496              nla_put(msg, NL80211_ATTR_IE, ie_len , ie)))
9497                 goto nla_put_failure;
9498
9499         genlmsg_end(msg, hdr);
9500
9501         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9502                                 nl80211_mlme_mcgrp.id, gfp);
9503         return;
9504
9505  nla_put_failure:
9506         genlmsg_cancel(msg, hdr);
9507         nlmsg_free(msg);
9508 }
9509 EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate);
9510
9511 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
9512                                  struct net_device *netdev, const u8 *addr,
9513                                  enum nl80211_key_type key_type, int key_id,
9514                                  const u8 *tsc, gfp_t gfp)
9515 {
9516         struct sk_buff *msg;
9517         void *hdr;
9518
9519         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9520         if (!msg)
9521                 return;
9522
9523         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
9524         if (!hdr) {
9525                 nlmsg_free(msg);
9526                 return;
9527         }
9528
9529         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9530             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
9531             (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
9532             nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) ||
9533             (key_id != -1 &&
9534              nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) ||
9535             (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc)))
9536                 goto nla_put_failure;
9537
9538         genlmsg_end(msg, hdr);
9539
9540         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9541                                 nl80211_mlme_mcgrp.id, gfp);
9542         return;
9543
9544  nla_put_failure:
9545         genlmsg_cancel(msg, hdr);
9546         nlmsg_free(msg);
9547 }
9548
9549 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
9550                                     struct ieee80211_channel *channel_before,
9551                                     struct ieee80211_channel *channel_after)
9552 {
9553         struct sk_buff *msg;
9554         void *hdr;
9555         struct nlattr *nl_freq;
9556
9557         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
9558         if (!msg)
9559                 return;
9560
9561         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
9562         if (!hdr) {
9563                 nlmsg_free(msg);
9564                 return;
9565         }
9566
9567         /*
9568          * Since we are applying the beacon hint to a wiphy we know its
9569          * wiphy_idx is valid
9570          */
9571         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
9572                 goto nla_put_failure;
9573
9574         /* Before */
9575         nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE);
9576         if (!nl_freq)
9577                 goto nla_put_failure;
9578         if (nl80211_msg_put_channel(msg, channel_before, false))
9579                 goto nla_put_failure;
9580         nla_nest_end(msg, nl_freq);
9581
9582         /* After */
9583         nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER);
9584         if (!nl_freq)
9585                 goto nla_put_failure;
9586         if (nl80211_msg_put_channel(msg, channel_after, false))
9587                 goto nla_put_failure;
9588         nla_nest_end(msg, nl_freq);
9589
9590         genlmsg_end(msg, hdr);
9591
9592         rcu_read_lock();
9593         genlmsg_multicast_allns(msg, 0, nl80211_regulatory_mcgrp.id,
9594                                 GFP_ATOMIC);
9595         rcu_read_unlock();
9596
9597         return;
9598
9599 nla_put_failure:
9600         genlmsg_cancel(msg, hdr);
9601         nlmsg_free(msg);
9602 }
9603
9604 static void nl80211_send_remain_on_chan_event(
9605         int cmd, struct cfg80211_registered_device *rdev,
9606         struct wireless_dev *wdev, u64 cookie,
9607         struct ieee80211_channel *chan,
9608         unsigned int duration, gfp_t gfp)
9609 {
9610         struct sk_buff *msg;
9611         void *hdr;
9612
9613         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9614         if (!msg)
9615                 return;
9616
9617         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
9618         if (!hdr) {
9619                 nlmsg_free(msg);
9620                 return;
9621         }
9622
9623         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9624             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
9625                                          wdev->netdev->ifindex)) ||
9626             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
9627             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) ||
9628             nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
9629                         NL80211_CHAN_NO_HT) ||
9630             nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
9631                 goto nla_put_failure;
9632
9633         if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL &&
9634             nla_put_u32(msg, NL80211_ATTR_DURATION, duration))
9635                 goto nla_put_failure;
9636
9637         genlmsg_end(msg, hdr);
9638
9639         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9640                                 nl80211_mlme_mcgrp.id, gfp);
9641         return;
9642
9643  nla_put_failure:
9644         genlmsg_cancel(msg, hdr);
9645         nlmsg_free(msg);
9646 }
9647
9648 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie,
9649                                struct ieee80211_channel *chan,
9650                                unsigned int duration, gfp_t gfp)
9651 {
9652         struct wiphy *wiphy = wdev->wiphy;
9653         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
9654
9655         trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration);
9656         nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
9657                                           rdev, wdev, cookie, chan,
9658                                           duration, gfp);
9659 }
9660 EXPORT_SYMBOL(cfg80211_ready_on_channel);
9661
9662 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie,
9663                                         struct ieee80211_channel *chan,
9664                                         gfp_t gfp)
9665 {
9666         struct wiphy *wiphy = wdev->wiphy;
9667         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
9668
9669         trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan);
9670         nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
9671                                           rdev, wdev, cookie, chan, 0, gfp);
9672 }
9673 EXPORT_SYMBOL(cfg80211_remain_on_channel_expired);
9674
9675 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr,
9676                       struct station_info *sinfo, gfp_t gfp)
9677 {
9678         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
9679         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
9680         struct sk_buff *msg;
9681
9682         trace_cfg80211_new_sta(dev, mac_addr, sinfo);
9683
9684         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9685         if (!msg)
9686                 return;
9687
9688         if (nl80211_send_station(msg, 0, 0, 0,
9689                                  rdev, dev, mac_addr, sinfo) < 0) {
9690                 nlmsg_free(msg);
9691                 return;
9692         }
9693
9694         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9695                                 nl80211_mlme_mcgrp.id, gfp);
9696 }
9697 EXPORT_SYMBOL(cfg80211_new_sta);
9698
9699 void cfg80211_del_sta(struct net_device *dev, const u8 *mac_addr, gfp_t gfp)
9700 {
9701         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
9702         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
9703         struct sk_buff *msg;
9704         void *hdr;
9705
9706         trace_cfg80211_del_sta(dev, mac_addr);
9707
9708         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9709         if (!msg)
9710                 return;
9711
9712         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_STATION);
9713         if (!hdr) {
9714                 nlmsg_free(msg);
9715                 return;
9716         }
9717
9718         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
9719             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
9720                 goto nla_put_failure;
9721
9722         genlmsg_end(msg, hdr);
9723
9724         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9725                                 nl80211_mlme_mcgrp.id, gfp);
9726         return;
9727
9728  nla_put_failure:
9729         genlmsg_cancel(msg, hdr);
9730         nlmsg_free(msg);
9731 }
9732 EXPORT_SYMBOL(cfg80211_del_sta);
9733
9734 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr,
9735                           enum nl80211_connect_failed_reason reason,
9736                           gfp_t gfp)
9737 {
9738         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
9739         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
9740         struct sk_buff *msg;
9741         void *hdr;
9742
9743         msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
9744         if (!msg)
9745                 return;
9746
9747         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED);
9748         if (!hdr) {
9749                 nlmsg_free(msg);
9750                 return;
9751         }
9752
9753         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
9754             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
9755             nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason))
9756                 goto nla_put_failure;
9757
9758         genlmsg_end(msg, hdr);
9759
9760         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9761                                 nl80211_mlme_mcgrp.id, gfp);
9762         return;
9763
9764  nla_put_failure:
9765         genlmsg_cancel(msg, hdr);
9766         nlmsg_free(msg);
9767 }
9768 EXPORT_SYMBOL(cfg80211_conn_failed);
9769
9770 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
9771                                        const u8 *addr, gfp_t gfp)
9772 {
9773         struct wireless_dev *wdev = dev->ieee80211_ptr;
9774         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
9775         struct sk_buff *msg;
9776         void *hdr;
9777         int err;
9778         u32 nlportid = ACCESS_ONCE(wdev->ap_unexpected_nlportid);
9779
9780         if (!nlportid)
9781                 return false;
9782
9783         msg = nlmsg_new(100, gfp);
9784         if (!msg)
9785                 return true;
9786
9787         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
9788         if (!hdr) {
9789                 nlmsg_free(msg);
9790                 return true;
9791         }
9792
9793         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9794             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
9795             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
9796                 goto nla_put_failure;
9797
9798         err = genlmsg_end(msg, hdr);
9799         if (err < 0) {
9800                 nlmsg_free(msg);
9801                 return true;
9802         }
9803
9804         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
9805         return true;
9806
9807  nla_put_failure:
9808         genlmsg_cancel(msg, hdr);
9809         nlmsg_free(msg);
9810         return true;
9811 }
9812
9813 bool cfg80211_rx_spurious_frame(struct net_device *dev,
9814                                 const u8 *addr, gfp_t gfp)
9815 {
9816         struct wireless_dev *wdev = dev->ieee80211_ptr;
9817         bool ret;
9818
9819         trace_cfg80211_rx_spurious_frame(dev, addr);
9820
9821         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
9822                     wdev->iftype != NL80211_IFTYPE_P2P_GO)) {
9823                 trace_cfg80211_return_bool(false);
9824                 return false;
9825         }
9826         ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
9827                                          addr, gfp);
9828         trace_cfg80211_return_bool(ret);
9829         return ret;
9830 }
9831 EXPORT_SYMBOL(cfg80211_rx_spurious_frame);
9832
9833 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev,
9834                                         const u8 *addr, gfp_t gfp)
9835 {
9836         struct wireless_dev *wdev = dev->ieee80211_ptr;
9837         bool ret;
9838
9839         trace_cfg80211_rx_unexpected_4addr_frame(dev, addr);
9840
9841         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
9842                     wdev->iftype != NL80211_IFTYPE_P2P_GO &&
9843                     wdev->iftype != NL80211_IFTYPE_AP_VLAN)) {
9844                 trace_cfg80211_return_bool(false);
9845                 return false;
9846         }
9847         ret = __nl80211_unexpected_frame(dev,
9848                                          NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
9849                                          addr, gfp);
9850         trace_cfg80211_return_bool(ret);
9851         return ret;
9852 }
9853 EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame);
9854
9855 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
9856                       struct wireless_dev *wdev, u32 nlportid,
9857                       int freq, int sig_dbm,
9858                       const u8 *buf, size_t len, gfp_t gfp)
9859 {
9860         struct net_device *netdev = wdev->netdev;
9861         struct sk_buff *msg;
9862         void *hdr;
9863
9864         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9865         if (!msg)
9866                 return -ENOMEM;
9867
9868         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
9869         if (!hdr) {
9870                 nlmsg_free(msg);
9871                 return -ENOMEM;
9872         }
9873
9874         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9875             (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
9876                                         netdev->ifindex)) ||
9877             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) ||
9878             (sig_dbm &&
9879              nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
9880             nla_put(msg, NL80211_ATTR_FRAME, len, buf))
9881                 goto nla_put_failure;
9882
9883         genlmsg_end(msg, hdr);
9884
9885         return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
9886
9887  nla_put_failure:
9888         genlmsg_cancel(msg, hdr);
9889         nlmsg_free(msg);
9890         return -ENOBUFS;
9891 }
9892
9893 void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie,
9894                              const u8 *buf, size_t len, bool ack, gfp_t gfp)
9895 {
9896         struct wiphy *wiphy = wdev->wiphy;
9897         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
9898         struct net_device *netdev = wdev->netdev;
9899         struct sk_buff *msg;
9900         void *hdr;
9901
9902         trace_cfg80211_mgmt_tx_status(wdev, cookie, ack);
9903
9904         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9905         if (!msg)
9906                 return;
9907
9908         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS);
9909         if (!hdr) {
9910                 nlmsg_free(msg);
9911                 return;
9912         }
9913
9914         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9915             (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
9916                                    netdev->ifindex)) ||
9917             nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
9918             nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) ||
9919             (ack && nla_put_flag(msg, NL80211_ATTR_ACK)))
9920                 goto nla_put_failure;
9921
9922         genlmsg_end(msg, hdr);
9923
9924         genlmsg_multicast(msg, 0, nl80211_mlme_mcgrp.id, gfp);
9925         return;
9926
9927  nla_put_failure:
9928         genlmsg_cancel(msg, hdr);
9929         nlmsg_free(msg);
9930 }
9931 EXPORT_SYMBOL(cfg80211_mgmt_tx_status);
9932
9933 void cfg80211_cqm_rssi_notify(struct net_device *dev,
9934                               enum nl80211_cqm_rssi_threshold_event rssi_event,
9935                               gfp_t gfp)
9936 {
9937         struct wireless_dev *wdev = dev->ieee80211_ptr;
9938         struct wiphy *wiphy = wdev->wiphy;
9939         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
9940         struct sk_buff *msg;
9941         struct nlattr *pinfoattr;
9942         void *hdr;
9943
9944         trace_cfg80211_cqm_rssi_notify(dev, rssi_event);
9945
9946         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9947         if (!msg)
9948                 return;
9949
9950         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
9951         if (!hdr) {
9952                 nlmsg_free(msg);
9953                 return;
9954         }
9955
9956         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9957             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
9958                 goto nla_put_failure;
9959
9960         pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
9961         if (!pinfoattr)
9962                 goto nla_put_failure;
9963
9964         if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
9965                         rssi_event))
9966                 goto nla_put_failure;
9967
9968         nla_nest_end(msg, pinfoattr);
9969
9970         genlmsg_end(msg, hdr);
9971
9972         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9973                                 nl80211_mlme_mcgrp.id, gfp);
9974         return;
9975
9976  nla_put_failure:
9977         genlmsg_cancel(msg, hdr);
9978         nlmsg_free(msg);
9979 }
9980 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify);
9981
9982 static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
9983                                      struct net_device *netdev, const u8 *bssid,
9984                                      const u8 *replay_ctr, gfp_t gfp)
9985 {
9986         struct sk_buff *msg;
9987         struct nlattr *rekey_attr;
9988         void *hdr;
9989
9990         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9991         if (!msg)
9992                 return;
9993
9994         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
9995         if (!hdr) {
9996                 nlmsg_free(msg);
9997                 return;
9998         }
9999
10000         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10001             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10002             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
10003                 goto nla_put_failure;
10004
10005         rekey_attr = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA);
10006         if (!rekey_attr)
10007                 goto nla_put_failure;
10008
10009         if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR,
10010                     NL80211_REPLAY_CTR_LEN, replay_ctr))
10011                 goto nla_put_failure;
10012
10013         nla_nest_end(msg, rekey_attr);
10014
10015         genlmsg_end(msg, hdr);
10016
10017         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10018                                 nl80211_mlme_mcgrp.id, gfp);
10019         return;
10020
10021  nla_put_failure:
10022         genlmsg_cancel(msg, hdr);
10023         nlmsg_free(msg);
10024 }
10025
10026 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid,
10027                                const u8 *replay_ctr, gfp_t gfp)
10028 {
10029         struct wireless_dev *wdev = dev->ieee80211_ptr;
10030         struct wiphy *wiphy = wdev->wiphy;
10031         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10032
10033         trace_cfg80211_gtk_rekey_notify(dev, bssid);
10034         nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp);
10035 }
10036 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify);
10037
10038 static void
10039 nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
10040                                struct net_device *netdev, int index,
10041                                const u8 *bssid, bool preauth, gfp_t gfp)
10042 {
10043         struct sk_buff *msg;
10044         struct nlattr *attr;
10045         void *hdr;
10046
10047         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10048         if (!msg)
10049                 return;
10050
10051         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
10052         if (!hdr) {
10053                 nlmsg_free(msg);
10054                 return;
10055         }
10056
10057         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10058             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
10059                 goto nla_put_failure;
10060
10061         attr = nla_nest_start(msg, NL80211_ATTR_PMKSA_CANDIDATE);
10062         if (!attr)
10063                 goto nla_put_failure;
10064
10065         if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) ||
10066             nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) ||
10067             (preauth &&
10068              nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH)))
10069                 goto nla_put_failure;
10070
10071         nla_nest_end(msg, attr);
10072
10073         genlmsg_end(msg, hdr);
10074
10075         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10076                                 nl80211_mlme_mcgrp.id, gfp);
10077         return;
10078
10079  nla_put_failure:
10080         genlmsg_cancel(msg, hdr);
10081         nlmsg_free(msg);
10082 }
10083
10084 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index,
10085                                      const u8 *bssid, bool preauth, gfp_t gfp)
10086 {
10087         struct wireless_dev *wdev = dev->ieee80211_ptr;
10088         struct wiphy *wiphy = wdev->wiphy;
10089         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10090
10091         trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth);
10092         nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp);
10093 }
10094 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify);
10095
10096 static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev,
10097                                      struct net_device *netdev,
10098                                      struct cfg80211_chan_def *chandef,
10099                                      gfp_t gfp)
10100 {
10101         struct sk_buff *msg;
10102         void *hdr;
10103
10104         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10105         if (!msg)
10106                 return;
10107
10108         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CH_SWITCH_NOTIFY);
10109         if (!hdr) {
10110                 nlmsg_free(msg);
10111                 return;
10112         }
10113
10114         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
10115                 goto nla_put_failure;
10116
10117         if (nl80211_send_chandef(msg, chandef))
10118                 goto nla_put_failure;
10119
10120         genlmsg_end(msg, hdr);
10121
10122         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10123                                 nl80211_mlme_mcgrp.id, gfp);
10124         return;
10125
10126  nla_put_failure:
10127         genlmsg_cancel(msg, hdr);
10128         nlmsg_free(msg);
10129 }
10130
10131 void cfg80211_ch_switch_notify(struct net_device *dev,
10132                                struct cfg80211_chan_def *chandef)
10133 {
10134         struct wireless_dev *wdev = dev->ieee80211_ptr;
10135         struct wiphy *wiphy = wdev->wiphy;
10136         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10137
10138         trace_cfg80211_ch_switch_notify(dev, chandef);
10139
10140         wdev_lock(wdev);
10141
10142         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
10143                     wdev->iftype != NL80211_IFTYPE_P2P_GO))
10144                 goto out;
10145
10146         wdev->channel = chandef->chan;
10147         nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL);
10148 out:
10149         wdev_unlock(wdev);
10150         return;
10151 }
10152 EXPORT_SYMBOL(cfg80211_ch_switch_notify);
10153
10154 void cfg80211_cqm_txe_notify(struct net_device *dev,
10155                              const u8 *peer, u32 num_packets,
10156                              u32 rate, u32 intvl, gfp_t gfp)
10157 {
10158         struct wireless_dev *wdev = dev->ieee80211_ptr;
10159         struct wiphy *wiphy = wdev->wiphy;
10160         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10161         struct sk_buff *msg;
10162         struct nlattr *pinfoattr;
10163         void *hdr;
10164
10165         msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
10166         if (!msg)
10167                 return;
10168
10169         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
10170         if (!hdr) {
10171                 nlmsg_free(msg);
10172                 return;
10173         }
10174
10175         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10176             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
10177             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer))
10178                 goto nla_put_failure;
10179
10180         pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
10181         if (!pinfoattr)
10182                 goto nla_put_failure;
10183
10184         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets))
10185                 goto nla_put_failure;
10186
10187         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate))
10188                 goto nla_put_failure;
10189
10190         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl))
10191                 goto nla_put_failure;
10192
10193         nla_nest_end(msg, pinfoattr);
10194
10195         genlmsg_end(msg, hdr);
10196
10197         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10198                                 nl80211_mlme_mcgrp.id, gfp);
10199         return;
10200
10201  nla_put_failure:
10202         genlmsg_cancel(msg, hdr);
10203         nlmsg_free(msg);
10204 }
10205 EXPORT_SYMBOL(cfg80211_cqm_txe_notify);
10206
10207 void
10208 nl80211_radar_notify(struct cfg80211_registered_device *rdev,
10209                      struct cfg80211_chan_def *chandef,
10210                      enum nl80211_radar_event event,
10211                      struct net_device *netdev, gfp_t gfp)
10212 {
10213         struct sk_buff *msg;
10214         void *hdr;
10215
10216         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10217         if (!msg)
10218                 return;
10219
10220         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT);
10221         if (!hdr) {
10222                 nlmsg_free(msg);
10223                 return;
10224         }
10225
10226         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
10227                 goto nla_put_failure;
10228
10229         /* NOP and radar events don't need a netdev parameter */
10230         if (netdev) {
10231                 struct wireless_dev *wdev = netdev->ieee80211_ptr;
10232
10233                 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10234                     nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
10235                         goto nla_put_failure;
10236         }
10237
10238         if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event))
10239                 goto nla_put_failure;
10240
10241         if (nl80211_send_chandef(msg, chandef))
10242                 goto nla_put_failure;
10243
10244         if (genlmsg_end(msg, hdr) < 0) {
10245                 nlmsg_free(msg);
10246                 return;
10247         }
10248
10249         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10250                                 nl80211_mlme_mcgrp.id, gfp);
10251         return;
10252
10253  nla_put_failure:
10254         genlmsg_cancel(msg, hdr);
10255         nlmsg_free(msg);
10256 }
10257
10258 void cfg80211_cqm_pktloss_notify(struct net_device *dev,
10259                                  const u8 *peer, u32 num_packets, gfp_t gfp)
10260 {
10261         struct wireless_dev *wdev = dev->ieee80211_ptr;
10262         struct wiphy *wiphy = wdev->wiphy;
10263         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10264         struct sk_buff *msg;
10265         struct nlattr *pinfoattr;
10266         void *hdr;
10267
10268         trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets);
10269
10270         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10271         if (!msg)
10272                 return;
10273
10274         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
10275         if (!hdr) {
10276                 nlmsg_free(msg);
10277                 return;
10278         }
10279
10280         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10281             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
10282             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer))
10283                 goto nla_put_failure;
10284
10285         pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
10286         if (!pinfoattr)
10287                 goto nla_put_failure;
10288
10289         if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets))
10290                 goto nla_put_failure;
10291
10292         nla_nest_end(msg, pinfoattr);
10293
10294         genlmsg_end(msg, hdr);
10295
10296         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10297                                 nl80211_mlme_mcgrp.id, gfp);
10298         return;
10299
10300  nla_put_failure:
10301         genlmsg_cancel(msg, hdr);
10302         nlmsg_free(msg);
10303 }
10304 EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify);
10305
10306 void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
10307                            u64 cookie, bool acked, gfp_t gfp)
10308 {
10309         struct wireless_dev *wdev = dev->ieee80211_ptr;
10310         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
10311         struct sk_buff *msg;
10312         void *hdr;
10313         int err;
10314
10315         trace_cfg80211_probe_status(dev, addr, cookie, acked);
10316
10317         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10318
10319         if (!msg)
10320                 return;
10321
10322         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT);
10323         if (!hdr) {
10324                 nlmsg_free(msg);
10325                 return;
10326         }
10327
10328         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10329             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
10330             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
10331             nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) ||
10332             (acked && nla_put_flag(msg, NL80211_ATTR_ACK)))
10333                 goto nla_put_failure;
10334
10335         err = genlmsg_end(msg, hdr);
10336         if (err < 0) {
10337                 nlmsg_free(msg);
10338                 return;
10339         }
10340
10341         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10342                                 nl80211_mlme_mcgrp.id, gfp);
10343         return;
10344
10345  nla_put_failure:
10346         genlmsg_cancel(msg, hdr);
10347         nlmsg_free(msg);
10348 }
10349 EXPORT_SYMBOL(cfg80211_probe_status);
10350
10351 void cfg80211_report_obss_beacon(struct wiphy *wiphy,
10352                                  const u8 *frame, size_t len,
10353                                  int freq, int sig_dbm)
10354 {
10355         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10356         struct sk_buff *msg;
10357         void *hdr;
10358         struct cfg80211_beacon_registration *reg;
10359
10360         trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm);
10361
10362         spin_lock_bh(&rdev->beacon_registrations_lock);
10363         list_for_each_entry(reg, &rdev->beacon_registrations, list) {
10364                 msg = nlmsg_new(len + 100, GFP_ATOMIC);
10365                 if (!msg) {
10366                         spin_unlock_bh(&rdev->beacon_registrations_lock);
10367                         return;
10368                 }
10369
10370                 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
10371                 if (!hdr)
10372                         goto nla_put_failure;
10373
10374                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10375                     (freq &&
10376                      nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq)) ||
10377                     (sig_dbm &&
10378                      nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
10379                     nla_put(msg, NL80211_ATTR_FRAME, len, frame))
10380                         goto nla_put_failure;
10381
10382                 genlmsg_end(msg, hdr);
10383
10384                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid);
10385         }
10386         spin_unlock_bh(&rdev->beacon_registrations_lock);
10387         return;
10388
10389  nla_put_failure:
10390         spin_unlock_bh(&rdev->beacon_registrations_lock);
10391         if (hdr)
10392                 genlmsg_cancel(msg, hdr);
10393         nlmsg_free(msg);
10394 }
10395 EXPORT_SYMBOL(cfg80211_report_obss_beacon);
10396
10397 #ifdef CONFIG_PM
10398 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev,
10399                                    struct cfg80211_wowlan_wakeup *wakeup,
10400                                    gfp_t gfp)
10401 {
10402         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
10403         struct sk_buff *msg;
10404         void *hdr;
10405         int err, size = 200;
10406
10407         trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup);
10408
10409         if (wakeup)
10410                 size += wakeup->packet_present_len;
10411
10412         msg = nlmsg_new(size, gfp);
10413         if (!msg)
10414                 return;
10415
10416         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN);
10417         if (!hdr)
10418                 goto free_msg;
10419
10420         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10421             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
10422                 goto free_msg;
10423
10424         if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
10425                                         wdev->netdev->ifindex))
10426                 goto free_msg;
10427
10428         if (wakeup) {
10429                 struct nlattr *reasons;
10430
10431                 reasons = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
10432
10433                 if (wakeup->disconnect &&
10434                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT))
10435                         goto free_msg;
10436                 if (wakeup->magic_pkt &&
10437                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT))
10438                         goto free_msg;
10439                 if (wakeup->gtk_rekey_failure &&
10440                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE))
10441                         goto free_msg;
10442                 if (wakeup->eap_identity_req &&
10443                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST))
10444                         goto free_msg;
10445                 if (wakeup->four_way_handshake &&
10446                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE))
10447                         goto free_msg;
10448                 if (wakeup->rfkill_release &&
10449                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))
10450                         goto free_msg;
10451
10452                 if (wakeup->pattern_idx >= 0 &&
10453                     nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
10454                                 wakeup->pattern_idx))
10455                         goto free_msg;
10456
10457                 if (wakeup->tcp_match)
10458                         nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH);
10459
10460                 if (wakeup->tcp_connlost)
10461                         nla_put_flag(msg,
10462                                      NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST);
10463
10464                 if (wakeup->tcp_nomoretokens)
10465                         nla_put_flag(msg,
10466                                 NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS);
10467
10468                 if (wakeup->packet) {
10469                         u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211;
10470                         u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN;
10471
10472                         if (!wakeup->packet_80211) {
10473                                 pkt_attr =
10474                                         NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023;
10475                                 len_attr =
10476                                         NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN;
10477                         }
10478
10479                         if (wakeup->packet_len &&
10480                             nla_put_u32(msg, len_attr, wakeup->packet_len))
10481                                 goto free_msg;
10482
10483                         if (nla_put(msg, pkt_attr, wakeup->packet_present_len,
10484                                     wakeup->packet))
10485                                 goto free_msg;
10486                 }
10487
10488                 nla_nest_end(msg, reasons);
10489         }
10490
10491         err = genlmsg_end(msg, hdr);
10492         if (err < 0)
10493                 goto free_msg;
10494
10495         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10496                                 nl80211_mlme_mcgrp.id, gfp);
10497         return;
10498
10499  free_msg:
10500         nlmsg_free(msg);
10501 }
10502 EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup);
10503 #endif
10504
10505 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer,
10506                                 enum nl80211_tdls_operation oper,
10507                                 u16 reason_code, gfp_t gfp)
10508 {
10509         struct wireless_dev *wdev = dev->ieee80211_ptr;
10510         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
10511         struct sk_buff *msg;
10512         void *hdr;
10513         int err;
10514
10515         trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper,
10516                                          reason_code);
10517
10518         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10519         if (!msg)
10520                 return;
10521
10522         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER);
10523         if (!hdr) {
10524                 nlmsg_free(msg);
10525                 return;
10526         }
10527
10528         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10529             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
10530             nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) ||
10531             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) ||
10532             (reason_code > 0 &&
10533              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code)))
10534                 goto nla_put_failure;
10535
10536         err = genlmsg_end(msg, hdr);
10537         if (err < 0) {
10538                 nlmsg_free(msg);
10539                 return;
10540         }
10541
10542         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10543                                 nl80211_mlme_mcgrp.id, gfp);
10544         return;
10545
10546  nla_put_failure:
10547         genlmsg_cancel(msg, hdr);
10548         nlmsg_free(msg);
10549 }
10550 EXPORT_SYMBOL(cfg80211_tdls_oper_request);
10551
10552 static int nl80211_netlink_notify(struct notifier_block * nb,
10553                                   unsigned long state,
10554                                   void *_notify)
10555 {
10556         struct netlink_notify *notify = _notify;
10557         struct cfg80211_registered_device *rdev;
10558         struct wireless_dev *wdev;
10559         struct cfg80211_beacon_registration *reg, *tmp;
10560
10561         if (state != NETLINK_URELEASE)
10562                 return NOTIFY_DONE;
10563
10564         rcu_read_lock();
10565
10566         list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
10567                 list_for_each_entry_rcu(wdev, &rdev->wdev_list, list)
10568                         cfg80211_mlme_unregister_socket(wdev, notify->portid);
10569
10570                 spin_lock_bh(&rdev->beacon_registrations_lock);
10571                 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations,
10572                                          list) {
10573                         if (reg->nlportid == notify->portid) {
10574                                 list_del(&reg->list);
10575                                 kfree(reg);
10576                                 break;
10577                         }
10578                 }
10579                 spin_unlock_bh(&rdev->beacon_registrations_lock);
10580         }
10581
10582         rcu_read_unlock();
10583
10584         return NOTIFY_DONE;
10585 }
10586
10587 static struct notifier_block nl80211_netlink_notifier = {
10588         .notifier_call = nl80211_netlink_notify,
10589 };
10590
10591 void cfg80211_ft_event(struct net_device *netdev,
10592                        struct cfg80211_ft_event_params *ft_event)
10593 {
10594         struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
10595         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10596         struct sk_buff *msg;
10597         void *hdr;
10598         int err;
10599
10600         trace_cfg80211_ft_event(wiphy, netdev, ft_event);
10601
10602         if (!ft_event->target_ap)
10603                 return;
10604
10605         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10606         if (!msg)
10607                 return;
10608
10609         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT);
10610         if (!hdr) {
10611                 nlmsg_free(msg);
10612                 return;
10613         }
10614
10615         nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
10616         nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
10617         nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap);
10618         if (ft_event->ies)
10619                 nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies);
10620         if (ft_event->ric_ies)
10621                 nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len,
10622                         ft_event->ric_ies);
10623
10624         err = genlmsg_end(msg, hdr);
10625         if (err < 0) {
10626                 nlmsg_free(msg);
10627                 return;
10628         }
10629
10630         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10631                                 nl80211_mlme_mcgrp.id, GFP_KERNEL);
10632 }
10633 EXPORT_SYMBOL(cfg80211_ft_event);
10634
10635 /* initialisation/exit functions */
10636
10637 int nl80211_init(void)
10638 {
10639         int err;
10640
10641         err = genl_register_family_with_ops(&nl80211_fam,
10642                 nl80211_ops, ARRAY_SIZE(nl80211_ops));
10643         if (err)
10644                 return err;
10645
10646         err = genl_register_mc_group(&nl80211_fam, &nl80211_config_mcgrp);
10647         if (err)
10648                 goto err_out;
10649
10650         err = genl_register_mc_group(&nl80211_fam, &nl80211_scan_mcgrp);
10651         if (err)
10652                 goto err_out;
10653
10654         err = genl_register_mc_group(&nl80211_fam, &nl80211_regulatory_mcgrp);
10655         if (err)
10656                 goto err_out;
10657
10658         err = genl_register_mc_group(&nl80211_fam, &nl80211_mlme_mcgrp);
10659         if (err)
10660                 goto err_out;
10661
10662 #ifdef CONFIG_NL80211_TESTMODE
10663         err = genl_register_mc_group(&nl80211_fam, &nl80211_testmode_mcgrp);
10664         if (err)
10665                 goto err_out;
10666 #endif
10667
10668         err = netlink_register_notifier(&nl80211_netlink_notifier);
10669         if (err)
10670                 goto err_out;
10671
10672         return 0;
10673  err_out:
10674         genl_unregister_family(&nl80211_fam);
10675         return err;
10676 }
10677
10678 void nl80211_exit(void)
10679 {
10680         netlink_unregister_notifier(&nl80211_netlink_notifier);
10681         genl_unregister_family(&nl80211_fam);
10682 }