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_GENL_NAME,      /* 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_RTNL();
  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                 list_for_each_entry(wdev, &rdev->wdev_list, list) {
  84                         if (have_ifidx && wdev->netdev &&
  85                             wdev->netdev->ifindex == ifidx) {
  86                                 result = wdev;
  87                                 break;
  88                         }
  89                         if (have_wdev_id && wdev->identifier == (u32)wdev_id) {
  90                                 result = wdev;
  91                                 break;
  92                         }
  93                 }
  94
  95                 if (result)
  96                         break;
  97         }
  98
  99         if (result)
 100                 return result;
 101         return ERR_PTR(-ENODEV);
 102 }
 103
 104 static struct cfg80211_registered_device *
 105 __cfg80211_rdev_from_attrs(struct net *netns, struct nlattr **attrs)
 106 {
 107         struct cfg80211_registered_device *rdev = NULL, *tmp;
 108         struct net_device *netdev;
 109
 110         ASSERT_RTNL();
 111
 112         if (!attrs[NL80211_ATTR_WIPHY] &&
 113             !attrs[NL80211_ATTR_IFINDEX] &&
 114             !attrs[NL80211_ATTR_WDEV])
 115                 return ERR_PTR(-EINVAL);
 116
 117         if (attrs[NL80211_ATTR_WIPHY])
 118                 rdev = cfg80211_rdev_by_wiphy_idx(
 119                                 nla_get_u32(attrs[NL80211_ATTR_WIPHY]));
 120
 121         if (attrs[NL80211_ATTR_WDEV]) {
 122                 u64 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
 123                 struct wireless_dev *wdev;
 124                 bool found = false;
 125
 126                 tmp = cfg80211_rdev_by_wiphy_idx(wdev_id >> 32);
 127                 if (tmp) {
 128                         /* make sure wdev exists */
 129                         list_for_each_entry(wdev, &tmp->wdev_list, list) {
 130                                 if (wdev->identifier != (u32)wdev_id)
 131                                         continue;
 132                                 found = true;
 133                                 break;
 134                         }
 135
 136                         if (!found)
 137                                 tmp = NULL;
 138
 139                         if (rdev && tmp != rdev)
 140                                 return ERR_PTR(-EINVAL);
 141                         rdev = tmp;
 142                 }
 143         }
 144
 145         if (attrs[NL80211_ATTR_IFINDEX]) {
 146                 int ifindex = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
 147                 netdev = dev_get_by_index(netns, ifindex);
 148                 if (netdev) {
 149                         if (netdev->ieee80211_ptr)
 150                                 tmp = wiphy_to_dev(
 151                                                 netdev->ieee80211_ptr->wiphy);
 152                         else
 153                                 tmp = NULL;
 154
 155                         dev_put(netdev);
 156
 157                         /* not wireless device -- return error */
 158                         if (!tmp)
 159                                 return ERR_PTR(-EINVAL);
 160
 161                         /* mismatch -- return error */
 162                         if (rdev && tmp != rdev)
 163                                 return ERR_PTR(-EINVAL);
 164
 165                         rdev = tmp;
 166                 }
 167         }
 168
 169         if (!rdev)
 170                 return ERR_PTR(-ENODEV);
 171
 172         if (netns != wiphy_net(&rdev->wiphy))
 173                 return ERR_PTR(-ENODEV);
 174
 175         return rdev;
 176 }
 177
 178 /*
 179  * This function returns a pointer to the driver
 180  * that the genl_info item that is passed refers to.
 181  *
 182  * The result of this can be a PTR_ERR and hence must
 183  * be checked with IS_ERR() for errors.
 184  */
 185 static struct cfg80211_registered_device *
 186 cfg80211_get_dev_from_info(struct net *netns, struct genl_info *info)
 187 {
 188         return __cfg80211_rdev_from_attrs(netns, info->attrs);
 189 }
 190
 191 /* policy for the attributes */
 192 static const struct nla_policy nl80211_policy[NL80211_ATTR_MAX+1] = {
 193         [NL80211_ATTR_WIPHY] = { .type = NLA_U32 },
 194         [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING,
 195                                       .len = 20-1 },
 196         [NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED },
 197
 198         [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 },
 199         [NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 },
 200         [NL80211_ATTR_CHANNEL_WIDTH] = { .type = NLA_U32 },
 201         [NL80211_ATTR_CENTER_FREQ1] = { .type = NLA_U32 },
 202         [NL80211_ATTR_CENTER_FREQ2] = { .type = NLA_U32 },
 203
 204         [NL80211_ATTR_WIPHY_RETRY_SHORT] = { .type = NLA_U8 },
 205         [NL80211_ATTR_WIPHY_RETRY_LONG] = { .type = NLA_U8 },
 206         [NL80211_ATTR_WIPHY_FRAG_THRESHOLD] = { .type = NLA_U32 },
 207         [NL80211_ATTR_WIPHY_RTS_THRESHOLD] = { .type = NLA_U32 },
 208         [NL80211_ATTR_WIPHY_COVERAGE_CLASS] = { .type = NLA_U8 },
 209
 210         [NL80211_ATTR_IFTYPE] = { .type = NLA_U32 },
 211         [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 },
 212         [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 },
 213
 214         [NL80211_ATTR_MAC] = { .len = ETH_ALEN },
 215         [NL80211_ATTR_PREV_BSSID] = { .len = ETH_ALEN },
 216
 217         [NL80211_ATTR_KEY] = { .type = NLA_NESTED, },
 218         [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY,
 219                                     .len = WLAN_MAX_KEY_LEN },
 220         [NL80211_ATTR_KEY_IDX] = { .type = NLA_U8 },
 221         [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 },
 222         [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG },
 223         [NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
 224         [NL80211_ATTR_KEY_TYPE] = { .type = NLA_U32 },
 225
 226         [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 },
 227         [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 },
 228         [NL80211_ATTR_BEACON_HEAD] = { .type = NLA_BINARY,
 229                                        .len = IEEE80211_MAX_DATA_LEN },
 230         [NL80211_ATTR_BEACON_TAIL] = { .type = NLA_BINARY,
 231                                        .len = IEEE80211_MAX_DATA_LEN },
 232         [NL80211_ATTR_STA_AID] = { .type = NLA_U16 },
 233         [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED },
 234         [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 },
 235         [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY,
 236                                                .len = NL80211_MAX_SUPP_RATES },
 237         [NL80211_ATTR_STA_PLINK_ACTION] = { .type = NLA_U8 },
 238         [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 },
 239         [NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ },
 240         [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY,
 241                                    .len = IEEE80211_MAX_MESH_ID_LEN },
 242         [NL80211_ATTR_MPATH_NEXT_HOP] = { .type = NLA_U32 },
 243
 244         [NL80211_ATTR_REG_ALPHA2] = { .type = NLA_STRING, .len = 2 },
 245         [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED },
 246
 247         [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 },
 248         [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 },
 249         [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 },
 250         [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY,
 251                                            .len = NL80211_MAX_SUPP_RATES },
 252         [NL80211_ATTR_BSS_HT_OPMODE] = { .type = NLA_U16 },
 253
 254         [NL80211_ATTR_MESH_CONFIG] = { .type = NLA_NESTED },
 255         [NL80211_ATTR_SUPPORT_MESH_AUTH] = { .type = NLA_FLAG },
 256
 257         [NL80211_ATTR_HT_CAPABILITY] = { .len = NL80211_HT_CAPABILITY_LEN },
 258
 259         [NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 },
 260         [NL80211_ATTR_IE] = { .type = NLA_BINARY,
 261                               .len = IEEE80211_MAX_DATA_LEN },
 262         [NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED },
 263         [NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED },
 264
 265         [NL80211_ATTR_SSID] = { .type = NLA_BINARY,
 266                                 .len = IEEE80211_MAX_SSID_LEN },
 267         [NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 },
 268         [NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 },
 269         [NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG },
 270         [NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG },
 271         [NL80211_ATTR_USE_MFP] = { .type = NLA_U32 },
 272         [NL80211_ATTR_STA_FLAGS2] = {
 273                 .len = sizeof(struct nl80211_sta_flag_update),
 274         },
 275         [NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG },
 276         [NL80211_ATTR_CONTROL_PORT_ETHERTYPE] = { .type = NLA_U16 },
 277         [NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT] = { .type = NLA_FLAG },
 278         [NL80211_ATTR_PRIVACY] = { .type = NLA_FLAG },
 279         [NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 },
 280         [NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 },
 281         [NL80211_ATTR_PID] = { .type = NLA_U32 },
 282         [NL80211_ATTR_4ADDR] = { .type = NLA_U8 },
 283         [NL80211_ATTR_PMKID] = { .type = NLA_BINARY,
 284                                  .len = WLAN_PMKID_LEN },
 285         [NL80211_ATTR_DURATION] = { .type = NLA_U32 },
 286         [NL80211_ATTR_COOKIE] = { .type = NLA_U64 },
 287         [NL80211_ATTR_TX_RATES] = { .type = NLA_NESTED },
 288         [NL80211_ATTR_FRAME] = { .type = NLA_BINARY,
 289                                  .len = IEEE80211_MAX_DATA_LEN },
 290         [NL80211_ATTR_FRAME_MATCH] = { .type = NLA_BINARY, },
 291         [NL80211_ATTR_PS_STATE] = { .type = NLA_U32 },
 292         [NL80211_ATTR_CQM] = { .type = NLA_NESTED, },
 293         [NL80211_ATTR_LOCAL_STATE_CHANGE] = { .type = NLA_FLAG },
 294         [NL80211_ATTR_AP_ISOLATE] = { .type = NLA_U8 },
 295         [NL80211_ATTR_WIPHY_TX_POWER_SETTING] = { .type = NLA_U32 },
 296         [NL80211_ATTR_WIPHY_TX_POWER_LEVEL] = { .type = NLA_U32 },
 297         [NL80211_ATTR_FRAME_TYPE] = { .type = NLA_U16 },
 298         [NL80211_ATTR_WIPHY_ANTENNA_TX] = { .type = NLA_U32 },
 299         [NL80211_ATTR_WIPHY_ANTENNA_RX] = { .type = NLA_U32 },
 300         [NL80211_ATTR_MCAST_RATE] = { .type = NLA_U32 },
 301         [NL80211_ATTR_OFFCHANNEL_TX_OK] = { .type = NLA_FLAG },
 302         [NL80211_ATTR_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
 303         [NL80211_ATTR_WOWLAN_TRIGGERS] = { .type = NLA_NESTED },
 304         [NL80211_ATTR_STA_PLINK_STATE] = { .type = NLA_U8 },
 305         [NL80211_ATTR_SCHED_SCAN_INTERVAL] = { .type = NLA_U32 },
 306         [NL80211_ATTR_REKEY_DATA] = { .type = NLA_NESTED },
 307         [NL80211_ATTR_SCAN_SUPP_RATES] = { .type = NLA_NESTED },
 308         [NL80211_ATTR_HIDDEN_SSID] = { .type = NLA_U32 },
 309         [NL80211_ATTR_IE_PROBE_RESP] = { .type = NLA_BINARY,
 310                                          .len = IEEE80211_MAX_DATA_LEN },
 311         [NL80211_ATTR_IE_ASSOC_RESP] = { .type = NLA_BINARY,
 312                                          .len = IEEE80211_MAX_DATA_LEN },
 313         [NL80211_ATTR_ROAM_SUPPORT] = { .type = NLA_FLAG },
 314         [NL80211_ATTR_SCHED_SCAN_MATCH] = { .type = NLA_NESTED },
 315         [NL80211_ATTR_TX_NO_CCK_RATE] = { .type = NLA_FLAG },
 316         [NL80211_ATTR_TDLS_ACTION] = { .type = NLA_U8 },
 317         [NL80211_ATTR_TDLS_DIALOG_TOKEN] = { .type = NLA_U8 },
 318         [NL80211_ATTR_TDLS_OPERATION] = { .type = NLA_U8 },
 319         [NL80211_ATTR_TDLS_SUPPORT] = { .type = NLA_FLAG },
 320         [NL80211_ATTR_TDLS_EXTERNAL_SETUP] = { .type = NLA_FLAG },
 321         [NL80211_ATTR_DONT_WAIT_FOR_ACK] = { .type = NLA_FLAG },
 322         [NL80211_ATTR_PROBE_RESP] = { .type = NLA_BINARY,
 323                                       .len = IEEE80211_MAX_DATA_LEN },
 324         [NL80211_ATTR_DFS_REGION] = { .type = NLA_U8 },
 325         [NL80211_ATTR_DISABLE_HT] = { .type = NLA_FLAG },
 326         [NL80211_ATTR_HT_CAPABILITY_MASK] = {
 327                 .len = NL80211_HT_CAPABILITY_LEN
 328         },
 329         [NL80211_ATTR_NOACK_MAP] = { .type = NLA_U16 },
 330         [NL80211_ATTR_INACTIVITY_TIMEOUT] = { .type = NLA_U16 },
 331         [NL80211_ATTR_BG_SCAN_PERIOD] = { .type = NLA_U16 },
 332         [NL80211_ATTR_WDEV] = { .type = NLA_U64 },
 333         [NL80211_ATTR_USER_REG_HINT_TYPE] = { .type = NLA_U32 },
 334         [NL80211_ATTR_SAE_DATA] = { .type = NLA_BINARY, },
 335         [NL80211_ATTR_VHT_CAPABILITY] = { .len = NL80211_VHT_CAPABILITY_LEN },
 336         [NL80211_ATTR_SCAN_FLAGS] = { .type = NLA_U32 },
 337         [NL80211_ATTR_P2P_CTWINDOW] = { .type = NLA_U8 },
 338         [NL80211_ATTR_P2P_OPPPS] = { .type = NLA_U8 },
 339         [NL80211_ATTR_ACL_POLICY] = {. type = NLA_U32 },
 340         [NL80211_ATTR_MAC_ADDRS] = { .type = NLA_NESTED },
 341         [NL80211_ATTR_STA_CAPABILITY] = { .type = NLA_U16 },
 342         [NL80211_ATTR_STA_EXT_CAPABILITY] = { .type = NLA_BINARY, },
 343         [NL80211_ATTR_SPLIT_WIPHY_DUMP] = { .type = NLA_FLAG, },
 344         [NL80211_ATTR_DISABLE_VHT] = { .type = NLA_FLAG },
 345         [NL80211_ATTR_VHT_CAPABILITY_MASK] = {
 346                 .len = NL80211_VHT_CAPABILITY_LEN,
 347         },
 348         [NL80211_ATTR_MDID] = { .type = NLA_U16 },
 349         [NL80211_ATTR_IE_RIC] = { .type = NLA_BINARY,
 350                                   .len = IEEE80211_MAX_DATA_LEN },
 351         [NL80211_ATTR_PEER_AID] = { .type = NLA_U16 },
 352 };
 353
 354 /* policy for the key attributes */
 355 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = {
 356         [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN },
 357         [NL80211_KEY_IDX] = { .type = NLA_U8 },
 358         [NL80211_KEY_CIPHER] = { .type = NLA_U32 },
 359         [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
 360         [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG },
 361         [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG },
 362         [NL80211_KEY_TYPE] = { .type = NLA_U32 },
 363         [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
 364 };
 365
 366 /* policy for the key default flags */
 367 static const struct nla_policy
 368 nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = {
 369         [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG },
 370         [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG },
 371 };
 372
 373 /* policy for WoWLAN attributes */
 374 static const struct nla_policy
 375 nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = {
 376         [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG },
 377         [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG },
 378         [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG },
 379         [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED },
 380         [NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG },
 381         [NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG },
 382         [NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG },
 383         [NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG },
 384         [NL80211_WOWLAN_TRIG_TCP_CONNECTION] = { .type = NLA_NESTED },
 385 };
 386
 387 static const struct nla_policy
 388 nl80211_wowlan_tcp_policy[NUM_NL80211_WOWLAN_TCP] = {
 389         [NL80211_WOWLAN_TCP_SRC_IPV4] = { .type = NLA_U32 },
 390         [NL80211_WOWLAN_TCP_DST_IPV4] = { .type = NLA_U32 },
 391         [NL80211_WOWLAN_TCP_DST_MAC] = { .len = ETH_ALEN },
 392         [NL80211_WOWLAN_TCP_SRC_PORT] = { .type = NLA_U16 },
 393         [NL80211_WOWLAN_TCP_DST_PORT] = { .type = NLA_U16 },
 394         [NL80211_WOWLAN_TCP_DATA_PAYLOAD] = { .len = 1 },
 395         [NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ] = {
 396                 .len = sizeof(struct nl80211_wowlan_tcp_data_seq)
 397         },
 398         [NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN] = {
 399                 .len = sizeof(struct nl80211_wowlan_tcp_data_token)
 400         },
 401         [NL80211_WOWLAN_TCP_DATA_INTERVAL] = { .type = NLA_U32 },
 402         [NL80211_WOWLAN_TCP_WAKE_PAYLOAD] = { .len = 1 },
 403         [NL80211_WOWLAN_TCP_WAKE_MASK] = { .len = 1 },
 404 };
 405
 406 /* policy for coalesce rule attributes */
 407 static const struct nla_policy
 408 nl80211_coalesce_policy[NUM_NL80211_ATTR_COALESCE_RULE] = {
 409         [NL80211_ATTR_COALESCE_RULE_DELAY] = { .type = NLA_U32 },
 410         [NL80211_ATTR_COALESCE_RULE_CONDITION] = { .type = NLA_U32 },
 411         [NL80211_ATTR_COALESCE_RULE_PKT_PATTERN] = { .type = NLA_NESTED },
 412 };
 413
 414 /* policy for GTK rekey offload attributes */
 415 static const struct nla_policy
 416 nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = {
 417         [NL80211_REKEY_DATA_KEK] = { .len = NL80211_KEK_LEN },
 418         [NL80211_REKEY_DATA_KCK] = { .len = NL80211_KCK_LEN },
 419         [NL80211_REKEY_DATA_REPLAY_CTR] = { .len = NL80211_REPLAY_CTR_LEN },
 420 };
 421
 422 static const struct nla_policy
 423 nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = {
 424         [NL80211_SCHED_SCAN_MATCH_ATTR_SSID] = { .type = NLA_BINARY,
 425                                                  .len = IEEE80211_MAX_SSID_LEN },
 426         [NL80211_SCHED_SCAN_MATCH_ATTR_RSSI] = { .type = NLA_U32 },
 427 };
 428
 429 static int nl80211_prepare_wdev_dump(struct sk_buff *skb,
 430                                      struct netlink_callback *cb,
 431                                      struct cfg80211_registered_device **rdev,
 432                                      struct wireless_dev **wdev)
 433 {
 434         int err;
 435
 436         rtnl_lock();
 437
 438         if (!cb->args[0]) {
 439                 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
 440                                   nl80211_fam.attrbuf, nl80211_fam.maxattr,
 441                                   nl80211_policy);
 442                 if (err)
 443                         goto out_unlock;
 444
 445                 *wdev = __cfg80211_wdev_from_attrs(sock_net(skb->sk),
 446                                                    nl80211_fam.attrbuf);
 447                 if (IS_ERR(*wdev)) {
 448                         err = PTR_ERR(*wdev);
 449                         goto out_unlock;
 450                 }
 451                 *rdev = wiphy_to_dev((*wdev)->wiphy);
 452                 cb->args[0] = (*rdev)->wiphy_idx;
 453                 cb->args[1] = (*wdev)->identifier;
 454         } else {
 455                 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0]);
 456                 struct wireless_dev *tmp;
 457
 458                 if (!wiphy) {
 459                         err = -ENODEV;
 460                         goto out_unlock;
 461                 }
 462                 *rdev = wiphy_to_dev(wiphy);
 463                 *wdev = NULL;
 464
 465                 list_for_each_entry(tmp, &(*rdev)->wdev_list, list) {
 466                         if (tmp->identifier == cb->args[1]) {
 467                                 *wdev = tmp;
 468                                 break;
 469                         }
 470                 }
 471
 472                 if (!*wdev) {
 473                         err = -ENODEV;
 474                         goto out_unlock;
 475                 }
 476         }
 477
 478         return 0;
 479  out_unlock:
 480         rtnl_unlock();
 481         return err;
 482 }
 483
 484 static void nl80211_finish_wdev_dump(struct cfg80211_registered_device *rdev)
 485 {
 486         rtnl_unlock();
 487 }
 488
 489 /* IE validation */
 490 static bool is_valid_ie_attr(const struct nlattr *attr)
 491 {
 492         const u8 *pos;
 493         int len;
 494
 495         if (!attr)
 496                 return true;
 497
 498         pos = nla_data(attr);
 499         len = nla_len(attr);
 500
 501         while (len) {
 502                 u8 elemlen;
 503
 504                 if (len < 2)
 505                         return false;
 506                 len -= 2;
 507
 508                 elemlen = pos[1];
 509                 if (elemlen > len)
 510                         return false;
 511
 512                 len -= elemlen;
 513                 pos += 2 + elemlen;
 514         }
 515
 516         return true;
 517 }
 518
 519 /* message building helper */
 520 static inline void *nl80211hdr_put(struct sk_buff *skb, u32 portid, u32 seq,
 521                                    int flags, u8 cmd)
 522 {
 523         /* since there is no private header just add the generic one */
 524         return genlmsg_put(skb, portid, seq, &nl80211_fam, flags, cmd);
 525 }
 526
 527 static int nl80211_msg_put_channel(struct sk_buff *msg,
 528                                    struct ieee80211_channel *chan,
 529                                    bool large)
 530 {
 531         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ,
 532                         chan->center_freq))
 533                 goto nla_put_failure;
 534
 535         if ((chan->flags & IEEE80211_CHAN_DISABLED) &&
 536             nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED))
 537                 goto nla_put_failure;
 538         if ((chan->flags & IEEE80211_CHAN_PASSIVE_SCAN) &&
 539             nla_put_flag(msg, NL80211_FREQUENCY_ATTR_PASSIVE_SCAN))
 540                 goto nla_put_failure;
 541         if ((chan->flags & IEEE80211_CHAN_NO_IBSS) &&
 542             nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IBSS))
 543                 goto nla_put_failure;
 544         if (chan->flags & IEEE80211_CHAN_RADAR) {
 545                 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR))
 546                         goto nla_put_failure;
 547                 if (large) {
 548                         u32 time;
 549
 550                         time = elapsed_jiffies_msecs(chan->dfs_state_entered);
 551
 552                         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_STATE,
 553                                         chan->dfs_state))
 554                                 goto nla_put_failure;
 555                         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_TIME,
 556                                         time))
 557                                 goto nla_put_failure;
 558                 }
 559         }
 560
 561         if (large) {
 562                 if ((chan->flags & IEEE80211_CHAN_NO_HT40MINUS) &&
 563                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_MINUS))
 564                         goto nla_put_failure;
 565                 if ((chan->flags & IEEE80211_CHAN_NO_HT40PLUS) &&
 566                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_PLUS))
 567                         goto nla_put_failure;
 568                 if ((chan->flags & IEEE80211_CHAN_NO_80MHZ) &&
 569                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_80MHZ))
 570                         goto nla_put_failure;
 571                 if ((chan->flags & IEEE80211_CHAN_NO_160MHZ) &&
 572                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_160MHZ))
 573                         goto nla_put_failure;
 574         }
 575
 576         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
 577                         DBM_TO_MBM(chan->max_power)))
 578                 goto nla_put_failure;
 579
 580         return 0;
 581
 582  nla_put_failure:
 583         return -ENOBUFS;
 584 }
 585
 586 /* netlink command implementations */
 587
 588 struct key_parse {
 589         struct key_params p;
 590         int idx;
 591         int type;
 592         bool def, defmgmt;
 593         bool def_uni, def_multi;
 594 };
 595
 596 static int nl80211_parse_key_new(struct nlattr *key, struct key_parse *k)
 597 {
 598         struct nlattr *tb[NL80211_KEY_MAX + 1];
 599         int err = nla_parse_nested(tb, NL80211_KEY_MAX, key,
 600                                    nl80211_key_policy);
 601         if (err)
 602                 return err;
 603
 604         k->def = !!tb[NL80211_KEY_DEFAULT];
 605         k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];
 606
 607         if (k->def) {
 608                 k->def_uni = true;
 609                 k->def_multi = true;
 610         }
 611         if (k->defmgmt)
 612                 k->def_multi = true;
 613
 614         if (tb[NL80211_KEY_IDX])
 615                 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);
 616
 617         if (tb[NL80211_KEY_DATA]) {
 618                 k->p.key = nla_data(tb[NL80211_KEY_DATA]);
 619                 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
 620         }
 621
 622         if (tb[NL80211_KEY_SEQ]) {
 623                 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
 624                 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
 625         }
 626
 627         if (tb[NL80211_KEY_CIPHER])
 628                 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);
 629
 630         if (tb[NL80211_KEY_TYPE]) {
 631                 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]);
 632                 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
 633                         return -EINVAL;
 634         }
 635
 636         if (tb[NL80211_KEY_DEFAULT_TYPES]) {
 637                 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
 638                 err = nla_parse_nested(kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
 639                                        tb[NL80211_KEY_DEFAULT_TYPES],
 640                                        nl80211_key_default_policy);
 641                 if (err)
 642                         return err;
 643
 644                 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
 645                 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
 646         }
 647
 648         return 0;
 649 }
 650
 651 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k)
 652 {
 653         if (info->attrs[NL80211_ATTR_KEY_DATA]) {
 654                 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
 655                 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
 656         }
 657
 658         if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
 659                 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
 660                 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
 661         }
 662
 663         if (info->attrs[NL80211_ATTR_KEY_IDX])
 664                 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
 665
 666         if (info->attrs[NL80211_ATTR_KEY_CIPHER])
 667                 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
 668
 669         k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
 670         k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT];
 671
 672         if (k->def) {
 673                 k->def_uni = true;
 674                 k->def_multi = true;
 675         }
 676         if (k->defmgmt)
 677                 k->def_multi = true;
 678
 679         if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
 680                 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
 681                 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
 682                         return -EINVAL;
 683         }
 684
 685         if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) {
 686                 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
 687                 int err = nla_parse_nested(
 688                                 kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
 689                                 info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES],
 690                                 nl80211_key_default_policy);
 691                 if (err)
 692                         return err;
 693
 694                 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
 695                 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
 696         }
 697
 698         return 0;
 699 }
 700
 701 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
 702 {
 703         int err;
 704
 705         memset(k, 0, sizeof(*k));
 706         k->idx = -1;
 707         k->type = -1;
 708
 709         if (info->attrs[NL80211_ATTR_KEY])
 710                 err = nl80211_parse_key_new(info->attrs[NL80211_ATTR_KEY], k);
 711         else
 712                 err = nl80211_parse_key_old(info, k);
 713
 714         if (err)
 715                 return err;
 716
 717         if (k->def && k->defmgmt)
 718                 return -EINVAL;
 719
 720         if (k->defmgmt) {
 721                 if (k->def_uni || !k->def_multi)
 722                         return -EINVAL;
 723         }
 724
 725         if (k->idx != -1) {
 726                 if (k->defmgmt) {
 727                         if (k->idx < 4 || k->idx > 5)
 728                                 return -EINVAL;
 729                 } else if (k->def) {
 730                         if (k->idx < 0 || k->idx > 3)
 731                                 return -EINVAL;
 732                 } else {
 733                         if (k->idx < 0 || k->idx > 5)
 734                                 return -EINVAL;
 735                 }
 736         }
 737
 738         return 0;
 739 }
 740
 741 static struct cfg80211_cached_keys *
 742 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
 743                        struct nlattr *keys, bool *no_ht)
 744 {
 745         struct key_parse parse;
 746         struct nlattr *key;
 747         struct cfg80211_cached_keys *result;
 748         int rem, err, def = 0;
 749
 750         result = kzalloc(sizeof(*result), GFP_KERNEL);
 751         if (!result)
 752                 return ERR_PTR(-ENOMEM);
 753
 754         result->def = -1;
 755         result->defmgmt = -1;
 756
 757         nla_for_each_nested(key, keys, rem) {
 758                 memset(&parse, 0, sizeof(parse));
 759                 parse.idx = -1;
 760
 761                 err = nl80211_parse_key_new(key, &parse);
 762                 if (err)
 763                         goto error;
 764                 err = -EINVAL;
 765                 if (!parse.p.key)
 766                         goto error;
 767                 if (parse.idx < 0 || parse.idx > 4)
 768                         goto error;
 769                 if (parse.def) {
 770                         if (def)
 771                                 goto error;
 772                         def = 1;
 773                         result->def = parse.idx;
 774                         if (!parse.def_uni || !parse.def_multi)
 775                                 goto error;
 776                 } else if (parse.defmgmt)
 777                         goto error;
 778                 err = cfg80211_validate_key_settings(rdev, &parse.p,
 779                                                      parse.idx, false, NULL);
 780                 if (err)
 781                         goto error;
 782                 result->params[parse.idx].cipher = parse.p.cipher;
 783                 result->params[parse.idx].key_len = parse.p.key_len;
 784                 result->params[parse.idx].key = result->data[parse.idx];
 785                 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
 786
 787                 if (parse.p.cipher == WLAN_CIPHER_SUITE_WEP40 ||
 788                     parse.p.cipher == WLAN_CIPHER_SUITE_WEP104) {
 789                         if (no_ht)
 790                                 *no_ht = true;
 791                 }
 792         }
 793
 794         return result;
 795  error:
 796         kfree(result);
 797         return ERR_PTR(err);
 798 }
 799
 800 static int nl80211_key_allowed(struct wireless_dev *wdev)
 801 {
 802         ASSERT_WDEV_LOCK(wdev);
 803
 804         switch (wdev->iftype) {
 805         case NL80211_IFTYPE_AP:
 806         case NL80211_IFTYPE_AP_VLAN:
 807         case NL80211_IFTYPE_P2P_GO:
 808         case NL80211_IFTYPE_MESH_POINT:
 809                 break;
 810         case NL80211_IFTYPE_ADHOC:
 811         case NL80211_IFTYPE_STATION:
 812         case NL80211_IFTYPE_P2P_CLIENT:
 813                 if (!wdev->current_bss)
 814                         return -ENOLINK;
 815                 break;
 816         default:
 817                 return -EINVAL;
 818         }
 819
 820         return 0;
 821 }
 822
 823 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes)
 824 {
 825         struct nlattr *nl_modes = nla_nest_start(msg, attr);
 826         int i;
 827
 828         if (!nl_modes)
 829                 goto nla_put_failure;
 830
 831         i = 0;
 832         while (ifmodes) {
 833                 if ((ifmodes & 1) && nla_put_flag(msg, i))
 834                         goto nla_put_failure;
 835                 ifmodes >>= 1;
 836                 i++;
 837         }
 838
 839         nla_nest_end(msg, nl_modes);
 840         return 0;
 841
 842 nla_put_failure:
 843         return -ENOBUFS;
 844 }
 845
 846 static int nl80211_put_iface_combinations(struct wiphy *wiphy,
 847                                           struct sk_buff *msg,
 848                                           bool large)
 849 {
 850         struct nlattr *nl_combis;
 851         int i, j;
 852
 853         nl_combis = nla_nest_start(msg,
 854                                 NL80211_ATTR_INTERFACE_COMBINATIONS);
 855         if (!nl_combis)
 856                 goto nla_put_failure;
 857
 858         for (i = 0; i < wiphy->n_iface_combinations; i++) {
 859                 const struct ieee80211_iface_combination *c;
 860                 struct nlattr *nl_combi, *nl_limits;
 861
 862                 c = &wiphy->iface_combinations[i];
 863
 864                 nl_combi = nla_nest_start(msg, i + 1);
 865                 if (!nl_combi)
 866                         goto nla_put_failure;
 867
 868                 nl_limits = nla_nest_start(msg, NL80211_IFACE_COMB_LIMITS);
 869                 if (!nl_limits)
 870                         goto nla_put_failure;
 871
 872                 for (j = 0; j < c->n_limits; j++) {
 873                         struct nlattr *nl_limit;
 874
 875                         nl_limit = nla_nest_start(msg, j + 1);
 876                         if (!nl_limit)
 877                                 goto nla_put_failure;
 878                         if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX,
 879                                         c->limits[j].max))
 880                                 goto nla_put_failure;
 881                         if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES,
 882                                                 c->limits[j].types))
 883                                 goto nla_put_failure;
 884                         nla_nest_end(msg, nl_limit);
 885                 }
 886
 887                 nla_nest_end(msg, nl_limits);
 888
 889                 if (c->beacon_int_infra_match &&
 890                     nla_put_flag(msg, NL80211_IFACE_COMB_STA_AP_BI_MATCH))
 891                         goto nla_put_failure;
 892                 if (nla_put_u32(msg, NL80211_IFACE_COMB_NUM_CHANNELS,
 893                                 c->num_different_channels) ||
 894                     nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM,
 895                                 c->max_interfaces))
 896                         goto nla_put_failure;
 897                 if (large &&
 898                     nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS,
 899                                 c->radar_detect_widths))
 900                         goto nla_put_failure;
 901
 902                 nla_nest_end(msg, nl_combi);
 903         }
 904
 905         nla_nest_end(msg, nl_combis);
 906
 907         return 0;
 908 nla_put_failure:
 909         return -ENOBUFS;
 910 }
 911
 912 #ifdef CONFIG_PM
 913 static int nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device *rdev,
 914                                         struct sk_buff *msg)
 915 {
 916         const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan->tcp;
 917         struct nlattr *nl_tcp;
 918
 919         if (!tcp)
 920                 return 0;
 921
 922         nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
 923         if (!nl_tcp)
 924                 return -ENOBUFS;
 925
 926         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
 927                         tcp->data_payload_max))
 928                 return -ENOBUFS;
 929
 930         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
 931                         tcp->data_payload_max))
 932                 return -ENOBUFS;
 933
 934         if (tcp->seq && nla_put_flag(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ))
 935                 return -ENOBUFS;
 936
 937         if (tcp->tok && nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
 938                                 sizeof(*tcp->tok), tcp->tok))
 939                 return -ENOBUFS;
 940
 941         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
 942                         tcp->data_interval_max))
 943                 return -ENOBUFS;
 944
 945         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
 946                         tcp->wake_payload_max))
 947                 return -ENOBUFS;
 948
 949         nla_nest_end(msg, nl_tcp);
 950         return 0;
 951 }
 952
 953 static int nl80211_send_wowlan(struct sk_buff *msg,
 954                                struct cfg80211_registered_device *dev,
 955                                bool large)
 956 {
 957         struct nlattr *nl_wowlan;
 958
 959         if (!dev->wiphy.wowlan)
 960                 return 0;
 961
 962         nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED);
 963         if (!nl_wowlan)
 964                 return -ENOBUFS;
 965
 966         if (((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_ANY) &&
 967              nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
 968             ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_DISCONNECT) &&
 969              nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
 970             ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT) &&
 971              nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
 972             ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) &&
 973              nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) ||
 974             ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) &&
 975              nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
 976             ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) &&
 977              nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
 978             ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) &&
 979              nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
 980             ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE) &&
 981              nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
 982                 return -ENOBUFS;
 983
 984         if (dev->wiphy.wowlan->n_patterns) {
 985                 struct nl80211_pattern_support pat = {
 986                         .max_patterns = dev->wiphy.wowlan->n_patterns,
 987                         .min_pattern_len = dev->wiphy.wowlan->pattern_min_len,
 988                         .max_pattern_len = dev->wiphy.wowlan->pattern_max_len,
 989                         .max_pkt_offset = dev->wiphy.wowlan->max_pkt_offset,
 990                 };
 991
 992                 if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
 993                             sizeof(pat), &pat))
 994                         return -ENOBUFS;
 995         }
 996
 997         if (large && nl80211_send_wowlan_tcp_caps(dev, msg))
 998                 return -ENOBUFS;
 999
1000         nla_nest_end(msg, nl_wowlan);
1001
1002         return 0;
1003 }
1004 #endif
1005
1006 static int nl80211_send_coalesce(struct sk_buff *msg,
1007                                  struct cfg80211_registered_device *dev)
1008 {
1009         struct nl80211_coalesce_rule_support rule;
1010
1011         if (!dev->wiphy.coalesce)
1012                 return 0;
1013
1014         rule.max_rules = dev->wiphy.coalesce->n_rules;
1015         rule.max_delay = dev->wiphy.coalesce->max_delay;
1016         rule.pat.max_patterns = dev->wiphy.coalesce->n_patterns;
1017         rule.pat.min_pattern_len = dev->wiphy.coalesce->pattern_min_len;
1018         rule.pat.max_pattern_len = dev->wiphy.coalesce->pattern_max_len;
1019         rule.pat.max_pkt_offset = dev->wiphy.coalesce->max_pkt_offset;
1020
1021         if (nla_put(msg, NL80211_ATTR_COALESCE_RULE, sizeof(rule), &rule))
1022                 return -ENOBUFS;
1023
1024         return 0;
1025 }
1026
1027 static int nl80211_send_band_rateinfo(struct sk_buff *msg,
1028                                       struct ieee80211_supported_band *sband)
1029 {
1030         struct nlattr *nl_rates, *nl_rate;
1031         struct ieee80211_rate *rate;
1032         int i;
1033
1034         /* add HT info */
1035         if (sband->ht_cap.ht_supported &&
1036             (nla_put(msg, NL80211_BAND_ATTR_HT_MCS_SET,
1037                      sizeof(sband->ht_cap.mcs),
1038                      &sband->ht_cap.mcs) ||
1039              nla_put_u16(msg, NL80211_BAND_ATTR_HT_CAPA,
1040                          sband->ht_cap.cap) ||
1041              nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
1042                         sband->ht_cap.ampdu_factor) ||
1043              nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
1044                         sband->ht_cap.ampdu_density)))
1045                 return -ENOBUFS;
1046
1047         /* add VHT info */
1048         if (sband->vht_cap.vht_supported &&
1049             (nla_put(msg, NL80211_BAND_ATTR_VHT_MCS_SET,
1050                      sizeof(sband->vht_cap.vht_mcs),
1051                      &sband->vht_cap.vht_mcs) ||
1052              nla_put_u32(msg, NL80211_BAND_ATTR_VHT_CAPA,
1053                          sband->vht_cap.cap)))
1054                 return -ENOBUFS;
1055
1056         /* add bitrates */
1057         nl_rates = nla_nest_start(msg, NL80211_BAND_ATTR_RATES);
1058         if (!nl_rates)
1059                 return -ENOBUFS;
1060
1061         for (i = 0; i < sband->n_bitrates; i++) {
1062                 nl_rate = nla_nest_start(msg, i);
1063                 if (!nl_rate)
1064                         return -ENOBUFS;
1065
1066                 rate = &sband->bitrates[i];
1067                 if (nla_put_u32(msg, NL80211_BITRATE_ATTR_RATE,
1068                                 rate->bitrate))
1069                         return -ENOBUFS;
1070                 if ((rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) &&
1071                     nla_put_flag(msg,
1072                                  NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE))
1073                         return -ENOBUFS;
1074
1075                 nla_nest_end(msg, nl_rate);
1076         }
1077
1078         nla_nest_end(msg, nl_rates);
1079
1080         return 0;
1081 }
1082
1083 static int
1084 nl80211_send_mgmt_stypes(struct sk_buff *msg,
1085                          const struct ieee80211_txrx_stypes *mgmt_stypes)
1086 {
1087         u16 stypes;
1088         struct nlattr *nl_ftypes, *nl_ifs;
1089         enum nl80211_iftype ift;
1090         int i;
1091
1092         if (!mgmt_stypes)
1093                 return 0;
1094
1095         nl_ifs = nla_nest_start(msg, NL80211_ATTR_TX_FRAME_TYPES);
1096         if (!nl_ifs)
1097                 return -ENOBUFS;
1098
1099         for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1100                 nl_ftypes = nla_nest_start(msg, ift);
1101                 if (!nl_ftypes)
1102                         return -ENOBUFS;
1103                 i = 0;
1104                 stypes = mgmt_stypes[ift].tx;
1105                 while (stypes) {
1106                         if ((stypes & 1) &&
1107                             nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1108                                         (i << 4) | IEEE80211_FTYPE_MGMT))
1109                                 return -ENOBUFS;
1110                         stypes >>= 1;
1111                         i++;
1112                 }
1113                 nla_nest_end(msg, nl_ftypes);
1114         }
1115
1116         nla_nest_end(msg, nl_ifs);
1117
1118         nl_ifs = nla_nest_start(msg, NL80211_ATTR_RX_FRAME_TYPES);
1119         if (!nl_ifs)
1120                 return -ENOBUFS;
1121
1122         for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1123                 nl_ftypes = nla_nest_start(msg, ift);
1124                 if (!nl_ftypes)
1125                         return -ENOBUFS;
1126                 i = 0;
1127                 stypes = mgmt_stypes[ift].rx;
1128                 while (stypes) {
1129                         if ((stypes & 1) &&
1130                             nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1131                                         (i << 4) | IEEE80211_FTYPE_MGMT))
1132                                 return -ENOBUFS;
1133                         stypes >>= 1;
1134                         i++;
1135                 }
1136                 nla_nest_end(msg, nl_ftypes);
1137         }
1138         nla_nest_end(msg, nl_ifs);
1139
1140         return 0;
1141 }
1142
1143 struct nl80211_dump_wiphy_state {
1144         s64 filter_wiphy;
1145         long start;
1146         long split_start, band_start, chan_start;
1147         bool split;
1148 };
1149
1150 static int nl80211_send_wiphy(struct cfg80211_registered_device *dev,
1151                               struct sk_buff *msg, u32 portid, u32 seq,
1152                               int flags, struct nl80211_dump_wiphy_state *state)
1153 {
1154         void *hdr;
1155         struct nlattr *nl_bands, *nl_band;
1156         struct nlattr *nl_freqs, *nl_freq;
1157         struct nlattr *nl_cmds;
1158         enum ieee80211_band band;
1159         struct ieee80211_channel *chan;
1160         int i;
1161         const struct ieee80211_txrx_stypes *mgmt_stypes =
1162                                 dev->wiphy.mgmt_stypes;
1163         u32 features;
1164
1165         hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_WIPHY);
1166         if (!hdr)
1167                 return -ENOBUFS;
1168
1169         if (WARN_ON(!state))
1170                 return -EINVAL;
1171
1172         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, dev->wiphy_idx) ||
1173             nla_put_string(msg, NL80211_ATTR_WIPHY_NAME,
1174                            wiphy_name(&dev->wiphy)) ||
1175             nla_put_u32(msg, NL80211_ATTR_GENERATION,
1176                         cfg80211_rdev_list_generation))
1177                 goto nla_put_failure;
1178
1179         switch (state->split_start) {
1180         case 0:
1181                 if (nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
1182                                dev->wiphy.retry_short) ||
1183                     nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
1184                                dev->wiphy.retry_long) ||
1185                     nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
1186                                 dev->wiphy.frag_threshold) ||
1187                     nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
1188                                 dev->wiphy.rts_threshold) ||
1189                     nla_put_u8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
1190                                dev->wiphy.coverage_class) ||
1191                     nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
1192                                dev->wiphy.max_scan_ssids) ||
1193                     nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS,
1194                                dev->wiphy.max_sched_scan_ssids) ||
1195                     nla_put_u16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
1196                                 dev->wiphy.max_scan_ie_len) ||
1197                     nla_put_u16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN,
1198                                 dev->wiphy.max_sched_scan_ie_len) ||
1199                     nla_put_u8(msg, NL80211_ATTR_MAX_MATCH_SETS,
1200                                dev->wiphy.max_match_sets))
1201                         goto nla_put_failure;
1202
1203                 if ((dev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) &&
1204                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_IBSS_RSN))
1205                         goto nla_put_failure;
1206                 if ((dev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) &&
1207                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_MESH_AUTH))
1208                         goto nla_put_failure;
1209                 if ((dev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
1210                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_AP_UAPSD))
1211                         goto nla_put_failure;
1212                 if ((dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) &&
1213                     nla_put_flag(msg, NL80211_ATTR_ROAM_SUPPORT))
1214                         goto nla_put_failure;
1215                 if ((dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) &&
1216                     nla_put_flag(msg, NL80211_ATTR_TDLS_SUPPORT))
1217                         goto nla_put_failure;
1218                 if ((dev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) &&
1219                     nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP))
1220                         goto nla_put_failure;
1221                 if ((dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ) &&
1222                     nla_put_flag(msg, WIPHY_FLAG_SUPPORTS_5_10_MHZ))
1223                         goto nla_put_failure;
1224
1225                 state->split_start++;
1226                 if (state->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                 state->split_start++;
1271                 if (state->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                 state->split_start++;
1278                 if (state->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 = state->band_start;
1286                      band < IEEE80211_NUM_BANDS; band++) {
1287                         struct ieee80211_supported_band *sband;
1288
1289                         sband = dev->wiphy.bands[band];
1290
1291                         if (!sband)
1292                                 continue;
1293
1294                         nl_band = nla_nest_start(msg, band);
1295                         if (!nl_band)
1296                                 goto nla_put_failure;
1297
1298                         switch (state->chan_start) {
1299                         case 0:
1300                                 if (nl80211_send_band_rateinfo(msg, sband))
1301                                         goto nla_put_failure;
1302                                 state->chan_start++;
1303                                 if (state->split)
1304                                         break;
1305                         default:
1306                                 /* add frequencies */
1307                                 nl_freqs = nla_nest_start(
1308                                         msg, NL80211_BAND_ATTR_FREQS);
1309                                 if (!nl_freqs)
1310                                         goto nla_put_failure;
1311
1312                                 for (i = state->chan_start - 1;
1313                                      i < sband->n_channels;
1314                                      i++) {
1315                                         nl_freq = nla_nest_start(msg, i);
1316                                         if (!nl_freq)
1317                                                 goto nla_put_failure;
1318
1319                                         chan = &sband->channels[i];
1320
1321                                         if (nl80211_msg_put_channel(
1322                                                         msg, chan,
1323                                                         state->split))
1324                                                 goto nla_put_failure;
1325
1326                                         nla_nest_end(msg, nl_freq);
1327                                         if (state->split)
1328                                                 break;
1329                                 }
1330                                 if (i < sband->n_channels)
1331                                         state->chan_start = i + 2;
1332                                 else
1333                                         state->chan_start = 0;
1334                                 nla_nest_end(msg, nl_freqs);
1335                         }
1336
1337                         nla_nest_end(msg, nl_band);
1338
1339                         if (state->split) {
1340                                 /* start again here */
1341                                 if (state->chan_start)
1342                                         band--;
1343                                 break;
1344                         }
1345                 }
1346                 nla_nest_end(msg, nl_bands);
1347
1348                 if (band < IEEE80211_NUM_BANDS)
1349                         state->band_start = band + 1;
1350                 else
1351                         state->band_start = 0;
1352
1353                 /* if bands & channels are done, continue outside */
1354                 if (state->band_start == 0 && state->chan_start == 0)
1355                         state->split_start++;
1356                 if (state->split)
1357                         break;
1358         case 4:
1359                 nl_cmds = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_COMMANDS);
1360                 if (!nl_cmds)
1361                         goto nla_put_failure;
1362
1363                 i = 0;
1364 #define CMD(op, n)                                                      \
1365                  do {                                                   \
1366                         if (dev->ops->op) {                             \
1367                                 i++;                                    \
1368                                 if (nla_put_u32(msg, i, NL80211_CMD_ ## n)) \
1369                                         goto nla_put_failure;           \
1370                         }                                               \
1371                 } while (0)
1372
1373                 CMD(add_virtual_intf, NEW_INTERFACE);
1374                 CMD(change_virtual_intf, SET_INTERFACE);
1375                 CMD(add_key, NEW_KEY);
1376                 CMD(start_ap, START_AP);
1377                 CMD(add_station, NEW_STATION);
1378                 CMD(add_mpath, NEW_MPATH);
1379                 CMD(update_mesh_config, SET_MESH_CONFIG);
1380                 CMD(change_bss, SET_BSS);
1381                 CMD(auth, AUTHENTICATE);
1382                 CMD(assoc, ASSOCIATE);
1383                 CMD(deauth, DEAUTHENTICATE);
1384                 CMD(disassoc, DISASSOCIATE);
1385                 CMD(join_ibss, JOIN_IBSS);
1386                 CMD(join_mesh, JOIN_MESH);
1387                 CMD(set_pmksa, SET_PMKSA);
1388                 CMD(del_pmksa, DEL_PMKSA);
1389                 CMD(flush_pmksa, FLUSH_PMKSA);
1390                 if (dev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)
1391                         CMD(remain_on_channel, REMAIN_ON_CHANNEL);
1392                 CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
1393                 CMD(mgmt_tx, FRAME);
1394                 CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL);
1395                 if (dev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
1396                         i++;
1397                         if (nla_put_u32(msg, i, NL80211_CMD_SET_WIPHY_NETNS))
1398                                 goto nla_put_failure;
1399                 }
1400                 if (dev->ops->set_monitor_channel || dev->ops->start_ap ||
1401                     dev->ops->join_mesh) {
1402                         i++;
1403                         if (nla_put_u32(msg, i, NL80211_CMD_SET_CHANNEL))
1404                                 goto nla_put_failure;
1405                 }
1406                 CMD(set_wds_peer, SET_WDS_PEER);
1407                 if (dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) {
1408                         CMD(tdls_mgmt, TDLS_MGMT);
1409                         CMD(tdls_oper, TDLS_OPER);
1410                 }
1411                 if (dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN)
1412                         CMD(sched_scan_start, START_SCHED_SCAN);
1413                 CMD(probe_client, PROBE_CLIENT);
1414                 CMD(set_noack_map, SET_NOACK_MAP);
1415                 if (dev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) {
1416                         i++;
1417                         if (nla_put_u32(msg, i, NL80211_CMD_REGISTER_BEACONS))
1418                                 goto nla_put_failure;
1419                 }
1420                 CMD(start_p2p_device, START_P2P_DEVICE);
1421                 CMD(set_mcast_rate, SET_MCAST_RATE);
1422                 if (state->split) {
1423                         CMD(crit_proto_start, CRIT_PROTOCOL_START);
1424                         CMD(crit_proto_stop, CRIT_PROTOCOL_STOP);
1425                 }
1426
1427 #ifdef CONFIG_NL80211_TESTMODE
1428                 CMD(testmode_cmd, TESTMODE);
1429 #endif
1430
1431 #undef CMD
1432
1433                 if (dev->ops->connect || dev->ops->auth) {
1434                         i++;
1435                         if (nla_put_u32(msg, i, NL80211_CMD_CONNECT))
1436                                 goto nla_put_failure;
1437                 }
1438
1439                 if (dev->ops->disconnect || dev->ops->deauth) {
1440                         i++;
1441                         if (nla_put_u32(msg, i, NL80211_CMD_DISCONNECT))
1442                                 goto nla_put_failure;
1443                 }
1444
1445                 nla_nest_end(msg, nl_cmds);
1446                 state->split_start++;
1447                 if (state->split)
1448                         break;
1449         case 5:
1450                 if (dev->ops->remain_on_channel &&
1451                     (dev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) &&
1452                     nla_put_u32(msg,
1453                                 NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
1454                                 dev->wiphy.max_remain_on_channel_duration))
1455                         goto nla_put_failure;
1456
1457                 if ((dev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) &&
1458                     nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK))
1459                         goto nla_put_failure;
1460
1461                 if (nl80211_send_mgmt_stypes(msg, mgmt_stypes))
1462                         goto nla_put_failure;
1463                 state->split_start++;
1464                 if (state->split)
1465                         break;
1466         case 6:
1467 #ifdef CONFIG_PM
1468                 if (nl80211_send_wowlan(msg, dev, state->split))
1469                         goto nla_put_failure;
1470                 state->split_start++;
1471                 if (state->split)
1472                         break;
1473 #else
1474                 state->split_start++;
1475 #endif
1476         case 7:
1477                 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES,
1478                                         dev->wiphy.software_iftypes))
1479                         goto nla_put_failure;
1480
1481                 if (nl80211_put_iface_combinations(&dev->wiphy, msg,
1482                                                    state->split))
1483                         goto nla_put_failure;
1484
1485                 state->split_start++;
1486                 if (state->split)
1487                         break;
1488         case 8:
1489                 if ((dev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) &&
1490                     nla_put_u32(msg, NL80211_ATTR_DEVICE_AP_SME,
1491                                 dev->wiphy.ap_sme_capa))
1492                         goto nla_put_failure;
1493
1494                 features = dev->wiphy.features;
1495                 /*
1496                  * We can only add the per-channel limit information if the
1497                  * dump is split, otherwise it makes it too big. Therefore
1498                  * only advertise it in that case.
1499                  */
1500                 if (state->split)
1501                         features |= NL80211_FEATURE_ADVERTISE_CHAN_LIMITS;
1502                 if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS, features))
1503                         goto nla_put_failure;
1504
1505                 if (dev->wiphy.ht_capa_mod_mask &&
1506                     nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK,
1507                             sizeof(*dev->wiphy.ht_capa_mod_mask),
1508                             dev->wiphy.ht_capa_mod_mask))
1509                         goto nla_put_failure;
1510
1511                 if (dev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME &&
1512                     dev->wiphy.max_acl_mac_addrs &&
1513                     nla_put_u32(msg, NL80211_ATTR_MAC_ACL_MAX,
1514                                 dev->wiphy.max_acl_mac_addrs))
1515                         goto nla_put_failure;
1516
1517                 /*
1518                  * Any information below this point is only available to
1519                  * applications that can deal with it being split. This
1520                  * helps ensure that newly added capabilities don't break
1521                  * older tools by overrunning their buffers.
1522                  *
1523                  * We still increment split_start so that in the split
1524                  * case we'll continue with more data in the next round,
1525                  * but break unconditionally so unsplit data stops here.
1526                  */
1527                 state->split_start++;
1528                 break;
1529         case 9:
1530                 if (dev->wiphy.extended_capabilities &&
1531                     (nla_put(msg, NL80211_ATTR_EXT_CAPA,
1532                              dev->wiphy.extended_capabilities_len,
1533                              dev->wiphy.extended_capabilities) ||
1534                      nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
1535                              dev->wiphy.extended_capabilities_len,
1536                              dev->wiphy.extended_capabilities_mask)))
1537                         goto nla_put_failure;
1538
1539                 if (dev->wiphy.vht_capa_mod_mask &&
1540                     nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK,
1541                             sizeof(*dev->wiphy.vht_capa_mod_mask),
1542                             dev->wiphy.vht_capa_mod_mask))
1543                         goto nla_put_failure;
1544
1545                 state->split_start++;
1546                 break;
1547         case 10:
1548                 if (nl80211_send_coalesce(msg, dev))
1549                         goto nla_put_failure;
1550
1551                 /* done */
1552                 state->split_start = 0;
1553                 break;
1554         }
1555         return genlmsg_end(msg, hdr);
1556
1557  nla_put_failure:
1558         genlmsg_cancel(msg, hdr);
1559         return -EMSGSIZE;
1560 }
1561
1562 static int nl80211_dump_wiphy_parse(struct sk_buff *skb,
1563                                     struct netlink_callback *cb,
1564                                     struct nl80211_dump_wiphy_state *state)
1565 {
1566         struct nlattr **tb = nl80211_fam.attrbuf;
1567         int ret = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
1568                               tb, nl80211_fam.maxattr, nl80211_policy);
1569         /* ignore parse errors for backward compatibility */
1570         if (ret)
1571                 return 0;
1572
1573         state->split = tb[NL80211_ATTR_SPLIT_WIPHY_DUMP];
1574         if (tb[NL80211_ATTR_WIPHY])
1575                 state->filter_wiphy = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
1576         if (tb[NL80211_ATTR_WDEV])
1577                 state->filter_wiphy = nla_get_u64(tb[NL80211_ATTR_WDEV]) >> 32;
1578         if (tb[NL80211_ATTR_IFINDEX]) {
1579                 struct net_device *netdev;
1580                 struct cfg80211_registered_device *rdev;
1581                 int ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
1582
1583                 netdev = dev_get_by_index(sock_net(skb->sk), ifidx);
1584                 if (!netdev)
1585                         return -ENODEV;
1586                 if (netdev->ieee80211_ptr) {
1587                         rdev = wiphy_to_dev(
1588                                 netdev->ieee80211_ptr->wiphy);
1589                         state->filter_wiphy = rdev->wiphy_idx;
1590                 }
1591                 dev_put(netdev);
1592         }
1593
1594         return 0;
1595 }
1596
1597 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
1598 {
1599         int idx = 0, ret;
1600         struct nl80211_dump_wiphy_state *state = (void *)cb->args[0];
1601         struct cfg80211_registered_device *dev;
1602
1603         rtnl_lock();
1604         if (!state) {
1605                 state = kzalloc(sizeof(*state), GFP_KERNEL);
1606                 if (!state) {
1607                         rtnl_unlock();
1608                         return -ENOMEM;
1609                 }
1610                 state->filter_wiphy = -1;
1611                 ret = nl80211_dump_wiphy_parse(skb, cb, state);
1612                 if (ret) {
1613                         kfree(state);
1614                         rtnl_unlock();
1615                         return ret;
1616                 }
1617                 cb->args[0] = (long)state;
1618         }
1619
1620         list_for_each_entry(dev, &cfg80211_rdev_list, list) {
1621                 if (!net_eq(wiphy_net(&dev->wiphy), sock_net(skb->sk)))
1622                         continue;
1623                 if (++idx <= state->start)
1624                         continue;
1625                 if (state->filter_wiphy != -1 &&
1626                     state->filter_wiphy != dev->wiphy_idx)
1627                         continue;
1628                 /* attempt to fit multiple wiphy data chunks into the skb */
1629                 do {
1630                         ret = nl80211_send_wiphy(dev, skb,
1631                                                  NETLINK_CB(cb->skb).portid,
1632                                                  cb->nlh->nlmsg_seq,
1633                                                  NLM_F_MULTI, state);
1634                         if (ret < 0) {
1635                                 /*
1636                                  * If sending the wiphy data didn't fit (ENOBUFS
1637                                  * or EMSGSIZE returned), this SKB is still
1638                                  * empty (so it's not too big because another
1639                                  * wiphy dataset is already in the skb) and
1640                                  * we've not tried to adjust the dump allocation
1641                                  * yet ... then adjust the alloc size to be
1642                                  * bigger, and return 1 but with the empty skb.
1643                                  * This results in an empty message being RX'ed
1644                                  * in userspace, but that is ignored.
1645                                  *
1646                                  * We can then retry with the larger buffer.
1647                                  */
1648                                 if ((ret == -ENOBUFS || ret == -EMSGSIZE) &&
1649                                     !skb->len &&
1650                                     cb->min_dump_alloc < 4096) {
1651                                         cb->min_dump_alloc = 4096;
1652                                         rtnl_unlock();
1653                                         return 1;
1654                                 }
1655                                 idx--;
1656                                 break;
1657                         }
1658                 } while (state->split_start > 0);
1659                 break;
1660         }
1661         rtnl_unlock();
1662
1663         state->start = idx;
1664
1665         return skb->len;
1666 }
1667
1668 static int nl80211_dump_wiphy_done(struct netlink_callback *cb)
1669 {
1670         kfree((void *)cb->args[0]);
1671         return 0;
1672 }
1673
1674 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
1675 {
1676         struct sk_buff *msg;
1677         struct cfg80211_registered_device *dev = info->user_ptr[0];
1678         struct nl80211_dump_wiphy_state state = {};
1679
1680         msg = nlmsg_new(4096, GFP_KERNEL);
1681         if (!msg)
1682                 return -ENOMEM;
1683
1684         if (nl80211_send_wiphy(dev, msg, info->snd_portid, info->snd_seq, 0,
1685                                &state) < 0) {
1686                 nlmsg_free(msg);
1687                 return -ENOBUFS;
1688         }
1689
1690         return genlmsg_reply(msg, info);
1691 }
1692
1693 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
1694         [NL80211_TXQ_ATTR_QUEUE]                = { .type = NLA_U8 },
1695         [NL80211_TXQ_ATTR_TXOP]                 = { .type = NLA_U16 },
1696         [NL80211_TXQ_ATTR_CWMIN]                = { .type = NLA_U16 },
1697         [NL80211_TXQ_ATTR_CWMAX]                = { .type = NLA_U16 },
1698         [NL80211_TXQ_ATTR_AIFS]                 = { .type = NLA_U8 },
1699 };
1700
1701 static int parse_txq_params(struct nlattr *tb[],
1702                             struct ieee80211_txq_params *txq_params)
1703 {
1704         if (!tb[NL80211_TXQ_ATTR_AC] || !tb[NL80211_TXQ_ATTR_TXOP] ||
1705             !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
1706             !tb[NL80211_TXQ_ATTR_AIFS])
1707                 return -EINVAL;
1708
1709         txq_params->ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]);
1710         txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
1711         txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
1712         txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
1713         txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
1714
1715         if (txq_params->ac >= NL80211_NUM_ACS)
1716                 return -EINVAL;
1717
1718         return 0;
1719 }
1720
1721 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
1722 {
1723         /*
1724          * You can only set the channel explicitly for WDS interfaces,
1725          * all others have their channel managed via their respective
1726          * "establish a connection" command (connect, join, ...)
1727          *
1728          * For AP/GO and mesh mode, the channel can be set with the
1729          * channel userspace API, but is only stored and passed to the
1730          * low-level driver when the AP starts or the mesh is joined.
1731          * This is for backward compatibility, userspace can also give
1732          * the channel in the start-ap or join-mesh commands instead.
1733          *
1734          * Monitors are special as they are normally slaved to
1735          * whatever else is going on, so they have their own special
1736          * operation to set the monitor channel if possible.
1737          */
1738         return !wdev ||
1739                 wdev->iftype == NL80211_IFTYPE_AP ||
1740                 wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
1741                 wdev->iftype == NL80211_IFTYPE_MONITOR ||
1742                 wdev->iftype == NL80211_IFTYPE_P2P_GO;
1743 }
1744
1745 static int nl80211_parse_chandef(struct cfg80211_registered_device *rdev,
1746                                  struct genl_info *info,
1747                                  struct cfg80211_chan_def *chandef)
1748 {
1749         u32 control_freq;
1750
1751         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
1752                 return -EINVAL;
1753
1754         control_freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
1755
1756         chandef->chan = ieee80211_get_channel(&rdev->wiphy, control_freq);
1757         chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
1758         chandef->center_freq1 = control_freq;
1759         chandef->center_freq2 = 0;
1760
1761         /* Primary channel not allowed */
1762         if (!chandef->chan || chandef->chan->flags & IEEE80211_CHAN_DISABLED)
1763                 return -EINVAL;
1764
1765         if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
1766                 enum nl80211_channel_type chantype;
1767
1768                 chantype = nla_get_u32(
1769                                 info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
1770
1771                 switch (chantype) {
1772                 case NL80211_CHAN_NO_HT:
1773                 case NL80211_CHAN_HT20:
1774                 case NL80211_CHAN_HT40PLUS:
1775                 case NL80211_CHAN_HT40MINUS:
1776                         cfg80211_chandef_create(chandef, chandef->chan,
1777                                                 chantype);
1778                         break;
1779                 default:
1780                         return -EINVAL;
1781                 }
1782         } else if (info->attrs[NL80211_ATTR_CHANNEL_WIDTH]) {
1783                 chandef->width =
1784                         nla_get_u32(info->attrs[NL80211_ATTR_CHANNEL_WIDTH]);
1785                 if (info->attrs[NL80211_ATTR_CENTER_FREQ1])
1786                         chandef->center_freq1 =
1787                                 nla_get_u32(
1788                                         info->attrs[NL80211_ATTR_CENTER_FREQ1]);
1789                 if (info->attrs[NL80211_ATTR_CENTER_FREQ2])
1790                         chandef->center_freq2 =
1791                                 nla_get_u32(
1792                                         info->attrs[NL80211_ATTR_CENTER_FREQ2]);
1793         }
1794
1795         if (!cfg80211_chandef_valid(chandef))
1796                 return -EINVAL;
1797
1798         if (!cfg80211_chandef_usable(&rdev->wiphy, chandef,
1799                                      IEEE80211_CHAN_DISABLED))
1800                 return -EINVAL;
1801
1802         if ((chandef->width == NL80211_CHAN_WIDTH_5 ||
1803              chandef->width == NL80211_CHAN_WIDTH_10) &&
1804             !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ))
1805                 return -EINVAL;
1806
1807         return 0;
1808 }
1809
1810 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
1811                                  struct wireless_dev *wdev,
1812                                  struct genl_info *info)
1813 {
1814         struct cfg80211_chan_def chandef;
1815         int result;
1816         enum nl80211_iftype iftype = NL80211_IFTYPE_MONITOR;
1817
1818         if (wdev)
1819                 iftype = wdev->iftype;
1820
1821         if (!nl80211_can_set_dev_channel(wdev))
1822                 return -EOPNOTSUPP;
1823
1824         result = nl80211_parse_chandef(rdev, info, &chandef);
1825         if (result)
1826                 return result;
1827
1828         switch (iftype) {
1829         case NL80211_IFTYPE_AP:
1830         case NL80211_IFTYPE_P2P_GO:
1831                 if (wdev->beacon_interval) {
1832                         result = -EBUSY;
1833                         break;
1834                 }
1835                 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &chandef)) {
1836                         result = -EINVAL;
1837                         break;
1838                 }
1839                 wdev->preset_chandef = chandef;
1840                 result = 0;
1841                 break;
1842         case NL80211_IFTYPE_MESH_POINT:
1843                 result = cfg80211_set_mesh_channel(rdev, wdev, &chandef);
1844                 break;
1845         case NL80211_IFTYPE_MONITOR:
1846                 result = cfg80211_set_monitor_channel(rdev, &chandef);
1847                 break;
1848         default:
1849                 result = -EINVAL;
1850         }
1851
1852         return result;
1853 }
1854
1855 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
1856 {
1857         struct cfg80211_registered_device *rdev = info->user_ptr[0];
1858         struct net_device *netdev = info->user_ptr[1];
1859
1860         return __nl80211_set_channel(rdev, netdev->ieee80211_ptr, info);
1861 }
1862
1863 static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info)
1864 {
1865         struct cfg80211_registered_device *rdev = info->user_ptr[0];
1866         struct net_device *dev = info->user_ptr[1];
1867         struct wireless_dev *wdev = dev->ieee80211_ptr;
1868         const u8 *bssid;
1869
1870         if (!info->attrs[NL80211_ATTR_MAC])
1871                 return -EINVAL;
1872
1873         if (netif_running(dev))
1874                 return -EBUSY;
1875
1876         if (!rdev->ops->set_wds_peer)
1877                 return -EOPNOTSUPP;
1878
1879         if (wdev->iftype != NL80211_IFTYPE_WDS)
1880                 return -EOPNOTSUPP;
1881
1882         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
1883         return rdev_set_wds_peer(rdev, dev, bssid);
1884 }
1885
1886
1887 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
1888 {
1889         struct cfg80211_registered_device *rdev;
1890         struct net_device *netdev = NULL;
1891         struct wireless_dev *wdev;
1892         int result = 0, rem_txq_params = 0;
1893         struct nlattr *nl_txq_params;
1894         u32 changed;
1895         u8 retry_short = 0, retry_long = 0;
1896         u32 frag_threshold = 0, rts_threshold = 0;
1897         u8 coverage_class = 0;
1898
1899         ASSERT_RTNL();
1900
1901         /*
1902          * Try to find the wiphy and netdev. Normally this
1903          * function shouldn't need the netdev, but this is
1904          * done for backward compatibility -- previously
1905          * setting the channel was done per wiphy, but now
1906          * it is per netdev. Previous userland like hostapd
1907          * also passed a netdev to set_wiphy, so that it is
1908          * possible to let that go to the right netdev!
1909          */
1910
1911         if (info->attrs[NL80211_ATTR_IFINDEX]) {
1912                 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
1913
1914                 netdev = dev_get_by_index(genl_info_net(info), ifindex);
1915                 if (netdev && netdev->ieee80211_ptr)
1916                         rdev = wiphy_to_dev(netdev->ieee80211_ptr->wiphy);
1917                 else
1918                         netdev = NULL;
1919         }
1920
1921         if (!netdev) {
1922                 rdev = __cfg80211_rdev_from_attrs(genl_info_net(info),
1923                                                   info->attrs);
1924                 if (IS_ERR(rdev))
1925                         return PTR_ERR(rdev);
1926                 wdev = NULL;
1927                 netdev = NULL;
1928                 result = 0;
1929         } else
1930                 wdev = netdev->ieee80211_ptr;
1931
1932         /*
1933          * end workaround code, by now the rdev is available
1934          * and locked, and wdev may or may not be NULL.
1935          */
1936
1937         if (info->attrs[NL80211_ATTR_WIPHY_NAME])
1938                 result = cfg80211_dev_rename(
1939                         rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
1940
1941         if (result)
1942                 goto bad_res;
1943
1944         if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
1945                 struct ieee80211_txq_params txq_params;
1946                 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
1947
1948                 if (!rdev->ops->set_txq_params) {
1949                         result = -EOPNOTSUPP;
1950                         goto bad_res;
1951                 }
1952
1953                 if (!netdev) {
1954                         result = -EINVAL;
1955                         goto bad_res;
1956                 }
1957
1958                 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
1959                     netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
1960                         result = -EINVAL;
1961                         goto bad_res;
1962                 }
1963
1964                 if (!netif_running(netdev)) {
1965                         result = -ENETDOWN;
1966                         goto bad_res;
1967                 }
1968
1969                 nla_for_each_nested(nl_txq_params,
1970                                     info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
1971                                     rem_txq_params) {
1972                         nla_parse(tb, NL80211_TXQ_ATTR_MAX,
1973                                   nla_data(nl_txq_params),
1974                                   nla_len(nl_txq_params),
1975                                   txq_params_policy);
1976                         result = parse_txq_params(tb, &txq_params);
1977                         if (result)
1978                                 goto bad_res;
1979
1980                         result = rdev_set_txq_params(rdev, netdev,
1981                                                      &txq_params);
1982                         if (result)
1983                                 goto bad_res;
1984                 }
1985         }
1986
1987         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
1988                 result = __nl80211_set_channel(rdev,
1989                                 nl80211_can_set_dev_channel(wdev) ? wdev : NULL,
1990                                 info);
1991                 if (result)
1992                         goto bad_res;
1993         }
1994
1995         if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
1996                 struct wireless_dev *txp_wdev = wdev;
1997                 enum nl80211_tx_power_setting type;
1998                 int idx, mbm = 0;
1999
2000                 if (!(rdev->wiphy.features & NL80211_FEATURE_VIF_TXPOWER))
2001                         txp_wdev = NULL;
2002
2003                 if (!rdev->ops->set_tx_power) {
2004                         result = -EOPNOTSUPP;
2005                         goto bad_res;
2006                 }
2007
2008                 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
2009                 type = nla_get_u32(info->attrs[idx]);
2010
2011                 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
2012                     (type != NL80211_TX_POWER_AUTOMATIC)) {
2013                         result = -EINVAL;
2014                         goto bad_res;
2015                 }
2016
2017                 if (type != NL80211_TX_POWER_AUTOMATIC) {
2018                         idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
2019                         mbm = nla_get_u32(info->attrs[idx]);
2020                 }
2021
2022                 result = rdev_set_tx_power(rdev, txp_wdev, type, mbm);
2023                 if (result)
2024                         goto bad_res;
2025         }
2026
2027         if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
2028             info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
2029                 u32 tx_ant, rx_ant;
2030                 if ((!rdev->wiphy.available_antennas_tx &&
2031                      !rdev->wiphy.available_antennas_rx) ||
2032                     !rdev->ops->set_antenna) {
2033                         result = -EOPNOTSUPP;
2034                         goto bad_res;
2035                 }
2036
2037                 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
2038                 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
2039
2040                 /* reject antenna configurations which don't match the
2041                  * available antenna masks, except for the "all" mask */
2042                 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) ||
2043                     (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx))) {
2044                         result = -EINVAL;
2045                         goto bad_res;
2046                 }
2047
2048                 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx;
2049                 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx;
2050
2051                 result = rdev_set_antenna(rdev, tx_ant, rx_ant);
2052                 if (result)
2053                         goto bad_res;
2054         }
2055
2056         changed = 0;
2057
2058         if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
2059                 retry_short = nla_get_u8(
2060                         info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
2061                 if (retry_short == 0) {
2062                         result = -EINVAL;
2063                         goto bad_res;
2064                 }
2065                 changed |= WIPHY_PARAM_RETRY_SHORT;
2066         }
2067
2068         if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
2069                 retry_long = nla_get_u8(
2070                         info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
2071                 if (retry_long == 0) {
2072                         result = -EINVAL;
2073                         goto bad_res;
2074                 }
2075                 changed |= WIPHY_PARAM_RETRY_LONG;
2076         }
2077
2078         if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
2079                 frag_threshold = nla_get_u32(
2080                         info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
2081                 if (frag_threshold < 256) {
2082                         result = -EINVAL;
2083                         goto bad_res;
2084                 }
2085                 if (frag_threshold != (u32) -1) {
2086                         /*
2087                          * Fragments (apart from the last one) are required to
2088                          * have even length. Make the fragmentation code
2089                          * simpler by stripping LSB should someone try to use
2090                          * odd threshold value.
2091                          */
2092                         frag_threshold &= ~0x1;
2093                 }
2094                 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
2095         }
2096
2097         if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
2098                 rts_threshold = nla_get_u32(
2099                         info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
2100                 changed |= WIPHY_PARAM_RTS_THRESHOLD;
2101         }
2102
2103         if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
2104                 coverage_class = nla_get_u8(
2105                         info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
2106                 changed |= WIPHY_PARAM_COVERAGE_CLASS;
2107         }
2108
2109         if (changed) {
2110                 u8 old_retry_short, old_retry_long;
2111                 u32 old_frag_threshold, old_rts_threshold;
2112                 u8 old_coverage_class;
2113
2114                 if (!rdev->ops->set_wiphy_params) {
2115                         result = -EOPNOTSUPP;
2116                         goto bad_res;
2117                 }
2118
2119                 old_retry_short = rdev->wiphy.retry_short;
2120                 old_retry_long = rdev->wiphy.retry_long;
2121                 old_frag_threshold = rdev->wiphy.frag_threshold;
2122                 old_rts_threshold = rdev->wiphy.rts_threshold;
2123                 old_coverage_class = rdev->wiphy.coverage_class;
2124
2125                 if (changed & WIPHY_PARAM_RETRY_SHORT)
2126                         rdev->wiphy.retry_short = retry_short;
2127                 if (changed & WIPHY_PARAM_RETRY_LONG)
2128                         rdev->wiphy.retry_long = retry_long;
2129                 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
2130                         rdev->wiphy.frag_threshold = frag_threshold;
2131                 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
2132                         rdev->wiphy.rts_threshold = rts_threshold;
2133                 if (changed & WIPHY_PARAM_COVERAGE_CLASS)
2134                         rdev->wiphy.coverage_class = coverage_class;
2135
2136                 result = rdev_set_wiphy_params(rdev, changed);
2137                 if (result) {
2138                         rdev->wiphy.retry_short = old_retry_short;
2139                         rdev->wiphy.retry_long = old_retry_long;
2140                         rdev->wiphy.frag_threshold = old_frag_threshold;
2141                         rdev->wiphy.rts_threshold = old_rts_threshold;
2142                         rdev->wiphy.coverage_class = old_coverage_class;
2143                 }
2144         }
2145
2146  bad_res:
2147         if (netdev)
2148                 dev_put(netdev);
2149         return result;
2150 }
2151
2152 static inline u64 wdev_id(struct wireless_dev *wdev)
2153 {
2154         return (u64)wdev->identifier |
2155                ((u64)wiphy_to_dev(wdev->wiphy)->wiphy_idx << 32);
2156 }
2157
2158 static int nl80211_send_chandef(struct sk_buff *msg,
2159                                  struct cfg80211_chan_def *chandef)
2160 {
2161         WARN_ON(!cfg80211_chandef_valid(chandef));
2162
2163         if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
2164                         chandef->chan->center_freq))
2165                 return -ENOBUFS;
2166         switch (chandef->width) {
2167         case NL80211_CHAN_WIDTH_20_NOHT:
2168         case NL80211_CHAN_WIDTH_20:
2169         case NL80211_CHAN_WIDTH_40:
2170                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
2171                                 cfg80211_get_chandef_type(chandef)))
2172                         return -ENOBUFS;
2173                 break;
2174         default:
2175                 break;
2176         }
2177         if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, chandef->width))
2178                 return -ENOBUFS;
2179         if (nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1, chandef->center_freq1))
2180                 return -ENOBUFS;
2181         if (chandef->center_freq2 &&
2182             nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2, chandef->center_freq2))
2183                 return -ENOBUFS;
2184         return 0;
2185 }
2186
2187 static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags,
2188                               struct cfg80211_registered_device *rdev,
2189                               struct wireless_dev *wdev)
2190 {
2191         struct net_device *dev = wdev->netdev;
2192         void *hdr;
2193
2194         hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_INTERFACE);
2195         if (!hdr)
2196                 return -1;
2197
2198         if (dev &&
2199             (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
2200              nla_put_string(msg, NL80211_ATTR_IFNAME, dev->name)))
2201                 goto nla_put_failure;
2202
2203         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
2204             nla_put_u32(msg, NL80211_ATTR_IFTYPE, wdev->iftype) ||
2205             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
2206             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, wdev_address(wdev)) ||
2207             nla_put_u32(msg, NL80211_ATTR_GENERATION,
2208                         rdev->devlist_generation ^
2209                         (cfg80211_rdev_list_generation << 2)))
2210                 goto nla_put_failure;
2211
2212         if (rdev->ops->get_channel) {
2213                 int ret;
2214                 struct cfg80211_chan_def chandef;
2215
2216                 ret = rdev_get_channel(rdev, wdev, &chandef);
2217                 if (ret == 0) {
2218                         if (nl80211_send_chandef(msg, &chandef))
2219                                 goto nla_put_failure;
2220                 }
2221         }
2222
2223         if (wdev->ssid_len) {
2224                 if (nla_put(msg, NL80211_ATTR_SSID, wdev->ssid_len, wdev->ssid))
2225                         goto nla_put_failure;
2226         }
2227
2228         return genlmsg_end(msg, hdr);
2229
2230  nla_put_failure:
2231         genlmsg_cancel(msg, hdr);
2232         return -EMSGSIZE;
2233 }
2234
2235 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
2236 {
2237         int wp_idx = 0;
2238         int if_idx = 0;
2239         int wp_start = cb->args[0];
2240         int if_start = cb->args[1];
2241         struct cfg80211_registered_device *rdev;
2242         struct wireless_dev *wdev;
2243
2244         rtnl_lock();
2245         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
2246                 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
2247                         continue;
2248                 if (wp_idx < wp_start) {
2249                         wp_idx++;
2250                         continue;
2251                 }
2252                 if_idx = 0;
2253
2254                 list_for_each_entry(wdev, &rdev->wdev_list, list) {
2255                         if (if_idx < if_start) {
2256                                 if_idx++;
2257                                 continue;
2258                         }
2259                         if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).portid,
2260                                                cb->nlh->nlmsg_seq, NLM_F_MULTI,
2261                                                rdev, wdev) < 0) {
2262                                 goto out;
2263                         }
2264                         if_idx++;
2265                 }
2266
2267                 wp_idx++;
2268         }
2269  out:
2270         rtnl_unlock();
2271
2272         cb->args[0] = wp_idx;
2273         cb->args[1] = if_idx;
2274
2275         return skb->len;
2276 }
2277
2278 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
2279 {
2280         struct sk_buff *msg;
2281         struct cfg80211_registered_device *dev = info->user_ptr[0];
2282         struct wireless_dev *wdev = info->user_ptr[1];
2283
2284         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2285         if (!msg)
2286                 return -ENOMEM;
2287
2288         if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
2289                                dev, wdev) < 0) {
2290                 nlmsg_free(msg);
2291                 return -ENOBUFS;
2292         }
2293
2294         return genlmsg_reply(msg, info);
2295 }
2296
2297 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
2298         [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
2299         [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
2300         [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
2301         [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
2302         [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
2303         [NL80211_MNTR_FLAG_ACTIVE] = { .type = NLA_FLAG },
2304 };
2305
2306 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
2307 {
2308         struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
2309         int flag;
2310
2311         *mntrflags = 0;
2312
2313         if (!nla)
2314                 return -EINVAL;
2315
2316         if (nla_parse_nested(flags, NL80211_MNTR_FLAG_MAX,
2317                              nla, mntr_flags_policy))
2318                 return -EINVAL;
2319
2320         for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
2321                 if (flags[flag])
2322                         *mntrflags |= (1<<flag);
2323
2324         return 0;
2325 }
2326
2327 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
2328                                struct net_device *netdev, u8 use_4addr,
2329                                enum nl80211_iftype iftype)
2330 {
2331         if (!use_4addr) {
2332                 if (netdev && (netdev->priv_flags & IFF_BRIDGE_PORT))
2333                         return -EBUSY;
2334                 return 0;
2335         }
2336
2337         switch (iftype) {
2338         case NL80211_IFTYPE_AP_VLAN:
2339                 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
2340                         return 0;
2341                 break;
2342         case NL80211_IFTYPE_STATION:
2343                 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
2344                         return 0;
2345                 break;
2346         default:
2347                 break;
2348         }
2349
2350         return -EOPNOTSUPP;
2351 }
2352
2353 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
2354 {
2355         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2356         struct vif_params params;
2357         int err;
2358         enum nl80211_iftype otype, ntype;
2359         struct net_device *dev = info->user_ptr[1];
2360         u32 _flags, *flags = NULL;
2361         bool change = false;
2362
2363         memset(&params, 0, sizeof(params));
2364
2365         otype = ntype = dev->ieee80211_ptr->iftype;
2366
2367         if (info->attrs[NL80211_ATTR_IFTYPE]) {
2368                 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
2369                 if (otype != ntype)
2370                         change = true;
2371                 if (ntype > NL80211_IFTYPE_MAX)
2372                         return -EINVAL;
2373         }
2374
2375         if (info->attrs[NL80211_ATTR_MESH_ID]) {
2376                 struct wireless_dev *wdev = dev->ieee80211_ptr;
2377
2378                 if (ntype != NL80211_IFTYPE_MESH_POINT)
2379                         return -EINVAL;
2380                 if (netif_running(dev))
2381                         return -EBUSY;
2382
2383                 wdev_lock(wdev);
2384                 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
2385                              IEEE80211_MAX_MESH_ID_LEN);
2386                 wdev->mesh_id_up_len =
2387                         nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
2388                 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
2389                        wdev->mesh_id_up_len);
2390                 wdev_unlock(wdev);
2391         }
2392
2393         if (info->attrs[NL80211_ATTR_4ADDR]) {
2394                 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
2395                 change = true;
2396                 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
2397                 if (err)
2398                         return err;
2399         } else {
2400                 params.use_4addr = -1;
2401         }
2402
2403         if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
2404                 if (ntype != NL80211_IFTYPE_MONITOR)
2405                         return -EINVAL;
2406                 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
2407                                           &_flags);
2408                 if (err)
2409                         return err;
2410
2411                 flags = &_flags;
2412                 change = true;
2413         }
2414
2415         if (flags && (*flags & NL80211_MNTR_FLAG_ACTIVE) &&
2416             !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
2417                 return -EOPNOTSUPP;
2418
2419         if (change)
2420                 err = cfg80211_change_iface(rdev, dev, ntype, flags, &params);
2421         else
2422                 err = 0;
2423
2424         if (!err && params.use_4addr != -1)
2425                 dev->ieee80211_ptr->use_4addr = params.use_4addr;
2426
2427         return err;
2428 }
2429
2430 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
2431 {
2432         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2433         struct vif_params params;
2434         struct wireless_dev *wdev;
2435         struct sk_buff *msg;
2436         int err;
2437         enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
2438         u32 flags;
2439
2440         memset(&params, 0, sizeof(params));
2441
2442         if (!info->attrs[NL80211_ATTR_IFNAME])
2443                 return -EINVAL;
2444
2445         if (info->attrs[NL80211_ATTR_IFTYPE]) {
2446                 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
2447                 if (type > NL80211_IFTYPE_MAX)
2448                         return -EINVAL;
2449         }
2450
2451         if (!rdev->ops->add_virtual_intf ||
2452             !(rdev->wiphy.interface_modes & (1 << type)))
2453                 return -EOPNOTSUPP;
2454
2455         if (type == NL80211_IFTYPE_P2P_DEVICE && info->attrs[NL80211_ATTR_MAC]) {
2456                 nla_memcpy(params.macaddr, info->attrs[NL80211_ATTR_MAC],
2457                            ETH_ALEN);
2458                 if (!is_valid_ether_addr(params.macaddr))
2459                         return -EADDRNOTAVAIL;
2460         }
2461
2462         if (info->attrs[NL80211_ATTR_4ADDR]) {
2463                 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
2464                 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
2465                 if (err)
2466                         return err;
2467         }
2468
2469         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2470         if (!msg)
2471                 return -ENOMEM;
2472
2473         err = parse_monitor_flags(type == NL80211_IFTYPE_MONITOR ?
2474                                   info->attrs[NL80211_ATTR_MNTR_FLAGS] : NULL,
2475                                   &flags);
2476
2477         if (!err && (flags & NL80211_MNTR_FLAG_ACTIVE) &&
2478             !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
2479                 return -EOPNOTSUPP;
2480
2481         wdev = rdev_add_virtual_intf(rdev,
2482                                 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
2483                                 type, err ? NULL : &flags, &params);
2484         if (IS_ERR(wdev)) {
2485                 nlmsg_free(msg);
2486                 return PTR_ERR(wdev);
2487         }
2488
2489         switch (type) {
2490         case NL80211_IFTYPE_MESH_POINT:
2491                 if (!info->attrs[NL80211_ATTR_MESH_ID])
2492                         break;
2493                 wdev_lock(wdev);
2494                 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
2495                              IEEE80211_MAX_MESH_ID_LEN);
2496                 wdev->mesh_id_up_len =
2497                         nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
2498                 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
2499                        wdev->mesh_id_up_len);
2500                 wdev_unlock(wdev);
2501                 break;
2502         case NL80211_IFTYPE_P2P_DEVICE:
2503                 /*
2504                  * P2P Device doesn't have a netdev, so doesn't go
2505                  * through the netdev notifier and must be added here
2506                  */
2507                 mutex_init(&wdev->mtx);
2508                 INIT_LIST_HEAD(&wdev->event_list);
2509                 spin_lock_init(&wdev->event_lock);
2510                 INIT_LIST_HEAD(&wdev->mgmt_registrations);
2511                 spin_lock_init(&wdev->mgmt_registrations_lock);
2512
2513                 wdev->identifier = ++rdev->wdev_id;
2514                 list_add_rcu(&wdev->list, &rdev->wdev_list);
2515                 rdev->devlist_generation++;
2516                 break;
2517         default:
2518                 break;
2519         }
2520
2521         if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
2522                                rdev, wdev) < 0) {
2523                 nlmsg_free(msg);
2524                 return -ENOBUFS;
2525         }
2526
2527         return genlmsg_reply(msg, info);
2528 }
2529
2530 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
2531 {
2532         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2533         struct wireless_dev *wdev = info->user_ptr[1];
2534
2535         if (!rdev->ops->del_virtual_intf)
2536                 return -EOPNOTSUPP;
2537
2538         /*
2539          * If we remove a wireless device without a netdev then clear
2540          * user_ptr[1] so that nl80211_post_doit won't dereference it
2541          * to check if it needs to do dev_put(). Otherwise it crashes
2542          * since the wdev has been freed, unlike with a netdev where
2543          * we need the dev_put() for the netdev to really be freed.
2544          */
2545         if (!wdev->netdev)
2546                 info->user_ptr[1] = NULL;
2547
2548         return rdev_del_virtual_intf(rdev, wdev);
2549 }
2550
2551 static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info)
2552 {
2553         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2554         struct net_device *dev = info->user_ptr[1];
2555         u16 noack_map;
2556
2557         if (!info->attrs[NL80211_ATTR_NOACK_MAP])
2558                 return -EINVAL;
2559
2560         if (!rdev->ops->set_noack_map)
2561                 return -EOPNOTSUPP;
2562
2563         noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]);
2564
2565         return rdev_set_noack_map(rdev, dev, noack_map);
2566 }
2567
2568 struct get_key_cookie {
2569         struct sk_buff *msg;
2570         int error;
2571         int idx;
2572 };
2573
2574 static void get_key_callback(void *c, struct key_params *params)
2575 {
2576         struct nlattr *key;
2577         struct get_key_cookie *cookie = c;
2578
2579         if ((params->key &&
2580              nla_put(cookie->msg, NL80211_ATTR_KEY_DATA,
2581                      params->key_len, params->key)) ||
2582             (params->seq &&
2583              nla_put(cookie->msg, NL80211_ATTR_KEY_SEQ,
2584                      params->seq_len, params->seq)) ||
2585             (params->cipher &&
2586              nla_put_u32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
2587                          params->cipher)))
2588                 goto nla_put_failure;
2589
2590         key = nla_nest_start(cookie->msg, NL80211_ATTR_KEY);
2591         if (!key)
2592                 goto nla_put_failure;
2593
2594         if ((params->key &&
2595              nla_put(cookie->msg, NL80211_KEY_DATA,
2596                      params->key_len, params->key)) ||
2597             (params->seq &&
2598              nla_put(cookie->msg, NL80211_KEY_SEQ,
2599                      params->seq_len, params->seq)) ||
2600             (params->cipher &&
2601              nla_put_u32(cookie->msg, NL80211_KEY_CIPHER,
2602                          params->cipher)))
2603                 goto nla_put_failure;
2604
2605         if (nla_put_u8(cookie->msg, NL80211_ATTR_KEY_IDX, cookie->idx))
2606                 goto nla_put_failure;
2607
2608         nla_nest_end(cookie->msg, key);
2609
2610         return;
2611  nla_put_failure:
2612         cookie->error = 1;
2613 }
2614
2615 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
2616 {
2617         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2618         int err;
2619         struct net_device *dev = info->user_ptr[1];
2620         u8 key_idx = 0;
2621         const u8 *mac_addr = NULL;
2622         bool pairwise;
2623         struct get_key_cookie cookie = {
2624                 .error = 0,
2625         };
2626         void *hdr;
2627         struct sk_buff *msg;
2628
2629         if (info->attrs[NL80211_ATTR_KEY_IDX])
2630                 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
2631
2632         if (key_idx > 5)
2633                 return -EINVAL;
2634
2635         if (info->attrs[NL80211_ATTR_MAC])
2636                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2637
2638         pairwise = !!mac_addr;
2639         if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
2640                 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
2641                 if (kt >= NUM_NL80211_KEYTYPES)
2642                         return -EINVAL;
2643                 if (kt != NL80211_KEYTYPE_GROUP &&
2644                     kt != NL80211_KEYTYPE_PAIRWISE)
2645                         return -EINVAL;
2646                 pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
2647         }
2648
2649         if (!rdev->ops->get_key)
2650                 return -EOPNOTSUPP;
2651
2652         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2653         if (!msg)
2654                 return -ENOMEM;
2655
2656         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
2657                              NL80211_CMD_NEW_KEY);
2658         if (IS_ERR(hdr))
2659                 return PTR_ERR(hdr);
2660
2661         cookie.msg = msg;
2662         cookie.idx = key_idx;
2663
2664         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
2665             nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx))
2666                 goto nla_put_failure;
2667         if (mac_addr &&
2668             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
2669                 goto nla_put_failure;
2670
2671         if (pairwise && mac_addr &&
2672             !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
2673                 return -ENOENT;
2674
2675         err = rdev_get_key(rdev, dev, key_idx, pairwise, mac_addr, &cookie,
2676                            get_key_callback);
2677
2678         if (err)
2679                 goto free_msg;
2680
2681         if (cookie.error)
2682                 goto nla_put_failure;
2683
2684         genlmsg_end(msg, hdr);
2685         return genlmsg_reply(msg, info);
2686
2687  nla_put_failure:
2688         err = -ENOBUFS;
2689  free_msg:
2690         nlmsg_free(msg);
2691         return err;
2692 }
2693
2694 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
2695 {
2696         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2697         struct key_parse key;
2698         int err;
2699         struct net_device *dev = info->user_ptr[1];
2700
2701         err = nl80211_parse_key(info, &key);
2702         if (err)
2703                 return err;
2704
2705         if (key.idx < 0)
2706                 return -EINVAL;
2707
2708         /* only support setting default key */
2709         if (!key.def && !key.defmgmt)
2710                 return -EINVAL;
2711
2712         wdev_lock(dev->ieee80211_ptr);
2713
2714         if (key.def) {
2715                 if (!rdev->ops->set_default_key) {
2716                         err = -EOPNOTSUPP;
2717                         goto out;
2718                 }
2719
2720                 err = nl80211_key_allowed(dev->ieee80211_ptr);
2721                 if (err)
2722                         goto out;
2723
2724                 err = rdev_set_default_key(rdev, dev, key.idx,
2725                                                  key.def_uni, key.def_multi);
2726
2727                 if (err)
2728                         goto out;
2729
2730 #ifdef CONFIG_CFG80211_WEXT
2731                 dev->ieee80211_ptr->wext.default_key = key.idx;
2732 #endif
2733         } else {
2734                 if (key.def_uni || !key.def_multi) {
2735                         err = -EINVAL;
2736                         goto out;
2737                 }
2738
2739                 if (!rdev->ops->set_default_mgmt_key) {
2740                         err = -EOPNOTSUPP;
2741                         goto out;
2742                 }
2743
2744                 err = nl80211_key_allowed(dev->ieee80211_ptr);
2745                 if (err)
2746                         goto out;
2747
2748                 err = rdev_set_default_mgmt_key(rdev, dev, key.idx);
2749                 if (err)
2750                         goto out;
2751
2752 #ifdef CONFIG_CFG80211_WEXT
2753                 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx;
2754 #endif
2755         }
2756
2757  out:
2758         wdev_unlock(dev->ieee80211_ptr);
2759
2760         return err;
2761 }
2762
2763 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
2764 {
2765         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2766         int err;
2767         struct net_device *dev = info->user_ptr[1];
2768         struct key_parse key;
2769         const u8 *mac_addr = NULL;
2770
2771         err = nl80211_parse_key(info, &key);
2772         if (err)
2773                 return err;
2774
2775         if (!key.p.key)
2776                 return -EINVAL;
2777
2778         if (info->attrs[NL80211_ATTR_MAC])
2779                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2780
2781         if (key.type == -1) {
2782                 if (mac_addr)
2783                         key.type = NL80211_KEYTYPE_PAIRWISE;
2784                 else
2785                         key.type = NL80211_KEYTYPE_GROUP;
2786         }
2787
2788         /* for now */
2789         if (key.type != NL80211_KEYTYPE_PAIRWISE &&
2790             key.type != NL80211_KEYTYPE_GROUP)
2791                 return -EINVAL;
2792
2793         if (!rdev->ops->add_key)
2794                 return -EOPNOTSUPP;
2795
2796         if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
2797                                            key.type == NL80211_KEYTYPE_PAIRWISE,
2798                                            mac_addr))
2799                 return -EINVAL;
2800
2801         wdev_lock(dev->ieee80211_ptr);
2802         err = nl80211_key_allowed(dev->ieee80211_ptr);
2803         if (!err)
2804                 err = rdev_add_key(rdev, dev, key.idx,
2805                                    key.type == NL80211_KEYTYPE_PAIRWISE,
2806                                     mac_addr, &key.p);
2807         wdev_unlock(dev->ieee80211_ptr);
2808
2809         return err;
2810 }
2811
2812 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
2813 {
2814         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2815         int err;
2816         struct net_device *dev = info->user_ptr[1];
2817         u8 *mac_addr = NULL;
2818         struct key_parse key;
2819
2820         err = nl80211_parse_key(info, &key);
2821         if (err)
2822                 return err;
2823
2824         if (info->attrs[NL80211_ATTR_MAC])
2825                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2826
2827         if (key.type == -1) {
2828                 if (mac_addr)
2829                         key.type = NL80211_KEYTYPE_PAIRWISE;
2830                 else
2831                         key.type = NL80211_KEYTYPE_GROUP;
2832         }
2833
2834         /* for now */
2835         if (key.type != NL80211_KEYTYPE_PAIRWISE &&
2836             key.type != NL80211_KEYTYPE_GROUP)
2837                 return -EINVAL;
2838
2839         if (!rdev->ops->del_key)
2840                 return -EOPNOTSUPP;
2841
2842         wdev_lock(dev->ieee80211_ptr);
2843         err = nl80211_key_allowed(dev->ieee80211_ptr);
2844
2845         if (key.type == NL80211_KEYTYPE_PAIRWISE && mac_addr &&
2846             !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
2847                 err = -ENOENT;
2848
2849         if (!err)
2850                 err = rdev_del_key(rdev, dev, key.idx,
2851                                    key.type == NL80211_KEYTYPE_PAIRWISE,
2852                                    mac_addr);
2853
2854 #ifdef CONFIG_CFG80211_WEXT
2855         if (!err) {
2856                 if (key.idx == dev->ieee80211_ptr->wext.default_key)
2857                         dev->ieee80211_ptr->wext.default_key = -1;
2858                 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key)
2859                         dev->ieee80211_ptr->wext.default_mgmt_key = -1;
2860         }
2861 #endif
2862         wdev_unlock(dev->ieee80211_ptr);
2863
2864         return err;
2865 }
2866
2867 /* This function returns an error or the number of nested attributes */
2868 static int validate_acl_mac_addrs(struct nlattr *nl_attr)
2869 {
2870         struct nlattr *attr;
2871         int n_entries = 0, tmp;
2872
2873         nla_for_each_nested(attr, nl_attr, tmp) {
2874                 if (nla_len(attr) != ETH_ALEN)
2875                         return -EINVAL;
2876
2877                 n_entries++;
2878         }
2879
2880         return n_entries;
2881 }
2882
2883 /*
2884  * This function parses ACL information and allocates memory for ACL data.
2885  * On successful return, the calling function is responsible to free the
2886  * ACL buffer returned by this function.
2887  */
2888 static struct cfg80211_acl_data *parse_acl_data(struct wiphy *wiphy,
2889                                                 struct genl_info *info)
2890 {
2891         enum nl80211_acl_policy acl_policy;
2892         struct nlattr *attr;
2893         struct cfg80211_acl_data *acl;
2894         int i = 0, n_entries, tmp;
2895
2896         if (!wiphy->max_acl_mac_addrs)
2897                 return ERR_PTR(-EOPNOTSUPP);
2898
2899         if (!info->attrs[NL80211_ATTR_ACL_POLICY])
2900                 return ERR_PTR(-EINVAL);
2901
2902         acl_policy = nla_get_u32(info->attrs[NL80211_ATTR_ACL_POLICY]);
2903         if (acl_policy != NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED &&
2904             acl_policy != NL80211_ACL_POLICY_DENY_UNLESS_LISTED)
2905                 return ERR_PTR(-EINVAL);
2906
2907         if (!info->attrs[NL80211_ATTR_MAC_ADDRS])
2908                 return ERR_PTR(-EINVAL);
2909
2910         n_entries = validate_acl_mac_addrs(info->attrs[NL80211_ATTR_MAC_ADDRS]);
2911         if (n_entries < 0)
2912                 return ERR_PTR(n_entries);
2913
2914         if (n_entries > wiphy->max_acl_mac_addrs)
2915                 return ERR_PTR(-ENOTSUPP);
2916
2917         acl = kzalloc(sizeof(*acl) + (sizeof(struct mac_address) * n_entries),
2918                       GFP_KERNEL);
2919         if (!acl)
2920                 return ERR_PTR(-ENOMEM);
2921
2922         nla_for_each_nested(attr, info->attrs[NL80211_ATTR_MAC_ADDRS], tmp) {
2923                 memcpy(acl->mac_addrs[i].addr, nla_data(attr), ETH_ALEN);
2924                 i++;
2925         }
2926
2927         acl->n_acl_entries = n_entries;
2928         acl->acl_policy = acl_policy;
2929
2930         return acl;
2931 }
2932
2933 static int nl80211_set_mac_acl(struct sk_buff *skb, struct genl_info *info)
2934 {
2935         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2936         struct net_device *dev = info->user_ptr[1];
2937         struct cfg80211_acl_data *acl;
2938         int err;
2939
2940         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2941             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2942                 return -EOPNOTSUPP;
2943
2944         if (!dev->ieee80211_ptr->beacon_interval)
2945                 return -EINVAL;
2946
2947         acl = parse_acl_data(&rdev->wiphy, info);
2948         if (IS_ERR(acl))
2949                 return PTR_ERR(acl);
2950
2951         err = rdev_set_mac_acl(rdev, dev, acl);
2952
2953         kfree(acl);
2954
2955         return err;
2956 }
2957
2958 static int nl80211_parse_beacon(struct nlattr *attrs[],
2959                                 struct cfg80211_beacon_data *bcn)
2960 {
2961         bool haveinfo = false;
2962
2963         if (!is_valid_ie_attr(attrs[NL80211_ATTR_BEACON_TAIL]) ||
2964             !is_valid_ie_attr(attrs[NL80211_ATTR_IE]) ||
2965             !is_valid_ie_attr(attrs[NL80211_ATTR_IE_PROBE_RESP]) ||
2966             !is_valid_ie_attr(attrs[NL80211_ATTR_IE_ASSOC_RESP]))
2967                 return -EINVAL;
2968
2969         memset(bcn, 0, sizeof(*bcn));
2970
2971         if (attrs[NL80211_ATTR_BEACON_HEAD]) {
2972                 bcn->head = nla_data(attrs[NL80211_ATTR_BEACON_HEAD]);
2973                 bcn->head_len = nla_len(attrs[NL80211_ATTR_BEACON_HEAD]);
2974                 if (!bcn->head_len)
2975                         return -EINVAL;
2976                 haveinfo = true;
2977         }
2978
2979         if (attrs[NL80211_ATTR_BEACON_TAIL]) {
2980                 bcn->tail = nla_data(attrs[NL80211_ATTR_BEACON_TAIL]);
2981                 bcn->tail_len = nla_len(attrs[NL80211_ATTR_BEACON_TAIL]);
2982                 haveinfo = true;
2983         }
2984
2985         if (!haveinfo)
2986                 return -EINVAL;
2987
2988         if (attrs[NL80211_ATTR_IE]) {
2989                 bcn->beacon_ies = nla_data(attrs[NL80211_ATTR_IE]);
2990                 bcn->beacon_ies_len = nla_len(attrs[NL80211_ATTR_IE]);
2991         }
2992
2993         if (attrs[NL80211_ATTR_IE_PROBE_RESP]) {
2994                 bcn->proberesp_ies =
2995                         nla_data(attrs[NL80211_ATTR_IE_PROBE_RESP]);
2996                 bcn->proberesp_ies_len =
2997                         nla_len(attrs[NL80211_ATTR_IE_PROBE_RESP]);
2998         }
2999
3000         if (attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
3001                 bcn->assocresp_ies =
3002                         nla_data(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
3003                 bcn->assocresp_ies_len =
3004                         nla_len(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
3005         }
3006
3007         if (attrs[NL80211_ATTR_PROBE_RESP]) {
3008                 bcn->probe_resp = nla_data(attrs[NL80211_ATTR_PROBE_RESP]);
3009                 bcn->probe_resp_len = nla_len(attrs[NL80211_ATTR_PROBE_RESP]);
3010         }
3011
3012         return 0;
3013 }
3014
3015 static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev,
3016                                    struct cfg80211_ap_settings *params)
3017 {
3018         struct wireless_dev *wdev;
3019         bool ret = false;
3020
3021         list_for_each_entry(wdev, &rdev->wdev_list, list) {
3022                 if (wdev->iftype != NL80211_IFTYPE_AP &&
3023                     wdev->iftype != NL80211_IFTYPE_P2P_GO)
3024                         continue;
3025
3026                 if (!wdev->preset_chandef.chan)
3027                         continue;
3028
3029                 params->chandef = wdev->preset_chandef;
3030                 ret = true;
3031                 break;
3032         }
3033
3034         return ret;
3035 }
3036
3037 static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev,
3038                                     enum nl80211_auth_type auth_type,
3039                                     enum nl80211_commands cmd)
3040 {
3041         if (auth_type > NL80211_AUTHTYPE_MAX)
3042                 return false;
3043
3044         switch (cmd) {
3045         case NL80211_CMD_AUTHENTICATE:
3046                 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
3047                     auth_type == NL80211_AUTHTYPE_SAE)
3048                         return false;
3049                 return true;
3050         case NL80211_CMD_CONNECT:
3051         case NL80211_CMD_START_AP:
3052                 /* SAE not supported yet */
3053                 if (auth_type == NL80211_AUTHTYPE_SAE)
3054                         return false;
3055                 return true;
3056         default:
3057                 return false;
3058         }
3059 }
3060
3061 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
3062 {
3063         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3064         struct net_device *dev = info->user_ptr[1];
3065         struct wireless_dev *wdev = dev->ieee80211_ptr;
3066         struct cfg80211_ap_settings params;
3067         int err;
3068         u8 radar_detect_width = 0;
3069
3070         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3071             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3072                 return -EOPNOTSUPP;
3073
3074         if (!rdev->ops->start_ap)
3075                 return -EOPNOTSUPP;
3076
3077         if (wdev->beacon_interval)
3078                 return -EALREADY;
3079
3080         memset(&params, 0, sizeof(params));
3081
3082         /* these are required for START_AP */
3083         if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
3084             !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
3085             !info->attrs[NL80211_ATTR_BEACON_HEAD])
3086                 return -EINVAL;
3087
3088         err = nl80211_parse_beacon(info->attrs, &params.beacon);
3089         if (err)
3090                 return err;
3091
3092         params.beacon_interval =
3093                 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
3094         params.dtim_period =
3095                 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
3096
3097         err = cfg80211_validate_beacon_int(rdev, params.beacon_interval);
3098         if (err)
3099                 return err;
3100
3101         /*
3102          * In theory, some of these attributes should be required here
3103          * but since they were not used when the command was originally
3104          * added, keep them optional for old user space programs to let
3105          * them continue to work with drivers that do not need the
3106          * additional information -- drivers must check!
3107          */
3108         if (info->attrs[NL80211_ATTR_SSID]) {
3109                 params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
3110                 params.ssid_len =
3111                         nla_len(info->attrs[NL80211_ATTR_SSID]);
3112                 if (params.ssid_len == 0 ||
3113                     params.ssid_len > IEEE80211_MAX_SSID_LEN)
3114                         return -EINVAL;
3115         }
3116
3117         if (info->attrs[NL80211_ATTR_HIDDEN_SSID]) {
3118                 params.hidden_ssid = nla_get_u32(
3119                         info->attrs[NL80211_ATTR_HIDDEN_SSID]);
3120                 if (params.hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE &&
3121                     params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_LEN &&
3122                     params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_CONTENTS)
3123                         return -EINVAL;
3124         }
3125
3126         params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
3127
3128         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
3129                 params.auth_type = nla_get_u32(
3130                         info->attrs[NL80211_ATTR_AUTH_TYPE]);
3131                 if (!nl80211_valid_auth_type(rdev, params.auth_type,
3132                                              NL80211_CMD_START_AP))
3133                         return -EINVAL;
3134         } else
3135                 params.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
3136
3137         err = nl80211_crypto_settings(rdev, info, &params.crypto,
3138                                       NL80211_MAX_NR_CIPHER_SUITES);
3139         if (err)
3140                 return err;
3141
3142         if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) {
3143                 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER))
3144                         return -EOPNOTSUPP;
3145                 params.inactivity_timeout = nla_get_u16(
3146                         info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]);
3147         }
3148
3149         if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
3150                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3151                         return -EINVAL;
3152                 params.p2p_ctwindow =
3153                         nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
3154                 if (params.p2p_ctwindow > 127)
3155                         return -EINVAL;
3156                 if (params.p2p_ctwindow != 0 &&
3157                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
3158                         return -EINVAL;
3159         }
3160
3161         if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
3162                 u8 tmp;
3163
3164                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3165                         return -EINVAL;
3166                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
3167                 if (tmp > 1)
3168                         return -EINVAL;
3169                 params.p2p_opp_ps = tmp;
3170                 if (params.p2p_opp_ps != 0 &&
3171                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
3172                         return -EINVAL;
3173         }
3174
3175         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
3176                 err = nl80211_parse_chandef(rdev, info, &params.chandef);
3177                 if (err)
3178                         return err;
3179         } else if (wdev->preset_chandef.chan) {
3180                 params.chandef = wdev->preset_chandef;
3181         } else if (!nl80211_get_ap_channel(rdev, &params))
3182                 return -EINVAL;
3183
3184         if (!cfg80211_reg_can_beacon(&rdev->wiphy, &params.chandef))
3185                 return -EINVAL;
3186
3187         err = cfg80211_chandef_dfs_required(wdev->wiphy, &params.chandef);
3188         if (err < 0)
3189                 return err;
3190         if (err) {
3191                 radar_detect_width = BIT(params.chandef.width);
3192                 params.radar_required = true;
3193         }
3194
3195         err = cfg80211_can_use_iftype_chan(rdev, wdev, wdev->iftype,
3196                                            params.chandef.chan,
3197                                            CHAN_MODE_SHARED,
3198                                            radar_detect_width);
3199         if (err)
3200                 return err;
3201
3202         if (info->attrs[NL80211_ATTR_ACL_POLICY]) {
3203                 params.acl = parse_acl_data(&rdev->wiphy, info);
3204                 if (IS_ERR(params.acl))
3205                         return PTR_ERR(params.acl);
3206         }
3207
3208         err = rdev_start_ap(rdev, dev, &params);
3209         if (!err) {
3210                 wdev->preset_chandef = params.chandef;
3211                 wdev->beacon_interval = params.beacon_interval;
3212                 wdev->channel = params.chandef.chan;
3213                 wdev->ssid_len = params.ssid_len;
3214                 memcpy(wdev->ssid, params.ssid, wdev->ssid_len);
3215         }
3216
3217         kfree(params.acl);
3218
3219         return err;
3220 }
3221
3222 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info)
3223 {
3224         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3225         struct net_device *dev = info->user_ptr[1];
3226         struct wireless_dev *wdev = dev->ieee80211_ptr;
3227         struct cfg80211_beacon_data params;
3228         int err;
3229
3230         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3231             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3232                 return -EOPNOTSUPP;
3233
3234         if (!rdev->ops->change_beacon)
3235                 return -EOPNOTSUPP;
3236
3237         if (!wdev->beacon_interval)
3238                 return -EINVAL;
3239
3240         err = nl80211_parse_beacon(info->attrs, &params);
3241         if (err)
3242                 return err;
3243
3244         return rdev_change_beacon(rdev, dev, &params);
3245 }
3246
3247 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info)
3248 {
3249         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3250         struct net_device *dev = info->user_ptr[1];
3251
3252         return cfg80211_stop_ap(rdev, dev);
3253 }
3254
3255 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
3256         [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
3257         [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
3258         [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
3259         [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
3260         [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
3261         [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG },
3262 };
3263
3264 static int parse_station_flags(struct genl_info *info,
3265                                enum nl80211_iftype iftype,
3266                                struct station_parameters *params)
3267 {
3268         struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
3269         struct nlattr *nla;
3270         int flag;
3271
3272         /*
3273          * Try parsing the new attribute first so userspace
3274          * can specify both for older kernels.
3275          */
3276         nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
3277         if (nla) {
3278                 struct nl80211_sta_flag_update *sta_flags;
3279
3280                 sta_flags = nla_data(nla);
3281                 params->sta_flags_mask = sta_flags->mask;
3282                 params->sta_flags_set = sta_flags->set;
3283                 params->sta_flags_set &= params->sta_flags_mask;
3284                 if ((params->sta_flags_mask |
3285                      params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
3286                         return -EINVAL;
3287                 return 0;
3288         }
3289
3290         /* if present, parse the old attribute */
3291
3292         nla = info->attrs[NL80211_ATTR_STA_FLAGS];
3293         if (!nla)
3294                 return 0;
3295
3296         if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX,
3297                              nla, sta_flags_policy))
3298                 return -EINVAL;
3299
3300         /*
3301          * Only allow certain flags for interface types so that
3302          * other attributes are silently ignored. Remember that
3303          * this is backward compatibility code with old userspace
3304          * and shouldn't be hit in other cases anyway.
3305          */
3306         switch (iftype) {
3307         case NL80211_IFTYPE_AP:
3308         case NL80211_IFTYPE_AP_VLAN:
3309         case NL80211_IFTYPE_P2P_GO:
3310                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
3311                                          BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
3312                                          BIT(NL80211_STA_FLAG_WME) |
3313                                          BIT(NL80211_STA_FLAG_MFP);
3314                 break;
3315         case NL80211_IFTYPE_P2P_CLIENT:
3316         case NL80211_IFTYPE_STATION:
3317                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
3318                                          BIT(NL80211_STA_FLAG_TDLS_PEER);
3319                 break;
3320         case NL80211_IFTYPE_MESH_POINT:
3321                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3322                                          BIT(NL80211_STA_FLAG_MFP) |
3323                                          BIT(NL80211_STA_FLAG_AUTHORIZED);
3324         default:
3325                 return -EINVAL;
3326         }
3327
3328         for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) {
3329                 if (flags[flag]) {
3330                         params->sta_flags_set |= (1<<flag);
3331
3332                         /* no longer support new API additions in old API */
3333                         if (flag > NL80211_STA_FLAG_MAX_OLD_API)
3334                                 return -EINVAL;
3335                 }
3336         }
3337
3338         return 0;
3339 }
3340
3341 static bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info,
3342                                  int attr)
3343 {
3344         struct nlattr *rate;
3345         u32 bitrate;
3346         u16 bitrate_compat;
3347
3348         rate = nla_nest_start(msg, attr);
3349         if (!rate)
3350                 return false;
3351
3352         /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
3353         bitrate = cfg80211_calculate_bitrate(info);
3354         /* report 16-bit bitrate only if we can */
3355         bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0;
3356         if (bitrate > 0 &&
3357             nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate))
3358                 return false;
3359         if (bitrate_compat > 0 &&
3360             nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat))
3361                 return false;
3362
3363         if (info->flags & RATE_INFO_FLAGS_MCS) {
3364                 if (nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs))
3365                         return false;
3366                 if (info->flags & RATE_INFO_FLAGS_40_MHZ_WIDTH &&
3367                     nla_put_flag(msg, NL80211_RATE_INFO_40_MHZ_WIDTH))
3368                         return false;
3369                 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
3370                     nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
3371                         return false;
3372         } else if (info->flags & RATE_INFO_FLAGS_VHT_MCS) {
3373                 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_MCS, info->mcs))
3374                         return false;
3375                 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_NSS, info->nss))
3376                         return false;
3377                 if (info->flags & RATE_INFO_FLAGS_40_MHZ_WIDTH &&
3378                     nla_put_flag(msg, NL80211_RATE_INFO_40_MHZ_WIDTH))
3379                         return false;
3380                 if (info->flags & RATE_INFO_FLAGS_80_MHZ_WIDTH &&
3381                     nla_put_flag(msg, NL80211_RATE_INFO_80_MHZ_WIDTH))
3382                         return false;
3383                 if (info->flags & RATE_INFO_FLAGS_80P80_MHZ_WIDTH &&
3384                     nla_put_flag(msg, NL80211_RATE_INFO_80P80_MHZ_WIDTH))
3385                         return false;
3386                 if (info->flags & RATE_INFO_FLAGS_160_MHZ_WIDTH &&
3387                     nla_put_flag(msg, NL80211_RATE_INFO_160_MHZ_WIDTH))
3388                         return false;
3389                 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
3390                     nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
3391                         return false;
3392         }
3393
3394         nla_nest_end(msg, rate);
3395         return true;
3396 }
3397
3398 static bool nl80211_put_signal(struct sk_buff *msg, u8 mask, s8 *signal,
3399                                int id)
3400 {
3401         void *attr;
3402         int i = 0;
3403
3404         if (!mask)
3405                 return true;
3406
3407         attr = nla_nest_start(msg, id);
3408         if (!attr)
3409                 return false;
3410
3411         for (i = 0; i < IEEE80211_MAX_CHAINS; i++) {
3412                 if (!(mask & BIT(i)))
3413                         continue;
3414
3415                 if (nla_put_u8(msg, i, signal[i]))
3416                         return false;
3417         }
3418
3419         nla_nest_end(msg, attr);
3420
3421         return true;
3422 }
3423
3424 static int nl80211_send_station(struct sk_buff *msg, u32 portid, u32 seq,
3425                                 int flags,
3426                                 struct cfg80211_registered_device *rdev,
3427                                 struct net_device *dev,
3428                                 const u8 *mac_addr, struct station_info *sinfo)
3429 {
3430         void *hdr;
3431         struct nlattr *sinfoattr, *bss_param;
3432
3433         hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_STATION);
3434         if (!hdr)
3435                 return -1;
3436
3437         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3438             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
3439             nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation))
3440                 goto nla_put_failure;
3441
3442         sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO);
3443         if (!sinfoattr)
3444                 goto nla_put_failure;
3445         if ((sinfo->filled & STATION_INFO_CONNECTED_TIME) &&
3446             nla_put_u32(msg, NL80211_STA_INFO_CONNECTED_TIME,
3447                         sinfo->connected_time))
3448                 goto nla_put_failure;
3449         if ((sinfo->filled & STATION_INFO_INACTIVE_TIME) &&
3450             nla_put_u32(msg, NL80211_STA_INFO_INACTIVE_TIME,
3451                         sinfo->inactive_time))
3452                 goto nla_put_failure;
3453         if ((sinfo->filled & (STATION_INFO_RX_BYTES |
3454                               STATION_INFO_RX_BYTES64)) &&
3455             nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES,
3456                         (u32)sinfo->rx_bytes))
3457                 goto nla_put_failure;
3458         if ((sinfo->filled & (STATION_INFO_TX_BYTES |
3459                               STATION_INFO_TX_BYTES64)) &&
3460             nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES,
3461                         (u32)sinfo->tx_bytes))
3462                 goto nla_put_failure;
3463         if ((sinfo->filled & STATION_INFO_RX_BYTES64) &&
3464             nla_put_u64(msg, NL80211_STA_INFO_RX_BYTES64,
3465                         sinfo->rx_bytes))
3466                 goto nla_put_failure;
3467         if ((sinfo->filled & STATION_INFO_TX_BYTES64) &&
3468             nla_put_u64(msg, NL80211_STA_INFO_TX_BYTES64,
3469                         sinfo->tx_bytes))
3470                 goto nla_put_failure;
3471         if ((sinfo->filled & STATION_INFO_LLID) &&
3472             nla_put_u16(msg, NL80211_STA_INFO_LLID, sinfo->llid))
3473                 goto nla_put_failure;
3474         if ((sinfo->filled & STATION_INFO_PLID) &&
3475             nla_put_u16(msg, NL80211_STA_INFO_PLID, sinfo->plid))
3476                 goto nla_put_failure;
3477         if ((sinfo->filled & STATION_INFO_PLINK_STATE) &&
3478             nla_put_u8(msg, NL80211_STA_INFO_PLINK_STATE,
3479                        sinfo->plink_state))
3480                 goto nla_put_failure;
3481         switch (rdev->wiphy.signal_type) {
3482         case CFG80211_SIGNAL_TYPE_MBM:
3483                 if ((sinfo->filled & STATION_INFO_SIGNAL) &&
3484                     nla_put_u8(msg, NL80211_STA_INFO_SIGNAL,
3485                                sinfo->signal))
3486                         goto nla_put_failure;
3487                 if ((sinfo->filled & STATION_INFO_SIGNAL_AVG) &&
3488                     nla_put_u8(msg, NL80211_STA_INFO_SIGNAL_AVG,
3489                                sinfo->signal_avg))
3490                         goto nla_put_failure;
3491                 break;
3492         default:
3493                 break;
3494         }
3495         if (sinfo->filled & STATION_INFO_CHAIN_SIGNAL) {
3496                 if (!nl80211_put_signal(msg, sinfo->chains,
3497                                         sinfo->chain_signal,
3498                                         NL80211_STA_INFO_CHAIN_SIGNAL))
3499                         goto nla_put_failure;
3500         }
3501         if (sinfo->filled & STATION_INFO_CHAIN_SIGNAL_AVG) {
3502                 if (!nl80211_put_signal(msg, sinfo->chains,
3503                                         sinfo->chain_signal_avg,
3504                                         NL80211_STA_INFO_CHAIN_SIGNAL_AVG))
3505                         goto nla_put_failure;
3506         }
3507         if (sinfo->filled & STATION_INFO_TX_BITRATE) {
3508                 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
3509                                           NL80211_STA_INFO_TX_BITRATE))
3510                         goto nla_put_failure;
3511         }
3512         if (sinfo->filled & STATION_INFO_RX_BITRATE) {
3513                 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
3514                                           NL80211_STA_INFO_RX_BITRATE))
3515                         goto nla_put_failure;
3516         }
3517         if ((sinfo->filled & STATION_INFO_RX_PACKETS) &&
3518             nla_put_u32(msg, NL80211_STA_INFO_RX_PACKETS,
3519                         sinfo->rx_packets))
3520                 goto nla_put_failure;
3521         if ((sinfo->filled & STATION_INFO_TX_PACKETS) &&
3522             nla_put_u32(msg, NL80211_STA_INFO_TX_PACKETS,
3523                         sinfo->tx_packets))
3524                 goto nla_put_failure;
3525         if ((sinfo->filled & STATION_INFO_TX_RETRIES) &&
3526             nla_put_u32(msg, NL80211_STA_INFO_TX_RETRIES,
3527                         sinfo->tx_retries))
3528                 goto nla_put_failure;
3529         if ((sinfo->filled & STATION_INFO_TX_FAILED) &&
3530             nla_put_u32(msg, NL80211_STA_INFO_TX_FAILED,
3531                         sinfo->tx_failed))
3532                 goto nla_put_failure;
3533         if ((sinfo->filled & STATION_INFO_BEACON_LOSS_COUNT) &&
3534             nla_put_u32(msg, NL80211_STA_INFO_BEACON_LOSS,
3535                         sinfo->beacon_loss_count))
3536                 goto nla_put_failure;
3537         if ((sinfo->filled & STATION_INFO_LOCAL_PM) &&
3538             nla_put_u32(msg, NL80211_STA_INFO_LOCAL_PM,
3539                         sinfo->local_pm))
3540                 goto nla_put_failure;
3541         if ((sinfo->filled & STATION_INFO_PEER_PM) &&
3542             nla_put_u32(msg, NL80211_STA_INFO_PEER_PM,
3543                         sinfo->peer_pm))
3544                 goto nla_put_failure;
3545         if ((sinfo->filled & STATION_INFO_NONPEER_PM) &&
3546             nla_put_u32(msg, NL80211_STA_INFO_NONPEER_PM,
3547                         sinfo->nonpeer_pm))
3548                 goto nla_put_failure;
3549         if (sinfo->filled & STATION_INFO_BSS_PARAM) {
3550                 bss_param = nla_nest_start(msg, NL80211_STA_INFO_BSS_PARAM);
3551                 if (!bss_param)
3552                         goto nla_put_failure;
3553
3554                 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) &&
3555                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) ||
3556                     ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) &&
3557                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) ||
3558                     ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) &&
3559                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) ||
3560                     nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
3561                                sinfo->bss_param.dtim_period) ||
3562                     nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
3563                                 sinfo->bss_param.beacon_interval))
3564                         goto nla_put_failure;
3565
3566                 nla_nest_end(msg, bss_param);
3567         }
3568         if ((sinfo->filled & STATION_INFO_STA_FLAGS) &&
3569             nla_put(msg, NL80211_STA_INFO_STA_FLAGS,
3570                     sizeof(struct nl80211_sta_flag_update),
3571                     &sinfo->sta_flags))
3572                 goto nla_put_failure;
3573         if ((sinfo->filled & STATION_INFO_T_OFFSET) &&
3574                 nla_put_u64(msg, NL80211_STA_INFO_T_OFFSET,
3575                             sinfo->t_offset))
3576                 goto nla_put_failure;
3577         nla_nest_end(msg, sinfoattr);
3578
3579         if ((sinfo->filled & STATION_INFO_ASSOC_REQ_IES) &&
3580             nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
3581                     sinfo->assoc_req_ies))
3582                 goto nla_put_failure;
3583
3584         return genlmsg_end(msg, hdr);
3585
3586  nla_put_failure:
3587         genlmsg_cancel(msg, hdr);
3588         return -EMSGSIZE;
3589 }
3590
3591 static int nl80211_dump_station(struct sk_buff *skb,
3592                                 struct netlink_callback *cb)
3593 {
3594         struct station_info sinfo;
3595         struct cfg80211_registered_device *dev;
3596         struct wireless_dev *wdev;
3597         u8 mac_addr[ETH_ALEN];
3598         int sta_idx = cb->args[2];
3599         int err;
3600
3601         err = nl80211_prepare_wdev_dump(skb, cb, &dev, &wdev);
3602         if (err)
3603                 return err;
3604
3605         if (!wdev->netdev) {
3606                 err = -EINVAL;
3607                 goto out_err;
3608         }
3609
3610         if (!dev->ops->dump_station) {
3611                 err = -EOPNOTSUPP;
3612                 goto out_err;
3613         }
3614
3615         while (1) {
3616                 memset(&sinfo, 0, sizeof(sinfo));
3617                 err = rdev_dump_station(dev, wdev->netdev, sta_idx,
3618                                         mac_addr, &sinfo);
3619                 if (err == -ENOENT)
3620                         break;
3621                 if (err)
3622                         goto out_err;
3623
3624                 if (nl80211_send_station(skb,
3625                                 NETLINK_CB(cb->skb).portid,
3626                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
3627                                 dev, wdev->netdev, mac_addr,
3628                                 &sinfo) < 0)
3629                         goto out;
3630
3631                 sta_idx++;
3632         }
3633
3634
3635  out:
3636         cb->args[2] = sta_idx;
3637         err = skb->len;
3638  out_err:
3639         nl80211_finish_wdev_dump(dev);
3640
3641         return err;
3642 }
3643
3644 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
3645 {
3646         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3647         struct net_device *dev = info->user_ptr[1];
3648         struct station_info sinfo;
3649         struct sk_buff *msg;
3650         u8 *mac_addr = NULL;
3651         int err;
3652
3653         memset(&sinfo, 0, sizeof(sinfo));
3654
3655         if (!info->attrs[NL80211_ATTR_MAC])
3656                 return -EINVAL;
3657
3658         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3659
3660         if (!rdev->ops->get_station)
3661                 return -EOPNOTSUPP;
3662
3663         err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
3664         if (err)
3665                 return err;
3666
3667         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3668         if (!msg)
3669                 return -ENOMEM;
3670
3671         if (nl80211_send_station(msg, info->snd_portid, info->snd_seq, 0,
3672                                  rdev, dev, mac_addr, &sinfo) < 0) {
3673                 nlmsg_free(msg);
3674                 return -ENOBUFS;
3675         }
3676
3677         return genlmsg_reply(msg, info);
3678 }
3679
3680 int cfg80211_check_station_change(struct wiphy *wiphy,
3681                                   struct station_parameters *params,
3682                                   enum cfg80211_station_type statype)
3683 {
3684         if (params->listen_interval != -1)
3685                 return -EINVAL;
3686         if (params->aid)
3687                 return -EINVAL;
3688
3689         /* When you run into this, adjust the code below for the new flag */
3690         BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
3691
3692         switch (statype) {
3693         case CFG80211_STA_MESH_PEER_KERNEL:
3694         case CFG80211_STA_MESH_PEER_USER:
3695                 /*
3696                  * No ignoring the TDLS flag here -- the userspace mesh
3697                  * code doesn't have the bug of including TDLS in the
3698                  * mask everywhere.
3699                  */
3700                 if (params->sta_flags_mask &
3701                                 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3702                                   BIT(NL80211_STA_FLAG_MFP) |
3703                                   BIT(NL80211_STA_FLAG_AUTHORIZED)))
3704                         return -EINVAL;
3705                 break;
3706         case CFG80211_STA_TDLS_PEER_SETUP:
3707         case CFG80211_STA_TDLS_PEER_ACTIVE:
3708                 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
3709                         return -EINVAL;
3710                 /* ignore since it can't change */
3711                 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
3712                 break;
3713         default:
3714                 /* disallow mesh-specific things */
3715                 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
3716                         return -EINVAL;
3717                 if (params->local_pm)
3718                         return -EINVAL;
3719                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
3720                         return -EINVAL;
3721         }
3722
3723         if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
3724             statype != CFG80211_STA_TDLS_PEER_ACTIVE) {
3725                 /* TDLS can't be set, ... */
3726                 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
3727                         return -EINVAL;
3728                 /*
3729                  * ... but don't bother the driver with it. This works around
3730                  * a hostapd/wpa_supplicant issue -- it always includes the
3731                  * TLDS_PEER flag in the mask even for AP mode.
3732                  */
3733                 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
3734         }
3735
3736         if (statype != CFG80211_STA_TDLS_PEER_SETUP) {
3737                 /* reject other things that can't change */
3738                 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD)
3739                         return -EINVAL;
3740                 if (params->sta_modify_mask & STATION_PARAM_APPLY_CAPABILITY)
3741                         return -EINVAL;
3742                 if (params->supported_rates)
3743                         return -EINVAL;
3744                 if (params->ext_capab || params->ht_capa || params->vht_capa)
3745                         return -EINVAL;
3746         }
3747
3748         if (statype != CFG80211_STA_AP_CLIENT) {
3749                 if (params->vlan)
3750                         return -EINVAL;
3751         }
3752
3753         switch (statype) {
3754         case CFG80211_STA_AP_MLME_CLIENT:
3755                 /* Use this only for authorizing/unauthorizing a station */
3756                 if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)))
3757                         return -EOPNOTSUPP;
3758                 break;
3759         case CFG80211_STA_AP_CLIENT:
3760                 /* accept only the listed bits */
3761                 if (params->sta_flags_mask &
3762                                 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
3763                                   BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3764                                   BIT(NL80211_STA_FLAG_ASSOCIATED) |
3765                                   BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
3766                                   BIT(NL80211_STA_FLAG_WME) |
3767                                   BIT(NL80211_STA_FLAG_MFP)))
3768                         return -EINVAL;
3769
3770                 /* but authenticated/associated only if driver handles it */
3771                 if (!(wiphy->features & NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
3772                     params->sta_flags_mask &
3773                                 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3774                                  BIT(NL80211_STA_FLAG_ASSOCIATED)))
3775                         return -EINVAL;
3776                 break;
3777         case CFG80211_STA_IBSS:
3778         case CFG80211_STA_AP_STA:
3779                 /* reject any changes other than AUTHORIZED */
3780                 if (params->sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
3781                         return -EINVAL;
3782                 break;
3783         case CFG80211_STA_TDLS_PEER_SETUP:
3784                 /* reject any changes other than AUTHORIZED or WME */
3785                 if (params->sta_flags_mask & ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
3786                                                BIT(NL80211_STA_FLAG_WME)))
3787                         return -EINVAL;
3788                 /* force (at least) rates when authorizing */
3789                 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED) &&
3790                     !params->supported_rates)
3791                         return -EINVAL;
3792                 break;
3793         case CFG80211_STA_TDLS_PEER_ACTIVE:
3794                 /* reject any changes */
3795                 return -EINVAL;
3796         case CFG80211_STA_MESH_PEER_KERNEL:
3797                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
3798                         return -EINVAL;
3799                 break;
3800         case CFG80211_STA_MESH_PEER_USER:
3801                 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
3802                         return -EINVAL;
3803                 break;
3804         }
3805
3806         return 0;
3807 }
3808 EXPORT_SYMBOL(cfg80211_check_station_change);
3809
3810 /*
3811  * Get vlan interface making sure it is running and on the right wiphy.
3812  */
3813 static struct net_device *get_vlan(struct genl_info *info,
3814                                    struct cfg80211_registered_device *rdev)
3815 {
3816         struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
3817         struct net_device *v;
3818         int ret;
3819
3820         if (!vlanattr)
3821                 return NULL;
3822
3823         v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr));
3824         if (!v)
3825                 return ERR_PTR(-ENODEV);
3826
3827         if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) {
3828                 ret = -EINVAL;
3829                 goto error;
3830         }
3831
3832         if (v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
3833             v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3834             v->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
3835                 ret = -EINVAL;
3836                 goto error;
3837         }
3838
3839         if (!netif_running(v)) {
3840                 ret = -ENETDOWN;
3841                 goto error;
3842         }
3843
3844         return v;
3845  error:
3846         dev_put(v);
3847         return ERR_PTR(ret);
3848 }
3849
3850 static struct nla_policy
3851 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] __read_mostly = {
3852         [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
3853         [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
3854 };
3855
3856 static int nl80211_parse_sta_wme(struct genl_info *info,
3857                                  struct station_parameters *params)
3858 {
3859         struct nlattr *tb[NL80211_STA_WME_MAX + 1];
3860         struct nlattr *nla;
3861         int err;
3862
3863         /* parse WME attributes if present */
3864         if (!info->attrs[NL80211_ATTR_STA_WME])
3865                 return 0;
3866
3867         nla = info->attrs[NL80211_ATTR_STA_WME];
3868         err = nla_parse_nested(tb, NL80211_STA_WME_MAX, nla,
3869                                nl80211_sta_wme_policy);
3870         if (err)
3871                 return err;
3872
3873         if (tb[NL80211_STA_WME_UAPSD_QUEUES])
3874                 params->uapsd_queues = nla_get_u8(
3875                         tb[NL80211_STA_WME_UAPSD_QUEUES]);
3876         if (params->uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
3877                 return -EINVAL;
3878
3879         if (tb[NL80211_STA_WME_MAX_SP])
3880                 params->max_sp = nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
3881
3882         if (params->max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
3883                 return -EINVAL;
3884
3885         params->sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
3886
3887         return 0;
3888 }
3889
3890 static int nl80211_set_station_tdls(struct genl_info *info,
3891                                     struct station_parameters *params)
3892 {
3893         /* Dummy STA entry gets updated once the peer capabilities are known */
3894         if (info->attrs[NL80211_ATTR_PEER_AID])
3895                 params->aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
3896         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
3897                 params->ht_capa =
3898                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
3899         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
3900                 params->vht_capa =
3901                         nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
3902
3903         return nl80211_parse_sta_wme(info, params);
3904 }
3905
3906 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
3907 {
3908         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3909         struct net_device *dev = info->user_ptr[1];
3910         struct station_parameters params;
3911         u8 *mac_addr;
3912         int err;
3913
3914         memset(&params, 0, sizeof(params));
3915
3916         params.listen_interval = -1;
3917
3918         if (!rdev->ops->change_station)
3919                 return -EOPNOTSUPP;
3920
3921         if (info->attrs[NL80211_ATTR_STA_AID])
3922                 return -EINVAL;
3923
3924         if (!info->attrs[NL80211_ATTR_MAC])
3925                 return -EINVAL;
3926
3927         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3928
3929         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
3930                 params.supported_rates =
3931                         nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
3932                 params.supported_rates_len =
3933                         nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
3934         }
3935
3936         if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
3937                 params.capability =
3938                         nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
3939                 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
3940         }
3941
3942         if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
3943                 params.ext_capab =
3944                         nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
3945                 params.ext_capab_len =
3946                         nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
3947         }
3948
3949         if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
3950                 return -EINVAL;
3951
3952         if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
3953                 return -EINVAL;
3954
3955         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
3956                 params.plink_action =
3957                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
3958                 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
3959                         return -EINVAL;
3960         }
3961
3962         if (info->attrs[NL80211_ATTR_STA_PLINK_STATE]) {
3963                 params.plink_state =
3964                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
3965                 if (params.plink_state >= NUM_NL80211_PLINK_STATES)
3966                         return -EINVAL;
3967                 params.sta_modify_mask |= STATION_PARAM_APPLY_PLINK_STATE;
3968         }
3969
3970         if (info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]) {
3971                 enum nl80211_mesh_power_mode pm = nla_get_u32(
3972                         info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]);
3973
3974                 if (pm <= NL80211_MESH_POWER_UNKNOWN ||
3975                     pm > NL80211_MESH_POWER_MAX)
3976                         return -EINVAL;
3977
3978                 params.local_pm = pm;
3979         }
3980
3981         /* Include parameters for TDLS peer (will check later) */
3982         err = nl80211_set_station_tdls(info, &params);
3983         if (err)
3984                 return err;
3985
3986         params.vlan = get_vlan(info, rdev);
3987         if (IS_ERR(params.vlan))
3988                 return PTR_ERR(params.vlan);
3989
3990         switch (dev->ieee80211_ptr->iftype) {
3991         case NL80211_IFTYPE_AP:
3992         case NL80211_IFTYPE_AP_VLAN:
3993         case NL80211_IFTYPE_P2P_GO:
3994         case NL80211_IFTYPE_P2P_CLIENT:
3995         case NL80211_IFTYPE_STATION:
3996         case NL80211_IFTYPE_ADHOC:
3997         case NL80211_IFTYPE_MESH_POINT:
3998                 break;
3999         default:
4000                 err = -EOPNOTSUPP;
4001                 goto out_put_vlan;
4002         }
4003
4004         /* driver will call cfg80211_check_station_change() */
4005         err = rdev_change_station(rdev, dev, mac_addr, &params);
4006
4007  out_put_vlan:
4008         if (params.vlan)
4009                 dev_put(params.vlan);
4010
4011         return err;
4012 }
4013
4014 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
4015 {
4016         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4017         int err;
4018         struct net_device *dev = info->user_ptr[1];
4019         struct station_parameters params;
4020         u8 *mac_addr = NULL;
4021
4022         memset(&params, 0, sizeof(params));
4023
4024         if (!rdev->ops->add_station)
4025                 return -EOPNOTSUPP;
4026
4027         if (!info->attrs[NL80211_ATTR_MAC])
4028                 return -EINVAL;
4029
4030         if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
4031                 return -EINVAL;
4032
4033         if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
4034                 return -EINVAL;
4035
4036         if (!info->attrs[NL80211_ATTR_STA_AID] &&
4037             !info->attrs[NL80211_ATTR_PEER_AID])
4038                 return -EINVAL;
4039
4040         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4041         params.supported_rates =
4042                 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4043         params.supported_rates_len =
4044                 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4045         params.listen_interval =
4046                 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
4047
4048         if (info->attrs[NL80211_ATTR_PEER_AID])
4049                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
4050         else
4051                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
4052         if (!params.aid || params.aid > IEEE80211_MAX_AID)
4053                 return -EINVAL;
4054
4055         if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
4056                 params.capability =
4057                         nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
4058                 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
4059         }
4060
4061         if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
4062                 params.ext_capab =
4063                         nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4064                 params.ext_capab_len =
4065                         nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4066         }
4067
4068         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
4069                 params.ht_capa =
4070                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
4071
4072         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
4073                 params.vht_capa =
4074                         nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
4075
4076         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
4077                 params.plink_action =
4078                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
4079                 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
4080                         return -EINVAL;
4081         }
4082
4083         err = nl80211_parse_sta_wme(info, &params);
4084         if (err)
4085                 return err;
4086
4087         if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
4088                 return -EINVAL;
4089
4090         /* When you run into this, adjust the code below for the new flag */
4091         BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
4092
4093         switch (dev->ieee80211_ptr->iftype) {
4094         case NL80211_IFTYPE_AP:
4095         case NL80211_IFTYPE_AP_VLAN:
4096         case NL80211_IFTYPE_P2P_GO:
4097                 /* ignore WME attributes if iface/sta is not capable */
4098                 if (!(rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) ||
4099                     !(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)))
4100                         params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4101
4102                 /* TDLS peers cannot be added */
4103                 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
4104                     info->attrs[NL80211_ATTR_PEER_AID])
4105                         return -EINVAL;
4106                 /* but don't bother the driver with it */
4107                 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
4108
4109                 /* allow authenticated/associated only if driver handles it */
4110                 if (!(rdev->wiphy.features &
4111                                 NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
4112                     params.sta_flags_mask &
4113                                 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4114                                  BIT(NL80211_STA_FLAG_ASSOCIATED)))
4115                         return -EINVAL;
4116
4117                 /* must be last in here for error handling */
4118                 params.vlan = get_vlan(info, rdev);
4119                 if (IS_ERR(params.vlan))
4120                         return PTR_ERR(params.vlan);
4121                 break;
4122         case NL80211_IFTYPE_MESH_POINT:
4123                 /* ignore uAPSD data */
4124                 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4125
4126                 /* associated is disallowed */
4127                 if (params.sta_flags_mask & BIT(NL80211_STA_FLAG_ASSOCIATED))
4128                         return -EINVAL;
4129                 /* TDLS peers cannot be added */
4130                 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
4131                     info->attrs[NL80211_ATTR_PEER_AID])
4132                         return -EINVAL;
4133                 break;
4134         case NL80211_IFTYPE_STATION:
4135         case NL80211_IFTYPE_P2P_CLIENT:
4136                 /* ignore uAPSD data */
4137                 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4138
4139                 /* these are disallowed */
4140                 if (params.sta_flags_mask &
4141                                 (BIT(NL80211_STA_FLAG_ASSOCIATED) |
4142                                  BIT(NL80211_STA_FLAG_AUTHENTICATED)))
4143                         return -EINVAL;
4144                 /* Only TDLS peers can be added */
4145                 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
4146                         return -EINVAL;
4147                 /* Can only add if TDLS ... */
4148                 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS))
4149                         return -EOPNOTSUPP;
4150                 /* ... with external setup is supported */
4151                 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP))
4152                         return -EOPNOTSUPP;
4153                 /*
4154                  * Older wpa_supplicant versions always mark the TDLS peer
4155                  * as authorized, but it shouldn't yet be.
4156                  */
4157                 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_AUTHORIZED);
4158                 break;
4159         default:
4160                 return -EOPNOTSUPP;
4161         }
4162
4163         /* be aware of params.vlan when changing code here */
4164
4165         err = rdev_add_station(rdev, dev, mac_addr, &params);
4166
4167         if (params.vlan)
4168                 dev_put(params.vlan);
4169         return err;
4170 }
4171
4172 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
4173 {
4174         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4175         struct net_device *dev = info->user_ptr[1];
4176         u8 *mac_addr = NULL;
4177
4178         if (info->attrs[NL80211_ATTR_MAC])
4179                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4180
4181         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4182             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
4183             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
4184             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4185                 return -EINVAL;
4186
4187         if (!rdev->ops->del_station)
4188                 return -EOPNOTSUPP;
4189
4190         return rdev_del_station(rdev, dev, mac_addr);
4191 }
4192
4193 static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq,
4194                                 int flags, struct net_device *dev,
4195                                 u8 *dst, u8 *next_hop,
4196                                 struct mpath_info *pinfo)
4197 {
4198         void *hdr;
4199         struct nlattr *pinfoattr;
4200
4201         hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_STATION);
4202         if (!hdr)
4203                 return -1;
4204
4205         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
4206             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
4207             nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) ||
4208             nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation))
4209                 goto nla_put_failure;
4210
4211         pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO);
4212         if (!pinfoattr)
4213                 goto nla_put_failure;
4214         if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) &&
4215             nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
4216                         pinfo->frame_qlen))
4217                 goto nla_put_failure;
4218         if (((pinfo->filled & MPATH_INFO_SN) &&
4219              nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) ||
4220             ((pinfo->filled & MPATH_INFO_METRIC) &&
4221              nla_put_u32(msg, NL80211_MPATH_INFO_METRIC,
4222                          pinfo->metric)) ||
4223             ((pinfo->filled & MPATH_INFO_EXPTIME) &&
4224              nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME,
4225                          pinfo->exptime)) ||
4226             ((pinfo->filled & MPATH_INFO_FLAGS) &&
4227              nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS,
4228                         pinfo->flags)) ||
4229             ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) &&
4230              nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
4231                          pinfo->discovery_timeout)) ||
4232             ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) &&
4233              nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
4234                         pinfo->discovery_retries)))
4235                 goto nla_put_failure;
4236
4237         nla_nest_end(msg, pinfoattr);
4238
4239         return genlmsg_end(msg, hdr);
4240
4241  nla_put_failure:
4242         genlmsg_cancel(msg, hdr);
4243         return -EMSGSIZE;
4244 }
4245
4246 static int nl80211_dump_mpath(struct sk_buff *skb,
4247                               struct netlink_callback *cb)
4248 {
4249         struct mpath_info pinfo;
4250         struct cfg80211_registered_device *dev;
4251         struct wireless_dev *wdev;
4252         u8 dst[ETH_ALEN];
4253         u8 next_hop[ETH_ALEN];
4254         int path_idx = cb->args[2];
4255         int err;
4256
4257         err = nl80211_prepare_wdev_dump(skb, cb, &dev, &wdev);
4258         if (err)
4259                 return err;
4260
4261         if (!dev->ops->dump_mpath) {
4262                 err = -EOPNOTSUPP;
4263                 goto out_err;
4264         }
4265
4266         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
4267                 err = -EOPNOTSUPP;
4268                 goto out_err;
4269         }
4270
4271         while (1) {
4272                 err = rdev_dump_mpath(dev, wdev->netdev, path_idx, dst,
4273                                       next_hop, &pinfo);
4274                 if (err == -ENOENT)
4275                         break;
4276                 if (err)
4277                         goto out_err;
4278
4279                 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
4280                                        cb->nlh->nlmsg_seq, NLM_F_MULTI,
4281                                        wdev->netdev, dst, next_hop,
4282                                        &pinfo) < 0)
4283                         goto out;
4284
4285                 path_idx++;
4286         }
4287
4288
4289  out:
4290         cb->args[2] = path_idx;
4291         err = skb->len;
4292  out_err:
4293         nl80211_finish_wdev_dump(dev);
4294         return err;
4295 }
4296
4297 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
4298 {
4299         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4300         int err;
4301         struct net_device *dev = info->user_ptr[1];
4302         struct mpath_info pinfo;
4303         struct sk_buff *msg;
4304         u8 *dst = NULL;
4305         u8 next_hop[ETH_ALEN];
4306
4307         memset(&pinfo, 0, sizeof(pinfo));
4308
4309         if (!info->attrs[NL80211_ATTR_MAC])
4310                 return -EINVAL;
4311
4312         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4313
4314         if (!rdev->ops->get_mpath)
4315                 return -EOPNOTSUPP;
4316
4317         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4318                 return -EOPNOTSUPP;
4319
4320         err = rdev_get_mpath(rdev, dev, dst, next_hop, &pinfo);
4321         if (err)
4322                 return err;
4323
4324         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4325         if (!msg)
4326                 return -ENOMEM;
4327
4328         if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
4329                                  dev, dst, next_hop, &pinfo) < 0) {
4330                 nlmsg_free(msg);
4331                 return -ENOBUFS;
4332         }
4333
4334         return genlmsg_reply(msg, info);
4335 }
4336
4337 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
4338 {
4339         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4340         struct net_device *dev = info->user_ptr[1];
4341         u8 *dst = NULL;
4342         u8 *next_hop = NULL;
4343
4344         if (!info->attrs[NL80211_ATTR_MAC])
4345                 return -EINVAL;
4346
4347         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
4348                 return -EINVAL;
4349
4350         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4351         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
4352
4353         if (!rdev->ops->change_mpath)
4354                 return -EOPNOTSUPP;
4355
4356         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4357                 return -EOPNOTSUPP;
4358
4359         return rdev_change_mpath(rdev, dev, dst, next_hop);
4360 }
4361
4362 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
4363 {
4364         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4365         struct net_device *dev = info->user_ptr[1];
4366         u8 *dst = NULL;
4367         u8 *next_hop = NULL;
4368
4369         if (!info->attrs[NL80211_ATTR_MAC])
4370                 return -EINVAL;
4371
4372         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
4373                 return -EINVAL;
4374
4375         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4376         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
4377
4378         if (!rdev->ops->add_mpath)
4379                 return -EOPNOTSUPP;
4380
4381         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4382                 return -EOPNOTSUPP;
4383
4384         return rdev_add_mpath(rdev, dev, dst, next_hop);
4385 }
4386
4387 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
4388 {
4389         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4390         struct net_device *dev = info->user_ptr[1];
4391         u8 *dst = NULL;
4392
4393         if (info->attrs[NL80211_ATTR_MAC])
4394                 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4395
4396         if (!rdev->ops->del_mpath)
4397                 return -EOPNOTSUPP;
4398
4399         return rdev_del_mpath(rdev, dev, dst);
4400 }
4401
4402 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
4403 {
4404         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4405         struct net_device *dev = info->user_ptr[1];
4406         struct bss_parameters params;
4407
4408         memset(&params, 0, sizeof(params));
4409         /* default to not changing parameters */
4410         params.use_cts_prot = -1;
4411         params.use_short_preamble = -1;
4412         params.use_short_slot_time = -1;
4413         params.ap_isolate = -1;
4414         params.ht_opmode = -1;
4415         params.p2p_ctwindow = -1;
4416         params.p2p_opp_ps = -1;
4417
4418         if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
4419                 params.use_cts_prot =
4420                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
4421         if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
4422                 params.use_short_preamble =
4423                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
4424         if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
4425                 params.use_short_slot_time =
4426                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
4427         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
4428                 params.basic_rates =
4429                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4430                 params.basic_rates_len =
4431                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4432         }
4433         if (info->attrs[NL80211_ATTR_AP_ISOLATE])
4434                 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
4435         if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
4436                 params.ht_opmode =
4437                         nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
4438
4439         if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
4440                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4441                         return -EINVAL;
4442                 params.p2p_ctwindow =
4443                         nla_get_s8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
4444                 if (params.p2p_ctwindow < 0)
4445                         return -EINVAL;
4446                 if (params.p2p_ctwindow != 0 &&
4447                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
4448                         return -EINVAL;
4449         }
4450
4451         if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
4452                 u8 tmp;
4453
4454                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4455                         return -EINVAL;
4456                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
4457                 if (tmp > 1)
4458                         return -EINVAL;
4459                 params.p2p_opp_ps = tmp;
4460                 if (params.p2p_opp_ps &&
4461                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
4462                         return -EINVAL;
4463         }
4464
4465         if (!rdev->ops->change_bss)
4466                 return -EOPNOTSUPP;
4467
4468         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4469             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4470                 return -EOPNOTSUPP;
4471
4472         return rdev_change_bss(rdev, dev, &params);
4473 }
4474
4475 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
4476         [NL80211_ATTR_REG_RULE_FLAGS]           = { .type = NLA_U32 },
4477         [NL80211_ATTR_FREQ_RANGE_START]         = { .type = NLA_U32 },
4478         [NL80211_ATTR_FREQ_RANGE_END]           = { .type = NLA_U32 },
4479         [NL80211_ATTR_FREQ_RANGE_MAX_BW]        = { .type = NLA_U32 },
4480         [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]  = { .type = NLA_U32 },
4481         [NL80211_ATTR_POWER_RULE_MAX_EIRP]      = { .type = NLA_U32 },
4482 };
4483
4484 static int parse_reg_rule(struct nlattr *tb[],
4485         struct ieee80211_reg_rule *reg_rule)
4486 {
4487         struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
4488         struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
4489
4490         if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
4491                 return -EINVAL;
4492         if (!tb[NL80211_ATTR_FREQ_RANGE_START])
4493                 return -EINVAL;
4494         if (!tb[NL80211_ATTR_FREQ_RANGE_END])
4495                 return -EINVAL;
4496         if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
4497                 return -EINVAL;
4498         if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
4499                 return -EINVAL;
4500
4501         reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
4502
4503         freq_range->start_freq_khz =
4504                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
4505         freq_range->end_freq_khz =
4506                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
4507         freq_range->max_bandwidth_khz =
4508                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
4509
4510         power_rule->max_eirp =
4511                 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
4512
4513         if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
4514                 power_rule->max_antenna_gain =
4515                         nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
4516
4517         return 0;
4518 }
4519
4520 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
4521 {
4522         int r;
4523         char *data = NULL;
4524         enum nl80211_user_reg_hint_type user_reg_hint_type;
4525
4526         /*
4527          * You should only get this when cfg80211 hasn't yet initialized
4528          * completely when built-in to the kernel right between the time
4529          * window between nl80211_init() and regulatory_init(), if that is
4530          * even possible.
4531          */
4532         if (unlikely(!rcu_access_pointer(cfg80211_regdomain)))
4533                 return -EINPROGRESS;
4534
4535         if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
4536                 return -EINVAL;
4537
4538         data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
4539
4540         if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE])
4541                 user_reg_hint_type =
4542                   nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]);
4543         else
4544                 user_reg_hint_type = NL80211_USER_REG_HINT_USER;
4545
4546         switch (user_reg_hint_type) {
4547         case NL80211_USER_REG_HINT_USER:
4548         case NL80211_USER_REG_HINT_CELL_BASE:
4549                 break;
4550         default:
4551                 return -EINVAL;
4552         }
4553
4554         r = regulatory_hint_user(data, user_reg_hint_type);
4555
4556         return r;
4557 }
4558
4559 static int nl80211_get_mesh_config(struct sk_buff *skb,
4560                                    struct genl_info *info)
4561 {
4562         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4563         struct net_device *dev = info->user_ptr[1];
4564         struct wireless_dev *wdev = dev->ieee80211_ptr;
4565         struct mesh_config cur_params;
4566         int err = 0;
4567         void *hdr;
4568         struct nlattr *pinfoattr;
4569         struct sk_buff *msg;
4570
4571         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
4572                 return -EOPNOTSUPP;
4573
4574         if (!rdev->ops->get_mesh_config)
4575                 return -EOPNOTSUPP;
4576
4577         wdev_lock(wdev);
4578         /* If not connected, get default parameters */
4579         if (!wdev->mesh_id_len)
4580                 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
4581         else
4582                 err = rdev_get_mesh_config(rdev, dev, &cur_params);
4583         wdev_unlock(wdev);
4584
4585         if (err)
4586                 return err;
4587
4588         /* Draw up a netlink message to send back */
4589         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4590         if (!msg)
4591                 return -ENOMEM;
4592         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
4593                              NL80211_CMD_GET_MESH_CONFIG);
4594         if (!hdr)
4595                 goto out;
4596         pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG);
4597         if (!pinfoattr)
4598                 goto nla_put_failure;
4599         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
4600             nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
4601                         cur_params.dot11MeshRetryTimeout) ||
4602             nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
4603                         cur_params.dot11MeshConfirmTimeout) ||
4604             nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
4605                         cur_params.dot11MeshHoldingTimeout) ||
4606             nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
4607                         cur_params.dot11MeshMaxPeerLinks) ||
4608             nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES,
4609                        cur_params.dot11MeshMaxRetries) ||
4610             nla_put_u8(msg, NL80211_MESHCONF_TTL,
4611                        cur_params.dot11MeshTTL) ||
4612             nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL,
4613                        cur_params.element_ttl) ||
4614             nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
4615                        cur_params.auto_open_plinks) ||
4616             nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
4617                         cur_params.dot11MeshNbrOffsetMaxNeighbor) ||
4618             nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
4619                        cur_params.dot11MeshHWMPmaxPREQretries) ||
4620             nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
4621                         cur_params.path_refresh_time) ||
4622             nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
4623                         cur_params.min_discovery_timeout) ||
4624             nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
4625                         cur_params.dot11MeshHWMPactivePathTimeout) ||
4626             nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
4627                         cur_params.dot11MeshHWMPpreqMinInterval) ||
4628             nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
4629                         cur_params.dot11MeshHWMPperrMinInterval) ||
4630             nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
4631                         cur_params.dot11MeshHWMPnetDiameterTraversalTime) ||
4632             nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
4633                        cur_params.dot11MeshHWMPRootMode) ||
4634             nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
4635                         cur_params.dot11MeshHWMPRannInterval) ||
4636             nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
4637                        cur_params.dot11MeshGateAnnouncementProtocol) ||
4638             nla_put_u8(msg, NL80211_MESHCONF_FORWARDING,
4639                        cur_params.dot11MeshForwarding) ||
4640             nla_put_u32(msg, NL80211_MESHCONF_RSSI_THRESHOLD,
4641                         cur_params.rssi_threshold) ||
4642             nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE,
4643                         cur_params.ht_opmode) ||
4644             nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
4645                         cur_params.dot11MeshHWMPactivePathToRootTimeout) ||
4646             nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
4647                         cur_params.dot11MeshHWMProotInterval) ||
4648             nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
4649                         cur_params.dot11MeshHWMPconfirmationInterval) ||
4650             nla_put_u32(msg, NL80211_MESHCONF_POWER_MODE,
4651                         cur_params.power_mode) ||
4652             nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW,
4653                         cur_params.dot11MeshAwakeWindowDuration) ||
4654             nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT,
4655                         cur_params.plink_timeout))
4656                 goto nla_put_failure;
4657         nla_nest_end(msg, pinfoattr);
4658         genlmsg_end(msg, hdr);
4659         return genlmsg_reply(msg, info);
4660
4661  nla_put_failure:
4662         genlmsg_cancel(msg, hdr);
4663  out:
4664         nlmsg_free(msg);
4665         return -ENOBUFS;
4666 }
4667
4668 static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
4669         [NL80211_MESHCONF_RETRY_TIMEOUT] = { .type = NLA_U16 },
4670         [NL80211_MESHCONF_CONFIRM_TIMEOUT] = { .type = NLA_U16 },
4671         [NL80211_MESHCONF_HOLDING_TIMEOUT] = { .type = NLA_U16 },
4672         [NL80211_MESHCONF_MAX_PEER_LINKS] = { .type = NLA_U16 },
4673         [NL80211_MESHCONF_MAX_RETRIES] = { .type = NLA_U8 },
4674         [NL80211_MESHCONF_TTL] = { .type = NLA_U8 },
4675         [NL80211_MESHCONF_ELEMENT_TTL] = { .type = NLA_U8 },
4676         [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = { .type = NLA_U8 },
4677         [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] = { .type = NLA_U32 },
4678         [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
4679         [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
4680         [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = { .type = NLA_U16 },
4681         [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
4682         [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 },
4683         [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] = { .type = NLA_U16 },
4684         [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 },
4685         [NL80211_MESHCONF_HWMP_ROOTMODE] = { .type = NLA_U8 },
4686         [NL80211_MESHCONF_HWMP_RANN_INTERVAL] = { .type = NLA_U16 },
4687         [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = { .type = NLA_U8 },
4688         [NL80211_MESHCONF_FORWARDING] = { .type = NLA_U8 },
4689         [NL80211_MESHCONF_RSSI_THRESHOLD] = { .type = NLA_U32 },
4690         [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 },
4691         [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 },
4692         [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] = { .type = NLA_U16 },
4693         [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] = { .type = NLA_U16 },
4694         [NL80211_MESHCONF_POWER_MODE] = { .type = NLA_U32 },
4695         [NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 },
4696         [NL80211_MESHCONF_PLINK_TIMEOUT] = { .type = NLA_U32 },
4697 };
4698
4699 static const struct nla_policy
4700         nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
4701         [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 },
4702         [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
4703         [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
4704         [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
4705         [NL80211_MESH_SETUP_AUTH_PROTOCOL] = { .type = NLA_U8 },
4706         [NL80211_MESH_SETUP_USERSPACE_MPM] = { .type = NLA_FLAG },
4707         [NL80211_MESH_SETUP_IE] = { .type = NLA_BINARY,
4708                                     .len = IEEE80211_MAX_DATA_LEN },
4709         [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
4710 };
4711
4712 static int nl80211_parse_mesh_config(struct genl_info *info,
4713                                      struct mesh_config *cfg,
4714                                      u32 *mask_out)
4715 {
4716         struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
4717         u32 mask = 0;
4718
4719 #define FILL_IN_MESH_PARAM_IF_SET(tb, cfg, param, min, max, mask, attr, fn) \
4720 do {                                                                        \
4721         if (tb[attr]) {                                                     \
4722                 if (fn(tb[attr]) < min || fn(tb[attr]) > max)               \
4723                         return -EINVAL;                                     \
4724                 cfg->param = fn(tb[attr]);                                  \
4725                 mask |= (1 << (attr - 1));                                  \
4726         }                                                                   \
4727 } while (0)
4728
4729
4730         if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
4731                 return -EINVAL;
4732         if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX,
4733                              info->attrs[NL80211_ATTR_MESH_CONFIG],
4734                              nl80211_meshconf_params_policy))
4735                 return -EINVAL;
4736
4737         /* This makes sure that there aren't more than 32 mesh config
4738          * parameters (otherwise our bitfield scheme would not work.) */
4739         BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
4740
4741         /* Fill in the params struct */
4742         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, 1, 255,
4743                                   mask, NL80211_MESHCONF_RETRY_TIMEOUT,
4744                                   nla_get_u16);
4745         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, 1, 255,
4746                                   mask, NL80211_MESHCONF_CONFIRM_TIMEOUT,
4747                                   nla_get_u16);
4748         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, 1, 255,
4749                                   mask, NL80211_MESHCONF_HOLDING_TIMEOUT,
4750                                   nla_get_u16);
4751         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, 0, 255,
4752                                   mask, NL80211_MESHCONF_MAX_PEER_LINKS,
4753                                   nla_get_u16);
4754         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, 0, 16,
4755                                   mask, NL80211_MESHCONF_MAX_RETRIES,
4756                                   nla_get_u8);
4757         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, 1, 255,
4758                                   mask, NL80211_MESHCONF_TTL, nla_get_u8);
4759         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl, 1, 255,
4760                                   mask, NL80211_MESHCONF_ELEMENT_TTL,
4761                                   nla_get_u8);
4762         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, 0, 1,
4763                                   mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
4764                                   nla_get_u8);
4765         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor,
4766                                   1, 255, mask,
4767                                   NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
4768                                   nla_get_u32);
4769         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, 0, 255,
4770                                   mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
4771                                   nla_get_u8);
4772         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, 1, 65535,
4773                                   mask, NL80211_MESHCONF_PATH_REFRESH_TIME,
4774                                   nla_get_u32);
4775         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, 1, 65535,
4776                                   mask, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
4777                                   nla_get_u16);
4778         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
4779                                   1, 65535, mask,
4780                                   NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
4781                                   nla_get_u32);
4782         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval,
4783                                   1, 65535, mask,
4784                                   NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
4785                                   nla_get_u16);
4786         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval,
4787                                   1, 65535, mask,
4788                                   NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
4789                                   nla_get_u16);
4790         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
4791                                   dot11MeshHWMPnetDiameterTraversalTime,
4792                                   1, 65535, mask,
4793                                   NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
4794                                   nla_get_u16);
4795         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, 0, 4,
4796                                   mask, NL80211_MESHCONF_HWMP_ROOTMODE,
4797                                   nla_get_u8);
4798         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, 1, 65535,
4799                                   mask, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
4800                                   nla_get_u16);
4801         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
4802                                   dot11MeshGateAnnouncementProtocol, 0, 1,
4803                                   mask, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
4804                                   nla_get_u8);
4805         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding, 0, 1,
4806                                   mask, NL80211_MESHCONF_FORWARDING,
4807                                   nla_get_u8);
4808         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold, 1, 255,
4809                                   mask, NL80211_MESHCONF_RSSI_THRESHOLD,
4810                                   nla_get_u32);
4811         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, ht_opmode, 0, 16,
4812                                   mask, NL80211_MESHCONF_HT_OPMODE,
4813                                   nla_get_u16);
4814         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathToRootTimeout,
4815                                   1, 65535, mask,
4816                                   NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
4817                                   nla_get_u32);
4818         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval, 1, 65535,
4819                                   mask, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
4820                                   nla_get_u16);
4821         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
4822                                   dot11MeshHWMPconfirmationInterval,
4823                                   1, 65535, mask,
4824                                   NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
4825                                   nla_get_u16);
4826         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, power_mode,
4827                                   NL80211_MESH_POWER_ACTIVE,
4828                                   NL80211_MESH_POWER_MAX,
4829                                   mask, NL80211_MESHCONF_POWER_MODE,
4830                                   nla_get_u32);
4831         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration,
4832                                   0, 65535, mask,
4833                                   NL80211_MESHCONF_AWAKE_WINDOW, nla_get_u16);
4834         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, plink_timeout, 1, 0xffffffff,
4835                                   mask, NL80211_MESHCONF_PLINK_TIMEOUT,
4836                                   nla_get_u32);
4837         if (mask_out)
4838                 *mask_out = mask;
4839
4840         return 0;
4841
4842 #undef FILL_IN_MESH_PARAM_IF_SET
4843 }
4844
4845 static int nl80211_parse_mesh_setup(struct genl_info *info,
4846                                      struct mesh_setup *setup)
4847 {
4848         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4849         struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
4850
4851         if (!info->attrs[NL80211_ATTR_MESH_SETUP])
4852                 return -EINVAL;
4853         if (nla_parse_nested(tb, NL80211_MESH_SETUP_ATTR_MAX,
4854                              info->attrs[NL80211_ATTR_MESH_SETUP],
4855                              nl80211_mesh_setup_params_policy))
4856                 return -EINVAL;
4857
4858         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])
4859                 setup->sync_method =
4860                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ?
4861                  IEEE80211_SYNC_METHOD_VENDOR :
4862                  IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET;
4863
4864         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
4865                 setup->path_sel_proto =
4866                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
4867                  IEEE80211_PATH_PROTOCOL_VENDOR :
4868                  IEEE80211_PATH_PROTOCOL_HWMP;
4869
4870         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
4871                 setup->path_metric =
4872                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
4873                  IEEE80211_PATH_METRIC_VENDOR :
4874                  IEEE80211_PATH_METRIC_AIRTIME;
4875
4876
4877         if (tb[NL80211_MESH_SETUP_IE]) {
4878                 struct nlattr *ieattr =
4879                         tb[NL80211_MESH_SETUP_IE];
4880                 if (!is_valid_ie_attr(ieattr))
4881                         return -EINVAL;
4882                 setup->ie = nla_data(ieattr);
4883                 setup->ie_len = nla_len(ieattr);
4884         }
4885         if (tb[NL80211_MESH_SETUP_USERSPACE_MPM] &&
4886             !(rdev->wiphy.features & NL80211_FEATURE_USERSPACE_MPM))
4887                 return -EINVAL;
4888         setup->user_mpm = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_MPM]);
4889         setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
4890         setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
4891         if (setup->is_secure)
4892                 setup->user_mpm = true;
4893
4894         if (tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]) {
4895                 if (!setup->user_mpm)
4896                         return -EINVAL;
4897                 setup->auth_id =
4898                         nla_get_u8(tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]);
4899         }
4900
4901         return 0;
4902 }
4903
4904 static int nl80211_update_mesh_config(struct sk_buff *skb,
4905                                       struct genl_info *info)
4906 {
4907         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4908         struct net_device *dev = info->user_ptr[1];
4909         struct wireless_dev *wdev = dev->ieee80211_ptr;
4910         struct mesh_config cfg;
4911         u32 mask;
4912         int err;
4913
4914         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
4915                 return -EOPNOTSUPP;
4916
4917         if (!rdev->ops->update_mesh_config)
4918                 return -EOPNOTSUPP;
4919
4920         err = nl80211_parse_mesh_config(info, &cfg, &mask);
4921         if (err)
4922                 return err;
4923
4924         wdev_lock(wdev);
4925         if (!wdev->mesh_id_len)
4926                 err = -ENOLINK;
4927
4928         if (!err)
4929                 err = rdev_update_mesh_config(rdev, dev, mask, &cfg);
4930
4931         wdev_unlock(wdev);
4932
4933         return err;
4934 }
4935
4936 static int nl80211_get_reg(struct sk_buff *skb, struct genl_info *info)
4937 {
4938         const struct ieee80211_regdomain *regdom;
4939         struct sk_buff *msg;
4940         void *hdr = NULL;
4941         struct nlattr *nl_reg_rules;
4942         unsigned int i;
4943
4944         if (!cfg80211_regdomain)
4945                 return -EINVAL;
4946
4947         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4948         if (!msg)
4949                 return -ENOBUFS;
4950
4951         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
4952                              NL80211_CMD_GET_REG);
4953         if (!hdr)
4954                 goto put_failure;
4955
4956         if (reg_last_request_cell_base() &&
4957             nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
4958                         NL80211_USER_REG_HINT_CELL_BASE))
4959                 goto nla_put_failure;
4960
4961         rcu_read_lock();
4962         regdom = rcu_dereference(cfg80211_regdomain);
4963
4964         if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, regdom->alpha2) ||
4965             (regdom->dfs_region &&
4966              nla_put_u8(msg, NL80211_ATTR_DFS_REGION, regdom->dfs_region)))
4967                 goto nla_put_failure_rcu;
4968
4969         nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES);
4970         if (!nl_reg_rules)
4971                 goto nla_put_failure_rcu;
4972
4973         for (i = 0; i < regdom->n_reg_rules; i++) {
4974                 struct nlattr *nl_reg_rule;
4975                 const struct ieee80211_reg_rule *reg_rule;
4976                 const struct ieee80211_freq_range *freq_range;
4977                 const struct ieee80211_power_rule *power_rule;
4978
4979                 reg_rule = &regdom->reg_rules[i];
4980                 freq_range = &reg_rule->freq_range;
4981                 power_rule = &reg_rule->power_rule;
4982
4983                 nl_reg_rule = nla_nest_start(msg, i);
4984                 if (!nl_reg_rule)
4985                         goto nla_put_failure_rcu;
4986
4987                 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS,
4988                                 reg_rule->flags) ||
4989                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START,
4990                                 freq_range->start_freq_khz) ||
4991                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END,
4992                                 freq_range->end_freq_khz) ||
4993                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
4994                                 freq_range->max_bandwidth_khz) ||
4995                     nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
4996                                 power_rule->max_antenna_gain) ||
4997                     nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
4998                                 power_rule->max_eirp))
4999                         goto nla_put_failure_rcu;
5000
5001                 nla_nest_end(msg, nl_reg_rule);
5002         }
5003         rcu_read_unlock();
5004
5005         nla_nest_end(msg, nl_reg_rules);
5006
5007         genlmsg_end(msg, hdr);
5008         return genlmsg_reply(msg, info);
5009
5010 nla_put_failure_rcu:
5011         rcu_read_unlock();
5012 nla_put_failure:
5013         genlmsg_cancel(msg, hdr);
5014 put_failure:
5015         nlmsg_free(msg);
5016         return -EMSGSIZE;
5017 }
5018
5019 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
5020 {
5021         struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
5022         struct nlattr *nl_reg_rule;
5023         char *alpha2 = NULL;
5024         int rem_reg_rules = 0, r = 0;
5025         u32 num_rules = 0, rule_idx = 0, size_of_regd;
5026         u8 dfs_region = 0;
5027         struct ieee80211_regdomain *rd = NULL;
5028
5029         if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
5030                 return -EINVAL;
5031
5032         if (!info->attrs[NL80211_ATTR_REG_RULES])
5033                 return -EINVAL;
5034
5035         alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
5036
5037         if (info->attrs[NL80211_ATTR_DFS_REGION])
5038                 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]);
5039
5040         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
5041                             rem_reg_rules) {
5042                 num_rules++;
5043                 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
5044                         return -EINVAL;
5045         }
5046
5047         size_of_regd = sizeof(struct ieee80211_regdomain) +
5048                        num_rules * sizeof(struct ieee80211_reg_rule);
5049
5050         rd = kzalloc(size_of_regd, GFP_KERNEL);
5051         if (!rd)
5052                 return -ENOMEM;
5053
5054         rd->n_reg_rules = num_rules;
5055         rd->alpha2[0] = alpha2[0];
5056         rd->alpha2[1] = alpha2[1];
5057
5058         /*
5059          * Disable DFS master mode if the DFS region was
5060          * not supported or known on this kernel.
5061          */
5062         if (reg_supported_dfs_region(dfs_region))
5063                 rd->dfs_region = dfs_region;
5064
5065         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
5066                             rem_reg_rules) {
5067                 nla_parse(tb, NL80211_REG_RULE_ATTR_MAX,
5068                           nla_data(nl_reg_rule), nla_len(nl_reg_rule),
5069                           reg_rule_policy);
5070                 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
5071                 if (r)
5072                         goto bad_reg;
5073
5074                 rule_idx++;
5075
5076                 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
5077                         r = -EINVAL;
5078                         goto bad_reg;
5079                 }
5080         }
5081
5082         r = set_regdom(rd);
5083         /* set_regdom took ownership */
5084         rd = NULL;
5085
5086  bad_reg:
5087         kfree(rd);
5088         return r;
5089 }
5090
5091 static int validate_scan_freqs(struct nlattr *freqs)
5092 {
5093         struct nlattr *attr1, *attr2;
5094         int n_channels = 0, tmp1, tmp2;
5095
5096         nla_for_each_nested(attr1, freqs, tmp1) {
5097                 n_channels++;
5098                 /*
5099                  * Some hardware has a limited channel list for
5100                  * scanning, and it is pretty much nonsensical
5101                  * to scan for a channel twice, so disallow that
5102                  * and don't require drivers to check that the
5103                  * channel list they get isn't longer than what
5104                  * they can scan, as long as they can scan all
5105                  * the channels they registered at once.
5106                  */
5107                 nla_for_each_nested(attr2, freqs, tmp2)
5108                         if (attr1 != attr2 &&
5109                             nla_get_u32(attr1) == nla_get_u32(attr2))
5110                                 return 0;
5111         }
5112
5113         return n_channels;
5114 }
5115
5116 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
5117 {
5118         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5119         struct wireless_dev *wdev = info->user_ptr[1];
5120         struct cfg80211_scan_request *request;
5121         struct nlattr *attr;
5122         struct wiphy *wiphy;
5123         int err, tmp, n_ssids = 0, n_channels, i;
5124         size_t ie_len;
5125
5126         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
5127                 return -EINVAL;
5128
5129         wiphy = &rdev->wiphy;
5130
5131         if (!rdev->ops->scan)
5132                 return -EOPNOTSUPP;
5133
5134         if (rdev->scan_req) {
5135                 err = -EBUSY;
5136                 goto unlock;
5137         }
5138
5139         if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5140                 n_channels = validate_scan_freqs(
5141                                 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
5142                 if (!n_channels) {
5143                         err = -EINVAL;
5144                         goto unlock;
5145                 }
5146         } else {
5147                 enum ieee80211_band band;
5148                 n_channels = 0;
5149
5150                 for (band = 0; band < IEEE80211_NUM_BANDS; band++)
5151                         if (wiphy->bands[band])
5152                                 n_channels += wiphy->bands[band]->n_channels;
5153         }
5154
5155         if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
5156                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
5157                         n_ssids++;
5158
5159         if (n_ssids > wiphy->max_scan_ssids) {
5160                 err = -EINVAL;
5161                 goto unlock;
5162         }
5163
5164         if (info->attrs[NL80211_ATTR_IE])
5165                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5166         else
5167                 ie_len = 0;
5168
5169         if (ie_len > wiphy->max_scan_ie_len) {
5170                 err = -EINVAL;
5171                 goto unlock;
5172         }
5173
5174         request = kzalloc(sizeof(*request)
5175                         + sizeof(*request->ssids) * n_ssids
5176                         + sizeof(*request->channels) * n_channels
5177                         + ie_len, GFP_KERNEL);
5178         if (!request) {
5179                 err = -ENOMEM;
5180                 goto unlock;
5181         }
5182
5183         if (n_ssids)
5184                 request->ssids = (void *)&request->channels[n_channels];
5185         request->n_ssids = n_ssids;
5186         if (ie_len) {
5187                 if (request->ssids)
5188                         request->ie = (void *)(request->ssids + n_ssids);
5189                 else
5190                         request->ie = (void *)(request->channels + n_channels);
5191         }
5192
5193         i = 0;
5194         if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5195                 /* user specified, bail out if channel not found */
5196                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) {
5197                         struct ieee80211_channel *chan;
5198
5199                         chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
5200
5201                         if (!chan) {
5202                                 err = -EINVAL;
5203                                 goto out_free;
5204                         }
5205
5206                         /* ignore disabled channels */
5207                         if (chan->flags & IEEE80211_CHAN_DISABLED)
5208                                 continue;
5209
5210                         request->channels[i] = chan;
5211                         i++;
5212                 }
5213         } else {
5214                 enum ieee80211_band band;
5215
5216                 /* all channels */
5217                 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
5218                         int j;
5219                         if (!wiphy->bands[band])
5220                                 continue;
5221                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
5222                                 struct ieee80211_channel *chan;
5223
5224                                 chan = &wiphy->bands[band]->channels[j];
5225
5226                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
5227                                         continue;
5228
5229                                 request->channels[i] = chan;
5230                                 i++;
5231                         }
5232                 }
5233         }
5234
5235         if (!i) {
5236                 err = -EINVAL;
5237                 goto out_free;
5238         }
5239
5240         request->n_channels = i;
5241
5242         i = 0;
5243         if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
5244                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
5245                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
5246                                 err = -EINVAL;
5247                                 goto out_free;
5248                         }
5249                         request->ssids[i].ssid_len = nla_len(attr);
5250                         memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
5251                         i++;
5252                 }
5253         }
5254
5255         if (info->attrs[NL80211_ATTR_IE]) {
5256                 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5257                 memcpy((void *)request->ie,
5258                        nla_data(info->attrs[NL80211_ATTR_IE]),
5259                        request->ie_len);
5260         }
5261
5262         for (i = 0; i < IEEE80211_NUM_BANDS; i++)
5263                 if (wiphy->bands[i])
5264                         request->rates[i] =
5265                                 (1 << wiphy->bands[i]->n_bitrates) - 1;
5266
5267         if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
5268                 nla_for_each_nested(attr,
5269                                     info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
5270                                     tmp) {
5271                         enum ieee80211_band band = nla_type(attr);
5272
5273                         if (band < 0 || band >= IEEE80211_NUM_BANDS) {
5274                                 err = -EINVAL;
5275                                 goto out_free;
5276                         }
5277                         err = ieee80211_get_ratemask(wiphy->bands[band],
5278                                                      nla_data(attr),
5279                                                      nla_len(attr),
5280                                                      &request->rates[band]);
5281                         if (err)
5282                                 goto out_free;
5283                 }
5284         }
5285
5286         if (info->attrs[NL80211_ATTR_SCAN_FLAGS]) {
5287                 request->flags = nla_get_u32(
5288                         info->attrs[NL80211_ATTR_SCAN_FLAGS]);
5289                 if (((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
5290                      !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) ||
5291                     ((request->flags & NL80211_SCAN_FLAG_FLUSH) &&
5292                      !(wiphy->features & NL80211_FEATURE_SCAN_FLUSH))) {
5293                         err = -EOPNOTSUPP;
5294                         goto out_free;
5295                 }
5296         }
5297
5298         request->no_cck =
5299                 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
5300
5301         request->wdev = wdev;
5302         request->wiphy = &rdev->wiphy;
5303         request->scan_start = jiffies;
5304
5305         rdev->scan_req = request;
5306         err = rdev_scan(rdev, request);
5307
5308         if (!err) {
5309                 nl80211_send_scan_start(rdev, wdev);
5310                 if (wdev->netdev)
5311                         dev_hold(wdev->netdev);
5312         } else {
5313  out_free:
5314                 rdev->scan_req = NULL;
5315                 kfree(request);
5316         }
5317
5318  unlock:
5319         return err;
5320 }
5321
5322 static int nl80211_start_sched_scan(struct sk_buff *skb,
5323                                     struct genl_info *info)
5324 {
5325         struct cfg80211_sched_scan_request *request;
5326         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5327         struct net_device *dev = info->user_ptr[1];
5328         struct nlattr *attr;
5329         struct wiphy *wiphy;
5330         int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i;
5331         u32 interval;
5332         enum ieee80211_band band;
5333         size_t ie_len;
5334         struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
5335
5336         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
5337             !rdev->ops->sched_scan_start)
5338                 return -EOPNOTSUPP;
5339
5340         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
5341                 return -EINVAL;
5342
5343         if (!info->attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
5344                 return -EINVAL;
5345
5346         interval = nla_get_u32(info->attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
5347         if (interval == 0)
5348                 return -EINVAL;
5349
5350         wiphy = &rdev->wiphy;
5351
5352         if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5353                 n_channels = validate_scan_freqs(
5354                                 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
5355                 if (!n_channels)
5356                         return -EINVAL;
5357         } else {
5358                 n_channels = 0;
5359
5360                 for (band = 0; band < IEEE80211_NUM_BANDS; band++)
5361                         if (wiphy->bands[band])
5362                                 n_channels += wiphy->bands[band]->n_channels;
5363         }
5364
5365         if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
5366                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS],
5367                                     tmp)
5368                         n_ssids++;
5369
5370         if (n_ssids > wiphy->max_sched_scan_ssids)
5371                 return -EINVAL;
5372
5373         if (info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH])
5374                 nla_for_each_nested(attr,
5375                                     info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
5376                                     tmp)
5377                         n_match_sets++;
5378
5379         if (n_match_sets > wiphy->max_match_sets)
5380                 return -EINVAL;
5381
5382         if (info->attrs[NL80211_ATTR_IE])
5383                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5384         else
5385                 ie_len = 0;
5386
5387         if (ie_len > wiphy->max_sched_scan_ie_len)
5388                 return -EINVAL;
5389
5390         if (rdev->sched_scan_req) {
5391                 err = -EINPROGRESS;
5392                 goto out;
5393         }
5394
5395         request = kzalloc(sizeof(*request)
5396                         + sizeof(*request->ssids) * n_ssids
5397                         + sizeof(*request->match_sets) * n_match_sets
5398                         + sizeof(*request->channels) * n_channels
5399                         + ie_len, GFP_KERNEL);
5400         if (!request) {
5401                 err = -ENOMEM;
5402                 goto out;
5403         }
5404
5405         if (n_ssids)
5406                 request->ssids = (void *)&request->channels[n_channels];
5407         request->n_ssids = n_ssids;
5408         if (ie_len) {
5409                 if (request->ssids)
5410                         request->ie = (void *)(request->ssids + n_ssids);
5411                 else
5412                         request->ie = (void *)(request->channels + n_channels);
5413         }
5414
5415         if (n_match_sets) {
5416                 if (request->ie)
5417                         request->match_sets = (void *)(request->ie + ie_len);
5418                 else if (request->ssids)
5419                         request->match_sets =
5420                                 (void *)(request->ssids + n_ssids);
5421                 else
5422                         request->match_sets =
5423                                 (void *)(request->channels + n_channels);
5424         }
5425         request->n_match_sets = n_match_sets;
5426
5427         i = 0;
5428         if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5429                 /* user specified, bail out if channel not found */
5430                 nla_for_each_nested(attr,
5431                                     info->attrs[NL80211_ATTR_SCAN_FREQUENCIES],
5432                                     tmp) {
5433                         struct ieee80211_channel *chan;
5434
5435                         chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
5436
5437                         if (!chan) {
5438                                 err = -EINVAL;
5439                                 goto out_free;
5440                         }
5441
5442                         /* ignore disabled channels */
5443                         if (chan->flags & IEEE80211_CHAN_DISABLED)
5444                                 continue;
5445
5446                         request->channels[i] = chan;
5447                         i++;
5448                 }
5449         } else {
5450                 /* all channels */
5451                 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
5452                         int j;
5453                         if (!wiphy->bands[band])
5454                                 continue;
5455                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
5456                                 struct ieee80211_channel *chan;
5457
5458                                 chan = &wiphy->bands[band]->channels[j];
5459
5460                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
5461                                         continue;
5462
5463                                 request->channels[i] = chan;
5464                                 i++;
5465                         }
5466                 }
5467         }
5468
5469         if (!i) {
5470                 err = -EINVAL;
5471                 goto out_free;
5472         }
5473
5474         request->n_channels = i;
5475
5476         i = 0;
5477         if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
5478                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS],
5479                                     tmp) {
5480                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
5481                                 err = -EINVAL;
5482                                 goto out_free;
5483                         }
5484                         request->ssids[i].ssid_len = nla_len(attr);
5485                         memcpy(request->ssids[i].ssid, nla_data(attr),
5486                                nla_len(attr));
5487                         i++;
5488                 }
5489         }
5490
5491         i = 0;
5492         if (info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
5493                 nla_for_each_nested(attr,
5494                                     info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
5495                                     tmp) {
5496                         struct nlattr *ssid, *rssi;
5497
5498                         nla_parse(tb, NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
5499                                   nla_data(attr), nla_len(attr),
5500                                   nl80211_match_policy);
5501                         ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID];
5502                         if (ssid) {
5503                                 if (nla_len(ssid) > IEEE80211_MAX_SSID_LEN) {
5504                                         err = -EINVAL;
5505                                         goto out_free;
5506                                 }
5507                                 memcpy(request->match_sets[i].ssid.ssid,
5508                                        nla_data(ssid), nla_len(ssid));
5509                                 request->match_sets[i].ssid.ssid_len =
5510                                         nla_len(ssid);
5511                         }
5512                         rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
5513                         if (rssi)
5514                                 request->rssi_thold = nla_get_u32(rssi);
5515                         else
5516                                 request->rssi_thold =
5517                                                    NL80211_SCAN_RSSI_THOLD_OFF;
5518                         i++;
5519                 }
5520         }
5521
5522         if (info->attrs[NL80211_ATTR_IE]) {
5523                 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5524                 memcpy((void *)request->ie,
5525                        nla_data(info->attrs[NL80211_ATTR_IE]),
5526                        request->ie_len);
5527         }
5528
5529         if (info->attrs[NL80211_ATTR_SCAN_FLAGS]) {
5530                 request->flags = nla_get_u32(
5531                         info->attrs[NL80211_ATTR_SCAN_FLAGS]);
5532                 if (((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
5533                      !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) ||
5534                     ((request->flags & NL80211_SCAN_FLAG_FLUSH) &&
5535                      !(wiphy->features & NL80211_FEATURE_SCAN_FLUSH))) {
5536                         err = -EOPNOTSUPP;
5537                         goto out_free;
5538                 }
5539         }
5540
5541         request->dev = dev;
5542         request->wiphy = &rdev->wiphy;
5543         request->interval = interval;
5544         request->scan_start = jiffies;
5545
5546         err = rdev_sched_scan_start(rdev, dev, request);
5547         if (!err) {
5548                 rdev->sched_scan_req = request;
5549                 nl80211_send_sched_scan(rdev, dev,
5550                                         NL80211_CMD_START_SCHED_SCAN);
5551                 goto out;
5552         }
5553
5554 out_free:
5555         kfree(request);
5556 out:
5557         return err;
5558 }
5559
5560 static int nl80211_stop_sched_scan(struct sk_buff *skb,
5561                                    struct genl_info *info)
5562 {
5563         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5564
5565         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
5566             !rdev->ops->sched_scan_stop)
5567                 return -EOPNOTSUPP;
5568
5569         return __cfg80211_stop_sched_scan(rdev, false);
5570 }
5571
5572 static int nl80211_start_radar_detection(struct sk_buff *skb,
5573                                          struct genl_info *info)
5574 {
5575         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5576         struct net_device *dev = info->user_ptr[1];
5577         struct wireless_dev *wdev = dev->ieee80211_ptr;
5578         struct cfg80211_chan_def chandef;
5579         int err;
5580
5581         err = nl80211_parse_chandef(rdev, info, &chandef);
5582         if (err)
5583                 return err;
5584
5585         if (wdev->cac_started)
5586                 return -EBUSY;
5587
5588         err = cfg80211_chandef_dfs_required(wdev->wiphy, &chandef);
5589         if (err < 0)
5590                 return err;
5591
5592         if (err == 0)
5593                 return -EINVAL;
5594
5595         if (chandef.chan->dfs_state != NL80211_DFS_USABLE)
5596                 return -EINVAL;
5597
5598         if (!rdev->ops->start_radar_detection)
5599                 return -EOPNOTSUPP;
5600
5601         err = cfg80211_can_use_iftype_chan(rdev, wdev, wdev->iftype,
5602                                            chandef.chan, CHAN_MODE_SHARED,
5603                                            BIT(chandef.width));
5604         if (err)
5605                 return err;
5606
5607         err = rdev->ops->start_radar_detection(&rdev->wiphy, dev, &chandef);
5608         if (!err) {
5609                 wdev->channel = chandef.chan;
5610                 wdev->cac_started = true;
5611                 wdev->cac_start_time = jiffies;
5612         }
5613         return err;
5614 }
5615
5616 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
5617                             u32 seq, int flags,
5618                             struct cfg80211_registered_device *rdev,
5619                             struct wireless_dev *wdev,
5620                             struct cfg80211_internal_bss *intbss)
5621 {
5622         struct cfg80211_bss *res = &intbss->pub;
5623         const struct cfg80211_bss_ies *ies;
5624         void *hdr;
5625         struct nlattr *bss;
5626         bool tsf = false;
5627
5628         ASSERT_WDEV_LOCK(wdev);
5629
5630         hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
5631                              NL80211_CMD_NEW_SCAN_RESULTS);
5632         if (!hdr)
5633                 return -1;
5634
5635         genl_dump_check_consistent(cb, hdr, &nl80211_fam);
5636
5637         if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation))
5638                 goto nla_put_failure;
5639         if (wdev->netdev &&
5640             nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex))
5641                 goto nla_put_failure;
5642         if (nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
5643                 goto nla_put_failure;
5644
5645         bss = nla_nest_start(msg, NL80211_ATTR_BSS);
5646         if (!bss)
5647                 goto nla_put_failure;
5648         if ((!is_zero_ether_addr(res->bssid) &&
5649              nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid)))
5650                 goto nla_put_failure;
5651
5652         rcu_read_lock();
5653         ies = rcu_dereference(res->ies);
5654         if (ies) {
5655                 if (nla_put_u64(msg, NL80211_BSS_TSF, ies->tsf))
5656                         goto fail_unlock_rcu;
5657                 tsf = true;
5658                 if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS,
5659                                         ies->len, ies->data))
5660                         goto fail_unlock_rcu;
5661         }
5662         ies = rcu_dereference(res->beacon_ies);
5663         if (ies) {
5664                 if (!tsf && nla_put_u64(msg, NL80211_BSS_TSF, ies->tsf))
5665                         goto fail_unlock_rcu;
5666                 if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES,
5667                                         ies->len, ies->data))
5668                         goto fail_unlock_rcu;
5669         }
5670         rcu_read_unlock();
5671
5672         if (res->beacon_interval &&
5673             nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval))
5674                 goto nla_put_failure;
5675         if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) ||
5676             nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) ||
5677             nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO,
5678                         jiffies_to_msecs(jiffies - intbss->ts)))
5679                 goto nla_put_failure;
5680
5681         switch (rdev->wiphy.signal_type) {
5682         case CFG80211_SIGNAL_TYPE_MBM:
5683                 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal))
5684                         goto nla_put_failure;
5685                 break;
5686         case CFG80211_SIGNAL_TYPE_UNSPEC:
5687                 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal))
5688                         goto nla_put_failure;
5689                 break;
5690         default:
5691                 break;
5692         }
5693
5694         switch (wdev->iftype) {
5695         case NL80211_IFTYPE_P2P_CLIENT:
5696         case NL80211_IFTYPE_STATION:
5697                 if (intbss == wdev->current_bss &&
5698                     nla_put_u32(msg, NL80211_BSS_STATUS,
5699                                 NL80211_BSS_STATUS_ASSOCIATED))
5700                         goto nla_put_failure;
5701                 break;
5702         case NL80211_IFTYPE_ADHOC:
5703                 if (intbss == wdev->current_bss &&
5704                     nla_put_u32(msg, NL80211_BSS_STATUS,
5705                                 NL80211_BSS_STATUS_IBSS_JOINED))
5706                         goto nla_put_failure;
5707                 break;
5708         default:
5709                 break;
5710         }
5711
5712         nla_nest_end(msg, bss);
5713
5714         return genlmsg_end(msg, hdr);
5715
5716  fail_unlock_rcu:
5717         rcu_read_unlock();
5718  nla_put_failure:
5719         genlmsg_cancel(msg, hdr);
5720         return -EMSGSIZE;
5721 }
5722
5723 static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb)
5724 {
5725         struct cfg80211_registered_device *rdev;
5726         struct cfg80211_internal_bss *scan;
5727         struct wireless_dev *wdev;
5728         int start = cb->args[2], idx = 0;
5729         int err;
5730
5731         err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
5732         if (err)
5733                 return err;
5734
5735         wdev_lock(wdev);
5736         spin_lock_bh(&rdev->bss_lock);
5737         cfg80211_bss_expire(rdev);
5738
5739         cb->seq = rdev->bss_generation;
5740
5741         list_for_each_entry(scan, &rdev->bss_list, list) {
5742                 if (++idx <= start)
5743                         continue;
5744                 if (nl80211_send_bss(skb, cb,
5745                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
5746                                 rdev, wdev, scan) < 0) {
5747                         idx--;
5748                         break;
5749                 }
5750         }
5751
5752         spin_unlock_bh(&rdev->bss_lock);
5753         wdev_unlock(wdev);
5754
5755         cb->args[2] = idx;
5756         nl80211_finish_wdev_dump(rdev);
5757
5758         return skb->len;
5759 }
5760
5761 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq,
5762                                 int flags, struct net_device *dev,
5763                                 struct survey_info *survey)
5764 {
5765         void *hdr;
5766         struct nlattr *infoattr;
5767
5768         hdr = nl80211hdr_put(msg, portid, seq, flags,
5769                              NL80211_CMD_NEW_SURVEY_RESULTS);
5770         if (!hdr)
5771                 return -ENOMEM;
5772
5773         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
5774                 goto nla_put_failure;
5775
5776         infoattr = nla_nest_start(msg, NL80211_ATTR_SURVEY_INFO);
5777         if (!infoattr)
5778                 goto nla_put_failure;
5779
5780         if (nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY,
5781                         survey->channel->center_freq))
5782                 goto nla_put_failure;
5783
5784         if ((survey->filled & SURVEY_INFO_NOISE_DBM) &&
5785             nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise))
5786                 goto nla_put_failure;
5787         if ((survey->filled & SURVEY_INFO_IN_USE) &&
5788             nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE))
5789                 goto nla_put_failure;
5790         if ((survey->filled & SURVEY_INFO_CHANNEL_TIME) &&
5791             nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME,
5792                         survey->channel_time))
5793                 goto nla_put_failure;
5794         if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_BUSY) &&
5795             nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_BUSY,
5796                         survey->channel_time_busy))
5797                 goto nla_put_failure;
5798         if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_EXT_BUSY) &&
5799             nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_EXT_BUSY,
5800                         survey->channel_time_ext_busy))
5801                 goto nla_put_failure;
5802         if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_RX) &&
5803             nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_RX,
5804                         survey->channel_time_rx))
5805                 goto nla_put_failure;
5806         if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_TX) &&
5807             nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_TX,
5808                         survey->channel_time_tx))
5809                 goto nla_put_failure;
5810
5811         nla_nest_end(msg, infoattr);
5812
5813         return genlmsg_end(msg, hdr);
5814
5815  nla_put_failure:
5816         genlmsg_cancel(msg, hdr);
5817         return -EMSGSIZE;
5818 }
5819
5820 static int nl80211_dump_survey(struct sk_buff *skb,
5821                         struct netlink_callback *cb)
5822 {
5823         struct survey_info survey;
5824         struct cfg80211_registered_device *dev;
5825         struct wireless_dev *wdev;
5826         int survey_idx = cb->args[2];
5827         int res;
5828
5829         res = nl80211_prepare_wdev_dump(skb, cb, &dev, &wdev);
5830         if (res)
5831                 return res;
5832
5833         if (!wdev->netdev) {
5834                 res = -EINVAL;
5835                 goto out_err;
5836         }
5837
5838         if (!dev->ops->dump_survey) {
5839                 res = -EOPNOTSUPP;
5840                 goto out_err;
5841         }
5842
5843         while (1) {
5844                 struct ieee80211_channel *chan;
5845
5846                 res = rdev_dump_survey(dev, wdev->netdev, survey_idx, &survey);
5847                 if (res == -ENOENT)
5848                         break;
5849                 if (res)
5850                         goto out_err;
5851
5852                 /* Survey without a channel doesn't make sense */
5853                 if (!survey.channel) {
5854                         res = -EINVAL;
5855                         goto out;
5856                 }
5857
5858                 chan = ieee80211_get_channel(&dev->wiphy,
5859                                              survey.channel->center_freq);
5860                 if (!chan || chan->flags & IEEE80211_CHAN_DISABLED) {
5861                         survey_idx++;
5862                         continue;
5863                 }
5864
5865                 if (nl80211_send_survey(skb,
5866                                 NETLINK_CB(cb->skb).portid,
5867                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
5868                                 wdev->netdev, &survey) < 0)
5869                         goto out;
5870                 survey_idx++;
5871         }
5872
5873  out:
5874         cb->args[2] = survey_idx;
5875         res = skb->len;
5876  out_err:
5877         nl80211_finish_wdev_dump(dev);
5878         return res;
5879 }
5880
5881 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
5882 {
5883         return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
5884                                   NL80211_WPA_VERSION_2));
5885 }
5886
5887 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
5888 {
5889         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5890         struct net_device *dev = info->user_ptr[1];
5891         struct ieee80211_channel *chan;
5892         const u8 *bssid, *ssid, *ie = NULL, *sae_data = NULL;
5893         int err, ssid_len, ie_len = 0, sae_data_len = 0;
5894         enum nl80211_auth_type auth_type;
5895         struct key_parse key;
5896         bool local_state_change;
5897
5898         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
5899                 return -EINVAL;
5900
5901         if (!info->attrs[NL80211_ATTR_MAC])
5902                 return -EINVAL;
5903
5904         if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
5905                 return -EINVAL;
5906
5907         if (!info->attrs[NL80211_ATTR_SSID])
5908                 return -EINVAL;
5909
5910         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
5911                 return -EINVAL;
5912
5913         err = nl80211_parse_key(info, &key);
5914         if (err)
5915                 return err;
5916
5917         if (key.idx >= 0) {
5918                 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
5919                         return -EINVAL;
5920                 if (!key.p.key || !key.p.key_len)
5921                         return -EINVAL;
5922                 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
5923                      key.p.key_len != WLAN_KEY_LEN_WEP40) &&
5924                     (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
5925                      key.p.key_len != WLAN_KEY_LEN_WEP104))
5926                         return -EINVAL;
5927                 if (key.idx > 4)
5928                         return -EINVAL;
5929         } else {
5930                 key.p.key_len = 0;
5931                 key.p.key = NULL;
5932         }
5933
5934         if (key.idx >= 0) {
5935                 int i;
5936                 bool ok = false;
5937                 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
5938                         if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
5939                                 ok = true;
5940                                 break;
5941                         }
5942                 }
5943                 if (!ok)
5944                         return -EINVAL;
5945         }
5946
5947         if (!rdev->ops->auth)
5948                 return -EOPNOTSUPP;
5949
5950         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
5951             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
5952                 return -EOPNOTSUPP;
5953
5954         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
5955         chan = ieee80211_get_channel(&rdev->wiphy,
5956                 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
5957         if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED))
5958                 return -EINVAL;
5959
5960         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
5961         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
5962
5963         if (info->attrs[NL80211_ATTR_IE]) {
5964                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
5965                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5966         }
5967
5968         auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
5969         if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE))
5970                 return -EINVAL;
5971
5972         if (auth_type == NL80211_AUTHTYPE_SAE &&
5973             !info->attrs[NL80211_ATTR_SAE_DATA])
5974                 return -EINVAL;
5975
5976         if (info->attrs[NL80211_ATTR_SAE_DATA]) {
5977                 if (auth_type != NL80211_AUTHTYPE_SAE)
5978                         return -EINVAL;
5979                 sae_data = nla_data(info->attrs[NL80211_ATTR_SAE_DATA]);
5980                 sae_data_len = nla_len(info->attrs[NL80211_ATTR_SAE_DATA]);
5981                 /* need to include at least Auth Transaction and Status Code */
5982                 if (sae_data_len < 4)
5983                         return -EINVAL;
5984         }
5985
5986         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
5987
5988         /*
5989          * Since we no longer track auth state, ignore
5990          * requests to only change local state.
5991          */
5992         if (local_state_change)
5993                 return 0;
5994
5995         wdev_lock(dev->ieee80211_ptr);
5996         err = cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
5997                                  ssid, ssid_len, ie, ie_len,
5998                                  key.p.key, key.p.key_len, key.idx,
5999                                  sae_data, sae_data_len);
6000         wdev_unlock(dev->ieee80211_ptr);
6001         return err;
6002 }
6003
6004 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
6005                                    struct genl_info *info,
6006                                    struct cfg80211_crypto_settings *settings,
6007                                    int cipher_limit)
6008 {
6009         memset(settings, 0, sizeof(*settings));
6010
6011         settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
6012
6013         if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
6014                 u16 proto;
6015                 proto = nla_get_u16(
6016                         info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
6017                 settings->control_port_ethertype = cpu_to_be16(proto);
6018                 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
6019                     proto != ETH_P_PAE)
6020                         return -EINVAL;
6021                 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
6022                         settings->control_port_no_encrypt = true;
6023         } else
6024                 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
6025
6026         if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
6027                 void *data;
6028                 int len, i;
6029
6030                 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
6031                 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
6032                 settings->n_ciphers_pairwise = len / sizeof(u32);
6033
6034                 if (len % sizeof(u32))
6035                         return -EINVAL;
6036
6037                 if (settings->n_ciphers_pairwise > cipher_limit)
6038                         return -EINVAL;
6039
6040                 memcpy(settings->ciphers_pairwise, data, len);
6041
6042                 for (i = 0; i < settings->n_ciphers_pairwise; i++)
6043                         if (!cfg80211_supported_cipher_suite(
6044                                         &rdev->wiphy,
6045                                         settings->ciphers_pairwise[i]))
6046                                 return -EINVAL;
6047         }
6048
6049         if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
6050                 settings->cipher_group =
6051                         nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
6052                 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
6053                                                      settings->cipher_group))
6054                         return -EINVAL;
6055         }
6056
6057         if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
6058                 settings->wpa_versions =
6059                         nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
6060                 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
6061                         return -EINVAL;
6062         }
6063
6064         if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
6065                 void *data;
6066                 int len;
6067
6068                 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
6069                 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
6070                 settings->n_akm_suites = len / sizeof(u32);
6071
6072                 if (len % sizeof(u32))
6073                         return -EINVAL;
6074
6075                 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES)
6076                         return -EINVAL;
6077
6078                 memcpy(settings->akm_suites, data, len);
6079         }
6080
6081         return 0;
6082 }
6083
6084 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
6085 {
6086         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6087         struct net_device *dev = info->user_ptr[1];
6088         struct ieee80211_channel *chan;
6089         struct cfg80211_assoc_request req = {};
6090         const u8 *bssid, *ssid;
6091         int err, ssid_len = 0;
6092
6093         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6094                 return -EINVAL;
6095
6096         if (!info->attrs[NL80211_ATTR_MAC] ||
6097             !info->attrs[NL80211_ATTR_SSID] ||
6098             !info->attrs[NL80211_ATTR_WIPHY_FREQ])
6099                 return -EINVAL;
6100
6101         if (!rdev->ops->assoc)
6102                 return -EOPNOTSUPP;
6103
6104         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6105             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6106                 return -EOPNOTSUPP;
6107
6108         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6109
6110         chan = ieee80211_get_channel(&rdev->wiphy,
6111                 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
6112         if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED))
6113                 return -EINVAL;
6114
6115         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
6116         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
6117
6118         if (info->attrs[NL80211_ATTR_IE]) {
6119                 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6120                 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6121         }
6122
6123         if (info->attrs[NL80211_ATTR_USE_MFP]) {
6124                 enum nl80211_mfp mfp =
6125                         nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
6126                 if (mfp == NL80211_MFP_REQUIRED)
6127                         req.use_mfp = true;
6128                 else if (mfp != NL80211_MFP_NO)
6129                         return -EINVAL;
6130         }
6131
6132         if (info->attrs[NL80211_ATTR_PREV_BSSID])
6133                 req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
6134
6135         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
6136                 req.flags |= ASSOC_REQ_DISABLE_HT;
6137
6138         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
6139                 memcpy(&req.ht_capa_mask,
6140                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
6141                        sizeof(req.ht_capa_mask));
6142
6143         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
6144                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
6145                         return -EINVAL;
6146                 memcpy(&req.ht_capa,
6147                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
6148                        sizeof(req.ht_capa));
6149         }
6150
6151         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
6152                 req.flags |= ASSOC_REQ_DISABLE_VHT;
6153
6154         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
6155                 memcpy(&req.vht_capa_mask,
6156                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
6157                        sizeof(req.vht_capa_mask));
6158
6159         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
6160                 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
6161                         return -EINVAL;
6162                 memcpy(&req.vht_capa,
6163                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
6164                        sizeof(req.vht_capa));
6165         }
6166
6167         err = nl80211_crypto_settings(rdev, info, &req.crypto, 1);
6168         if (!err) {
6169                 wdev_lock(dev->ieee80211_ptr);
6170                 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid,
6171                                           ssid, ssid_len, &req);
6172                 wdev_unlock(dev->ieee80211_ptr);
6173         }
6174
6175         return err;
6176 }
6177
6178 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
6179 {
6180         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6181         struct net_device *dev = info->user_ptr[1];
6182         const u8 *ie = NULL, *bssid;
6183         int ie_len = 0, err;
6184         u16 reason_code;
6185         bool local_state_change;
6186
6187         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6188                 return -EINVAL;
6189
6190         if (!info->attrs[NL80211_ATTR_MAC])
6191                 return -EINVAL;
6192
6193         if (!info->attrs[NL80211_ATTR_REASON_CODE])
6194                 return -EINVAL;
6195
6196         if (!rdev->ops->deauth)
6197                 return -EOPNOTSUPP;
6198
6199         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6200             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6201                 return -EOPNOTSUPP;
6202
6203         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6204
6205         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
6206         if (reason_code == 0) {
6207                 /* Reason Code 0 is reserved */
6208                 return -EINVAL;
6209         }
6210
6211         if (info->attrs[NL80211_ATTR_IE]) {
6212                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6213                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6214         }
6215
6216         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
6217
6218         wdev_lock(dev->ieee80211_ptr);
6219         err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
6220                                    local_state_change);
6221         wdev_unlock(dev->ieee80211_ptr);
6222         return err;
6223 }
6224
6225 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
6226 {
6227         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6228         struct net_device *dev = info->user_ptr[1];
6229         const u8 *ie = NULL, *bssid;
6230         int ie_len = 0, err;
6231         u16 reason_code;
6232         bool local_state_change;
6233
6234         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6235                 return -EINVAL;
6236
6237         if (!info->attrs[NL80211_ATTR_MAC])
6238                 return -EINVAL;
6239
6240         if (!info->attrs[NL80211_ATTR_REASON_CODE])
6241                 return -EINVAL;
6242
6243         if (!rdev->ops->disassoc)
6244                 return -EOPNOTSUPP;
6245
6246         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6247             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6248                 return -EOPNOTSUPP;
6249
6250         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6251
6252         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
6253         if (reason_code == 0) {
6254                 /* Reason Code 0 is reserved */
6255                 return -EINVAL;
6256         }
6257
6258         if (info->attrs[NL80211_ATTR_IE]) {
6259                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6260                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6261         }
6262
6263         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
6264
6265         wdev_lock(dev->ieee80211_ptr);
6266         err = cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
6267                                      local_state_change);
6268         wdev_unlock(dev->ieee80211_ptr);
6269         return err;
6270 }
6271
6272 static bool
6273 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
6274                          int mcast_rate[IEEE80211_NUM_BANDS],
6275                          int rateval)
6276 {
6277         struct wiphy *wiphy = &rdev->wiphy;
6278         bool found = false;
6279         int band, i;
6280
6281         for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
6282                 struct ieee80211_supported_band *sband;
6283
6284                 sband = wiphy->bands[band];
6285                 if (!sband)
6286                         continue;
6287
6288                 for (i = 0; i < sband->n_bitrates; i++) {
6289                         if (sband->bitrates[i].bitrate == rateval) {
6290                                 mcast_rate[band] = i + 1;
6291                                 found = true;
6292                                 break;
6293                         }
6294                 }
6295         }
6296
6297         return found;
6298 }
6299
6300 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
6301 {
6302         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6303         struct net_device *dev = info->user_ptr[1];
6304         struct cfg80211_ibss_params ibss;
6305         struct wiphy *wiphy;
6306         struct cfg80211_cached_keys *connkeys = NULL;
6307         int err;
6308
6309         memset(&ibss, 0, sizeof(ibss));
6310
6311         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6312                 return -EINVAL;
6313
6314         if (!info->attrs[NL80211_ATTR_SSID] ||
6315             !nla_len(info->attrs[NL80211_ATTR_SSID]))
6316                 return -EINVAL;
6317
6318         ibss.beacon_interval = 100;
6319
6320         if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
6321                 ibss.beacon_interval =
6322                         nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
6323                 if (ibss.beacon_interval < 1 || ibss.beacon_interval > 10000)
6324                         return -EINVAL;
6325         }
6326
6327         if (!rdev->ops->join_ibss)
6328                 return -EOPNOTSUPP;
6329
6330         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
6331                 return -EOPNOTSUPP;
6332
6333         wiphy = &rdev->wiphy;
6334
6335         if (info->attrs[NL80211_ATTR_MAC]) {
6336                 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6337
6338                 if (!is_valid_ether_addr(ibss.bssid))
6339                         return -EINVAL;
6340         }
6341         ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
6342         ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
6343
6344         if (info->attrs[NL80211_ATTR_IE]) {
6345                 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6346                 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6347         }
6348
6349         err = nl80211_parse_chandef(rdev, info, &ibss.chandef);
6350         if (err)
6351                 return err;
6352
6353         if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef))
6354                 return -EINVAL;
6355
6356         switch (ibss.chandef.width) {
6357         case NL80211_CHAN_WIDTH_20_NOHT:
6358                 break;
6359         case NL80211_CHAN_WIDTH_20:
6360         case NL80211_CHAN_WIDTH_40:
6361                 if (rdev->wiphy.features & NL80211_FEATURE_HT_IBSS)
6362                         break;
6363         default:
6364                 return -EINVAL;
6365         }
6366
6367         ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
6368         ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
6369
6370         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
6371                 u8 *rates =
6372                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
6373                 int n_rates =
6374                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
6375                 struct ieee80211_supported_band *sband =
6376                         wiphy->bands[ibss.chandef.chan->band];
6377
6378                 err = ieee80211_get_ratemask(sband, rates, n_rates,
6379                                              &ibss.basic_rates);
6380                 if (err)
6381                         return err;
6382         }
6383
6384         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
6385                 memcpy(&ibss.ht_capa_mask,
6386                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
6387                        sizeof(ibss.ht_capa_mask));
6388
6389         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
6390                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
6391                         return -EINVAL;
6392                 memcpy(&ibss.ht_capa,
6393                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
6394                        sizeof(ibss.ht_capa));
6395         }
6396
6397         if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
6398             !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
6399                         nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
6400                 return -EINVAL;
6401
6402         if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
6403                 bool no_ht = false;
6404
6405                 connkeys = nl80211_parse_connkeys(rdev,
6406                                           info->attrs[NL80211_ATTR_KEYS],
6407                                           &no_ht);
6408                 if (IS_ERR(connkeys))
6409                         return PTR_ERR(connkeys);
6410
6411                 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) &&
6412                     no_ht) {
6413                         kfree(connkeys);
6414                         return -EINVAL;
6415                 }
6416         }
6417
6418         ibss.control_port =
6419                 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]);
6420
6421         err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
6422         if (err)
6423                 kfree(connkeys);
6424         return err;
6425 }
6426
6427 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
6428 {
6429         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6430         struct net_device *dev = info->user_ptr[1];
6431
6432         if (!rdev->ops->leave_ibss)
6433                 return -EOPNOTSUPP;
6434
6435         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
6436                 return -EOPNOTSUPP;
6437
6438         return cfg80211_leave_ibss(rdev, dev, false);
6439 }
6440
6441 static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info)
6442 {
6443         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6444         struct net_device *dev = info->user_ptr[1];
6445         int mcast_rate[IEEE80211_NUM_BANDS];
6446         u32 nla_rate;
6447         int err;
6448
6449         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
6450             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6451                 return -EOPNOTSUPP;
6452
6453         if (!rdev->ops->set_mcast_rate)
6454                 return -EOPNOTSUPP;
6455
6456         memset(mcast_rate, 0, sizeof(mcast_rate));
6457
6458         if (!info->attrs[NL80211_ATTR_MCAST_RATE])
6459                 return -EINVAL;
6460
6461         nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]);
6462         if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate))
6463                 return -EINVAL;
6464
6465         err = rdev->ops->set_mcast_rate(&rdev->wiphy, dev, mcast_rate);
6466
6467         return err;
6468 }
6469
6470
6471 #ifdef CONFIG_NL80211_TESTMODE
6472 static struct genl_multicast_group nl80211_testmode_mcgrp = {
6473         .name = "testmode",
6474 };
6475
6476 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
6477 {
6478         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6479         int err;
6480
6481         if (!info->attrs[NL80211_ATTR_TESTDATA])
6482                 return -EINVAL;
6483
6484         err = -EOPNOTSUPP;
6485         if (rdev->ops->testmode_cmd) {
6486                 rdev->testmode_info = info;
6487                 err = rdev_testmode_cmd(rdev,
6488                                 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
6489                                 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
6490                 rdev->testmode_info = NULL;
6491         }
6492
6493         return err;
6494 }
6495
6496 static int nl80211_testmode_dump(struct sk_buff *skb,
6497                                  struct netlink_callback *cb)
6498 {
6499         struct cfg80211_registered_device *rdev;
6500         int err;
6501         long phy_idx;
6502         void *data = NULL;
6503         int data_len = 0;
6504
6505         rtnl_lock();
6506
6507         if (cb->args[0]) {
6508                 /*
6509                  * 0 is a valid index, but not valid for args[0],
6510                  * so we need to offset by 1.
6511                  */
6512                 phy_idx = cb->args[0] - 1;
6513         } else {
6514                 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
6515                                   nl80211_fam.attrbuf, nl80211_fam.maxattr,
6516                                   nl80211_policy);
6517                 if (err)
6518                         goto out_err;
6519
6520                 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk),
6521                                                   nl80211_fam.attrbuf);
6522                 if (IS_ERR(rdev)) {
6523                         err = PTR_ERR(rdev);
6524                         goto out_err;
6525                 }
6526                 phy_idx = rdev->wiphy_idx;
6527                 rdev = NULL;
6528
6529                 if (nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA])
6530                         cb->args[1] =
6531                                 (long)nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA];
6532         }
6533
6534         if (cb->args[1]) {
6535                 data = nla_data((void *)cb->args[1]);
6536                 data_len = nla_len((void *)cb->args[1]);
6537         }
6538
6539         rdev = cfg80211_rdev_by_wiphy_idx(phy_idx);
6540         if (!rdev) {
6541                 err = -ENOENT;
6542                 goto out_err;
6543         }
6544
6545         if (!rdev->ops->testmode_dump) {
6546                 err = -EOPNOTSUPP;
6547                 goto out_err;
6548         }
6549
6550         while (1) {
6551                 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
6552                                            cb->nlh->nlmsg_seq, NLM_F_MULTI,
6553                                            NL80211_CMD_TESTMODE);
6554                 struct nlattr *tmdata;
6555
6556                 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) {
6557                         genlmsg_cancel(skb, hdr);
6558                         break;
6559                 }
6560
6561                 tmdata = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
6562                 if (!tmdata) {
6563                         genlmsg_cancel(skb, hdr);
6564                         break;
6565                 }
6566                 err = rdev_testmode_dump(rdev, skb, cb, data, data_len);
6567                 nla_nest_end(skb, tmdata);
6568
6569                 if (err == -ENOBUFS || err == -ENOENT) {
6570                         genlmsg_cancel(skb, hdr);
6571                         break;
6572                 } else if (err) {
6573                         genlmsg_cancel(skb, hdr);
6574                         goto out_err;
6575                 }
6576
6577                 genlmsg_end(skb, hdr);
6578         }
6579
6580         err = skb->len;
6581         /* see above */
6582         cb->args[0] = phy_idx + 1;
6583  out_err:
6584         rtnl_unlock();
6585         return err;
6586 }
6587
6588 static struct sk_buff *
6589 __cfg80211_testmode_alloc_skb(struct cfg80211_registered_device *rdev,
6590                               int approxlen, u32 portid, u32 seq, gfp_t gfp)
6591 {
6592         struct sk_buff *skb;
6593         void *hdr;
6594         struct nlattr *data;
6595
6596         skb = nlmsg_new(approxlen + 100, gfp);
6597         if (!skb)
6598                 return NULL;
6599
6600         hdr = nl80211hdr_put(skb, portid, seq, 0, NL80211_CMD_TESTMODE);
6601         if (!hdr) {
6602                 kfree_skb(skb);
6603                 return NULL;
6604         }
6605
6606         if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
6607                 goto nla_put_failure;
6608         data = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
6609
6610         ((void **)skb->cb)[0] = rdev;
6611         ((void **)skb->cb)[1] = hdr;
6612         ((void **)skb->cb)[2] = data;
6613
6614         return skb;
6615
6616  nla_put_failure:
6617         kfree_skb(skb);
6618         return NULL;
6619 }
6620
6621 struct sk_buff *cfg80211_testmode_alloc_reply_skb(struct wiphy *wiphy,
6622                                                   int approxlen)
6623 {
6624         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
6625
6626         if (WARN_ON(!rdev->testmode_info))
6627                 return NULL;
6628
6629         return __cfg80211_testmode_alloc_skb(rdev, approxlen,
6630                                 rdev->testmode_info->snd_portid,
6631                                 rdev->testmode_info->snd_seq,
6632                                 GFP_KERNEL);
6633 }
6634 EXPORT_SYMBOL(cfg80211_testmode_alloc_reply_skb);
6635
6636 int cfg80211_testmode_reply(struct sk_buff *skb)
6637 {
6638         struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
6639         void *hdr = ((void **)skb->cb)[1];
6640         struct nlattr *data = ((void **)skb->cb)[2];
6641
6642         if (WARN_ON(!rdev->testmode_info)) {
6643                 kfree_skb(skb);
6644                 return -EINVAL;
6645         }
6646
6647         nla_nest_end(skb, data);
6648         genlmsg_end(skb, hdr);
6649         return genlmsg_reply(skb, rdev->testmode_info);
6650 }
6651 EXPORT_SYMBOL(cfg80211_testmode_reply);
6652
6653 struct sk_buff *cfg80211_testmode_alloc_event_skb(struct wiphy *wiphy,
6654                                                   int approxlen, gfp_t gfp)
6655 {
6656         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
6657
6658         return __cfg80211_testmode_alloc_skb(rdev, approxlen, 0, 0, gfp);
6659 }
6660 EXPORT_SYMBOL(cfg80211_testmode_alloc_event_skb);
6661
6662 void cfg80211_testmode_event(struct sk_buff *skb, gfp_t gfp)
6663 {
6664         void *hdr = ((void **)skb->cb)[1];
6665         struct nlattr *data = ((void **)skb->cb)[2];
6666
6667         nla_nest_end(skb, data);
6668         genlmsg_end(skb, hdr);
6669         genlmsg_multicast(skb, 0, nl80211_testmode_mcgrp.id, gfp);
6670 }
6671 EXPORT_SYMBOL(cfg80211_testmode_event);
6672 #endif
6673
6674 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
6675 {
6676         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6677         struct net_device *dev = info->user_ptr[1];
6678         struct cfg80211_connect_params connect;
6679         struct wiphy *wiphy;
6680         struct cfg80211_cached_keys *connkeys = NULL;
6681         int err;
6682
6683         memset(&connect, 0, sizeof(connect));
6684
6685         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6686                 return -EINVAL;
6687
6688         if (!info->attrs[NL80211_ATTR_SSID] ||
6689             !nla_len(info->attrs[NL80211_ATTR_SSID]))
6690                 return -EINVAL;
6691
6692         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
6693                 connect.auth_type =
6694                         nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
6695                 if (!nl80211_valid_auth_type(rdev, connect.auth_type,
6696                                              NL80211_CMD_CONNECT))
6697                         return -EINVAL;
6698         } else
6699                 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
6700
6701         connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
6702
6703         err = nl80211_crypto_settings(rdev, info, &connect.crypto,
6704                                       NL80211_MAX_NR_CIPHER_SUITES);
6705         if (err)
6706                 return err;
6707
6708         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6709             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6710                 return -EOPNOTSUPP;
6711
6712         wiphy = &rdev->wiphy;
6713
6714         connect.bg_scan_period = -1;
6715         if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] &&
6716                 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) {
6717                 connect.bg_scan_period =
6718                         nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]);
6719         }
6720
6721         if (info->attrs[NL80211_ATTR_MAC])
6722                 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6723         connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
6724         connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
6725
6726         if (info->attrs[NL80211_ATTR_IE]) {
6727                 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6728                 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6729         }
6730
6731         if (info->attrs[NL80211_ATTR_USE_MFP]) {
6732                 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
6733                 if (connect.mfp != NL80211_MFP_REQUIRED &&
6734                     connect.mfp != NL80211_MFP_NO)
6735                         return -EINVAL;
6736         } else {
6737                 connect.mfp = NL80211_MFP_NO;
6738         }
6739
6740         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
6741                 connect.channel =
6742                         ieee80211_get_channel(wiphy,
6743                             nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
6744                 if (!connect.channel ||
6745                     connect.channel->flags & IEEE80211_CHAN_DISABLED)
6746                         return -EINVAL;
6747         }
6748
6749         if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
6750                 connkeys = nl80211_parse_connkeys(rdev,
6751                                           info->attrs[NL80211_ATTR_KEYS], NULL);
6752                 if (IS_ERR(connkeys))
6753                         return PTR_ERR(connkeys);
6754         }
6755
6756         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
6757                 connect.flags |= ASSOC_REQ_DISABLE_HT;
6758
6759         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
6760                 memcpy(&connect.ht_capa_mask,
6761                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
6762                        sizeof(connect.ht_capa_mask));
6763
6764         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
6765                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) {
6766                         kfree(connkeys);
6767                         return -EINVAL;
6768                 }
6769                 memcpy(&connect.ht_capa,
6770                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
6771                        sizeof(connect.ht_capa));
6772         }
6773
6774         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
6775                 connect.flags |= ASSOC_REQ_DISABLE_VHT;
6776
6777         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
6778                 memcpy(&connect.vht_capa_mask,
6779                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
6780                        sizeof(connect.vht_capa_mask));
6781
6782         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
6783                 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) {
6784                         kfree(connkeys);
6785                         return -EINVAL;
6786                 }
6787                 memcpy(&connect.vht_capa,
6788                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
6789                        sizeof(connect.vht_capa));
6790         }
6791
6792         wdev_lock(dev->ieee80211_ptr);
6793         err = cfg80211_connect(rdev, dev, &connect, connkeys, NULL);
6794         wdev_unlock(dev->ieee80211_ptr);
6795         if (err)
6796                 kfree(connkeys);
6797         return err;
6798 }
6799
6800 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
6801 {
6802         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6803         struct net_device *dev = info->user_ptr[1];
6804         u16 reason;
6805         int ret;
6806
6807         if (!info->attrs[NL80211_ATTR_REASON_CODE])
6808                 reason = WLAN_REASON_DEAUTH_LEAVING;
6809         else
6810                 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
6811
6812         if (reason == 0)
6813                 return -EINVAL;
6814
6815         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6816             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6817                 return -EOPNOTSUPP;
6818
6819         wdev_lock(dev->ieee80211_ptr);
6820         ret = cfg80211_disconnect(rdev, dev, reason, true);
6821         wdev_unlock(dev->ieee80211_ptr);
6822         return ret;
6823 }
6824
6825 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
6826 {
6827         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6828         struct net *net;
6829         int err;
6830         u32 pid;
6831
6832         if (!info->attrs[NL80211_ATTR_PID])
6833                 return -EINVAL;
6834
6835         pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
6836
6837         net = get_net_ns_by_pid(pid);
6838         if (IS_ERR(net))
6839                 return PTR_ERR(net);
6840
6841         err = 0;
6842
6843         /* check if anything to do */
6844         if (!net_eq(wiphy_net(&rdev->wiphy), net))
6845                 err = cfg80211_switch_netns(rdev, net);
6846
6847         put_net(net);
6848         return err;
6849 }
6850
6851 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
6852 {
6853         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6854         int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
6855                         struct cfg80211_pmksa *pmksa) = NULL;
6856         struct net_device *dev = info->user_ptr[1];
6857         struct cfg80211_pmksa pmksa;
6858
6859         memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
6860
6861         if (!info->attrs[NL80211_ATTR_MAC])
6862                 return -EINVAL;
6863
6864         if (!info->attrs[NL80211_ATTR_PMKID])
6865                 return -EINVAL;
6866
6867         pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
6868         pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6869
6870         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6871             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6872                 return -EOPNOTSUPP;
6873
6874         switch (info->genlhdr->cmd) {
6875         case NL80211_CMD_SET_PMKSA:
6876                 rdev_ops = rdev->ops->set_pmksa;
6877                 break;
6878         case NL80211_CMD_DEL_PMKSA:
6879                 rdev_ops = rdev->ops->del_pmksa;
6880                 break;
6881         default:
6882                 WARN_ON(1);
6883                 break;
6884         }
6885
6886         if (!rdev_ops)
6887                 return -EOPNOTSUPP;
6888
6889         return rdev_ops(&rdev->wiphy, dev, &pmksa);
6890 }
6891
6892 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
6893 {
6894         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6895         struct net_device *dev = info->user_ptr[1];
6896
6897         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6898             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6899                 return -EOPNOTSUPP;
6900
6901         if (!rdev->ops->flush_pmksa)
6902                 return -EOPNOTSUPP;
6903
6904         return rdev_flush_pmksa(rdev, dev);
6905 }
6906
6907 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
6908 {
6909         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6910         struct net_device *dev = info->user_ptr[1];
6911         u8 action_code, dialog_token;
6912         u16 status_code;
6913         u8 *peer;
6914
6915         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
6916             !rdev->ops->tdls_mgmt)
6917                 return -EOPNOTSUPP;
6918
6919         if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
6920             !info->attrs[NL80211_ATTR_STATUS_CODE] ||
6921             !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
6922             !info->attrs[NL80211_ATTR_IE] ||
6923             !info->attrs[NL80211_ATTR_MAC])
6924                 return -EINVAL;
6925
6926         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
6927         action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
6928         status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
6929         dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
6930
6931         return rdev_tdls_mgmt(rdev, dev, peer, action_code,
6932                               dialog_token, status_code,
6933                               nla_data(info->attrs[NL80211_ATTR_IE]),
6934                               nla_len(info->attrs[NL80211_ATTR_IE]));
6935 }
6936
6937 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
6938 {
6939         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6940         struct net_device *dev = info->user_ptr[1];
6941         enum nl80211_tdls_operation operation;
6942         u8 *peer;
6943
6944         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
6945             !rdev->ops->tdls_oper)
6946                 return -EOPNOTSUPP;
6947
6948         if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
6949             !info->attrs[NL80211_ATTR_MAC])
6950                 return -EINVAL;
6951
6952         operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
6953         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
6954
6955         return rdev_tdls_oper(rdev, dev, peer, operation);
6956 }
6957
6958 static int nl80211_remain_on_channel(struct sk_buff *skb,
6959                                      struct genl_info *info)
6960 {
6961         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6962         struct wireless_dev *wdev = info->user_ptr[1];
6963         struct cfg80211_chan_def chandef;
6964         struct sk_buff *msg;
6965         void *hdr;
6966         u64 cookie;
6967         u32 duration;
6968         int err;
6969
6970         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
6971             !info->attrs[NL80211_ATTR_DURATION])
6972                 return -EINVAL;
6973
6974         duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
6975
6976         if (!rdev->ops->remain_on_channel ||
6977             !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL))
6978                 return -EOPNOTSUPP;
6979
6980         /*
6981          * We should be on that channel for at least a minimum amount of
6982          * time (10ms) but no longer than the driver supports.
6983          */
6984         if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
6985             duration > rdev->wiphy.max_remain_on_channel_duration)
6986                 return -EINVAL;
6987
6988         err = nl80211_parse_chandef(rdev, info, &chandef);
6989         if (err)
6990                 return err;
6991
6992         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6993         if (!msg)
6994                 return -ENOMEM;
6995
6996         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
6997                              NL80211_CMD_REMAIN_ON_CHANNEL);
6998
6999         if (IS_ERR(hdr)) {
7000                 err = PTR_ERR(hdr);
7001                 goto free_msg;
7002         }
7003
7004         err = rdev_remain_on_channel(rdev, wdev, chandef.chan,
7005                                      duration, &cookie);
7006
7007         if (err)
7008                 goto free_msg;
7009
7010         if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
7011                 goto nla_put_failure;
7012
7013         genlmsg_end(msg, hdr);
7014
7015         return genlmsg_reply(msg, info);
7016
7017  nla_put_failure:
7018         err = -ENOBUFS;
7019  free_msg:
7020         nlmsg_free(msg);
7021         return err;
7022 }
7023
7024 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
7025                                             struct genl_info *info)
7026 {
7027         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7028         struct wireless_dev *wdev = info->user_ptr[1];
7029         u64 cookie;
7030
7031         if (!info->attrs[NL80211_ATTR_COOKIE])
7032                 return -EINVAL;
7033
7034         if (!rdev->ops->cancel_remain_on_channel)
7035                 return -EOPNOTSUPP;
7036
7037         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
7038
7039         return rdev_cancel_remain_on_channel(rdev, wdev, cookie);
7040 }
7041
7042 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
7043                            u8 *rates, u8 rates_len)
7044 {
7045         u8 i;
7046         u32 mask = 0;
7047
7048         for (i = 0; i < rates_len; i++) {
7049                 int rate = (rates[i] & 0x7f) * 5;
7050                 int ridx;
7051                 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
7052                         struct ieee80211_rate *srate =
7053                                 &sband->bitrates[ridx];
7054                         if (rate == srate->bitrate) {
7055                                 mask |= 1 << ridx;
7056                                 break;
7057                         }
7058                 }
7059                 if (ridx == sband->n_bitrates)
7060                         return 0; /* rate not found */
7061         }
7062
7063         return mask;
7064 }
7065
7066 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband,
7067                                u8 *rates, u8 rates_len,
7068                                u8 mcs[IEEE80211_HT_MCS_MASK_LEN])
7069 {
7070         u8 i;
7071
7072         memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN);
7073
7074         for (i = 0; i < rates_len; i++) {
7075                 int ridx, rbit;
7076
7077                 ridx = rates[i] / 8;
7078                 rbit = BIT(rates[i] % 8);
7079
7080                 /* check validity */
7081                 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN))
7082                         return false;
7083
7084                 /* check availability */
7085                 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit)
7086                         mcs[ridx] |= rbit;
7087                 else
7088                         return false;
7089         }
7090
7091         return true;
7092 }
7093
7094 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
7095         [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
7096                                     .len = NL80211_MAX_SUPP_RATES },
7097         [NL80211_TXRATE_MCS] = { .type = NLA_BINARY,
7098                                  .len = NL80211_MAX_SUPP_HT_RATES },
7099 };
7100
7101 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
7102                                        struct genl_info *info)
7103 {
7104         struct nlattr *tb[NL80211_TXRATE_MAX + 1];
7105         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7106         struct cfg80211_bitrate_mask mask;
7107         int rem, i;
7108         struct net_device *dev = info->user_ptr[1];
7109         struct nlattr *tx_rates;
7110         struct ieee80211_supported_band *sband;
7111
7112         if (info->attrs[NL80211_ATTR_TX_RATES] == NULL)
7113                 return -EINVAL;
7114
7115         if (!rdev->ops->set_bitrate_mask)
7116                 return -EOPNOTSUPP;
7117
7118         memset(&mask, 0, sizeof(mask));
7119         /* Default to all rates enabled */
7120         for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
7121                 sband = rdev->wiphy.bands[i];
7122                 mask.control[i].legacy =
7123                         sband ? (1 << sband->n_bitrates) - 1 : 0;
7124                 if (sband)
7125                         memcpy(mask.control[i].mcs,
7126                                sband->ht_cap.mcs.rx_mask,
7127                                sizeof(mask.control[i].mcs));
7128                 else
7129                         memset(mask.control[i].mcs, 0,
7130                                sizeof(mask.control[i].mcs));
7131         }
7132
7133         /*
7134          * The nested attribute uses enum nl80211_band as the index. This maps
7135          * directly to the enum ieee80211_band values used in cfg80211.
7136          */
7137         BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8);
7138         nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem)
7139         {
7140                 enum ieee80211_band band = nla_type(tx_rates);
7141                 if (band < 0 || band >= IEEE80211_NUM_BANDS)
7142                         return -EINVAL;
7143                 sband = rdev->wiphy.bands[band];
7144                 if (sband == NULL)
7145                         return -EINVAL;
7146                 nla_parse(tb, NL80211_TXRATE_MAX, nla_data(tx_rates),
7147                           nla_len(tx_rates), nl80211_txattr_policy);
7148                 if (tb[NL80211_TXRATE_LEGACY]) {
7149                         mask.control[band].legacy = rateset_to_mask(
7150                                 sband,
7151                                 nla_data(tb[NL80211_TXRATE_LEGACY]),
7152                                 nla_len(tb[NL80211_TXRATE_LEGACY]));
7153                         if ((mask.control[band].legacy == 0) &&
7154                             nla_len(tb[NL80211_TXRATE_LEGACY]))
7155                                 return -EINVAL;
7156                 }
7157                 if (tb[NL80211_TXRATE_MCS]) {
7158                         if (!ht_rateset_to_mask(
7159                                         sband,
7160                                         nla_data(tb[NL80211_TXRATE_MCS]),
7161                                         nla_len(tb[NL80211_TXRATE_MCS]),
7162                                         mask.control[band].mcs))
7163                                 return -EINVAL;
7164                 }
7165
7166                 if (mask.control[band].legacy == 0) {
7167                         /* don't allow empty legacy rates if HT
7168                          * is not even supported. */
7169                         if (!rdev->wiphy.bands[band]->ht_cap.ht_supported)
7170                                 return -EINVAL;
7171
7172                         for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
7173                                 if (mask.control[band].mcs[i])
7174                                         break;
7175
7176                         /* legacy and mcs rates may not be both empty */
7177                         if (i == IEEE80211_HT_MCS_MASK_LEN)
7178                                 return -EINVAL;
7179                 }
7180         }
7181
7182         return rdev_set_bitrate_mask(rdev, dev, NULL, &mask);
7183 }
7184
7185 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
7186 {
7187         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7188         struct wireless_dev *wdev = info->user_ptr[1];
7189         u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
7190
7191         if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
7192                 return -EINVAL;
7193
7194         if (info->attrs[NL80211_ATTR_FRAME_TYPE])
7195                 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
7196
7197         switch (wdev->iftype) {
7198         case NL80211_IFTYPE_STATION:
7199         case NL80211_IFTYPE_ADHOC:
7200         case NL80211_IFTYPE_P2P_CLIENT:
7201         case NL80211_IFTYPE_AP:
7202         case NL80211_IFTYPE_AP_VLAN:
7203         case NL80211_IFTYPE_MESH_POINT:
7204         case NL80211_IFTYPE_P2P_GO:
7205         case NL80211_IFTYPE_P2P_DEVICE:
7206                 break;
7207         default:
7208                 return -EOPNOTSUPP;
7209         }
7210
7211         /* not much point in registering if we can't reply */
7212         if (!rdev->ops->mgmt_tx)
7213                 return -EOPNOTSUPP;
7214
7215         return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type,
7216                         nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
7217                         nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]));
7218 }
7219
7220 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
7221 {
7222         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7223         struct wireless_dev *wdev = info->user_ptr[1];
7224         struct cfg80211_chan_def chandef;
7225         int err;
7226         void *hdr = NULL;
7227         u64 cookie;
7228         struct sk_buff *msg = NULL;
7229         unsigned int wait = 0;
7230         bool offchan, no_cck, dont_wait_for_ack;
7231
7232         dont_wait_for_ack = info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK];
7233
7234         if (!info->attrs[NL80211_ATTR_FRAME])
7235                 return -EINVAL;
7236
7237         if (!rdev->ops->mgmt_tx)
7238                 return -EOPNOTSUPP;
7239
7240         switch (wdev->iftype) {
7241         case NL80211_IFTYPE_P2P_DEVICE:
7242                 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
7243                         return -EINVAL;
7244         case NL80211_IFTYPE_STATION:
7245         case NL80211_IFTYPE_ADHOC:
7246         case NL80211_IFTYPE_P2P_CLIENT:
7247         case NL80211_IFTYPE_AP:
7248         case NL80211_IFTYPE_AP_VLAN:
7249         case NL80211_IFTYPE_MESH_POINT:
7250         case NL80211_IFTYPE_P2P_GO:
7251                 break;
7252         default:
7253                 return -EOPNOTSUPP;
7254         }
7255
7256         if (info->attrs[NL80211_ATTR_DURATION]) {
7257                 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
7258                         return -EINVAL;
7259                 wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
7260
7261                 /*
7262                  * We should wait on the channel for at least a minimum amount
7263                  * of time (10ms) but no longer than the driver supports.
7264                  */
7265                 if (wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
7266                     wait > rdev->wiphy.max_remain_on_channel_duration)
7267                         return -EINVAL;
7268
7269         }
7270
7271         offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
7272
7273         if (offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
7274                 return -EINVAL;
7275
7276         no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
7277
7278         /* get the channel if any has been specified, otherwise pass NULL to
7279          * the driver. The latter will use the current one
7280          */
7281         chandef.chan = NULL;
7282         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
7283                 err = nl80211_parse_chandef(rdev, info, &chandef);
7284                 if (err)
7285                         return err;
7286         }
7287
7288         if (!chandef.chan && offchan)
7289                 return -EINVAL;
7290
7291         if (!dont_wait_for_ack) {
7292                 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7293                 if (!msg)
7294                         return -ENOMEM;
7295
7296                 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7297                                      NL80211_CMD_FRAME);
7298
7299                 if (IS_ERR(hdr)) {
7300                         err = PTR_ERR(hdr);
7301                         goto free_msg;
7302                 }
7303         }
7304
7305         err = cfg80211_mlme_mgmt_tx(rdev, wdev, chandef.chan, offchan, wait,
7306                                     nla_data(info->attrs[NL80211_ATTR_FRAME]),
7307                                     nla_len(info->attrs[NL80211_ATTR_FRAME]),
7308                                     no_cck, dont_wait_for_ack, &cookie);
7309         if (err)
7310                 goto free_msg;
7311
7312         if (msg) {
7313                 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
7314                         goto nla_put_failure;
7315
7316                 genlmsg_end(msg, hdr);
7317                 return genlmsg_reply(msg, info);
7318         }
7319
7320         return 0;
7321
7322  nla_put_failure:
7323         err = -ENOBUFS;
7324  free_msg:
7325         nlmsg_free(msg);
7326         return err;
7327 }
7328
7329 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
7330 {
7331         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7332         struct wireless_dev *wdev = info->user_ptr[1];
7333         u64 cookie;
7334
7335         if (!info->attrs[NL80211_ATTR_COOKIE])
7336                 return -EINVAL;
7337
7338         if (!rdev->ops->mgmt_tx_cancel_wait)
7339                 return -EOPNOTSUPP;
7340
7341         switch (wdev->iftype) {
7342         case NL80211_IFTYPE_STATION:
7343         case NL80211_IFTYPE_ADHOC:
7344         case NL80211_IFTYPE_P2P_CLIENT:
7345         case NL80211_IFTYPE_AP:
7346         case NL80211_IFTYPE_AP_VLAN:
7347         case NL80211_IFTYPE_P2P_GO:
7348         case NL80211_IFTYPE_P2P_DEVICE:
7349                 break;
7350         default:
7351                 return -EOPNOTSUPP;
7352         }
7353
7354         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
7355
7356         return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie);
7357 }
7358
7359 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
7360 {
7361         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7362         struct wireless_dev *wdev;
7363         struct net_device *dev = info->user_ptr[1];
7364         u8 ps_state;
7365         bool state;
7366         int err;
7367
7368         if (!info->attrs[NL80211_ATTR_PS_STATE])
7369                 return -EINVAL;
7370
7371         ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
7372
7373         if (ps_state != NL80211_PS_DISABLED && ps_state != NL80211_PS_ENABLED)
7374                 return -EINVAL;
7375
7376         wdev = dev->ieee80211_ptr;
7377
7378         if (!rdev->ops->set_power_mgmt)
7379                 return -EOPNOTSUPP;
7380
7381         state = (ps_state == NL80211_PS_ENABLED) ? true : false;
7382
7383         if (state == wdev->ps)
7384                 return 0;
7385
7386         err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout);
7387         if (!err)
7388                 wdev->ps = state;
7389         return err;
7390 }
7391
7392 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
7393 {
7394         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7395         enum nl80211_ps_state ps_state;
7396         struct wireless_dev *wdev;
7397         struct net_device *dev = info->user_ptr[1];
7398         struct sk_buff *msg;
7399         void *hdr;
7400         int err;
7401
7402         wdev = dev->ieee80211_ptr;
7403
7404         if (!rdev->ops->set_power_mgmt)
7405                 return -EOPNOTSUPP;
7406
7407         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7408         if (!msg)
7409                 return -ENOMEM;
7410
7411         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7412                              NL80211_CMD_GET_POWER_SAVE);
7413         if (!hdr) {
7414                 err = -ENOBUFS;
7415                 goto free_msg;
7416         }
7417
7418         if (wdev->ps)
7419                 ps_state = NL80211_PS_ENABLED;
7420         else
7421                 ps_state = NL80211_PS_DISABLED;
7422
7423         if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state))
7424                 goto nla_put_failure;
7425
7426         genlmsg_end(msg, hdr);
7427         return genlmsg_reply(msg, info);
7428
7429  nla_put_failure:
7430         err = -ENOBUFS;
7431  free_msg:
7432         nlmsg_free(msg);
7433         return err;
7434 }
7435
7436 static struct nla_policy
7437 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] __read_mostly = {
7438         [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 },
7439         [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
7440         [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
7441         [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 },
7442         [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 },
7443         [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 },
7444 };
7445
7446 static int nl80211_set_cqm_txe(struct genl_info *info,
7447                                u32 rate, u32 pkts, u32 intvl)
7448 {
7449         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7450         struct wireless_dev *wdev;
7451         struct net_device *dev = info->user_ptr[1];
7452
7453         if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL)
7454                 return -EINVAL;
7455
7456         wdev = dev->ieee80211_ptr;
7457
7458         if (!rdev->ops->set_cqm_txe_config)
7459                 return -EOPNOTSUPP;
7460
7461         if (wdev->iftype != NL80211_IFTYPE_STATION &&
7462             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
7463                 return -EOPNOTSUPP;
7464
7465         return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl);
7466 }
7467
7468 static int nl80211_set_cqm_rssi(struct genl_info *info,
7469                                 s32 threshold, u32 hysteresis)
7470 {
7471         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7472         struct wireless_dev *wdev;
7473         struct net_device *dev = info->user_ptr[1];
7474
7475         if (threshold > 0)
7476                 return -EINVAL;
7477
7478         wdev = dev->ieee80211_ptr;
7479
7480         if (!rdev->ops->set_cqm_rssi_config)
7481                 return -EOPNOTSUPP;
7482
7483         if (wdev->iftype != NL80211_IFTYPE_STATION &&
7484             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
7485                 return -EOPNOTSUPP;
7486
7487         return rdev_set_cqm_rssi_config(rdev, dev, threshold, hysteresis);
7488 }
7489
7490 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
7491 {
7492         struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
7493         struct nlattr *cqm;
7494         int err;
7495
7496         cqm = info->attrs[NL80211_ATTR_CQM];
7497         if (!cqm) {
7498                 err = -EINVAL;
7499                 goto out;
7500         }
7501
7502         err = nla_parse_nested(attrs, NL80211_ATTR_CQM_MAX, cqm,
7503                                nl80211_attr_cqm_policy);
7504         if (err)
7505                 goto out;
7506
7507         if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
7508             attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
7509                 s32 threshold;
7510                 u32 hysteresis;
7511                 threshold = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
7512                 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
7513                 err = nl80211_set_cqm_rssi(info, threshold, hysteresis);
7514         } else if (attrs[NL80211_ATTR_CQM_TXE_RATE] &&
7515                    attrs[NL80211_ATTR_CQM_TXE_PKTS] &&
7516                    attrs[NL80211_ATTR_CQM_TXE_INTVL]) {
7517                 u32 rate, pkts, intvl;
7518                 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]);
7519                 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]);
7520                 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]);
7521                 err = nl80211_set_cqm_txe(info, rate, pkts, intvl);
7522         } else
7523                 err = -EINVAL;
7524
7525 out:
7526         return err;
7527 }
7528
7529 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
7530 {
7531         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7532         struct net_device *dev = info->user_ptr[1];
7533         struct mesh_config cfg;
7534         struct mesh_setup setup;
7535         int err;
7536
7537         /* start with default */
7538         memcpy(&cfg, &default_mesh_config, sizeof(cfg));
7539         memcpy(&setup, &default_mesh_setup, sizeof(setup));
7540
7541         if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
7542                 /* and parse parameters if given */
7543                 err = nl80211_parse_mesh_config(info, &cfg, NULL);
7544                 if (err)
7545                         return err;
7546         }
7547
7548         if (!info->attrs[NL80211_ATTR_MESH_ID] ||
7549             !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
7550                 return -EINVAL;
7551
7552         setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
7553         setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
7554
7555         if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
7556             !nl80211_parse_mcast_rate(rdev, setup.mcast_rate,
7557                             nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
7558                         return -EINVAL;
7559
7560         if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
7561                 setup.beacon_interval =
7562                         nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
7563                 if (setup.beacon_interval < 10 ||
7564                     setup.beacon_interval > 10000)
7565                         return -EINVAL;
7566         }
7567
7568         if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
7569                 setup.dtim_period =
7570                         nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
7571                 if (setup.dtim_period < 1 || setup.dtim_period > 100)
7572                         return -EINVAL;
7573         }
7574
7575         if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
7576                 /* parse additional setup parameters if given */
7577                 err = nl80211_parse_mesh_setup(info, &setup);
7578                 if (err)
7579                         return err;
7580         }
7581
7582         if (setup.user_mpm)
7583                 cfg.auto_open_plinks = false;
7584
7585         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
7586                 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
7587                 if (err)
7588                         return err;
7589         } else {
7590                 /* cfg80211_join_mesh() will sort it out */
7591                 setup.chandef.chan = NULL;
7592         }
7593
7594         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
7595                 u8 *rates = nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
7596                 int n_rates =
7597                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
7598                 struct ieee80211_supported_band *sband;
7599
7600                 if (!setup.chandef.chan)
7601                         return -EINVAL;
7602
7603                 sband = rdev->wiphy.bands[setup.chandef.chan->band];
7604
7605                 err = ieee80211_get_ratemask(sband, rates, n_rates,
7606                                              &setup.basic_rates);
7607                 if (err)
7608                         return err;
7609         }
7610
7611         return cfg80211_join_mesh(rdev, dev, &setup, &cfg);
7612 }
7613
7614 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
7615 {
7616         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7617         struct net_device *dev = info->user_ptr[1];
7618
7619         return cfg80211_leave_mesh(rdev, dev);
7620 }
7621
7622 #ifdef CONFIG_PM
7623 static int nl80211_send_wowlan_patterns(struct sk_buff *msg,
7624                                         struct cfg80211_registered_device *rdev)
7625 {
7626         struct cfg80211_wowlan *wowlan = rdev->wiphy.wowlan_config;
7627         struct nlattr *nl_pats, *nl_pat;
7628         int i, pat_len;
7629
7630         if (!wowlan->n_patterns)
7631                 return 0;
7632
7633         nl_pats = nla_nest_start(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN);
7634         if (!nl_pats)
7635                 return -ENOBUFS;
7636
7637         for (i = 0; i < wowlan->n_patterns; i++) {
7638                 nl_pat = nla_nest_start(msg, i + 1);
7639                 if (!nl_pat)
7640                         return -ENOBUFS;
7641                 pat_len = wowlan->patterns[i].pattern_len;
7642                 if (nla_put(msg, NL80211_PKTPAT_MASK, DIV_ROUND_UP(pat_len, 8),
7643                             wowlan->patterns[i].mask) ||
7644                     nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
7645                             wowlan->patterns[i].pattern) ||
7646                     nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
7647                                 wowlan->patterns[i].pkt_offset))
7648                         return -ENOBUFS;
7649                 nla_nest_end(msg, nl_pat);
7650         }
7651         nla_nest_end(msg, nl_pats);
7652
7653         return 0;
7654 }
7655
7656 static int nl80211_send_wowlan_tcp(struct sk_buff *msg,
7657                                    struct cfg80211_wowlan_tcp *tcp)
7658 {
7659         struct nlattr *nl_tcp;
7660
7661         if (!tcp)
7662                 return 0;
7663
7664         nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
7665         if (!nl_tcp)
7666                 return -ENOBUFS;
7667
7668         if (nla_put_be32(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) ||
7669             nla_put_be32(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) ||
7670             nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) ||
7671             nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) ||
7672             nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) ||
7673             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
7674                     tcp->payload_len, tcp->payload) ||
7675             nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
7676                         tcp->data_interval) ||
7677             nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
7678                     tcp->wake_len, tcp->wake_data) ||
7679             nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK,
7680                     DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask))
7681                 return -ENOBUFS;
7682
7683         if (tcp->payload_seq.len &&
7684             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ,
7685                     sizeof(tcp->payload_seq), &tcp->payload_seq))
7686                 return -ENOBUFS;
7687
7688         if (tcp->payload_tok.len &&
7689             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
7690                     sizeof(tcp->payload_tok) + tcp->tokens_size,
7691                     &tcp->payload_tok))
7692                 return -ENOBUFS;
7693
7694         nla_nest_end(msg, nl_tcp);
7695
7696         return 0;
7697 }
7698
7699 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
7700 {
7701         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7702         struct sk_buff *msg;
7703         void *hdr;
7704         u32 size = NLMSG_DEFAULT_SIZE;
7705
7706         if (!rdev->wiphy.wowlan)
7707                 return -EOPNOTSUPP;
7708
7709         if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) {
7710                 /* adjust size to have room for all the data */
7711                 size += rdev->wiphy.wowlan_config->tcp->tokens_size +
7712                         rdev->wiphy.wowlan_config->tcp->payload_len +
7713                         rdev->wiphy.wowlan_config->tcp->wake_len +
7714                         rdev->wiphy.wowlan_config->tcp->wake_len / 8;
7715         }
7716
7717         msg = nlmsg_new(size, GFP_KERNEL);
7718         if (!msg)
7719                 return -ENOMEM;
7720
7721         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7722                              NL80211_CMD_GET_WOWLAN);
7723         if (!hdr)
7724                 goto nla_put_failure;
7725
7726         if (rdev->wiphy.wowlan_config) {
7727                 struct nlattr *nl_wowlan;
7728
7729                 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
7730                 if (!nl_wowlan)
7731                         goto nla_put_failure;
7732
7733                 if ((rdev->wiphy.wowlan_config->any &&
7734                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
7735                     (rdev->wiphy.wowlan_config->disconnect &&
7736                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
7737                     (rdev->wiphy.wowlan_config->magic_pkt &&
7738                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
7739                     (rdev->wiphy.wowlan_config->gtk_rekey_failure &&
7740                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
7741                     (rdev->wiphy.wowlan_config->eap_identity_req &&
7742                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
7743                     (rdev->wiphy.wowlan_config->four_way_handshake &&
7744                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
7745                     (rdev->wiphy.wowlan_config->rfkill_release &&
7746                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
7747                         goto nla_put_failure;
7748
7749                 if (nl80211_send_wowlan_patterns(msg, rdev))
7750                         goto nla_put_failure;
7751
7752                 if (nl80211_send_wowlan_tcp(msg,
7753                                             rdev->wiphy.wowlan_config->tcp))
7754                         goto nla_put_failure;
7755
7756                 nla_nest_end(msg, nl_wowlan);
7757         }
7758
7759         genlmsg_end(msg, hdr);
7760         return genlmsg_reply(msg, info);
7761
7762 nla_put_failure:
7763         nlmsg_free(msg);
7764         return -ENOBUFS;
7765 }
7766
7767 static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev,
7768                                     struct nlattr *attr,
7769                                     struct cfg80211_wowlan *trig)
7770 {
7771         struct nlattr *tb[NUM_NL80211_WOWLAN_TCP];
7772         struct cfg80211_wowlan_tcp *cfg;
7773         struct nl80211_wowlan_tcp_data_token *tok = NULL;
7774         struct nl80211_wowlan_tcp_data_seq *seq = NULL;
7775         u32 size;
7776         u32 data_size, wake_size, tokens_size = 0, wake_mask_size;
7777         int err, port;
7778
7779         if (!rdev->wiphy.wowlan->tcp)
7780                 return -EINVAL;
7781
7782         err = nla_parse(tb, MAX_NL80211_WOWLAN_TCP,
7783                         nla_data(attr), nla_len(attr),
7784                         nl80211_wowlan_tcp_policy);
7785         if (err)
7786                 return err;
7787
7788         if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] ||
7789             !tb[NL80211_WOWLAN_TCP_DST_IPV4] ||
7790             !tb[NL80211_WOWLAN_TCP_DST_MAC] ||
7791             !tb[NL80211_WOWLAN_TCP_DST_PORT] ||
7792             !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] ||
7793             !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] ||
7794             !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] ||
7795             !tb[NL80211_WOWLAN_TCP_WAKE_MASK])
7796                 return -EINVAL;
7797
7798         data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]);
7799         if (data_size > rdev->wiphy.wowlan->tcp->data_payload_max)
7800                 return -EINVAL;
7801
7802         if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) >
7803                         rdev->wiphy.wowlan->tcp->data_interval_max ||
7804             nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0)
7805                 return -EINVAL;
7806
7807         wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]);
7808         if (wake_size > rdev->wiphy.wowlan->tcp->wake_payload_max)
7809                 return -EINVAL;
7810
7811         wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]);
7812         if (wake_mask_size != DIV_ROUND_UP(wake_size, 8))
7813                 return -EINVAL;
7814
7815         if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) {
7816                 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
7817
7818                 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
7819                 tokens_size = tokln - sizeof(*tok);
7820
7821                 if (!tok->len || tokens_size % tok->len)
7822                         return -EINVAL;
7823                 if (!rdev->wiphy.wowlan->tcp->tok)
7824                         return -EINVAL;
7825                 if (tok->len > rdev->wiphy.wowlan->tcp->tok->max_len)
7826                         return -EINVAL;
7827                 if (tok->len < rdev->wiphy.wowlan->tcp->tok->min_len)
7828                         return -EINVAL;
7829                 if (tokens_size > rdev->wiphy.wowlan->tcp->tok->bufsize)
7830                         return -EINVAL;
7831                 if (tok->offset + tok->len > data_size)
7832                         return -EINVAL;
7833         }
7834
7835         if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) {
7836                 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]);
7837                 if (!rdev->wiphy.wowlan->tcp->seq)
7838                         return -EINVAL;
7839                 if (seq->len == 0 || seq->len > 4)
7840                         return -EINVAL;
7841                 if (seq->len + seq->offset > data_size)
7842                         return -EINVAL;
7843         }
7844
7845         size = sizeof(*cfg);
7846         size += data_size;
7847         size += wake_size + wake_mask_size;
7848         size += tokens_size;
7849
7850         cfg = kzalloc(size, GFP_KERNEL);
7851         if (!cfg)
7852                 return -ENOMEM;
7853         cfg->src = nla_get_be32(tb[NL80211_WOWLAN_TCP_SRC_IPV4]);
7854         cfg->dst = nla_get_be32(tb[NL80211_WOWLAN_TCP_DST_IPV4]);
7855         memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]),
7856                ETH_ALEN);
7857         if (tb[NL80211_WOWLAN_TCP_SRC_PORT])
7858                 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]);
7859         else
7860                 port = 0;
7861 #ifdef CONFIG_INET
7862         /* allocate a socket and port for it and use it */
7863         err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM,
7864                             IPPROTO_TCP, &cfg->sock, 1);
7865         if (err) {
7866                 kfree(cfg);
7867                 return err;
7868         }
7869         if (inet_csk_get_port(cfg->sock->sk, port)) {
7870                 sock_release(cfg->sock);
7871                 kfree(cfg);
7872                 return -EADDRINUSE;
7873         }
7874         cfg->src_port = inet_sk(cfg->sock->sk)->inet_num;
7875 #else
7876         if (!port) {
7877                 kfree(cfg);
7878                 return -EINVAL;
7879         }
7880         cfg->src_port = port;
7881 #endif
7882
7883         cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]);
7884         cfg->payload_len = data_size;
7885         cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size;
7886         memcpy((void *)cfg->payload,
7887                nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]),
7888                data_size);
7889         if (seq)
7890                 cfg->payload_seq = *seq;
7891         cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]);
7892         cfg->wake_len = wake_size;
7893         cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size;
7894         memcpy((void *)cfg->wake_data,
7895                nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]),
7896                wake_size);
7897         cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size +
7898                          data_size + wake_size;
7899         memcpy((void *)cfg->wake_mask,
7900                nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]),
7901                wake_mask_size);
7902         if (tok) {
7903                 cfg->tokens_size = tokens_size;
7904                 memcpy(&cfg->payload_tok, tok, sizeof(*tok) + tokens_size);
7905         }
7906
7907         trig->tcp = cfg;
7908
7909         return 0;
7910 }
7911
7912 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
7913 {
7914         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7915         struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
7916         struct cfg80211_wowlan new_triggers = {};
7917         struct cfg80211_wowlan *ntrig;
7918         const struct wiphy_wowlan_support *wowlan = rdev->wiphy.wowlan;
7919         int err, i;
7920         bool prev_enabled = rdev->wiphy.wowlan_config;
7921
7922         if (!wowlan)
7923                 return -EOPNOTSUPP;
7924
7925         if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) {
7926                 cfg80211_rdev_free_wowlan(rdev);
7927                 rdev->wiphy.wowlan_config = NULL;
7928                 goto set_wakeup;
7929         }
7930
7931         err = nla_parse(tb, MAX_NL80211_WOWLAN_TRIG,
7932                         nla_data(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
7933                         nla_len(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
7934                         nl80211_wowlan_policy);
7935         if (err)
7936                 return err;
7937
7938         if (tb[NL80211_WOWLAN_TRIG_ANY]) {
7939                 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
7940                         return -EINVAL;
7941                 new_triggers.any = true;
7942         }
7943
7944         if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
7945                 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
7946                         return -EINVAL;
7947                 new_triggers.disconnect = true;
7948         }
7949
7950         if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
7951                 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
7952                         return -EINVAL;
7953                 new_triggers.magic_pkt = true;
7954         }
7955
7956         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
7957                 return -EINVAL;
7958
7959         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
7960                 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
7961                         return -EINVAL;
7962                 new_triggers.gtk_rekey_failure = true;
7963         }
7964
7965         if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
7966                 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
7967                         return -EINVAL;
7968                 new_triggers.eap_identity_req = true;
7969         }
7970
7971         if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
7972                 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
7973                         return -EINVAL;
7974                 new_triggers.four_way_handshake = true;
7975         }
7976
7977         if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
7978                 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
7979                         return -EINVAL;
7980                 new_triggers.rfkill_release = true;
7981         }
7982
7983         if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
7984                 struct nlattr *pat;
7985                 int n_patterns = 0;
7986                 int rem, pat_len, mask_len, pkt_offset;
7987                 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
7988
7989                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
7990                                     rem)
7991                         n_patterns++;
7992                 if (n_patterns > wowlan->n_patterns)
7993                         return -EINVAL;
7994
7995                 new_triggers.patterns = kcalloc(n_patterns,
7996                                                 sizeof(new_triggers.patterns[0]),
7997                                                 GFP_KERNEL);
7998                 if (!new_triggers.patterns)
7999                         return -ENOMEM;
8000
8001                 new_triggers.n_patterns = n_patterns;
8002                 i = 0;
8003
8004                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
8005                                     rem) {
8006                         nla_parse(pat_tb, MAX_NL80211_PKTPAT, nla_data(pat),
8007                                   nla_len(pat), NULL);
8008                         err = -EINVAL;
8009                         if (!pat_tb[NL80211_PKTPAT_MASK] ||
8010                             !pat_tb[NL80211_PKTPAT_PATTERN])
8011                                 goto error;
8012                         pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
8013                         mask_len = DIV_ROUND_UP(pat_len, 8);
8014                         if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
8015                                 goto error;
8016                         if (pat_len > wowlan->pattern_max_len ||
8017                             pat_len < wowlan->pattern_min_len)
8018                                 goto error;
8019
8020                         if (!pat_tb[NL80211_PKTPAT_OFFSET])
8021                                 pkt_offset = 0;
8022                         else
8023                                 pkt_offset = nla_get_u32(
8024                                         pat_tb[NL80211_PKTPAT_OFFSET]);
8025                         if (pkt_offset > wowlan->max_pkt_offset)
8026                                 goto error;
8027                         new_triggers.patterns[i].pkt_offset = pkt_offset;
8028
8029                         new_triggers.patterns[i].mask =
8030                                 kmalloc(mask_len + pat_len, GFP_KERNEL);
8031                         if (!new_triggers.patterns[i].mask) {
8032                                 err = -ENOMEM;
8033                                 goto error;
8034                         }
8035                         new_triggers.patterns[i].pattern =
8036                                 new_triggers.patterns[i].mask + mask_len;
8037                         memcpy(new_triggers.patterns[i].mask,
8038                                nla_data(pat_tb[NL80211_PKTPAT_MASK]),
8039                                mask_len);
8040                         new_triggers.patterns[i].pattern_len = pat_len;
8041                         memcpy(new_triggers.patterns[i].pattern,
8042                                nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
8043                                pat_len);
8044                         i++;
8045                 }
8046         }
8047
8048         if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) {
8049                 err = nl80211_parse_wowlan_tcp(
8050                         rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION],
8051                         &new_triggers);
8052                 if (err)
8053                         goto error;
8054         }
8055
8056         ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL);
8057         if (!ntrig) {
8058                 err = -ENOMEM;
8059                 goto error;
8060         }
8061         cfg80211_rdev_free_wowlan(rdev);
8062         rdev->wiphy.wowlan_config = ntrig;
8063
8064  set_wakeup:
8065         if (rdev->ops->set_wakeup &&
8066             prev_enabled != !!rdev->wiphy.wowlan_config)
8067                 rdev_set_wakeup(rdev, rdev->wiphy.wowlan_config);
8068
8069         return 0;
8070  error:
8071         for (i = 0; i < new_triggers.n_patterns; i++)
8072                 kfree(new_triggers.patterns[i].mask);
8073         kfree(new_triggers.patterns);
8074         if (new_triggers.tcp && new_triggers.tcp->sock)
8075                 sock_release(new_triggers.tcp->sock);
8076         kfree(new_triggers.tcp);
8077         return err;
8078 }
8079 #endif
8080
8081 static int nl80211_send_coalesce_rules(struct sk_buff *msg,
8082                                        struct cfg80211_registered_device *rdev)
8083 {
8084         struct nlattr *nl_pats, *nl_pat, *nl_rule, *nl_rules;
8085         int i, j, pat_len;
8086         struct cfg80211_coalesce_rules *rule;
8087
8088         if (!rdev->coalesce->n_rules)
8089                 return 0;
8090
8091         nl_rules = nla_nest_start(msg, NL80211_ATTR_COALESCE_RULE);
8092         if (!nl_rules)
8093                 return -ENOBUFS;
8094
8095         for (i = 0; i < rdev->coalesce->n_rules; i++) {
8096                 nl_rule = nla_nest_start(msg, i + 1);
8097                 if (!nl_rule)
8098                         return -ENOBUFS;
8099
8100                 rule = &rdev->coalesce->rules[i];
8101                 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_DELAY,
8102                                 rule->delay))
8103                         return -ENOBUFS;
8104
8105                 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_CONDITION,
8106                                 rule->condition))
8107                         return -ENOBUFS;
8108
8109                 nl_pats = nla_nest_start(msg,
8110                                 NL80211_ATTR_COALESCE_RULE_PKT_PATTERN);
8111                 if (!nl_pats)
8112                         return -ENOBUFS;
8113
8114                 for (j = 0; j < rule->n_patterns; j++) {
8115                         nl_pat = nla_nest_start(msg, j + 1);
8116                         if (!nl_pat)
8117                                 return -ENOBUFS;
8118                         pat_len = rule->patterns[j].pattern_len;
8119                         if (nla_put(msg, NL80211_PKTPAT_MASK,
8120                                     DIV_ROUND_UP(pat_len, 8),
8121                                     rule->patterns[j].mask) ||
8122                             nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
8123                                     rule->patterns[j].pattern) ||
8124                             nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
8125                                         rule->patterns[j].pkt_offset))
8126                                 return -ENOBUFS;
8127                         nla_nest_end(msg, nl_pat);
8128                 }
8129                 nla_nest_end(msg, nl_pats);
8130                 nla_nest_end(msg, nl_rule);
8131         }
8132         nla_nest_end(msg, nl_rules);
8133
8134         return 0;
8135 }
8136
8137 static int nl80211_get_coalesce(struct sk_buff *skb, struct genl_info *info)
8138 {
8139         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8140         struct sk_buff *msg;
8141         void *hdr;
8142
8143         if (!rdev->wiphy.coalesce)
8144                 return -EOPNOTSUPP;
8145
8146         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8147         if (!msg)
8148                 return -ENOMEM;
8149
8150         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8151                              NL80211_CMD_GET_COALESCE);
8152         if (!hdr)
8153                 goto nla_put_failure;
8154
8155         if (rdev->coalesce && nl80211_send_coalesce_rules(msg, rdev))
8156                 goto nla_put_failure;
8157
8158         genlmsg_end(msg, hdr);
8159         return genlmsg_reply(msg, info);
8160
8161 nla_put_failure:
8162         nlmsg_free(msg);
8163         return -ENOBUFS;
8164 }
8165
8166 void cfg80211_rdev_free_coalesce(struct cfg80211_registered_device *rdev)
8167 {
8168         struct cfg80211_coalesce *coalesce = rdev->coalesce;
8169         int i, j;
8170         struct cfg80211_coalesce_rules *rule;
8171
8172         if (!coalesce)
8173                 return;
8174
8175         for (i = 0; i < coalesce->n_rules; i++) {
8176                 rule = &coalesce->rules[i];
8177                 for (j = 0; j < rule->n_patterns; j++)
8178                         kfree(rule->patterns[j].mask);
8179                 kfree(rule->patterns);
8180         }
8181         kfree(coalesce->rules);
8182         kfree(coalesce);
8183         rdev->coalesce = NULL;
8184 }
8185
8186 static int nl80211_parse_coalesce_rule(struct cfg80211_registered_device *rdev,
8187                                        struct nlattr *rule,
8188                                        struct cfg80211_coalesce_rules *new_rule)
8189 {
8190         int err, i;
8191         const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
8192         struct nlattr *tb[NUM_NL80211_ATTR_COALESCE_RULE], *pat;
8193         int rem, pat_len, mask_len, pkt_offset, n_patterns = 0;
8194         struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
8195
8196         err = nla_parse(tb, NL80211_ATTR_COALESCE_RULE_MAX, nla_data(rule),
8197                         nla_len(rule), nl80211_coalesce_policy);
8198         if (err)
8199                 return err;
8200
8201         if (tb[NL80211_ATTR_COALESCE_RULE_DELAY])
8202                 new_rule->delay =
8203                         nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_DELAY]);
8204         if (new_rule->delay > coalesce->max_delay)
8205                 return -EINVAL;
8206
8207         if (tb[NL80211_ATTR_COALESCE_RULE_CONDITION])
8208                 new_rule->condition =
8209                         nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_CONDITION]);
8210         if (new_rule->condition != NL80211_COALESCE_CONDITION_MATCH &&
8211             new_rule->condition != NL80211_COALESCE_CONDITION_NO_MATCH)
8212                 return -EINVAL;
8213
8214         if (!tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN])
8215                 return -EINVAL;
8216
8217         nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
8218                             rem)
8219                 n_patterns++;
8220         if (n_patterns > coalesce->n_patterns)
8221                 return -EINVAL;
8222
8223         new_rule->patterns = kcalloc(n_patterns, sizeof(new_rule->patterns[0]),
8224                                      GFP_KERNEL);
8225         if (!new_rule->patterns)
8226                 return -ENOMEM;
8227
8228         new_rule->n_patterns = n_patterns;
8229         i = 0;
8230
8231         nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
8232                             rem) {
8233                 nla_parse(pat_tb, MAX_NL80211_PKTPAT, nla_data(pat),
8234                           nla_len(pat), NULL);
8235                 if (!pat_tb[NL80211_PKTPAT_MASK] ||
8236                     !pat_tb[NL80211_PKTPAT_PATTERN])
8237                         return -EINVAL;
8238                 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
8239                 mask_len = DIV_ROUND_UP(pat_len, 8);
8240                 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
8241                         return -EINVAL;
8242                 if (pat_len > coalesce->pattern_max_len ||
8243                     pat_len < coalesce->pattern_min_len)
8244                         return -EINVAL;
8245
8246                 if (!pat_tb[NL80211_PKTPAT_OFFSET])
8247                         pkt_offset = 0;
8248                 else
8249                         pkt_offset = nla_get_u32(pat_tb[NL80211_PKTPAT_OFFSET]);
8250                 if (pkt_offset > coalesce->max_pkt_offset)
8251                         return -EINVAL;
8252                 new_rule->patterns[i].pkt_offset = pkt_offset;
8253
8254                 new_rule->patterns[i].mask =
8255                         kmalloc(mask_len + pat_len, GFP_KERNEL);
8256                 if (!new_rule->patterns[i].mask)
8257                         return -ENOMEM;
8258                 new_rule->patterns[i].pattern =
8259                         new_rule->patterns[i].mask + mask_len;
8260                 memcpy(new_rule->patterns[i].mask,
8261                        nla_data(pat_tb[NL80211_PKTPAT_MASK]), mask_len);
8262                 new_rule->patterns[i].pattern_len = pat_len;
8263                 memcpy(new_rule->patterns[i].pattern,
8264                        nla_data(pat_tb[NL80211_PKTPAT_PATTERN]), pat_len);
8265                 i++;
8266         }
8267
8268         return 0;
8269 }
8270
8271 static int nl80211_set_coalesce(struct sk_buff *skb, struct genl_info *info)
8272 {
8273         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8274         const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
8275         struct cfg80211_coalesce new_coalesce = {};
8276         struct cfg80211_coalesce *n_coalesce;
8277         int err, rem_rule, n_rules = 0, i, j;
8278         struct nlattr *rule;
8279         struct cfg80211_coalesce_rules *tmp_rule;
8280
8281         if (!rdev->wiphy.coalesce || !rdev->ops->set_coalesce)
8282                 return -EOPNOTSUPP;
8283
8284         if (!info->attrs[NL80211_ATTR_COALESCE_RULE]) {
8285                 cfg80211_rdev_free_coalesce(rdev);
8286                 rdev->ops->set_coalesce(&rdev->wiphy, NULL);
8287                 return 0;
8288         }
8289
8290         nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
8291                             rem_rule)
8292                 n_rules++;
8293         if (n_rules > coalesce->n_rules)
8294                 return -EINVAL;
8295
8296         new_coalesce.rules = kcalloc(n_rules, sizeof(new_coalesce.rules[0]),
8297                                      GFP_KERNEL);
8298         if (!new_coalesce.rules)
8299                 return -ENOMEM;
8300
8301         new_coalesce.n_rules = n_rules;
8302         i = 0;
8303
8304         nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
8305                             rem_rule) {
8306                 err = nl80211_parse_coalesce_rule(rdev, rule,
8307                                                   &new_coalesce.rules[i]);
8308                 if (err)
8309                         goto error;
8310
8311                 i++;
8312         }
8313
8314         err = rdev->ops->set_coalesce(&rdev->wiphy, &new_coalesce);
8315         if (err)
8316                 goto error;
8317
8318         n_coalesce = kmemdup(&new_coalesce, sizeof(new_coalesce), GFP_KERNEL);
8319         if (!n_coalesce) {
8320                 err = -ENOMEM;
8321                 goto error;
8322         }
8323         cfg80211_rdev_free_coalesce(rdev);
8324         rdev->coalesce = n_coalesce;
8325
8326         return 0;
8327 error:
8328         for (i = 0; i < new_coalesce.n_rules; i++) {
8329                 tmp_rule = &new_coalesce.rules[i];
8330                 for (j = 0; j < tmp_rule->n_patterns; j++)
8331                         kfree(tmp_rule->patterns[j].mask);
8332                 kfree(tmp_rule->patterns);
8333         }
8334         kfree(new_coalesce.rules);
8335
8336         return err;
8337 }
8338
8339 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
8340 {
8341         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8342         struct net_device *dev = info->user_ptr[1];
8343         struct wireless_dev *wdev = dev->ieee80211_ptr;
8344         struct nlattr *tb[NUM_NL80211_REKEY_DATA];
8345         struct cfg80211_gtk_rekey_data rekey_data;
8346         int err;
8347
8348         if (!info->attrs[NL80211_ATTR_REKEY_DATA])
8349                 return -EINVAL;
8350
8351         err = nla_parse(tb, MAX_NL80211_REKEY_DATA,
8352                         nla_data(info->attrs[NL80211_ATTR_REKEY_DATA]),
8353                         nla_len(info->attrs[NL80211_ATTR_REKEY_DATA]),
8354                         nl80211_rekey_policy);
8355         if (err)
8356                 return err;
8357
8358         if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN)
8359                 return -ERANGE;
8360         if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN)
8361                 return -ERANGE;
8362         if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN)
8363                 return -ERANGE;
8364
8365         memcpy(rekey_data.kek, nla_data(tb[NL80211_REKEY_DATA_KEK]),
8366                NL80211_KEK_LEN);
8367         memcpy(rekey_data.kck, nla_data(tb[NL80211_REKEY_DATA_KCK]),
8368                NL80211_KCK_LEN);
8369         memcpy(rekey_data.replay_ctr,
8370                nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]),
8371                NL80211_REPLAY_CTR_LEN);
8372
8373         wdev_lock(wdev);
8374         if (!wdev->current_bss) {
8375                 err = -ENOTCONN;
8376                 goto out;
8377         }
8378
8379         if (!rdev->ops->set_rekey_data) {
8380                 err = -EOPNOTSUPP;
8381                 goto out;
8382         }
8383
8384         err = rdev_set_rekey_data(rdev, dev, &rekey_data);
8385  out:
8386         wdev_unlock(wdev);
8387         return err;
8388 }
8389
8390 static int nl80211_register_unexpected_frame(struct sk_buff *skb,
8391                                              struct genl_info *info)
8392 {
8393         struct net_device *dev = info->user_ptr[1];
8394         struct wireless_dev *wdev = dev->ieee80211_ptr;
8395
8396         if (wdev->iftype != NL80211_IFTYPE_AP &&
8397             wdev->iftype != NL80211_IFTYPE_P2P_GO)
8398                 return -EINVAL;
8399
8400         if (wdev->ap_unexpected_nlportid)
8401                 return -EBUSY;
8402
8403         wdev->ap_unexpected_nlportid = info->snd_portid;
8404         return 0;
8405 }
8406
8407 static int nl80211_probe_client(struct sk_buff *skb,
8408                                 struct genl_info *info)
8409 {
8410         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8411         struct net_device *dev = info->user_ptr[1];
8412         struct wireless_dev *wdev = dev->ieee80211_ptr;
8413         struct sk_buff *msg;
8414         void *hdr;
8415         const u8 *addr;
8416         u64 cookie;
8417         int err;
8418
8419         if (wdev->iftype != NL80211_IFTYPE_AP &&
8420             wdev->iftype != NL80211_IFTYPE_P2P_GO)
8421                 return -EOPNOTSUPP;
8422
8423         if (!info->attrs[NL80211_ATTR_MAC])
8424                 return -EINVAL;
8425
8426         if (!rdev->ops->probe_client)
8427                 return -EOPNOTSUPP;
8428
8429         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8430         if (!msg)
8431                 return -ENOMEM;
8432
8433         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8434                              NL80211_CMD_PROBE_CLIENT);
8435
8436         if (IS_ERR(hdr)) {
8437                 err = PTR_ERR(hdr);
8438                 goto free_msg;
8439         }
8440
8441         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
8442
8443         err = rdev_probe_client(rdev, dev, addr, &cookie);
8444         if (err)
8445                 goto free_msg;
8446
8447         if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
8448                 goto nla_put_failure;
8449
8450         genlmsg_end(msg, hdr);
8451
8452         return genlmsg_reply(msg, info);
8453
8454  nla_put_failure:
8455         err = -ENOBUFS;
8456  free_msg:
8457         nlmsg_free(msg);
8458         return err;
8459 }
8460
8461 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
8462 {
8463         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8464         struct cfg80211_beacon_registration *reg, *nreg;
8465         int rv;
8466
8467         if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS))
8468                 return -EOPNOTSUPP;
8469
8470         nreg = kzalloc(sizeof(*nreg), GFP_KERNEL);
8471         if (!nreg)
8472                 return -ENOMEM;
8473
8474         /* First, check if already registered. */
8475         spin_lock_bh(&rdev->beacon_registrations_lock);
8476         list_for_each_entry(reg, &rdev->beacon_registrations, list) {
8477                 if (reg->nlportid == info->snd_portid) {
8478                         rv = -EALREADY;
8479                         goto out_err;
8480                 }
8481         }
8482         /* Add it to the list */
8483         nreg->nlportid = info->snd_portid;
8484         list_add(&nreg->list, &rdev->beacon_registrations);
8485
8486         spin_unlock_bh(&rdev->beacon_registrations_lock);
8487
8488         return 0;
8489 out_err:
8490         spin_unlock_bh(&rdev->beacon_registrations_lock);
8491         kfree(nreg);
8492         return rv;
8493 }
8494
8495 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info)
8496 {
8497         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8498         struct wireless_dev *wdev = info->user_ptr[1];
8499         int err;
8500
8501         if (!rdev->ops->start_p2p_device)
8502                 return -EOPNOTSUPP;
8503
8504         if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
8505                 return -EOPNOTSUPP;
8506
8507         if (wdev->p2p_started)
8508                 return 0;
8509
8510         err = cfg80211_can_add_interface(rdev, wdev->iftype);
8511         if (err)
8512                 return err;
8513
8514         err = rdev_start_p2p_device(rdev, wdev);
8515         if (err)
8516                 return err;
8517
8518         wdev->p2p_started = true;
8519         rdev->opencount++;
8520
8521         return 0;
8522 }
8523
8524 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info)
8525 {
8526         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8527         struct wireless_dev *wdev = info->user_ptr[1];
8528
8529         if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
8530                 return -EOPNOTSUPP;
8531
8532         if (!rdev->ops->stop_p2p_device)
8533                 return -EOPNOTSUPP;
8534
8535         cfg80211_stop_p2p_device(rdev, wdev);
8536
8537         return 0;
8538 }
8539
8540 static int nl80211_get_protocol_features(struct sk_buff *skb,
8541                                          struct genl_info *info)
8542 {
8543         void *hdr;
8544         struct sk_buff *msg;
8545
8546         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8547         if (!msg)
8548                 return -ENOMEM;
8549
8550         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8551                              NL80211_CMD_GET_PROTOCOL_FEATURES);
8552         if (!hdr)
8553                 goto nla_put_failure;
8554
8555         if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES,
8556                         NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP))
8557                 goto nla_put_failure;
8558
8559         genlmsg_end(msg, hdr);
8560         return genlmsg_reply(msg, info);
8561
8562  nla_put_failure:
8563         kfree_skb(msg);
8564         return -ENOBUFS;
8565 }
8566
8567 static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info)
8568 {
8569         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8570         struct cfg80211_update_ft_ies_params ft_params;
8571         struct net_device *dev = info->user_ptr[1];
8572
8573         if (!rdev->ops->update_ft_ies)
8574                 return -EOPNOTSUPP;
8575
8576         if (!info->attrs[NL80211_ATTR_MDID] ||
8577             !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8578                 return -EINVAL;
8579
8580         memset(&ft_params, 0, sizeof(ft_params));
8581         ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]);
8582         ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8583         ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8584
8585         return rdev_update_ft_ies(rdev, dev, &ft_params);
8586 }
8587
8588 static int nl80211_crit_protocol_start(struct sk_buff *skb,
8589                                        struct genl_info *info)
8590 {
8591         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8592         struct wireless_dev *wdev = info->user_ptr[1];
8593         enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC;
8594         u16 duration;
8595         int ret;
8596
8597         if (!rdev->ops->crit_proto_start)
8598                 return -EOPNOTSUPP;
8599
8600         if (WARN_ON(!rdev->ops->crit_proto_stop))
8601                 return -EINVAL;
8602
8603         if (rdev->crit_proto_nlportid)
8604                 return -EBUSY;
8605
8606         /* determine protocol if provided */
8607         if (info->attrs[NL80211_ATTR_CRIT_PROT_ID])
8608                 proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]);
8609
8610         if (proto >= NUM_NL80211_CRIT_PROTO)
8611                 return -EINVAL;
8612
8613         /* timeout must be provided */
8614         if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION])
8615                 return -EINVAL;
8616
8617         duration =
8618                 nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]);
8619
8620         if (duration > NL80211_CRIT_PROTO_MAX_DURATION)
8621                 return -ERANGE;
8622
8623         ret = rdev_crit_proto_start(rdev, wdev, proto, duration);
8624         if (!ret)
8625                 rdev->crit_proto_nlportid = info->snd_portid;
8626
8627         return ret;
8628 }
8629
8630 static int nl80211_crit_protocol_stop(struct sk_buff *skb,
8631                                       struct genl_info *info)
8632 {
8633         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8634         struct wireless_dev *wdev = info->user_ptr[1];
8635
8636         if (!rdev->ops->crit_proto_stop)
8637                 return -EOPNOTSUPP;
8638
8639         if (rdev->crit_proto_nlportid) {
8640                 rdev->crit_proto_nlportid = 0;
8641                 rdev_crit_proto_stop(rdev, wdev);
8642         }
8643         return 0;
8644 }
8645
8646 #define NL80211_FLAG_NEED_WIPHY         0x01
8647 #define NL80211_FLAG_NEED_NETDEV        0x02
8648 #define NL80211_FLAG_NEED_RTNL          0x04
8649 #define NL80211_FLAG_CHECK_NETDEV_UP    0x08
8650 #define NL80211_FLAG_NEED_NETDEV_UP     (NL80211_FLAG_NEED_NETDEV |\
8651                                          NL80211_FLAG_CHECK_NETDEV_UP)
8652 #define NL80211_FLAG_NEED_WDEV          0x10
8653 /* If a netdev is associated, it must be UP, P2P must be started */
8654 #define NL80211_FLAG_NEED_WDEV_UP       (NL80211_FLAG_NEED_WDEV |\
8655                                          NL80211_FLAG_CHECK_NETDEV_UP)
8656
8657 static int nl80211_pre_doit(struct genl_ops *ops, struct sk_buff *skb,
8658                             struct genl_info *info)
8659 {
8660         struct cfg80211_registered_device *rdev;
8661         struct wireless_dev *wdev;
8662         struct net_device *dev;
8663         bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
8664
8665         if (rtnl)
8666                 rtnl_lock();
8667
8668         if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
8669                 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
8670                 if (IS_ERR(rdev)) {
8671                         if (rtnl)
8672                                 rtnl_unlock();
8673                         return PTR_ERR(rdev);
8674                 }
8675                 info->user_ptr[0] = rdev;
8676         } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV ||
8677                    ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
8678                 ASSERT_RTNL();
8679
8680                 wdev = __cfg80211_wdev_from_attrs(genl_info_net(info),
8681                                                   info->attrs);
8682                 if (IS_ERR(wdev)) {
8683                         if (rtnl)
8684                                 rtnl_unlock();
8685                         return PTR_ERR(wdev);
8686                 }
8687
8688                 dev = wdev->netdev;
8689                 rdev = wiphy_to_dev(wdev->wiphy);
8690
8691                 if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
8692                         if (!dev) {
8693                                 if (rtnl)
8694                                         rtnl_unlock();
8695                                 return -EINVAL;
8696                         }
8697
8698                         info->user_ptr[1] = dev;
8699                 } else {
8700                         info->user_ptr[1] = wdev;
8701                 }
8702
8703                 if (dev) {
8704                         if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
8705                             !netif_running(dev)) {
8706                                 if (rtnl)
8707                                         rtnl_unlock();
8708                                 return -ENETDOWN;
8709                         }
8710
8711                         dev_hold(dev);
8712                 } else if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP) {
8713                         if (!wdev->p2p_started) {
8714                                 if (rtnl)
8715                                         rtnl_unlock();
8716                                 return -ENETDOWN;
8717                         }
8718                 }
8719
8720                 info->user_ptr[0] = rdev;
8721         }
8722
8723         return 0;
8724 }
8725
8726 static void nl80211_post_doit(struct genl_ops *ops, struct sk_buff *skb,
8727                               struct genl_info *info)
8728 {
8729         if (info->user_ptr[1]) {
8730                 if (ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
8731                         struct wireless_dev *wdev = info->user_ptr[1];
8732
8733                         if (wdev->netdev)
8734                                 dev_put(wdev->netdev);
8735                 } else {
8736                         dev_put(info->user_ptr[1]);
8737                 }
8738         }
8739         if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
8740                 rtnl_unlock();
8741 }
8742
8743 static struct genl_ops nl80211_ops[] = {
8744         {
8745                 .cmd = NL80211_CMD_GET_WIPHY,
8746                 .doit = nl80211_get_wiphy,
8747                 .dumpit = nl80211_dump_wiphy,
8748                 .done = nl80211_dump_wiphy_done,
8749                 .policy = nl80211_policy,
8750                 /* can be retrieved by unprivileged users */
8751                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
8752                                   NL80211_FLAG_NEED_RTNL,
8753         },
8754         {
8755                 .cmd = NL80211_CMD_SET_WIPHY,
8756                 .doit = nl80211_set_wiphy,
8757                 .policy = nl80211_policy,
8758                 .flags = GENL_ADMIN_PERM,
8759                 .internal_flags = NL80211_FLAG_NEED_RTNL,
8760         },
8761         {
8762                 .cmd = NL80211_CMD_GET_INTERFACE,
8763                 .doit = nl80211_get_interface,
8764                 .dumpit = nl80211_dump_interface,
8765                 .policy = nl80211_policy,
8766                 /* can be retrieved by unprivileged users */
8767                 .internal_flags = NL80211_FLAG_NEED_WDEV |
8768                                   NL80211_FLAG_NEED_RTNL,
8769         },
8770         {
8771                 .cmd = NL80211_CMD_SET_INTERFACE,
8772                 .doit = nl80211_set_interface,
8773                 .policy = nl80211_policy,
8774                 .flags = GENL_ADMIN_PERM,
8775                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
8776                                   NL80211_FLAG_NEED_RTNL,
8777         },
8778         {
8779                 .cmd = NL80211_CMD_NEW_INTERFACE,
8780                 .doit = nl80211_new_interface,
8781                 .policy = nl80211_policy,
8782                 .flags = GENL_ADMIN_PERM,
8783                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
8784                                   NL80211_FLAG_NEED_RTNL,
8785         },
8786         {
8787                 .cmd = NL80211_CMD_DEL_INTERFACE,
8788                 .doit = nl80211_del_interface,
8789                 .policy = nl80211_policy,
8790                 .flags = GENL_ADMIN_PERM,
8791                 .internal_flags = NL80211_FLAG_NEED_WDEV |
8792                                   NL80211_FLAG_NEED_RTNL,
8793         },
8794         {
8795                 .cmd = NL80211_CMD_GET_KEY,
8796                 .doit = nl80211_get_key,
8797                 .policy = nl80211_policy,
8798                 .flags = GENL_ADMIN_PERM,
8799                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8800                                   NL80211_FLAG_NEED_RTNL,
8801         },
8802         {
8803                 .cmd = NL80211_CMD_SET_KEY,
8804                 .doit = nl80211_set_key,
8805                 .policy = nl80211_policy,
8806                 .flags = GENL_ADMIN_PERM,
8807                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8808                                   NL80211_FLAG_NEED_RTNL,
8809         },
8810         {
8811                 .cmd = NL80211_CMD_NEW_KEY,
8812                 .doit = nl80211_new_key,
8813                 .policy = nl80211_policy,
8814                 .flags = GENL_ADMIN_PERM,
8815                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8816                                   NL80211_FLAG_NEED_RTNL,
8817         },
8818         {
8819                 .cmd = NL80211_CMD_DEL_KEY,
8820                 .doit = nl80211_del_key,
8821                 .policy = nl80211_policy,
8822                 .flags = GENL_ADMIN_PERM,
8823                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8824                                   NL80211_FLAG_NEED_RTNL,
8825         },
8826         {
8827                 .cmd = NL80211_CMD_SET_BEACON,
8828                 .policy = nl80211_policy,
8829                 .flags = GENL_ADMIN_PERM,
8830                 .doit = nl80211_set_beacon,
8831                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8832                                   NL80211_FLAG_NEED_RTNL,
8833         },
8834         {
8835                 .cmd = NL80211_CMD_START_AP,
8836                 .policy = nl80211_policy,
8837                 .flags = GENL_ADMIN_PERM,
8838                 .doit = nl80211_start_ap,
8839                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8840                                   NL80211_FLAG_NEED_RTNL,
8841         },
8842         {
8843                 .cmd = NL80211_CMD_STOP_AP,
8844                 .policy = nl80211_policy,
8845                 .flags = GENL_ADMIN_PERM,
8846                 .doit = nl80211_stop_ap,
8847                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8848                                   NL80211_FLAG_NEED_RTNL,
8849         },
8850         {
8851                 .cmd = NL80211_CMD_GET_STATION,
8852                 .doit = nl80211_get_station,
8853                 .dumpit = nl80211_dump_station,
8854                 .policy = nl80211_policy,
8855                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
8856                                   NL80211_FLAG_NEED_RTNL,
8857         },
8858         {
8859                 .cmd = NL80211_CMD_SET_STATION,
8860                 .doit = nl80211_set_station,
8861                 .policy = nl80211_policy,
8862                 .flags = GENL_ADMIN_PERM,
8863                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8864                                   NL80211_FLAG_NEED_RTNL,
8865         },
8866         {
8867                 .cmd = NL80211_CMD_NEW_STATION,
8868                 .doit = nl80211_new_station,
8869                 .policy = nl80211_policy,
8870                 .flags = GENL_ADMIN_PERM,
8871                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8872                                   NL80211_FLAG_NEED_RTNL,
8873         },
8874         {
8875                 .cmd = NL80211_CMD_DEL_STATION,
8876                 .doit = nl80211_del_station,
8877                 .policy = nl80211_policy,
8878                 .flags = GENL_ADMIN_PERM,
8879                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8880                                   NL80211_FLAG_NEED_RTNL,
8881         },
8882         {
8883                 .cmd = NL80211_CMD_GET_MPATH,
8884                 .doit = nl80211_get_mpath,
8885                 .dumpit = nl80211_dump_mpath,
8886                 .policy = nl80211_policy,
8887                 .flags = GENL_ADMIN_PERM,
8888                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8889                                   NL80211_FLAG_NEED_RTNL,
8890         },
8891         {
8892                 .cmd = NL80211_CMD_SET_MPATH,
8893                 .doit = nl80211_set_mpath,
8894                 .policy = nl80211_policy,
8895                 .flags = GENL_ADMIN_PERM,
8896                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8897                                   NL80211_FLAG_NEED_RTNL,
8898         },
8899         {
8900                 .cmd = NL80211_CMD_NEW_MPATH,
8901                 .doit = nl80211_new_mpath,
8902                 .policy = nl80211_policy,
8903                 .flags = GENL_ADMIN_PERM,
8904                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8905                                   NL80211_FLAG_NEED_RTNL,
8906         },
8907         {
8908                 .cmd = NL80211_CMD_DEL_MPATH,
8909                 .doit = nl80211_del_mpath,
8910                 .policy = nl80211_policy,
8911                 .flags = GENL_ADMIN_PERM,
8912                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8913                                   NL80211_FLAG_NEED_RTNL,
8914         },
8915         {
8916                 .cmd = NL80211_CMD_SET_BSS,
8917                 .doit = nl80211_set_bss,
8918                 .policy = nl80211_policy,
8919                 .flags = GENL_ADMIN_PERM,
8920                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8921                                   NL80211_FLAG_NEED_RTNL,
8922         },
8923         {
8924                 .cmd = NL80211_CMD_GET_REG,
8925                 .doit = nl80211_get_reg,
8926                 .policy = nl80211_policy,
8927                 .internal_flags = NL80211_FLAG_NEED_RTNL,
8928                 /* can be retrieved by unprivileged users */
8929         },
8930         {
8931                 .cmd = NL80211_CMD_SET_REG,
8932                 .doit = nl80211_set_reg,
8933                 .policy = nl80211_policy,
8934                 .flags = GENL_ADMIN_PERM,
8935                 .internal_flags = NL80211_FLAG_NEED_RTNL,
8936         },
8937         {
8938                 .cmd = NL80211_CMD_REQ_SET_REG,
8939                 .doit = nl80211_req_set_reg,
8940                 .policy = nl80211_policy,
8941                 .flags = GENL_ADMIN_PERM,
8942         },
8943         {
8944                 .cmd = NL80211_CMD_GET_MESH_CONFIG,
8945                 .doit = nl80211_get_mesh_config,
8946                 .policy = nl80211_policy,
8947                 /* can be retrieved by unprivileged users */
8948                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8949                                   NL80211_FLAG_NEED_RTNL,
8950         },
8951         {
8952                 .cmd = NL80211_CMD_SET_MESH_CONFIG,
8953                 .doit = nl80211_update_mesh_config,
8954                 .policy = nl80211_policy,
8955                 .flags = GENL_ADMIN_PERM,
8956                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8957                                   NL80211_FLAG_NEED_RTNL,
8958         },
8959         {
8960                 .cmd = NL80211_CMD_TRIGGER_SCAN,
8961                 .doit = nl80211_trigger_scan,
8962                 .policy = nl80211_policy,
8963                 .flags = GENL_ADMIN_PERM,
8964                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
8965                                   NL80211_FLAG_NEED_RTNL,
8966         },
8967         {
8968                 .cmd = NL80211_CMD_GET_SCAN,
8969                 .policy = nl80211_policy,
8970                 .dumpit = nl80211_dump_scan,
8971         },
8972         {
8973                 .cmd = NL80211_CMD_START_SCHED_SCAN,
8974                 .doit = nl80211_start_sched_scan,
8975                 .policy = nl80211_policy,
8976                 .flags = GENL_ADMIN_PERM,
8977                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8978                                   NL80211_FLAG_NEED_RTNL,
8979         },
8980         {
8981                 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
8982                 .doit = nl80211_stop_sched_scan,
8983                 .policy = nl80211_policy,
8984                 .flags = GENL_ADMIN_PERM,
8985                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8986                                   NL80211_FLAG_NEED_RTNL,
8987         },
8988         {
8989                 .cmd = NL80211_CMD_AUTHENTICATE,
8990                 .doit = nl80211_authenticate,
8991                 .policy = nl80211_policy,
8992                 .flags = GENL_ADMIN_PERM,
8993                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8994                                   NL80211_FLAG_NEED_RTNL,
8995         },
8996         {
8997                 .cmd = NL80211_CMD_ASSOCIATE,
8998                 .doit = nl80211_associate,
8999                 .policy = nl80211_policy,
9000                 .flags = GENL_ADMIN_PERM,
9001                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9002                                   NL80211_FLAG_NEED_RTNL,
9003         },
9004         {
9005                 .cmd = NL80211_CMD_DEAUTHENTICATE,
9006                 .doit = nl80211_deauthenticate,
9007                 .policy = nl80211_policy,
9008                 .flags = GENL_ADMIN_PERM,
9009                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9010                                   NL80211_FLAG_NEED_RTNL,
9011         },
9012         {
9013                 .cmd = NL80211_CMD_DISASSOCIATE,
9014                 .doit = nl80211_disassociate,
9015                 .policy = nl80211_policy,
9016                 .flags = GENL_ADMIN_PERM,
9017                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9018                                   NL80211_FLAG_NEED_RTNL,
9019         },
9020         {
9021                 .cmd = NL80211_CMD_JOIN_IBSS,
9022                 .doit = nl80211_join_ibss,
9023                 .policy = nl80211_policy,
9024                 .flags = GENL_ADMIN_PERM,
9025                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9026                                   NL80211_FLAG_NEED_RTNL,
9027         },
9028         {
9029                 .cmd = NL80211_CMD_LEAVE_IBSS,
9030                 .doit = nl80211_leave_ibss,
9031                 .policy = nl80211_policy,
9032                 .flags = GENL_ADMIN_PERM,
9033                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9034                                   NL80211_FLAG_NEED_RTNL,
9035         },
9036 #ifdef CONFIG_NL80211_TESTMODE
9037         {
9038                 .cmd = NL80211_CMD_TESTMODE,
9039                 .doit = nl80211_testmode_do,
9040                 .dumpit = nl80211_testmode_dump,
9041                 .policy = nl80211_policy,
9042                 .flags = GENL_ADMIN_PERM,
9043                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
9044                                   NL80211_FLAG_NEED_RTNL,
9045         },
9046 #endif
9047         {
9048                 .cmd = NL80211_CMD_CONNECT,
9049                 .doit = nl80211_connect,
9050                 .policy = nl80211_policy,
9051                 .flags = GENL_ADMIN_PERM,
9052                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9053                                   NL80211_FLAG_NEED_RTNL,
9054         },
9055         {
9056                 .cmd = NL80211_CMD_DISCONNECT,
9057                 .doit = nl80211_disconnect,
9058                 .policy = nl80211_policy,
9059                 .flags = GENL_ADMIN_PERM,
9060                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9061                                   NL80211_FLAG_NEED_RTNL,
9062         },
9063         {
9064                 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
9065                 .doit = nl80211_wiphy_netns,
9066                 .policy = nl80211_policy,
9067                 .flags = GENL_ADMIN_PERM,
9068                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
9069                                   NL80211_FLAG_NEED_RTNL,
9070         },
9071         {
9072                 .cmd = NL80211_CMD_GET_SURVEY,
9073                 .policy = nl80211_policy,
9074                 .dumpit = nl80211_dump_survey,
9075         },
9076         {
9077                 .cmd = NL80211_CMD_SET_PMKSA,
9078                 .doit = nl80211_setdel_pmksa,
9079                 .policy = nl80211_policy,
9080                 .flags = GENL_ADMIN_PERM,
9081                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9082                                   NL80211_FLAG_NEED_RTNL,
9083         },
9084         {
9085                 .cmd = NL80211_CMD_DEL_PMKSA,
9086                 .doit = nl80211_setdel_pmksa,
9087                 .policy = nl80211_policy,
9088                 .flags = GENL_ADMIN_PERM,
9089                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9090                                   NL80211_FLAG_NEED_RTNL,
9091         },
9092         {
9093                 .cmd = NL80211_CMD_FLUSH_PMKSA,
9094                 .doit = nl80211_flush_pmksa,
9095                 .policy = nl80211_policy,
9096                 .flags = GENL_ADMIN_PERM,
9097                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9098                                   NL80211_FLAG_NEED_RTNL,
9099         },
9100         {
9101                 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
9102                 .doit = nl80211_remain_on_channel,
9103                 .policy = nl80211_policy,
9104                 .flags = GENL_ADMIN_PERM,
9105                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
9106                                   NL80211_FLAG_NEED_RTNL,
9107         },
9108         {
9109                 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
9110                 .doit = nl80211_cancel_remain_on_channel,
9111                 .policy = nl80211_policy,
9112                 .flags = GENL_ADMIN_PERM,
9113                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
9114                                   NL80211_FLAG_NEED_RTNL,
9115         },
9116         {
9117                 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
9118                 .doit = nl80211_set_tx_bitrate_mask,
9119                 .policy = nl80211_policy,
9120                 .flags = GENL_ADMIN_PERM,
9121                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9122                                   NL80211_FLAG_NEED_RTNL,
9123         },
9124         {
9125                 .cmd = NL80211_CMD_REGISTER_FRAME,
9126                 .doit = nl80211_register_mgmt,
9127                 .policy = nl80211_policy,
9128                 .flags = GENL_ADMIN_PERM,
9129                 .internal_flags = NL80211_FLAG_NEED_WDEV |
9130                                   NL80211_FLAG_NEED_RTNL,
9131         },
9132         {
9133                 .cmd = NL80211_CMD_FRAME,
9134                 .doit = nl80211_tx_mgmt,
9135                 .policy = nl80211_policy,
9136                 .flags = GENL_ADMIN_PERM,
9137                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
9138                                   NL80211_FLAG_NEED_RTNL,
9139         },
9140         {
9141                 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
9142                 .doit = nl80211_tx_mgmt_cancel_wait,
9143                 .policy = nl80211_policy,
9144                 .flags = GENL_ADMIN_PERM,
9145                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
9146                                   NL80211_FLAG_NEED_RTNL,
9147         },
9148         {
9149                 .cmd = NL80211_CMD_SET_POWER_SAVE,
9150                 .doit = nl80211_set_power_save,
9151                 .policy = nl80211_policy,
9152                 .flags = GENL_ADMIN_PERM,
9153                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9154                                   NL80211_FLAG_NEED_RTNL,
9155         },
9156         {
9157                 .cmd = NL80211_CMD_GET_POWER_SAVE,
9158                 .doit = nl80211_get_power_save,
9159                 .policy = nl80211_policy,
9160                 /* can be retrieved by unprivileged users */
9161                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9162                                   NL80211_FLAG_NEED_RTNL,
9163         },
9164         {
9165                 .cmd = NL80211_CMD_SET_CQM,
9166                 .doit = nl80211_set_cqm,
9167                 .policy = nl80211_policy,
9168                 .flags = GENL_ADMIN_PERM,
9169                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9170                                   NL80211_FLAG_NEED_RTNL,
9171         },
9172         {
9173                 .cmd = NL80211_CMD_SET_CHANNEL,
9174                 .doit = nl80211_set_channel,
9175                 .policy = nl80211_policy,
9176                 .flags = GENL_ADMIN_PERM,
9177                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9178                                   NL80211_FLAG_NEED_RTNL,
9179         },
9180         {
9181                 .cmd = NL80211_CMD_SET_WDS_PEER,
9182                 .doit = nl80211_set_wds_peer,
9183                 .policy = nl80211_policy,
9184                 .flags = GENL_ADMIN_PERM,
9185                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9186                                   NL80211_FLAG_NEED_RTNL,
9187         },
9188         {
9189                 .cmd = NL80211_CMD_JOIN_MESH,
9190                 .doit = nl80211_join_mesh,
9191                 .policy = nl80211_policy,
9192                 .flags = GENL_ADMIN_PERM,
9193                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9194                                   NL80211_FLAG_NEED_RTNL,
9195         },
9196         {
9197                 .cmd = NL80211_CMD_LEAVE_MESH,
9198                 .doit = nl80211_leave_mesh,
9199                 .policy = nl80211_policy,
9200                 .flags = GENL_ADMIN_PERM,
9201                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9202                                   NL80211_FLAG_NEED_RTNL,
9203         },
9204 #ifdef CONFIG_PM
9205         {
9206                 .cmd = NL80211_CMD_GET_WOWLAN,
9207                 .doit = nl80211_get_wowlan,
9208                 .policy = nl80211_policy,
9209                 /* can be retrieved by unprivileged users */
9210                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
9211                                   NL80211_FLAG_NEED_RTNL,
9212         },
9213         {
9214                 .cmd = NL80211_CMD_SET_WOWLAN,
9215                 .doit = nl80211_set_wowlan,
9216                 .policy = nl80211_policy,
9217                 .flags = GENL_ADMIN_PERM,
9218                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
9219                                   NL80211_FLAG_NEED_RTNL,
9220         },
9221 #endif
9222         {
9223                 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
9224                 .doit = nl80211_set_rekey_data,
9225                 .policy = nl80211_policy,
9226                 .flags = GENL_ADMIN_PERM,
9227                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9228                                   NL80211_FLAG_NEED_RTNL,
9229         },
9230         {
9231                 .cmd = NL80211_CMD_TDLS_MGMT,
9232                 .doit = nl80211_tdls_mgmt,
9233                 .policy = nl80211_policy,
9234                 .flags = GENL_ADMIN_PERM,
9235                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9236                                   NL80211_FLAG_NEED_RTNL,
9237         },
9238         {
9239                 .cmd = NL80211_CMD_TDLS_OPER,
9240                 .doit = nl80211_tdls_oper,
9241                 .policy = nl80211_policy,
9242                 .flags = GENL_ADMIN_PERM,
9243                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9244                                   NL80211_FLAG_NEED_RTNL,
9245         },
9246         {
9247                 .cmd = NL80211_CMD_UNEXPECTED_FRAME,
9248                 .doit = nl80211_register_unexpected_frame,
9249                 .policy = nl80211_policy,
9250                 .flags = GENL_ADMIN_PERM,
9251                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9252                                   NL80211_FLAG_NEED_RTNL,
9253         },
9254         {
9255                 .cmd = NL80211_CMD_PROBE_CLIENT,
9256                 .doit = nl80211_probe_client,
9257                 .policy = nl80211_policy,
9258                 .flags = GENL_ADMIN_PERM,
9259                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9260                                   NL80211_FLAG_NEED_RTNL,
9261         },
9262         {
9263                 .cmd = NL80211_CMD_REGISTER_BEACONS,
9264                 .doit = nl80211_register_beacons,
9265                 .policy = nl80211_policy,
9266                 .flags = GENL_ADMIN_PERM,
9267                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
9268                                   NL80211_FLAG_NEED_RTNL,
9269         },
9270         {
9271                 .cmd = NL80211_CMD_SET_NOACK_MAP,
9272                 .doit = nl80211_set_noack_map,
9273                 .policy = nl80211_policy,
9274                 .flags = GENL_ADMIN_PERM,
9275                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9276                                   NL80211_FLAG_NEED_RTNL,
9277         },
9278         {
9279                 .cmd = NL80211_CMD_START_P2P_DEVICE,
9280                 .doit = nl80211_start_p2p_device,
9281                 .policy = nl80211_policy,
9282                 .flags = GENL_ADMIN_PERM,
9283                 .internal_flags = NL80211_FLAG_NEED_WDEV |
9284                                   NL80211_FLAG_NEED_RTNL,
9285         },
9286         {
9287                 .cmd = NL80211_CMD_STOP_P2P_DEVICE,
9288                 .doit = nl80211_stop_p2p_device,
9289                 .policy = nl80211_policy,
9290                 .flags = GENL_ADMIN_PERM,
9291                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
9292                                   NL80211_FLAG_NEED_RTNL,
9293         },
9294         {
9295                 .cmd = NL80211_CMD_SET_MCAST_RATE,
9296                 .doit = nl80211_set_mcast_rate,
9297                 .policy = nl80211_policy,
9298                 .flags = GENL_ADMIN_PERM,
9299                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9300                                   NL80211_FLAG_NEED_RTNL,
9301         },
9302         {
9303                 .cmd = NL80211_CMD_SET_MAC_ACL,
9304                 .doit = nl80211_set_mac_acl,
9305                 .policy = nl80211_policy,
9306                 .flags = GENL_ADMIN_PERM,
9307                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9308                                   NL80211_FLAG_NEED_RTNL,
9309         },
9310         {
9311                 .cmd = NL80211_CMD_RADAR_DETECT,
9312                 .doit = nl80211_start_radar_detection,
9313                 .policy = nl80211_policy,
9314                 .flags = GENL_ADMIN_PERM,
9315                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9316                                   NL80211_FLAG_NEED_RTNL,
9317         },
9318         {
9319                 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES,
9320                 .doit = nl80211_get_protocol_features,
9321                 .policy = nl80211_policy,
9322         },
9323         {
9324                 .cmd = NL80211_CMD_UPDATE_FT_IES,
9325                 .doit = nl80211_update_ft_ies,
9326                 .policy = nl80211_policy,
9327                 .flags = GENL_ADMIN_PERM,
9328                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9329                                   NL80211_FLAG_NEED_RTNL,
9330         },
9331         {
9332                 .cmd = NL80211_CMD_CRIT_PROTOCOL_START,
9333                 .doit = nl80211_crit_protocol_start,
9334                 .policy = nl80211_policy,
9335                 .flags = GENL_ADMIN_PERM,
9336                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
9337                                   NL80211_FLAG_NEED_RTNL,
9338         },
9339         {
9340                 .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP,
9341                 .doit = nl80211_crit_protocol_stop,
9342                 .policy = nl80211_policy,
9343                 .flags = GENL_ADMIN_PERM,
9344                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
9345                                   NL80211_FLAG_NEED_RTNL,
9346         },
9347         {
9348                 .cmd = NL80211_CMD_GET_COALESCE,
9349                 .doit = nl80211_get_coalesce,
9350                 .policy = nl80211_policy,
9351                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
9352                                   NL80211_FLAG_NEED_RTNL,
9353         },
9354         {
9355                 .cmd = NL80211_CMD_SET_COALESCE,
9356                 .doit = nl80211_set_coalesce,
9357                 .policy = nl80211_policy,
9358                 .flags = GENL_ADMIN_PERM,
9359                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
9360                                   NL80211_FLAG_NEED_RTNL,
9361         }
9362 };
9363
9364 static struct genl_multicast_group nl80211_mlme_mcgrp = {
9365         .name = "mlme",
9366 };
9367
9368 /* multicast groups */
9369 static struct genl_multicast_group nl80211_config_mcgrp = {
9370         .name = "config",
9371 };
9372 static struct genl_multicast_group nl80211_scan_mcgrp = {
9373         .name = "scan",
9374 };
9375 static struct genl_multicast_group nl80211_regulatory_mcgrp = {
9376         .name = "regulatory",
9377 };
9378
9379 /* notification functions */
9380
9381 void nl80211_notify_dev_rename(struct cfg80211_registered_device *rdev)
9382 {
9383         struct sk_buff *msg;
9384         struct nl80211_dump_wiphy_state state = {};
9385
9386         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9387         if (!msg)
9388                 return;
9389
9390         if (nl80211_send_wiphy(rdev, msg, 0, 0, 0, &state) < 0) {
9391                 nlmsg_free(msg);
9392                 return;
9393         }
9394
9395         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9396                                 nl80211_config_mcgrp.id, GFP_KERNEL);
9397 }
9398
9399 static int nl80211_add_scan_req(struct sk_buff *msg,
9400                                 struct cfg80211_registered_device *rdev)
9401 {
9402         struct cfg80211_scan_request *req = rdev->scan_req;
9403         struct nlattr *nest;
9404         int i;
9405
9406         if (WARN_ON(!req))
9407                 return 0;
9408
9409         nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS);
9410         if (!nest)
9411                 goto nla_put_failure;
9412         for (i = 0; i < req->n_ssids; i++) {
9413                 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid))
9414                         goto nla_put_failure;
9415         }
9416         nla_nest_end(msg, nest);
9417
9418         nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
9419         if (!nest)
9420                 goto nla_put_failure;
9421         for (i = 0; i < req->n_channels; i++) {
9422                 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
9423                         goto nla_put_failure;
9424         }
9425         nla_nest_end(msg, nest);
9426
9427         if (req->ie &&
9428             nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie))
9429                 goto nla_put_failure;
9430
9431         if (req->flags)
9432                 nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags);
9433
9434         return 0;
9435  nla_put_failure:
9436         return -ENOBUFS;
9437 }
9438
9439 static int nl80211_send_scan_msg(struct sk_buff *msg,
9440                                  struct cfg80211_registered_device *rdev,
9441                                  struct wireless_dev *wdev,
9442                                  u32 portid, u32 seq, int flags,
9443                                  u32 cmd)
9444 {
9445         void *hdr;
9446
9447         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
9448         if (!hdr)
9449                 return -1;
9450
9451         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9452             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
9453                                          wdev->netdev->ifindex)) ||
9454             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
9455                 goto nla_put_failure;
9456
9457         /* ignore errors and send incomplete event anyway */
9458         nl80211_add_scan_req(msg, rdev);
9459
9460         return genlmsg_end(msg, hdr);
9461
9462  nla_put_failure:
9463         genlmsg_cancel(msg, hdr);
9464         return -EMSGSIZE;
9465 }
9466
9467 static int
9468 nl80211_send_sched_scan_msg(struct sk_buff *msg,
9469                             struct cfg80211_registered_device *rdev,
9470                             struct net_device *netdev,
9471                             u32 portid, u32 seq, int flags, u32 cmd)
9472 {
9473         void *hdr;
9474
9475         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
9476         if (!hdr)
9477                 return -1;
9478
9479         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9480             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
9481                 goto nla_put_failure;
9482
9483         return genlmsg_end(msg, hdr);
9484
9485  nla_put_failure:
9486         genlmsg_cancel(msg, hdr);
9487         return -EMSGSIZE;
9488 }
9489
9490 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
9491                              struct wireless_dev *wdev)
9492 {
9493         struct sk_buff *msg;
9494
9495         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9496         if (!msg)
9497                 return;
9498
9499         if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
9500                                   NL80211_CMD_TRIGGER_SCAN) < 0) {
9501                 nlmsg_free(msg);
9502                 return;
9503         }
9504
9505         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9506                                 nl80211_scan_mcgrp.id, GFP_KERNEL);
9507 }
9508
9509 void nl80211_send_scan_done(struct cfg80211_registered_device *rdev,
9510                             struct wireless_dev *wdev)
9511 {
9512         struct sk_buff *msg;
9513
9514         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9515         if (!msg)
9516                 return;
9517
9518         if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
9519                                   NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
9520                 nlmsg_free(msg);
9521                 return;
9522         }
9523
9524         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9525                                 nl80211_scan_mcgrp.id, GFP_KERNEL);
9526 }
9527
9528 void nl80211_send_scan_aborted(struct cfg80211_registered_device *rdev,
9529                                struct wireless_dev *wdev)
9530 {
9531         struct sk_buff *msg;
9532
9533         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9534         if (!msg)
9535                 return;
9536
9537         if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
9538                                   NL80211_CMD_SCAN_ABORTED) < 0) {
9539                 nlmsg_free(msg);
9540                 return;
9541         }
9542
9543         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9544                                 nl80211_scan_mcgrp.id, GFP_KERNEL);
9545 }
9546
9547 void nl80211_send_sched_scan_results(struct cfg80211_registered_device *rdev,
9548                                      struct net_device *netdev)
9549 {
9550         struct sk_buff *msg;
9551
9552         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9553         if (!msg)
9554                 return;
9555
9556         if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0,
9557                                         NL80211_CMD_SCHED_SCAN_RESULTS) < 0) {
9558                 nlmsg_free(msg);
9559                 return;
9560         }
9561
9562         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9563                                 nl80211_scan_mcgrp.id, GFP_KERNEL);
9564 }
9565
9566 void nl80211_send_sched_scan(struct cfg80211_registered_device *rdev,
9567                              struct net_device *netdev, u32 cmd)
9568 {
9569         struct sk_buff *msg;
9570
9571         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9572         if (!msg)
9573                 return;
9574
9575         if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0, cmd) < 0) {
9576                 nlmsg_free(msg);
9577                 return;
9578         }
9579
9580         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9581                                 nl80211_scan_mcgrp.id, GFP_KERNEL);
9582 }
9583
9584 /*
9585  * This can happen on global regulatory changes or device specific settings
9586  * based on custom world regulatory domains.
9587  */
9588 void nl80211_send_reg_change_event(struct regulatory_request *request)
9589 {
9590         struct sk_buff *msg;
9591         void *hdr;
9592
9593         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9594         if (!msg)
9595                 return;
9596
9597         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_CHANGE);
9598         if (!hdr) {
9599                 nlmsg_free(msg);
9600                 return;
9601         }
9602
9603         /* Userspace can always count this one always being set */
9604         if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator))
9605                 goto nla_put_failure;
9606
9607         if (request->alpha2[0] == '0' && request->alpha2[1] == '0') {
9608                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
9609                                NL80211_REGDOM_TYPE_WORLD))
9610                         goto nla_put_failure;
9611         } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') {
9612                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
9613                                NL80211_REGDOM_TYPE_CUSTOM_WORLD))
9614                         goto nla_put_failure;
9615         } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
9616                    request->intersect) {
9617                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
9618                                NL80211_REGDOM_TYPE_INTERSECTION))
9619                         goto nla_put_failure;
9620         } else {
9621                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
9622                                NL80211_REGDOM_TYPE_COUNTRY) ||
9623                     nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
9624                                    request->alpha2))
9625                         goto nla_put_failure;
9626         }
9627
9628         if (request->wiphy_idx != WIPHY_IDX_INVALID &&
9629             nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx))
9630                 goto nla_put_failure;
9631
9632         genlmsg_end(msg, hdr);
9633
9634         rcu_read_lock();
9635         genlmsg_multicast_allns(msg, 0, nl80211_regulatory_mcgrp.id,
9636                                 GFP_ATOMIC);
9637         rcu_read_unlock();
9638
9639         return;
9640
9641 nla_put_failure:
9642         genlmsg_cancel(msg, hdr);
9643         nlmsg_free(msg);
9644 }
9645
9646 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
9647                                     struct net_device *netdev,
9648                                     const u8 *buf, size_t len,
9649                                     enum nl80211_commands cmd, gfp_t gfp)
9650 {
9651         struct sk_buff *msg;
9652         void *hdr;
9653
9654         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9655         if (!msg)
9656                 return;
9657
9658         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
9659         if (!hdr) {
9660                 nlmsg_free(msg);
9661                 return;
9662         }
9663
9664         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9665             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
9666             nla_put(msg, NL80211_ATTR_FRAME, len, buf))
9667                 goto nla_put_failure;
9668
9669         genlmsg_end(msg, hdr);
9670
9671         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9672                                 nl80211_mlme_mcgrp.id, gfp);
9673         return;
9674
9675  nla_put_failure:
9676         genlmsg_cancel(msg, hdr);
9677         nlmsg_free(msg);
9678 }
9679
9680 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
9681                           struct net_device *netdev, const u8 *buf,
9682                           size_t len, gfp_t gfp)
9683 {
9684         nl80211_send_mlme_event(rdev, netdev, buf, len,
9685                                 NL80211_CMD_AUTHENTICATE, gfp);
9686 }
9687
9688 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
9689                            struct net_device *netdev, const u8 *buf,
9690                            size_t len, gfp_t gfp)
9691 {
9692         nl80211_send_mlme_event(rdev, netdev, buf, len,
9693                                 NL80211_CMD_ASSOCIATE, gfp);
9694 }
9695
9696 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
9697                          struct net_device *netdev, const u8 *buf,
9698                          size_t len, gfp_t gfp)
9699 {
9700         nl80211_send_mlme_event(rdev, netdev, buf, len,
9701                                 NL80211_CMD_DEAUTHENTICATE, gfp);
9702 }
9703
9704 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
9705                            struct net_device *netdev, const u8 *buf,
9706                            size_t len, gfp_t gfp)
9707 {
9708         nl80211_send_mlme_event(rdev, netdev, buf, len,
9709                                 NL80211_CMD_DISASSOCIATE, gfp);
9710 }
9711
9712 void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf,
9713                                   size_t len)
9714 {
9715         struct wireless_dev *wdev = dev->ieee80211_ptr;
9716         struct wiphy *wiphy = wdev->wiphy;
9717         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
9718         const struct ieee80211_mgmt *mgmt = (void *)buf;
9719         u32 cmd;
9720
9721         if (WARN_ON(len < 2))
9722                 return;
9723
9724         if (ieee80211_is_deauth(mgmt->frame_control))
9725                 cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE;
9726         else
9727                 cmd = NL80211_CMD_UNPROT_DISASSOCIATE;
9728
9729         trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len);
9730         nl80211_send_mlme_event(rdev, dev, buf, len, cmd, GFP_ATOMIC);
9731 }
9732 EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt);
9733
9734 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
9735                                       struct net_device *netdev, int cmd,
9736                                       const u8 *addr, gfp_t gfp)
9737 {
9738         struct sk_buff *msg;
9739         void *hdr;
9740
9741         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9742         if (!msg)
9743                 return;
9744
9745         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
9746         if (!hdr) {
9747                 nlmsg_free(msg);
9748                 return;
9749         }
9750
9751         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9752             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
9753             nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
9754             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
9755                 goto nla_put_failure;
9756
9757         genlmsg_end(msg, hdr);
9758
9759         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9760                                 nl80211_mlme_mcgrp.id, gfp);
9761         return;
9762
9763  nla_put_failure:
9764         genlmsg_cancel(msg, hdr);
9765         nlmsg_free(msg);
9766 }
9767
9768 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
9769                                struct net_device *netdev, const u8 *addr,
9770                                gfp_t gfp)
9771 {
9772         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
9773                                   addr, gfp);
9774 }
9775
9776 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
9777                                 struct net_device *netdev, const u8 *addr,
9778                                 gfp_t gfp)
9779 {
9780         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
9781                                   addr, gfp);
9782 }
9783
9784 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
9785                                  struct net_device *netdev, const u8 *bssid,
9786                                  const u8 *req_ie, size_t req_ie_len,
9787                                  const u8 *resp_ie, size_t resp_ie_len,
9788                                  u16 status, gfp_t gfp)
9789 {
9790         struct sk_buff *msg;
9791         void *hdr;
9792
9793         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9794         if (!msg)
9795                 return;
9796
9797         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
9798         if (!hdr) {
9799                 nlmsg_free(msg);
9800                 return;
9801         }
9802
9803         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9804             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
9805             (bssid && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid)) ||
9806             nla_put_u16(msg, NL80211_ATTR_STATUS_CODE, status) ||
9807             (req_ie &&
9808              nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
9809             (resp_ie &&
9810              nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
9811                 goto nla_put_failure;
9812
9813         genlmsg_end(msg, hdr);
9814
9815         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9816                                 nl80211_mlme_mcgrp.id, gfp);
9817         return;
9818
9819  nla_put_failure:
9820         genlmsg_cancel(msg, hdr);
9821         nlmsg_free(msg);
9822
9823 }
9824
9825 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
9826                          struct net_device *netdev, const u8 *bssid,
9827                          const u8 *req_ie, size_t req_ie_len,
9828                          const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp)
9829 {
9830         struct sk_buff *msg;
9831         void *hdr;
9832
9833         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9834         if (!msg)
9835                 return;
9836
9837         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
9838         if (!hdr) {
9839                 nlmsg_free(msg);
9840                 return;
9841         }
9842
9843         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9844             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
9845             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid) ||
9846             (req_ie &&
9847              nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
9848             (resp_ie &&
9849              nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
9850                 goto nla_put_failure;
9851
9852         genlmsg_end(msg, hdr);
9853
9854         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9855                                 nl80211_mlme_mcgrp.id, gfp);
9856         return;
9857
9858  nla_put_failure:
9859         genlmsg_cancel(msg, hdr);
9860         nlmsg_free(msg);
9861
9862 }
9863
9864 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
9865                                struct net_device *netdev, u16 reason,
9866                                const u8 *ie, size_t ie_len, bool from_ap)
9867 {
9868         struct sk_buff *msg;
9869         void *hdr;
9870
9871         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9872         if (!msg)
9873                 return;
9874
9875         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
9876         if (!hdr) {
9877                 nlmsg_free(msg);
9878                 return;
9879         }
9880
9881         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9882             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
9883             (from_ap && reason &&
9884              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) ||
9885             (from_ap &&
9886              nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) ||
9887             (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie)))
9888                 goto nla_put_failure;
9889
9890         genlmsg_end(msg, hdr);
9891
9892         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9893                                 nl80211_mlme_mcgrp.id, GFP_KERNEL);
9894         return;
9895
9896  nla_put_failure:
9897         genlmsg_cancel(msg, hdr);
9898         nlmsg_free(msg);
9899
9900 }
9901
9902 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
9903                              struct net_device *netdev, const u8 *bssid,
9904                              gfp_t gfp)
9905 {
9906         struct sk_buff *msg;
9907         void *hdr;
9908
9909         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9910         if (!msg)
9911                 return;
9912
9913         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
9914         if (!hdr) {
9915                 nlmsg_free(msg);
9916                 return;
9917         }
9918
9919         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9920             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
9921             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
9922                 goto nla_put_failure;
9923
9924         genlmsg_end(msg, hdr);
9925
9926         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9927                                 nl80211_mlme_mcgrp.id, gfp);
9928         return;
9929
9930  nla_put_failure:
9931         genlmsg_cancel(msg, hdr);
9932         nlmsg_free(msg);
9933 }
9934
9935 void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr,
9936                                         const u8* ie, u8 ie_len, gfp_t gfp)
9937 {
9938         struct wireless_dev *wdev = dev->ieee80211_ptr;
9939         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
9940         struct sk_buff *msg;
9941         void *hdr;
9942
9943         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT))
9944                 return;
9945
9946         trace_cfg80211_notify_new_peer_candidate(dev, addr);
9947
9948         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9949         if (!msg)
9950                 return;
9951
9952         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
9953         if (!hdr) {
9954                 nlmsg_free(msg);
9955                 return;
9956         }
9957
9958         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9959             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
9960             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
9961             (ie_len && ie &&
9962              nla_put(msg, NL80211_ATTR_IE, ie_len , ie)))
9963                 goto nla_put_failure;
9964
9965         genlmsg_end(msg, hdr);
9966
9967         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9968                                 nl80211_mlme_mcgrp.id, gfp);
9969         return;
9970
9971  nla_put_failure:
9972         genlmsg_cancel(msg, hdr);
9973         nlmsg_free(msg);
9974 }
9975 EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate);
9976
9977 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
9978                                  struct net_device *netdev, const u8 *addr,
9979                                  enum nl80211_key_type key_type, int key_id,
9980                                  const u8 *tsc, gfp_t gfp)
9981 {
9982         struct sk_buff *msg;
9983         void *hdr;
9984
9985         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9986         if (!msg)
9987                 return;
9988
9989         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
9990         if (!hdr) {
9991                 nlmsg_free(msg);
9992                 return;
9993         }
9994
9995         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9996             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
9997             (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
9998             nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) ||
9999             (key_id != -1 &&
10000              nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) ||
10001             (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc)))
10002                 goto nla_put_failure;
10003
10004         genlmsg_end(msg, hdr);
10005
10006         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10007                                 nl80211_mlme_mcgrp.id, gfp);
10008         return;
10009
10010  nla_put_failure:
10011         genlmsg_cancel(msg, hdr);
10012         nlmsg_free(msg);
10013 }
10014
10015 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
10016                                     struct ieee80211_channel *channel_before,
10017                                     struct ieee80211_channel *channel_after)
10018 {
10019         struct sk_buff *msg;
10020         void *hdr;
10021         struct nlattr *nl_freq;
10022
10023         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
10024         if (!msg)
10025                 return;
10026
10027         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
10028         if (!hdr) {
10029                 nlmsg_free(msg);
10030                 return;
10031         }
10032
10033         /*
10034          * Since we are applying the beacon hint to a wiphy we know its
10035          * wiphy_idx is valid
10036          */
10037         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
10038                 goto nla_put_failure;
10039
10040         /* Before */
10041         nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE);
10042         if (!nl_freq)
10043                 goto nla_put_failure;
10044         if (nl80211_msg_put_channel(msg, channel_before, false))
10045                 goto nla_put_failure;
10046         nla_nest_end(msg, nl_freq);
10047
10048         /* After */
10049         nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER);
10050         if (!nl_freq)
10051                 goto nla_put_failure;
10052         if (nl80211_msg_put_channel(msg, channel_after, false))
10053                 goto nla_put_failure;
10054         nla_nest_end(msg, nl_freq);
10055
10056         genlmsg_end(msg, hdr);
10057
10058         rcu_read_lock();
10059         genlmsg_multicast_allns(msg, 0, nl80211_regulatory_mcgrp.id,
10060                                 GFP_ATOMIC);
10061         rcu_read_unlock();
10062
10063         return;
10064
10065 nla_put_failure:
10066         genlmsg_cancel(msg, hdr);
10067         nlmsg_free(msg);
10068 }
10069
10070 static void nl80211_send_remain_on_chan_event(
10071         int cmd, struct cfg80211_registered_device *rdev,
10072         struct wireless_dev *wdev, u64 cookie,
10073         struct ieee80211_channel *chan,
10074         unsigned int duration, gfp_t gfp)
10075 {
10076         struct sk_buff *msg;
10077         void *hdr;
10078
10079         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10080         if (!msg)
10081                 return;
10082
10083         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
10084         if (!hdr) {
10085                 nlmsg_free(msg);
10086                 return;
10087         }
10088
10089         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10090             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
10091                                          wdev->netdev->ifindex)) ||
10092             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
10093             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) ||
10094             nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
10095                         NL80211_CHAN_NO_HT) ||
10096             nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
10097                 goto nla_put_failure;
10098
10099         if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL &&
10100             nla_put_u32(msg, NL80211_ATTR_DURATION, duration))
10101                 goto nla_put_failure;
10102
10103         genlmsg_end(msg, hdr);
10104
10105         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10106                                 nl80211_mlme_mcgrp.id, gfp);
10107         return;
10108
10109  nla_put_failure:
10110         genlmsg_cancel(msg, hdr);
10111         nlmsg_free(msg);
10112 }
10113
10114 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie,
10115                                struct ieee80211_channel *chan,
10116                                unsigned int duration, gfp_t gfp)
10117 {
10118         struct wiphy *wiphy = wdev->wiphy;
10119         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10120
10121         trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration);
10122         nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
10123                                           rdev, wdev, cookie, chan,
10124                                           duration, gfp);
10125 }
10126 EXPORT_SYMBOL(cfg80211_ready_on_channel);
10127
10128 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie,
10129                                         struct ieee80211_channel *chan,
10130                                         gfp_t gfp)
10131 {
10132         struct wiphy *wiphy = wdev->wiphy;
10133         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10134
10135         trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan);
10136         nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
10137                                           rdev, wdev, cookie, chan, 0, gfp);
10138 }
10139 EXPORT_SYMBOL(cfg80211_remain_on_channel_expired);
10140
10141 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr,
10142                       struct station_info *sinfo, gfp_t gfp)
10143 {
10144         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
10145         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10146         struct sk_buff *msg;
10147
10148         trace_cfg80211_new_sta(dev, mac_addr, sinfo);
10149
10150         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10151         if (!msg)
10152                 return;
10153
10154         if (nl80211_send_station(msg, 0, 0, 0,
10155                                  rdev, dev, mac_addr, sinfo) < 0) {
10156                 nlmsg_free(msg);
10157                 return;
10158         }
10159
10160         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10161                                 nl80211_mlme_mcgrp.id, gfp);
10162 }
10163 EXPORT_SYMBOL(cfg80211_new_sta);
10164
10165 void cfg80211_del_sta(struct net_device *dev, const u8 *mac_addr, gfp_t gfp)
10166 {
10167         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
10168         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10169         struct sk_buff *msg;
10170         void *hdr;
10171
10172         trace_cfg80211_del_sta(dev, mac_addr);
10173
10174         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10175         if (!msg)
10176                 return;
10177
10178         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_STATION);
10179         if (!hdr) {
10180                 nlmsg_free(msg);
10181                 return;
10182         }
10183
10184         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
10185             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
10186                 goto nla_put_failure;
10187
10188         genlmsg_end(msg, hdr);
10189
10190         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10191                                 nl80211_mlme_mcgrp.id, gfp);
10192         return;
10193
10194  nla_put_failure:
10195         genlmsg_cancel(msg, hdr);
10196         nlmsg_free(msg);
10197 }
10198 EXPORT_SYMBOL(cfg80211_del_sta);
10199
10200 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr,
10201                           enum nl80211_connect_failed_reason reason,
10202                           gfp_t gfp)
10203 {
10204         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
10205         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10206         struct sk_buff *msg;
10207         void *hdr;
10208
10209         msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
10210         if (!msg)
10211                 return;
10212
10213         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED);
10214         if (!hdr) {
10215                 nlmsg_free(msg);
10216                 return;
10217         }
10218
10219         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
10220             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
10221             nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason))
10222                 goto nla_put_failure;
10223
10224         genlmsg_end(msg, hdr);
10225
10226         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10227                                 nl80211_mlme_mcgrp.id, gfp);
10228         return;
10229
10230  nla_put_failure:
10231         genlmsg_cancel(msg, hdr);
10232         nlmsg_free(msg);
10233 }
10234 EXPORT_SYMBOL(cfg80211_conn_failed);
10235
10236 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
10237                                        const u8 *addr, gfp_t gfp)
10238 {
10239         struct wireless_dev *wdev = dev->ieee80211_ptr;
10240         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
10241         struct sk_buff *msg;
10242         void *hdr;
10243         u32 nlportid = ACCESS_ONCE(wdev->ap_unexpected_nlportid);
10244
10245         if (!nlportid)
10246                 return false;
10247
10248         msg = nlmsg_new(100, gfp);
10249         if (!msg)
10250                 return true;
10251
10252         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
10253         if (!hdr) {
10254                 nlmsg_free(msg);
10255                 return true;
10256         }
10257
10258         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10259             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
10260             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
10261                 goto nla_put_failure;
10262
10263         genlmsg_end(msg, hdr);
10264         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
10265         return true;
10266
10267  nla_put_failure:
10268         genlmsg_cancel(msg, hdr);
10269         nlmsg_free(msg);
10270         return true;
10271 }
10272
10273 bool cfg80211_rx_spurious_frame(struct net_device *dev,
10274                                 const u8 *addr, gfp_t gfp)
10275 {
10276         struct wireless_dev *wdev = dev->ieee80211_ptr;
10277         bool ret;
10278
10279         trace_cfg80211_rx_spurious_frame(dev, addr);
10280
10281         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
10282                     wdev->iftype != NL80211_IFTYPE_P2P_GO)) {
10283                 trace_cfg80211_return_bool(false);
10284                 return false;
10285         }
10286         ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
10287                                          addr, gfp);
10288         trace_cfg80211_return_bool(ret);
10289         return ret;
10290 }
10291 EXPORT_SYMBOL(cfg80211_rx_spurious_frame);
10292
10293 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev,
10294                                         const u8 *addr, gfp_t gfp)
10295 {
10296         struct wireless_dev *wdev = dev->ieee80211_ptr;
10297         bool ret;
10298
10299         trace_cfg80211_rx_unexpected_4addr_frame(dev, addr);
10300
10301         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
10302                     wdev->iftype != NL80211_IFTYPE_P2P_GO &&
10303                     wdev->iftype != NL80211_IFTYPE_AP_VLAN)) {
10304                 trace_cfg80211_return_bool(false);
10305                 return false;
10306         }
10307         ret = __nl80211_unexpected_frame(dev,
10308                                          NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
10309                                          addr, gfp);
10310         trace_cfg80211_return_bool(ret);
10311         return ret;
10312 }
10313 EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame);
10314
10315 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
10316                       struct wireless_dev *wdev, u32 nlportid,
10317                       int freq, int sig_dbm,
10318                       const u8 *buf, size_t len, gfp_t gfp)
10319 {
10320         struct net_device *netdev = wdev->netdev;
10321         struct sk_buff *msg;
10322         void *hdr;
10323
10324         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10325         if (!msg)
10326                 return -ENOMEM;
10327
10328         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
10329         if (!hdr) {
10330                 nlmsg_free(msg);
10331                 return -ENOMEM;
10332         }
10333
10334         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10335             (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
10336                                         netdev->ifindex)) ||
10337             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
10338             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) ||
10339             (sig_dbm &&
10340              nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
10341             nla_put(msg, NL80211_ATTR_FRAME, len, buf))
10342                 goto nla_put_failure;
10343
10344         genlmsg_end(msg, hdr);
10345
10346         return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
10347
10348  nla_put_failure:
10349         genlmsg_cancel(msg, hdr);
10350         nlmsg_free(msg);
10351         return -ENOBUFS;
10352 }
10353
10354 void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie,
10355                              const u8 *buf, size_t len, bool ack, gfp_t gfp)
10356 {
10357         struct wiphy *wiphy = wdev->wiphy;
10358         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10359         struct net_device *netdev = wdev->netdev;
10360         struct sk_buff *msg;
10361         void *hdr;
10362
10363         trace_cfg80211_mgmt_tx_status(wdev, cookie, ack);
10364
10365         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10366         if (!msg)
10367                 return;
10368
10369         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS);
10370         if (!hdr) {
10371                 nlmsg_free(msg);
10372                 return;
10373         }
10374
10375         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10376             (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
10377                                    netdev->ifindex)) ||
10378             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
10379             nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
10380             nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) ||
10381             (ack && nla_put_flag(msg, NL80211_ATTR_ACK)))
10382                 goto nla_put_failure;
10383
10384         genlmsg_end(msg, hdr);
10385
10386         genlmsg_multicast(msg, 0, nl80211_mlme_mcgrp.id, gfp);
10387         return;
10388
10389  nla_put_failure:
10390         genlmsg_cancel(msg, hdr);
10391         nlmsg_free(msg);
10392 }
10393 EXPORT_SYMBOL(cfg80211_mgmt_tx_status);
10394
10395 void cfg80211_cqm_rssi_notify(struct net_device *dev,
10396                               enum nl80211_cqm_rssi_threshold_event rssi_event,
10397                               gfp_t gfp)
10398 {
10399         struct wireless_dev *wdev = dev->ieee80211_ptr;
10400         struct wiphy *wiphy = wdev->wiphy;
10401         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10402         struct sk_buff *msg;
10403         struct nlattr *pinfoattr;
10404         void *hdr;
10405
10406         trace_cfg80211_cqm_rssi_notify(dev, rssi_event);
10407
10408         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10409         if (!msg)
10410                 return;
10411
10412         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
10413         if (!hdr) {
10414                 nlmsg_free(msg);
10415                 return;
10416         }
10417
10418         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10419             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
10420                 goto nla_put_failure;
10421
10422         pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
10423         if (!pinfoattr)
10424                 goto nla_put_failure;
10425
10426         if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
10427                         rssi_event))
10428                 goto nla_put_failure;
10429
10430         nla_nest_end(msg, pinfoattr);
10431
10432         genlmsg_end(msg, hdr);
10433
10434         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10435                                 nl80211_mlme_mcgrp.id, gfp);
10436         return;
10437
10438  nla_put_failure:
10439         genlmsg_cancel(msg, hdr);
10440         nlmsg_free(msg);
10441 }
10442 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify);
10443
10444 static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
10445                                      struct net_device *netdev, const u8 *bssid,
10446                                      const u8 *replay_ctr, gfp_t gfp)
10447 {
10448         struct sk_buff *msg;
10449         struct nlattr *rekey_attr;
10450         void *hdr;
10451
10452         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10453         if (!msg)
10454                 return;
10455
10456         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
10457         if (!hdr) {
10458                 nlmsg_free(msg);
10459                 return;
10460         }
10461
10462         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10463             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10464             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
10465                 goto nla_put_failure;
10466
10467         rekey_attr = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA);
10468         if (!rekey_attr)
10469                 goto nla_put_failure;
10470
10471         if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR,
10472                     NL80211_REPLAY_CTR_LEN, replay_ctr))
10473                 goto nla_put_failure;
10474
10475         nla_nest_end(msg, rekey_attr);
10476
10477         genlmsg_end(msg, hdr);
10478
10479         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10480                                 nl80211_mlme_mcgrp.id, gfp);
10481         return;
10482
10483  nla_put_failure:
10484         genlmsg_cancel(msg, hdr);
10485         nlmsg_free(msg);
10486 }
10487
10488 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid,
10489                                const u8 *replay_ctr, gfp_t gfp)
10490 {
10491         struct wireless_dev *wdev = dev->ieee80211_ptr;
10492         struct wiphy *wiphy = wdev->wiphy;
10493         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10494
10495         trace_cfg80211_gtk_rekey_notify(dev, bssid);
10496         nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp);
10497 }
10498 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify);
10499
10500 static void
10501 nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
10502                                struct net_device *netdev, int index,
10503                                const u8 *bssid, bool preauth, gfp_t gfp)
10504 {
10505         struct sk_buff *msg;
10506         struct nlattr *attr;
10507         void *hdr;
10508
10509         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10510         if (!msg)
10511                 return;
10512
10513         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
10514         if (!hdr) {
10515                 nlmsg_free(msg);
10516                 return;
10517         }
10518
10519         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10520             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
10521                 goto nla_put_failure;
10522
10523         attr = nla_nest_start(msg, NL80211_ATTR_PMKSA_CANDIDATE);
10524         if (!attr)
10525                 goto nla_put_failure;
10526
10527         if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) ||
10528             nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) ||
10529             (preauth &&
10530              nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH)))
10531                 goto nla_put_failure;
10532
10533         nla_nest_end(msg, attr);
10534
10535         genlmsg_end(msg, hdr);
10536
10537         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10538                                 nl80211_mlme_mcgrp.id, gfp);
10539         return;
10540
10541  nla_put_failure:
10542         genlmsg_cancel(msg, hdr);
10543         nlmsg_free(msg);
10544 }
10545
10546 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index,
10547                                      const u8 *bssid, bool preauth, gfp_t gfp)
10548 {
10549         struct wireless_dev *wdev = dev->ieee80211_ptr;
10550         struct wiphy *wiphy = wdev->wiphy;
10551         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10552
10553         trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth);
10554         nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp);
10555 }
10556 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify);
10557
10558 static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev,
10559                                      struct net_device *netdev,
10560                                      struct cfg80211_chan_def *chandef,
10561                                      gfp_t gfp)
10562 {
10563         struct sk_buff *msg;
10564         void *hdr;
10565
10566         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10567         if (!msg)
10568                 return;
10569
10570         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CH_SWITCH_NOTIFY);
10571         if (!hdr) {
10572                 nlmsg_free(msg);
10573                 return;
10574         }
10575
10576         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
10577                 goto nla_put_failure;
10578
10579         if (nl80211_send_chandef(msg, chandef))
10580                 goto nla_put_failure;
10581
10582         genlmsg_end(msg, hdr);
10583
10584         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10585                                 nl80211_mlme_mcgrp.id, gfp);
10586         return;
10587
10588  nla_put_failure:
10589         genlmsg_cancel(msg, hdr);
10590         nlmsg_free(msg);
10591 }
10592
10593 void cfg80211_ch_switch_notify(struct net_device *dev,
10594                                struct cfg80211_chan_def *chandef)
10595 {
10596         struct wireless_dev *wdev = dev->ieee80211_ptr;
10597         struct wiphy *wiphy = wdev->wiphy;
10598         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10599
10600         trace_cfg80211_ch_switch_notify(dev, chandef);
10601
10602         wdev_lock(wdev);
10603
10604         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
10605                     wdev->iftype != NL80211_IFTYPE_P2P_GO))
10606                 goto out;
10607
10608         wdev->channel = chandef->chan;
10609         nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL);
10610 out:
10611         wdev_unlock(wdev);
10612         return;
10613 }
10614 EXPORT_SYMBOL(cfg80211_ch_switch_notify);
10615
10616 void cfg80211_cqm_txe_notify(struct net_device *dev,
10617                              const u8 *peer, u32 num_packets,
10618                              u32 rate, u32 intvl, gfp_t gfp)
10619 {
10620         struct wireless_dev *wdev = dev->ieee80211_ptr;
10621         struct wiphy *wiphy = wdev->wiphy;
10622         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10623         struct sk_buff *msg;
10624         struct nlattr *pinfoattr;
10625         void *hdr;
10626
10627         msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
10628         if (!msg)
10629                 return;
10630
10631         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
10632         if (!hdr) {
10633                 nlmsg_free(msg);
10634                 return;
10635         }
10636
10637         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10638             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
10639             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer))
10640                 goto nla_put_failure;
10641
10642         pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
10643         if (!pinfoattr)
10644                 goto nla_put_failure;
10645
10646         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets))
10647                 goto nla_put_failure;
10648
10649         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate))
10650                 goto nla_put_failure;
10651
10652         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl))
10653                 goto nla_put_failure;
10654
10655         nla_nest_end(msg, pinfoattr);
10656
10657         genlmsg_end(msg, hdr);
10658
10659         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10660                                 nl80211_mlme_mcgrp.id, gfp);
10661         return;
10662
10663  nla_put_failure:
10664         genlmsg_cancel(msg, hdr);
10665         nlmsg_free(msg);
10666 }
10667 EXPORT_SYMBOL(cfg80211_cqm_txe_notify);
10668
10669 void
10670 nl80211_radar_notify(struct cfg80211_registered_device *rdev,
10671                      struct cfg80211_chan_def *chandef,
10672                      enum nl80211_radar_event event,
10673                      struct net_device *netdev, gfp_t gfp)
10674 {
10675         struct sk_buff *msg;
10676         void *hdr;
10677
10678         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10679         if (!msg)
10680                 return;
10681
10682         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT);
10683         if (!hdr) {
10684                 nlmsg_free(msg);
10685                 return;
10686         }
10687
10688         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
10689                 goto nla_put_failure;
10690
10691         /* NOP and radar events don't need a netdev parameter */
10692         if (netdev) {
10693                 struct wireless_dev *wdev = netdev->ieee80211_ptr;
10694
10695                 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10696                     nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
10697                         goto nla_put_failure;
10698         }
10699
10700         if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event))
10701                 goto nla_put_failure;
10702
10703         if (nl80211_send_chandef(msg, chandef))
10704                 goto nla_put_failure;
10705
10706         genlmsg_end(msg, hdr);
10707
10708         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10709                                 nl80211_mlme_mcgrp.id, gfp);
10710         return;
10711
10712  nla_put_failure:
10713         genlmsg_cancel(msg, hdr);
10714         nlmsg_free(msg);
10715 }
10716
10717 void cfg80211_cqm_pktloss_notify(struct net_device *dev,
10718                                  const u8 *peer, u32 num_packets, gfp_t gfp)
10719 {
10720         struct wireless_dev *wdev = dev->ieee80211_ptr;
10721         struct wiphy *wiphy = wdev->wiphy;
10722         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10723         struct sk_buff *msg;
10724         struct nlattr *pinfoattr;
10725         void *hdr;
10726
10727         trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets);
10728
10729         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10730         if (!msg)
10731                 return;
10732
10733         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
10734         if (!hdr) {
10735                 nlmsg_free(msg);
10736                 return;
10737         }
10738
10739         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10740             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
10741             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer))
10742                 goto nla_put_failure;
10743
10744         pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
10745         if (!pinfoattr)
10746                 goto nla_put_failure;
10747
10748         if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets))
10749                 goto nla_put_failure;
10750
10751         nla_nest_end(msg, pinfoattr);
10752
10753         genlmsg_end(msg, hdr);
10754
10755         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10756                                 nl80211_mlme_mcgrp.id, gfp);
10757         return;
10758
10759  nla_put_failure:
10760         genlmsg_cancel(msg, hdr);
10761         nlmsg_free(msg);
10762 }
10763 EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify);
10764
10765 void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
10766                            u64 cookie, bool acked, gfp_t gfp)
10767 {
10768         struct wireless_dev *wdev = dev->ieee80211_ptr;
10769         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
10770         struct sk_buff *msg;
10771         void *hdr;
10772
10773         trace_cfg80211_probe_status(dev, addr, cookie, acked);
10774
10775         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10776
10777         if (!msg)
10778                 return;
10779
10780         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT);
10781         if (!hdr) {
10782                 nlmsg_free(msg);
10783                 return;
10784         }
10785
10786         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10787             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
10788             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
10789             nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) ||
10790             (acked && nla_put_flag(msg, NL80211_ATTR_ACK)))
10791                 goto nla_put_failure;
10792
10793         genlmsg_end(msg, hdr);
10794
10795         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10796                                 nl80211_mlme_mcgrp.id, gfp);
10797         return;
10798
10799  nla_put_failure:
10800         genlmsg_cancel(msg, hdr);
10801         nlmsg_free(msg);
10802 }
10803 EXPORT_SYMBOL(cfg80211_probe_status);
10804
10805 void cfg80211_report_obss_beacon(struct wiphy *wiphy,
10806                                  const u8 *frame, size_t len,
10807                                  int freq, int sig_dbm)
10808 {
10809         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10810         struct sk_buff *msg;
10811         void *hdr;
10812         struct cfg80211_beacon_registration *reg;
10813
10814         trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm);
10815
10816         spin_lock_bh(&rdev->beacon_registrations_lock);
10817         list_for_each_entry(reg, &rdev->beacon_registrations, list) {
10818                 msg = nlmsg_new(len + 100, GFP_ATOMIC);
10819                 if (!msg) {
10820                         spin_unlock_bh(&rdev->beacon_registrations_lock);
10821                         return;
10822                 }
10823
10824                 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
10825                 if (!hdr)
10826                         goto nla_put_failure;
10827
10828                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10829                     (freq &&
10830                      nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq)) ||
10831                     (sig_dbm &&
10832                      nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
10833                     nla_put(msg, NL80211_ATTR_FRAME, len, frame))
10834                         goto nla_put_failure;
10835
10836                 genlmsg_end(msg, hdr);
10837
10838                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid);
10839         }
10840         spin_unlock_bh(&rdev->beacon_registrations_lock);
10841         return;
10842
10843  nla_put_failure:
10844         spin_unlock_bh(&rdev->beacon_registrations_lock);
10845         if (hdr)
10846                 genlmsg_cancel(msg, hdr);
10847         nlmsg_free(msg);
10848 }
10849 EXPORT_SYMBOL(cfg80211_report_obss_beacon);
10850
10851 #ifdef CONFIG_PM
10852 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev,
10853                                    struct cfg80211_wowlan_wakeup *wakeup,
10854                                    gfp_t gfp)
10855 {
10856         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
10857         struct sk_buff *msg;
10858         void *hdr;
10859         int size = 200;
10860
10861         trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup);
10862
10863         if (wakeup)
10864                 size += wakeup->packet_present_len;
10865
10866         msg = nlmsg_new(size, gfp);
10867         if (!msg)
10868                 return;
10869
10870         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN);
10871         if (!hdr)
10872                 goto free_msg;
10873
10874         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10875             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
10876                 goto free_msg;
10877
10878         if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
10879                                         wdev->netdev->ifindex))
10880                 goto free_msg;
10881
10882         if (wakeup) {
10883                 struct nlattr *reasons;
10884
10885                 reasons = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
10886
10887                 if (wakeup->disconnect &&
10888                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT))
10889                         goto free_msg;
10890                 if (wakeup->magic_pkt &&
10891                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT))
10892                         goto free_msg;
10893                 if (wakeup->gtk_rekey_failure &&
10894                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE))
10895                         goto free_msg;
10896                 if (wakeup->eap_identity_req &&
10897                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST))
10898                         goto free_msg;
10899                 if (wakeup->four_way_handshake &&
10900                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE))
10901                         goto free_msg;
10902                 if (wakeup->rfkill_release &&
10903                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))
10904                         goto free_msg;
10905
10906                 if (wakeup->pattern_idx >= 0 &&
10907                     nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
10908                                 wakeup->pattern_idx))
10909                         goto free_msg;
10910
10911                 if (wakeup->tcp_match)
10912                         nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH);
10913
10914                 if (wakeup->tcp_connlost)
10915                         nla_put_flag(msg,
10916                                      NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST);
10917
10918                 if (wakeup->tcp_nomoretokens)
10919                         nla_put_flag(msg,
10920                                 NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS);
10921
10922                 if (wakeup->packet) {
10923                         u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211;
10924                         u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN;
10925
10926                         if (!wakeup->packet_80211) {
10927                                 pkt_attr =
10928                                         NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023;
10929                                 len_attr =
10930                                         NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN;
10931                         }
10932
10933                         if (wakeup->packet_len &&
10934                             nla_put_u32(msg, len_attr, wakeup->packet_len))
10935                                 goto free_msg;
10936
10937                         if (nla_put(msg, pkt_attr, wakeup->packet_present_len,
10938                                     wakeup->packet))
10939                                 goto free_msg;
10940                 }
10941
10942                 nla_nest_end(msg, reasons);
10943         }
10944
10945         genlmsg_end(msg, hdr);
10946
10947         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10948                                 nl80211_mlme_mcgrp.id, gfp);
10949         return;
10950
10951  free_msg:
10952         nlmsg_free(msg);
10953 }
10954 EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup);
10955 #endif
10956
10957 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer,
10958                                 enum nl80211_tdls_operation oper,
10959                                 u16 reason_code, gfp_t gfp)
10960 {
10961         struct wireless_dev *wdev = dev->ieee80211_ptr;
10962         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
10963         struct sk_buff *msg;
10964         void *hdr;
10965
10966         trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper,
10967                                          reason_code);
10968
10969         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10970         if (!msg)
10971                 return;
10972
10973         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER);
10974         if (!hdr) {
10975                 nlmsg_free(msg);
10976                 return;
10977         }
10978
10979         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10980             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
10981             nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) ||
10982             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) ||
10983             (reason_code > 0 &&
10984              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code)))
10985                 goto nla_put_failure;
10986
10987         genlmsg_end(msg, hdr);
10988
10989         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10990                                 nl80211_mlme_mcgrp.id, gfp);
10991         return;
10992
10993  nla_put_failure:
10994         genlmsg_cancel(msg, hdr);
10995         nlmsg_free(msg);
10996 }
10997 EXPORT_SYMBOL(cfg80211_tdls_oper_request);
10998
10999 static int nl80211_netlink_notify(struct notifier_block * nb,
11000                                   unsigned long state,
11001                                   void *_notify)
11002 {
11003         struct netlink_notify *notify = _notify;
11004         struct cfg80211_registered_device *rdev;
11005         struct wireless_dev *wdev;
11006         struct cfg80211_beacon_registration *reg, *tmp;
11007
11008         if (state != NETLINK_URELEASE)
11009                 return NOTIFY_DONE;
11010
11011         rcu_read_lock();
11012
11013         list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
11014                 list_for_each_entry_rcu(wdev, &rdev->wdev_list, list)
11015                         cfg80211_mlme_unregister_socket(wdev, notify->portid);
11016
11017                 spin_lock_bh(&rdev->beacon_registrations_lock);
11018                 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations,
11019                                          list) {
11020                         if (reg->nlportid == notify->portid) {
11021                                 list_del(&reg->list);
11022                                 kfree(reg);
11023                                 break;
11024                         }
11025                 }
11026                 spin_unlock_bh(&rdev->beacon_registrations_lock);
11027         }
11028
11029         rcu_read_unlock();
11030
11031         return NOTIFY_DONE;
11032 }
11033
11034 static struct notifier_block nl80211_netlink_notifier = {
11035         .notifier_call = nl80211_netlink_notify,
11036 };
11037
11038 void cfg80211_ft_event(struct net_device *netdev,
11039                        struct cfg80211_ft_event_params *ft_event)
11040 {
11041         struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
11042         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
11043         struct sk_buff *msg;
11044         void *hdr;
11045
11046         trace_cfg80211_ft_event(wiphy, netdev, ft_event);
11047
11048         if (!ft_event->target_ap)
11049                 return;
11050
11051         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11052         if (!msg)
11053                 return;
11054
11055         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT);
11056         if (!hdr) {
11057                 nlmsg_free(msg);
11058                 return;
11059         }
11060
11061         nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
11062         nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
11063         nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap);
11064         if (ft_event->ies)
11065                 nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies);
11066         if (ft_event->ric_ies)
11067                 nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len,
11068                         ft_event->ric_ies);
11069
11070         genlmsg_end(msg, hdr);
11071
11072         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
11073                                 nl80211_mlme_mcgrp.id, GFP_KERNEL);
11074 }
11075 EXPORT_SYMBOL(cfg80211_ft_event);
11076
11077 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp)
11078 {
11079         struct cfg80211_registered_device *rdev;
11080         struct sk_buff *msg;
11081         void *hdr;
11082         u32 nlportid;
11083
11084         rdev = wiphy_to_dev(wdev->wiphy);
11085         if (!rdev->crit_proto_nlportid)
11086                 return;
11087
11088         nlportid = rdev->crit_proto_nlportid;
11089         rdev->crit_proto_nlportid = 0;
11090
11091         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11092         if (!msg)
11093                 return;
11094
11095         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP);
11096         if (!hdr)
11097                 goto nla_put_failure;
11098
11099         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11100             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
11101                 goto nla_put_failure;
11102
11103         genlmsg_end(msg, hdr);
11104
11105         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
11106         return;
11107
11108  nla_put_failure:
11109         if (hdr)
11110                 genlmsg_cancel(msg, hdr);
11111         nlmsg_free(msg);
11112
11113 }
11114 EXPORT_SYMBOL(cfg80211_crit_proto_stopped);
11115
11116 /* initialisation/exit functions */
11117
11118 int nl80211_init(void)
11119 {
11120         int err;
11121
11122         err = genl_register_family_with_ops(&nl80211_fam,
11123                 nl80211_ops, ARRAY_SIZE(nl80211_ops));
11124         if (err)
11125                 return err;
11126
11127         err = genl_register_mc_group(&nl80211_fam, &nl80211_config_mcgrp);
11128         if (err)
11129                 goto err_out;
11130
11131         err = genl_register_mc_group(&nl80211_fam, &nl80211_scan_mcgrp);
11132         if (err)
11133                 goto err_out;
11134
11135         err = genl_register_mc_group(&nl80211_fam, &nl80211_regulatory_mcgrp);
11136         if (err)
11137                 goto err_out;
11138
11139         err = genl_register_mc_group(&nl80211_fam, &nl80211_mlme_mcgrp);
11140         if (err)
11141                 goto err_out;
11142
11143 #ifdef CONFIG_NL80211_TESTMODE
11144         err = genl_register_mc_group(&nl80211_fam, &nl80211_testmode_mcgrp);
11145         if (err)
11146                 goto err_out;
11147 #endif
11148
11149         err = netlink_register_notifier(&nl80211_netlink_notifier);
11150         if (err)
11151                 goto err_out;
11152
11153         return 0;
11154  err_out:
11155         genl_unregister_family(&nl80211_fam);
11156         return err;
11157 }
11158
11159 void nl80211_exit(void)
11160 {
11161         netlink_unregister_notifier(&nl80211_netlink_notifier);
11162         genl_unregister_family(&nl80211_fam);
11163 }