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 GTK rekey offload attributes */
 407 static const struct nla_policy
 408 nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = {
 409         [NL80211_REKEY_DATA_KEK] = { .len = NL80211_KEK_LEN },
 410         [NL80211_REKEY_DATA_KCK] = { .len = NL80211_KCK_LEN },
 411         [NL80211_REKEY_DATA_REPLAY_CTR] = { .len = NL80211_REPLAY_CTR_LEN },
 412 };
 413
 414 static const struct nla_policy
 415 nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = {
 416         [NL80211_SCHED_SCAN_MATCH_ATTR_SSID] = { .type = NLA_BINARY,
 417                                                  .len = IEEE80211_MAX_SSID_LEN },
 418         [NL80211_SCHED_SCAN_MATCH_ATTR_RSSI] = { .type = NLA_U32 },
 419 };
 420
 421 static int nl80211_prepare_wdev_dump(struct sk_buff *skb,
 422                                      struct netlink_callback *cb,
 423                                      struct cfg80211_registered_device **rdev,
 424                                      struct wireless_dev **wdev)
 425 {
 426         int err;
 427
 428         rtnl_lock();
 429
 430         if (!cb->args[0]) {
 431                 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
 432                                   nl80211_fam.attrbuf, nl80211_fam.maxattr,
 433                                   nl80211_policy);
 434                 if (err)
 435                         goto out_unlock;
 436
 437                 *wdev = __cfg80211_wdev_from_attrs(sock_net(skb->sk),
 438                                                    nl80211_fam.attrbuf);
 439                 if (IS_ERR(*wdev)) {
 440                         err = PTR_ERR(*wdev);
 441                         goto out_unlock;
 442                 }
 443                 *rdev = wiphy_to_dev((*wdev)->wiphy);
 444                 cb->args[0] = (*rdev)->wiphy_idx;
 445                 cb->args[1] = (*wdev)->identifier;
 446         } else {
 447                 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0]);
 448                 struct wireless_dev *tmp;
 449
 450                 if (!wiphy) {
 451                         err = -ENODEV;
 452                         goto out_unlock;
 453                 }
 454                 *rdev = wiphy_to_dev(wiphy);
 455                 *wdev = NULL;
 456
 457                 list_for_each_entry(tmp, &(*rdev)->wdev_list, list) {
 458                         if (tmp->identifier == cb->args[1]) {
 459                                 *wdev = tmp;
 460                                 break;
 461                         }
 462                 }
 463
 464                 if (!*wdev) {
 465                         err = -ENODEV;
 466                         goto out_unlock;
 467                 }
 468         }
 469
 470         return 0;
 471  out_unlock:
 472         rtnl_unlock();
 473         return err;
 474 }
 475
 476 static void nl80211_finish_wdev_dump(struct cfg80211_registered_device *rdev)
 477 {
 478         rtnl_unlock();
 479 }
 480
 481 /* IE validation */
 482 static bool is_valid_ie_attr(const struct nlattr *attr)
 483 {
 484         const u8 *pos;
 485         int len;
 486
 487         if (!attr)
 488                 return true;
 489
 490         pos = nla_data(attr);
 491         len = nla_len(attr);
 492
 493         while (len) {
 494                 u8 elemlen;
 495
 496                 if (len < 2)
 497                         return false;
 498                 len -= 2;
 499
 500                 elemlen = pos[1];
 501                 if (elemlen > len)
 502                         return false;
 503
 504                 len -= elemlen;
 505                 pos += 2 + elemlen;
 506         }
 507
 508         return true;
 509 }
 510
 511 /* message building helper */
 512 static inline void *nl80211hdr_put(struct sk_buff *skb, u32 portid, u32 seq,
 513                                    int flags, u8 cmd)
 514 {
 515         /* since there is no private header just add the generic one */
 516         return genlmsg_put(skb, portid, seq, &nl80211_fam, flags, cmd);
 517 }
 518
 519 static int nl80211_msg_put_channel(struct sk_buff *msg,
 520                                    struct ieee80211_channel *chan,
 521                                    bool large)
 522 {
 523         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ,
 524                         chan->center_freq))
 525                 goto nla_put_failure;
 526
 527         if ((chan->flags & IEEE80211_CHAN_DISABLED) &&
 528             nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED))
 529                 goto nla_put_failure;
 530         if ((chan->flags & IEEE80211_CHAN_PASSIVE_SCAN) &&
 531             nla_put_flag(msg, NL80211_FREQUENCY_ATTR_PASSIVE_SCAN))
 532                 goto nla_put_failure;
 533         if ((chan->flags & IEEE80211_CHAN_NO_IBSS) &&
 534             nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IBSS))
 535                 goto nla_put_failure;
 536         if (chan->flags & IEEE80211_CHAN_RADAR) {
 537                 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR))
 538                         goto nla_put_failure;
 539                 if (large) {
 540                         u32 time;
 541
 542                         time = elapsed_jiffies_msecs(chan->dfs_state_entered);
 543
 544                         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_STATE,
 545                                         chan->dfs_state))
 546                                 goto nla_put_failure;
 547                         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_TIME,
 548                                         time))
 549                                 goto nla_put_failure;
 550                 }
 551         }
 552
 553         if (large) {
 554                 if ((chan->flags & IEEE80211_CHAN_NO_HT40MINUS) &&
 555                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_MINUS))
 556                         goto nla_put_failure;
 557                 if ((chan->flags & IEEE80211_CHAN_NO_HT40PLUS) &&
 558                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_PLUS))
 559                         goto nla_put_failure;
 560                 if ((chan->flags & IEEE80211_CHAN_NO_80MHZ) &&
 561                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_80MHZ))
 562                         goto nla_put_failure;
 563                 if ((chan->flags & IEEE80211_CHAN_NO_160MHZ) &&
 564                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_160MHZ))
 565                         goto nla_put_failure;
 566         }
 567
 568         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
 569                         DBM_TO_MBM(chan->max_power)))
 570                 goto nla_put_failure;
 571
 572         return 0;
 573
 574  nla_put_failure:
 575         return -ENOBUFS;
 576 }
 577
 578 /* netlink command implementations */
 579
 580 struct key_parse {
 581         struct key_params p;
 582         int idx;
 583         int type;
 584         bool def, defmgmt;
 585         bool def_uni, def_multi;
 586 };
 587
 588 static int nl80211_parse_key_new(struct nlattr *key, struct key_parse *k)
 589 {
 590         struct nlattr *tb[NL80211_KEY_MAX + 1];
 591         int err = nla_parse_nested(tb, NL80211_KEY_MAX, key,
 592                                    nl80211_key_policy);
 593         if (err)
 594                 return err;
 595
 596         k->def = !!tb[NL80211_KEY_DEFAULT];
 597         k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];
 598
 599         if (k->def) {
 600                 k->def_uni = true;
 601                 k->def_multi = true;
 602         }
 603         if (k->defmgmt)
 604                 k->def_multi = true;
 605
 606         if (tb[NL80211_KEY_IDX])
 607                 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);
 608
 609         if (tb[NL80211_KEY_DATA]) {
 610                 k->p.key = nla_data(tb[NL80211_KEY_DATA]);
 611                 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
 612         }
 613
 614         if (tb[NL80211_KEY_SEQ]) {
 615                 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
 616                 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
 617         }
 618
 619         if (tb[NL80211_KEY_CIPHER])
 620                 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);
 621
 622         if (tb[NL80211_KEY_TYPE]) {
 623                 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]);
 624                 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
 625                         return -EINVAL;
 626         }
 627
 628         if (tb[NL80211_KEY_DEFAULT_TYPES]) {
 629                 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
 630                 err = nla_parse_nested(kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
 631                                        tb[NL80211_KEY_DEFAULT_TYPES],
 632                                        nl80211_key_default_policy);
 633                 if (err)
 634                         return err;
 635
 636                 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
 637                 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
 638         }
 639
 640         return 0;
 641 }
 642
 643 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k)
 644 {
 645         if (info->attrs[NL80211_ATTR_KEY_DATA]) {
 646                 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
 647                 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
 648         }
 649
 650         if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
 651                 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
 652                 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
 653         }
 654
 655         if (info->attrs[NL80211_ATTR_KEY_IDX])
 656                 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
 657
 658         if (info->attrs[NL80211_ATTR_KEY_CIPHER])
 659                 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
 660
 661         k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
 662         k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT];
 663
 664         if (k->def) {
 665                 k->def_uni = true;
 666                 k->def_multi = true;
 667         }
 668         if (k->defmgmt)
 669                 k->def_multi = true;
 670
 671         if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
 672                 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
 673                 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
 674                         return -EINVAL;
 675         }
 676
 677         if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) {
 678                 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
 679                 int err = nla_parse_nested(
 680                                 kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
 681                                 info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES],
 682                                 nl80211_key_default_policy);
 683                 if (err)
 684                         return err;
 685
 686                 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
 687                 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
 688         }
 689
 690         return 0;
 691 }
 692
 693 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
 694 {
 695         int err;
 696
 697         memset(k, 0, sizeof(*k));
 698         k->idx = -1;
 699         k->type = -1;
 700
 701         if (info->attrs[NL80211_ATTR_KEY])
 702                 err = nl80211_parse_key_new(info->attrs[NL80211_ATTR_KEY], k);
 703         else
 704                 err = nl80211_parse_key_old(info, k);
 705
 706         if (err)
 707                 return err;
 708
 709         if (k->def && k->defmgmt)
 710                 return -EINVAL;
 711
 712         if (k->defmgmt) {
 713                 if (k->def_uni || !k->def_multi)
 714                         return -EINVAL;
 715         }
 716
 717         if (k->idx != -1) {
 718                 if (k->defmgmt) {
 719                         if (k->idx < 4 || k->idx > 5)
 720                                 return -EINVAL;
 721                 } else if (k->def) {
 722                         if (k->idx < 0 || k->idx > 3)
 723                                 return -EINVAL;
 724                 } else {
 725                         if (k->idx < 0 || k->idx > 5)
 726                                 return -EINVAL;
 727                 }
 728         }
 729
 730         return 0;
 731 }
 732
 733 static struct cfg80211_cached_keys *
 734 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
 735                        struct nlattr *keys, bool *no_ht)
 736 {
 737         struct key_parse parse;
 738         struct nlattr *key;
 739         struct cfg80211_cached_keys *result;
 740         int rem, err, def = 0;
 741
 742         result = kzalloc(sizeof(*result), GFP_KERNEL);
 743         if (!result)
 744                 return ERR_PTR(-ENOMEM);
 745
 746         result->def = -1;
 747         result->defmgmt = -1;
 748
 749         nla_for_each_nested(key, keys, rem) {
 750                 memset(&parse, 0, sizeof(parse));
 751                 parse.idx = -1;
 752
 753                 err = nl80211_parse_key_new(key, &parse);
 754                 if (err)
 755                         goto error;
 756                 err = -EINVAL;
 757                 if (!parse.p.key)
 758                         goto error;
 759                 if (parse.idx < 0 || parse.idx > 4)
 760                         goto error;
 761                 if (parse.def) {
 762                         if (def)
 763                                 goto error;
 764                         def = 1;
 765                         result->def = parse.idx;
 766                         if (!parse.def_uni || !parse.def_multi)
 767                                 goto error;
 768                 } else if (parse.defmgmt)
 769                         goto error;
 770                 err = cfg80211_validate_key_settings(rdev, &parse.p,
 771                                                      parse.idx, false, NULL);
 772                 if (err)
 773                         goto error;
 774                 result->params[parse.idx].cipher = parse.p.cipher;
 775                 result->params[parse.idx].key_len = parse.p.key_len;
 776                 result->params[parse.idx].key = result->data[parse.idx];
 777                 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
 778
 779                 if (parse.p.cipher == WLAN_CIPHER_SUITE_WEP40 ||
 780                     parse.p.cipher == WLAN_CIPHER_SUITE_WEP104) {
 781                         if (no_ht)
 782                                 *no_ht = true;
 783                 }
 784         }
 785
 786         return result;
 787  error:
 788         kfree(result);
 789         return ERR_PTR(err);
 790 }
 791
 792 static int nl80211_key_allowed(struct wireless_dev *wdev)
 793 {
 794         ASSERT_WDEV_LOCK(wdev);
 795
 796         switch (wdev->iftype) {
 797         case NL80211_IFTYPE_AP:
 798         case NL80211_IFTYPE_AP_VLAN:
 799         case NL80211_IFTYPE_P2P_GO:
 800         case NL80211_IFTYPE_MESH_POINT:
 801                 break;
 802         case NL80211_IFTYPE_ADHOC:
 803         case NL80211_IFTYPE_STATION:
 804         case NL80211_IFTYPE_P2P_CLIENT:
 805                 if (!wdev->current_bss)
 806                         return -ENOLINK;
 807                 break;
 808         default:
 809                 return -EINVAL;
 810         }
 811
 812         return 0;
 813 }
 814
 815 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes)
 816 {
 817         struct nlattr *nl_modes = nla_nest_start(msg, attr);
 818         int i;
 819
 820         if (!nl_modes)
 821                 goto nla_put_failure;
 822
 823         i = 0;
 824         while (ifmodes) {
 825                 if ((ifmodes & 1) && nla_put_flag(msg, i))
 826                         goto nla_put_failure;
 827                 ifmodes >>= 1;
 828                 i++;
 829         }
 830
 831         nla_nest_end(msg, nl_modes);
 832         return 0;
 833
 834 nla_put_failure:
 835         return -ENOBUFS;
 836 }
 837
 838 static int nl80211_put_iface_combinations(struct wiphy *wiphy,
 839                                           struct sk_buff *msg,
 840                                           bool large)
 841 {
 842         struct nlattr *nl_combis;
 843         int i, j;
 844
 845         nl_combis = nla_nest_start(msg,
 846                                 NL80211_ATTR_INTERFACE_COMBINATIONS);
 847         if (!nl_combis)
 848                 goto nla_put_failure;
 849
 850         for (i = 0; i < wiphy->n_iface_combinations; i++) {
 851                 const struct ieee80211_iface_combination *c;
 852                 struct nlattr *nl_combi, *nl_limits;
 853
 854                 c = &wiphy->iface_combinations[i];
 855
 856                 nl_combi = nla_nest_start(msg, i + 1);
 857                 if (!nl_combi)
 858                         goto nla_put_failure;
 859
 860                 nl_limits = nla_nest_start(msg, NL80211_IFACE_COMB_LIMITS);
 861                 if (!nl_limits)
 862                         goto nla_put_failure;
 863
 864                 for (j = 0; j < c->n_limits; j++) {
 865                         struct nlattr *nl_limit;
 866
 867                         nl_limit = nla_nest_start(msg, j + 1);
 868                         if (!nl_limit)
 869                                 goto nla_put_failure;
 870                         if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX,
 871                                         c->limits[j].max))
 872                                 goto nla_put_failure;
 873                         if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES,
 874                                                 c->limits[j].types))
 875                                 goto nla_put_failure;
 876                         nla_nest_end(msg, nl_limit);
 877                 }
 878
 879                 nla_nest_end(msg, nl_limits);
 880
 881                 if (c->beacon_int_infra_match &&
 882                     nla_put_flag(msg, NL80211_IFACE_COMB_STA_AP_BI_MATCH))
 883                         goto nla_put_failure;
 884                 if (nla_put_u32(msg, NL80211_IFACE_COMB_NUM_CHANNELS,
 885                                 c->num_different_channels) ||
 886                     nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM,
 887                                 c->max_interfaces))
 888                         goto nla_put_failure;
 889                 if (large &&
 890                     nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS,
 891                                 c->radar_detect_widths))
 892                         goto nla_put_failure;
 893
 894                 nla_nest_end(msg, nl_combi);
 895         }
 896
 897         nla_nest_end(msg, nl_combis);
 898
 899         return 0;
 900 nla_put_failure:
 901         return -ENOBUFS;
 902 }
 903
 904 #ifdef CONFIG_PM
 905 static int nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device *rdev,
 906                                         struct sk_buff *msg)
 907 {
 908         const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan->tcp;
 909         struct nlattr *nl_tcp;
 910
 911         if (!tcp)
 912                 return 0;
 913
 914         nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
 915         if (!nl_tcp)
 916                 return -ENOBUFS;
 917
 918         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
 919                         tcp->data_payload_max))
 920                 return -ENOBUFS;
 921
 922         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
 923                         tcp->data_payload_max))
 924                 return -ENOBUFS;
 925
 926         if (tcp->seq && nla_put_flag(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ))
 927                 return -ENOBUFS;
 928
 929         if (tcp->tok && nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
 930                                 sizeof(*tcp->tok), tcp->tok))
 931                 return -ENOBUFS;
 932
 933         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
 934                         tcp->data_interval_max))
 935                 return -ENOBUFS;
 936
 937         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
 938                         tcp->wake_payload_max))
 939                 return -ENOBUFS;
 940
 941         nla_nest_end(msg, nl_tcp);
 942         return 0;
 943 }
 944
 945 static int nl80211_send_wowlan(struct sk_buff *msg,
 946                                struct cfg80211_registered_device *dev,
 947                                bool large)
 948 {
 949         struct nlattr *nl_wowlan;
 950
 951         if (!dev->wiphy.wowlan)
 952                 return 0;
 953
 954         nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED);
 955         if (!nl_wowlan)
 956                 return -ENOBUFS;
 957
 958         if (((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_ANY) &&
 959              nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
 960             ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_DISCONNECT) &&
 961              nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
 962             ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT) &&
 963              nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
 964             ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) &&
 965              nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) ||
 966             ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) &&
 967              nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
 968             ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) &&
 969              nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
 970             ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) &&
 971              nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
 972             ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE) &&
 973              nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
 974                 return -ENOBUFS;
 975
 976         if (dev->wiphy.wowlan->n_patterns) {
 977                 struct nl80211_wowlan_pattern_support pat = {
 978                         .max_patterns = dev->wiphy.wowlan->n_patterns,
 979                         .min_pattern_len = dev->wiphy.wowlan->pattern_min_len,
 980                         .max_pattern_len = dev->wiphy.wowlan->pattern_max_len,
 981                         .max_pkt_offset = dev->wiphy.wowlan->max_pkt_offset,
 982                 };
 983
 984                 if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
 985                             sizeof(pat), &pat))
 986                         return -ENOBUFS;
 987         }
 988
 989         if (large && nl80211_send_wowlan_tcp_caps(dev, msg))
 990                 return -ENOBUFS;
 991
 992         nla_nest_end(msg, nl_wowlan);
 993
 994         return 0;
 995 }
 996 #endif
 997
 998 static int nl80211_send_band_rateinfo(struct sk_buff *msg,
 999                                       struct ieee80211_supported_band *sband)
1000 {
1001         struct nlattr *nl_rates, *nl_rate;
1002         struct ieee80211_rate *rate;
1003         int i;
1004
1005         /* add HT info */
1006         if (sband->ht_cap.ht_supported &&
1007             (nla_put(msg, NL80211_BAND_ATTR_HT_MCS_SET,
1008                      sizeof(sband->ht_cap.mcs),
1009                      &sband->ht_cap.mcs) ||
1010              nla_put_u16(msg, NL80211_BAND_ATTR_HT_CAPA,
1011                          sband->ht_cap.cap) ||
1012              nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
1013                         sband->ht_cap.ampdu_factor) ||
1014              nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
1015                         sband->ht_cap.ampdu_density)))
1016                 return -ENOBUFS;
1017
1018         /* add VHT info */
1019         if (sband->vht_cap.vht_supported &&
1020             (nla_put(msg, NL80211_BAND_ATTR_VHT_MCS_SET,
1021                      sizeof(sband->vht_cap.vht_mcs),
1022                      &sband->vht_cap.vht_mcs) ||
1023              nla_put_u32(msg, NL80211_BAND_ATTR_VHT_CAPA,
1024                          sband->vht_cap.cap)))
1025                 return -ENOBUFS;
1026
1027         /* add bitrates */
1028         nl_rates = nla_nest_start(msg, NL80211_BAND_ATTR_RATES);
1029         if (!nl_rates)
1030                 return -ENOBUFS;
1031
1032         for (i = 0; i < sband->n_bitrates; i++) {
1033                 nl_rate = nla_nest_start(msg, i);
1034                 if (!nl_rate)
1035                         return -ENOBUFS;
1036
1037                 rate = &sband->bitrates[i];
1038                 if (nla_put_u32(msg, NL80211_BITRATE_ATTR_RATE,
1039                                 rate->bitrate))
1040                         return -ENOBUFS;
1041                 if ((rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) &&
1042                     nla_put_flag(msg,
1043                                  NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE))
1044                         return -ENOBUFS;
1045
1046                 nla_nest_end(msg, nl_rate);
1047         }
1048
1049         nla_nest_end(msg, nl_rates);
1050
1051         return 0;
1052 }
1053
1054 static int
1055 nl80211_send_mgmt_stypes(struct sk_buff *msg,
1056                          const struct ieee80211_txrx_stypes *mgmt_stypes)
1057 {
1058         u16 stypes;
1059         struct nlattr *nl_ftypes, *nl_ifs;
1060         enum nl80211_iftype ift;
1061         int i;
1062
1063         if (!mgmt_stypes)
1064                 return 0;
1065
1066         nl_ifs = nla_nest_start(msg, NL80211_ATTR_TX_FRAME_TYPES);
1067         if (!nl_ifs)
1068                 return -ENOBUFS;
1069
1070         for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1071                 nl_ftypes = nla_nest_start(msg, ift);
1072                 if (!nl_ftypes)
1073                         return -ENOBUFS;
1074                 i = 0;
1075                 stypes = mgmt_stypes[ift].tx;
1076                 while (stypes) {
1077                         if ((stypes & 1) &&
1078                             nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1079                                         (i << 4) | IEEE80211_FTYPE_MGMT))
1080                                 return -ENOBUFS;
1081                         stypes >>= 1;
1082                         i++;
1083                 }
1084                 nla_nest_end(msg, nl_ftypes);
1085         }
1086
1087         nla_nest_end(msg, nl_ifs);
1088
1089         nl_ifs = nla_nest_start(msg, NL80211_ATTR_RX_FRAME_TYPES);
1090         if (!nl_ifs)
1091                 return -ENOBUFS;
1092
1093         for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1094                 nl_ftypes = nla_nest_start(msg, ift);
1095                 if (!nl_ftypes)
1096                         return -ENOBUFS;
1097                 i = 0;
1098                 stypes = mgmt_stypes[ift].rx;
1099                 while (stypes) {
1100                         if ((stypes & 1) &&
1101                             nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1102                                         (i << 4) | IEEE80211_FTYPE_MGMT))
1103                                 return -ENOBUFS;
1104                         stypes >>= 1;
1105                         i++;
1106                 }
1107                 nla_nest_end(msg, nl_ftypes);
1108         }
1109         nla_nest_end(msg, nl_ifs);
1110
1111         return 0;
1112 }
1113
1114 struct nl80211_dump_wiphy_state {
1115         s64 filter_wiphy;
1116         long start;
1117         long split_start, band_start, chan_start;
1118         bool split;
1119 };
1120
1121 static int nl80211_send_wiphy(struct cfg80211_registered_device *dev,
1122                               struct sk_buff *msg, u32 portid, u32 seq,
1123                               int flags, struct nl80211_dump_wiphy_state *state)
1124 {
1125         void *hdr;
1126         struct nlattr *nl_bands, *nl_band;
1127         struct nlattr *nl_freqs, *nl_freq;
1128         struct nlattr *nl_cmds;
1129         enum ieee80211_band band;
1130         struct ieee80211_channel *chan;
1131         int i;
1132         const struct ieee80211_txrx_stypes *mgmt_stypes =
1133                                 dev->wiphy.mgmt_stypes;
1134         u32 features;
1135
1136         hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_WIPHY);
1137         if (!hdr)
1138                 return -ENOBUFS;
1139
1140         if (WARN_ON(!state))
1141                 return -EINVAL;
1142
1143         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, dev->wiphy_idx) ||
1144             nla_put_string(msg, NL80211_ATTR_WIPHY_NAME,
1145                            wiphy_name(&dev->wiphy)) ||
1146             nla_put_u32(msg, NL80211_ATTR_GENERATION,
1147                         cfg80211_rdev_list_generation))
1148                 goto nla_put_failure;
1149
1150         switch (state->split_start) {
1151         case 0:
1152                 if (nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
1153                                dev->wiphy.retry_short) ||
1154                     nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
1155                                dev->wiphy.retry_long) ||
1156                     nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
1157                                 dev->wiphy.frag_threshold) ||
1158                     nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
1159                                 dev->wiphy.rts_threshold) ||
1160                     nla_put_u8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
1161                                dev->wiphy.coverage_class) ||
1162                     nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
1163                                dev->wiphy.max_scan_ssids) ||
1164                     nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS,
1165                                dev->wiphy.max_sched_scan_ssids) ||
1166                     nla_put_u16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
1167                                 dev->wiphy.max_scan_ie_len) ||
1168                     nla_put_u16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN,
1169                                 dev->wiphy.max_sched_scan_ie_len) ||
1170                     nla_put_u8(msg, NL80211_ATTR_MAX_MATCH_SETS,
1171                                dev->wiphy.max_match_sets))
1172                         goto nla_put_failure;
1173
1174                 if ((dev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) &&
1175                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_IBSS_RSN))
1176                         goto nla_put_failure;
1177                 if ((dev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) &&
1178                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_MESH_AUTH))
1179                         goto nla_put_failure;
1180                 if ((dev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
1181                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_AP_UAPSD))
1182                         goto nla_put_failure;
1183                 if ((dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) &&
1184                     nla_put_flag(msg, NL80211_ATTR_ROAM_SUPPORT))
1185                         goto nla_put_failure;
1186                 if ((dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) &&
1187                     nla_put_flag(msg, NL80211_ATTR_TDLS_SUPPORT))
1188                         goto nla_put_failure;
1189                 if ((dev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) &&
1190                     nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP))
1191                         goto nla_put_failure;
1192                 if ((dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ) &&
1193                     nla_put_flag(msg, WIPHY_FLAG_SUPPORTS_5_10_MHZ))
1194                         goto nla_put_failure;
1195
1196                 state->split_start++;
1197                 if (state->split)
1198                         break;
1199         case 1:
1200                 if (nla_put(msg, NL80211_ATTR_CIPHER_SUITES,
1201                             sizeof(u32) * dev->wiphy.n_cipher_suites,
1202                             dev->wiphy.cipher_suites))
1203                         goto nla_put_failure;
1204
1205                 if (nla_put_u8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
1206                                dev->wiphy.max_num_pmkids))
1207                         goto nla_put_failure;
1208
1209                 if ((dev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
1210                     nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE))
1211                         goto nla_put_failure;
1212
1213                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX,
1214                                 dev->wiphy.available_antennas_tx) ||
1215                     nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX,
1216                                 dev->wiphy.available_antennas_rx))
1217                         goto nla_put_failure;
1218
1219                 if ((dev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) &&
1220                     nla_put_u32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD,
1221                                 dev->wiphy.probe_resp_offload))
1222                         goto nla_put_failure;
1223
1224                 if ((dev->wiphy.available_antennas_tx ||
1225                      dev->wiphy.available_antennas_rx) &&
1226                     dev->ops->get_antenna) {
1227                         u32 tx_ant = 0, rx_ant = 0;
1228                         int res;
1229                         res = rdev_get_antenna(dev, &tx_ant, &rx_ant);
1230                         if (!res) {
1231                                 if (nla_put_u32(msg,
1232                                                 NL80211_ATTR_WIPHY_ANTENNA_TX,
1233                                                 tx_ant) ||
1234                                     nla_put_u32(msg,
1235                                                 NL80211_ATTR_WIPHY_ANTENNA_RX,
1236                                                 rx_ant))
1237                                         goto nla_put_failure;
1238                         }
1239                 }
1240
1241                 state->split_start++;
1242                 if (state->split)
1243                         break;
1244         case 2:
1245                 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES,
1246                                         dev->wiphy.interface_modes))
1247                                 goto nla_put_failure;
1248                 state->split_start++;
1249                 if (state->split)
1250                         break;
1251         case 3:
1252                 nl_bands = nla_nest_start(msg, NL80211_ATTR_WIPHY_BANDS);
1253                 if (!nl_bands)
1254                         goto nla_put_failure;
1255
1256                 for (band = state->band_start;
1257                      band < IEEE80211_NUM_BANDS; band++) {
1258                         struct ieee80211_supported_band *sband;
1259
1260                         sband = dev->wiphy.bands[band];
1261
1262                         if (!sband)
1263                                 continue;
1264
1265                         nl_band = nla_nest_start(msg, band);
1266                         if (!nl_band)
1267                                 goto nla_put_failure;
1268
1269                         switch (state->chan_start) {
1270                         case 0:
1271                                 if (nl80211_send_band_rateinfo(msg, sband))
1272                                         goto nla_put_failure;
1273                                 state->chan_start++;
1274                                 if (state->split)
1275                                         break;
1276                         default:
1277                                 /* add frequencies */
1278                                 nl_freqs = nla_nest_start(
1279                                         msg, NL80211_BAND_ATTR_FREQS);
1280                                 if (!nl_freqs)
1281                                         goto nla_put_failure;
1282
1283                                 for (i = state->chan_start - 1;
1284                                      i < sband->n_channels;
1285                                      i++) {
1286                                         nl_freq = nla_nest_start(msg, i);
1287                                         if (!nl_freq)
1288                                                 goto nla_put_failure;
1289
1290                                         chan = &sband->channels[i];
1291
1292                                         if (nl80211_msg_put_channel(
1293                                                         msg, chan,
1294                                                         state->split))
1295                                                 goto nla_put_failure;
1296
1297                                         nla_nest_end(msg, nl_freq);
1298                                         if (state->split)
1299                                                 break;
1300                                 }
1301                                 if (i < sband->n_channels)
1302                                         state->chan_start = i + 2;
1303                                 else
1304                                         state->chan_start = 0;
1305                                 nla_nest_end(msg, nl_freqs);
1306                         }
1307
1308                         nla_nest_end(msg, nl_band);
1309
1310                         if (state->split) {
1311                                 /* start again here */
1312                                 if (state->chan_start)
1313                                         band--;
1314                                 break;
1315                         }
1316                 }
1317                 nla_nest_end(msg, nl_bands);
1318
1319                 if (band < IEEE80211_NUM_BANDS)
1320                         state->band_start = band + 1;
1321                 else
1322                         state->band_start = 0;
1323
1324                 /* if bands & channels are done, continue outside */
1325                 if (state->band_start == 0 && state->chan_start == 0)
1326                         state->split_start++;
1327                 if (state->split)
1328                         break;
1329         case 4:
1330                 nl_cmds = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_COMMANDS);
1331                 if (!nl_cmds)
1332                         goto nla_put_failure;
1333
1334                 i = 0;
1335 #define CMD(op, n)                                                      \
1336                  do {                                                   \
1337                         if (dev->ops->op) {                             \
1338                                 i++;                                    \
1339                                 if (nla_put_u32(msg, i, NL80211_CMD_ ## n)) \
1340                                         goto nla_put_failure;           \
1341                         }                                               \
1342                 } while (0)
1343
1344                 CMD(add_virtual_intf, NEW_INTERFACE);
1345                 CMD(change_virtual_intf, SET_INTERFACE);
1346                 CMD(add_key, NEW_KEY);
1347                 CMD(start_ap, START_AP);
1348                 CMD(add_station, NEW_STATION);
1349                 CMD(add_mpath, NEW_MPATH);
1350                 CMD(update_mesh_config, SET_MESH_CONFIG);
1351                 CMD(change_bss, SET_BSS);
1352                 CMD(auth, AUTHENTICATE);
1353                 CMD(assoc, ASSOCIATE);
1354                 CMD(deauth, DEAUTHENTICATE);
1355                 CMD(disassoc, DISASSOCIATE);
1356                 CMD(join_ibss, JOIN_IBSS);
1357                 CMD(join_mesh, JOIN_MESH);
1358                 CMD(set_pmksa, SET_PMKSA);
1359                 CMD(del_pmksa, DEL_PMKSA);
1360                 CMD(flush_pmksa, FLUSH_PMKSA);
1361                 if (dev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)
1362                         CMD(remain_on_channel, REMAIN_ON_CHANNEL);
1363                 CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
1364                 CMD(mgmt_tx, FRAME);
1365                 CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL);
1366                 if (dev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
1367                         i++;
1368                         if (nla_put_u32(msg, i, NL80211_CMD_SET_WIPHY_NETNS))
1369                                 goto nla_put_failure;
1370                 }
1371                 if (dev->ops->set_monitor_channel || dev->ops->start_ap ||
1372                     dev->ops->join_mesh) {
1373                         i++;
1374                         if (nla_put_u32(msg, i, NL80211_CMD_SET_CHANNEL))
1375                                 goto nla_put_failure;
1376                 }
1377                 CMD(set_wds_peer, SET_WDS_PEER);
1378                 if (dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) {
1379                         CMD(tdls_mgmt, TDLS_MGMT);
1380                         CMD(tdls_oper, TDLS_OPER);
1381                 }
1382                 if (dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN)
1383                         CMD(sched_scan_start, START_SCHED_SCAN);
1384                 CMD(probe_client, PROBE_CLIENT);
1385                 CMD(set_noack_map, SET_NOACK_MAP);
1386                 if (dev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) {
1387                         i++;
1388                         if (nla_put_u32(msg, i, NL80211_CMD_REGISTER_BEACONS))
1389                                 goto nla_put_failure;
1390                 }
1391                 CMD(start_p2p_device, START_P2P_DEVICE);
1392                 CMD(set_mcast_rate, SET_MCAST_RATE);
1393                 if (state->split) {
1394                         CMD(crit_proto_start, CRIT_PROTOCOL_START);
1395                         CMD(crit_proto_stop, CRIT_PROTOCOL_STOP);
1396                 }
1397
1398 #ifdef CONFIG_NL80211_TESTMODE
1399                 CMD(testmode_cmd, TESTMODE);
1400 #endif
1401
1402 #undef CMD
1403
1404                 if (dev->ops->connect || dev->ops->auth) {
1405                         i++;
1406                         if (nla_put_u32(msg, i, NL80211_CMD_CONNECT))
1407                                 goto nla_put_failure;
1408                 }
1409
1410                 if (dev->ops->disconnect || dev->ops->deauth) {
1411                         i++;
1412                         if (nla_put_u32(msg, i, NL80211_CMD_DISCONNECT))
1413                                 goto nla_put_failure;
1414                 }
1415
1416                 nla_nest_end(msg, nl_cmds);
1417                 state->split_start++;
1418                 if (state->split)
1419                         break;
1420         case 5:
1421                 if (dev->ops->remain_on_channel &&
1422                     (dev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) &&
1423                     nla_put_u32(msg,
1424                                 NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
1425                                 dev->wiphy.max_remain_on_channel_duration))
1426                         goto nla_put_failure;
1427
1428                 if ((dev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) &&
1429                     nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK))
1430                         goto nla_put_failure;
1431
1432                 if (nl80211_send_mgmt_stypes(msg, mgmt_stypes))
1433                         goto nla_put_failure;
1434                 state->split_start++;
1435                 if (state->split)
1436                         break;
1437         case 6:
1438 #ifdef CONFIG_PM
1439                 if (nl80211_send_wowlan(msg, dev, state->split))
1440                         goto nla_put_failure;
1441                 state->split_start++;
1442                 if (state->split)
1443                         break;
1444 #else
1445                 state->split_start++;
1446 #endif
1447         case 7:
1448                 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES,
1449                                         dev->wiphy.software_iftypes))
1450                         goto nla_put_failure;
1451
1452                 if (nl80211_put_iface_combinations(&dev->wiphy, msg,
1453                                                    state->split))
1454                         goto nla_put_failure;
1455
1456                 state->split_start++;
1457                 if (state->split)
1458                         break;
1459         case 8:
1460                 if ((dev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) &&
1461                     nla_put_u32(msg, NL80211_ATTR_DEVICE_AP_SME,
1462                                 dev->wiphy.ap_sme_capa))
1463                         goto nla_put_failure;
1464
1465                 features = dev->wiphy.features;
1466                 /*
1467                  * We can only add the per-channel limit information if the
1468                  * dump is split, otherwise it makes it too big. Therefore
1469                  * only advertise it in that case.
1470                  */
1471                 if (state->split)
1472                         features |= NL80211_FEATURE_ADVERTISE_CHAN_LIMITS;
1473                 if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS, features))
1474                         goto nla_put_failure;
1475
1476                 if (dev->wiphy.ht_capa_mod_mask &&
1477                     nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK,
1478                             sizeof(*dev->wiphy.ht_capa_mod_mask),
1479                             dev->wiphy.ht_capa_mod_mask))
1480                         goto nla_put_failure;
1481
1482                 if (dev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME &&
1483                     dev->wiphy.max_acl_mac_addrs &&
1484                     nla_put_u32(msg, NL80211_ATTR_MAC_ACL_MAX,
1485                                 dev->wiphy.max_acl_mac_addrs))
1486                         goto nla_put_failure;
1487
1488                 /*
1489                  * Any information below this point is only available to
1490                  * applications that can deal with it being split. This
1491                  * helps ensure that newly added capabilities don't break
1492                  * older tools by overrunning their buffers.
1493                  *
1494                  * We still increment split_start so that in the split
1495                  * case we'll continue with more data in the next round,
1496                  * but break unconditionally so unsplit data stops here.
1497                  */
1498                 state->split_start++;
1499                 break;
1500         case 9:
1501                 if (dev->wiphy.extended_capabilities &&
1502                     (nla_put(msg, NL80211_ATTR_EXT_CAPA,
1503                              dev->wiphy.extended_capabilities_len,
1504                              dev->wiphy.extended_capabilities) ||
1505                      nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
1506                              dev->wiphy.extended_capabilities_len,
1507                              dev->wiphy.extended_capabilities_mask)))
1508                         goto nla_put_failure;
1509
1510                 if (dev->wiphy.vht_capa_mod_mask &&
1511                     nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK,
1512                             sizeof(*dev->wiphy.vht_capa_mod_mask),
1513                             dev->wiphy.vht_capa_mod_mask))
1514                         goto nla_put_failure;
1515
1516                 /* done */
1517                 state->split_start = 0;
1518                 break;
1519         }
1520         return genlmsg_end(msg, hdr);
1521
1522  nla_put_failure:
1523         genlmsg_cancel(msg, hdr);
1524         return -EMSGSIZE;
1525 }
1526
1527 static int nl80211_dump_wiphy_parse(struct sk_buff *skb,
1528                                     struct netlink_callback *cb,
1529                                     struct nl80211_dump_wiphy_state *state)
1530 {
1531         struct nlattr **tb = nl80211_fam.attrbuf;
1532         int ret = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
1533                               tb, nl80211_fam.maxattr, nl80211_policy);
1534         /* ignore parse errors for backward compatibility */
1535         if (ret)
1536                 return 0;
1537
1538         state->split = tb[NL80211_ATTR_SPLIT_WIPHY_DUMP];
1539         if (tb[NL80211_ATTR_WIPHY])
1540                 state->filter_wiphy = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
1541         if (tb[NL80211_ATTR_WDEV])
1542                 state->filter_wiphy = nla_get_u64(tb[NL80211_ATTR_WDEV]) >> 32;
1543         if (tb[NL80211_ATTR_IFINDEX]) {
1544                 struct net_device *netdev;
1545                 struct cfg80211_registered_device *rdev;
1546                 int ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
1547
1548                 netdev = dev_get_by_index(sock_net(skb->sk), ifidx);
1549                 if (!netdev)
1550                         return -ENODEV;
1551                 if (netdev->ieee80211_ptr) {
1552                         rdev = wiphy_to_dev(
1553                                 netdev->ieee80211_ptr->wiphy);
1554                         state->filter_wiphy = rdev->wiphy_idx;
1555                 }
1556                 dev_put(netdev);
1557         }
1558
1559         return 0;
1560 }
1561
1562 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
1563 {
1564         int idx = 0, ret;
1565         struct nl80211_dump_wiphy_state *state = (void *)cb->args[0];
1566         struct cfg80211_registered_device *dev;
1567
1568         rtnl_lock();
1569         if (!state) {
1570                 state = kzalloc(sizeof(*state), GFP_KERNEL);
1571                 if (!state) {
1572                         rtnl_unlock();
1573                         return -ENOMEM;
1574                 }
1575                 state->filter_wiphy = -1;
1576                 ret = nl80211_dump_wiphy_parse(skb, cb, state);
1577                 if (ret) {
1578                         kfree(state);
1579                         rtnl_unlock();
1580                         return ret;
1581                 }
1582                 cb->args[0] = (long)state;
1583         }
1584
1585         list_for_each_entry(dev, &cfg80211_rdev_list, list) {
1586                 if (!net_eq(wiphy_net(&dev->wiphy), sock_net(skb->sk)))
1587                         continue;
1588                 if (++idx <= state->start)
1589                         continue;
1590                 if (state->filter_wiphy != -1 &&
1591                     state->filter_wiphy != dev->wiphy_idx)
1592                         continue;
1593                 /* attempt to fit multiple wiphy data chunks into the skb */
1594                 do {
1595                         ret = nl80211_send_wiphy(dev, skb,
1596                                                  NETLINK_CB(cb->skb).portid,
1597                                                  cb->nlh->nlmsg_seq,
1598                                                  NLM_F_MULTI, state);
1599                         if (ret < 0) {
1600                                 /*
1601                                  * If sending the wiphy data didn't fit (ENOBUFS
1602                                  * or EMSGSIZE returned), this SKB is still
1603                                  * empty (so it's not too big because another
1604                                  * wiphy dataset is already in the skb) and
1605                                  * we've not tried to adjust the dump allocation
1606                                  * yet ... then adjust the alloc size to be
1607                                  * bigger, and return 1 but with the empty skb.
1608                                  * This results in an empty message being RX'ed
1609                                  * in userspace, but that is ignored.
1610                                  *
1611                                  * We can then retry with the larger buffer.
1612                                  */
1613                                 if ((ret == -ENOBUFS || ret == -EMSGSIZE) &&
1614                                     !skb->len &&
1615                                     cb->min_dump_alloc < 4096) {
1616                                         cb->min_dump_alloc = 4096;
1617                                         rtnl_unlock();
1618                                         return 1;
1619                                 }
1620                                 idx--;
1621                                 break;
1622                         }
1623                 } while (state->split_start > 0);
1624                 break;
1625         }
1626         rtnl_unlock();
1627
1628         state->start = idx;
1629
1630         return skb->len;
1631 }
1632
1633 static int nl80211_dump_wiphy_done(struct netlink_callback *cb)
1634 {
1635         kfree((void *)cb->args[0]);
1636         return 0;
1637 }
1638
1639 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
1640 {
1641         struct sk_buff *msg;
1642         struct cfg80211_registered_device *dev = info->user_ptr[0];
1643         struct nl80211_dump_wiphy_state state = {};
1644
1645         msg = nlmsg_new(4096, GFP_KERNEL);
1646         if (!msg)
1647                 return -ENOMEM;
1648
1649         if (nl80211_send_wiphy(dev, msg, info->snd_portid, info->snd_seq, 0,
1650                                &state) < 0) {
1651                 nlmsg_free(msg);
1652                 return -ENOBUFS;
1653         }
1654
1655         return genlmsg_reply(msg, info);
1656 }
1657
1658 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
1659         [NL80211_TXQ_ATTR_QUEUE]                = { .type = NLA_U8 },
1660         [NL80211_TXQ_ATTR_TXOP]                 = { .type = NLA_U16 },
1661         [NL80211_TXQ_ATTR_CWMIN]                = { .type = NLA_U16 },
1662         [NL80211_TXQ_ATTR_CWMAX]                = { .type = NLA_U16 },
1663         [NL80211_TXQ_ATTR_AIFS]                 = { .type = NLA_U8 },
1664 };
1665
1666 static int parse_txq_params(struct nlattr *tb[],
1667                             struct ieee80211_txq_params *txq_params)
1668 {
1669         if (!tb[NL80211_TXQ_ATTR_AC] || !tb[NL80211_TXQ_ATTR_TXOP] ||
1670             !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
1671             !tb[NL80211_TXQ_ATTR_AIFS])
1672                 return -EINVAL;
1673
1674         txq_params->ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]);
1675         txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
1676         txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
1677         txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
1678         txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
1679
1680         if (txq_params->ac >= NL80211_NUM_ACS)
1681                 return -EINVAL;
1682
1683         return 0;
1684 }
1685
1686 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
1687 {
1688         /*
1689          * You can only set the channel explicitly for WDS interfaces,
1690          * all others have their channel managed via their respective
1691          * "establish a connection" command (connect, join, ...)
1692          *
1693          * For AP/GO and mesh mode, the channel can be set with the
1694          * channel userspace API, but is only stored and passed to the
1695          * low-level driver when the AP starts or the mesh is joined.
1696          * This is for backward compatibility, userspace can also give
1697          * the channel in the start-ap or join-mesh commands instead.
1698          *
1699          * Monitors are special as they are normally slaved to
1700          * whatever else is going on, so they have their own special
1701          * operation to set the monitor channel if possible.
1702          */
1703         return !wdev ||
1704                 wdev->iftype == NL80211_IFTYPE_AP ||
1705                 wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
1706                 wdev->iftype == NL80211_IFTYPE_MONITOR ||
1707                 wdev->iftype == NL80211_IFTYPE_P2P_GO;
1708 }
1709
1710 static int nl80211_parse_chandef(struct cfg80211_registered_device *rdev,
1711                                  struct genl_info *info,
1712                                  struct cfg80211_chan_def *chandef)
1713 {
1714         u32 control_freq;
1715
1716         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
1717                 return -EINVAL;
1718
1719         control_freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
1720
1721         chandef->chan = ieee80211_get_channel(&rdev->wiphy, control_freq);
1722         chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
1723         chandef->center_freq1 = control_freq;
1724         chandef->center_freq2 = 0;
1725
1726         /* Primary channel not allowed */
1727         if (!chandef->chan || chandef->chan->flags & IEEE80211_CHAN_DISABLED)
1728                 return -EINVAL;
1729
1730         if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
1731                 enum nl80211_channel_type chantype;
1732
1733                 chantype = nla_get_u32(
1734                                 info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
1735
1736                 switch (chantype) {
1737                 case NL80211_CHAN_NO_HT:
1738                 case NL80211_CHAN_HT20:
1739                 case NL80211_CHAN_HT40PLUS:
1740                 case NL80211_CHAN_HT40MINUS:
1741                         cfg80211_chandef_create(chandef, chandef->chan,
1742                                                 chantype);
1743                         break;
1744                 default:
1745                         return -EINVAL;
1746                 }
1747         } else if (info->attrs[NL80211_ATTR_CHANNEL_WIDTH]) {
1748                 chandef->width =
1749                         nla_get_u32(info->attrs[NL80211_ATTR_CHANNEL_WIDTH]);
1750                 if (info->attrs[NL80211_ATTR_CENTER_FREQ1])
1751                         chandef->center_freq1 =
1752                                 nla_get_u32(
1753                                         info->attrs[NL80211_ATTR_CENTER_FREQ1]);
1754                 if (info->attrs[NL80211_ATTR_CENTER_FREQ2])
1755                         chandef->center_freq2 =
1756                                 nla_get_u32(
1757                                         info->attrs[NL80211_ATTR_CENTER_FREQ2]);
1758         }
1759
1760         if (!cfg80211_chandef_valid(chandef))
1761                 return -EINVAL;
1762
1763         if (!cfg80211_chandef_usable(&rdev->wiphy, chandef,
1764                                      IEEE80211_CHAN_DISABLED))
1765                 return -EINVAL;
1766
1767         if ((chandef->width == NL80211_CHAN_WIDTH_5 ||
1768              chandef->width == NL80211_CHAN_WIDTH_10) &&
1769             !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ))
1770                 return -EINVAL;
1771
1772         return 0;
1773 }
1774
1775 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
1776                                  struct wireless_dev *wdev,
1777                                  struct genl_info *info)
1778 {
1779         struct cfg80211_chan_def chandef;
1780         int result;
1781         enum nl80211_iftype iftype = NL80211_IFTYPE_MONITOR;
1782
1783         if (wdev)
1784                 iftype = wdev->iftype;
1785
1786         if (!nl80211_can_set_dev_channel(wdev))
1787                 return -EOPNOTSUPP;
1788
1789         result = nl80211_parse_chandef(rdev, info, &chandef);
1790         if (result)
1791                 return result;
1792
1793         switch (iftype) {
1794         case NL80211_IFTYPE_AP:
1795         case NL80211_IFTYPE_P2P_GO:
1796                 if (wdev->beacon_interval) {
1797                         result = -EBUSY;
1798                         break;
1799                 }
1800                 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &chandef)) {
1801                         result = -EINVAL;
1802                         break;
1803                 }
1804                 wdev->preset_chandef = chandef;
1805                 result = 0;
1806                 break;
1807         case NL80211_IFTYPE_MESH_POINT:
1808                 result = cfg80211_set_mesh_channel(rdev, wdev, &chandef);
1809                 break;
1810         case NL80211_IFTYPE_MONITOR:
1811                 result = cfg80211_set_monitor_channel(rdev, &chandef);
1812                 break;
1813         default:
1814                 result = -EINVAL;
1815         }
1816
1817         return result;
1818 }
1819
1820 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
1821 {
1822         struct cfg80211_registered_device *rdev = info->user_ptr[0];
1823         struct net_device *netdev = info->user_ptr[1];
1824
1825         return __nl80211_set_channel(rdev, netdev->ieee80211_ptr, info);
1826 }
1827
1828 static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info)
1829 {
1830         struct cfg80211_registered_device *rdev = info->user_ptr[0];
1831         struct net_device *dev = info->user_ptr[1];
1832         struct wireless_dev *wdev = dev->ieee80211_ptr;
1833         const u8 *bssid;
1834
1835         if (!info->attrs[NL80211_ATTR_MAC])
1836                 return -EINVAL;
1837
1838         if (netif_running(dev))
1839                 return -EBUSY;
1840
1841         if (!rdev->ops->set_wds_peer)
1842                 return -EOPNOTSUPP;
1843
1844         if (wdev->iftype != NL80211_IFTYPE_WDS)
1845                 return -EOPNOTSUPP;
1846
1847         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
1848         return rdev_set_wds_peer(rdev, dev, bssid);
1849 }
1850
1851
1852 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
1853 {
1854         struct cfg80211_registered_device *rdev;
1855         struct net_device *netdev = NULL;
1856         struct wireless_dev *wdev;
1857         int result = 0, rem_txq_params = 0;
1858         struct nlattr *nl_txq_params;
1859         u32 changed;
1860         u8 retry_short = 0, retry_long = 0;
1861         u32 frag_threshold = 0, rts_threshold = 0;
1862         u8 coverage_class = 0;
1863
1864         ASSERT_RTNL();
1865
1866         /*
1867          * Try to find the wiphy and netdev. Normally this
1868          * function shouldn't need the netdev, but this is
1869          * done for backward compatibility -- previously
1870          * setting the channel was done per wiphy, but now
1871          * it is per netdev. Previous userland like hostapd
1872          * also passed a netdev to set_wiphy, so that it is
1873          * possible to let that go to the right netdev!
1874          */
1875
1876         if (info->attrs[NL80211_ATTR_IFINDEX]) {
1877                 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
1878
1879                 netdev = dev_get_by_index(genl_info_net(info), ifindex);
1880                 if (netdev && netdev->ieee80211_ptr)
1881                         rdev = wiphy_to_dev(netdev->ieee80211_ptr->wiphy);
1882                 else
1883                         netdev = NULL;
1884         }
1885
1886         if (!netdev) {
1887                 rdev = __cfg80211_rdev_from_attrs(genl_info_net(info),
1888                                                   info->attrs);
1889                 if (IS_ERR(rdev))
1890                         return PTR_ERR(rdev);
1891                 wdev = NULL;
1892                 netdev = NULL;
1893                 result = 0;
1894         } else
1895                 wdev = netdev->ieee80211_ptr;
1896
1897         /*
1898          * end workaround code, by now the rdev is available
1899          * and locked, and wdev may or may not be NULL.
1900          */
1901
1902         if (info->attrs[NL80211_ATTR_WIPHY_NAME])
1903                 result = cfg80211_dev_rename(
1904                         rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
1905
1906         if (result)
1907                 goto bad_res;
1908
1909         if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
1910                 struct ieee80211_txq_params txq_params;
1911                 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
1912
1913                 if (!rdev->ops->set_txq_params) {
1914                         result = -EOPNOTSUPP;
1915                         goto bad_res;
1916                 }
1917
1918                 if (!netdev) {
1919                         result = -EINVAL;
1920                         goto bad_res;
1921                 }
1922
1923                 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
1924                     netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
1925                         result = -EINVAL;
1926                         goto bad_res;
1927                 }
1928
1929                 if (!netif_running(netdev)) {
1930                         result = -ENETDOWN;
1931                         goto bad_res;
1932                 }
1933
1934                 nla_for_each_nested(nl_txq_params,
1935                                     info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
1936                                     rem_txq_params) {
1937                         nla_parse(tb, NL80211_TXQ_ATTR_MAX,
1938                                   nla_data(nl_txq_params),
1939                                   nla_len(nl_txq_params),
1940                                   txq_params_policy);
1941                         result = parse_txq_params(tb, &txq_params);
1942                         if (result)
1943                                 goto bad_res;
1944
1945                         result = rdev_set_txq_params(rdev, netdev,
1946                                                      &txq_params);
1947                         if (result)
1948                                 goto bad_res;
1949                 }
1950         }
1951
1952         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
1953                 result = __nl80211_set_channel(rdev,
1954                                 nl80211_can_set_dev_channel(wdev) ? wdev : NULL,
1955                                 info);
1956                 if (result)
1957                         goto bad_res;
1958         }
1959
1960         if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
1961                 struct wireless_dev *txp_wdev = wdev;
1962                 enum nl80211_tx_power_setting type;
1963                 int idx, mbm = 0;
1964
1965                 if (!(rdev->wiphy.features & NL80211_FEATURE_VIF_TXPOWER))
1966                         txp_wdev = NULL;
1967
1968                 if (!rdev->ops->set_tx_power) {
1969                         result = -EOPNOTSUPP;
1970                         goto bad_res;
1971                 }
1972
1973                 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
1974                 type = nla_get_u32(info->attrs[idx]);
1975
1976                 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
1977                     (type != NL80211_TX_POWER_AUTOMATIC)) {
1978                         result = -EINVAL;
1979                         goto bad_res;
1980                 }
1981
1982                 if (type != NL80211_TX_POWER_AUTOMATIC) {
1983                         idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
1984                         mbm = nla_get_u32(info->attrs[idx]);
1985                 }
1986
1987                 result = rdev_set_tx_power(rdev, txp_wdev, type, mbm);
1988                 if (result)
1989                         goto bad_res;
1990         }
1991
1992         if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
1993             info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
1994                 u32 tx_ant, rx_ant;
1995                 if ((!rdev->wiphy.available_antennas_tx &&
1996                      !rdev->wiphy.available_antennas_rx) ||
1997                     !rdev->ops->set_antenna) {
1998                         result = -EOPNOTSUPP;
1999                         goto bad_res;
2000                 }
2001
2002                 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
2003                 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
2004
2005                 /* reject antenna configurations which don't match the
2006                  * available antenna masks, except for the "all" mask */
2007                 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) ||
2008                     (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx))) {
2009                         result = -EINVAL;
2010                         goto bad_res;
2011                 }
2012
2013                 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx;
2014                 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx;
2015
2016                 result = rdev_set_antenna(rdev, tx_ant, rx_ant);
2017                 if (result)
2018                         goto bad_res;
2019         }
2020
2021         changed = 0;
2022
2023         if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
2024                 retry_short = nla_get_u8(
2025                         info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
2026                 if (retry_short == 0) {
2027                         result = -EINVAL;
2028                         goto bad_res;
2029                 }
2030                 changed |= WIPHY_PARAM_RETRY_SHORT;
2031         }
2032
2033         if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
2034                 retry_long = nla_get_u8(
2035                         info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
2036                 if (retry_long == 0) {
2037                         result = -EINVAL;
2038                         goto bad_res;
2039                 }
2040                 changed |= WIPHY_PARAM_RETRY_LONG;
2041         }
2042
2043         if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
2044                 frag_threshold = nla_get_u32(
2045                         info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
2046                 if (frag_threshold < 256) {
2047                         result = -EINVAL;
2048                         goto bad_res;
2049                 }
2050                 if (frag_threshold != (u32) -1) {
2051                         /*
2052                          * Fragments (apart from the last one) are required to
2053                          * have even length. Make the fragmentation code
2054                          * simpler by stripping LSB should someone try to use
2055                          * odd threshold value.
2056                          */
2057                         frag_threshold &= ~0x1;
2058                 }
2059                 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
2060         }
2061
2062         if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
2063                 rts_threshold = nla_get_u32(
2064                         info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
2065                 changed |= WIPHY_PARAM_RTS_THRESHOLD;
2066         }
2067
2068         if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
2069                 coverage_class = nla_get_u8(
2070                         info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
2071                 changed |= WIPHY_PARAM_COVERAGE_CLASS;
2072         }
2073
2074         if (changed) {
2075                 u8 old_retry_short, old_retry_long;
2076                 u32 old_frag_threshold, old_rts_threshold;
2077                 u8 old_coverage_class;
2078
2079                 if (!rdev->ops->set_wiphy_params) {
2080                         result = -EOPNOTSUPP;
2081                         goto bad_res;
2082                 }
2083
2084                 old_retry_short = rdev->wiphy.retry_short;
2085                 old_retry_long = rdev->wiphy.retry_long;
2086                 old_frag_threshold = rdev->wiphy.frag_threshold;
2087                 old_rts_threshold = rdev->wiphy.rts_threshold;
2088                 old_coverage_class = rdev->wiphy.coverage_class;
2089
2090                 if (changed & WIPHY_PARAM_RETRY_SHORT)
2091                         rdev->wiphy.retry_short = retry_short;
2092                 if (changed & WIPHY_PARAM_RETRY_LONG)
2093                         rdev->wiphy.retry_long = retry_long;
2094                 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
2095                         rdev->wiphy.frag_threshold = frag_threshold;
2096                 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
2097                         rdev->wiphy.rts_threshold = rts_threshold;
2098                 if (changed & WIPHY_PARAM_COVERAGE_CLASS)
2099                         rdev->wiphy.coverage_class = coverage_class;
2100
2101                 result = rdev_set_wiphy_params(rdev, changed);
2102                 if (result) {
2103                         rdev->wiphy.retry_short = old_retry_short;
2104                         rdev->wiphy.retry_long = old_retry_long;
2105                         rdev->wiphy.frag_threshold = old_frag_threshold;
2106                         rdev->wiphy.rts_threshold = old_rts_threshold;
2107                         rdev->wiphy.coverage_class = old_coverage_class;
2108                 }
2109         }
2110
2111  bad_res:
2112         if (netdev)
2113                 dev_put(netdev);
2114         return result;
2115 }
2116
2117 static inline u64 wdev_id(struct wireless_dev *wdev)
2118 {
2119         return (u64)wdev->identifier |
2120                ((u64)wiphy_to_dev(wdev->wiphy)->wiphy_idx << 32);
2121 }
2122
2123 static int nl80211_send_chandef(struct sk_buff *msg,
2124                                  struct cfg80211_chan_def *chandef)
2125 {
2126         WARN_ON(!cfg80211_chandef_valid(chandef));
2127
2128         if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
2129                         chandef->chan->center_freq))
2130                 return -ENOBUFS;
2131         switch (chandef->width) {
2132         case NL80211_CHAN_WIDTH_20_NOHT:
2133         case NL80211_CHAN_WIDTH_20:
2134         case NL80211_CHAN_WIDTH_40:
2135                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
2136                                 cfg80211_get_chandef_type(chandef)))
2137                         return -ENOBUFS;
2138                 break;
2139         default:
2140                 break;
2141         }
2142         if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, chandef->width))
2143                 return -ENOBUFS;
2144         if (nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1, chandef->center_freq1))
2145                 return -ENOBUFS;
2146         if (chandef->center_freq2 &&
2147             nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2, chandef->center_freq2))
2148                 return -ENOBUFS;
2149         return 0;
2150 }
2151
2152 static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags,
2153                               struct cfg80211_registered_device *rdev,
2154                               struct wireless_dev *wdev)
2155 {
2156         struct net_device *dev = wdev->netdev;
2157         void *hdr;
2158
2159         hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_INTERFACE);
2160         if (!hdr)
2161                 return -1;
2162
2163         if (dev &&
2164             (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
2165              nla_put_string(msg, NL80211_ATTR_IFNAME, dev->name)))
2166                 goto nla_put_failure;
2167
2168         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
2169             nla_put_u32(msg, NL80211_ATTR_IFTYPE, wdev->iftype) ||
2170             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
2171             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, wdev_address(wdev)) ||
2172             nla_put_u32(msg, NL80211_ATTR_GENERATION,
2173                         rdev->devlist_generation ^
2174                         (cfg80211_rdev_list_generation << 2)))
2175                 goto nla_put_failure;
2176
2177         if (rdev->ops->get_channel) {
2178                 int ret;
2179                 struct cfg80211_chan_def chandef;
2180
2181                 ret = rdev_get_channel(rdev, wdev, &chandef);
2182                 if (ret == 0) {
2183                         if (nl80211_send_chandef(msg, &chandef))
2184                                 goto nla_put_failure;
2185                 }
2186         }
2187
2188         if (wdev->ssid_len) {
2189                 if (nla_put(msg, NL80211_ATTR_SSID, wdev->ssid_len, wdev->ssid))
2190                         goto nla_put_failure;
2191         }
2192
2193         return genlmsg_end(msg, hdr);
2194
2195  nla_put_failure:
2196         genlmsg_cancel(msg, hdr);
2197         return -EMSGSIZE;
2198 }
2199
2200 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
2201 {
2202         int wp_idx = 0;
2203         int if_idx = 0;
2204         int wp_start = cb->args[0];
2205         int if_start = cb->args[1];
2206         struct cfg80211_registered_device *rdev;
2207         struct wireless_dev *wdev;
2208
2209         rtnl_lock();
2210         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
2211                 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
2212                         continue;
2213                 if (wp_idx < wp_start) {
2214                         wp_idx++;
2215                         continue;
2216                 }
2217                 if_idx = 0;
2218
2219                 list_for_each_entry(wdev, &rdev->wdev_list, list) {
2220                         if (if_idx < if_start) {
2221                                 if_idx++;
2222                                 continue;
2223                         }
2224                         if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).portid,
2225                                                cb->nlh->nlmsg_seq, NLM_F_MULTI,
2226                                                rdev, wdev) < 0) {
2227                                 goto out;
2228                         }
2229                         if_idx++;
2230                 }
2231
2232                 wp_idx++;
2233         }
2234  out:
2235         rtnl_unlock();
2236
2237         cb->args[0] = wp_idx;
2238         cb->args[1] = if_idx;
2239
2240         return skb->len;
2241 }
2242
2243 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
2244 {
2245         struct sk_buff *msg;
2246         struct cfg80211_registered_device *dev = info->user_ptr[0];
2247         struct wireless_dev *wdev = info->user_ptr[1];
2248
2249         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2250         if (!msg)
2251                 return -ENOMEM;
2252
2253         if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
2254                                dev, wdev) < 0) {
2255                 nlmsg_free(msg);
2256                 return -ENOBUFS;
2257         }
2258
2259         return genlmsg_reply(msg, info);
2260 }
2261
2262 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
2263         [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
2264         [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
2265         [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
2266         [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
2267         [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
2268         [NL80211_MNTR_FLAG_ACTIVE] = { .type = NLA_FLAG },
2269 };
2270
2271 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
2272 {
2273         struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
2274         int flag;
2275
2276         *mntrflags = 0;
2277
2278         if (!nla)
2279                 return -EINVAL;
2280
2281         if (nla_parse_nested(flags, NL80211_MNTR_FLAG_MAX,
2282                              nla, mntr_flags_policy))
2283                 return -EINVAL;
2284
2285         for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
2286                 if (flags[flag])
2287                         *mntrflags |= (1<<flag);
2288
2289         return 0;
2290 }
2291
2292 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
2293                                struct net_device *netdev, u8 use_4addr,
2294                                enum nl80211_iftype iftype)
2295 {
2296         if (!use_4addr) {
2297                 if (netdev && (netdev->priv_flags & IFF_BRIDGE_PORT))
2298                         return -EBUSY;
2299                 return 0;
2300         }
2301
2302         switch (iftype) {
2303         case NL80211_IFTYPE_AP_VLAN:
2304                 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
2305                         return 0;
2306                 break;
2307         case NL80211_IFTYPE_STATION:
2308                 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
2309                         return 0;
2310                 break;
2311         default:
2312                 break;
2313         }
2314
2315         return -EOPNOTSUPP;
2316 }
2317
2318 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
2319 {
2320         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2321         struct vif_params params;
2322         int err;
2323         enum nl80211_iftype otype, ntype;
2324         struct net_device *dev = info->user_ptr[1];
2325         u32 _flags, *flags = NULL;
2326         bool change = false;
2327
2328         memset(&params, 0, sizeof(params));
2329
2330         otype = ntype = dev->ieee80211_ptr->iftype;
2331
2332         if (info->attrs[NL80211_ATTR_IFTYPE]) {
2333                 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
2334                 if (otype != ntype)
2335                         change = true;
2336                 if (ntype > NL80211_IFTYPE_MAX)
2337                         return -EINVAL;
2338         }
2339
2340         if (info->attrs[NL80211_ATTR_MESH_ID]) {
2341                 struct wireless_dev *wdev = dev->ieee80211_ptr;
2342
2343                 if (ntype != NL80211_IFTYPE_MESH_POINT)
2344                         return -EINVAL;
2345                 if (netif_running(dev))
2346                         return -EBUSY;
2347
2348                 wdev_lock(wdev);
2349                 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
2350                              IEEE80211_MAX_MESH_ID_LEN);
2351                 wdev->mesh_id_up_len =
2352                         nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
2353                 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
2354                        wdev->mesh_id_up_len);
2355                 wdev_unlock(wdev);
2356         }
2357
2358         if (info->attrs[NL80211_ATTR_4ADDR]) {
2359                 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
2360                 change = true;
2361                 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
2362                 if (err)
2363                         return err;
2364         } else {
2365                 params.use_4addr = -1;
2366         }
2367
2368         if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
2369                 if (ntype != NL80211_IFTYPE_MONITOR)
2370                         return -EINVAL;
2371                 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
2372                                           &_flags);
2373                 if (err)
2374                         return err;
2375
2376                 flags = &_flags;
2377                 change = true;
2378         }
2379
2380         if (flags && (*flags & NL80211_MNTR_FLAG_ACTIVE) &&
2381             !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
2382                 return -EOPNOTSUPP;
2383
2384         if (change)
2385                 err = cfg80211_change_iface(rdev, dev, ntype, flags, &params);
2386         else
2387                 err = 0;
2388
2389         if (!err && params.use_4addr != -1)
2390                 dev->ieee80211_ptr->use_4addr = params.use_4addr;
2391
2392         return err;
2393 }
2394
2395 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
2396 {
2397         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2398         struct vif_params params;
2399         struct wireless_dev *wdev;
2400         struct sk_buff *msg;
2401         int err;
2402         enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
2403         u32 flags;
2404
2405         memset(&params, 0, sizeof(params));
2406
2407         if (!info->attrs[NL80211_ATTR_IFNAME])
2408                 return -EINVAL;
2409
2410         if (info->attrs[NL80211_ATTR_IFTYPE]) {
2411                 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
2412                 if (type > NL80211_IFTYPE_MAX)
2413                         return -EINVAL;
2414         }
2415
2416         if (!rdev->ops->add_virtual_intf ||
2417             !(rdev->wiphy.interface_modes & (1 << type)))
2418                 return -EOPNOTSUPP;
2419
2420         if (type == NL80211_IFTYPE_P2P_DEVICE && info->attrs[NL80211_ATTR_MAC]) {
2421                 nla_memcpy(params.macaddr, info->attrs[NL80211_ATTR_MAC],
2422                            ETH_ALEN);
2423                 if (!is_valid_ether_addr(params.macaddr))
2424                         return -EADDRNOTAVAIL;
2425         }
2426
2427         if (info->attrs[NL80211_ATTR_4ADDR]) {
2428                 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
2429                 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
2430                 if (err)
2431                         return err;
2432         }
2433
2434         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2435         if (!msg)
2436                 return -ENOMEM;
2437
2438         err = parse_monitor_flags(type == NL80211_IFTYPE_MONITOR ?
2439                                   info->attrs[NL80211_ATTR_MNTR_FLAGS] : NULL,
2440                                   &flags);
2441
2442         if (!err && (flags & NL80211_MNTR_FLAG_ACTIVE) &&
2443             !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
2444                 return -EOPNOTSUPP;
2445
2446         wdev = rdev_add_virtual_intf(rdev,
2447                                 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
2448                                 type, err ? NULL : &flags, &params);
2449         if (IS_ERR(wdev)) {
2450                 nlmsg_free(msg);
2451                 return PTR_ERR(wdev);
2452         }
2453
2454         switch (type) {
2455         case NL80211_IFTYPE_MESH_POINT:
2456                 if (!info->attrs[NL80211_ATTR_MESH_ID])
2457                         break;
2458                 wdev_lock(wdev);
2459                 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
2460                              IEEE80211_MAX_MESH_ID_LEN);
2461                 wdev->mesh_id_up_len =
2462                         nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
2463                 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
2464                        wdev->mesh_id_up_len);
2465                 wdev_unlock(wdev);
2466                 break;
2467         case NL80211_IFTYPE_P2P_DEVICE:
2468                 /*
2469                  * P2P Device doesn't have a netdev, so doesn't go
2470                  * through the netdev notifier and must be added here
2471                  */
2472                 mutex_init(&wdev->mtx);
2473                 INIT_LIST_HEAD(&wdev->event_list);
2474                 spin_lock_init(&wdev->event_lock);
2475                 INIT_LIST_HEAD(&wdev->mgmt_registrations);
2476                 spin_lock_init(&wdev->mgmt_registrations_lock);
2477
2478                 wdev->identifier = ++rdev->wdev_id;
2479                 list_add_rcu(&wdev->list, &rdev->wdev_list);
2480                 rdev->devlist_generation++;
2481                 break;
2482         default:
2483                 break;
2484         }
2485
2486         if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
2487                                rdev, wdev) < 0) {
2488                 nlmsg_free(msg);
2489                 return -ENOBUFS;
2490         }
2491
2492         return genlmsg_reply(msg, info);
2493 }
2494
2495 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
2496 {
2497         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2498         struct wireless_dev *wdev = info->user_ptr[1];
2499
2500         if (!rdev->ops->del_virtual_intf)
2501                 return -EOPNOTSUPP;
2502
2503         /*
2504          * If we remove a wireless device without a netdev then clear
2505          * user_ptr[1] so that nl80211_post_doit won't dereference it
2506          * to check if it needs to do dev_put(). Otherwise it crashes
2507          * since the wdev has been freed, unlike with a netdev where
2508          * we need the dev_put() for the netdev to really be freed.
2509          */
2510         if (!wdev->netdev)
2511                 info->user_ptr[1] = NULL;
2512
2513         return rdev_del_virtual_intf(rdev, wdev);
2514 }
2515
2516 static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info)
2517 {
2518         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2519         struct net_device *dev = info->user_ptr[1];
2520         u16 noack_map;
2521
2522         if (!info->attrs[NL80211_ATTR_NOACK_MAP])
2523                 return -EINVAL;
2524
2525         if (!rdev->ops->set_noack_map)
2526                 return -EOPNOTSUPP;
2527
2528         noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]);
2529
2530         return rdev_set_noack_map(rdev, dev, noack_map);
2531 }
2532
2533 struct get_key_cookie {
2534         struct sk_buff *msg;
2535         int error;
2536         int idx;
2537 };
2538
2539 static void get_key_callback(void *c, struct key_params *params)
2540 {
2541         struct nlattr *key;
2542         struct get_key_cookie *cookie = c;
2543
2544         if ((params->key &&
2545              nla_put(cookie->msg, NL80211_ATTR_KEY_DATA,
2546                      params->key_len, params->key)) ||
2547             (params->seq &&
2548              nla_put(cookie->msg, NL80211_ATTR_KEY_SEQ,
2549                      params->seq_len, params->seq)) ||
2550             (params->cipher &&
2551              nla_put_u32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
2552                          params->cipher)))
2553                 goto nla_put_failure;
2554
2555         key = nla_nest_start(cookie->msg, NL80211_ATTR_KEY);
2556         if (!key)
2557                 goto nla_put_failure;
2558
2559         if ((params->key &&
2560              nla_put(cookie->msg, NL80211_KEY_DATA,
2561                      params->key_len, params->key)) ||
2562             (params->seq &&
2563              nla_put(cookie->msg, NL80211_KEY_SEQ,
2564                      params->seq_len, params->seq)) ||
2565             (params->cipher &&
2566              nla_put_u32(cookie->msg, NL80211_KEY_CIPHER,
2567                          params->cipher)))
2568                 goto nla_put_failure;
2569
2570         if (nla_put_u8(cookie->msg, NL80211_ATTR_KEY_IDX, cookie->idx))
2571                 goto nla_put_failure;
2572
2573         nla_nest_end(cookie->msg, key);
2574
2575         return;
2576  nla_put_failure:
2577         cookie->error = 1;
2578 }
2579
2580 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
2581 {
2582         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2583         int err;
2584         struct net_device *dev = info->user_ptr[1];
2585         u8 key_idx = 0;
2586         const u8 *mac_addr = NULL;
2587         bool pairwise;
2588         struct get_key_cookie cookie = {
2589                 .error = 0,
2590         };
2591         void *hdr;
2592         struct sk_buff *msg;
2593
2594         if (info->attrs[NL80211_ATTR_KEY_IDX])
2595                 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
2596
2597         if (key_idx > 5)
2598                 return -EINVAL;
2599
2600         if (info->attrs[NL80211_ATTR_MAC])
2601                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2602
2603         pairwise = !!mac_addr;
2604         if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
2605                 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
2606                 if (kt >= NUM_NL80211_KEYTYPES)
2607                         return -EINVAL;
2608                 if (kt != NL80211_KEYTYPE_GROUP &&
2609                     kt != NL80211_KEYTYPE_PAIRWISE)
2610                         return -EINVAL;
2611                 pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
2612         }
2613
2614         if (!rdev->ops->get_key)
2615                 return -EOPNOTSUPP;
2616
2617         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2618         if (!msg)
2619                 return -ENOMEM;
2620
2621         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
2622                              NL80211_CMD_NEW_KEY);
2623         if (IS_ERR(hdr))
2624                 return PTR_ERR(hdr);
2625
2626         cookie.msg = msg;
2627         cookie.idx = key_idx;
2628
2629         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
2630             nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx))
2631                 goto nla_put_failure;
2632         if (mac_addr &&
2633             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
2634                 goto nla_put_failure;
2635
2636         if (pairwise && mac_addr &&
2637             !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
2638                 return -ENOENT;
2639
2640         err = rdev_get_key(rdev, dev, key_idx, pairwise, mac_addr, &cookie,
2641                            get_key_callback);
2642
2643         if (err)
2644                 goto free_msg;
2645
2646         if (cookie.error)
2647                 goto nla_put_failure;
2648
2649         genlmsg_end(msg, hdr);
2650         return genlmsg_reply(msg, info);
2651
2652  nla_put_failure:
2653         err = -ENOBUFS;
2654  free_msg:
2655         nlmsg_free(msg);
2656         return err;
2657 }
2658
2659 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
2660 {
2661         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2662         struct key_parse key;
2663         int err;
2664         struct net_device *dev = info->user_ptr[1];
2665
2666         err = nl80211_parse_key(info, &key);
2667         if (err)
2668                 return err;
2669
2670         if (key.idx < 0)
2671                 return -EINVAL;
2672
2673         /* only support setting default key */
2674         if (!key.def && !key.defmgmt)
2675                 return -EINVAL;
2676
2677         wdev_lock(dev->ieee80211_ptr);
2678
2679         if (key.def) {
2680                 if (!rdev->ops->set_default_key) {
2681                         err = -EOPNOTSUPP;
2682                         goto out;
2683                 }
2684
2685                 err = nl80211_key_allowed(dev->ieee80211_ptr);
2686                 if (err)
2687                         goto out;
2688
2689                 err = rdev_set_default_key(rdev, dev, key.idx,
2690                                                  key.def_uni, key.def_multi);
2691
2692                 if (err)
2693                         goto out;
2694
2695 #ifdef CONFIG_CFG80211_WEXT
2696                 dev->ieee80211_ptr->wext.default_key = key.idx;
2697 #endif
2698         } else {
2699                 if (key.def_uni || !key.def_multi) {
2700                         err = -EINVAL;
2701                         goto out;
2702                 }
2703
2704                 if (!rdev->ops->set_default_mgmt_key) {
2705                         err = -EOPNOTSUPP;
2706                         goto out;
2707                 }
2708
2709                 err = nl80211_key_allowed(dev->ieee80211_ptr);
2710                 if (err)
2711                         goto out;
2712
2713                 err = rdev_set_default_mgmt_key(rdev, dev, key.idx);
2714                 if (err)
2715                         goto out;
2716
2717 #ifdef CONFIG_CFG80211_WEXT
2718                 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx;
2719 #endif
2720         }
2721
2722  out:
2723         wdev_unlock(dev->ieee80211_ptr);
2724
2725         return err;
2726 }
2727
2728 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
2729 {
2730         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2731         int err;
2732         struct net_device *dev = info->user_ptr[1];
2733         struct key_parse key;
2734         const u8 *mac_addr = NULL;
2735
2736         err = nl80211_parse_key(info, &key);
2737         if (err)
2738                 return err;
2739
2740         if (!key.p.key)
2741                 return -EINVAL;
2742
2743         if (info->attrs[NL80211_ATTR_MAC])
2744                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2745
2746         if (key.type == -1) {
2747                 if (mac_addr)
2748                         key.type = NL80211_KEYTYPE_PAIRWISE;
2749                 else
2750                         key.type = NL80211_KEYTYPE_GROUP;
2751         }
2752
2753         /* for now */
2754         if (key.type != NL80211_KEYTYPE_PAIRWISE &&
2755             key.type != NL80211_KEYTYPE_GROUP)
2756                 return -EINVAL;
2757
2758         if (!rdev->ops->add_key)
2759                 return -EOPNOTSUPP;
2760
2761         if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
2762                                            key.type == NL80211_KEYTYPE_PAIRWISE,
2763                                            mac_addr))
2764                 return -EINVAL;
2765
2766         wdev_lock(dev->ieee80211_ptr);
2767         err = nl80211_key_allowed(dev->ieee80211_ptr);
2768         if (!err)
2769                 err = rdev_add_key(rdev, dev, key.idx,
2770                                    key.type == NL80211_KEYTYPE_PAIRWISE,
2771                                     mac_addr, &key.p);
2772         wdev_unlock(dev->ieee80211_ptr);
2773
2774         return err;
2775 }
2776
2777 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
2778 {
2779         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2780         int err;
2781         struct net_device *dev = info->user_ptr[1];
2782         u8 *mac_addr = NULL;
2783         struct key_parse key;
2784
2785         err = nl80211_parse_key(info, &key);
2786         if (err)
2787                 return err;
2788
2789         if (info->attrs[NL80211_ATTR_MAC])
2790                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2791
2792         if (key.type == -1) {
2793                 if (mac_addr)
2794                         key.type = NL80211_KEYTYPE_PAIRWISE;
2795                 else
2796                         key.type = NL80211_KEYTYPE_GROUP;
2797         }
2798
2799         /* for now */
2800         if (key.type != NL80211_KEYTYPE_PAIRWISE &&
2801             key.type != NL80211_KEYTYPE_GROUP)
2802                 return -EINVAL;
2803
2804         if (!rdev->ops->del_key)
2805                 return -EOPNOTSUPP;
2806
2807         wdev_lock(dev->ieee80211_ptr);
2808         err = nl80211_key_allowed(dev->ieee80211_ptr);
2809
2810         if (key.type == NL80211_KEYTYPE_PAIRWISE && mac_addr &&
2811             !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
2812                 err = -ENOENT;
2813
2814         if (!err)
2815                 err = rdev_del_key(rdev, dev, key.idx,
2816                                    key.type == NL80211_KEYTYPE_PAIRWISE,
2817                                    mac_addr);
2818
2819 #ifdef CONFIG_CFG80211_WEXT
2820         if (!err) {
2821                 if (key.idx == dev->ieee80211_ptr->wext.default_key)
2822                         dev->ieee80211_ptr->wext.default_key = -1;
2823                 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key)
2824                         dev->ieee80211_ptr->wext.default_mgmt_key = -1;
2825         }
2826 #endif
2827         wdev_unlock(dev->ieee80211_ptr);
2828
2829         return err;
2830 }
2831
2832 /* This function returns an error or the number of nested attributes */
2833 static int validate_acl_mac_addrs(struct nlattr *nl_attr)
2834 {
2835         struct nlattr *attr;
2836         int n_entries = 0, tmp;
2837
2838         nla_for_each_nested(attr, nl_attr, tmp) {
2839                 if (nla_len(attr) != ETH_ALEN)
2840                         return -EINVAL;
2841
2842                 n_entries++;
2843         }
2844
2845         return n_entries;
2846 }
2847
2848 /*
2849  * This function parses ACL information and allocates memory for ACL data.
2850  * On successful return, the calling function is responsible to free the
2851  * ACL buffer returned by this function.
2852  */
2853 static struct cfg80211_acl_data *parse_acl_data(struct wiphy *wiphy,
2854                                                 struct genl_info *info)
2855 {
2856         enum nl80211_acl_policy acl_policy;
2857         struct nlattr *attr;
2858         struct cfg80211_acl_data *acl;
2859         int i = 0, n_entries, tmp;
2860
2861         if (!wiphy->max_acl_mac_addrs)
2862                 return ERR_PTR(-EOPNOTSUPP);
2863
2864         if (!info->attrs[NL80211_ATTR_ACL_POLICY])
2865                 return ERR_PTR(-EINVAL);
2866
2867         acl_policy = nla_get_u32(info->attrs[NL80211_ATTR_ACL_POLICY]);
2868         if (acl_policy != NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED &&
2869             acl_policy != NL80211_ACL_POLICY_DENY_UNLESS_LISTED)
2870                 return ERR_PTR(-EINVAL);
2871
2872         if (!info->attrs[NL80211_ATTR_MAC_ADDRS])
2873                 return ERR_PTR(-EINVAL);
2874
2875         n_entries = validate_acl_mac_addrs(info->attrs[NL80211_ATTR_MAC_ADDRS]);
2876         if (n_entries < 0)
2877                 return ERR_PTR(n_entries);
2878
2879         if (n_entries > wiphy->max_acl_mac_addrs)
2880                 return ERR_PTR(-ENOTSUPP);
2881
2882         acl = kzalloc(sizeof(*acl) + (sizeof(struct mac_address) * n_entries),
2883                       GFP_KERNEL);
2884         if (!acl)
2885                 return ERR_PTR(-ENOMEM);
2886
2887         nla_for_each_nested(attr, info->attrs[NL80211_ATTR_MAC_ADDRS], tmp) {
2888                 memcpy(acl->mac_addrs[i].addr, nla_data(attr), ETH_ALEN);
2889                 i++;
2890         }
2891
2892         acl->n_acl_entries = n_entries;
2893         acl->acl_policy = acl_policy;
2894
2895         return acl;
2896 }
2897
2898 static int nl80211_set_mac_acl(struct sk_buff *skb, struct genl_info *info)
2899 {
2900         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2901         struct net_device *dev = info->user_ptr[1];
2902         struct cfg80211_acl_data *acl;
2903         int err;
2904
2905         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2906             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2907                 return -EOPNOTSUPP;
2908
2909         if (!dev->ieee80211_ptr->beacon_interval)
2910                 return -EINVAL;
2911
2912         acl = parse_acl_data(&rdev->wiphy, info);
2913         if (IS_ERR(acl))
2914                 return PTR_ERR(acl);
2915
2916         err = rdev_set_mac_acl(rdev, dev, acl);
2917
2918         kfree(acl);
2919
2920         return err;
2921 }
2922
2923 static int nl80211_parse_beacon(struct nlattr *attrs[],
2924                                 struct cfg80211_beacon_data *bcn)
2925 {
2926         bool haveinfo = false;
2927
2928         if (!is_valid_ie_attr(attrs[NL80211_ATTR_BEACON_TAIL]) ||
2929             !is_valid_ie_attr(attrs[NL80211_ATTR_IE]) ||
2930             !is_valid_ie_attr(attrs[NL80211_ATTR_IE_PROBE_RESP]) ||
2931             !is_valid_ie_attr(attrs[NL80211_ATTR_IE_ASSOC_RESP]))
2932                 return -EINVAL;
2933
2934         memset(bcn, 0, sizeof(*bcn));
2935
2936         if (attrs[NL80211_ATTR_BEACON_HEAD]) {
2937                 bcn->head = nla_data(attrs[NL80211_ATTR_BEACON_HEAD]);
2938                 bcn->head_len = nla_len(attrs[NL80211_ATTR_BEACON_HEAD]);
2939                 if (!bcn->head_len)
2940                         return -EINVAL;
2941                 haveinfo = true;
2942         }
2943
2944         if (attrs[NL80211_ATTR_BEACON_TAIL]) {
2945                 bcn->tail = nla_data(attrs[NL80211_ATTR_BEACON_TAIL]);
2946                 bcn->tail_len = nla_len(attrs[NL80211_ATTR_BEACON_TAIL]);
2947                 haveinfo = true;
2948         }
2949
2950         if (!haveinfo)
2951                 return -EINVAL;
2952
2953         if (attrs[NL80211_ATTR_IE]) {
2954                 bcn->beacon_ies = nla_data(attrs[NL80211_ATTR_IE]);
2955                 bcn->beacon_ies_len = nla_len(attrs[NL80211_ATTR_IE]);
2956         }
2957
2958         if (attrs[NL80211_ATTR_IE_PROBE_RESP]) {
2959                 bcn->proberesp_ies =
2960                         nla_data(attrs[NL80211_ATTR_IE_PROBE_RESP]);
2961                 bcn->proberesp_ies_len =
2962                         nla_len(attrs[NL80211_ATTR_IE_PROBE_RESP]);
2963         }
2964
2965         if (attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
2966                 bcn->assocresp_ies =
2967                         nla_data(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
2968                 bcn->assocresp_ies_len =
2969                         nla_len(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
2970         }
2971
2972         if (attrs[NL80211_ATTR_PROBE_RESP]) {
2973                 bcn->probe_resp = nla_data(attrs[NL80211_ATTR_PROBE_RESP]);
2974                 bcn->probe_resp_len = nla_len(attrs[NL80211_ATTR_PROBE_RESP]);
2975         }
2976
2977         return 0;
2978 }
2979
2980 static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev,
2981                                    struct cfg80211_ap_settings *params)
2982 {
2983         struct wireless_dev *wdev;
2984         bool ret = false;
2985
2986         list_for_each_entry(wdev, &rdev->wdev_list, list) {
2987                 if (wdev->iftype != NL80211_IFTYPE_AP &&
2988                     wdev->iftype != NL80211_IFTYPE_P2P_GO)
2989                         continue;
2990
2991                 if (!wdev->preset_chandef.chan)
2992                         continue;
2993
2994                 params->chandef = wdev->preset_chandef;
2995                 ret = true;
2996                 break;
2997         }
2998
2999         return ret;
3000 }
3001
3002 static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev,
3003                                     enum nl80211_auth_type auth_type,
3004                                     enum nl80211_commands cmd)
3005 {
3006         if (auth_type > NL80211_AUTHTYPE_MAX)
3007                 return false;
3008
3009         switch (cmd) {
3010         case NL80211_CMD_AUTHENTICATE:
3011                 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
3012                     auth_type == NL80211_AUTHTYPE_SAE)
3013                         return false;
3014                 return true;
3015         case NL80211_CMD_CONNECT:
3016         case NL80211_CMD_START_AP:
3017                 /* SAE not supported yet */
3018                 if (auth_type == NL80211_AUTHTYPE_SAE)
3019                         return false;
3020                 return true;
3021         default:
3022                 return false;
3023         }
3024 }
3025
3026 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
3027 {
3028         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3029         struct net_device *dev = info->user_ptr[1];
3030         struct wireless_dev *wdev = dev->ieee80211_ptr;
3031         struct cfg80211_ap_settings params;
3032         int err;
3033         u8 radar_detect_width = 0;
3034
3035         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3036             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3037                 return -EOPNOTSUPP;
3038
3039         if (!rdev->ops->start_ap)
3040                 return -EOPNOTSUPP;
3041
3042         if (wdev->beacon_interval)
3043                 return -EALREADY;
3044
3045         memset(&params, 0, sizeof(params));
3046
3047         /* these are required for START_AP */
3048         if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
3049             !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
3050             !info->attrs[NL80211_ATTR_BEACON_HEAD])
3051                 return -EINVAL;
3052
3053         err = nl80211_parse_beacon(info->attrs, &params.beacon);
3054         if (err)
3055                 return err;
3056
3057         params.beacon_interval =
3058                 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
3059         params.dtim_period =
3060                 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
3061
3062         err = cfg80211_validate_beacon_int(rdev, params.beacon_interval);
3063         if (err)
3064                 return err;
3065
3066         /*
3067          * In theory, some of these attributes should be required here
3068          * but since they were not used when the command was originally
3069          * added, keep them optional for old user space programs to let
3070          * them continue to work with drivers that do not need the
3071          * additional information -- drivers must check!
3072          */
3073         if (info->attrs[NL80211_ATTR_SSID]) {
3074                 params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
3075                 params.ssid_len =
3076                         nla_len(info->attrs[NL80211_ATTR_SSID]);
3077                 if (params.ssid_len == 0 ||
3078                     params.ssid_len > IEEE80211_MAX_SSID_LEN)
3079                         return -EINVAL;
3080         }
3081
3082         if (info->attrs[NL80211_ATTR_HIDDEN_SSID]) {
3083                 params.hidden_ssid = nla_get_u32(
3084                         info->attrs[NL80211_ATTR_HIDDEN_SSID]);
3085                 if (params.hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE &&
3086                     params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_LEN &&
3087                     params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_CONTENTS)
3088                         return -EINVAL;
3089         }
3090
3091         params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
3092
3093         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
3094                 params.auth_type = nla_get_u32(
3095                         info->attrs[NL80211_ATTR_AUTH_TYPE]);
3096                 if (!nl80211_valid_auth_type(rdev, params.auth_type,
3097                                              NL80211_CMD_START_AP))
3098                         return -EINVAL;
3099         } else
3100                 params.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
3101
3102         err = nl80211_crypto_settings(rdev, info, &params.crypto,
3103                                       NL80211_MAX_NR_CIPHER_SUITES);
3104         if (err)
3105                 return err;
3106
3107         if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) {
3108                 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER))
3109                         return -EOPNOTSUPP;
3110                 params.inactivity_timeout = nla_get_u16(
3111                         info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]);
3112         }
3113
3114         if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
3115                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3116                         return -EINVAL;
3117                 params.p2p_ctwindow =
3118                         nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
3119                 if (params.p2p_ctwindow > 127)
3120                         return -EINVAL;
3121                 if (params.p2p_ctwindow != 0 &&
3122                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
3123                         return -EINVAL;
3124         }
3125
3126         if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
3127                 u8 tmp;
3128
3129                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3130                         return -EINVAL;
3131                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
3132                 if (tmp > 1)
3133                         return -EINVAL;
3134                 params.p2p_opp_ps = tmp;
3135                 if (params.p2p_opp_ps != 0 &&
3136                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
3137                         return -EINVAL;
3138         }
3139
3140         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
3141                 err = nl80211_parse_chandef(rdev, info, &params.chandef);
3142                 if (err)
3143                         return err;
3144         } else if (wdev->preset_chandef.chan) {
3145                 params.chandef = wdev->preset_chandef;
3146         } else if (!nl80211_get_ap_channel(rdev, &params))
3147                 return -EINVAL;
3148
3149         if (!cfg80211_reg_can_beacon(&rdev->wiphy, &params.chandef))
3150                 return -EINVAL;
3151
3152         err = cfg80211_chandef_dfs_required(wdev->wiphy, &params.chandef);
3153         if (err < 0)
3154                 return err;
3155         if (err) {
3156                 radar_detect_width = BIT(params.chandef.width);
3157                 params.radar_required = true;
3158         }
3159
3160         err = cfg80211_can_use_iftype_chan(rdev, wdev, wdev->iftype,
3161                                            params.chandef.chan,
3162                                            CHAN_MODE_SHARED,
3163                                            radar_detect_width);
3164         if (err)
3165                 return err;
3166
3167         if (info->attrs[NL80211_ATTR_ACL_POLICY]) {
3168                 params.acl = parse_acl_data(&rdev->wiphy, info);
3169                 if (IS_ERR(params.acl))
3170                         return PTR_ERR(params.acl);
3171         }
3172
3173         err = rdev_start_ap(rdev, dev, &params);
3174         if (!err) {
3175                 wdev->preset_chandef = params.chandef;
3176                 wdev->beacon_interval = params.beacon_interval;
3177                 wdev->channel = params.chandef.chan;
3178                 wdev->ssid_len = params.ssid_len;
3179                 memcpy(wdev->ssid, params.ssid, wdev->ssid_len);
3180         }
3181
3182         kfree(params.acl);
3183
3184         return err;
3185 }
3186
3187 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info)
3188 {
3189         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3190         struct net_device *dev = info->user_ptr[1];
3191         struct wireless_dev *wdev = dev->ieee80211_ptr;
3192         struct cfg80211_beacon_data params;
3193         int err;
3194
3195         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3196             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3197                 return -EOPNOTSUPP;
3198
3199         if (!rdev->ops->change_beacon)
3200                 return -EOPNOTSUPP;
3201
3202         if (!wdev->beacon_interval)
3203                 return -EINVAL;
3204
3205         err = nl80211_parse_beacon(info->attrs, &params);
3206         if (err)
3207                 return err;
3208
3209         return rdev_change_beacon(rdev, dev, &params);
3210 }
3211
3212 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info)
3213 {
3214         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3215         struct net_device *dev = info->user_ptr[1];
3216
3217         return cfg80211_stop_ap(rdev, dev);
3218 }
3219
3220 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
3221         [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
3222         [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
3223         [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
3224         [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
3225         [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
3226         [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG },
3227 };
3228
3229 static int parse_station_flags(struct genl_info *info,
3230                                enum nl80211_iftype iftype,
3231                                struct station_parameters *params)
3232 {
3233         struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
3234         struct nlattr *nla;
3235         int flag;
3236
3237         /*
3238          * Try parsing the new attribute first so userspace
3239          * can specify both for older kernels.
3240          */
3241         nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
3242         if (nla) {
3243                 struct nl80211_sta_flag_update *sta_flags;
3244
3245                 sta_flags = nla_data(nla);
3246                 params->sta_flags_mask = sta_flags->mask;
3247                 params->sta_flags_set = sta_flags->set;
3248                 params->sta_flags_set &= params->sta_flags_mask;
3249                 if ((params->sta_flags_mask |
3250                      params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
3251                         return -EINVAL;
3252                 return 0;
3253         }
3254
3255         /* if present, parse the old attribute */
3256
3257         nla = info->attrs[NL80211_ATTR_STA_FLAGS];
3258         if (!nla)
3259                 return 0;
3260
3261         if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX,
3262                              nla, sta_flags_policy))
3263                 return -EINVAL;
3264
3265         /*
3266          * Only allow certain flags for interface types so that
3267          * other attributes are silently ignored. Remember that
3268          * this is backward compatibility code with old userspace
3269          * and shouldn't be hit in other cases anyway.
3270          */
3271         switch (iftype) {
3272         case NL80211_IFTYPE_AP:
3273         case NL80211_IFTYPE_AP_VLAN:
3274         case NL80211_IFTYPE_P2P_GO:
3275                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
3276                                          BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
3277                                          BIT(NL80211_STA_FLAG_WME) |
3278                                          BIT(NL80211_STA_FLAG_MFP);
3279                 break;
3280         case NL80211_IFTYPE_P2P_CLIENT:
3281         case NL80211_IFTYPE_STATION:
3282                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
3283                                          BIT(NL80211_STA_FLAG_TDLS_PEER);
3284                 break;
3285         case NL80211_IFTYPE_MESH_POINT:
3286                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3287                                          BIT(NL80211_STA_FLAG_MFP) |
3288                                          BIT(NL80211_STA_FLAG_AUTHORIZED);
3289         default:
3290                 return -EINVAL;
3291         }
3292
3293         for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) {
3294                 if (flags[flag]) {
3295                         params->sta_flags_set |= (1<<flag);
3296
3297                         /* no longer support new API additions in old API */
3298                         if (flag > NL80211_STA_FLAG_MAX_OLD_API)
3299                                 return -EINVAL;
3300                 }
3301         }
3302
3303         return 0;
3304 }
3305
3306 static bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info,
3307                                  int attr)
3308 {
3309         struct nlattr *rate;
3310         u32 bitrate;
3311         u16 bitrate_compat;
3312
3313         rate = nla_nest_start(msg, attr);
3314         if (!rate)
3315                 return false;
3316
3317         /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
3318         bitrate = cfg80211_calculate_bitrate(info);
3319         /* report 16-bit bitrate only if we can */
3320         bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0;
3321         if (bitrate > 0 &&
3322             nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate))
3323                 return false;
3324         if (bitrate_compat > 0 &&
3325             nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat))
3326                 return false;
3327
3328         if (info->flags & RATE_INFO_FLAGS_MCS) {
3329                 if (nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs))
3330                         return false;
3331                 if (info->flags & RATE_INFO_FLAGS_40_MHZ_WIDTH &&
3332                     nla_put_flag(msg, NL80211_RATE_INFO_40_MHZ_WIDTH))
3333                         return false;
3334                 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
3335                     nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
3336                         return false;
3337         } else if (info->flags & RATE_INFO_FLAGS_VHT_MCS) {
3338                 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_MCS, info->mcs))
3339                         return false;
3340                 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_NSS, info->nss))
3341                         return false;
3342                 if (info->flags & RATE_INFO_FLAGS_40_MHZ_WIDTH &&
3343                     nla_put_flag(msg, NL80211_RATE_INFO_40_MHZ_WIDTH))
3344                         return false;
3345                 if (info->flags & RATE_INFO_FLAGS_80_MHZ_WIDTH &&
3346                     nla_put_flag(msg, NL80211_RATE_INFO_80_MHZ_WIDTH))
3347                         return false;
3348                 if (info->flags & RATE_INFO_FLAGS_80P80_MHZ_WIDTH &&
3349                     nla_put_flag(msg, NL80211_RATE_INFO_80P80_MHZ_WIDTH))
3350                         return false;
3351                 if (info->flags & RATE_INFO_FLAGS_160_MHZ_WIDTH &&
3352                     nla_put_flag(msg, NL80211_RATE_INFO_160_MHZ_WIDTH))
3353                         return false;
3354                 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
3355                     nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
3356                         return false;
3357         }
3358
3359         nla_nest_end(msg, rate);
3360         return true;
3361 }
3362
3363 static bool nl80211_put_signal(struct sk_buff *msg, u8 mask, s8 *signal,
3364                                int id)
3365 {
3366         void *attr;
3367         int i = 0;
3368
3369         if (!mask)
3370                 return true;
3371
3372         attr = nla_nest_start(msg, id);
3373         if (!attr)
3374                 return false;
3375
3376         for (i = 0; i < IEEE80211_MAX_CHAINS; i++) {
3377                 if (!(mask & BIT(i)))
3378                         continue;
3379
3380                 if (nla_put_u8(msg, i, signal[i]))
3381                         return false;
3382         }
3383
3384         nla_nest_end(msg, attr);
3385
3386         return true;
3387 }
3388
3389 static int nl80211_send_station(struct sk_buff *msg, u32 portid, u32 seq,
3390                                 int flags,
3391                                 struct cfg80211_registered_device *rdev,
3392                                 struct net_device *dev,
3393                                 const u8 *mac_addr, struct station_info *sinfo)
3394 {
3395         void *hdr;
3396         struct nlattr *sinfoattr, *bss_param;
3397
3398         hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_STATION);
3399         if (!hdr)
3400                 return -1;
3401
3402         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3403             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
3404             nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation))
3405                 goto nla_put_failure;
3406
3407         sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO);
3408         if (!sinfoattr)
3409                 goto nla_put_failure;
3410         if ((sinfo->filled & STATION_INFO_CONNECTED_TIME) &&
3411             nla_put_u32(msg, NL80211_STA_INFO_CONNECTED_TIME,
3412                         sinfo->connected_time))
3413                 goto nla_put_failure;
3414         if ((sinfo->filled & STATION_INFO_INACTIVE_TIME) &&
3415             nla_put_u32(msg, NL80211_STA_INFO_INACTIVE_TIME,
3416                         sinfo->inactive_time))
3417                 goto nla_put_failure;
3418         if ((sinfo->filled & (STATION_INFO_RX_BYTES |
3419                               STATION_INFO_RX_BYTES64)) &&
3420             nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES,
3421                         (u32)sinfo->rx_bytes))
3422                 goto nla_put_failure;
3423         if ((sinfo->filled & (STATION_INFO_TX_BYTES |
3424                               STATION_INFO_TX_BYTES64)) &&
3425             nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES,
3426                         (u32)sinfo->tx_bytes))
3427                 goto nla_put_failure;
3428         if ((sinfo->filled & STATION_INFO_RX_BYTES64) &&
3429             nla_put_u64(msg, NL80211_STA_INFO_RX_BYTES64,
3430                         sinfo->rx_bytes))
3431                 goto nla_put_failure;
3432         if ((sinfo->filled & STATION_INFO_TX_BYTES64) &&
3433             nla_put_u64(msg, NL80211_STA_INFO_TX_BYTES64,
3434                         sinfo->tx_bytes))
3435                 goto nla_put_failure;
3436         if ((sinfo->filled & STATION_INFO_LLID) &&
3437             nla_put_u16(msg, NL80211_STA_INFO_LLID, sinfo->llid))
3438                 goto nla_put_failure;
3439         if ((sinfo->filled & STATION_INFO_PLID) &&
3440             nla_put_u16(msg, NL80211_STA_INFO_PLID, sinfo->plid))
3441                 goto nla_put_failure;
3442         if ((sinfo->filled & STATION_INFO_PLINK_STATE) &&
3443             nla_put_u8(msg, NL80211_STA_INFO_PLINK_STATE,
3444                        sinfo->plink_state))
3445                 goto nla_put_failure;
3446         switch (rdev->wiphy.signal_type) {
3447         case CFG80211_SIGNAL_TYPE_MBM:
3448                 if ((sinfo->filled & STATION_INFO_SIGNAL) &&
3449                     nla_put_u8(msg, NL80211_STA_INFO_SIGNAL,
3450                                sinfo->signal))
3451                         goto nla_put_failure;
3452                 if ((sinfo->filled & STATION_INFO_SIGNAL_AVG) &&
3453                     nla_put_u8(msg, NL80211_STA_INFO_SIGNAL_AVG,
3454                                sinfo->signal_avg))
3455                         goto nla_put_failure;
3456                 break;
3457         default:
3458                 break;
3459         }
3460         if (sinfo->filled & STATION_INFO_CHAIN_SIGNAL) {
3461                 if (!nl80211_put_signal(msg, sinfo->chains,
3462                                         sinfo->chain_signal,
3463                                         NL80211_STA_INFO_CHAIN_SIGNAL))
3464                         goto nla_put_failure;
3465         }
3466         if (sinfo->filled & STATION_INFO_CHAIN_SIGNAL_AVG) {
3467                 if (!nl80211_put_signal(msg, sinfo->chains,
3468                                         sinfo->chain_signal_avg,
3469                                         NL80211_STA_INFO_CHAIN_SIGNAL_AVG))
3470                         goto nla_put_failure;
3471         }
3472         if (sinfo->filled & STATION_INFO_TX_BITRATE) {
3473                 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
3474                                           NL80211_STA_INFO_TX_BITRATE))
3475                         goto nla_put_failure;
3476         }
3477         if (sinfo->filled & STATION_INFO_RX_BITRATE) {
3478                 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
3479                                           NL80211_STA_INFO_RX_BITRATE))
3480                         goto nla_put_failure;
3481         }
3482         if ((sinfo->filled & STATION_INFO_RX_PACKETS) &&
3483             nla_put_u32(msg, NL80211_STA_INFO_RX_PACKETS,
3484                         sinfo->rx_packets))
3485                 goto nla_put_failure;
3486         if ((sinfo->filled & STATION_INFO_TX_PACKETS) &&
3487             nla_put_u32(msg, NL80211_STA_INFO_TX_PACKETS,
3488                         sinfo->tx_packets))
3489                 goto nla_put_failure;
3490         if ((sinfo->filled & STATION_INFO_TX_RETRIES) &&
3491             nla_put_u32(msg, NL80211_STA_INFO_TX_RETRIES,
3492                         sinfo->tx_retries))
3493                 goto nla_put_failure;
3494         if ((sinfo->filled & STATION_INFO_TX_FAILED) &&
3495             nla_put_u32(msg, NL80211_STA_INFO_TX_FAILED,
3496                         sinfo->tx_failed))
3497                 goto nla_put_failure;
3498         if ((sinfo->filled & STATION_INFO_BEACON_LOSS_COUNT) &&
3499             nla_put_u32(msg, NL80211_STA_INFO_BEACON_LOSS,
3500                         sinfo->beacon_loss_count))
3501                 goto nla_put_failure;
3502         if ((sinfo->filled & STATION_INFO_LOCAL_PM) &&
3503             nla_put_u32(msg, NL80211_STA_INFO_LOCAL_PM,
3504                         sinfo->local_pm))
3505                 goto nla_put_failure;
3506         if ((sinfo->filled & STATION_INFO_PEER_PM) &&
3507             nla_put_u32(msg, NL80211_STA_INFO_PEER_PM,
3508                         sinfo->peer_pm))
3509                 goto nla_put_failure;
3510         if ((sinfo->filled & STATION_INFO_NONPEER_PM) &&
3511             nla_put_u32(msg, NL80211_STA_INFO_NONPEER_PM,
3512                         sinfo->nonpeer_pm))
3513                 goto nla_put_failure;
3514         if (sinfo->filled & STATION_INFO_BSS_PARAM) {
3515                 bss_param = nla_nest_start(msg, NL80211_STA_INFO_BSS_PARAM);
3516                 if (!bss_param)
3517                         goto nla_put_failure;
3518
3519                 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) &&
3520                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) ||
3521                     ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) &&
3522                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) ||
3523                     ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) &&
3524                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) ||
3525                     nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
3526                                sinfo->bss_param.dtim_period) ||
3527                     nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
3528                                 sinfo->bss_param.beacon_interval))
3529                         goto nla_put_failure;
3530
3531                 nla_nest_end(msg, bss_param);
3532         }
3533         if ((sinfo->filled & STATION_INFO_STA_FLAGS) &&
3534             nla_put(msg, NL80211_STA_INFO_STA_FLAGS,
3535                     sizeof(struct nl80211_sta_flag_update),
3536                     &sinfo->sta_flags))
3537                 goto nla_put_failure;
3538         if ((sinfo->filled & STATION_INFO_T_OFFSET) &&
3539                 nla_put_u64(msg, NL80211_STA_INFO_T_OFFSET,
3540                             sinfo->t_offset))
3541                 goto nla_put_failure;
3542         nla_nest_end(msg, sinfoattr);
3543
3544         if ((sinfo->filled & STATION_INFO_ASSOC_REQ_IES) &&
3545             nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
3546                     sinfo->assoc_req_ies))
3547                 goto nla_put_failure;
3548
3549         return genlmsg_end(msg, hdr);
3550
3551  nla_put_failure:
3552         genlmsg_cancel(msg, hdr);
3553         return -EMSGSIZE;
3554 }
3555
3556 static int nl80211_dump_station(struct sk_buff *skb,
3557                                 struct netlink_callback *cb)
3558 {
3559         struct station_info sinfo;
3560         struct cfg80211_registered_device *dev;
3561         struct wireless_dev *wdev;
3562         u8 mac_addr[ETH_ALEN];
3563         int sta_idx = cb->args[2];
3564         int err;
3565
3566         err = nl80211_prepare_wdev_dump(skb, cb, &dev, &wdev);
3567         if (err)
3568                 return err;
3569
3570         if (!wdev->netdev) {
3571                 err = -EINVAL;
3572                 goto out_err;
3573         }
3574
3575         if (!dev->ops->dump_station) {
3576                 err = -EOPNOTSUPP;
3577                 goto out_err;
3578         }
3579
3580         while (1) {
3581                 memset(&sinfo, 0, sizeof(sinfo));
3582                 err = rdev_dump_station(dev, wdev->netdev, sta_idx,
3583                                         mac_addr, &sinfo);
3584                 if (err == -ENOENT)
3585                         break;
3586                 if (err)
3587                         goto out_err;
3588
3589                 if (nl80211_send_station(skb,
3590                                 NETLINK_CB(cb->skb).portid,
3591                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
3592                                 dev, wdev->netdev, mac_addr,
3593                                 &sinfo) < 0)
3594                         goto out;
3595
3596                 sta_idx++;
3597         }
3598
3599
3600  out:
3601         cb->args[2] = sta_idx;
3602         err = skb->len;
3603  out_err:
3604         nl80211_finish_wdev_dump(dev);
3605
3606         return err;
3607 }
3608
3609 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
3610 {
3611         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3612         struct net_device *dev = info->user_ptr[1];
3613         struct station_info sinfo;
3614         struct sk_buff *msg;
3615         u8 *mac_addr = NULL;
3616         int err;
3617
3618         memset(&sinfo, 0, sizeof(sinfo));
3619
3620         if (!info->attrs[NL80211_ATTR_MAC])
3621                 return -EINVAL;
3622
3623         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3624
3625         if (!rdev->ops->get_station)
3626                 return -EOPNOTSUPP;
3627
3628         err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
3629         if (err)
3630                 return err;
3631
3632         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3633         if (!msg)
3634                 return -ENOMEM;
3635
3636         if (nl80211_send_station(msg, info->snd_portid, info->snd_seq, 0,
3637                                  rdev, dev, mac_addr, &sinfo) < 0) {
3638                 nlmsg_free(msg);
3639                 return -ENOBUFS;
3640         }
3641
3642         return genlmsg_reply(msg, info);
3643 }
3644
3645 int cfg80211_check_station_change(struct wiphy *wiphy,
3646                                   struct station_parameters *params,
3647                                   enum cfg80211_station_type statype)
3648 {
3649         if (params->listen_interval != -1)
3650                 return -EINVAL;
3651         if (params->aid)
3652                 return -EINVAL;
3653
3654         /* When you run into this, adjust the code below for the new flag */
3655         BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
3656
3657         switch (statype) {
3658         case CFG80211_STA_MESH_PEER_KERNEL:
3659         case CFG80211_STA_MESH_PEER_USER:
3660                 /*
3661                  * No ignoring the TDLS flag here -- the userspace mesh
3662                  * code doesn't have the bug of including TDLS in the
3663                  * mask everywhere.
3664                  */
3665                 if (params->sta_flags_mask &
3666                                 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3667                                   BIT(NL80211_STA_FLAG_MFP) |
3668                                   BIT(NL80211_STA_FLAG_AUTHORIZED)))
3669                         return -EINVAL;
3670                 break;
3671         case CFG80211_STA_TDLS_PEER_SETUP:
3672         case CFG80211_STA_TDLS_PEER_ACTIVE:
3673                 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
3674                         return -EINVAL;
3675                 /* ignore since it can't change */
3676                 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
3677                 break;
3678         default:
3679                 /* disallow mesh-specific things */
3680                 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
3681                         return -EINVAL;
3682                 if (params->local_pm)
3683                         return -EINVAL;
3684                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
3685                         return -EINVAL;
3686         }
3687
3688         if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
3689             statype != CFG80211_STA_TDLS_PEER_ACTIVE) {
3690                 /* TDLS can't be set, ... */
3691                 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
3692                         return -EINVAL;
3693                 /*
3694                  * ... but don't bother the driver with it. This works around
3695                  * a hostapd/wpa_supplicant issue -- it always includes the
3696                  * TLDS_PEER flag in the mask even for AP mode.
3697                  */
3698                 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
3699         }
3700
3701         if (statype != CFG80211_STA_TDLS_PEER_SETUP) {
3702                 /* reject other things that can't change */
3703                 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD)
3704                         return -EINVAL;
3705                 if (params->sta_modify_mask & STATION_PARAM_APPLY_CAPABILITY)
3706                         return -EINVAL;
3707                 if (params->supported_rates)
3708                         return -EINVAL;
3709                 if (params->ext_capab || params->ht_capa || params->vht_capa)
3710                         return -EINVAL;
3711         }
3712
3713         if (statype != CFG80211_STA_AP_CLIENT) {
3714                 if (params->vlan)
3715                         return -EINVAL;
3716         }
3717
3718         switch (statype) {
3719         case CFG80211_STA_AP_MLME_CLIENT:
3720                 /* Use this only for authorizing/unauthorizing a station */
3721                 if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)))
3722                         return -EOPNOTSUPP;
3723                 break;
3724         case CFG80211_STA_AP_CLIENT:
3725                 /* accept only the listed bits */
3726                 if (params->sta_flags_mask &
3727                                 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
3728                                   BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3729                                   BIT(NL80211_STA_FLAG_ASSOCIATED) |
3730                                   BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
3731                                   BIT(NL80211_STA_FLAG_WME) |
3732                                   BIT(NL80211_STA_FLAG_MFP)))
3733                         return -EINVAL;
3734
3735                 /* but authenticated/associated only if driver handles it */
3736                 if (!(wiphy->features & NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
3737                     params->sta_flags_mask &
3738                                 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3739                                  BIT(NL80211_STA_FLAG_ASSOCIATED)))
3740                         return -EINVAL;
3741                 break;
3742         case CFG80211_STA_IBSS:
3743         case CFG80211_STA_AP_STA:
3744                 /* reject any changes other than AUTHORIZED */
3745                 if (params->sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
3746                         return -EINVAL;
3747                 break;
3748         case CFG80211_STA_TDLS_PEER_SETUP:
3749                 /* reject any changes other than AUTHORIZED or WME */
3750                 if (params->sta_flags_mask & ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
3751                                                BIT(NL80211_STA_FLAG_WME)))
3752                         return -EINVAL;
3753                 /* force (at least) rates when authorizing */
3754                 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED) &&
3755                     !params->supported_rates)
3756                         return -EINVAL;
3757                 break;
3758         case CFG80211_STA_TDLS_PEER_ACTIVE:
3759                 /* reject any changes */
3760                 return -EINVAL;
3761         case CFG80211_STA_MESH_PEER_KERNEL:
3762                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
3763                         return -EINVAL;
3764                 break;
3765         case CFG80211_STA_MESH_PEER_USER:
3766                 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
3767                         return -EINVAL;
3768                 break;
3769         }
3770
3771         return 0;
3772 }
3773 EXPORT_SYMBOL(cfg80211_check_station_change);
3774
3775 /*
3776  * Get vlan interface making sure it is running and on the right wiphy.
3777  */
3778 static struct net_device *get_vlan(struct genl_info *info,
3779                                    struct cfg80211_registered_device *rdev)
3780 {
3781         struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
3782         struct net_device *v;
3783         int ret;
3784
3785         if (!vlanattr)
3786                 return NULL;
3787
3788         v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr));
3789         if (!v)
3790                 return ERR_PTR(-ENODEV);
3791
3792         if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) {
3793                 ret = -EINVAL;
3794                 goto error;
3795         }
3796
3797         if (v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
3798             v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3799             v->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
3800                 ret = -EINVAL;
3801                 goto error;
3802         }
3803
3804         if (!netif_running(v)) {
3805                 ret = -ENETDOWN;
3806                 goto error;
3807         }
3808
3809         return v;
3810  error:
3811         dev_put(v);
3812         return ERR_PTR(ret);
3813 }
3814
3815 static struct nla_policy
3816 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] __read_mostly = {
3817         [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
3818         [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
3819 };
3820
3821 static int nl80211_parse_sta_wme(struct genl_info *info,
3822                                  struct station_parameters *params)
3823 {
3824         struct nlattr *tb[NL80211_STA_WME_MAX + 1];
3825         struct nlattr *nla;
3826         int err;
3827
3828         /* parse WME attributes if present */
3829         if (!info->attrs[NL80211_ATTR_STA_WME])
3830                 return 0;
3831
3832         nla = info->attrs[NL80211_ATTR_STA_WME];
3833         err = nla_parse_nested(tb, NL80211_STA_WME_MAX, nla,
3834                                nl80211_sta_wme_policy);
3835         if (err)
3836                 return err;
3837
3838         if (tb[NL80211_STA_WME_UAPSD_QUEUES])
3839                 params->uapsd_queues = nla_get_u8(
3840                         tb[NL80211_STA_WME_UAPSD_QUEUES]);
3841         if (params->uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
3842                 return -EINVAL;
3843
3844         if (tb[NL80211_STA_WME_MAX_SP])
3845                 params->max_sp = nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
3846
3847         if (params->max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
3848                 return -EINVAL;
3849
3850         params->sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
3851
3852         return 0;
3853 }
3854
3855 static int nl80211_set_station_tdls(struct genl_info *info,
3856                                     struct station_parameters *params)
3857 {
3858         /* Dummy STA entry gets updated once the peer capabilities are known */
3859         if (info->attrs[NL80211_ATTR_PEER_AID])
3860                 params->aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
3861         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
3862                 params->ht_capa =
3863                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
3864         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
3865                 params->vht_capa =
3866                         nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
3867
3868         return nl80211_parse_sta_wme(info, params);
3869 }
3870
3871 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
3872 {
3873         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3874         struct net_device *dev = info->user_ptr[1];
3875         struct station_parameters params;
3876         u8 *mac_addr;
3877         int err;
3878
3879         memset(&params, 0, sizeof(params));
3880
3881         params.listen_interval = -1;
3882
3883         if (!rdev->ops->change_station)
3884                 return -EOPNOTSUPP;
3885
3886         if (info->attrs[NL80211_ATTR_STA_AID])
3887                 return -EINVAL;
3888
3889         if (!info->attrs[NL80211_ATTR_MAC])
3890                 return -EINVAL;
3891
3892         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3893
3894         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
3895                 params.supported_rates =
3896                         nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
3897                 params.supported_rates_len =
3898                         nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
3899         }
3900
3901         if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
3902                 params.capability =
3903                         nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
3904                 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
3905         }
3906
3907         if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
3908                 params.ext_capab =
3909                         nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
3910                 params.ext_capab_len =
3911                         nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
3912         }
3913
3914         if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
3915                 return -EINVAL;
3916
3917         if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
3918                 return -EINVAL;
3919
3920         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
3921                 params.plink_action =
3922                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
3923                 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
3924                         return -EINVAL;
3925         }
3926
3927         if (info->attrs[NL80211_ATTR_STA_PLINK_STATE]) {
3928                 params.plink_state =
3929                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
3930                 if (params.plink_state >= NUM_NL80211_PLINK_STATES)
3931                         return -EINVAL;
3932                 params.sta_modify_mask |= STATION_PARAM_APPLY_PLINK_STATE;
3933         }
3934
3935         if (info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]) {
3936                 enum nl80211_mesh_power_mode pm = nla_get_u32(
3937                         info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]);
3938
3939                 if (pm <= NL80211_MESH_POWER_UNKNOWN ||
3940                     pm > NL80211_MESH_POWER_MAX)
3941                         return -EINVAL;
3942
3943                 params.local_pm = pm;
3944         }
3945
3946         /* Include parameters for TDLS peer (will check later) */
3947         err = nl80211_set_station_tdls(info, &params);
3948         if (err)
3949                 return err;
3950
3951         params.vlan = get_vlan(info, rdev);
3952         if (IS_ERR(params.vlan))
3953                 return PTR_ERR(params.vlan);
3954
3955         switch (dev->ieee80211_ptr->iftype) {
3956         case NL80211_IFTYPE_AP:
3957         case NL80211_IFTYPE_AP_VLAN:
3958         case NL80211_IFTYPE_P2P_GO:
3959         case NL80211_IFTYPE_P2P_CLIENT:
3960         case NL80211_IFTYPE_STATION:
3961         case NL80211_IFTYPE_ADHOC:
3962         case NL80211_IFTYPE_MESH_POINT:
3963                 break;
3964         default:
3965                 err = -EOPNOTSUPP;
3966                 goto out_put_vlan;
3967         }
3968
3969         /* driver will call cfg80211_check_station_change() */
3970         err = rdev_change_station(rdev, dev, mac_addr, &params);
3971
3972  out_put_vlan:
3973         if (params.vlan)
3974                 dev_put(params.vlan);
3975
3976         return err;
3977 }
3978
3979 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
3980 {
3981         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3982         int err;
3983         struct net_device *dev = info->user_ptr[1];
3984         struct station_parameters params;
3985         u8 *mac_addr = NULL;
3986
3987         memset(&params, 0, sizeof(params));
3988
3989         if (!rdev->ops->add_station)
3990                 return -EOPNOTSUPP;
3991
3992         if (!info->attrs[NL80211_ATTR_MAC])
3993                 return -EINVAL;
3994
3995         if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
3996                 return -EINVAL;
3997
3998         if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
3999                 return -EINVAL;
4000
4001         if (!info->attrs[NL80211_ATTR_STA_AID] &&
4002             !info->attrs[NL80211_ATTR_PEER_AID])
4003                 return -EINVAL;
4004
4005         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4006         params.supported_rates =
4007                 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4008         params.supported_rates_len =
4009                 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4010         params.listen_interval =
4011                 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
4012
4013         if (info->attrs[NL80211_ATTR_PEER_AID])
4014                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
4015         else
4016                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
4017         if (!params.aid || params.aid > IEEE80211_MAX_AID)
4018                 return -EINVAL;
4019
4020         if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
4021                 params.capability =
4022                         nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
4023                 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
4024         }
4025
4026         if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
4027                 params.ext_capab =
4028                         nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4029                 params.ext_capab_len =
4030                         nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4031         }
4032
4033         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
4034                 params.ht_capa =
4035                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
4036
4037         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
4038                 params.vht_capa =
4039                         nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
4040
4041         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
4042                 params.plink_action =
4043                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
4044                 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
4045                         return -EINVAL;
4046         }
4047
4048         err = nl80211_parse_sta_wme(info, &params);
4049         if (err)
4050                 return err;
4051
4052         if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
4053                 return -EINVAL;
4054
4055         /* When you run into this, adjust the code below for the new flag */
4056         BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
4057
4058         switch (dev->ieee80211_ptr->iftype) {
4059         case NL80211_IFTYPE_AP:
4060         case NL80211_IFTYPE_AP_VLAN:
4061         case NL80211_IFTYPE_P2P_GO:
4062                 /* ignore WME attributes if iface/sta is not capable */
4063                 if (!(rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) ||
4064                     !(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)))
4065                         params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4066
4067                 /* TDLS peers cannot be added */
4068                 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
4069                     info->attrs[NL80211_ATTR_PEER_AID])
4070                         return -EINVAL;
4071                 /* but don't bother the driver with it */
4072                 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
4073
4074                 /* allow authenticated/associated only if driver handles it */
4075                 if (!(rdev->wiphy.features &
4076                                 NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
4077                     params.sta_flags_mask &
4078                                 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4079                                  BIT(NL80211_STA_FLAG_ASSOCIATED)))
4080                         return -EINVAL;
4081
4082                 /* must be last in here for error handling */
4083                 params.vlan = get_vlan(info, rdev);
4084                 if (IS_ERR(params.vlan))
4085                         return PTR_ERR(params.vlan);
4086                 break;
4087         case NL80211_IFTYPE_MESH_POINT:
4088                 /* ignore uAPSD data */
4089                 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4090
4091                 /* associated is disallowed */
4092                 if (params.sta_flags_mask & BIT(NL80211_STA_FLAG_ASSOCIATED))
4093                         return -EINVAL;
4094                 /* TDLS peers cannot be added */
4095                 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
4096                     info->attrs[NL80211_ATTR_PEER_AID])
4097                         return -EINVAL;
4098                 break;
4099         case NL80211_IFTYPE_STATION:
4100         case NL80211_IFTYPE_P2P_CLIENT:
4101                 /* ignore uAPSD data */
4102                 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4103
4104                 /* these are disallowed */
4105                 if (params.sta_flags_mask &
4106                                 (BIT(NL80211_STA_FLAG_ASSOCIATED) |
4107                                  BIT(NL80211_STA_FLAG_AUTHENTICATED)))
4108                         return -EINVAL;
4109                 /* Only TDLS peers can be added */
4110                 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
4111                         return -EINVAL;
4112                 /* Can only add if TDLS ... */
4113                 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS))
4114                         return -EOPNOTSUPP;
4115                 /* ... with external setup is supported */
4116                 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP))
4117                         return -EOPNOTSUPP;
4118                 /*
4119                  * Older wpa_supplicant versions always mark the TDLS peer
4120                  * as authorized, but it shouldn't yet be.
4121                  */
4122                 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_AUTHORIZED);
4123                 break;
4124         default:
4125                 return -EOPNOTSUPP;
4126         }
4127
4128         /* be aware of params.vlan when changing code here */
4129
4130         err = rdev_add_station(rdev, dev, mac_addr, &params);
4131
4132         if (params.vlan)
4133                 dev_put(params.vlan);
4134         return err;
4135 }
4136
4137 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
4138 {
4139         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4140         struct net_device *dev = info->user_ptr[1];
4141         u8 *mac_addr = NULL;
4142
4143         if (info->attrs[NL80211_ATTR_MAC])
4144                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4145
4146         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4147             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
4148             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
4149             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4150                 return -EINVAL;
4151
4152         if (!rdev->ops->del_station)
4153                 return -EOPNOTSUPP;
4154
4155         return rdev_del_station(rdev, dev, mac_addr);
4156 }
4157
4158 static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq,
4159                                 int flags, struct net_device *dev,
4160                                 u8 *dst, u8 *next_hop,
4161                                 struct mpath_info *pinfo)
4162 {
4163         void *hdr;
4164         struct nlattr *pinfoattr;
4165
4166         hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_STATION);
4167         if (!hdr)
4168                 return -1;
4169
4170         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
4171             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
4172             nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) ||
4173             nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation))
4174                 goto nla_put_failure;
4175
4176         pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO);
4177         if (!pinfoattr)
4178                 goto nla_put_failure;
4179         if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) &&
4180             nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
4181                         pinfo->frame_qlen))
4182                 goto nla_put_failure;
4183         if (((pinfo->filled & MPATH_INFO_SN) &&
4184              nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) ||
4185             ((pinfo->filled & MPATH_INFO_METRIC) &&
4186              nla_put_u32(msg, NL80211_MPATH_INFO_METRIC,
4187                          pinfo->metric)) ||
4188             ((pinfo->filled & MPATH_INFO_EXPTIME) &&
4189              nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME,
4190                          pinfo->exptime)) ||
4191             ((pinfo->filled & MPATH_INFO_FLAGS) &&
4192              nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS,
4193                         pinfo->flags)) ||
4194             ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) &&
4195              nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
4196                          pinfo->discovery_timeout)) ||
4197             ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) &&
4198              nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
4199                         pinfo->discovery_retries)))
4200                 goto nla_put_failure;
4201
4202         nla_nest_end(msg, pinfoattr);
4203
4204         return genlmsg_end(msg, hdr);
4205
4206  nla_put_failure:
4207         genlmsg_cancel(msg, hdr);
4208         return -EMSGSIZE;
4209 }
4210
4211 static int nl80211_dump_mpath(struct sk_buff *skb,
4212                               struct netlink_callback *cb)
4213 {
4214         struct mpath_info pinfo;
4215         struct cfg80211_registered_device *dev;
4216         struct wireless_dev *wdev;
4217         u8 dst[ETH_ALEN];
4218         u8 next_hop[ETH_ALEN];
4219         int path_idx = cb->args[2];
4220         int err;
4221
4222         err = nl80211_prepare_wdev_dump(skb, cb, &dev, &wdev);
4223         if (err)
4224                 return err;
4225
4226         if (!dev->ops->dump_mpath) {
4227                 err = -EOPNOTSUPP;
4228                 goto out_err;
4229         }
4230
4231         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
4232                 err = -EOPNOTSUPP;
4233                 goto out_err;
4234         }
4235
4236         while (1) {
4237                 err = rdev_dump_mpath(dev, wdev->netdev, path_idx, dst,
4238                                       next_hop, &pinfo);
4239                 if (err == -ENOENT)
4240                         break;
4241                 if (err)
4242                         goto out_err;
4243
4244                 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
4245                                        cb->nlh->nlmsg_seq, NLM_F_MULTI,
4246                                        wdev->netdev, dst, next_hop,
4247                                        &pinfo) < 0)
4248                         goto out;
4249
4250                 path_idx++;
4251         }
4252
4253
4254  out:
4255         cb->args[2] = path_idx;
4256         err = skb->len;
4257  out_err:
4258         nl80211_finish_wdev_dump(dev);
4259         return err;
4260 }
4261
4262 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
4263 {
4264         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4265         int err;
4266         struct net_device *dev = info->user_ptr[1];
4267         struct mpath_info pinfo;
4268         struct sk_buff *msg;
4269         u8 *dst = NULL;
4270         u8 next_hop[ETH_ALEN];
4271
4272         memset(&pinfo, 0, sizeof(pinfo));
4273
4274         if (!info->attrs[NL80211_ATTR_MAC])
4275                 return -EINVAL;
4276
4277         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4278
4279         if (!rdev->ops->get_mpath)
4280                 return -EOPNOTSUPP;
4281
4282         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4283                 return -EOPNOTSUPP;
4284
4285         err = rdev_get_mpath(rdev, dev, dst, next_hop, &pinfo);
4286         if (err)
4287                 return err;
4288
4289         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4290         if (!msg)
4291                 return -ENOMEM;
4292
4293         if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
4294                                  dev, dst, next_hop, &pinfo) < 0) {
4295                 nlmsg_free(msg);
4296                 return -ENOBUFS;
4297         }
4298
4299         return genlmsg_reply(msg, info);
4300 }
4301
4302 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
4303 {
4304         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4305         struct net_device *dev = info->user_ptr[1];
4306         u8 *dst = NULL;
4307         u8 *next_hop = NULL;
4308
4309         if (!info->attrs[NL80211_ATTR_MAC])
4310                 return -EINVAL;
4311
4312         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
4313                 return -EINVAL;
4314
4315         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4316         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
4317
4318         if (!rdev->ops->change_mpath)
4319                 return -EOPNOTSUPP;
4320
4321         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4322                 return -EOPNOTSUPP;
4323
4324         return rdev_change_mpath(rdev, dev, dst, next_hop);
4325 }
4326
4327 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
4328 {
4329         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4330         struct net_device *dev = info->user_ptr[1];
4331         u8 *dst = NULL;
4332         u8 *next_hop = NULL;
4333
4334         if (!info->attrs[NL80211_ATTR_MAC])
4335                 return -EINVAL;
4336
4337         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
4338                 return -EINVAL;
4339
4340         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4341         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
4342
4343         if (!rdev->ops->add_mpath)
4344                 return -EOPNOTSUPP;
4345
4346         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4347                 return -EOPNOTSUPP;
4348
4349         return rdev_add_mpath(rdev, dev, dst, next_hop);
4350 }
4351
4352 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
4353 {
4354         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4355         struct net_device *dev = info->user_ptr[1];
4356         u8 *dst = NULL;
4357
4358         if (info->attrs[NL80211_ATTR_MAC])
4359                 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4360
4361         if (!rdev->ops->del_mpath)
4362                 return -EOPNOTSUPP;
4363
4364         return rdev_del_mpath(rdev, dev, dst);
4365 }
4366
4367 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
4368 {
4369         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4370         struct net_device *dev = info->user_ptr[1];
4371         struct bss_parameters params;
4372
4373         memset(&params, 0, sizeof(params));
4374         /* default to not changing parameters */
4375         params.use_cts_prot = -1;
4376         params.use_short_preamble = -1;
4377         params.use_short_slot_time = -1;
4378         params.ap_isolate = -1;
4379         params.ht_opmode = -1;
4380         params.p2p_ctwindow = -1;
4381         params.p2p_opp_ps = -1;
4382
4383         if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
4384                 params.use_cts_prot =
4385                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
4386         if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
4387                 params.use_short_preamble =
4388                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
4389         if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
4390                 params.use_short_slot_time =
4391                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
4392         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
4393                 params.basic_rates =
4394                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4395                 params.basic_rates_len =
4396                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4397         }
4398         if (info->attrs[NL80211_ATTR_AP_ISOLATE])
4399                 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
4400         if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
4401                 params.ht_opmode =
4402                         nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
4403
4404         if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
4405                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4406                         return -EINVAL;
4407                 params.p2p_ctwindow =
4408                         nla_get_s8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
4409                 if (params.p2p_ctwindow < 0)
4410                         return -EINVAL;
4411                 if (params.p2p_ctwindow != 0 &&
4412                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
4413                         return -EINVAL;
4414         }
4415
4416         if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
4417                 u8 tmp;
4418
4419                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4420                         return -EINVAL;
4421                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
4422                 if (tmp > 1)
4423                         return -EINVAL;
4424                 params.p2p_opp_ps = tmp;
4425                 if (params.p2p_opp_ps &&
4426                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
4427                         return -EINVAL;
4428         }
4429
4430         if (!rdev->ops->change_bss)
4431                 return -EOPNOTSUPP;
4432
4433         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4434             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4435                 return -EOPNOTSUPP;
4436
4437         return rdev_change_bss(rdev, dev, &params);
4438 }
4439
4440 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
4441         [NL80211_ATTR_REG_RULE_FLAGS]           = { .type = NLA_U32 },
4442         [NL80211_ATTR_FREQ_RANGE_START]         = { .type = NLA_U32 },
4443         [NL80211_ATTR_FREQ_RANGE_END]           = { .type = NLA_U32 },
4444         [NL80211_ATTR_FREQ_RANGE_MAX_BW]        = { .type = NLA_U32 },
4445         [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]  = { .type = NLA_U32 },
4446         [NL80211_ATTR_POWER_RULE_MAX_EIRP]      = { .type = NLA_U32 },
4447 };
4448
4449 static int parse_reg_rule(struct nlattr *tb[],
4450         struct ieee80211_reg_rule *reg_rule)
4451 {
4452         struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
4453         struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
4454
4455         if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
4456                 return -EINVAL;
4457         if (!tb[NL80211_ATTR_FREQ_RANGE_START])
4458                 return -EINVAL;
4459         if (!tb[NL80211_ATTR_FREQ_RANGE_END])
4460                 return -EINVAL;
4461         if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
4462                 return -EINVAL;
4463         if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
4464                 return -EINVAL;
4465
4466         reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
4467
4468         freq_range->start_freq_khz =
4469                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
4470         freq_range->end_freq_khz =
4471                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
4472         freq_range->max_bandwidth_khz =
4473                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
4474
4475         power_rule->max_eirp =
4476                 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
4477
4478         if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
4479                 power_rule->max_antenna_gain =
4480                         nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
4481
4482         return 0;
4483 }
4484
4485 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
4486 {
4487         int r;
4488         char *data = NULL;
4489         enum nl80211_user_reg_hint_type user_reg_hint_type;
4490
4491         /*
4492          * You should only get this when cfg80211 hasn't yet initialized
4493          * completely when built-in to the kernel right between the time
4494          * window between nl80211_init() and regulatory_init(), if that is
4495          * even possible.
4496          */
4497         if (unlikely(!rcu_access_pointer(cfg80211_regdomain)))
4498                 return -EINPROGRESS;
4499
4500         if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
4501                 return -EINVAL;
4502
4503         data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
4504
4505         if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE])
4506                 user_reg_hint_type =
4507                   nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]);
4508         else
4509                 user_reg_hint_type = NL80211_USER_REG_HINT_USER;
4510
4511         switch (user_reg_hint_type) {
4512         case NL80211_USER_REG_HINT_USER:
4513         case NL80211_USER_REG_HINT_CELL_BASE:
4514                 break;
4515         default:
4516                 return -EINVAL;
4517         }
4518
4519         r = regulatory_hint_user(data, user_reg_hint_type);
4520
4521         return r;
4522 }
4523
4524 static int nl80211_get_mesh_config(struct sk_buff *skb,
4525                                    struct genl_info *info)
4526 {
4527         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4528         struct net_device *dev = info->user_ptr[1];
4529         struct wireless_dev *wdev = dev->ieee80211_ptr;
4530         struct mesh_config cur_params;
4531         int err = 0;
4532         void *hdr;
4533         struct nlattr *pinfoattr;
4534         struct sk_buff *msg;
4535
4536         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
4537                 return -EOPNOTSUPP;
4538
4539         if (!rdev->ops->get_mesh_config)
4540                 return -EOPNOTSUPP;
4541
4542         wdev_lock(wdev);
4543         /* If not connected, get default parameters */
4544         if (!wdev->mesh_id_len)
4545                 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
4546         else
4547                 err = rdev_get_mesh_config(rdev, dev, &cur_params);
4548         wdev_unlock(wdev);
4549
4550         if (err)
4551                 return err;
4552
4553         /* Draw up a netlink message to send back */
4554         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4555         if (!msg)
4556                 return -ENOMEM;
4557         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
4558                              NL80211_CMD_GET_MESH_CONFIG);
4559         if (!hdr)
4560                 goto out;
4561         pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG);
4562         if (!pinfoattr)
4563                 goto nla_put_failure;
4564         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
4565             nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
4566                         cur_params.dot11MeshRetryTimeout) ||
4567             nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
4568                         cur_params.dot11MeshConfirmTimeout) ||
4569             nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
4570                         cur_params.dot11MeshHoldingTimeout) ||
4571             nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
4572                         cur_params.dot11MeshMaxPeerLinks) ||
4573             nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES,
4574                        cur_params.dot11MeshMaxRetries) ||
4575             nla_put_u8(msg, NL80211_MESHCONF_TTL,
4576                        cur_params.dot11MeshTTL) ||
4577             nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL,
4578                        cur_params.element_ttl) ||
4579             nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
4580                        cur_params.auto_open_plinks) ||
4581             nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
4582                         cur_params.dot11MeshNbrOffsetMaxNeighbor) ||
4583             nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
4584                        cur_params.dot11MeshHWMPmaxPREQretries) ||
4585             nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
4586                         cur_params.path_refresh_time) ||
4587             nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
4588                         cur_params.min_discovery_timeout) ||
4589             nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
4590                         cur_params.dot11MeshHWMPactivePathTimeout) ||
4591             nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
4592                         cur_params.dot11MeshHWMPpreqMinInterval) ||
4593             nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
4594                         cur_params.dot11MeshHWMPperrMinInterval) ||
4595             nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
4596                         cur_params.dot11MeshHWMPnetDiameterTraversalTime) ||
4597             nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
4598                        cur_params.dot11MeshHWMPRootMode) ||
4599             nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
4600                         cur_params.dot11MeshHWMPRannInterval) ||
4601             nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
4602                        cur_params.dot11MeshGateAnnouncementProtocol) ||
4603             nla_put_u8(msg, NL80211_MESHCONF_FORWARDING,
4604                        cur_params.dot11MeshForwarding) ||
4605             nla_put_u32(msg, NL80211_MESHCONF_RSSI_THRESHOLD,
4606                         cur_params.rssi_threshold) ||
4607             nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE,
4608                         cur_params.ht_opmode) ||
4609             nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
4610                         cur_params.dot11MeshHWMPactivePathToRootTimeout) ||
4611             nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
4612                         cur_params.dot11MeshHWMProotInterval) ||
4613             nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
4614                         cur_params.dot11MeshHWMPconfirmationInterval) ||
4615             nla_put_u32(msg, NL80211_MESHCONF_POWER_MODE,
4616                         cur_params.power_mode) ||
4617             nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW,
4618                         cur_params.dot11MeshAwakeWindowDuration) ||
4619             nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT,
4620                         cur_params.plink_timeout))
4621                 goto nla_put_failure;
4622         nla_nest_end(msg, pinfoattr);
4623         genlmsg_end(msg, hdr);
4624         return genlmsg_reply(msg, info);
4625
4626  nla_put_failure:
4627         genlmsg_cancel(msg, hdr);
4628  out:
4629         nlmsg_free(msg);
4630         return -ENOBUFS;
4631 }
4632
4633 static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
4634         [NL80211_MESHCONF_RETRY_TIMEOUT] = { .type = NLA_U16 },
4635         [NL80211_MESHCONF_CONFIRM_TIMEOUT] = { .type = NLA_U16 },
4636         [NL80211_MESHCONF_HOLDING_TIMEOUT] = { .type = NLA_U16 },
4637         [NL80211_MESHCONF_MAX_PEER_LINKS] = { .type = NLA_U16 },
4638         [NL80211_MESHCONF_MAX_RETRIES] = { .type = NLA_U8 },
4639         [NL80211_MESHCONF_TTL] = { .type = NLA_U8 },
4640         [NL80211_MESHCONF_ELEMENT_TTL] = { .type = NLA_U8 },
4641         [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = { .type = NLA_U8 },
4642         [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] = { .type = NLA_U32 },
4643         [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
4644         [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
4645         [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = { .type = NLA_U16 },
4646         [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
4647         [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 },
4648         [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] = { .type = NLA_U16 },
4649         [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 },
4650         [NL80211_MESHCONF_HWMP_ROOTMODE] = { .type = NLA_U8 },
4651         [NL80211_MESHCONF_HWMP_RANN_INTERVAL] = { .type = NLA_U16 },
4652         [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = { .type = NLA_U8 },
4653         [NL80211_MESHCONF_FORWARDING] = { .type = NLA_U8 },
4654         [NL80211_MESHCONF_RSSI_THRESHOLD] = { .type = NLA_U32 },
4655         [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 },
4656         [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 },
4657         [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] = { .type = NLA_U16 },
4658         [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] = { .type = NLA_U16 },
4659         [NL80211_MESHCONF_POWER_MODE] = { .type = NLA_U32 },
4660         [NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 },
4661         [NL80211_MESHCONF_PLINK_TIMEOUT] = { .type = NLA_U32 },
4662 };
4663
4664 static const struct nla_policy
4665         nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
4666         [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 },
4667         [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
4668         [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
4669         [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
4670         [NL80211_MESH_SETUP_AUTH_PROTOCOL] = { .type = NLA_U8 },
4671         [NL80211_MESH_SETUP_USERSPACE_MPM] = { .type = NLA_FLAG },
4672         [NL80211_MESH_SETUP_IE] = { .type = NLA_BINARY,
4673                                     .len = IEEE80211_MAX_DATA_LEN },
4674         [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
4675 };
4676
4677 static int nl80211_parse_mesh_config(struct genl_info *info,
4678                                      struct mesh_config *cfg,
4679                                      u32 *mask_out)
4680 {
4681         struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
4682         u32 mask = 0;
4683
4684 #define FILL_IN_MESH_PARAM_IF_SET(tb, cfg, param, min, max, mask, attr, fn) \
4685 do {                                                                        \
4686         if (tb[attr]) {                                                     \
4687                 if (fn(tb[attr]) < min || fn(tb[attr]) > max)               \
4688                         return -EINVAL;                                     \
4689                 cfg->param = fn(tb[attr]);                                  \
4690                 mask |= (1 << (attr - 1));                                  \
4691         }                                                                   \
4692 } while (0)
4693
4694
4695         if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
4696                 return -EINVAL;
4697         if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX,
4698                              info->attrs[NL80211_ATTR_MESH_CONFIG],
4699                              nl80211_meshconf_params_policy))
4700                 return -EINVAL;
4701
4702         /* This makes sure that there aren't more than 32 mesh config
4703          * parameters (otherwise our bitfield scheme would not work.) */
4704         BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
4705
4706         /* Fill in the params struct */
4707         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, 1, 255,
4708                                   mask, NL80211_MESHCONF_RETRY_TIMEOUT,
4709                                   nla_get_u16);
4710         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, 1, 255,
4711                                   mask, NL80211_MESHCONF_CONFIRM_TIMEOUT,
4712                                   nla_get_u16);
4713         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, 1, 255,
4714                                   mask, NL80211_MESHCONF_HOLDING_TIMEOUT,
4715                                   nla_get_u16);
4716         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, 0, 255,
4717                                   mask, NL80211_MESHCONF_MAX_PEER_LINKS,
4718                                   nla_get_u16);
4719         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, 0, 16,
4720                                   mask, NL80211_MESHCONF_MAX_RETRIES,
4721                                   nla_get_u8);
4722         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, 1, 255,
4723                                   mask, NL80211_MESHCONF_TTL, nla_get_u8);
4724         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl, 1, 255,
4725                                   mask, NL80211_MESHCONF_ELEMENT_TTL,
4726                                   nla_get_u8);
4727         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, 0, 1,
4728                                   mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
4729                                   nla_get_u8);
4730         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor,
4731                                   1, 255, mask,
4732                                   NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
4733                                   nla_get_u32);
4734         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, 0, 255,
4735                                   mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
4736                                   nla_get_u8);
4737         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, 1, 65535,
4738                                   mask, NL80211_MESHCONF_PATH_REFRESH_TIME,
4739                                   nla_get_u32);
4740         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, 1, 65535,
4741                                   mask, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
4742                                   nla_get_u16);
4743         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
4744                                   1, 65535, mask,
4745                                   NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
4746                                   nla_get_u32);
4747         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval,
4748                                   1, 65535, mask,
4749                                   NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
4750                                   nla_get_u16);
4751         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval,
4752                                   1, 65535, mask,
4753                                   NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
4754                                   nla_get_u16);
4755         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
4756                                   dot11MeshHWMPnetDiameterTraversalTime,
4757                                   1, 65535, mask,
4758                                   NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
4759                                   nla_get_u16);
4760         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, 0, 4,
4761                                   mask, NL80211_MESHCONF_HWMP_ROOTMODE,
4762                                   nla_get_u8);
4763         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, 1, 65535,
4764                                   mask, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
4765                                   nla_get_u16);
4766         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
4767                                   dot11MeshGateAnnouncementProtocol, 0, 1,
4768                                   mask, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
4769                                   nla_get_u8);
4770         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding, 0, 1,
4771                                   mask, NL80211_MESHCONF_FORWARDING,
4772                                   nla_get_u8);
4773         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold, 1, 255,
4774                                   mask, NL80211_MESHCONF_RSSI_THRESHOLD,
4775                                   nla_get_u32);
4776         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, ht_opmode, 0, 16,
4777                                   mask, NL80211_MESHCONF_HT_OPMODE,
4778                                   nla_get_u16);
4779         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathToRootTimeout,
4780                                   1, 65535, mask,
4781                                   NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
4782                                   nla_get_u32);
4783         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval, 1, 65535,
4784                                   mask, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
4785                                   nla_get_u16);
4786         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
4787                                   dot11MeshHWMPconfirmationInterval,
4788                                   1, 65535, mask,
4789                                   NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
4790                                   nla_get_u16);
4791         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, power_mode,
4792                                   NL80211_MESH_POWER_ACTIVE,
4793                                   NL80211_MESH_POWER_MAX,
4794                                   mask, NL80211_MESHCONF_POWER_MODE,
4795                                   nla_get_u32);
4796         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration,
4797                                   0, 65535, mask,
4798                                   NL80211_MESHCONF_AWAKE_WINDOW, nla_get_u16);
4799         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, plink_timeout, 1, 0xffffffff,
4800                                   mask, NL80211_MESHCONF_PLINK_TIMEOUT,
4801                                   nla_get_u32);
4802         if (mask_out)
4803                 *mask_out = mask;
4804
4805         return 0;
4806
4807 #undef FILL_IN_MESH_PARAM_IF_SET
4808 }
4809
4810 static int nl80211_parse_mesh_setup(struct genl_info *info,
4811                                      struct mesh_setup *setup)
4812 {
4813         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4814         struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
4815
4816         if (!info->attrs[NL80211_ATTR_MESH_SETUP])
4817                 return -EINVAL;
4818         if (nla_parse_nested(tb, NL80211_MESH_SETUP_ATTR_MAX,
4819                              info->attrs[NL80211_ATTR_MESH_SETUP],
4820                              nl80211_mesh_setup_params_policy))
4821                 return -EINVAL;
4822
4823         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])
4824                 setup->sync_method =
4825                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ?
4826                  IEEE80211_SYNC_METHOD_VENDOR :
4827                  IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET;
4828
4829         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
4830                 setup->path_sel_proto =
4831                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
4832                  IEEE80211_PATH_PROTOCOL_VENDOR :
4833                  IEEE80211_PATH_PROTOCOL_HWMP;
4834
4835         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
4836                 setup->path_metric =
4837                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
4838                  IEEE80211_PATH_METRIC_VENDOR :
4839                  IEEE80211_PATH_METRIC_AIRTIME;
4840
4841
4842         if (tb[NL80211_MESH_SETUP_IE]) {
4843                 struct nlattr *ieattr =
4844                         tb[NL80211_MESH_SETUP_IE];
4845                 if (!is_valid_ie_attr(ieattr))
4846                         return -EINVAL;
4847                 setup->ie = nla_data(ieattr);
4848                 setup->ie_len = nla_len(ieattr);
4849         }
4850         if (tb[NL80211_MESH_SETUP_USERSPACE_MPM] &&
4851             !(rdev->wiphy.features & NL80211_FEATURE_USERSPACE_MPM))
4852                 return -EINVAL;
4853         setup->user_mpm = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_MPM]);
4854         setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
4855         setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
4856         if (setup->is_secure)
4857                 setup->user_mpm = true;
4858
4859         if (tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]) {
4860                 if (!setup->user_mpm)
4861                         return -EINVAL;
4862                 setup->auth_id =
4863                         nla_get_u8(tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]);
4864         }
4865
4866         return 0;
4867 }
4868
4869 static int nl80211_update_mesh_config(struct sk_buff *skb,
4870                                       struct genl_info *info)
4871 {
4872         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4873         struct net_device *dev = info->user_ptr[1];
4874         struct wireless_dev *wdev = dev->ieee80211_ptr;
4875         struct mesh_config cfg;
4876         u32 mask;
4877         int err;
4878
4879         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
4880                 return -EOPNOTSUPP;
4881
4882         if (!rdev->ops->update_mesh_config)
4883                 return -EOPNOTSUPP;
4884
4885         err = nl80211_parse_mesh_config(info, &cfg, &mask);
4886         if (err)
4887                 return err;
4888
4889         wdev_lock(wdev);
4890         if (!wdev->mesh_id_len)
4891                 err = -ENOLINK;
4892
4893         if (!err)
4894                 err = rdev_update_mesh_config(rdev, dev, mask, &cfg);
4895
4896         wdev_unlock(wdev);
4897
4898         return err;
4899 }
4900
4901 static int nl80211_get_reg(struct sk_buff *skb, struct genl_info *info)
4902 {
4903         const struct ieee80211_regdomain *regdom;
4904         struct sk_buff *msg;
4905         void *hdr = NULL;
4906         struct nlattr *nl_reg_rules;
4907         unsigned int i;
4908
4909         if (!cfg80211_regdomain)
4910                 return -EINVAL;
4911
4912         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4913         if (!msg)
4914                 return -ENOBUFS;
4915
4916         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
4917                              NL80211_CMD_GET_REG);
4918         if (!hdr)
4919                 goto put_failure;
4920
4921         if (reg_last_request_cell_base() &&
4922             nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
4923                         NL80211_USER_REG_HINT_CELL_BASE))
4924                 goto nla_put_failure;
4925
4926         rcu_read_lock();
4927         regdom = rcu_dereference(cfg80211_regdomain);
4928
4929         if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, regdom->alpha2) ||
4930             (regdom->dfs_region &&
4931              nla_put_u8(msg, NL80211_ATTR_DFS_REGION, regdom->dfs_region)))
4932                 goto nla_put_failure_rcu;
4933
4934         nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES);
4935         if (!nl_reg_rules)
4936                 goto nla_put_failure_rcu;
4937
4938         for (i = 0; i < regdom->n_reg_rules; i++) {
4939                 struct nlattr *nl_reg_rule;
4940                 const struct ieee80211_reg_rule *reg_rule;
4941                 const struct ieee80211_freq_range *freq_range;
4942                 const struct ieee80211_power_rule *power_rule;
4943
4944                 reg_rule = &regdom->reg_rules[i];
4945                 freq_range = &reg_rule->freq_range;
4946                 power_rule = &reg_rule->power_rule;
4947
4948                 nl_reg_rule = nla_nest_start(msg, i);
4949                 if (!nl_reg_rule)
4950                         goto nla_put_failure_rcu;
4951
4952                 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS,
4953                                 reg_rule->flags) ||
4954                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START,
4955                                 freq_range->start_freq_khz) ||
4956                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END,
4957                                 freq_range->end_freq_khz) ||
4958                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
4959                                 freq_range->max_bandwidth_khz) ||
4960                     nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
4961                                 power_rule->max_antenna_gain) ||
4962                     nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
4963                                 power_rule->max_eirp))
4964                         goto nla_put_failure_rcu;
4965
4966                 nla_nest_end(msg, nl_reg_rule);
4967         }
4968         rcu_read_unlock();
4969
4970         nla_nest_end(msg, nl_reg_rules);
4971
4972         genlmsg_end(msg, hdr);
4973         return genlmsg_reply(msg, info);
4974
4975 nla_put_failure_rcu:
4976         rcu_read_unlock();
4977 nla_put_failure:
4978         genlmsg_cancel(msg, hdr);
4979 put_failure:
4980         nlmsg_free(msg);
4981         return -EMSGSIZE;
4982 }
4983
4984 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
4985 {
4986         struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
4987         struct nlattr *nl_reg_rule;
4988         char *alpha2 = NULL;
4989         int rem_reg_rules = 0, r = 0;
4990         u32 num_rules = 0, rule_idx = 0, size_of_regd;
4991         u8 dfs_region = 0;
4992         struct ieee80211_regdomain *rd = NULL;
4993
4994         if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
4995                 return -EINVAL;
4996
4997         if (!info->attrs[NL80211_ATTR_REG_RULES])
4998                 return -EINVAL;
4999
5000         alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
5001
5002         if (info->attrs[NL80211_ATTR_DFS_REGION])
5003                 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]);
5004
5005         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
5006                             rem_reg_rules) {
5007                 num_rules++;
5008                 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
5009                         return -EINVAL;
5010         }
5011
5012         size_of_regd = sizeof(struct ieee80211_regdomain) +
5013                        num_rules * sizeof(struct ieee80211_reg_rule);
5014
5015         rd = kzalloc(size_of_regd, GFP_KERNEL);
5016         if (!rd)
5017                 return -ENOMEM;
5018
5019         rd->n_reg_rules = num_rules;
5020         rd->alpha2[0] = alpha2[0];
5021         rd->alpha2[1] = alpha2[1];
5022
5023         /*
5024          * Disable DFS master mode if the DFS region was
5025          * not supported or known on this kernel.
5026          */
5027         if (reg_supported_dfs_region(dfs_region))
5028                 rd->dfs_region = dfs_region;
5029
5030         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
5031                             rem_reg_rules) {
5032                 nla_parse(tb, NL80211_REG_RULE_ATTR_MAX,
5033                           nla_data(nl_reg_rule), nla_len(nl_reg_rule),
5034                           reg_rule_policy);
5035                 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
5036                 if (r)
5037                         goto bad_reg;
5038
5039                 rule_idx++;
5040
5041                 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
5042                         r = -EINVAL;
5043                         goto bad_reg;
5044                 }
5045         }
5046
5047         r = set_regdom(rd);
5048         /* set_regdom took ownership */
5049         rd = NULL;
5050
5051  bad_reg:
5052         kfree(rd);
5053         return r;
5054 }
5055
5056 static int validate_scan_freqs(struct nlattr *freqs)
5057 {
5058         struct nlattr *attr1, *attr2;
5059         int n_channels = 0, tmp1, tmp2;
5060
5061         nla_for_each_nested(attr1, freqs, tmp1) {
5062                 n_channels++;
5063                 /*
5064                  * Some hardware has a limited channel list for
5065                  * scanning, and it is pretty much nonsensical
5066                  * to scan for a channel twice, so disallow that
5067                  * and don't require drivers to check that the
5068                  * channel list they get isn't longer than what
5069                  * they can scan, as long as they can scan all
5070                  * the channels they registered at once.
5071                  */
5072                 nla_for_each_nested(attr2, freqs, tmp2)
5073                         if (attr1 != attr2 &&
5074                             nla_get_u32(attr1) == nla_get_u32(attr2))
5075                                 return 0;
5076         }
5077
5078         return n_channels;
5079 }
5080
5081 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
5082 {
5083         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5084         struct wireless_dev *wdev = info->user_ptr[1];
5085         struct cfg80211_scan_request *request;
5086         struct nlattr *attr;
5087         struct wiphy *wiphy;
5088         int err, tmp, n_ssids = 0, n_channels, i;
5089         size_t ie_len;
5090
5091         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
5092                 return -EINVAL;
5093
5094         wiphy = &rdev->wiphy;
5095
5096         if (!rdev->ops->scan)
5097                 return -EOPNOTSUPP;
5098
5099         if (rdev->scan_req) {
5100                 err = -EBUSY;
5101                 goto unlock;
5102         }
5103
5104         if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5105                 n_channels = validate_scan_freqs(
5106                                 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
5107                 if (!n_channels) {
5108                         err = -EINVAL;
5109                         goto unlock;
5110                 }
5111         } else {
5112                 enum ieee80211_band band;
5113                 n_channels = 0;
5114
5115                 for (band = 0; band < IEEE80211_NUM_BANDS; band++)
5116                         if (wiphy->bands[band])
5117                                 n_channels += wiphy->bands[band]->n_channels;
5118         }
5119
5120         if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
5121                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
5122                         n_ssids++;
5123
5124         if (n_ssids > wiphy->max_scan_ssids) {
5125                 err = -EINVAL;
5126                 goto unlock;
5127         }
5128
5129         if (info->attrs[NL80211_ATTR_IE])
5130                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5131         else
5132                 ie_len = 0;
5133
5134         if (ie_len > wiphy->max_scan_ie_len) {
5135                 err = -EINVAL;
5136                 goto unlock;
5137         }
5138
5139         request = kzalloc(sizeof(*request)
5140                         + sizeof(*request->ssids) * n_ssids
5141                         + sizeof(*request->channels) * n_channels
5142                         + ie_len, GFP_KERNEL);
5143         if (!request) {
5144                 err = -ENOMEM;
5145                 goto unlock;
5146         }
5147
5148         if (n_ssids)
5149                 request->ssids = (void *)&request->channels[n_channels];
5150         request->n_ssids = n_ssids;
5151         if (ie_len) {
5152                 if (request->ssids)
5153                         request->ie = (void *)(request->ssids + n_ssids);
5154                 else
5155                         request->ie = (void *)(request->channels + n_channels);
5156         }
5157
5158         i = 0;
5159         if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5160                 /* user specified, bail out if channel not found */
5161                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) {
5162                         struct ieee80211_channel *chan;
5163
5164                         chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
5165
5166                         if (!chan) {
5167                                 err = -EINVAL;
5168                                 goto out_free;
5169                         }
5170
5171                         /* ignore disabled channels */
5172                         if (chan->flags & IEEE80211_CHAN_DISABLED)
5173                                 continue;
5174
5175                         request->channels[i] = chan;
5176                         i++;
5177                 }
5178         } else {
5179                 enum ieee80211_band band;
5180
5181                 /* all channels */
5182                 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
5183                         int j;
5184                         if (!wiphy->bands[band])
5185                                 continue;
5186                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
5187                                 struct ieee80211_channel *chan;
5188
5189                                 chan = &wiphy->bands[band]->channels[j];
5190
5191                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
5192                                         continue;
5193
5194                                 request->channels[i] = chan;
5195                                 i++;
5196                         }
5197                 }
5198         }
5199
5200         if (!i) {
5201                 err = -EINVAL;
5202                 goto out_free;
5203         }
5204
5205         request->n_channels = i;
5206
5207         i = 0;
5208         if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
5209                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
5210                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
5211                                 err = -EINVAL;
5212                                 goto out_free;
5213                         }
5214                         request->ssids[i].ssid_len = nla_len(attr);
5215                         memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
5216                         i++;
5217                 }
5218         }
5219
5220         if (info->attrs[NL80211_ATTR_IE]) {
5221                 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5222                 memcpy((void *)request->ie,
5223                        nla_data(info->attrs[NL80211_ATTR_IE]),
5224                        request->ie_len);
5225         }
5226
5227         for (i = 0; i < IEEE80211_NUM_BANDS; i++)
5228                 if (wiphy->bands[i])
5229                         request->rates[i] =
5230                                 (1 << wiphy->bands[i]->n_bitrates) - 1;
5231
5232         if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
5233                 nla_for_each_nested(attr,
5234                                     info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
5235                                     tmp) {
5236                         enum ieee80211_band band = nla_type(attr);
5237
5238                         if (band < 0 || band >= IEEE80211_NUM_BANDS) {
5239                                 err = -EINVAL;
5240                                 goto out_free;
5241                         }
5242                         err = ieee80211_get_ratemask(wiphy->bands[band],
5243                                                      nla_data(attr),
5244                                                      nla_len(attr),
5245                                                      &request->rates[band]);
5246                         if (err)
5247                                 goto out_free;
5248                 }
5249         }
5250
5251         if (info->attrs[NL80211_ATTR_SCAN_FLAGS]) {
5252                 request->flags = nla_get_u32(
5253                         info->attrs[NL80211_ATTR_SCAN_FLAGS]);
5254                 if (((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
5255                      !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) ||
5256                     ((request->flags & NL80211_SCAN_FLAG_FLUSH) &&
5257                      !(wiphy->features & NL80211_FEATURE_SCAN_FLUSH))) {
5258                         err = -EOPNOTSUPP;
5259                         goto out_free;
5260                 }
5261         }
5262
5263         request->no_cck =
5264                 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
5265
5266         request->wdev = wdev;
5267         request->wiphy = &rdev->wiphy;
5268         request->scan_start = jiffies;
5269
5270         rdev->scan_req = request;
5271         err = rdev_scan(rdev, request);
5272
5273         if (!err) {
5274                 nl80211_send_scan_start(rdev, wdev);
5275                 if (wdev->netdev)
5276                         dev_hold(wdev->netdev);
5277         } else {
5278  out_free:
5279                 rdev->scan_req = NULL;
5280                 kfree(request);
5281         }
5282
5283  unlock:
5284         return err;
5285 }
5286
5287 static int nl80211_start_sched_scan(struct sk_buff *skb,
5288                                     struct genl_info *info)
5289 {
5290         struct cfg80211_sched_scan_request *request;
5291         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5292         struct net_device *dev = info->user_ptr[1];
5293         struct nlattr *attr;
5294         struct wiphy *wiphy;
5295         int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i;
5296         u32 interval;
5297         enum ieee80211_band band;
5298         size_t ie_len;
5299         struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
5300
5301         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
5302             !rdev->ops->sched_scan_start)
5303                 return -EOPNOTSUPP;
5304
5305         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
5306                 return -EINVAL;
5307
5308         if (!info->attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
5309                 return -EINVAL;
5310
5311         interval = nla_get_u32(info->attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
5312         if (interval == 0)
5313                 return -EINVAL;
5314
5315         wiphy = &rdev->wiphy;
5316
5317         if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5318                 n_channels = validate_scan_freqs(
5319                                 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
5320                 if (!n_channels)
5321                         return -EINVAL;
5322         } else {
5323                 n_channels = 0;
5324
5325                 for (band = 0; band < IEEE80211_NUM_BANDS; band++)
5326                         if (wiphy->bands[band])
5327                                 n_channels += wiphy->bands[band]->n_channels;
5328         }
5329
5330         if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
5331                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS],
5332                                     tmp)
5333                         n_ssids++;
5334
5335         if (n_ssids > wiphy->max_sched_scan_ssids)
5336                 return -EINVAL;
5337
5338         if (info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH])
5339                 nla_for_each_nested(attr,
5340                                     info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
5341                                     tmp)
5342                         n_match_sets++;
5343
5344         if (n_match_sets > wiphy->max_match_sets)
5345                 return -EINVAL;
5346
5347         if (info->attrs[NL80211_ATTR_IE])
5348                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5349         else
5350                 ie_len = 0;
5351
5352         if (ie_len > wiphy->max_sched_scan_ie_len)
5353                 return -EINVAL;
5354
5355         if (rdev->sched_scan_req) {
5356                 err = -EINPROGRESS;
5357                 goto out;
5358         }
5359
5360         request = kzalloc(sizeof(*request)
5361                         + sizeof(*request->ssids) * n_ssids
5362                         + sizeof(*request->match_sets) * n_match_sets
5363                         + sizeof(*request->channels) * n_channels
5364                         + ie_len, GFP_KERNEL);
5365         if (!request) {
5366                 err = -ENOMEM;
5367                 goto out;
5368         }
5369
5370         if (n_ssids)
5371                 request->ssids = (void *)&request->channels[n_channels];
5372         request->n_ssids = n_ssids;
5373         if (ie_len) {
5374                 if (request->ssids)
5375                         request->ie = (void *)(request->ssids + n_ssids);
5376                 else
5377                         request->ie = (void *)(request->channels + n_channels);
5378         }
5379
5380         if (n_match_sets) {
5381                 if (request->ie)
5382                         request->match_sets = (void *)(request->ie + ie_len);
5383                 else if (request->ssids)
5384                         request->match_sets =
5385                                 (void *)(request->ssids + n_ssids);
5386                 else
5387                         request->match_sets =
5388                                 (void *)(request->channels + n_channels);
5389         }
5390         request->n_match_sets = n_match_sets;
5391
5392         i = 0;
5393         if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5394                 /* user specified, bail out if channel not found */
5395                 nla_for_each_nested(attr,
5396                                     info->attrs[NL80211_ATTR_SCAN_FREQUENCIES],
5397                                     tmp) {
5398                         struct ieee80211_channel *chan;
5399
5400                         chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
5401
5402                         if (!chan) {
5403                                 err = -EINVAL;
5404                                 goto out_free;
5405                         }
5406
5407                         /* ignore disabled channels */
5408                         if (chan->flags & IEEE80211_CHAN_DISABLED)
5409                                 continue;
5410
5411                         request->channels[i] = chan;
5412                         i++;
5413                 }
5414         } else {
5415                 /* all channels */
5416                 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
5417                         int j;
5418                         if (!wiphy->bands[band])
5419                                 continue;
5420                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
5421                                 struct ieee80211_channel *chan;
5422
5423                                 chan = &wiphy->bands[band]->channels[j];
5424
5425                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
5426                                         continue;
5427
5428                                 request->channels[i] = chan;
5429                                 i++;
5430                         }
5431                 }
5432         }
5433
5434         if (!i) {
5435                 err = -EINVAL;
5436                 goto out_free;
5437         }
5438
5439         request->n_channels = i;
5440
5441         i = 0;
5442         if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
5443                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS],
5444                                     tmp) {
5445                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
5446                                 err = -EINVAL;
5447                                 goto out_free;
5448                         }
5449                         request->ssids[i].ssid_len = nla_len(attr);
5450                         memcpy(request->ssids[i].ssid, nla_data(attr),
5451                                nla_len(attr));
5452                         i++;
5453                 }
5454         }
5455
5456         i = 0;
5457         if (info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
5458                 nla_for_each_nested(attr,
5459                                     info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
5460                                     tmp) {
5461                         struct nlattr *ssid, *rssi;
5462
5463                         nla_parse(tb, NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
5464                                   nla_data(attr), nla_len(attr),
5465                                   nl80211_match_policy);
5466                         ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID];
5467                         if (ssid) {
5468                                 if (nla_len(ssid) > IEEE80211_MAX_SSID_LEN) {
5469                                         err = -EINVAL;
5470                                         goto out_free;
5471                                 }
5472                                 memcpy(request->match_sets[i].ssid.ssid,
5473                                        nla_data(ssid), nla_len(ssid));
5474                                 request->match_sets[i].ssid.ssid_len =
5475                                         nla_len(ssid);
5476                         }
5477                         rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
5478                         if (rssi)
5479                                 request->rssi_thold = nla_get_u32(rssi);
5480                         else
5481                                 request->rssi_thold =
5482                                                    NL80211_SCAN_RSSI_THOLD_OFF;
5483                         i++;
5484                 }
5485         }
5486
5487         if (info->attrs[NL80211_ATTR_IE]) {
5488                 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5489                 memcpy((void *)request->ie,
5490                        nla_data(info->attrs[NL80211_ATTR_IE]),
5491                        request->ie_len);
5492         }
5493
5494         if (info->attrs[NL80211_ATTR_SCAN_FLAGS]) {
5495                 request->flags = nla_get_u32(
5496                         info->attrs[NL80211_ATTR_SCAN_FLAGS]);
5497                 if (((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
5498                      !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) ||
5499                     ((request->flags & NL80211_SCAN_FLAG_FLUSH) &&
5500                      !(wiphy->features & NL80211_FEATURE_SCAN_FLUSH))) {
5501                         err = -EOPNOTSUPP;
5502                         goto out_free;
5503                 }
5504         }
5505
5506         request->dev = dev;
5507         request->wiphy = &rdev->wiphy;
5508         request->interval = interval;
5509         request->scan_start = jiffies;
5510
5511         err = rdev_sched_scan_start(rdev, dev, request);
5512         if (!err) {
5513                 rdev->sched_scan_req = request;
5514                 nl80211_send_sched_scan(rdev, dev,
5515                                         NL80211_CMD_START_SCHED_SCAN);
5516                 goto out;
5517         }
5518
5519 out_free:
5520         kfree(request);
5521 out:
5522         return err;
5523 }
5524
5525 static int nl80211_stop_sched_scan(struct sk_buff *skb,
5526                                    struct genl_info *info)
5527 {
5528         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5529
5530         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
5531             !rdev->ops->sched_scan_stop)
5532                 return -EOPNOTSUPP;
5533
5534         return __cfg80211_stop_sched_scan(rdev, false);
5535 }
5536
5537 static int nl80211_start_radar_detection(struct sk_buff *skb,
5538                                          struct genl_info *info)
5539 {
5540         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5541         struct net_device *dev = info->user_ptr[1];
5542         struct wireless_dev *wdev = dev->ieee80211_ptr;
5543         struct cfg80211_chan_def chandef;
5544         int err;
5545
5546         err = nl80211_parse_chandef(rdev, info, &chandef);
5547         if (err)
5548                 return err;
5549
5550         if (wdev->cac_started)
5551                 return -EBUSY;
5552
5553         err = cfg80211_chandef_dfs_required(wdev->wiphy, &chandef);
5554         if (err < 0)
5555                 return err;
5556
5557         if (err == 0)
5558                 return -EINVAL;
5559
5560         if (chandef.chan->dfs_state != NL80211_DFS_USABLE)
5561                 return -EINVAL;
5562
5563         if (!rdev->ops->start_radar_detection)
5564                 return -EOPNOTSUPP;
5565
5566         err = cfg80211_can_use_iftype_chan(rdev, wdev, wdev->iftype,
5567                                            chandef.chan, CHAN_MODE_SHARED,
5568                                            BIT(chandef.width));
5569         if (err)
5570                 return err;
5571
5572         err = rdev->ops->start_radar_detection(&rdev->wiphy, dev, &chandef);
5573         if (!err) {
5574                 wdev->channel = chandef.chan;
5575                 wdev->cac_started = true;
5576                 wdev->cac_start_time = jiffies;
5577         }
5578         return err;
5579 }
5580
5581 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
5582                             u32 seq, int flags,
5583                             struct cfg80211_registered_device *rdev,
5584                             struct wireless_dev *wdev,
5585                             struct cfg80211_internal_bss *intbss)
5586 {
5587         struct cfg80211_bss *res = &intbss->pub;
5588         const struct cfg80211_bss_ies *ies;
5589         void *hdr;
5590         struct nlattr *bss;
5591         bool tsf = false;
5592
5593         ASSERT_WDEV_LOCK(wdev);
5594
5595         hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
5596                              NL80211_CMD_NEW_SCAN_RESULTS);
5597         if (!hdr)
5598                 return -1;
5599
5600         genl_dump_check_consistent(cb, hdr, &nl80211_fam);
5601
5602         if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation))
5603                 goto nla_put_failure;
5604         if (wdev->netdev &&
5605             nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex))
5606                 goto nla_put_failure;
5607         if (nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
5608                 goto nla_put_failure;
5609
5610         bss = nla_nest_start(msg, NL80211_ATTR_BSS);
5611         if (!bss)
5612                 goto nla_put_failure;
5613         if ((!is_zero_ether_addr(res->bssid) &&
5614              nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid)))
5615                 goto nla_put_failure;
5616
5617         rcu_read_lock();
5618         ies = rcu_dereference(res->ies);
5619         if (ies) {
5620                 if (nla_put_u64(msg, NL80211_BSS_TSF, ies->tsf))
5621                         goto fail_unlock_rcu;
5622                 tsf = true;
5623                 if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS,
5624                                         ies->len, ies->data))
5625                         goto fail_unlock_rcu;
5626         }
5627         ies = rcu_dereference(res->beacon_ies);
5628         if (ies) {
5629                 if (!tsf && nla_put_u64(msg, NL80211_BSS_TSF, ies->tsf))
5630                         goto fail_unlock_rcu;
5631                 if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES,
5632                                         ies->len, ies->data))
5633                         goto fail_unlock_rcu;
5634         }
5635         rcu_read_unlock();
5636
5637         if (res->beacon_interval &&
5638             nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval))
5639                 goto nla_put_failure;
5640         if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) ||
5641             nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) ||
5642             nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO,
5643                         jiffies_to_msecs(jiffies - intbss->ts)))
5644                 goto nla_put_failure;
5645
5646         switch (rdev->wiphy.signal_type) {
5647         case CFG80211_SIGNAL_TYPE_MBM:
5648                 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal))
5649                         goto nla_put_failure;
5650                 break;
5651         case CFG80211_SIGNAL_TYPE_UNSPEC:
5652                 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal))
5653                         goto nla_put_failure;
5654                 break;
5655         default:
5656                 break;
5657         }
5658
5659         switch (wdev->iftype) {
5660         case NL80211_IFTYPE_P2P_CLIENT:
5661         case NL80211_IFTYPE_STATION:
5662                 if (intbss == wdev->current_bss &&
5663                     nla_put_u32(msg, NL80211_BSS_STATUS,
5664                                 NL80211_BSS_STATUS_ASSOCIATED))
5665                         goto nla_put_failure;
5666                 break;
5667         case NL80211_IFTYPE_ADHOC:
5668                 if (intbss == wdev->current_bss &&
5669                     nla_put_u32(msg, NL80211_BSS_STATUS,
5670                                 NL80211_BSS_STATUS_IBSS_JOINED))
5671                         goto nla_put_failure;
5672                 break;
5673         default:
5674                 break;
5675         }
5676
5677         nla_nest_end(msg, bss);
5678
5679         return genlmsg_end(msg, hdr);
5680
5681  fail_unlock_rcu:
5682         rcu_read_unlock();
5683  nla_put_failure:
5684         genlmsg_cancel(msg, hdr);
5685         return -EMSGSIZE;
5686 }
5687
5688 static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb)
5689 {
5690         struct cfg80211_registered_device *rdev;
5691         struct cfg80211_internal_bss *scan;
5692         struct wireless_dev *wdev;
5693         int start = cb->args[2], idx = 0;
5694         int err;
5695
5696         err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
5697         if (err)
5698                 return err;
5699
5700         wdev_lock(wdev);
5701         spin_lock_bh(&rdev->bss_lock);
5702         cfg80211_bss_expire(rdev);
5703
5704         cb->seq = rdev->bss_generation;
5705
5706         list_for_each_entry(scan, &rdev->bss_list, list) {
5707                 if (++idx <= start)
5708                         continue;
5709                 if (nl80211_send_bss(skb, cb,
5710                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
5711                                 rdev, wdev, scan) < 0) {
5712                         idx--;
5713                         break;
5714                 }
5715         }
5716
5717         spin_unlock_bh(&rdev->bss_lock);
5718         wdev_unlock(wdev);
5719
5720         cb->args[2] = idx;
5721         nl80211_finish_wdev_dump(rdev);
5722
5723         return skb->len;
5724 }
5725
5726 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq,
5727                                 int flags, struct net_device *dev,
5728                                 struct survey_info *survey)
5729 {
5730         void *hdr;
5731         struct nlattr *infoattr;
5732
5733         hdr = nl80211hdr_put(msg, portid, seq, flags,
5734                              NL80211_CMD_NEW_SURVEY_RESULTS);
5735         if (!hdr)
5736                 return -ENOMEM;
5737
5738         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
5739                 goto nla_put_failure;
5740
5741         infoattr = nla_nest_start(msg, NL80211_ATTR_SURVEY_INFO);
5742         if (!infoattr)
5743                 goto nla_put_failure;
5744
5745         if (nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY,
5746                         survey->channel->center_freq))
5747                 goto nla_put_failure;
5748
5749         if ((survey->filled & SURVEY_INFO_NOISE_DBM) &&
5750             nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise))
5751                 goto nla_put_failure;
5752         if ((survey->filled & SURVEY_INFO_IN_USE) &&
5753             nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE))
5754                 goto nla_put_failure;
5755         if ((survey->filled & SURVEY_INFO_CHANNEL_TIME) &&
5756             nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME,
5757                         survey->channel_time))
5758                 goto nla_put_failure;
5759         if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_BUSY) &&
5760             nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_BUSY,
5761                         survey->channel_time_busy))
5762                 goto nla_put_failure;
5763         if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_EXT_BUSY) &&
5764             nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_EXT_BUSY,
5765                         survey->channel_time_ext_busy))
5766                 goto nla_put_failure;
5767         if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_RX) &&
5768             nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_RX,
5769                         survey->channel_time_rx))
5770                 goto nla_put_failure;
5771         if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_TX) &&
5772             nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_TX,
5773                         survey->channel_time_tx))
5774                 goto nla_put_failure;
5775
5776         nla_nest_end(msg, infoattr);
5777
5778         return genlmsg_end(msg, hdr);
5779
5780  nla_put_failure:
5781         genlmsg_cancel(msg, hdr);
5782         return -EMSGSIZE;
5783 }
5784
5785 static int nl80211_dump_survey(struct sk_buff *skb,
5786                         struct netlink_callback *cb)
5787 {
5788         struct survey_info survey;
5789         struct cfg80211_registered_device *dev;
5790         struct wireless_dev *wdev;
5791         int survey_idx = cb->args[2];
5792         int res;
5793
5794         res = nl80211_prepare_wdev_dump(skb, cb, &dev, &wdev);
5795         if (res)
5796                 return res;
5797
5798         if (!wdev->netdev) {
5799                 res = -EINVAL;
5800                 goto out_err;
5801         }
5802
5803         if (!dev->ops->dump_survey) {
5804                 res = -EOPNOTSUPP;
5805                 goto out_err;
5806         }
5807
5808         while (1) {
5809                 struct ieee80211_channel *chan;
5810
5811                 res = rdev_dump_survey(dev, wdev->netdev, survey_idx, &survey);
5812                 if (res == -ENOENT)
5813                         break;
5814                 if (res)
5815                         goto out_err;
5816
5817                 /* Survey without a channel doesn't make sense */
5818                 if (!survey.channel) {
5819                         res = -EINVAL;
5820                         goto out;
5821                 }
5822
5823                 chan = ieee80211_get_channel(&dev->wiphy,
5824                                              survey.channel->center_freq);
5825                 if (!chan || chan->flags & IEEE80211_CHAN_DISABLED) {
5826                         survey_idx++;
5827                         continue;
5828                 }
5829
5830                 if (nl80211_send_survey(skb,
5831                                 NETLINK_CB(cb->skb).portid,
5832                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
5833                                 wdev->netdev, &survey) < 0)
5834                         goto out;
5835                 survey_idx++;
5836         }
5837
5838  out:
5839         cb->args[2] = survey_idx;
5840         res = skb->len;
5841  out_err:
5842         nl80211_finish_wdev_dump(dev);
5843         return res;
5844 }
5845
5846 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
5847 {
5848         return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
5849                                   NL80211_WPA_VERSION_2));
5850 }
5851
5852 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
5853 {
5854         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5855         struct net_device *dev = info->user_ptr[1];
5856         struct ieee80211_channel *chan;
5857         const u8 *bssid, *ssid, *ie = NULL, *sae_data = NULL;
5858         int err, ssid_len, ie_len = 0, sae_data_len = 0;
5859         enum nl80211_auth_type auth_type;
5860         struct key_parse key;
5861         bool local_state_change;
5862
5863         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
5864                 return -EINVAL;
5865
5866         if (!info->attrs[NL80211_ATTR_MAC])
5867                 return -EINVAL;
5868
5869         if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
5870                 return -EINVAL;
5871
5872         if (!info->attrs[NL80211_ATTR_SSID])
5873                 return -EINVAL;
5874
5875         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
5876                 return -EINVAL;
5877
5878         err = nl80211_parse_key(info, &key);
5879         if (err)
5880                 return err;
5881
5882         if (key.idx >= 0) {
5883                 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
5884                         return -EINVAL;
5885                 if (!key.p.key || !key.p.key_len)
5886                         return -EINVAL;
5887                 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
5888                      key.p.key_len != WLAN_KEY_LEN_WEP40) &&
5889                     (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
5890                      key.p.key_len != WLAN_KEY_LEN_WEP104))
5891                         return -EINVAL;
5892                 if (key.idx > 4)
5893                         return -EINVAL;
5894         } else {
5895                 key.p.key_len = 0;
5896                 key.p.key = NULL;
5897         }
5898
5899         if (key.idx >= 0) {
5900                 int i;
5901                 bool ok = false;
5902                 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
5903                         if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
5904                                 ok = true;
5905                                 break;
5906                         }
5907                 }
5908                 if (!ok)
5909                         return -EINVAL;
5910         }
5911
5912         if (!rdev->ops->auth)
5913                 return -EOPNOTSUPP;
5914
5915         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
5916             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
5917                 return -EOPNOTSUPP;
5918
5919         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
5920         chan = ieee80211_get_channel(&rdev->wiphy,
5921                 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
5922         if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED))
5923                 return -EINVAL;
5924
5925         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
5926         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
5927
5928         if (info->attrs[NL80211_ATTR_IE]) {
5929                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
5930                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5931         }
5932
5933         auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
5934         if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE))
5935                 return -EINVAL;
5936
5937         if (auth_type == NL80211_AUTHTYPE_SAE &&
5938             !info->attrs[NL80211_ATTR_SAE_DATA])
5939                 return -EINVAL;
5940
5941         if (info->attrs[NL80211_ATTR_SAE_DATA]) {
5942                 if (auth_type != NL80211_AUTHTYPE_SAE)
5943                         return -EINVAL;
5944                 sae_data = nla_data(info->attrs[NL80211_ATTR_SAE_DATA]);
5945                 sae_data_len = nla_len(info->attrs[NL80211_ATTR_SAE_DATA]);
5946                 /* need to include at least Auth Transaction and Status Code */
5947                 if (sae_data_len < 4)
5948                         return -EINVAL;
5949         }
5950
5951         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
5952
5953         /*
5954          * Since we no longer track auth state, ignore
5955          * requests to only change local state.
5956          */
5957         if (local_state_change)
5958                 return 0;
5959
5960         wdev_lock(dev->ieee80211_ptr);
5961         err = cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
5962                                  ssid, ssid_len, ie, ie_len,
5963                                  key.p.key, key.p.key_len, key.idx,
5964                                  sae_data, sae_data_len);
5965         wdev_unlock(dev->ieee80211_ptr);
5966         return err;
5967 }
5968
5969 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
5970                                    struct genl_info *info,
5971                                    struct cfg80211_crypto_settings *settings,
5972                                    int cipher_limit)
5973 {
5974         memset(settings, 0, sizeof(*settings));
5975
5976         settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
5977
5978         if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
5979                 u16 proto;
5980                 proto = nla_get_u16(
5981                         info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
5982                 settings->control_port_ethertype = cpu_to_be16(proto);
5983                 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
5984                     proto != ETH_P_PAE)
5985                         return -EINVAL;
5986                 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
5987                         settings->control_port_no_encrypt = true;
5988         } else
5989                 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
5990
5991         if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
5992                 void *data;
5993                 int len, i;
5994
5995                 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
5996                 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
5997                 settings->n_ciphers_pairwise = len / sizeof(u32);
5998
5999                 if (len % sizeof(u32))
6000                         return -EINVAL;
6001
6002                 if (settings->n_ciphers_pairwise > cipher_limit)
6003                         return -EINVAL;
6004
6005                 memcpy(settings->ciphers_pairwise, data, len);
6006
6007                 for (i = 0; i < settings->n_ciphers_pairwise; i++)
6008                         if (!cfg80211_supported_cipher_suite(
6009                                         &rdev->wiphy,
6010                                         settings->ciphers_pairwise[i]))
6011                                 return -EINVAL;
6012         }
6013
6014         if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
6015                 settings->cipher_group =
6016                         nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
6017                 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
6018                                                      settings->cipher_group))
6019                         return -EINVAL;
6020         }
6021
6022         if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
6023                 settings->wpa_versions =
6024                         nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
6025                 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
6026                         return -EINVAL;
6027         }
6028
6029         if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
6030                 void *data;
6031                 int len;
6032
6033                 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
6034                 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
6035                 settings->n_akm_suites = len / sizeof(u32);
6036
6037                 if (len % sizeof(u32))
6038                         return -EINVAL;
6039
6040                 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES)
6041                         return -EINVAL;
6042
6043                 memcpy(settings->akm_suites, data, len);
6044         }
6045
6046         return 0;
6047 }
6048
6049 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
6050 {
6051         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6052         struct net_device *dev = info->user_ptr[1];
6053         struct ieee80211_channel *chan;
6054         struct cfg80211_assoc_request req = {};
6055         const u8 *bssid, *ssid;
6056         int err, ssid_len = 0;
6057
6058         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6059                 return -EINVAL;
6060
6061         if (!info->attrs[NL80211_ATTR_MAC] ||
6062             !info->attrs[NL80211_ATTR_SSID] ||
6063             !info->attrs[NL80211_ATTR_WIPHY_FREQ])
6064                 return -EINVAL;
6065
6066         if (!rdev->ops->assoc)
6067                 return -EOPNOTSUPP;
6068
6069         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6070             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6071                 return -EOPNOTSUPP;
6072
6073         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6074
6075         chan = ieee80211_get_channel(&rdev->wiphy,
6076                 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
6077         if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED))
6078                 return -EINVAL;
6079
6080         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
6081         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
6082
6083         if (info->attrs[NL80211_ATTR_IE]) {
6084                 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6085                 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6086         }
6087
6088         if (info->attrs[NL80211_ATTR_USE_MFP]) {
6089                 enum nl80211_mfp mfp =
6090                         nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
6091                 if (mfp == NL80211_MFP_REQUIRED)
6092                         req.use_mfp = true;
6093                 else if (mfp != NL80211_MFP_NO)
6094                         return -EINVAL;
6095         }
6096
6097         if (info->attrs[NL80211_ATTR_PREV_BSSID])
6098                 req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
6099
6100         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
6101                 req.flags |= ASSOC_REQ_DISABLE_HT;
6102
6103         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
6104                 memcpy(&req.ht_capa_mask,
6105                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
6106                        sizeof(req.ht_capa_mask));
6107
6108         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
6109                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
6110                         return -EINVAL;
6111                 memcpy(&req.ht_capa,
6112                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
6113                        sizeof(req.ht_capa));
6114         }
6115
6116         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
6117                 req.flags |= ASSOC_REQ_DISABLE_VHT;
6118
6119         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
6120                 memcpy(&req.vht_capa_mask,
6121                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
6122                        sizeof(req.vht_capa_mask));
6123
6124         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
6125                 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
6126                         return -EINVAL;
6127                 memcpy(&req.vht_capa,
6128                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
6129                        sizeof(req.vht_capa));
6130         }
6131
6132         err = nl80211_crypto_settings(rdev, info, &req.crypto, 1);
6133         if (!err) {
6134                 wdev_lock(dev->ieee80211_ptr);
6135                 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid,
6136                                           ssid, ssid_len, &req);
6137                 wdev_unlock(dev->ieee80211_ptr);
6138         }
6139
6140         return err;
6141 }
6142
6143 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
6144 {
6145         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6146         struct net_device *dev = info->user_ptr[1];
6147         const u8 *ie = NULL, *bssid;
6148         int ie_len = 0, err;
6149         u16 reason_code;
6150         bool local_state_change;
6151
6152         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6153                 return -EINVAL;
6154
6155         if (!info->attrs[NL80211_ATTR_MAC])
6156                 return -EINVAL;
6157
6158         if (!info->attrs[NL80211_ATTR_REASON_CODE])
6159                 return -EINVAL;
6160
6161         if (!rdev->ops->deauth)
6162                 return -EOPNOTSUPP;
6163
6164         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6165             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6166                 return -EOPNOTSUPP;
6167
6168         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6169
6170         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
6171         if (reason_code == 0) {
6172                 /* Reason Code 0 is reserved */
6173                 return -EINVAL;
6174         }
6175
6176         if (info->attrs[NL80211_ATTR_IE]) {
6177                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6178                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6179         }
6180
6181         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
6182
6183         wdev_lock(dev->ieee80211_ptr);
6184         err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
6185                                    local_state_change);
6186         wdev_unlock(dev->ieee80211_ptr);
6187         return err;
6188 }
6189
6190 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
6191 {
6192         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6193         struct net_device *dev = info->user_ptr[1];
6194         const u8 *ie = NULL, *bssid;
6195         int ie_len = 0, err;
6196         u16 reason_code;
6197         bool local_state_change;
6198
6199         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6200                 return -EINVAL;
6201
6202         if (!info->attrs[NL80211_ATTR_MAC])
6203                 return -EINVAL;
6204
6205         if (!info->attrs[NL80211_ATTR_REASON_CODE])
6206                 return -EINVAL;
6207
6208         if (!rdev->ops->disassoc)
6209                 return -EOPNOTSUPP;
6210
6211         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6212             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6213                 return -EOPNOTSUPP;
6214
6215         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6216
6217         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
6218         if (reason_code == 0) {
6219                 /* Reason Code 0 is reserved */
6220                 return -EINVAL;
6221         }
6222
6223         if (info->attrs[NL80211_ATTR_IE]) {
6224                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6225                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6226         }
6227
6228         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
6229
6230         wdev_lock(dev->ieee80211_ptr);
6231         err = cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
6232                                      local_state_change);
6233         wdev_unlock(dev->ieee80211_ptr);
6234         return err;
6235 }
6236
6237 static bool
6238 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
6239                          int mcast_rate[IEEE80211_NUM_BANDS],
6240                          int rateval)
6241 {
6242         struct wiphy *wiphy = &rdev->wiphy;
6243         bool found = false;
6244         int band, i;
6245
6246         for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
6247                 struct ieee80211_supported_band *sband;
6248
6249                 sband = wiphy->bands[band];
6250                 if (!sband)
6251                         continue;
6252
6253                 for (i = 0; i < sband->n_bitrates; i++) {
6254                         if (sband->bitrates[i].bitrate == rateval) {
6255                                 mcast_rate[band] = i + 1;
6256                                 found = true;
6257                                 break;
6258                         }
6259                 }
6260         }
6261
6262         return found;
6263 }
6264
6265 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
6266 {
6267         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6268         struct net_device *dev = info->user_ptr[1];
6269         struct cfg80211_ibss_params ibss;
6270         struct wiphy *wiphy;
6271         struct cfg80211_cached_keys *connkeys = NULL;
6272         int err;
6273
6274         memset(&ibss, 0, sizeof(ibss));
6275
6276         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6277                 return -EINVAL;
6278
6279         if (!info->attrs[NL80211_ATTR_SSID] ||
6280             !nla_len(info->attrs[NL80211_ATTR_SSID]))
6281                 return -EINVAL;
6282
6283         ibss.beacon_interval = 100;
6284
6285         if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
6286                 ibss.beacon_interval =
6287                         nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
6288                 if (ibss.beacon_interval < 1 || ibss.beacon_interval > 10000)
6289                         return -EINVAL;
6290         }
6291
6292         if (!rdev->ops->join_ibss)
6293                 return -EOPNOTSUPP;
6294
6295         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
6296                 return -EOPNOTSUPP;
6297
6298         wiphy = &rdev->wiphy;
6299
6300         if (info->attrs[NL80211_ATTR_MAC]) {
6301                 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6302
6303                 if (!is_valid_ether_addr(ibss.bssid))
6304                         return -EINVAL;
6305         }
6306         ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
6307         ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
6308
6309         if (info->attrs[NL80211_ATTR_IE]) {
6310                 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6311                 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6312         }
6313
6314         err = nl80211_parse_chandef(rdev, info, &ibss.chandef);
6315         if (err)
6316                 return err;
6317
6318         if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef))
6319                 return -EINVAL;
6320
6321         switch (ibss.chandef.width) {
6322         case NL80211_CHAN_WIDTH_20_NOHT:
6323                 break;
6324         case NL80211_CHAN_WIDTH_20:
6325         case NL80211_CHAN_WIDTH_40:
6326                 if (rdev->wiphy.features & NL80211_FEATURE_HT_IBSS)
6327                         break;
6328         default:
6329                 return -EINVAL;
6330         }
6331
6332         ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
6333         ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
6334
6335         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
6336                 u8 *rates =
6337                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
6338                 int n_rates =
6339                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
6340                 struct ieee80211_supported_band *sband =
6341                         wiphy->bands[ibss.chandef.chan->band];
6342
6343                 err = ieee80211_get_ratemask(sband, rates, n_rates,
6344                                              &ibss.basic_rates);
6345                 if (err)
6346                         return err;
6347         }
6348
6349         if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
6350             !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
6351                         nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
6352                 return -EINVAL;
6353
6354         if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
6355                 bool no_ht = false;
6356
6357                 connkeys = nl80211_parse_connkeys(rdev,
6358                                           info->attrs[NL80211_ATTR_KEYS],
6359                                           &no_ht);
6360                 if (IS_ERR(connkeys))
6361                         return PTR_ERR(connkeys);
6362
6363                 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) &&
6364                     no_ht) {
6365                         kfree(connkeys);
6366                         return -EINVAL;
6367                 }
6368         }
6369
6370         ibss.control_port =
6371                 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]);
6372
6373         err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
6374         if (err)
6375                 kfree(connkeys);
6376         return err;
6377 }
6378
6379 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
6380 {
6381         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6382         struct net_device *dev = info->user_ptr[1];
6383
6384         if (!rdev->ops->leave_ibss)
6385                 return -EOPNOTSUPP;
6386
6387         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
6388                 return -EOPNOTSUPP;
6389
6390         return cfg80211_leave_ibss(rdev, dev, false);
6391 }
6392
6393 static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info)
6394 {
6395         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6396         struct net_device *dev = info->user_ptr[1];
6397         int mcast_rate[IEEE80211_NUM_BANDS];
6398         u32 nla_rate;
6399         int err;
6400
6401         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
6402             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6403                 return -EOPNOTSUPP;
6404
6405         if (!rdev->ops->set_mcast_rate)
6406                 return -EOPNOTSUPP;
6407
6408         memset(mcast_rate, 0, sizeof(mcast_rate));
6409
6410         if (!info->attrs[NL80211_ATTR_MCAST_RATE])
6411                 return -EINVAL;
6412
6413         nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]);
6414         if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate))
6415                 return -EINVAL;
6416
6417         err = rdev->ops->set_mcast_rate(&rdev->wiphy, dev, mcast_rate);
6418
6419         return err;
6420 }
6421
6422
6423 #ifdef CONFIG_NL80211_TESTMODE
6424 static struct genl_multicast_group nl80211_testmode_mcgrp = {
6425         .name = "testmode",
6426 };
6427
6428 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
6429 {
6430         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6431         int err;
6432
6433         if (!info->attrs[NL80211_ATTR_TESTDATA])
6434                 return -EINVAL;
6435
6436         err = -EOPNOTSUPP;
6437         if (rdev->ops->testmode_cmd) {
6438                 rdev->testmode_info = info;
6439                 err = rdev_testmode_cmd(rdev,
6440                                 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
6441                                 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
6442                 rdev->testmode_info = NULL;
6443         }
6444
6445         return err;
6446 }
6447
6448 static int nl80211_testmode_dump(struct sk_buff *skb,
6449                                  struct netlink_callback *cb)
6450 {
6451         struct cfg80211_registered_device *rdev;
6452         int err;
6453         long phy_idx;
6454         void *data = NULL;
6455         int data_len = 0;
6456
6457         rtnl_lock();
6458
6459         if (cb->args[0]) {
6460                 /*
6461                  * 0 is a valid index, but not valid for args[0],
6462                  * so we need to offset by 1.
6463                  */
6464                 phy_idx = cb->args[0] - 1;
6465         } else {
6466                 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
6467                                   nl80211_fam.attrbuf, nl80211_fam.maxattr,
6468                                   nl80211_policy);
6469                 if (err)
6470                         goto out_err;
6471
6472                 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk),
6473                                                   nl80211_fam.attrbuf);
6474                 if (IS_ERR(rdev)) {
6475                         err = PTR_ERR(rdev);
6476                         goto out_err;
6477                 }
6478                 phy_idx = rdev->wiphy_idx;
6479                 rdev = NULL;
6480
6481                 if (nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA])
6482                         cb->args[1] =
6483                                 (long)nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA];
6484         }
6485
6486         if (cb->args[1]) {
6487                 data = nla_data((void *)cb->args[1]);
6488                 data_len = nla_len((void *)cb->args[1]);
6489         }
6490
6491         rdev = cfg80211_rdev_by_wiphy_idx(phy_idx);
6492         if (!rdev) {
6493                 err = -ENOENT;
6494                 goto out_err;
6495         }
6496
6497         if (!rdev->ops->testmode_dump) {
6498                 err = -EOPNOTSUPP;
6499                 goto out_err;
6500         }
6501
6502         while (1) {
6503                 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
6504                                            cb->nlh->nlmsg_seq, NLM_F_MULTI,
6505                                            NL80211_CMD_TESTMODE);
6506                 struct nlattr *tmdata;
6507
6508                 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) {
6509                         genlmsg_cancel(skb, hdr);
6510                         break;
6511                 }
6512
6513                 tmdata = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
6514                 if (!tmdata) {
6515                         genlmsg_cancel(skb, hdr);
6516                         break;
6517                 }
6518                 err = rdev_testmode_dump(rdev, skb, cb, data, data_len);
6519                 nla_nest_end(skb, tmdata);
6520
6521                 if (err == -ENOBUFS || err == -ENOENT) {
6522                         genlmsg_cancel(skb, hdr);
6523                         break;
6524                 } else if (err) {
6525                         genlmsg_cancel(skb, hdr);
6526                         goto out_err;
6527                 }
6528
6529                 genlmsg_end(skb, hdr);
6530         }
6531
6532         err = skb->len;
6533         /* see above */
6534         cb->args[0] = phy_idx + 1;
6535  out_err:
6536         rtnl_unlock();
6537         return err;
6538 }
6539
6540 static struct sk_buff *
6541 __cfg80211_testmode_alloc_skb(struct cfg80211_registered_device *rdev,
6542                               int approxlen, u32 portid, u32 seq, gfp_t gfp)
6543 {
6544         struct sk_buff *skb;
6545         void *hdr;
6546         struct nlattr *data;
6547
6548         skb = nlmsg_new(approxlen + 100, gfp);
6549         if (!skb)
6550                 return NULL;
6551
6552         hdr = nl80211hdr_put(skb, portid, seq, 0, NL80211_CMD_TESTMODE);
6553         if (!hdr) {
6554                 kfree_skb(skb);
6555                 return NULL;
6556         }
6557
6558         if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
6559                 goto nla_put_failure;
6560         data = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
6561
6562         ((void **)skb->cb)[0] = rdev;
6563         ((void **)skb->cb)[1] = hdr;
6564         ((void **)skb->cb)[2] = data;
6565
6566         return skb;
6567
6568  nla_put_failure:
6569         kfree_skb(skb);
6570         return NULL;
6571 }
6572
6573 struct sk_buff *cfg80211_testmode_alloc_reply_skb(struct wiphy *wiphy,
6574                                                   int approxlen)
6575 {
6576         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
6577
6578         if (WARN_ON(!rdev->testmode_info))
6579                 return NULL;
6580
6581         return __cfg80211_testmode_alloc_skb(rdev, approxlen,
6582                                 rdev->testmode_info->snd_portid,
6583                                 rdev->testmode_info->snd_seq,
6584                                 GFP_KERNEL);
6585 }
6586 EXPORT_SYMBOL(cfg80211_testmode_alloc_reply_skb);
6587
6588 int cfg80211_testmode_reply(struct sk_buff *skb)
6589 {
6590         struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
6591         void *hdr = ((void **)skb->cb)[1];
6592         struct nlattr *data = ((void **)skb->cb)[2];
6593
6594         if (WARN_ON(!rdev->testmode_info)) {
6595                 kfree_skb(skb);
6596                 return -EINVAL;
6597         }
6598
6599         nla_nest_end(skb, data);
6600         genlmsg_end(skb, hdr);
6601         return genlmsg_reply(skb, rdev->testmode_info);
6602 }
6603 EXPORT_SYMBOL(cfg80211_testmode_reply);
6604
6605 struct sk_buff *cfg80211_testmode_alloc_event_skb(struct wiphy *wiphy,
6606                                                   int approxlen, gfp_t gfp)
6607 {
6608         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
6609
6610         return __cfg80211_testmode_alloc_skb(rdev, approxlen, 0, 0, gfp);
6611 }
6612 EXPORT_SYMBOL(cfg80211_testmode_alloc_event_skb);
6613
6614 void cfg80211_testmode_event(struct sk_buff *skb, gfp_t gfp)
6615 {
6616         void *hdr = ((void **)skb->cb)[1];
6617         struct nlattr *data = ((void **)skb->cb)[2];
6618
6619         nla_nest_end(skb, data);
6620         genlmsg_end(skb, hdr);
6621         genlmsg_multicast(skb, 0, nl80211_testmode_mcgrp.id, gfp);
6622 }
6623 EXPORT_SYMBOL(cfg80211_testmode_event);
6624 #endif
6625
6626 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
6627 {
6628         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6629         struct net_device *dev = info->user_ptr[1];
6630         struct cfg80211_connect_params connect;
6631         struct wiphy *wiphy;
6632         struct cfg80211_cached_keys *connkeys = NULL;
6633         int err;
6634
6635         memset(&connect, 0, sizeof(connect));
6636
6637         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6638                 return -EINVAL;
6639
6640         if (!info->attrs[NL80211_ATTR_SSID] ||
6641             !nla_len(info->attrs[NL80211_ATTR_SSID]))
6642                 return -EINVAL;
6643
6644         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
6645                 connect.auth_type =
6646                         nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
6647                 if (!nl80211_valid_auth_type(rdev, connect.auth_type,
6648                                              NL80211_CMD_CONNECT))
6649                         return -EINVAL;
6650         } else
6651                 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
6652
6653         connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
6654
6655         err = nl80211_crypto_settings(rdev, info, &connect.crypto,
6656                                       NL80211_MAX_NR_CIPHER_SUITES);
6657         if (err)
6658                 return err;
6659
6660         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6661             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6662                 return -EOPNOTSUPP;
6663
6664         wiphy = &rdev->wiphy;
6665
6666         connect.bg_scan_period = -1;
6667         if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] &&
6668                 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) {
6669                 connect.bg_scan_period =
6670                         nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]);
6671         }
6672
6673         if (info->attrs[NL80211_ATTR_MAC])
6674                 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6675         connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
6676         connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
6677
6678         if (info->attrs[NL80211_ATTR_IE]) {
6679                 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6680                 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6681         }
6682
6683         if (info->attrs[NL80211_ATTR_USE_MFP]) {
6684                 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
6685                 if (connect.mfp != NL80211_MFP_REQUIRED &&
6686                     connect.mfp != NL80211_MFP_NO)
6687                         return -EINVAL;
6688         } else {
6689                 connect.mfp = NL80211_MFP_NO;
6690         }
6691
6692         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
6693                 connect.channel =
6694                         ieee80211_get_channel(wiphy,
6695                             nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
6696                 if (!connect.channel ||
6697                     connect.channel->flags & IEEE80211_CHAN_DISABLED)
6698                         return -EINVAL;
6699         }
6700
6701         if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
6702                 connkeys = nl80211_parse_connkeys(rdev,
6703                                           info->attrs[NL80211_ATTR_KEYS], NULL);
6704                 if (IS_ERR(connkeys))
6705                         return PTR_ERR(connkeys);
6706         }
6707
6708         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
6709                 connect.flags |= ASSOC_REQ_DISABLE_HT;
6710
6711         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
6712                 memcpy(&connect.ht_capa_mask,
6713                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
6714                        sizeof(connect.ht_capa_mask));
6715
6716         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
6717                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) {
6718                         kfree(connkeys);
6719                         return -EINVAL;
6720                 }
6721                 memcpy(&connect.ht_capa,
6722                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
6723                        sizeof(connect.ht_capa));
6724         }
6725
6726         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
6727                 connect.flags |= ASSOC_REQ_DISABLE_VHT;
6728
6729         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
6730                 memcpy(&connect.vht_capa_mask,
6731                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
6732                        sizeof(connect.vht_capa_mask));
6733
6734         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
6735                 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) {
6736                         kfree(connkeys);
6737                         return -EINVAL;
6738                 }
6739                 memcpy(&connect.vht_capa,
6740                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
6741                        sizeof(connect.vht_capa));
6742         }
6743
6744         wdev_lock(dev->ieee80211_ptr);
6745         err = cfg80211_connect(rdev, dev, &connect, connkeys, NULL);
6746         wdev_unlock(dev->ieee80211_ptr);
6747         if (err)
6748                 kfree(connkeys);
6749         return err;
6750 }
6751
6752 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
6753 {
6754         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6755         struct net_device *dev = info->user_ptr[1];
6756         u16 reason;
6757         int ret;
6758
6759         if (!info->attrs[NL80211_ATTR_REASON_CODE])
6760                 reason = WLAN_REASON_DEAUTH_LEAVING;
6761         else
6762                 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
6763
6764         if (reason == 0)
6765                 return -EINVAL;
6766
6767         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6768             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6769                 return -EOPNOTSUPP;
6770
6771         wdev_lock(dev->ieee80211_ptr);
6772         ret = cfg80211_disconnect(rdev, dev, reason, true);
6773         wdev_unlock(dev->ieee80211_ptr);
6774         return ret;
6775 }
6776
6777 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
6778 {
6779         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6780         struct net *net;
6781         int err;
6782         u32 pid;
6783
6784         if (!info->attrs[NL80211_ATTR_PID])
6785                 return -EINVAL;
6786
6787         pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
6788
6789         net = get_net_ns_by_pid(pid);
6790         if (IS_ERR(net))
6791                 return PTR_ERR(net);
6792
6793         err = 0;
6794
6795         /* check if anything to do */
6796         if (!net_eq(wiphy_net(&rdev->wiphy), net))
6797                 err = cfg80211_switch_netns(rdev, net);
6798
6799         put_net(net);
6800         return err;
6801 }
6802
6803 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
6804 {
6805         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6806         int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
6807                         struct cfg80211_pmksa *pmksa) = NULL;
6808         struct net_device *dev = info->user_ptr[1];
6809         struct cfg80211_pmksa pmksa;
6810
6811         memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
6812
6813         if (!info->attrs[NL80211_ATTR_MAC])
6814                 return -EINVAL;
6815
6816         if (!info->attrs[NL80211_ATTR_PMKID])
6817                 return -EINVAL;
6818
6819         pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
6820         pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6821
6822         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6823             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6824                 return -EOPNOTSUPP;
6825
6826         switch (info->genlhdr->cmd) {
6827         case NL80211_CMD_SET_PMKSA:
6828                 rdev_ops = rdev->ops->set_pmksa;
6829                 break;
6830         case NL80211_CMD_DEL_PMKSA:
6831                 rdev_ops = rdev->ops->del_pmksa;
6832                 break;
6833         default:
6834                 WARN_ON(1);
6835                 break;
6836         }
6837
6838         if (!rdev_ops)
6839                 return -EOPNOTSUPP;
6840
6841         return rdev_ops(&rdev->wiphy, dev, &pmksa);
6842 }
6843
6844 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
6845 {
6846         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6847         struct net_device *dev = info->user_ptr[1];
6848
6849         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6850             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6851                 return -EOPNOTSUPP;
6852
6853         if (!rdev->ops->flush_pmksa)
6854                 return -EOPNOTSUPP;
6855
6856         return rdev_flush_pmksa(rdev, dev);
6857 }
6858
6859 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
6860 {
6861         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6862         struct net_device *dev = info->user_ptr[1];
6863         u8 action_code, dialog_token;
6864         u16 status_code;
6865         u8 *peer;
6866
6867         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
6868             !rdev->ops->tdls_mgmt)
6869                 return -EOPNOTSUPP;
6870
6871         if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
6872             !info->attrs[NL80211_ATTR_STATUS_CODE] ||
6873             !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
6874             !info->attrs[NL80211_ATTR_IE] ||
6875             !info->attrs[NL80211_ATTR_MAC])
6876                 return -EINVAL;
6877
6878         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
6879         action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
6880         status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
6881         dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
6882
6883         return rdev_tdls_mgmt(rdev, dev, peer, action_code,
6884                               dialog_token, status_code,
6885                               nla_data(info->attrs[NL80211_ATTR_IE]),
6886                               nla_len(info->attrs[NL80211_ATTR_IE]));
6887 }
6888
6889 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
6890 {
6891         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6892         struct net_device *dev = info->user_ptr[1];
6893         enum nl80211_tdls_operation operation;
6894         u8 *peer;
6895
6896         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
6897             !rdev->ops->tdls_oper)
6898                 return -EOPNOTSUPP;
6899
6900         if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
6901             !info->attrs[NL80211_ATTR_MAC])
6902                 return -EINVAL;
6903
6904         operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
6905         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
6906
6907         return rdev_tdls_oper(rdev, dev, peer, operation);
6908 }
6909
6910 static int nl80211_remain_on_channel(struct sk_buff *skb,
6911                                      struct genl_info *info)
6912 {
6913         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6914         struct wireless_dev *wdev = info->user_ptr[1];
6915         struct cfg80211_chan_def chandef;
6916         struct sk_buff *msg;
6917         void *hdr;
6918         u64 cookie;
6919         u32 duration;
6920         int err;
6921
6922         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
6923             !info->attrs[NL80211_ATTR_DURATION])
6924                 return -EINVAL;
6925
6926         duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
6927
6928         if (!rdev->ops->remain_on_channel ||
6929             !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL))
6930                 return -EOPNOTSUPP;
6931
6932         /*
6933          * We should be on that channel for at least a minimum amount of
6934          * time (10ms) but no longer than the driver supports.
6935          */
6936         if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
6937             duration > rdev->wiphy.max_remain_on_channel_duration)
6938                 return -EINVAL;
6939
6940         err = nl80211_parse_chandef(rdev, info, &chandef);
6941         if (err)
6942                 return err;
6943
6944         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6945         if (!msg)
6946                 return -ENOMEM;
6947
6948         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
6949                              NL80211_CMD_REMAIN_ON_CHANNEL);
6950
6951         if (IS_ERR(hdr)) {
6952                 err = PTR_ERR(hdr);
6953                 goto free_msg;
6954         }
6955
6956         err = rdev_remain_on_channel(rdev, wdev, chandef.chan,
6957                                      duration, &cookie);
6958
6959         if (err)
6960                 goto free_msg;
6961
6962         if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
6963                 goto nla_put_failure;
6964
6965         genlmsg_end(msg, hdr);
6966
6967         return genlmsg_reply(msg, info);
6968
6969  nla_put_failure:
6970         err = -ENOBUFS;
6971  free_msg:
6972         nlmsg_free(msg);
6973         return err;
6974 }
6975
6976 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
6977                                             struct genl_info *info)
6978 {
6979         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6980         struct wireless_dev *wdev = info->user_ptr[1];
6981         u64 cookie;
6982
6983         if (!info->attrs[NL80211_ATTR_COOKIE])
6984                 return -EINVAL;
6985
6986         if (!rdev->ops->cancel_remain_on_channel)
6987                 return -EOPNOTSUPP;
6988
6989         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
6990
6991         return rdev_cancel_remain_on_channel(rdev, wdev, cookie);
6992 }
6993
6994 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
6995                            u8 *rates, u8 rates_len)
6996 {
6997         u8 i;
6998         u32 mask = 0;
6999
7000         for (i = 0; i < rates_len; i++) {
7001                 int rate = (rates[i] & 0x7f) * 5;
7002                 int ridx;
7003                 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
7004                         struct ieee80211_rate *srate =
7005                                 &sband->bitrates[ridx];
7006                         if (rate == srate->bitrate) {
7007                                 mask |= 1 << ridx;
7008                                 break;
7009                         }
7010                 }
7011                 if (ridx == sband->n_bitrates)
7012                         return 0; /* rate not found */
7013         }
7014
7015         return mask;
7016 }
7017
7018 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband,
7019                                u8 *rates, u8 rates_len,
7020                                u8 mcs[IEEE80211_HT_MCS_MASK_LEN])
7021 {
7022         u8 i;
7023
7024         memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN);
7025
7026         for (i = 0; i < rates_len; i++) {
7027                 int ridx, rbit;
7028
7029                 ridx = rates[i] / 8;
7030                 rbit = BIT(rates[i] % 8);
7031
7032                 /* check validity */
7033                 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN))
7034                         return false;
7035
7036                 /* check availability */
7037                 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit)
7038                         mcs[ridx] |= rbit;
7039                 else
7040                         return false;
7041         }
7042
7043         return true;
7044 }
7045
7046 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
7047         [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
7048                                     .len = NL80211_MAX_SUPP_RATES },
7049         [NL80211_TXRATE_MCS] = { .type = NLA_BINARY,
7050                                  .len = NL80211_MAX_SUPP_HT_RATES },
7051 };
7052
7053 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
7054                                        struct genl_info *info)
7055 {
7056         struct nlattr *tb[NL80211_TXRATE_MAX + 1];
7057         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7058         struct cfg80211_bitrate_mask mask;
7059         int rem, i;
7060         struct net_device *dev = info->user_ptr[1];
7061         struct nlattr *tx_rates;
7062         struct ieee80211_supported_band *sband;
7063
7064         if (info->attrs[NL80211_ATTR_TX_RATES] == NULL)
7065                 return -EINVAL;
7066
7067         if (!rdev->ops->set_bitrate_mask)
7068                 return -EOPNOTSUPP;
7069
7070         memset(&mask, 0, sizeof(mask));
7071         /* Default to all rates enabled */
7072         for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
7073                 sband = rdev->wiphy.bands[i];
7074                 mask.control[i].legacy =
7075                         sband ? (1 << sband->n_bitrates) - 1 : 0;
7076                 if (sband)
7077                         memcpy(mask.control[i].mcs,
7078                                sband->ht_cap.mcs.rx_mask,
7079                                sizeof(mask.control[i].mcs));
7080                 else
7081                         memset(mask.control[i].mcs, 0,
7082                                sizeof(mask.control[i].mcs));
7083         }
7084
7085         /*
7086          * The nested attribute uses enum nl80211_band as the index. This maps
7087          * directly to the enum ieee80211_band values used in cfg80211.
7088          */
7089         BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8);
7090         nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem)
7091         {
7092                 enum ieee80211_band band = nla_type(tx_rates);
7093                 if (band < 0 || band >= IEEE80211_NUM_BANDS)
7094                         return -EINVAL;
7095                 sband = rdev->wiphy.bands[band];
7096                 if (sband == NULL)
7097                         return -EINVAL;
7098                 nla_parse(tb, NL80211_TXRATE_MAX, nla_data(tx_rates),
7099                           nla_len(tx_rates), nl80211_txattr_policy);
7100                 if (tb[NL80211_TXRATE_LEGACY]) {
7101                         mask.control[band].legacy = rateset_to_mask(
7102                                 sband,
7103                                 nla_data(tb[NL80211_TXRATE_LEGACY]),
7104                                 nla_len(tb[NL80211_TXRATE_LEGACY]));
7105                         if ((mask.control[band].legacy == 0) &&
7106                             nla_len(tb[NL80211_TXRATE_LEGACY]))
7107                                 return -EINVAL;
7108                 }
7109                 if (tb[NL80211_TXRATE_MCS]) {
7110                         if (!ht_rateset_to_mask(
7111                                         sband,
7112                                         nla_data(tb[NL80211_TXRATE_MCS]),
7113                                         nla_len(tb[NL80211_TXRATE_MCS]),
7114                                         mask.control[band].mcs))
7115                                 return -EINVAL;
7116                 }
7117
7118                 if (mask.control[band].legacy == 0) {
7119                         /* don't allow empty legacy rates if HT
7120                          * is not even supported. */
7121                         if (!rdev->wiphy.bands[band]->ht_cap.ht_supported)
7122                                 return -EINVAL;
7123
7124                         for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
7125                                 if (mask.control[band].mcs[i])
7126                                         break;
7127
7128                         /* legacy and mcs rates may not be both empty */
7129                         if (i == IEEE80211_HT_MCS_MASK_LEN)
7130                                 return -EINVAL;
7131                 }
7132         }
7133
7134         return rdev_set_bitrate_mask(rdev, dev, NULL, &mask);
7135 }
7136
7137 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
7138 {
7139         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7140         struct wireless_dev *wdev = info->user_ptr[1];
7141         u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
7142
7143         if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
7144                 return -EINVAL;
7145
7146         if (info->attrs[NL80211_ATTR_FRAME_TYPE])
7147                 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
7148
7149         switch (wdev->iftype) {
7150         case NL80211_IFTYPE_STATION:
7151         case NL80211_IFTYPE_ADHOC:
7152         case NL80211_IFTYPE_P2P_CLIENT:
7153         case NL80211_IFTYPE_AP:
7154         case NL80211_IFTYPE_AP_VLAN:
7155         case NL80211_IFTYPE_MESH_POINT:
7156         case NL80211_IFTYPE_P2P_GO:
7157         case NL80211_IFTYPE_P2P_DEVICE:
7158                 break;
7159         default:
7160                 return -EOPNOTSUPP;
7161         }
7162
7163         /* not much point in registering if we can't reply */
7164         if (!rdev->ops->mgmt_tx)
7165                 return -EOPNOTSUPP;
7166
7167         return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type,
7168                         nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
7169                         nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]));
7170 }
7171
7172 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
7173 {
7174         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7175         struct wireless_dev *wdev = info->user_ptr[1];
7176         struct cfg80211_chan_def chandef;
7177         int err;
7178         void *hdr = NULL;
7179         u64 cookie;
7180         struct sk_buff *msg = NULL;
7181         unsigned int wait = 0;
7182         bool offchan, no_cck, dont_wait_for_ack;
7183
7184         dont_wait_for_ack = info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK];
7185
7186         if (!info->attrs[NL80211_ATTR_FRAME])
7187                 return -EINVAL;
7188
7189         if (!rdev->ops->mgmt_tx)
7190                 return -EOPNOTSUPP;
7191
7192         switch (wdev->iftype) {
7193         case NL80211_IFTYPE_P2P_DEVICE:
7194                 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
7195                         return -EINVAL;
7196         case NL80211_IFTYPE_STATION:
7197         case NL80211_IFTYPE_ADHOC:
7198         case NL80211_IFTYPE_P2P_CLIENT:
7199         case NL80211_IFTYPE_AP:
7200         case NL80211_IFTYPE_AP_VLAN:
7201         case NL80211_IFTYPE_MESH_POINT:
7202         case NL80211_IFTYPE_P2P_GO:
7203                 break;
7204         default:
7205                 return -EOPNOTSUPP;
7206         }
7207
7208         if (info->attrs[NL80211_ATTR_DURATION]) {
7209                 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
7210                         return -EINVAL;
7211                 wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
7212
7213                 /*
7214                  * We should wait on the channel for at least a minimum amount
7215                  * of time (10ms) but no longer than the driver supports.
7216                  */
7217                 if (wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
7218                     wait > rdev->wiphy.max_remain_on_channel_duration)
7219                         return -EINVAL;
7220
7221         }
7222
7223         offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
7224
7225         if (offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
7226                 return -EINVAL;
7227
7228         no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
7229
7230         /* get the channel if any has been specified, otherwise pass NULL to
7231          * the driver. The latter will use the current one
7232          */
7233         chandef.chan = NULL;
7234         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
7235                 err = nl80211_parse_chandef(rdev, info, &chandef);
7236                 if (err)
7237                         return err;
7238         }
7239
7240         if (!chandef.chan && offchan)
7241                 return -EINVAL;
7242
7243         if (!dont_wait_for_ack) {
7244                 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7245                 if (!msg)
7246                         return -ENOMEM;
7247
7248                 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7249                                      NL80211_CMD_FRAME);
7250
7251                 if (IS_ERR(hdr)) {
7252                         err = PTR_ERR(hdr);
7253                         goto free_msg;
7254                 }
7255         }
7256
7257         err = cfg80211_mlme_mgmt_tx(rdev, wdev, chandef.chan, offchan, wait,
7258                                     nla_data(info->attrs[NL80211_ATTR_FRAME]),
7259                                     nla_len(info->attrs[NL80211_ATTR_FRAME]),
7260                                     no_cck, dont_wait_for_ack, &cookie);
7261         if (err)
7262                 goto free_msg;
7263
7264         if (msg) {
7265                 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
7266                         goto nla_put_failure;
7267
7268                 genlmsg_end(msg, hdr);
7269                 return genlmsg_reply(msg, info);
7270         }
7271
7272         return 0;
7273
7274  nla_put_failure:
7275         err = -ENOBUFS;
7276  free_msg:
7277         nlmsg_free(msg);
7278         return err;
7279 }
7280
7281 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
7282 {
7283         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7284         struct wireless_dev *wdev = info->user_ptr[1];
7285         u64 cookie;
7286
7287         if (!info->attrs[NL80211_ATTR_COOKIE])
7288                 return -EINVAL;
7289
7290         if (!rdev->ops->mgmt_tx_cancel_wait)
7291                 return -EOPNOTSUPP;
7292
7293         switch (wdev->iftype) {
7294         case NL80211_IFTYPE_STATION:
7295         case NL80211_IFTYPE_ADHOC:
7296         case NL80211_IFTYPE_P2P_CLIENT:
7297         case NL80211_IFTYPE_AP:
7298         case NL80211_IFTYPE_AP_VLAN:
7299         case NL80211_IFTYPE_P2P_GO:
7300         case NL80211_IFTYPE_P2P_DEVICE:
7301                 break;
7302         default:
7303                 return -EOPNOTSUPP;
7304         }
7305
7306         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
7307
7308         return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie);
7309 }
7310
7311 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
7312 {
7313         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7314         struct wireless_dev *wdev;
7315         struct net_device *dev = info->user_ptr[1];
7316         u8 ps_state;
7317         bool state;
7318         int err;
7319
7320         if (!info->attrs[NL80211_ATTR_PS_STATE])
7321                 return -EINVAL;
7322
7323         ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
7324
7325         if (ps_state != NL80211_PS_DISABLED && ps_state != NL80211_PS_ENABLED)
7326                 return -EINVAL;
7327
7328         wdev = dev->ieee80211_ptr;
7329
7330         if (!rdev->ops->set_power_mgmt)
7331                 return -EOPNOTSUPP;
7332
7333         state = (ps_state == NL80211_PS_ENABLED) ? true : false;
7334
7335         if (state == wdev->ps)
7336                 return 0;
7337
7338         err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout);
7339         if (!err)
7340                 wdev->ps = state;
7341         return err;
7342 }
7343
7344 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
7345 {
7346         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7347         enum nl80211_ps_state ps_state;
7348         struct wireless_dev *wdev;
7349         struct net_device *dev = info->user_ptr[1];
7350         struct sk_buff *msg;
7351         void *hdr;
7352         int err;
7353
7354         wdev = dev->ieee80211_ptr;
7355
7356         if (!rdev->ops->set_power_mgmt)
7357                 return -EOPNOTSUPP;
7358
7359         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7360         if (!msg)
7361                 return -ENOMEM;
7362
7363         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7364                              NL80211_CMD_GET_POWER_SAVE);
7365         if (!hdr) {
7366                 err = -ENOBUFS;
7367                 goto free_msg;
7368         }
7369
7370         if (wdev->ps)
7371                 ps_state = NL80211_PS_ENABLED;
7372         else
7373                 ps_state = NL80211_PS_DISABLED;
7374
7375         if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state))
7376                 goto nla_put_failure;
7377
7378         genlmsg_end(msg, hdr);
7379         return genlmsg_reply(msg, info);
7380
7381  nla_put_failure:
7382         err = -ENOBUFS;
7383  free_msg:
7384         nlmsg_free(msg);
7385         return err;
7386 }
7387
7388 static struct nla_policy
7389 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] __read_mostly = {
7390         [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 },
7391         [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
7392         [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
7393         [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 },
7394         [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 },
7395         [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 },
7396 };
7397
7398 static int nl80211_set_cqm_txe(struct genl_info *info,
7399                                u32 rate, u32 pkts, u32 intvl)
7400 {
7401         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7402         struct wireless_dev *wdev;
7403         struct net_device *dev = info->user_ptr[1];
7404
7405         if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL)
7406                 return -EINVAL;
7407
7408         wdev = dev->ieee80211_ptr;
7409
7410         if (!rdev->ops->set_cqm_txe_config)
7411                 return -EOPNOTSUPP;
7412
7413         if (wdev->iftype != NL80211_IFTYPE_STATION &&
7414             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
7415                 return -EOPNOTSUPP;
7416
7417         return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl);
7418 }
7419
7420 static int nl80211_set_cqm_rssi(struct genl_info *info,
7421                                 s32 threshold, u32 hysteresis)
7422 {
7423         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7424         struct wireless_dev *wdev;
7425         struct net_device *dev = info->user_ptr[1];
7426
7427         if (threshold > 0)
7428                 return -EINVAL;
7429
7430         wdev = dev->ieee80211_ptr;
7431
7432         if (!rdev->ops->set_cqm_rssi_config)
7433                 return -EOPNOTSUPP;
7434
7435         if (wdev->iftype != NL80211_IFTYPE_STATION &&
7436             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
7437                 return -EOPNOTSUPP;
7438
7439         return rdev_set_cqm_rssi_config(rdev, dev, threshold, hysteresis);
7440 }
7441
7442 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
7443 {
7444         struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
7445         struct nlattr *cqm;
7446         int err;
7447
7448         cqm = info->attrs[NL80211_ATTR_CQM];
7449         if (!cqm) {
7450                 err = -EINVAL;
7451                 goto out;
7452         }
7453
7454         err = nla_parse_nested(attrs, NL80211_ATTR_CQM_MAX, cqm,
7455                                nl80211_attr_cqm_policy);
7456         if (err)
7457                 goto out;
7458
7459         if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
7460             attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
7461                 s32 threshold;
7462                 u32 hysteresis;
7463                 threshold = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
7464                 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
7465                 err = nl80211_set_cqm_rssi(info, threshold, hysteresis);
7466         } else if (attrs[NL80211_ATTR_CQM_TXE_RATE] &&
7467                    attrs[NL80211_ATTR_CQM_TXE_PKTS] &&
7468                    attrs[NL80211_ATTR_CQM_TXE_INTVL]) {
7469                 u32 rate, pkts, intvl;
7470                 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]);
7471                 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]);
7472                 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]);
7473                 err = nl80211_set_cqm_txe(info, rate, pkts, intvl);
7474         } else
7475                 err = -EINVAL;
7476
7477 out:
7478         return err;
7479 }
7480
7481 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
7482 {
7483         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7484         struct net_device *dev = info->user_ptr[1];
7485         struct mesh_config cfg;
7486         struct mesh_setup setup;
7487         int err;
7488
7489         /* start with default */
7490         memcpy(&cfg, &default_mesh_config, sizeof(cfg));
7491         memcpy(&setup, &default_mesh_setup, sizeof(setup));
7492
7493         if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
7494                 /* and parse parameters if given */
7495                 err = nl80211_parse_mesh_config(info, &cfg, NULL);
7496                 if (err)
7497                         return err;
7498         }
7499
7500         if (!info->attrs[NL80211_ATTR_MESH_ID] ||
7501             !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
7502                 return -EINVAL;
7503
7504         setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
7505         setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
7506
7507         if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
7508             !nl80211_parse_mcast_rate(rdev, setup.mcast_rate,
7509                             nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
7510                         return -EINVAL;
7511
7512         if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
7513                 setup.beacon_interval =
7514                         nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
7515                 if (setup.beacon_interval < 10 ||
7516                     setup.beacon_interval > 10000)
7517                         return -EINVAL;
7518         }
7519
7520         if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
7521                 setup.dtim_period =
7522                         nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
7523                 if (setup.dtim_period < 1 || setup.dtim_period > 100)
7524                         return -EINVAL;
7525         }
7526
7527         if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
7528                 /* parse additional setup parameters if given */
7529                 err = nl80211_parse_mesh_setup(info, &setup);
7530                 if (err)
7531                         return err;
7532         }
7533
7534         if (setup.user_mpm)
7535                 cfg.auto_open_plinks = false;
7536
7537         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
7538                 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
7539                 if (err)
7540                         return err;
7541         } else {
7542                 /* cfg80211_join_mesh() will sort it out */
7543                 setup.chandef.chan = NULL;
7544         }
7545
7546         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
7547                 u8 *rates = nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
7548                 int n_rates =
7549                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
7550                 struct ieee80211_supported_band *sband;
7551
7552                 if (!setup.chandef.chan)
7553                         return -EINVAL;
7554
7555                 sband = rdev->wiphy.bands[setup.chandef.chan->band];
7556
7557                 err = ieee80211_get_ratemask(sband, rates, n_rates,
7558                                              &setup.basic_rates);
7559                 if (err)
7560                         return err;
7561         }
7562
7563         return cfg80211_join_mesh(rdev, dev, &setup, &cfg);
7564 }
7565
7566 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
7567 {
7568         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7569         struct net_device *dev = info->user_ptr[1];
7570
7571         return cfg80211_leave_mesh(rdev, dev);
7572 }
7573
7574 #ifdef CONFIG_PM
7575 static int nl80211_send_wowlan_patterns(struct sk_buff *msg,
7576                                         struct cfg80211_registered_device *rdev)
7577 {
7578         struct cfg80211_wowlan *wowlan = rdev->wiphy.wowlan_config;
7579         struct nlattr *nl_pats, *nl_pat;
7580         int i, pat_len;
7581
7582         if (!wowlan->n_patterns)
7583                 return 0;
7584
7585         nl_pats = nla_nest_start(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN);
7586         if (!nl_pats)
7587                 return -ENOBUFS;
7588
7589         for (i = 0; i < wowlan->n_patterns; i++) {
7590                 nl_pat = nla_nest_start(msg, i + 1);
7591                 if (!nl_pat)
7592                         return -ENOBUFS;
7593                 pat_len = wowlan->patterns[i].pattern_len;
7594                 if (nla_put(msg, NL80211_WOWLAN_PKTPAT_MASK,
7595                             DIV_ROUND_UP(pat_len, 8),
7596                             wowlan->patterns[i].mask) ||
7597                     nla_put(msg, NL80211_WOWLAN_PKTPAT_PATTERN,
7598                             pat_len, wowlan->patterns[i].pattern) ||
7599                     nla_put_u32(msg, NL80211_WOWLAN_PKTPAT_OFFSET,
7600                                 wowlan->patterns[i].pkt_offset))
7601                         return -ENOBUFS;
7602                 nla_nest_end(msg, nl_pat);
7603         }
7604         nla_nest_end(msg, nl_pats);
7605
7606         return 0;
7607 }
7608
7609 static int nl80211_send_wowlan_tcp(struct sk_buff *msg,
7610                                    struct cfg80211_wowlan_tcp *tcp)
7611 {
7612         struct nlattr *nl_tcp;
7613
7614         if (!tcp)
7615                 return 0;
7616
7617         nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
7618         if (!nl_tcp)
7619                 return -ENOBUFS;
7620
7621         if (nla_put_be32(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) ||
7622             nla_put_be32(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) ||
7623             nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) ||
7624             nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) ||
7625             nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) ||
7626             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
7627                     tcp->payload_len, tcp->payload) ||
7628             nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
7629                         tcp->data_interval) ||
7630             nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
7631                     tcp->wake_len, tcp->wake_data) ||
7632             nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK,
7633                     DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask))
7634                 return -ENOBUFS;
7635
7636         if (tcp->payload_seq.len &&
7637             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ,
7638                     sizeof(tcp->payload_seq), &tcp->payload_seq))
7639                 return -ENOBUFS;
7640
7641         if (tcp->payload_tok.len &&
7642             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
7643                     sizeof(tcp->payload_tok) + tcp->tokens_size,
7644                     &tcp->payload_tok))
7645                 return -ENOBUFS;
7646
7647         nla_nest_end(msg, nl_tcp);
7648
7649         return 0;
7650 }
7651
7652 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
7653 {
7654         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7655         struct sk_buff *msg;
7656         void *hdr;
7657         u32 size = NLMSG_DEFAULT_SIZE;
7658
7659         if (!rdev->wiphy.wowlan)
7660                 return -EOPNOTSUPP;
7661
7662         if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) {
7663                 /* adjust size to have room for all the data */
7664                 size += rdev->wiphy.wowlan_config->tcp->tokens_size +
7665                         rdev->wiphy.wowlan_config->tcp->payload_len +
7666                         rdev->wiphy.wowlan_config->tcp->wake_len +
7667                         rdev->wiphy.wowlan_config->tcp->wake_len / 8;
7668         }
7669
7670         msg = nlmsg_new(size, GFP_KERNEL);
7671         if (!msg)
7672                 return -ENOMEM;
7673
7674         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7675                              NL80211_CMD_GET_WOWLAN);
7676         if (!hdr)
7677                 goto nla_put_failure;
7678
7679         if (rdev->wiphy.wowlan_config) {
7680                 struct nlattr *nl_wowlan;
7681
7682                 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
7683                 if (!nl_wowlan)
7684                         goto nla_put_failure;
7685
7686                 if ((rdev->wiphy.wowlan_config->any &&
7687                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
7688                     (rdev->wiphy.wowlan_config->disconnect &&
7689                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
7690                     (rdev->wiphy.wowlan_config->magic_pkt &&
7691                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
7692                     (rdev->wiphy.wowlan_config->gtk_rekey_failure &&
7693                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
7694                     (rdev->wiphy.wowlan_config->eap_identity_req &&
7695                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
7696                     (rdev->wiphy.wowlan_config->four_way_handshake &&
7697                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
7698                     (rdev->wiphy.wowlan_config->rfkill_release &&
7699                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
7700                         goto nla_put_failure;
7701
7702                 if (nl80211_send_wowlan_patterns(msg, rdev))
7703                         goto nla_put_failure;
7704
7705                 if (nl80211_send_wowlan_tcp(msg,
7706                                             rdev->wiphy.wowlan_config->tcp))
7707                         goto nla_put_failure;
7708
7709                 nla_nest_end(msg, nl_wowlan);
7710         }
7711
7712         genlmsg_end(msg, hdr);
7713         return genlmsg_reply(msg, info);
7714
7715 nla_put_failure:
7716         nlmsg_free(msg);
7717         return -ENOBUFS;
7718 }
7719
7720 static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev,
7721                                     struct nlattr *attr,
7722                                     struct cfg80211_wowlan *trig)
7723 {
7724         struct nlattr *tb[NUM_NL80211_WOWLAN_TCP];
7725         struct cfg80211_wowlan_tcp *cfg;
7726         struct nl80211_wowlan_tcp_data_token *tok = NULL;
7727         struct nl80211_wowlan_tcp_data_seq *seq = NULL;
7728         u32 size;
7729         u32 data_size, wake_size, tokens_size = 0, wake_mask_size;
7730         int err, port;
7731
7732         if (!rdev->wiphy.wowlan->tcp)
7733                 return -EINVAL;
7734
7735         err = nla_parse(tb, MAX_NL80211_WOWLAN_TCP,
7736                         nla_data(attr), nla_len(attr),
7737                         nl80211_wowlan_tcp_policy);
7738         if (err)
7739                 return err;
7740
7741         if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] ||
7742             !tb[NL80211_WOWLAN_TCP_DST_IPV4] ||
7743             !tb[NL80211_WOWLAN_TCP_DST_MAC] ||
7744             !tb[NL80211_WOWLAN_TCP_DST_PORT] ||
7745             !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] ||
7746             !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] ||
7747             !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] ||
7748             !tb[NL80211_WOWLAN_TCP_WAKE_MASK])
7749                 return -EINVAL;
7750
7751         data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]);
7752         if (data_size > rdev->wiphy.wowlan->tcp->data_payload_max)
7753                 return -EINVAL;
7754
7755         if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) >
7756                         rdev->wiphy.wowlan->tcp->data_interval_max ||
7757             nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0)
7758                 return -EINVAL;
7759
7760         wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]);
7761         if (wake_size > rdev->wiphy.wowlan->tcp->wake_payload_max)
7762                 return -EINVAL;
7763
7764         wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]);
7765         if (wake_mask_size != DIV_ROUND_UP(wake_size, 8))
7766                 return -EINVAL;
7767
7768         if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) {
7769                 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
7770
7771                 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
7772                 tokens_size = tokln - sizeof(*tok);
7773
7774                 if (!tok->len || tokens_size % tok->len)
7775                         return -EINVAL;
7776                 if (!rdev->wiphy.wowlan->tcp->tok)
7777                         return -EINVAL;
7778                 if (tok->len > rdev->wiphy.wowlan->tcp->tok->max_len)
7779                         return -EINVAL;
7780                 if (tok->len < rdev->wiphy.wowlan->tcp->tok->min_len)
7781                         return -EINVAL;
7782                 if (tokens_size > rdev->wiphy.wowlan->tcp->tok->bufsize)
7783                         return -EINVAL;
7784                 if (tok->offset + tok->len > data_size)
7785                         return -EINVAL;
7786         }
7787
7788         if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) {
7789                 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]);
7790                 if (!rdev->wiphy.wowlan->tcp->seq)
7791                         return -EINVAL;
7792                 if (seq->len == 0 || seq->len > 4)
7793                         return -EINVAL;
7794                 if (seq->len + seq->offset > data_size)
7795                         return -EINVAL;
7796         }
7797
7798         size = sizeof(*cfg);
7799         size += data_size;
7800         size += wake_size + wake_mask_size;
7801         size += tokens_size;
7802
7803         cfg = kzalloc(size, GFP_KERNEL);
7804         if (!cfg)
7805                 return -ENOMEM;
7806         cfg->src = nla_get_be32(tb[NL80211_WOWLAN_TCP_SRC_IPV4]);
7807         cfg->dst = nla_get_be32(tb[NL80211_WOWLAN_TCP_DST_IPV4]);
7808         memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]),
7809                ETH_ALEN);
7810         if (tb[NL80211_WOWLAN_TCP_SRC_PORT])
7811                 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]);
7812         else
7813                 port = 0;
7814 #ifdef CONFIG_INET
7815         /* allocate a socket and port for it and use it */
7816         err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM,
7817                             IPPROTO_TCP, &cfg->sock, 1);
7818         if (err) {
7819                 kfree(cfg);
7820                 return err;
7821         }
7822         if (inet_csk_get_port(cfg->sock->sk, port)) {
7823                 sock_release(cfg->sock);
7824                 kfree(cfg);
7825                 return -EADDRINUSE;
7826         }
7827         cfg->src_port = inet_sk(cfg->sock->sk)->inet_num;
7828 #else
7829         if (!port) {
7830                 kfree(cfg);
7831                 return -EINVAL;
7832         }
7833         cfg->src_port = port;
7834 #endif
7835
7836         cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]);
7837         cfg->payload_len = data_size;
7838         cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size;
7839         memcpy((void *)cfg->payload,
7840                nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]),
7841                data_size);
7842         if (seq)
7843                 cfg->payload_seq = *seq;
7844         cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]);
7845         cfg->wake_len = wake_size;
7846         cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size;
7847         memcpy((void *)cfg->wake_data,
7848                nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]),
7849                wake_size);
7850         cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size +
7851                          data_size + wake_size;
7852         memcpy((void *)cfg->wake_mask,
7853                nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]),
7854                wake_mask_size);
7855         if (tok) {
7856                 cfg->tokens_size = tokens_size;
7857                 memcpy(&cfg->payload_tok, tok, sizeof(*tok) + tokens_size);
7858         }
7859
7860         trig->tcp = cfg;
7861
7862         return 0;
7863 }
7864
7865 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
7866 {
7867         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7868         struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
7869         struct cfg80211_wowlan new_triggers = {};
7870         struct cfg80211_wowlan *ntrig;
7871         const struct wiphy_wowlan_support *wowlan = rdev->wiphy.wowlan;
7872         int err, i;
7873         bool prev_enabled = rdev->wiphy.wowlan_config;
7874
7875         if (!wowlan)
7876                 return -EOPNOTSUPP;
7877
7878         if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) {
7879                 cfg80211_rdev_free_wowlan(rdev);
7880                 rdev->wiphy.wowlan_config = NULL;
7881                 goto set_wakeup;
7882         }
7883
7884         err = nla_parse(tb, MAX_NL80211_WOWLAN_TRIG,
7885                         nla_data(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
7886                         nla_len(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
7887                         nl80211_wowlan_policy);
7888         if (err)
7889                 return err;
7890
7891         if (tb[NL80211_WOWLAN_TRIG_ANY]) {
7892                 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
7893                         return -EINVAL;
7894                 new_triggers.any = true;
7895         }
7896
7897         if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
7898                 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
7899                         return -EINVAL;
7900                 new_triggers.disconnect = true;
7901         }
7902
7903         if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
7904                 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
7905                         return -EINVAL;
7906                 new_triggers.magic_pkt = true;
7907         }
7908
7909         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
7910                 return -EINVAL;
7911
7912         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
7913                 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
7914                         return -EINVAL;
7915                 new_triggers.gtk_rekey_failure = true;
7916         }
7917
7918         if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
7919                 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
7920                         return -EINVAL;
7921                 new_triggers.eap_identity_req = true;
7922         }
7923
7924         if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
7925                 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
7926                         return -EINVAL;
7927                 new_triggers.four_way_handshake = true;
7928         }
7929
7930         if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
7931                 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
7932                         return -EINVAL;
7933                 new_triggers.rfkill_release = true;
7934         }
7935
7936         if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
7937                 struct nlattr *pat;
7938                 int n_patterns = 0;
7939                 int rem, pat_len, mask_len, pkt_offset;
7940                 struct nlattr *pat_tb[NUM_NL80211_WOWLAN_PKTPAT];
7941
7942                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
7943                                     rem)
7944                         n_patterns++;
7945                 if (n_patterns > wowlan->n_patterns)
7946                         return -EINVAL;
7947
7948                 new_triggers.patterns = kcalloc(n_patterns,
7949                                                 sizeof(new_triggers.patterns[0]),
7950                                                 GFP_KERNEL);
7951                 if (!new_triggers.patterns)
7952                         return -ENOMEM;
7953
7954                 new_triggers.n_patterns = n_patterns;
7955                 i = 0;
7956
7957                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
7958                                     rem) {
7959                         nla_parse(pat_tb, MAX_NL80211_WOWLAN_PKTPAT,
7960                                   nla_data(pat), nla_len(pat), NULL);
7961                         err = -EINVAL;
7962                         if (!pat_tb[NL80211_WOWLAN_PKTPAT_MASK] ||
7963                             !pat_tb[NL80211_WOWLAN_PKTPAT_PATTERN])
7964                                 goto error;
7965                         pat_len = nla_len(pat_tb[NL80211_WOWLAN_PKTPAT_PATTERN]);
7966                         mask_len = DIV_ROUND_UP(pat_len, 8);
7967                         if (nla_len(pat_tb[NL80211_WOWLAN_PKTPAT_MASK]) !=
7968                             mask_len)
7969                                 goto error;
7970                         if (pat_len > wowlan->pattern_max_len ||
7971                             pat_len < wowlan->pattern_min_len)
7972                                 goto error;
7973
7974                         if (!pat_tb[NL80211_WOWLAN_PKTPAT_OFFSET])
7975                                 pkt_offset = 0;
7976                         else
7977                                 pkt_offset = nla_get_u32(
7978                                         pat_tb[NL80211_WOWLAN_PKTPAT_OFFSET]);
7979                         if (pkt_offset > wowlan->max_pkt_offset)
7980                                 goto error;
7981                         new_triggers.patterns[i].pkt_offset = pkt_offset;
7982
7983                         new_triggers.patterns[i].mask =
7984                                 kmalloc(mask_len + pat_len, GFP_KERNEL);
7985                         if (!new_triggers.patterns[i].mask) {
7986                                 err = -ENOMEM;
7987                                 goto error;
7988                         }
7989                         new_triggers.patterns[i].pattern =
7990                                 new_triggers.patterns[i].mask + mask_len;
7991                         memcpy(new_triggers.patterns[i].mask,
7992                                nla_data(pat_tb[NL80211_WOWLAN_PKTPAT_MASK]),
7993                                mask_len);
7994                         new_triggers.patterns[i].pattern_len = pat_len;
7995                         memcpy(new_triggers.patterns[i].pattern,
7996                                nla_data(pat_tb[NL80211_WOWLAN_PKTPAT_PATTERN]),
7997                                pat_len);
7998                         i++;
7999                 }
8000         }
8001
8002         if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) {
8003                 err = nl80211_parse_wowlan_tcp(
8004                         rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION],
8005                         &new_triggers);
8006                 if (err)
8007                         goto error;
8008         }
8009
8010         ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL);
8011         if (!ntrig) {
8012                 err = -ENOMEM;
8013                 goto error;
8014         }
8015         cfg80211_rdev_free_wowlan(rdev);
8016         rdev->wiphy.wowlan_config = ntrig;
8017
8018  set_wakeup:
8019         if (rdev->ops->set_wakeup &&
8020             prev_enabled != !!rdev->wiphy.wowlan_config)
8021                 rdev_set_wakeup(rdev, rdev->wiphy.wowlan_config);
8022
8023         return 0;
8024  error:
8025         for (i = 0; i < new_triggers.n_patterns; i++)
8026                 kfree(new_triggers.patterns[i].mask);
8027         kfree(new_triggers.patterns);
8028         if (new_triggers.tcp && new_triggers.tcp->sock)
8029                 sock_release(new_triggers.tcp->sock);
8030         kfree(new_triggers.tcp);
8031         return err;
8032 }
8033 #endif
8034
8035 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
8036 {
8037         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8038         struct net_device *dev = info->user_ptr[1];
8039         struct wireless_dev *wdev = dev->ieee80211_ptr;
8040         struct nlattr *tb[NUM_NL80211_REKEY_DATA];
8041         struct cfg80211_gtk_rekey_data rekey_data;
8042         int err;
8043
8044         if (!info->attrs[NL80211_ATTR_REKEY_DATA])
8045                 return -EINVAL;
8046
8047         err = nla_parse(tb, MAX_NL80211_REKEY_DATA,
8048                         nla_data(info->attrs[NL80211_ATTR_REKEY_DATA]),
8049                         nla_len(info->attrs[NL80211_ATTR_REKEY_DATA]),
8050                         nl80211_rekey_policy);
8051         if (err)
8052                 return err;
8053
8054         if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN)
8055                 return -ERANGE;
8056         if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN)
8057                 return -ERANGE;
8058         if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN)
8059                 return -ERANGE;
8060
8061         memcpy(rekey_data.kek, nla_data(tb[NL80211_REKEY_DATA_KEK]),
8062                NL80211_KEK_LEN);
8063         memcpy(rekey_data.kck, nla_data(tb[NL80211_REKEY_DATA_KCK]),
8064                NL80211_KCK_LEN);
8065         memcpy(rekey_data.replay_ctr,
8066                nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]),
8067                NL80211_REPLAY_CTR_LEN);
8068
8069         wdev_lock(wdev);
8070         if (!wdev->current_bss) {
8071                 err = -ENOTCONN;
8072                 goto out;
8073         }
8074
8075         if (!rdev->ops->set_rekey_data) {
8076                 err = -EOPNOTSUPP;
8077                 goto out;
8078         }
8079
8080         err = rdev_set_rekey_data(rdev, dev, &rekey_data);
8081  out:
8082         wdev_unlock(wdev);
8083         return err;
8084 }
8085
8086 static int nl80211_register_unexpected_frame(struct sk_buff *skb,
8087                                              struct genl_info *info)
8088 {
8089         struct net_device *dev = info->user_ptr[1];
8090         struct wireless_dev *wdev = dev->ieee80211_ptr;
8091
8092         if (wdev->iftype != NL80211_IFTYPE_AP &&
8093             wdev->iftype != NL80211_IFTYPE_P2P_GO)
8094                 return -EINVAL;
8095
8096         if (wdev->ap_unexpected_nlportid)
8097                 return -EBUSY;
8098
8099         wdev->ap_unexpected_nlportid = info->snd_portid;
8100         return 0;
8101 }
8102
8103 static int nl80211_probe_client(struct sk_buff *skb,
8104                                 struct genl_info *info)
8105 {
8106         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8107         struct net_device *dev = info->user_ptr[1];
8108         struct wireless_dev *wdev = dev->ieee80211_ptr;
8109         struct sk_buff *msg;
8110         void *hdr;
8111         const u8 *addr;
8112         u64 cookie;
8113         int err;
8114
8115         if (wdev->iftype != NL80211_IFTYPE_AP &&
8116             wdev->iftype != NL80211_IFTYPE_P2P_GO)
8117                 return -EOPNOTSUPP;
8118
8119         if (!info->attrs[NL80211_ATTR_MAC])
8120                 return -EINVAL;
8121
8122         if (!rdev->ops->probe_client)
8123                 return -EOPNOTSUPP;
8124
8125         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8126         if (!msg)
8127                 return -ENOMEM;
8128
8129         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8130                              NL80211_CMD_PROBE_CLIENT);
8131
8132         if (IS_ERR(hdr)) {
8133                 err = PTR_ERR(hdr);
8134                 goto free_msg;
8135         }
8136
8137         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
8138
8139         err = rdev_probe_client(rdev, dev, addr, &cookie);
8140         if (err)
8141                 goto free_msg;
8142
8143         if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
8144                 goto nla_put_failure;
8145
8146         genlmsg_end(msg, hdr);
8147
8148         return genlmsg_reply(msg, info);
8149
8150  nla_put_failure:
8151         err = -ENOBUFS;
8152  free_msg:
8153         nlmsg_free(msg);
8154         return err;
8155 }
8156
8157 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
8158 {
8159         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8160         struct cfg80211_beacon_registration *reg, *nreg;
8161         int rv;
8162
8163         if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS))
8164                 return -EOPNOTSUPP;
8165
8166         nreg = kzalloc(sizeof(*nreg), GFP_KERNEL);
8167         if (!nreg)
8168                 return -ENOMEM;
8169
8170         /* First, check if already registered. */
8171         spin_lock_bh(&rdev->beacon_registrations_lock);
8172         list_for_each_entry(reg, &rdev->beacon_registrations, list) {
8173                 if (reg->nlportid == info->snd_portid) {
8174                         rv = -EALREADY;
8175                         goto out_err;
8176                 }
8177         }
8178         /* Add it to the list */
8179         nreg->nlportid = info->snd_portid;
8180         list_add(&nreg->list, &rdev->beacon_registrations);
8181
8182         spin_unlock_bh(&rdev->beacon_registrations_lock);
8183
8184         return 0;
8185 out_err:
8186         spin_unlock_bh(&rdev->beacon_registrations_lock);
8187         kfree(nreg);
8188         return rv;
8189 }
8190
8191 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info)
8192 {
8193         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8194         struct wireless_dev *wdev = info->user_ptr[1];
8195         int err;
8196
8197         if (!rdev->ops->start_p2p_device)
8198                 return -EOPNOTSUPP;
8199
8200         if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
8201                 return -EOPNOTSUPP;
8202
8203         if (wdev->p2p_started)
8204                 return 0;
8205
8206         err = cfg80211_can_add_interface(rdev, wdev->iftype);
8207         if (err)
8208                 return err;
8209
8210         err = rdev_start_p2p_device(rdev, wdev);
8211         if (err)
8212                 return err;
8213
8214         wdev->p2p_started = true;
8215         rdev->opencount++;
8216
8217         return 0;
8218 }
8219
8220 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info)
8221 {
8222         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8223         struct wireless_dev *wdev = info->user_ptr[1];
8224
8225         if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
8226                 return -EOPNOTSUPP;
8227
8228         if (!rdev->ops->stop_p2p_device)
8229                 return -EOPNOTSUPP;
8230
8231         cfg80211_stop_p2p_device(rdev, wdev);
8232
8233         return 0;
8234 }
8235
8236 static int nl80211_get_protocol_features(struct sk_buff *skb,
8237                                          struct genl_info *info)
8238 {
8239         void *hdr;
8240         struct sk_buff *msg;
8241
8242         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8243         if (!msg)
8244                 return -ENOMEM;
8245
8246         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8247                              NL80211_CMD_GET_PROTOCOL_FEATURES);
8248         if (!hdr)
8249                 goto nla_put_failure;
8250
8251         if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES,
8252                         NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP))
8253                 goto nla_put_failure;
8254
8255         genlmsg_end(msg, hdr);
8256         return genlmsg_reply(msg, info);
8257
8258  nla_put_failure:
8259         kfree_skb(msg);
8260         return -ENOBUFS;
8261 }
8262
8263 static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info)
8264 {
8265         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8266         struct cfg80211_update_ft_ies_params ft_params;
8267         struct net_device *dev = info->user_ptr[1];
8268
8269         if (!rdev->ops->update_ft_ies)
8270                 return -EOPNOTSUPP;
8271
8272         if (!info->attrs[NL80211_ATTR_MDID] ||
8273             !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8274                 return -EINVAL;
8275
8276         memset(&ft_params, 0, sizeof(ft_params));
8277         ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]);
8278         ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8279         ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8280
8281         return rdev_update_ft_ies(rdev, dev, &ft_params);
8282 }
8283
8284 static int nl80211_crit_protocol_start(struct sk_buff *skb,
8285                                        struct genl_info *info)
8286 {
8287         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8288         struct wireless_dev *wdev = info->user_ptr[1];
8289         enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC;
8290         u16 duration;
8291         int ret;
8292
8293         if (!rdev->ops->crit_proto_start)
8294                 return -EOPNOTSUPP;
8295
8296         if (WARN_ON(!rdev->ops->crit_proto_stop))
8297                 return -EINVAL;
8298
8299         if (rdev->crit_proto_nlportid)
8300                 return -EBUSY;
8301
8302         /* determine protocol if provided */
8303         if (info->attrs[NL80211_ATTR_CRIT_PROT_ID])
8304                 proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]);
8305
8306         if (proto >= NUM_NL80211_CRIT_PROTO)
8307                 return -EINVAL;
8308
8309         /* timeout must be provided */
8310         if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION])
8311                 return -EINVAL;
8312
8313         duration =
8314                 nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]);
8315
8316         if (duration > NL80211_CRIT_PROTO_MAX_DURATION)
8317                 return -ERANGE;
8318
8319         ret = rdev_crit_proto_start(rdev, wdev, proto, duration);
8320         if (!ret)
8321                 rdev->crit_proto_nlportid = info->snd_portid;
8322
8323         return ret;
8324 }
8325
8326 static int nl80211_crit_protocol_stop(struct sk_buff *skb,
8327                                       struct genl_info *info)
8328 {
8329         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8330         struct wireless_dev *wdev = info->user_ptr[1];
8331
8332         if (!rdev->ops->crit_proto_stop)
8333                 return -EOPNOTSUPP;
8334
8335         if (rdev->crit_proto_nlportid) {
8336                 rdev->crit_proto_nlportid = 0;
8337                 rdev_crit_proto_stop(rdev, wdev);
8338         }
8339         return 0;
8340 }
8341
8342 #define NL80211_FLAG_NEED_WIPHY         0x01
8343 #define NL80211_FLAG_NEED_NETDEV        0x02
8344 #define NL80211_FLAG_NEED_RTNL          0x04
8345 #define NL80211_FLAG_CHECK_NETDEV_UP    0x08
8346 #define NL80211_FLAG_NEED_NETDEV_UP     (NL80211_FLAG_NEED_NETDEV |\
8347                                          NL80211_FLAG_CHECK_NETDEV_UP)
8348 #define NL80211_FLAG_NEED_WDEV          0x10
8349 /* If a netdev is associated, it must be UP, P2P must be started */
8350 #define NL80211_FLAG_NEED_WDEV_UP       (NL80211_FLAG_NEED_WDEV |\
8351                                          NL80211_FLAG_CHECK_NETDEV_UP)
8352
8353 static int nl80211_pre_doit(struct genl_ops *ops, struct sk_buff *skb,
8354                             struct genl_info *info)
8355 {
8356         struct cfg80211_registered_device *rdev;
8357         struct wireless_dev *wdev;
8358         struct net_device *dev;
8359         bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
8360
8361         if (rtnl)
8362                 rtnl_lock();
8363
8364         if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
8365                 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
8366                 if (IS_ERR(rdev)) {
8367                         if (rtnl)
8368                                 rtnl_unlock();
8369                         return PTR_ERR(rdev);
8370                 }
8371                 info->user_ptr[0] = rdev;
8372         } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV ||
8373                    ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
8374                 ASSERT_RTNL();
8375
8376                 wdev = __cfg80211_wdev_from_attrs(genl_info_net(info),
8377                                                   info->attrs);
8378                 if (IS_ERR(wdev)) {
8379                         if (rtnl)
8380                                 rtnl_unlock();
8381                         return PTR_ERR(wdev);
8382                 }
8383
8384                 dev = wdev->netdev;
8385                 rdev = wiphy_to_dev(wdev->wiphy);
8386
8387                 if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
8388                         if (!dev) {
8389                                 if (rtnl)
8390                                         rtnl_unlock();
8391                                 return -EINVAL;
8392                         }
8393
8394                         info->user_ptr[1] = dev;
8395                 } else {
8396                         info->user_ptr[1] = wdev;
8397                 }
8398
8399                 if (dev) {
8400                         if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
8401                             !netif_running(dev)) {
8402                                 if (rtnl)
8403                                         rtnl_unlock();
8404                                 return -ENETDOWN;
8405                         }
8406
8407                         dev_hold(dev);
8408                 } else if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP) {
8409                         if (!wdev->p2p_started) {
8410                                 if (rtnl)
8411                                         rtnl_unlock();
8412                                 return -ENETDOWN;
8413                         }
8414                 }
8415
8416                 info->user_ptr[0] = rdev;
8417         }
8418
8419         return 0;
8420 }
8421
8422 static void nl80211_post_doit(struct genl_ops *ops, struct sk_buff *skb,
8423                               struct genl_info *info)
8424 {
8425         if (info->user_ptr[1]) {
8426                 if (ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
8427                         struct wireless_dev *wdev = info->user_ptr[1];
8428
8429                         if (wdev->netdev)
8430                                 dev_put(wdev->netdev);
8431                 } else {
8432                         dev_put(info->user_ptr[1]);
8433                 }
8434         }
8435         if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
8436                 rtnl_unlock();
8437 }
8438
8439 static struct genl_ops nl80211_ops[] = {
8440         {
8441                 .cmd = NL80211_CMD_GET_WIPHY,
8442                 .doit = nl80211_get_wiphy,
8443                 .dumpit = nl80211_dump_wiphy,
8444                 .done = nl80211_dump_wiphy_done,
8445                 .policy = nl80211_policy,
8446                 /* can be retrieved by unprivileged users */
8447                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
8448                                   NL80211_FLAG_NEED_RTNL,
8449         },
8450         {
8451                 .cmd = NL80211_CMD_SET_WIPHY,
8452                 .doit = nl80211_set_wiphy,
8453                 .policy = nl80211_policy,
8454                 .flags = GENL_ADMIN_PERM,
8455                 .internal_flags = NL80211_FLAG_NEED_RTNL,
8456         },
8457         {
8458                 .cmd = NL80211_CMD_GET_INTERFACE,
8459                 .doit = nl80211_get_interface,
8460                 .dumpit = nl80211_dump_interface,
8461                 .policy = nl80211_policy,
8462                 /* can be retrieved by unprivileged users */
8463                 .internal_flags = NL80211_FLAG_NEED_WDEV |
8464                                   NL80211_FLAG_NEED_RTNL,
8465         },
8466         {
8467                 .cmd = NL80211_CMD_SET_INTERFACE,
8468                 .doit = nl80211_set_interface,
8469                 .policy = nl80211_policy,
8470                 .flags = GENL_ADMIN_PERM,
8471                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
8472                                   NL80211_FLAG_NEED_RTNL,
8473         },
8474         {
8475                 .cmd = NL80211_CMD_NEW_INTERFACE,
8476                 .doit = nl80211_new_interface,
8477                 .policy = nl80211_policy,
8478                 .flags = GENL_ADMIN_PERM,
8479                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
8480                                   NL80211_FLAG_NEED_RTNL,
8481         },
8482         {
8483                 .cmd = NL80211_CMD_DEL_INTERFACE,
8484                 .doit = nl80211_del_interface,
8485                 .policy = nl80211_policy,
8486                 .flags = GENL_ADMIN_PERM,
8487                 .internal_flags = NL80211_FLAG_NEED_WDEV |
8488                                   NL80211_FLAG_NEED_RTNL,
8489         },
8490         {
8491                 .cmd = NL80211_CMD_GET_KEY,
8492                 .doit = nl80211_get_key,
8493                 .policy = nl80211_policy,
8494                 .flags = GENL_ADMIN_PERM,
8495                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8496                                   NL80211_FLAG_NEED_RTNL,
8497         },
8498         {
8499                 .cmd = NL80211_CMD_SET_KEY,
8500                 .doit = nl80211_set_key,
8501                 .policy = nl80211_policy,
8502                 .flags = GENL_ADMIN_PERM,
8503                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8504                                   NL80211_FLAG_NEED_RTNL,
8505         },
8506         {
8507                 .cmd = NL80211_CMD_NEW_KEY,
8508                 .doit = nl80211_new_key,
8509                 .policy = nl80211_policy,
8510                 .flags = GENL_ADMIN_PERM,
8511                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8512                                   NL80211_FLAG_NEED_RTNL,
8513         },
8514         {
8515                 .cmd = NL80211_CMD_DEL_KEY,
8516                 .doit = nl80211_del_key,
8517                 .policy = nl80211_policy,
8518                 .flags = GENL_ADMIN_PERM,
8519                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8520                                   NL80211_FLAG_NEED_RTNL,
8521         },
8522         {
8523                 .cmd = NL80211_CMD_SET_BEACON,
8524                 .policy = nl80211_policy,
8525                 .flags = GENL_ADMIN_PERM,
8526                 .doit = nl80211_set_beacon,
8527                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8528                                   NL80211_FLAG_NEED_RTNL,
8529         },
8530         {
8531                 .cmd = NL80211_CMD_START_AP,
8532                 .policy = nl80211_policy,
8533                 .flags = GENL_ADMIN_PERM,
8534                 .doit = nl80211_start_ap,
8535                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8536                                   NL80211_FLAG_NEED_RTNL,
8537         },
8538         {
8539                 .cmd = NL80211_CMD_STOP_AP,
8540                 .policy = nl80211_policy,
8541                 .flags = GENL_ADMIN_PERM,
8542                 .doit = nl80211_stop_ap,
8543                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8544                                   NL80211_FLAG_NEED_RTNL,
8545         },
8546         {
8547                 .cmd = NL80211_CMD_GET_STATION,
8548                 .doit = nl80211_get_station,
8549                 .dumpit = nl80211_dump_station,
8550                 .policy = nl80211_policy,
8551                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
8552                                   NL80211_FLAG_NEED_RTNL,
8553         },
8554         {
8555                 .cmd = NL80211_CMD_SET_STATION,
8556                 .doit = nl80211_set_station,
8557                 .policy = nl80211_policy,
8558                 .flags = GENL_ADMIN_PERM,
8559                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8560                                   NL80211_FLAG_NEED_RTNL,
8561         },
8562         {
8563                 .cmd = NL80211_CMD_NEW_STATION,
8564                 .doit = nl80211_new_station,
8565                 .policy = nl80211_policy,
8566                 .flags = GENL_ADMIN_PERM,
8567                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8568                                   NL80211_FLAG_NEED_RTNL,
8569         },
8570         {
8571                 .cmd = NL80211_CMD_DEL_STATION,
8572                 .doit = nl80211_del_station,
8573                 .policy = nl80211_policy,
8574                 .flags = GENL_ADMIN_PERM,
8575                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8576                                   NL80211_FLAG_NEED_RTNL,
8577         },
8578         {
8579                 .cmd = NL80211_CMD_GET_MPATH,
8580                 .doit = nl80211_get_mpath,
8581                 .dumpit = nl80211_dump_mpath,
8582                 .policy = nl80211_policy,
8583                 .flags = GENL_ADMIN_PERM,
8584                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8585                                   NL80211_FLAG_NEED_RTNL,
8586         },
8587         {
8588                 .cmd = NL80211_CMD_SET_MPATH,
8589                 .doit = nl80211_set_mpath,
8590                 .policy = nl80211_policy,
8591                 .flags = GENL_ADMIN_PERM,
8592                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8593                                   NL80211_FLAG_NEED_RTNL,
8594         },
8595         {
8596                 .cmd = NL80211_CMD_NEW_MPATH,
8597                 .doit = nl80211_new_mpath,
8598                 .policy = nl80211_policy,
8599                 .flags = GENL_ADMIN_PERM,
8600                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8601                                   NL80211_FLAG_NEED_RTNL,
8602         },
8603         {
8604                 .cmd = NL80211_CMD_DEL_MPATH,
8605                 .doit = nl80211_del_mpath,
8606                 .policy = nl80211_policy,
8607                 .flags = GENL_ADMIN_PERM,
8608                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8609                                   NL80211_FLAG_NEED_RTNL,
8610         },
8611         {
8612                 .cmd = NL80211_CMD_SET_BSS,
8613                 .doit = nl80211_set_bss,
8614                 .policy = nl80211_policy,
8615                 .flags = GENL_ADMIN_PERM,
8616                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8617                                   NL80211_FLAG_NEED_RTNL,
8618         },
8619         {
8620                 .cmd = NL80211_CMD_GET_REG,
8621                 .doit = nl80211_get_reg,
8622                 .policy = nl80211_policy,
8623                 .internal_flags = NL80211_FLAG_NEED_RTNL,
8624                 /* can be retrieved by unprivileged users */
8625         },
8626         {
8627                 .cmd = NL80211_CMD_SET_REG,
8628                 .doit = nl80211_set_reg,
8629                 .policy = nl80211_policy,
8630                 .flags = GENL_ADMIN_PERM,
8631                 .internal_flags = NL80211_FLAG_NEED_RTNL,
8632         },
8633         {
8634                 .cmd = NL80211_CMD_REQ_SET_REG,
8635                 .doit = nl80211_req_set_reg,
8636                 .policy = nl80211_policy,
8637                 .flags = GENL_ADMIN_PERM,
8638         },
8639         {
8640                 .cmd = NL80211_CMD_GET_MESH_CONFIG,
8641                 .doit = nl80211_get_mesh_config,
8642                 .policy = nl80211_policy,
8643                 /* can be retrieved by unprivileged users */
8644                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8645                                   NL80211_FLAG_NEED_RTNL,
8646         },
8647         {
8648                 .cmd = NL80211_CMD_SET_MESH_CONFIG,
8649                 .doit = nl80211_update_mesh_config,
8650                 .policy = nl80211_policy,
8651                 .flags = GENL_ADMIN_PERM,
8652                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8653                                   NL80211_FLAG_NEED_RTNL,
8654         },
8655         {
8656                 .cmd = NL80211_CMD_TRIGGER_SCAN,
8657                 .doit = nl80211_trigger_scan,
8658                 .policy = nl80211_policy,
8659                 .flags = GENL_ADMIN_PERM,
8660                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
8661                                   NL80211_FLAG_NEED_RTNL,
8662         },
8663         {
8664                 .cmd = NL80211_CMD_GET_SCAN,
8665                 .policy = nl80211_policy,
8666                 .dumpit = nl80211_dump_scan,
8667         },
8668         {
8669                 .cmd = NL80211_CMD_START_SCHED_SCAN,
8670                 .doit = nl80211_start_sched_scan,
8671                 .policy = nl80211_policy,
8672                 .flags = GENL_ADMIN_PERM,
8673                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8674                                   NL80211_FLAG_NEED_RTNL,
8675         },
8676         {
8677                 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
8678                 .doit = nl80211_stop_sched_scan,
8679                 .policy = nl80211_policy,
8680                 .flags = GENL_ADMIN_PERM,
8681                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8682                                   NL80211_FLAG_NEED_RTNL,
8683         },
8684         {
8685                 .cmd = NL80211_CMD_AUTHENTICATE,
8686                 .doit = nl80211_authenticate,
8687                 .policy = nl80211_policy,
8688                 .flags = GENL_ADMIN_PERM,
8689                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8690                                   NL80211_FLAG_NEED_RTNL,
8691         },
8692         {
8693                 .cmd = NL80211_CMD_ASSOCIATE,
8694                 .doit = nl80211_associate,
8695                 .policy = nl80211_policy,
8696                 .flags = GENL_ADMIN_PERM,
8697                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8698                                   NL80211_FLAG_NEED_RTNL,
8699         },
8700         {
8701                 .cmd = NL80211_CMD_DEAUTHENTICATE,
8702                 .doit = nl80211_deauthenticate,
8703                 .policy = nl80211_policy,
8704                 .flags = GENL_ADMIN_PERM,
8705                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8706                                   NL80211_FLAG_NEED_RTNL,
8707         },
8708         {
8709                 .cmd = NL80211_CMD_DISASSOCIATE,
8710                 .doit = nl80211_disassociate,
8711                 .policy = nl80211_policy,
8712                 .flags = GENL_ADMIN_PERM,
8713                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8714                                   NL80211_FLAG_NEED_RTNL,
8715         },
8716         {
8717                 .cmd = NL80211_CMD_JOIN_IBSS,
8718                 .doit = nl80211_join_ibss,
8719                 .policy = nl80211_policy,
8720                 .flags = GENL_ADMIN_PERM,
8721                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8722                                   NL80211_FLAG_NEED_RTNL,
8723         },
8724         {
8725                 .cmd = NL80211_CMD_LEAVE_IBSS,
8726                 .doit = nl80211_leave_ibss,
8727                 .policy = nl80211_policy,
8728                 .flags = GENL_ADMIN_PERM,
8729                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8730                                   NL80211_FLAG_NEED_RTNL,
8731         },
8732 #ifdef CONFIG_NL80211_TESTMODE
8733         {
8734                 .cmd = NL80211_CMD_TESTMODE,
8735                 .doit = nl80211_testmode_do,
8736                 .dumpit = nl80211_testmode_dump,
8737                 .policy = nl80211_policy,
8738                 .flags = GENL_ADMIN_PERM,
8739                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
8740                                   NL80211_FLAG_NEED_RTNL,
8741         },
8742 #endif
8743         {
8744                 .cmd = NL80211_CMD_CONNECT,
8745                 .doit = nl80211_connect,
8746                 .policy = nl80211_policy,
8747                 .flags = GENL_ADMIN_PERM,
8748                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8749                                   NL80211_FLAG_NEED_RTNL,
8750         },
8751         {
8752                 .cmd = NL80211_CMD_DISCONNECT,
8753                 .doit = nl80211_disconnect,
8754                 .policy = nl80211_policy,
8755                 .flags = GENL_ADMIN_PERM,
8756                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8757                                   NL80211_FLAG_NEED_RTNL,
8758         },
8759         {
8760                 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
8761                 .doit = nl80211_wiphy_netns,
8762                 .policy = nl80211_policy,
8763                 .flags = GENL_ADMIN_PERM,
8764                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
8765                                   NL80211_FLAG_NEED_RTNL,
8766         },
8767         {
8768                 .cmd = NL80211_CMD_GET_SURVEY,
8769                 .policy = nl80211_policy,
8770                 .dumpit = nl80211_dump_survey,
8771         },
8772         {
8773                 .cmd = NL80211_CMD_SET_PMKSA,
8774                 .doit = nl80211_setdel_pmksa,
8775                 .policy = nl80211_policy,
8776                 .flags = GENL_ADMIN_PERM,
8777                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8778                                   NL80211_FLAG_NEED_RTNL,
8779         },
8780         {
8781                 .cmd = NL80211_CMD_DEL_PMKSA,
8782                 .doit = nl80211_setdel_pmksa,
8783                 .policy = nl80211_policy,
8784                 .flags = GENL_ADMIN_PERM,
8785                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8786                                   NL80211_FLAG_NEED_RTNL,
8787         },
8788         {
8789                 .cmd = NL80211_CMD_FLUSH_PMKSA,
8790                 .doit = nl80211_flush_pmksa,
8791                 .policy = nl80211_policy,
8792                 .flags = GENL_ADMIN_PERM,
8793                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8794                                   NL80211_FLAG_NEED_RTNL,
8795         },
8796         {
8797                 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
8798                 .doit = nl80211_remain_on_channel,
8799                 .policy = nl80211_policy,
8800                 .flags = GENL_ADMIN_PERM,
8801                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
8802                                   NL80211_FLAG_NEED_RTNL,
8803         },
8804         {
8805                 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
8806                 .doit = nl80211_cancel_remain_on_channel,
8807                 .policy = nl80211_policy,
8808                 .flags = GENL_ADMIN_PERM,
8809                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
8810                                   NL80211_FLAG_NEED_RTNL,
8811         },
8812         {
8813                 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
8814                 .doit = nl80211_set_tx_bitrate_mask,
8815                 .policy = nl80211_policy,
8816                 .flags = GENL_ADMIN_PERM,
8817                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
8818                                   NL80211_FLAG_NEED_RTNL,
8819         },
8820         {
8821                 .cmd = NL80211_CMD_REGISTER_FRAME,
8822                 .doit = nl80211_register_mgmt,
8823                 .policy = nl80211_policy,
8824                 .flags = GENL_ADMIN_PERM,
8825                 .internal_flags = NL80211_FLAG_NEED_WDEV |
8826                                   NL80211_FLAG_NEED_RTNL,
8827         },
8828         {
8829                 .cmd = NL80211_CMD_FRAME,
8830                 .doit = nl80211_tx_mgmt,
8831                 .policy = nl80211_policy,
8832                 .flags = GENL_ADMIN_PERM,
8833                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
8834                                   NL80211_FLAG_NEED_RTNL,
8835         },
8836         {
8837                 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
8838                 .doit = nl80211_tx_mgmt_cancel_wait,
8839                 .policy = nl80211_policy,
8840                 .flags = GENL_ADMIN_PERM,
8841                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
8842                                   NL80211_FLAG_NEED_RTNL,
8843         },
8844         {
8845                 .cmd = NL80211_CMD_SET_POWER_SAVE,
8846                 .doit = nl80211_set_power_save,
8847                 .policy = nl80211_policy,
8848                 .flags = GENL_ADMIN_PERM,
8849                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
8850                                   NL80211_FLAG_NEED_RTNL,
8851         },
8852         {
8853                 .cmd = NL80211_CMD_GET_POWER_SAVE,
8854                 .doit = nl80211_get_power_save,
8855                 .policy = nl80211_policy,
8856                 /* can be retrieved by unprivileged users */
8857                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
8858                                   NL80211_FLAG_NEED_RTNL,
8859         },
8860         {
8861                 .cmd = NL80211_CMD_SET_CQM,
8862                 .doit = nl80211_set_cqm,
8863                 .policy = nl80211_policy,
8864                 .flags = GENL_ADMIN_PERM,
8865                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
8866                                   NL80211_FLAG_NEED_RTNL,
8867         },
8868         {
8869                 .cmd = NL80211_CMD_SET_CHANNEL,
8870                 .doit = nl80211_set_channel,
8871                 .policy = nl80211_policy,
8872                 .flags = GENL_ADMIN_PERM,
8873                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
8874                                   NL80211_FLAG_NEED_RTNL,
8875         },
8876         {
8877                 .cmd = NL80211_CMD_SET_WDS_PEER,
8878                 .doit = nl80211_set_wds_peer,
8879                 .policy = nl80211_policy,
8880                 .flags = GENL_ADMIN_PERM,
8881                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
8882                                   NL80211_FLAG_NEED_RTNL,
8883         },
8884         {
8885                 .cmd = NL80211_CMD_JOIN_MESH,
8886                 .doit = nl80211_join_mesh,
8887                 .policy = nl80211_policy,
8888                 .flags = GENL_ADMIN_PERM,
8889                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8890                                   NL80211_FLAG_NEED_RTNL,
8891         },
8892         {
8893                 .cmd = NL80211_CMD_LEAVE_MESH,
8894                 .doit = nl80211_leave_mesh,
8895                 .policy = nl80211_policy,
8896                 .flags = GENL_ADMIN_PERM,
8897                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8898                                   NL80211_FLAG_NEED_RTNL,
8899         },
8900 #ifdef CONFIG_PM
8901         {
8902                 .cmd = NL80211_CMD_GET_WOWLAN,
8903                 .doit = nl80211_get_wowlan,
8904                 .policy = nl80211_policy,
8905                 /* can be retrieved by unprivileged users */
8906                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
8907                                   NL80211_FLAG_NEED_RTNL,
8908         },
8909         {
8910                 .cmd = NL80211_CMD_SET_WOWLAN,
8911                 .doit = nl80211_set_wowlan,
8912                 .policy = nl80211_policy,
8913                 .flags = GENL_ADMIN_PERM,
8914                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
8915                                   NL80211_FLAG_NEED_RTNL,
8916         },
8917 #endif
8918         {
8919                 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
8920                 .doit = nl80211_set_rekey_data,
8921                 .policy = nl80211_policy,
8922                 .flags = GENL_ADMIN_PERM,
8923                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8924                                   NL80211_FLAG_NEED_RTNL,
8925         },
8926         {
8927                 .cmd = NL80211_CMD_TDLS_MGMT,
8928                 .doit = nl80211_tdls_mgmt,
8929                 .policy = nl80211_policy,
8930                 .flags = GENL_ADMIN_PERM,
8931                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8932                                   NL80211_FLAG_NEED_RTNL,
8933         },
8934         {
8935                 .cmd = NL80211_CMD_TDLS_OPER,
8936                 .doit = nl80211_tdls_oper,
8937                 .policy = nl80211_policy,
8938                 .flags = GENL_ADMIN_PERM,
8939                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8940                                   NL80211_FLAG_NEED_RTNL,
8941         },
8942         {
8943                 .cmd = NL80211_CMD_UNEXPECTED_FRAME,
8944                 .doit = nl80211_register_unexpected_frame,
8945                 .policy = nl80211_policy,
8946                 .flags = GENL_ADMIN_PERM,
8947                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
8948                                   NL80211_FLAG_NEED_RTNL,
8949         },
8950         {
8951                 .cmd = NL80211_CMD_PROBE_CLIENT,
8952                 .doit = nl80211_probe_client,
8953                 .policy = nl80211_policy,
8954                 .flags = GENL_ADMIN_PERM,
8955                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8956                                   NL80211_FLAG_NEED_RTNL,
8957         },
8958         {
8959                 .cmd = NL80211_CMD_REGISTER_BEACONS,
8960                 .doit = nl80211_register_beacons,
8961                 .policy = nl80211_policy,
8962                 .flags = GENL_ADMIN_PERM,
8963                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
8964                                   NL80211_FLAG_NEED_RTNL,
8965         },
8966         {
8967                 .cmd = NL80211_CMD_SET_NOACK_MAP,
8968                 .doit = nl80211_set_noack_map,
8969                 .policy = nl80211_policy,
8970                 .flags = GENL_ADMIN_PERM,
8971                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
8972                                   NL80211_FLAG_NEED_RTNL,
8973         },
8974         {
8975                 .cmd = NL80211_CMD_START_P2P_DEVICE,
8976                 .doit = nl80211_start_p2p_device,
8977                 .policy = nl80211_policy,
8978                 .flags = GENL_ADMIN_PERM,
8979                 .internal_flags = NL80211_FLAG_NEED_WDEV |
8980                                   NL80211_FLAG_NEED_RTNL,
8981         },
8982         {
8983                 .cmd = NL80211_CMD_STOP_P2P_DEVICE,
8984                 .doit = nl80211_stop_p2p_device,
8985                 .policy = nl80211_policy,
8986                 .flags = GENL_ADMIN_PERM,
8987                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
8988                                   NL80211_FLAG_NEED_RTNL,
8989         },
8990         {
8991                 .cmd = NL80211_CMD_SET_MCAST_RATE,
8992                 .doit = nl80211_set_mcast_rate,
8993                 .policy = nl80211_policy,
8994                 .flags = GENL_ADMIN_PERM,
8995                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
8996                                   NL80211_FLAG_NEED_RTNL,
8997         },
8998         {
8999                 .cmd = NL80211_CMD_SET_MAC_ACL,
9000                 .doit = nl80211_set_mac_acl,
9001                 .policy = nl80211_policy,
9002                 .flags = GENL_ADMIN_PERM,
9003                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9004                                   NL80211_FLAG_NEED_RTNL,
9005         },
9006         {
9007                 .cmd = NL80211_CMD_RADAR_DETECT,
9008                 .doit = nl80211_start_radar_detection,
9009                 .policy = nl80211_policy,
9010                 .flags = GENL_ADMIN_PERM,
9011                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9012                                   NL80211_FLAG_NEED_RTNL,
9013         },
9014         {
9015                 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES,
9016                 .doit = nl80211_get_protocol_features,
9017                 .policy = nl80211_policy,
9018         },
9019         {
9020                 .cmd = NL80211_CMD_UPDATE_FT_IES,
9021                 .doit = nl80211_update_ft_ies,
9022                 .policy = nl80211_policy,
9023                 .flags = GENL_ADMIN_PERM,
9024                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9025                                   NL80211_FLAG_NEED_RTNL,
9026         },
9027         {
9028                 .cmd = NL80211_CMD_CRIT_PROTOCOL_START,
9029                 .doit = nl80211_crit_protocol_start,
9030                 .policy = nl80211_policy,
9031                 .flags = GENL_ADMIN_PERM,
9032                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
9033                                   NL80211_FLAG_NEED_RTNL,
9034         },
9035         {
9036                 .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP,
9037                 .doit = nl80211_crit_protocol_stop,
9038                 .policy = nl80211_policy,
9039                 .flags = GENL_ADMIN_PERM,
9040                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
9041                                   NL80211_FLAG_NEED_RTNL,
9042         }
9043 };
9044
9045 static struct genl_multicast_group nl80211_mlme_mcgrp = {
9046         .name = "mlme",
9047 };
9048
9049 /* multicast groups */
9050 static struct genl_multicast_group nl80211_config_mcgrp = {
9051         .name = "config",
9052 };
9053 static struct genl_multicast_group nl80211_scan_mcgrp = {
9054         .name = "scan",
9055 };
9056 static struct genl_multicast_group nl80211_regulatory_mcgrp = {
9057         .name = "regulatory",
9058 };
9059
9060 /* notification functions */
9061
9062 void nl80211_notify_dev_rename(struct cfg80211_registered_device *rdev)
9063 {
9064         struct sk_buff *msg;
9065         struct nl80211_dump_wiphy_state state = {};
9066
9067         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9068         if (!msg)
9069                 return;
9070
9071         if (nl80211_send_wiphy(rdev, msg, 0, 0, 0, &state) < 0) {
9072                 nlmsg_free(msg);
9073                 return;
9074         }
9075
9076         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9077                                 nl80211_config_mcgrp.id, GFP_KERNEL);
9078 }
9079
9080 static int nl80211_add_scan_req(struct sk_buff *msg,
9081                                 struct cfg80211_registered_device *rdev)
9082 {
9083         struct cfg80211_scan_request *req = rdev->scan_req;
9084         struct nlattr *nest;
9085         int i;
9086
9087         if (WARN_ON(!req))
9088                 return 0;
9089
9090         nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS);
9091         if (!nest)
9092                 goto nla_put_failure;
9093         for (i = 0; i < req->n_ssids; i++) {
9094                 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid))
9095                         goto nla_put_failure;
9096         }
9097         nla_nest_end(msg, nest);
9098
9099         nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
9100         if (!nest)
9101                 goto nla_put_failure;
9102         for (i = 0; i < req->n_channels; i++) {
9103                 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
9104                         goto nla_put_failure;
9105         }
9106         nla_nest_end(msg, nest);
9107
9108         if (req->ie &&
9109             nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie))
9110                 goto nla_put_failure;
9111
9112         if (req->flags)
9113                 nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags);
9114
9115         return 0;
9116  nla_put_failure:
9117         return -ENOBUFS;
9118 }
9119
9120 static int nl80211_send_scan_msg(struct sk_buff *msg,
9121                                  struct cfg80211_registered_device *rdev,
9122                                  struct wireless_dev *wdev,
9123                                  u32 portid, u32 seq, int flags,
9124                                  u32 cmd)
9125 {
9126         void *hdr;
9127
9128         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
9129         if (!hdr)
9130                 return -1;
9131
9132         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9133             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
9134                                          wdev->netdev->ifindex)) ||
9135             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
9136                 goto nla_put_failure;
9137
9138         /* ignore errors and send incomplete event anyway */
9139         nl80211_add_scan_req(msg, rdev);
9140
9141         return genlmsg_end(msg, hdr);
9142
9143  nla_put_failure:
9144         genlmsg_cancel(msg, hdr);
9145         return -EMSGSIZE;
9146 }
9147
9148 static int
9149 nl80211_send_sched_scan_msg(struct sk_buff *msg,
9150                             struct cfg80211_registered_device *rdev,
9151                             struct net_device *netdev,
9152                             u32 portid, u32 seq, int flags, u32 cmd)
9153 {
9154         void *hdr;
9155
9156         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
9157         if (!hdr)
9158                 return -1;
9159
9160         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9161             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
9162                 goto nla_put_failure;
9163
9164         return genlmsg_end(msg, hdr);
9165
9166  nla_put_failure:
9167         genlmsg_cancel(msg, hdr);
9168         return -EMSGSIZE;
9169 }
9170
9171 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
9172                              struct wireless_dev *wdev)
9173 {
9174         struct sk_buff *msg;
9175
9176         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9177         if (!msg)
9178                 return;
9179
9180         if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
9181                                   NL80211_CMD_TRIGGER_SCAN) < 0) {
9182                 nlmsg_free(msg);
9183                 return;
9184         }
9185
9186         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9187                                 nl80211_scan_mcgrp.id, GFP_KERNEL);
9188 }
9189
9190 void nl80211_send_scan_done(struct cfg80211_registered_device *rdev,
9191                             struct wireless_dev *wdev)
9192 {
9193         struct sk_buff *msg;
9194
9195         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9196         if (!msg)
9197                 return;
9198
9199         if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
9200                                   NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
9201                 nlmsg_free(msg);
9202                 return;
9203         }
9204
9205         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9206                                 nl80211_scan_mcgrp.id, GFP_KERNEL);
9207 }
9208
9209 void nl80211_send_scan_aborted(struct cfg80211_registered_device *rdev,
9210                                struct wireless_dev *wdev)
9211 {
9212         struct sk_buff *msg;
9213
9214         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9215         if (!msg)
9216                 return;
9217
9218         if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
9219                                   NL80211_CMD_SCAN_ABORTED) < 0) {
9220                 nlmsg_free(msg);
9221                 return;
9222         }
9223
9224         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9225                                 nl80211_scan_mcgrp.id, GFP_KERNEL);
9226 }
9227
9228 void nl80211_send_sched_scan_results(struct cfg80211_registered_device *rdev,
9229                                      struct net_device *netdev)
9230 {
9231         struct sk_buff *msg;
9232
9233         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9234         if (!msg)
9235                 return;
9236
9237         if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0,
9238                                         NL80211_CMD_SCHED_SCAN_RESULTS) < 0) {
9239                 nlmsg_free(msg);
9240                 return;
9241         }
9242
9243         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9244                                 nl80211_scan_mcgrp.id, GFP_KERNEL);
9245 }
9246
9247 void nl80211_send_sched_scan(struct cfg80211_registered_device *rdev,
9248                              struct net_device *netdev, u32 cmd)
9249 {
9250         struct sk_buff *msg;
9251
9252         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9253         if (!msg)
9254                 return;
9255
9256         if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0, cmd) < 0) {
9257                 nlmsg_free(msg);
9258                 return;
9259         }
9260
9261         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9262                                 nl80211_scan_mcgrp.id, GFP_KERNEL);
9263 }
9264
9265 /*
9266  * This can happen on global regulatory changes or device specific settings
9267  * based on custom world regulatory domains.
9268  */
9269 void nl80211_send_reg_change_event(struct regulatory_request *request)
9270 {
9271         struct sk_buff *msg;
9272         void *hdr;
9273
9274         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9275         if (!msg)
9276                 return;
9277
9278         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_CHANGE);
9279         if (!hdr) {
9280                 nlmsg_free(msg);
9281                 return;
9282         }
9283
9284         /* Userspace can always count this one always being set */
9285         if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator))
9286                 goto nla_put_failure;
9287
9288         if (request->alpha2[0] == '0' && request->alpha2[1] == '0') {
9289                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
9290                                NL80211_REGDOM_TYPE_WORLD))
9291                         goto nla_put_failure;
9292         } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') {
9293                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
9294                                NL80211_REGDOM_TYPE_CUSTOM_WORLD))
9295                         goto nla_put_failure;
9296         } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
9297                    request->intersect) {
9298                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
9299                                NL80211_REGDOM_TYPE_INTERSECTION))
9300                         goto nla_put_failure;
9301         } else {
9302                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
9303                                NL80211_REGDOM_TYPE_COUNTRY) ||
9304                     nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
9305                                    request->alpha2))
9306                         goto nla_put_failure;
9307         }
9308
9309         if (request->wiphy_idx != WIPHY_IDX_INVALID &&
9310             nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx))
9311                 goto nla_put_failure;
9312
9313         genlmsg_end(msg, hdr);
9314
9315         rcu_read_lock();
9316         genlmsg_multicast_allns(msg, 0, nl80211_regulatory_mcgrp.id,
9317                                 GFP_ATOMIC);
9318         rcu_read_unlock();
9319
9320         return;
9321
9322 nla_put_failure:
9323         genlmsg_cancel(msg, hdr);
9324         nlmsg_free(msg);
9325 }
9326
9327 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
9328                                     struct net_device *netdev,
9329                                     const u8 *buf, size_t len,
9330                                     enum nl80211_commands cmd, gfp_t gfp)
9331 {
9332         struct sk_buff *msg;
9333         void *hdr;
9334
9335         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9336         if (!msg)
9337                 return;
9338
9339         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
9340         if (!hdr) {
9341                 nlmsg_free(msg);
9342                 return;
9343         }
9344
9345         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9346             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
9347             nla_put(msg, NL80211_ATTR_FRAME, len, buf))
9348                 goto nla_put_failure;
9349
9350         genlmsg_end(msg, hdr);
9351
9352         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9353                                 nl80211_mlme_mcgrp.id, gfp);
9354         return;
9355
9356  nla_put_failure:
9357         genlmsg_cancel(msg, hdr);
9358         nlmsg_free(msg);
9359 }
9360
9361 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
9362                           struct net_device *netdev, const u8 *buf,
9363                           size_t len, gfp_t gfp)
9364 {
9365         nl80211_send_mlme_event(rdev, netdev, buf, len,
9366                                 NL80211_CMD_AUTHENTICATE, gfp);
9367 }
9368
9369 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
9370                            struct net_device *netdev, const u8 *buf,
9371                            size_t len, gfp_t gfp)
9372 {
9373         nl80211_send_mlme_event(rdev, netdev, buf, len,
9374                                 NL80211_CMD_ASSOCIATE, gfp);
9375 }
9376
9377 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
9378                          struct net_device *netdev, const u8 *buf,
9379                          size_t len, gfp_t gfp)
9380 {
9381         nl80211_send_mlme_event(rdev, netdev, buf, len,
9382                                 NL80211_CMD_DEAUTHENTICATE, gfp);
9383 }
9384
9385 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
9386                            struct net_device *netdev, const u8 *buf,
9387                            size_t len, gfp_t gfp)
9388 {
9389         nl80211_send_mlme_event(rdev, netdev, buf, len,
9390                                 NL80211_CMD_DISASSOCIATE, gfp);
9391 }
9392
9393 void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf,
9394                                   size_t len)
9395 {
9396         struct wireless_dev *wdev = dev->ieee80211_ptr;
9397         struct wiphy *wiphy = wdev->wiphy;
9398         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
9399         const struct ieee80211_mgmt *mgmt = (void *)buf;
9400         u32 cmd;
9401
9402         if (WARN_ON(len < 2))
9403                 return;
9404
9405         if (ieee80211_is_deauth(mgmt->frame_control))
9406                 cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE;
9407         else
9408                 cmd = NL80211_CMD_UNPROT_DISASSOCIATE;
9409
9410         trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len);
9411         nl80211_send_mlme_event(rdev, dev, buf, len, cmd, GFP_ATOMIC);
9412 }
9413 EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt);
9414
9415 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
9416                                       struct net_device *netdev, int cmd,
9417                                       const u8 *addr, gfp_t gfp)
9418 {
9419         struct sk_buff *msg;
9420         void *hdr;
9421
9422         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9423         if (!msg)
9424                 return;
9425
9426         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
9427         if (!hdr) {
9428                 nlmsg_free(msg);
9429                 return;
9430         }
9431
9432         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9433             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
9434             nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
9435             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
9436                 goto nla_put_failure;
9437
9438         genlmsg_end(msg, hdr);
9439
9440         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9441                                 nl80211_mlme_mcgrp.id, gfp);
9442         return;
9443
9444  nla_put_failure:
9445         genlmsg_cancel(msg, hdr);
9446         nlmsg_free(msg);
9447 }
9448
9449 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
9450                                struct net_device *netdev, const u8 *addr,
9451                                gfp_t gfp)
9452 {
9453         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
9454                                   addr, gfp);
9455 }
9456
9457 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
9458                                 struct net_device *netdev, const u8 *addr,
9459                                 gfp_t gfp)
9460 {
9461         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
9462                                   addr, gfp);
9463 }
9464
9465 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
9466                                  struct net_device *netdev, const u8 *bssid,
9467                                  const u8 *req_ie, size_t req_ie_len,
9468                                  const u8 *resp_ie, size_t resp_ie_len,
9469                                  u16 status, gfp_t gfp)
9470 {
9471         struct sk_buff *msg;
9472         void *hdr;
9473
9474         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9475         if (!msg)
9476                 return;
9477
9478         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
9479         if (!hdr) {
9480                 nlmsg_free(msg);
9481                 return;
9482         }
9483
9484         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9485             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
9486             (bssid && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid)) ||
9487             nla_put_u16(msg, NL80211_ATTR_STATUS_CODE, status) ||
9488             (req_ie &&
9489              nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
9490             (resp_ie &&
9491              nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
9492                 goto nla_put_failure;
9493
9494         genlmsg_end(msg, hdr);
9495
9496         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9497                                 nl80211_mlme_mcgrp.id, gfp);
9498         return;
9499
9500  nla_put_failure:
9501         genlmsg_cancel(msg, hdr);
9502         nlmsg_free(msg);
9503
9504 }
9505
9506 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
9507                          struct net_device *netdev, const u8 *bssid,
9508                          const u8 *req_ie, size_t req_ie_len,
9509                          const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp)
9510 {
9511         struct sk_buff *msg;
9512         void *hdr;
9513
9514         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9515         if (!msg)
9516                 return;
9517
9518         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
9519         if (!hdr) {
9520                 nlmsg_free(msg);
9521                 return;
9522         }
9523
9524         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9525             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
9526             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid) ||
9527             (req_ie &&
9528              nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
9529             (resp_ie &&
9530              nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
9531                 goto nla_put_failure;
9532
9533         genlmsg_end(msg, hdr);
9534
9535         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9536                                 nl80211_mlme_mcgrp.id, gfp);
9537         return;
9538
9539  nla_put_failure:
9540         genlmsg_cancel(msg, hdr);
9541         nlmsg_free(msg);
9542
9543 }
9544
9545 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
9546                                struct net_device *netdev, u16 reason,
9547                                const u8 *ie, size_t ie_len, bool from_ap)
9548 {
9549         struct sk_buff *msg;
9550         void *hdr;
9551
9552         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9553         if (!msg)
9554                 return;
9555
9556         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
9557         if (!hdr) {
9558                 nlmsg_free(msg);
9559                 return;
9560         }
9561
9562         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9563             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
9564             (from_ap && reason &&
9565              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) ||
9566             (from_ap &&
9567              nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) ||
9568             (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie)))
9569                 goto nla_put_failure;
9570
9571         genlmsg_end(msg, hdr);
9572
9573         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9574                                 nl80211_mlme_mcgrp.id, GFP_KERNEL);
9575         return;
9576
9577  nla_put_failure:
9578         genlmsg_cancel(msg, hdr);
9579         nlmsg_free(msg);
9580
9581 }
9582
9583 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
9584                              struct net_device *netdev, const u8 *bssid,
9585                              gfp_t gfp)
9586 {
9587         struct sk_buff *msg;
9588         void *hdr;
9589
9590         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9591         if (!msg)
9592                 return;
9593
9594         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
9595         if (!hdr) {
9596                 nlmsg_free(msg);
9597                 return;
9598         }
9599
9600         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9601             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
9602             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
9603                 goto nla_put_failure;
9604
9605         genlmsg_end(msg, hdr);
9606
9607         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9608                                 nl80211_mlme_mcgrp.id, gfp);
9609         return;
9610
9611  nla_put_failure:
9612         genlmsg_cancel(msg, hdr);
9613         nlmsg_free(msg);
9614 }
9615
9616 void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr,
9617                                         const u8* ie, u8 ie_len, gfp_t gfp)
9618 {
9619         struct wireless_dev *wdev = dev->ieee80211_ptr;
9620         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
9621         struct sk_buff *msg;
9622         void *hdr;
9623
9624         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT))
9625                 return;
9626
9627         trace_cfg80211_notify_new_peer_candidate(dev, addr);
9628
9629         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9630         if (!msg)
9631                 return;
9632
9633         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
9634         if (!hdr) {
9635                 nlmsg_free(msg);
9636                 return;
9637         }
9638
9639         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9640             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
9641             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
9642             (ie_len && ie &&
9643              nla_put(msg, NL80211_ATTR_IE, ie_len , ie)))
9644                 goto nla_put_failure;
9645
9646         genlmsg_end(msg, hdr);
9647
9648         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9649                                 nl80211_mlme_mcgrp.id, gfp);
9650         return;
9651
9652  nla_put_failure:
9653         genlmsg_cancel(msg, hdr);
9654         nlmsg_free(msg);
9655 }
9656 EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate);
9657
9658 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
9659                                  struct net_device *netdev, const u8 *addr,
9660                                  enum nl80211_key_type key_type, int key_id,
9661                                  const u8 *tsc, gfp_t gfp)
9662 {
9663         struct sk_buff *msg;
9664         void *hdr;
9665
9666         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9667         if (!msg)
9668                 return;
9669
9670         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
9671         if (!hdr) {
9672                 nlmsg_free(msg);
9673                 return;
9674         }
9675
9676         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9677             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
9678             (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
9679             nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) ||
9680             (key_id != -1 &&
9681              nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) ||
9682             (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc)))
9683                 goto nla_put_failure;
9684
9685         genlmsg_end(msg, hdr);
9686
9687         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9688                                 nl80211_mlme_mcgrp.id, gfp);
9689         return;
9690
9691  nla_put_failure:
9692         genlmsg_cancel(msg, hdr);
9693         nlmsg_free(msg);
9694 }
9695
9696 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
9697                                     struct ieee80211_channel *channel_before,
9698                                     struct ieee80211_channel *channel_after)
9699 {
9700         struct sk_buff *msg;
9701         void *hdr;
9702         struct nlattr *nl_freq;
9703
9704         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
9705         if (!msg)
9706                 return;
9707
9708         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
9709         if (!hdr) {
9710                 nlmsg_free(msg);
9711                 return;
9712         }
9713
9714         /*
9715          * Since we are applying the beacon hint to a wiphy we know its
9716          * wiphy_idx is valid
9717          */
9718         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
9719                 goto nla_put_failure;
9720
9721         /* Before */
9722         nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE);
9723         if (!nl_freq)
9724                 goto nla_put_failure;
9725         if (nl80211_msg_put_channel(msg, channel_before, false))
9726                 goto nla_put_failure;
9727         nla_nest_end(msg, nl_freq);
9728
9729         /* After */
9730         nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER);
9731         if (!nl_freq)
9732                 goto nla_put_failure;
9733         if (nl80211_msg_put_channel(msg, channel_after, false))
9734                 goto nla_put_failure;
9735         nla_nest_end(msg, nl_freq);
9736
9737         genlmsg_end(msg, hdr);
9738
9739         rcu_read_lock();
9740         genlmsg_multicast_allns(msg, 0, nl80211_regulatory_mcgrp.id,
9741                                 GFP_ATOMIC);
9742         rcu_read_unlock();
9743
9744         return;
9745
9746 nla_put_failure:
9747         genlmsg_cancel(msg, hdr);
9748         nlmsg_free(msg);
9749 }
9750
9751 static void nl80211_send_remain_on_chan_event(
9752         int cmd, struct cfg80211_registered_device *rdev,
9753         struct wireless_dev *wdev, u64 cookie,
9754         struct ieee80211_channel *chan,
9755         unsigned int duration, gfp_t gfp)
9756 {
9757         struct sk_buff *msg;
9758         void *hdr;
9759
9760         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9761         if (!msg)
9762                 return;
9763
9764         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
9765         if (!hdr) {
9766                 nlmsg_free(msg);
9767                 return;
9768         }
9769
9770         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9771             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
9772                                          wdev->netdev->ifindex)) ||
9773             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
9774             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) ||
9775             nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
9776                         NL80211_CHAN_NO_HT) ||
9777             nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
9778                 goto nla_put_failure;
9779
9780         if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL &&
9781             nla_put_u32(msg, NL80211_ATTR_DURATION, duration))
9782                 goto nla_put_failure;
9783
9784         genlmsg_end(msg, hdr);
9785
9786         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9787                                 nl80211_mlme_mcgrp.id, gfp);
9788         return;
9789
9790  nla_put_failure:
9791         genlmsg_cancel(msg, hdr);
9792         nlmsg_free(msg);
9793 }
9794
9795 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie,
9796                                struct ieee80211_channel *chan,
9797                                unsigned int duration, gfp_t gfp)
9798 {
9799         struct wiphy *wiphy = wdev->wiphy;
9800         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
9801
9802         trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration);
9803         nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
9804                                           rdev, wdev, cookie, chan,
9805                                           duration, gfp);
9806 }
9807 EXPORT_SYMBOL(cfg80211_ready_on_channel);
9808
9809 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie,
9810                                         struct ieee80211_channel *chan,
9811                                         gfp_t gfp)
9812 {
9813         struct wiphy *wiphy = wdev->wiphy;
9814         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
9815
9816         trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan);
9817         nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
9818                                           rdev, wdev, cookie, chan, 0, gfp);
9819 }
9820 EXPORT_SYMBOL(cfg80211_remain_on_channel_expired);
9821
9822 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr,
9823                       struct station_info *sinfo, gfp_t gfp)
9824 {
9825         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
9826         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
9827         struct sk_buff *msg;
9828
9829         trace_cfg80211_new_sta(dev, mac_addr, sinfo);
9830
9831         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9832         if (!msg)
9833                 return;
9834
9835         if (nl80211_send_station(msg, 0, 0, 0,
9836                                  rdev, dev, mac_addr, sinfo) < 0) {
9837                 nlmsg_free(msg);
9838                 return;
9839         }
9840
9841         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9842                                 nl80211_mlme_mcgrp.id, gfp);
9843 }
9844 EXPORT_SYMBOL(cfg80211_new_sta);
9845
9846 void cfg80211_del_sta(struct net_device *dev, const u8 *mac_addr, gfp_t gfp)
9847 {
9848         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
9849         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
9850         struct sk_buff *msg;
9851         void *hdr;
9852
9853         trace_cfg80211_del_sta(dev, mac_addr);
9854
9855         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9856         if (!msg)
9857                 return;
9858
9859         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_STATION);
9860         if (!hdr) {
9861                 nlmsg_free(msg);
9862                 return;
9863         }
9864
9865         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
9866             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
9867                 goto nla_put_failure;
9868
9869         genlmsg_end(msg, hdr);
9870
9871         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9872                                 nl80211_mlme_mcgrp.id, gfp);
9873         return;
9874
9875  nla_put_failure:
9876         genlmsg_cancel(msg, hdr);
9877         nlmsg_free(msg);
9878 }
9879 EXPORT_SYMBOL(cfg80211_del_sta);
9880
9881 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr,
9882                           enum nl80211_connect_failed_reason reason,
9883                           gfp_t gfp)
9884 {
9885         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
9886         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
9887         struct sk_buff *msg;
9888         void *hdr;
9889
9890         msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
9891         if (!msg)
9892                 return;
9893
9894         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED);
9895         if (!hdr) {
9896                 nlmsg_free(msg);
9897                 return;
9898         }
9899
9900         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
9901             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
9902             nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason))
9903                 goto nla_put_failure;
9904
9905         genlmsg_end(msg, hdr);
9906
9907         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9908                                 nl80211_mlme_mcgrp.id, gfp);
9909         return;
9910
9911  nla_put_failure:
9912         genlmsg_cancel(msg, hdr);
9913         nlmsg_free(msg);
9914 }
9915 EXPORT_SYMBOL(cfg80211_conn_failed);
9916
9917 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
9918                                        const u8 *addr, gfp_t gfp)
9919 {
9920         struct wireless_dev *wdev = dev->ieee80211_ptr;
9921         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
9922         struct sk_buff *msg;
9923         void *hdr;
9924         u32 nlportid = ACCESS_ONCE(wdev->ap_unexpected_nlportid);
9925
9926         if (!nlportid)
9927                 return false;
9928
9929         msg = nlmsg_new(100, gfp);
9930         if (!msg)
9931                 return true;
9932
9933         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
9934         if (!hdr) {
9935                 nlmsg_free(msg);
9936                 return true;
9937         }
9938
9939         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9940             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
9941             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
9942                 goto nla_put_failure;
9943
9944         genlmsg_end(msg, hdr);
9945         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
9946         return true;
9947
9948  nla_put_failure:
9949         genlmsg_cancel(msg, hdr);
9950         nlmsg_free(msg);
9951         return true;
9952 }
9953
9954 bool cfg80211_rx_spurious_frame(struct net_device *dev,
9955                                 const u8 *addr, gfp_t gfp)
9956 {
9957         struct wireless_dev *wdev = dev->ieee80211_ptr;
9958         bool ret;
9959
9960         trace_cfg80211_rx_spurious_frame(dev, addr);
9961
9962         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
9963                     wdev->iftype != NL80211_IFTYPE_P2P_GO)) {
9964                 trace_cfg80211_return_bool(false);
9965                 return false;
9966         }
9967         ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
9968                                          addr, gfp);
9969         trace_cfg80211_return_bool(ret);
9970         return ret;
9971 }
9972 EXPORT_SYMBOL(cfg80211_rx_spurious_frame);
9973
9974 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev,
9975                                         const u8 *addr, gfp_t gfp)
9976 {
9977         struct wireless_dev *wdev = dev->ieee80211_ptr;
9978         bool ret;
9979
9980         trace_cfg80211_rx_unexpected_4addr_frame(dev, addr);
9981
9982         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
9983                     wdev->iftype != NL80211_IFTYPE_P2P_GO &&
9984                     wdev->iftype != NL80211_IFTYPE_AP_VLAN)) {
9985                 trace_cfg80211_return_bool(false);
9986                 return false;
9987         }
9988         ret = __nl80211_unexpected_frame(dev,
9989                                          NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
9990                                          addr, gfp);
9991         trace_cfg80211_return_bool(ret);
9992         return ret;
9993 }
9994 EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame);
9995
9996 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
9997                       struct wireless_dev *wdev, u32 nlportid,
9998                       int freq, int sig_dbm,
9999                       const u8 *buf, size_t len, gfp_t gfp)
10000 {
10001         struct net_device *netdev = wdev->netdev;
10002         struct sk_buff *msg;
10003         void *hdr;
10004
10005         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10006         if (!msg)
10007                 return -ENOMEM;
10008
10009         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
10010         if (!hdr) {
10011                 nlmsg_free(msg);
10012                 return -ENOMEM;
10013         }
10014
10015         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10016             (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
10017                                         netdev->ifindex)) ||
10018             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
10019             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) ||
10020             (sig_dbm &&
10021              nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
10022             nla_put(msg, NL80211_ATTR_FRAME, len, buf))
10023                 goto nla_put_failure;
10024
10025         genlmsg_end(msg, hdr);
10026
10027         return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
10028
10029  nla_put_failure:
10030         genlmsg_cancel(msg, hdr);
10031         nlmsg_free(msg);
10032         return -ENOBUFS;
10033 }
10034
10035 void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie,
10036                              const u8 *buf, size_t len, bool ack, gfp_t gfp)
10037 {
10038         struct wiphy *wiphy = wdev->wiphy;
10039         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10040         struct net_device *netdev = wdev->netdev;
10041         struct sk_buff *msg;
10042         void *hdr;
10043
10044         trace_cfg80211_mgmt_tx_status(wdev, cookie, ack);
10045
10046         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10047         if (!msg)
10048                 return;
10049
10050         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS);
10051         if (!hdr) {
10052                 nlmsg_free(msg);
10053                 return;
10054         }
10055
10056         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10057             (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
10058                                    netdev->ifindex)) ||
10059             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
10060             nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
10061             nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) ||
10062             (ack && nla_put_flag(msg, NL80211_ATTR_ACK)))
10063                 goto nla_put_failure;
10064
10065         genlmsg_end(msg, hdr);
10066
10067         genlmsg_multicast(msg, 0, nl80211_mlme_mcgrp.id, gfp);
10068         return;
10069
10070  nla_put_failure:
10071         genlmsg_cancel(msg, hdr);
10072         nlmsg_free(msg);
10073 }
10074 EXPORT_SYMBOL(cfg80211_mgmt_tx_status);
10075
10076 void cfg80211_cqm_rssi_notify(struct net_device *dev,
10077                               enum nl80211_cqm_rssi_threshold_event rssi_event,
10078                               gfp_t gfp)
10079 {
10080         struct wireless_dev *wdev = dev->ieee80211_ptr;
10081         struct wiphy *wiphy = wdev->wiphy;
10082         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10083         struct sk_buff *msg;
10084         struct nlattr *pinfoattr;
10085         void *hdr;
10086
10087         trace_cfg80211_cqm_rssi_notify(dev, rssi_event);
10088
10089         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10090         if (!msg)
10091                 return;
10092
10093         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
10094         if (!hdr) {
10095                 nlmsg_free(msg);
10096                 return;
10097         }
10098
10099         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10100             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
10101                 goto nla_put_failure;
10102
10103         pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
10104         if (!pinfoattr)
10105                 goto nla_put_failure;
10106
10107         if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
10108                         rssi_event))
10109                 goto nla_put_failure;
10110
10111         nla_nest_end(msg, pinfoattr);
10112
10113         genlmsg_end(msg, hdr);
10114
10115         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10116                                 nl80211_mlme_mcgrp.id, gfp);
10117         return;
10118
10119  nla_put_failure:
10120         genlmsg_cancel(msg, hdr);
10121         nlmsg_free(msg);
10122 }
10123 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify);
10124
10125 static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
10126                                      struct net_device *netdev, const u8 *bssid,
10127                                      const u8 *replay_ctr, gfp_t gfp)
10128 {
10129         struct sk_buff *msg;
10130         struct nlattr *rekey_attr;
10131         void *hdr;
10132
10133         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10134         if (!msg)
10135                 return;
10136
10137         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
10138         if (!hdr) {
10139                 nlmsg_free(msg);
10140                 return;
10141         }
10142
10143         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10144             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10145             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
10146                 goto nla_put_failure;
10147
10148         rekey_attr = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA);
10149         if (!rekey_attr)
10150                 goto nla_put_failure;
10151
10152         if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR,
10153                     NL80211_REPLAY_CTR_LEN, replay_ctr))
10154                 goto nla_put_failure;
10155
10156         nla_nest_end(msg, rekey_attr);
10157
10158         genlmsg_end(msg, hdr);
10159
10160         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10161                                 nl80211_mlme_mcgrp.id, gfp);
10162         return;
10163
10164  nla_put_failure:
10165         genlmsg_cancel(msg, hdr);
10166         nlmsg_free(msg);
10167 }
10168
10169 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid,
10170                                const u8 *replay_ctr, gfp_t gfp)
10171 {
10172         struct wireless_dev *wdev = dev->ieee80211_ptr;
10173         struct wiphy *wiphy = wdev->wiphy;
10174         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10175
10176         trace_cfg80211_gtk_rekey_notify(dev, bssid);
10177         nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp);
10178 }
10179 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify);
10180
10181 static void
10182 nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
10183                                struct net_device *netdev, int index,
10184                                const u8 *bssid, bool preauth, gfp_t gfp)
10185 {
10186         struct sk_buff *msg;
10187         struct nlattr *attr;
10188         void *hdr;
10189
10190         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10191         if (!msg)
10192                 return;
10193
10194         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
10195         if (!hdr) {
10196                 nlmsg_free(msg);
10197                 return;
10198         }
10199
10200         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10201             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
10202                 goto nla_put_failure;
10203
10204         attr = nla_nest_start(msg, NL80211_ATTR_PMKSA_CANDIDATE);
10205         if (!attr)
10206                 goto nla_put_failure;
10207
10208         if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) ||
10209             nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) ||
10210             (preauth &&
10211              nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH)))
10212                 goto nla_put_failure;
10213
10214         nla_nest_end(msg, attr);
10215
10216         genlmsg_end(msg, hdr);
10217
10218         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10219                                 nl80211_mlme_mcgrp.id, gfp);
10220         return;
10221
10222  nla_put_failure:
10223         genlmsg_cancel(msg, hdr);
10224         nlmsg_free(msg);
10225 }
10226
10227 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index,
10228                                      const u8 *bssid, bool preauth, gfp_t gfp)
10229 {
10230         struct wireless_dev *wdev = dev->ieee80211_ptr;
10231         struct wiphy *wiphy = wdev->wiphy;
10232         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10233
10234         trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth);
10235         nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp);
10236 }
10237 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify);
10238
10239 static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev,
10240                                      struct net_device *netdev,
10241                                      struct cfg80211_chan_def *chandef,
10242                                      gfp_t gfp)
10243 {
10244         struct sk_buff *msg;
10245         void *hdr;
10246
10247         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10248         if (!msg)
10249                 return;
10250
10251         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CH_SWITCH_NOTIFY);
10252         if (!hdr) {
10253                 nlmsg_free(msg);
10254                 return;
10255         }
10256
10257         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
10258                 goto nla_put_failure;
10259
10260         if (nl80211_send_chandef(msg, chandef))
10261                 goto nla_put_failure;
10262
10263         genlmsg_end(msg, hdr);
10264
10265         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10266                                 nl80211_mlme_mcgrp.id, gfp);
10267         return;
10268
10269  nla_put_failure:
10270         genlmsg_cancel(msg, hdr);
10271         nlmsg_free(msg);
10272 }
10273
10274 void cfg80211_ch_switch_notify(struct net_device *dev,
10275                                struct cfg80211_chan_def *chandef)
10276 {
10277         struct wireless_dev *wdev = dev->ieee80211_ptr;
10278         struct wiphy *wiphy = wdev->wiphy;
10279         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10280
10281         trace_cfg80211_ch_switch_notify(dev, chandef);
10282
10283         wdev_lock(wdev);
10284
10285         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
10286                     wdev->iftype != NL80211_IFTYPE_P2P_GO))
10287                 goto out;
10288
10289         wdev->channel = chandef->chan;
10290         nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL);
10291 out:
10292         wdev_unlock(wdev);
10293         return;
10294 }
10295 EXPORT_SYMBOL(cfg80211_ch_switch_notify);
10296
10297 void cfg80211_cqm_txe_notify(struct net_device *dev,
10298                              const u8 *peer, u32 num_packets,
10299                              u32 rate, u32 intvl, gfp_t gfp)
10300 {
10301         struct wireless_dev *wdev = dev->ieee80211_ptr;
10302         struct wiphy *wiphy = wdev->wiphy;
10303         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10304         struct sk_buff *msg;
10305         struct nlattr *pinfoattr;
10306         void *hdr;
10307
10308         msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
10309         if (!msg)
10310                 return;
10311
10312         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
10313         if (!hdr) {
10314                 nlmsg_free(msg);
10315                 return;
10316         }
10317
10318         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10319             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
10320             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer))
10321                 goto nla_put_failure;
10322
10323         pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
10324         if (!pinfoattr)
10325                 goto nla_put_failure;
10326
10327         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets))
10328                 goto nla_put_failure;
10329
10330         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate))
10331                 goto nla_put_failure;
10332
10333         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl))
10334                 goto nla_put_failure;
10335
10336         nla_nest_end(msg, pinfoattr);
10337
10338         genlmsg_end(msg, hdr);
10339
10340         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10341                                 nl80211_mlme_mcgrp.id, gfp);
10342         return;
10343
10344  nla_put_failure:
10345         genlmsg_cancel(msg, hdr);
10346         nlmsg_free(msg);
10347 }
10348 EXPORT_SYMBOL(cfg80211_cqm_txe_notify);
10349
10350 void
10351 nl80211_radar_notify(struct cfg80211_registered_device *rdev,
10352                      struct cfg80211_chan_def *chandef,
10353                      enum nl80211_radar_event event,
10354                      struct net_device *netdev, gfp_t gfp)
10355 {
10356         struct sk_buff *msg;
10357         void *hdr;
10358
10359         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10360         if (!msg)
10361                 return;
10362
10363         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT);
10364         if (!hdr) {
10365                 nlmsg_free(msg);
10366                 return;
10367         }
10368
10369         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
10370                 goto nla_put_failure;
10371
10372         /* NOP and radar events don't need a netdev parameter */
10373         if (netdev) {
10374                 struct wireless_dev *wdev = netdev->ieee80211_ptr;
10375
10376                 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10377                     nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
10378                         goto nla_put_failure;
10379         }
10380
10381         if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event))
10382                 goto nla_put_failure;
10383
10384         if (nl80211_send_chandef(msg, chandef))
10385                 goto nla_put_failure;
10386
10387         genlmsg_end(msg, hdr);
10388
10389         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10390                                 nl80211_mlme_mcgrp.id, gfp);
10391         return;
10392
10393  nla_put_failure:
10394         genlmsg_cancel(msg, hdr);
10395         nlmsg_free(msg);
10396 }
10397
10398 void cfg80211_cqm_pktloss_notify(struct net_device *dev,
10399                                  const u8 *peer, u32 num_packets, gfp_t gfp)
10400 {
10401         struct wireless_dev *wdev = dev->ieee80211_ptr;
10402         struct wiphy *wiphy = wdev->wiphy;
10403         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10404         struct sk_buff *msg;
10405         struct nlattr *pinfoattr;
10406         void *hdr;
10407
10408         trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets);
10409
10410         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10411         if (!msg)
10412                 return;
10413
10414         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
10415         if (!hdr) {
10416                 nlmsg_free(msg);
10417                 return;
10418         }
10419
10420         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10421             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
10422             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer))
10423                 goto nla_put_failure;
10424
10425         pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
10426         if (!pinfoattr)
10427                 goto nla_put_failure;
10428
10429         if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets))
10430                 goto nla_put_failure;
10431
10432         nla_nest_end(msg, pinfoattr);
10433
10434         genlmsg_end(msg, hdr);
10435
10436         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10437                                 nl80211_mlme_mcgrp.id, gfp);
10438         return;
10439
10440  nla_put_failure:
10441         genlmsg_cancel(msg, hdr);
10442         nlmsg_free(msg);
10443 }
10444 EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify);
10445
10446 void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
10447                            u64 cookie, bool acked, gfp_t gfp)
10448 {
10449         struct wireless_dev *wdev = dev->ieee80211_ptr;
10450         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
10451         struct sk_buff *msg;
10452         void *hdr;
10453
10454         trace_cfg80211_probe_status(dev, addr, cookie, acked);
10455
10456         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10457
10458         if (!msg)
10459                 return;
10460
10461         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT);
10462         if (!hdr) {
10463                 nlmsg_free(msg);
10464                 return;
10465         }
10466
10467         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10468             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
10469             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
10470             nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) ||
10471             (acked && nla_put_flag(msg, NL80211_ATTR_ACK)))
10472                 goto nla_put_failure;
10473
10474         genlmsg_end(msg, hdr);
10475
10476         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10477                                 nl80211_mlme_mcgrp.id, gfp);
10478         return;
10479
10480  nla_put_failure:
10481         genlmsg_cancel(msg, hdr);
10482         nlmsg_free(msg);
10483 }
10484 EXPORT_SYMBOL(cfg80211_probe_status);
10485
10486 void cfg80211_report_obss_beacon(struct wiphy *wiphy,
10487                                  const u8 *frame, size_t len,
10488                                  int freq, int sig_dbm)
10489 {
10490         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10491         struct sk_buff *msg;
10492         void *hdr;
10493         struct cfg80211_beacon_registration *reg;
10494
10495         trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm);
10496
10497         spin_lock_bh(&rdev->beacon_registrations_lock);
10498         list_for_each_entry(reg, &rdev->beacon_registrations, list) {
10499                 msg = nlmsg_new(len + 100, GFP_ATOMIC);
10500                 if (!msg) {
10501                         spin_unlock_bh(&rdev->beacon_registrations_lock);
10502                         return;
10503                 }
10504
10505                 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
10506                 if (!hdr)
10507                         goto nla_put_failure;
10508
10509                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10510                     (freq &&
10511                      nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq)) ||
10512                     (sig_dbm &&
10513                      nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
10514                     nla_put(msg, NL80211_ATTR_FRAME, len, frame))
10515                         goto nla_put_failure;
10516
10517                 genlmsg_end(msg, hdr);
10518
10519                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid);
10520         }
10521         spin_unlock_bh(&rdev->beacon_registrations_lock);
10522         return;
10523
10524  nla_put_failure:
10525         spin_unlock_bh(&rdev->beacon_registrations_lock);
10526         if (hdr)
10527                 genlmsg_cancel(msg, hdr);
10528         nlmsg_free(msg);
10529 }
10530 EXPORT_SYMBOL(cfg80211_report_obss_beacon);
10531
10532 #ifdef CONFIG_PM
10533 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev,
10534                                    struct cfg80211_wowlan_wakeup *wakeup,
10535                                    gfp_t gfp)
10536 {
10537         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
10538         struct sk_buff *msg;
10539         void *hdr;
10540         int size = 200;
10541
10542         trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup);
10543
10544         if (wakeup)
10545                 size += wakeup->packet_present_len;
10546
10547         msg = nlmsg_new(size, gfp);
10548         if (!msg)
10549                 return;
10550
10551         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN);
10552         if (!hdr)
10553                 goto free_msg;
10554
10555         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10556             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
10557                 goto free_msg;
10558
10559         if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
10560                                         wdev->netdev->ifindex))
10561                 goto free_msg;
10562
10563         if (wakeup) {
10564                 struct nlattr *reasons;
10565
10566                 reasons = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
10567
10568                 if (wakeup->disconnect &&
10569                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT))
10570                         goto free_msg;
10571                 if (wakeup->magic_pkt &&
10572                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT))
10573                         goto free_msg;
10574                 if (wakeup->gtk_rekey_failure &&
10575                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE))
10576                         goto free_msg;
10577                 if (wakeup->eap_identity_req &&
10578                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST))
10579                         goto free_msg;
10580                 if (wakeup->four_way_handshake &&
10581                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE))
10582                         goto free_msg;
10583                 if (wakeup->rfkill_release &&
10584                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))
10585                         goto free_msg;
10586
10587                 if (wakeup->pattern_idx >= 0 &&
10588                     nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
10589                                 wakeup->pattern_idx))
10590                         goto free_msg;
10591
10592                 if (wakeup->tcp_match)
10593                         nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH);
10594
10595                 if (wakeup->tcp_connlost)
10596                         nla_put_flag(msg,
10597                                      NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST);
10598
10599                 if (wakeup->tcp_nomoretokens)
10600                         nla_put_flag(msg,
10601                                 NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS);
10602
10603                 if (wakeup->packet) {
10604                         u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211;
10605                         u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN;
10606
10607                         if (!wakeup->packet_80211) {
10608                                 pkt_attr =
10609                                         NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023;
10610                                 len_attr =
10611                                         NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN;
10612                         }
10613
10614                         if (wakeup->packet_len &&
10615                             nla_put_u32(msg, len_attr, wakeup->packet_len))
10616                                 goto free_msg;
10617
10618                         if (nla_put(msg, pkt_attr, wakeup->packet_present_len,
10619                                     wakeup->packet))
10620                                 goto free_msg;
10621                 }
10622
10623                 nla_nest_end(msg, reasons);
10624         }
10625
10626         genlmsg_end(msg, hdr);
10627
10628         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10629                                 nl80211_mlme_mcgrp.id, gfp);
10630         return;
10631
10632  free_msg:
10633         nlmsg_free(msg);
10634 }
10635 EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup);
10636 #endif
10637
10638 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer,
10639                                 enum nl80211_tdls_operation oper,
10640                                 u16 reason_code, gfp_t gfp)
10641 {
10642         struct wireless_dev *wdev = dev->ieee80211_ptr;
10643         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
10644         struct sk_buff *msg;
10645         void *hdr;
10646
10647         trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper,
10648                                          reason_code);
10649
10650         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10651         if (!msg)
10652                 return;
10653
10654         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER);
10655         if (!hdr) {
10656                 nlmsg_free(msg);
10657                 return;
10658         }
10659
10660         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10661             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
10662             nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) ||
10663             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) ||
10664             (reason_code > 0 &&
10665              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code)))
10666                 goto nla_put_failure;
10667
10668         genlmsg_end(msg, hdr);
10669
10670         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10671                                 nl80211_mlme_mcgrp.id, gfp);
10672         return;
10673
10674  nla_put_failure:
10675         genlmsg_cancel(msg, hdr);
10676         nlmsg_free(msg);
10677 }
10678 EXPORT_SYMBOL(cfg80211_tdls_oper_request);
10679
10680 static int nl80211_netlink_notify(struct notifier_block * nb,
10681                                   unsigned long state,
10682                                   void *_notify)
10683 {
10684         struct netlink_notify *notify = _notify;
10685         struct cfg80211_registered_device *rdev;
10686         struct wireless_dev *wdev;
10687         struct cfg80211_beacon_registration *reg, *tmp;
10688
10689         if (state != NETLINK_URELEASE)
10690                 return NOTIFY_DONE;
10691
10692         rcu_read_lock();
10693
10694         list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
10695                 list_for_each_entry_rcu(wdev, &rdev->wdev_list, list)
10696                         cfg80211_mlme_unregister_socket(wdev, notify->portid);
10697
10698                 spin_lock_bh(&rdev->beacon_registrations_lock);
10699                 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations,
10700                                          list) {
10701                         if (reg->nlportid == notify->portid) {
10702                                 list_del(&reg->list);
10703                                 kfree(reg);
10704                                 break;
10705                         }
10706                 }
10707                 spin_unlock_bh(&rdev->beacon_registrations_lock);
10708         }
10709
10710         rcu_read_unlock();
10711
10712         return NOTIFY_DONE;
10713 }
10714
10715 static struct notifier_block nl80211_netlink_notifier = {
10716         .notifier_call = nl80211_netlink_notify,
10717 };
10718
10719 void cfg80211_ft_event(struct net_device *netdev,
10720                        struct cfg80211_ft_event_params *ft_event)
10721 {
10722         struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
10723         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10724         struct sk_buff *msg;
10725         void *hdr;
10726
10727         trace_cfg80211_ft_event(wiphy, netdev, ft_event);
10728
10729         if (!ft_event->target_ap)
10730                 return;
10731
10732         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10733         if (!msg)
10734                 return;
10735
10736         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT);
10737         if (!hdr) {
10738                 nlmsg_free(msg);
10739                 return;
10740         }
10741
10742         nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
10743         nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
10744         nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap);
10745         if (ft_event->ies)
10746                 nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies);
10747         if (ft_event->ric_ies)
10748                 nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len,
10749                         ft_event->ric_ies);
10750
10751         genlmsg_end(msg, hdr);
10752
10753         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10754                                 nl80211_mlme_mcgrp.id, GFP_KERNEL);
10755 }
10756 EXPORT_SYMBOL(cfg80211_ft_event);
10757
10758 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp)
10759 {
10760         struct cfg80211_registered_device *rdev;
10761         struct sk_buff *msg;
10762         void *hdr;
10763         u32 nlportid;
10764
10765         rdev = wiphy_to_dev(wdev->wiphy);
10766         if (!rdev->crit_proto_nlportid)
10767                 return;
10768
10769         nlportid = rdev->crit_proto_nlportid;
10770         rdev->crit_proto_nlportid = 0;
10771
10772         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10773         if (!msg)
10774                 return;
10775
10776         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP);
10777         if (!hdr)
10778                 goto nla_put_failure;
10779
10780         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10781             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
10782                 goto nla_put_failure;
10783
10784         genlmsg_end(msg, hdr);
10785
10786         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
10787         return;
10788
10789  nla_put_failure:
10790         if (hdr)
10791                 genlmsg_cancel(msg, hdr);
10792         nlmsg_free(msg);
10793
10794 }
10795 EXPORT_SYMBOL(cfg80211_crit_proto_stopped);
10796
10797 /* initialisation/exit functions */
10798
10799 int nl80211_init(void)
10800 {
10801         int err;
10802
10803         err = genl_register_family_with_ops(&nl80211_fam,
10804                 nl80211_ops, ARRAY_SIZE(nl80211_ops));
10805         if (err)
10806                 return err;
10807
10808         err = genl_register_mc_group(&nl80211_fam, &nl80211_config_mcgrp);
10809         if (err)
10810                 goto err_out;
10811
10812         err = genl_register_mc_group(&nl80211_fam, &nl80211_scan_mcgrp);
10813         if (err)
10814                 goto err_out;
10815
10816         err = genl_register_mc_group(&nl80211_fam, &nl80211_regulatory_mcgrp);
10817         if (err)
10818                 goto err_out;
10819
10820         err = genl_register_mc_group(&nl80211_fam, &nl80211_mlme_mcgrp);
10821         if (err)
10822                 goto err_out;
10823
10824 #ifdef CONFIG_NL80211_TESTMODE
10825         err = genl_register_mc_group(&nl80211_fam, &nl80211_testmode_mcgrp);
10826         if (err)
10827                 goto err_out;
10828 #endif
10829
10830         err = netlink_register_notifier(&nl80211_netlink_notifier);
10831         if (err)
10832                 goto err_out;
10833
10834         return 0;
10835  err_out:
10836         genl_unregister_family(&nl80211_fam);
10837         return err;
10838 }
10839
10840 void nl80211_exit(void)
10841 {
10842         netlink_unregister_notifier(&nl80211_netlink_notifier);
10843         genl_unregister_family(&nl80211_fam);
10844 }