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         [NL80211_ATTR_CH_SWITCH_COUNT] = { .type = NLA_U32 },
 353         [NL80211_ATTR_CH_SWITCH_BLOCK_TX] = { .type = NLA_FLAG },
 354         [NL80211_ATTR_CSA_IES] = { .type = NLA_NESTED },
 355         [NL80211_ATTR_CSA_C_OFF_BEACON] = { .type = NLA_U16 },
 356         [NL80211_ATTR_CSA_C_OFF_PRESP] = { .type = NLA_U16 },
 357 };
 358
 359 /* policy for the key attributes */
 360 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = {
 361         [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN },
 362         [NL80211_KEY_IDX] = { .type = NLA_U8 },
 363         [NL80211_KEY_CIPHER] = { .type = NLA_U32 },
 364         [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
 365         [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG },
 366         [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG },
 367         [NL80211_KEY_TYPE] = { .type = NLA_U32 },
 368         [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
 369 };
 370
 371 /* policy for the key default flags */
 372 static const struct nla_policy
 373 nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = {
 374         [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG },
 375         [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG },
 376 };
 377
 378 /* policy for WoWLAN attributes */
 379 static const struct nla_policy
 380 nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = {
 381         [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG },
 382         [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG },
 383         [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG },
 384         [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED },
 385         [NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG },
 386         [NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG },
 387         [NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG },
 388         [NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG },
 389         [NL80211_WOWLAN_TRIG_TCP_CONNECTION] = { .type = NLA_NESTED },
 390 };
 391
 392 static const struct nla_policy
 393 nl80211_wowlan_tcp_policy[NUM_NL80211_WOWLAN_TCP] = {
 394         [NL80211_WOWLAN_TCP_SRC_IPV4] = { .type = NLA_U32 },
 395         [NL80211_WOWLAN_TCP_DST_IPV4] = { .type = NLA_U32 },
 396         [NL80211_WOWLAN_TCP_DST_MAC] = { .len = ETH_ALEN },
 397         [NL80211_WOWLAN_TCP_SRC_PORT] = { .type = NLA_U16 },
 398         [NL80211_WOWLAN_TCP_DST_PORT] = { .type = NLA_U16 },
 399         [NL80211_WOWLAN_TCP_DATA_PAYLOAD] = { .len = 1 },
 400         [NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ] = {
 401                 .len = sizeof(struct nl80211_wowlan_tcp_data_seq)
 402         },
 403         [NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN] = {
 404                 .len = sizeof(struct nl80211_wowlan_tcp_data_token)
 405         },
 406         [NL80211_WOWLAN_TCP_DATA_INTERVAL] = { .type = NLA_U32 },
 407         [NL80211_WOWLAN_TCP_WAKE_PAYLOAD] = { .len = 1 },
 408         [NL80211_WOWLAN_TCP_WAKE_MASK] = { .len = 1 },
 409 };
 410
 411 /* policy for coalesce rule attributes */
 412 static const struct nla_policy
 413 nl80211_coalesce_policy[NUM_NL80211_ATTR_COALESCE_RULE] = {
 414         [NL80211_ATTR_COALESCE_RULE_DELAY] = { .type = NLA_U32 },
 415         [NL80211_ATTR_COALESCE_RULE_CONDITION] = { .type = NLA_U32 },
 416         [NL80211_ATTR_COALESCE_RULE_PKT_PATTERN] = { .type = NLA_NESTED },
 417 };
 418
 419 /* policy for GTK rekey offload attributes */
 420 static const struct nla_policy
 421 nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = {
 422         [NL80211_REKEY_DATA_KEK] = { .len = NL80211_KEK_LEN },
 423         [NL80211_REKEY_DATA_KCK] = { .len = NL80211_KCK_LEN },
 424         [NL80211_REKEY_DATA_REPLAY_CTR] = { .len = NL80211_REPLAY_CTR_LEN },
 425 };
 426
 427 static const struct nla_policy
 428 nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = {
 429         [NL80211_SCHED_SCAN_MATCH_ATTR_SSID] = { .type = NLA_BINARY,
 430                                                  .len = IEEE80211_MAX_SSID_LEN },
 431         [NL80211_SCHED_SCAN_MATCH_ATTR_RSSI] = { .type = NLA_U32 },
 432 };
 433
 434 static int nl80211_prepare_wdev_dump(struct sk_buff *skb,
 435                                      struct netlink_callback *cb,
 436                                      struct cfg80211_registered_device **rdev,
 437                                      struct wireless_dev **wdev)
 438 {
 439         int err;
 440
 441         rtnl_lock();
 442
 443         if (!cb->args[0]) {
 444                 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
 445                                   nl80211_fam.attrbuf, nl80211_fam.maxattr,
 446                                   nl80211_policy);
 447                 if (err)
 448                         goto out_unlock;
 449
 450                 *wdev = __cfg80211_wdev_from_attrs(sock_net(skb->sk),
 451                                                    nl80211_fam.attrbuf);
 452                 if (IS_ERR(*wdev)) {
 453                         err = PTR_ERR(*wdev);
 454                         goto out_unlock;
 455                 }
 456                 *rdev = wiphy_to_dev((*wdev)->wiphy);
 457                 cb->args[0] = (*rdev)->wiphy_idx;
 458                 cb->args[1] = (*wdev)->identifier;
 459         } else {
 460                 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0]);
 461                 struct wireless_dev *tmp;
 462
 463                 if (!wiphy) {
 464                         err = -ENODEV;
 465                         goto out_unlock;
 466                 }
 467                 *rdev = wiphy_to_dev(wiphy);
 468                 *wdev = NULL;
 469
 470                 list_for_each_entry(tmp, &(*rdev)->wdev_list, list) {
 471                         if (tmp->identifier == cb->args[1]) {
 472                                 *wdev = tmp;
 473                                 break;
 474                         }
 475                 }
 476
 477                 if (!*wdev) {
 478                         err = -ENODEV;
 479                         goto out_unlock;
 480                 }
 481         }
 482
 483         return 0;
 484  out_unlock:
 485         rtnl_unlock();
 486         return err;
 487 }
 488
 489 static void nl80211_finish_wdev_dump(struct cfg80211_registered_device *rdev)
 490 {
 491         rtnl_unlock();
 492 }
 493
 494 /* IE validation */
 495 static bool is_valid_ie_attr(const struct nlattr *attr)
 496 {
 497         const u8 *pos;
 498         int len;
 499
 500         if (!attr)
 501                 return true;
 502
 503         pos = nla_data(attr);
 504         len = nla_len(attr);
 505
 506         while (len) {
 507                 u8 elemlen;
 508
 509                 if (len < 2)
 510                         return false;
 511                 len -= 2;
 512
 513                 elemlen = pos[1];
 514                 if (elemlen > len)
 515                         return false;
 516
 517                 len -= elemlen;
 518                 pos += 2 + elemlen;
 519         }
 520
 521         return true;
 522 }
 523
 524 /* message building helper */
 525 static inline void *nl80211hdr_put(struct sk_buff *skb, u32 portid, u32 seq,
 526                                    int flags, u8 cmd)
 527 {
 528         /* since there is no private header just add the generic one */
 529         return genlmsg_put(skb, portid, seq, &nl80211_fam, flags, cmd);
 530 }
 531
 532 static int nl80211_msg_put_channel(struct sk_buff *msg,
 533                                    struct ieee80211_channel *chan,
 534                                    bool large)
 535 {
 536         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ,
 537                         chan->center_freq))
 538                 goto nla_put_failure;
 539
 540         if ((chan->flags & IEEE80211_CHAN_DISABLED) &&
 541             nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED))
 542                 goto nla_put_failure;
 543         if ((chan->flags & IEEE80211_CHAN_PASSIVE_SCAN) &&
 544             nla_put_flag(msg, NL80211_FREQUENCY_ATTR_PASSIVE_SCAN))
 545                 goto nla_put_failure;
 546         if ((chan->flags & IEEE80211_CHAN_NO_IBSS) &&
 547             nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IBSS))
 548                 goto nla_put_failure;
 549         if (chan->flags & IEEE80211_CHAN_RADAR) {
 550                 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR))
 551                         goto nla_put_failure;
 552                 if (large) {
 553                         u32 time;
 554
 555                         time = elapsed_jiffies_msecs(chan->dfs_state_entered);
 556
 557                         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_STATE,
 558                                         chan->dfs_state))
 559                                 goto nla_put_failure;
 560                         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_TIME,
 561                                         time))
 562                                 goto nla_put_failure;
 563                 }
 564         }
 565
 566         if (large) {
 567                 if ((chan->flags & IEEE80211_CHAN_NO_HT40MINUS) &&
 568                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_MINUS))
 569                         goto nla_put_failure;
 570                 if ((chan->flags & IEEE80211_CHAN_NO_HT40PLUS) &&
 571                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_PLUS))
 572                         goto nla_put_failure;
 573                 if ((chan->flags & IEEE80211_CHAN_NO_80MHZ) &&
 574                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_80MHZ))
 575                         goto nla_put_failure;
 576                 if ((chan->flags & IEEE80211_CHAN_NO_160MHZ) &&
 577                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_160MHZ))
 578                         goto nla_put_failure;
 579         }
 580
 581         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
 582                         DBM_TO_MBM(chan->max_power)))
 583                 goto nla_put_failure;
 584
 585         return 0;
 586
 587  nla_put_failure:
 588         return -ENOBUFS;
 589 }
 590
 591 /* netlink command implementations */
 592
 593 struct key_parse {
 594         struct key_params p;
 595         int idx;
 596         int type;
 597         bool def, defmgmt;
 598         bool def_uni, def_multi;
 599 };
 600
 601 static int nl80211_parse_key_new(struct nlattr *key, struct key_parse *k)
 602 {
 603         struct nlattr *tb[NL80211_KEY_MAX + 1];
 604         int err = nla_parse_nested(tb, NL80211_KEY_MAX, key,
 605                                    nl80211_key_policy);
 606         if (err)
 607                 return err;
 608
 609         k->def = !!tb[NL80211_KEY_DEFAULT];
 610         k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];
 611
 612         if (k->def) {
 613                 k->def_uni = true;
 614                 k->def_multi = true;
 615         }
 616         if (k->defmgmt)
 617                 k->def_multi = true;
 618
 619         if (tb[NL80211_KEY_IDX])
 620                 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);
 621
 622         if (tb[NL80211_KEY_DATA]) {
 623                 k->p.key = nla_data(tb[NL80211_KEY_DATA]);
 624                 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
 625         }
 626
 627         if (tb[NL80211_KEY_SEQ]) {
 628                 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
 629                 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
 630         }
 631
 632         if (tb[NL80211_KEY_CIPHER])
 633                 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);
 634
 635         if (tb[NL80211_KEY_TYPE]) {
 636                 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]);
 637                 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
 638                         return -EINVAL;
 639         }
 640
 641         if (tb[NL80211_KEY_DEFAULT_TYPES]) {
 642                 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
 643                 err = nla_parse_nested(kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
 644                                        tb[NL80211_KEY_DEFAULT_TYPES],
 645                                        nl80211_key_default_policy);
 646                 if (err)
 647                         return err;
 648
 649                 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
 650                 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
 651         }
 652
 653         return 0;
 654 }
 655
 656 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k)
 657 {
 658         if (info->attrs[NL80211_ATTR_KEY_DATA]) {
 659                 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
 660                 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
 661         }
 662
 663         if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
 664                 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
 665                 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
 666         }
 667
 668         if (info->attrs[NL80211_ATTR_KEY_IDX])
 669                 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
 670
 671         if (info->attrs[NL80211_ATTR_KEY_CIPHER])
 672                 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
 673
 674         k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
 675         k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT];
 676
 677         if (k->def) {
 678                 k->def_uni = true;
 679                 k->def_multi = true;
 680         }
 681         if (k->defmgmt)
 682                 k->def_multi = true;
 683
 684         if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
 685                 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
 686                 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
 687                         return -EINVAL;
 688         }
 689
 690         if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) {
 691                 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
 692                 int err = nla_parse_nested(
 693                                 kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
 694                                 info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES],
 695                                 nl80211_key_default_policy);
 696                 if (err)
 697                         return err;
 698
 699                 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
 700                 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
 701         }
 702
 703         return 0;
 704 }
 705
 706 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
 707 {
 708         int err;
 709
 710         memset(k, 0, sizeof(*k));
 711         k->idx = -1;
 712         k->type = -1;
 713
 714         if (info->attrs[NL80211_ATTR_KEY])
 715                 err = nl80211_parse_key_new(info->attrs[NL80211_ATTR_KEY], k);
 716         else
 717                 err = nl80211_parse_key_old(info, k);
 718
 719         if (err)
 720                 return err;
 721
 722         if (k->def && k->defmgmt)
 723                 return -EINVAL;
 724
 725         if (k->defmgmt) {
 726                 if (k->def_uni || !k->def_multi)
 727                         return -EINVAL;
 728         }
 729
 730         if (k->idx != -1) {
 731                 if (k->defmgmt) {
 732                         if (k->idx < 4 || k->idx > 5)
 733                                 return -EINVAL;
 734                 } else if (k->def) {
 735                         if (k->idx < 0 || k->idx > 3)
 736                                 return -EINVAL;
 737                 } else {
 738                         if (k->idx < 0 || k->idx > 5)
 739                                 return -EINVAL;
 740                 }
 741         }
 742
 743         return 0;
 744 }
 745
 746 static struct cfg80211_cached_keys *
 747 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
 748                        struct nlattr *keys, bool *no_ht)
 749 {
 750         struct key_parse parse;
 751         struct nlattr *key;
 752         struct cfg80211_cached_keys *result;
 753         int rem, err, def = 0;
 754
 755         result = kzalloc(sizeof(*result), GFP_KERNEL);
 756         if (!result)
 757                 return ERR_PTR(-ENOMEM);
 758
 759         result->def = -1;
 760         result->defmgmt = -1;
 761
 762         nla_for_each_nested(key, keys, rem) {
 763                 memset(&parse, 0, sizeof(parse));
 764                 parse.idx = -1;
 765
 766                 err = nl80211_parse_key_new(key, &parse);
 767                 if (err)
 768                         goto error;
 769                 err = -EINVAL;
 770                 if (!parse.p.key)
 771                         goto error;
 772                 if (parse.idx < 0 || parse.idx > 4)
 773                         goto error;
 774                 if (parse.def) {
 775                         if (def)
 776                                 goto error;
 777                         def = 1;
 778                         result->def = parse.idx;
 779                         if (!parse.def_uni || !parse.def_multi)
 780                                 goto error;
 781                 } else if (parse.defmgmt)
 782                         goto error;
 783                 err = cfg80211_validate_key_settings(rdev, &parse.p,
 784                                                      parse.idx, false, NULL);
 785                 if (err)
 786                         goto error;
 787                 result->params[parse.idx].cipher = parse.p.cipher;
 788                 result->params[parse.idx].key_len = parse.p.key_len;
 789                 result->params[parse.idx].key = result->data[parse.idx];
 790                 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
 791
 792                 if (parse.p.cipher == WLAN_CIPHER_SUITE_WEP40 ||
 793                     parse.p.cipher == WLAN_CIPHER_SUITE_WEP104) {
 794                         if (no_ht)
 795                                 *no_ht = true;
 796                 }
 797         }
 798
 799         return result;
 800  error:
 801         kfree(result);
 802         return ERR_PTR(err);
 803 }
 804
 805 static int nl80211_key_allowed(struct wireless_dev *wdev)
 806 {
 807         ASSERT_WDEV_LOCK(wdev);
 808
 809         switch (wdev->iftype) {
 810         case NL80211_IFTYPE_AP:
 811         case NL80211_IFTYPE_AP_VLAN:
 812         case NL80211_IFTYPE_P2P_GO:
 813         case NL80211_IFTYPE_MESH_POINT:
 814                 break;
 815         case NL80211_IFTYPE_ADHOC:
 816         case NL80211_IFTYPE_STATION:
 817         case NL80211_IFTYPE_P2P_CLIENT:
 818                 if (!wdev->current_bss)
 819                         return -ENOLINK;
 820                 break;
 821         default:
 822                 return -EINVAL;
 823         }
 824
 825         return 0;
 826 }
 827
 828 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes)
 829 {
 830         struct nlattr *nl_modes = nla_nest_start(msg, attr);
 831         int i;
 832
 833         if (!nl_modes)
 834                 goto nla_put_failure;
 835
 836         i = 0;
 837         while (ifmodes) {
 838                 if ((ifmodes & 1) && nla_put_flag(msg, i))
 839                         goto nla_put_failure;
 840                 ifmodes >>= 1;
 841                 i++;
 842         }
 843
 844         nla_nest_end(msg, nl_modes);
 845         return 0;
 846
 847 nla_put_failure:
 848         return -ENOBUFS;
 849 }
 850
 851 static int nl80211_put_iface_combinations(struct wiphy *wiphy,
 852                                           struct sk_buff *msg,
 853                                           bool large)
 854 {
 855         struct nlattr *nl_combis;
 856         int i, j;
 857
 858         nl_combis = nla_nest_start(msg,
 859                                 NL80211_ATTR_INTERFACE_COMBINATIONS);
 860         if (!nl_combis)
 861                 goto nla_put_failure;
 862
 863         for (i = 0; i < wiphy->n_iface_combinations; i++) {
 864                 const struct ieee80211_iface_combination *c;
 865                 struct nlattr *nl_combi, *nl_limits;
 866
 867                 c = &wiphy->iface_combinations[i];
 868
 869                 nl_combi = nla_nest_start(msg, i + 1);
 870                 if (!nl_combi)
 871                         goto nla_put_failure;
 872
 873                 nl_limits = nla_nest_start(msg, NL80211_IFACE_COMB_LIMITS);
 874                 if (!nl_limits)
 875                         goto nla_put_failure;
 876
 877                 for (j = 0; j < c->n_limits; j++) {
 878                         struct nlattr *nl_limit;
 879
 880                         nl_limit = nla_nest_start(msg, j + 1);
 881                         if (!nl_limit)
 882                                 goto nla_put_failure;
 883                         if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX,
 884                                         c->limits[j].max))
 885                                 goto nla_put_failure;
 886                         if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES,
 887                                                 c->limits[j].types))
 888                                 goto nla_put_failure;
 889                         nla_nest_end(msg, nl_limit);
 890                 }
 891
 892                 nla_nest_end(msg, nl_limits);
 893
 894                 if (c->beacon_int_infra_match &&
 895                     nla_put_flag(msg, NL80211_IFACE_COMB_STA_AP_BI_MATCH))
 896                         goto nla_put_failure;
 897                 if (nla_put_u32(msg, NL80211_IFACE_COMB_NUM_CHANNELS,
 898                                 c->num_different_channels) ||
 899                     nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM,
 900                                 c->max_interfaces))
 901                         goto nla_put_failure;
 902                 if (large &&
 903                     nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS,
 904                                 c->radar_detect_widths))
 905                         goto nla_put_failure;
 906
 907                 nla_nest_end(msg, nl_combi);
 908         }
 909
 910         nla_nest_end(msg, nl_combis);
 911
 912         return 0;
 913 nla_put_failure:
 914         return -ENOBUFS;
 915 }
 916
 917 #ifdef CONFIG_PM
 918 static int nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device *rdev,
 919                                         struct sk_buff *msg)
 920 {
 921         const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan->tcp;
 922         struct nlattr *nl_tcp;
 923
 924         if (!tcp)
 925                 return 0;
 926
 927         nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
 928         if (!nl_tcp)
 929                 return -ENOBUFS;
 930
 931         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
 932                         tcp->data_payload_max))
 933                 return -ENOBUFS;
 934
 935         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
 936                         tcp->data_payload_max))
 937                 return -ENOBUFS;
 938
 939         if (tcp->seq && nla_put_flag(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ))
 940                 return -ENOBUFS;
 941
 942         if (tcp->tok && nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
 943                                 sizeof(*tcp->tok), tcp->tok))
 944                 return -ENOBUFS;
 945
 946         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
 947                         tcp->data_interval_max))
 948                 return -ENOBUFS;
 949
 950         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
 951                         tcp->wake_payload_max))
 952                 return -ENOBUFS;
 953
 954         nla_nest_end(msg, nl_tcp);
 955         return 0;
 956 }
 957
 958 static int nl80211_send_wowlan(struct sk_buff *msg,
 959                                struct cfg80211_registered_device *dev,
 960                                bool large)
 961 {
 962         struct nlattr *nl_wowlan;
 963
 964         if (!dev->wiphy.wowlan)
 965                 return 0;
 966
 967         nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED);
 968         if (!nl_wowlan)
 969                 return -ENOBUFS;
 970
 971         if (((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_ANY) &&
 972              nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
 973             ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_DISCONNECT) &&
 974              nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
 975             ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT) &&
 976              nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
 977             ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) &&
 978              nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) ||
 979             ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) &&
 980              nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
 981             ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) &&
 982              nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
 983             ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) &&
 984              nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
 985             ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE) &&
 986              nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
 987                 return -ENOBUFS;
 988
 989         if (dev->wiphy.wowlan->n_patterns) {
 990                 struct nl80211_pattern_support pat = {
 991                         .max_patterns = dev->wiphy.wowlan->n_patterns,
 992                         .min_pattern_len = dev->wiphy.wowlan->pattern_min_len,
 993                         .max_pattern_len = dev->wiphy.wowlan->pattern_max_len,
 994                         .max_pkt_offset = dev->wiphy.wowlan->max_pkt_offset,
 995                 };
 996
 997                 if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
 998                             sizeof(pat), &pat))
 999                         return -ENOBUFS;
1000         }
1001
1002         if (large && nl80211_send_wowlan_tcp_caps(dev, msg))
1003                 return -ENOBUFS;
1004
1005         nla_nest_end(msg, nl_wowlan);
1006
1007         return 0;
1008 }
1009 #endif
1010
1011 static int nl80211_send_coalesce(struct sk_buff *msg,
1012                                  struct cfg80211_registered_device *dev)
1013 {
1014         struct nl80211_coalesce_rule_support rule;
1015
1016         if (!dev->wiphy.coalesce)
1017                 return 0;
1018
1019         rule.max_rules = dev->wiphy.coalesce->n_rules;
1020         rule.max_delay = dev->wiphy.coalesce->max_delay;
1021         rule.pat.max_patterns = dev->wiphy.coalesce->n_patterns;
1022         rule.pat.min_pattern_len = dev->wiphy.coalesce->pattern_min_len;
1023         rule.pat.max_pattern_len = dev->wiphy.coalesce->pattern_max_len;
1024         rule.pat.max_pkt_offset = dev->wiphy.coalesce->max_pkt_offset;
1025
1026         if (nla_put(msg, NL80211_ATTR_COALESCE_RULE, sizeof(rule), &rule))
1027                 return -ENOBUFS;
1028
1029         return 0;
1030 }
1031
1032 static int nl80211_send_band_rateinfo(struct sk_buff *msg,
1033                                       struct ieee80211_supported_band *sband)
1034 {
1035         struct nlattr *nl_rates, *nl_rate;
1036         struct ieee80211_rate *rate;
1037         int i;
1038
1039         /* add HT info */
1040         if (sband->ht_cap.ht_supported &&
1041             (nla_put(msg, NL80211_BAND_ATTR_HT_MCS_SET,
1042                      sizeof(sband->ht_cap.mcs),
1043                      &sband->ht_cap.mcs) ||
1044              nla_put_u16(msg, NL80211_BAND_ATTR_HT_CAPA,
1045                          sband->ht_cap.cap) ||
1046              nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
1047                         sband->ht_cap.ampdu_factor) ||
1048              nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
1049                         sband->ht_cap.ampdu_density)))
1050                 return -ENOBUFS;
1051
1052         /* add VHT info */
1053         if (sband->vht_cap.vht_supported &&
1054             (nla_put(msg, NL80211_BAND_ATTR_VHT_MCS_SET,
1055                      sizeof(sband->vht_cap.vht_mcs),
1056                      &sband->vht_cap.vht_mcs) ||
1057              nla_put_u32(msg, NL80211_BAND_ATTR_VHT_CAPA,
1058                          sband->vht_cap.cap)))
1059                 return -ENOBUFS;
1060
1061         /* add bitrates */
1062         nl_rates = nla_nest_start(msg, NL80211_BAND_ATTR_RATES);
1063         if (!nl_rates)
1064                 return -ENOBUFS;
1065
1066         for (i = 0; i < sband->n_bitrates; i++) {
1067                 nl_rate = nla_nest_start(msg, i);
1068                 if (!nl_rate)
1069                         return -ENOBUFS;
1070
1071                 rate = &sband->bitrates[i];
1072                 if (nla_put_u32(msg, NL80211_BITRATE_ATTR_RATE,
1073                                 rate->bitrate))
1074                         return -ENOBUFS;
1075                 if ((rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) &&
1076                     nla_put_flag(msg,
1077                                  NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE))
1078                         return -ENOBUFS;
1079
1080                 nla_nest_end(msg, nl_rate);
1081         }
1082
1083         nla_nest_end(msg, nl_rates);
1084
1085         return 0;
1086 }
1087
1088 static int
1089 nl80211_send_mgmt_stypes(struct sk_buff *msg,
1090                          const struct ieee80211_txrx_stypes *mgmt_stypes)
1091 {
1092         u16 stypes;
1093         struct nlattr *nl_ftypes, *nl_ifs;
1094         enum nl80211_iftype ift;
1095         int i;
1096
1097         if (!mgmt_stypes)
1098                 return 0;
1099
1100         nl_ifs = nla_nest_start(msg, NL80211_ATTR_TX_FRAME_TYPES);
1101         if (!nl_ifs)
1102                 return -ENOBUFS;
1103
1104         for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1105                 nl_ftypes = nla_nest_start(msg, ift);
1106                 if (!nl_ftypes)
1107                         return -ENOBUFS;
1108                 i = 0;
1109                 stypes = mgmt_stypes[ift].tx;
1110                 while (stypes) {
1111                         if ((stypes & 1) &&
1112                             nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1113                                         (i << 4) | IEEE80211_FTYPE_MGMT))
1114                                 return -ENOBUFS;
1115                         stypes >>= 1;
1116                         i++;
1117                 }
1118                 nla_nest_end(msg, nl_ftypes);
1119         }
1120
1121         nla_nest_end(msg, nl_ifs);
1122
1123         nl_ifs = nla_nest_start(msg, NL80211_ATTR_RX_FRAME_TYPES);
1124         if (!nl_ifs)
1125                 return -ENOBUFS;
1126
1127         for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1128                 nl_ftypes = nla_nest_start(msg, ift);
1129                 if (!nl_ftypes)
1130                         return -ENOBUFS;
1131                 i = 0;
1132                 stypes = mgmt_stypes[ift].rx;
1133                 while (stypes) {
1134                         if ((stypes & 1) &&
1135                             nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1136                                         (i << 4) | IEEE80211_FTYPE_MGMT))
1137                                 return -ENOBUFS;
1138                         stypes >>= 1;
1139                         i++;
1140                 }
1141                 nla_nest_end(msg, nl_ftypes);
1142         }
1143         nla_nest_end(msg, nl_ifs);
1144
1145         return 0;
1146 }
1147
1148 struct nl80211_dump_wiphy_state {
1149         s64 filter_wiphy;
1150         long start;
1151         long split_start, band_start, chan_start;
1152         bool split;
1153 };
1154
1155 static int nl80211_send_wiphy(struct cfg80211_registered_device *dev,
1156                               struct sk_buff *msg, u32 portid, u32 seq,
1157                               int flags, struct nl80211_dump_wiphy_state *state)
1158 {
1159         void *hdr;
1160         struct nlattr *nl_bands, *nl_band;
1161         struct nlattr *nl_freqs, *nl_freq;
1162         struct nlattr *nl_cmds;
1163         enum ieee80211_band band;
1164         struct ieee80211_channel *chan;
1165         int i;
1166         const struct ieee80211_txrx_stypes *mgmt_stypes =
1167                                 dev->wiphy.mgmt_stypes;
1168         u32 features;
1169
1170         hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_WIPHY);
1171         if (!hdr)
1172                 return -ENOBUFS;
1173
1174         if (WARN_ON(!state))
1175                 return -EINVAL;
1176
1177         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, dev->wiphy_idx) ||
1178             nla_put_string(msg, NL80211_ATTR_WIPHY_NAME,
1179                            wiphy_name(&dev->wiphy)) ||
1180             nla_put_u32(msg, NL80211_ATTR_GENERATION,
1181                         cfg80211_rdev_list_generation))
1182                 goto nla_put_failure;
1183
1184         switch (state->split_start) {
1185         case 0:
1186                 if (nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
1187                                dev->wiphy.retry_short) ||
1188                     nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
1189                                dev->wiphy.retry_long) ||
1190                     nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
1191                                 dev->wiphy.frag_threshold) ||
1192                     nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
1193                                 dev->wiphy.rts_threshold) ||
1194                     nla_put_u8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
1195                                dev->wiphy.coverage_class) ||
1196                     nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
1197                                dev->wiphy.max_scan_ssids) ||
1198                     nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS,
1199                                dev->wiphy.max_sched_scan_ssids) ||
1200                     nla_put_u16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
1201                                 dev->wiphy.max_scan_ie_len) ||
1202                     nla_put_u16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN,
1203                                 dev->wiphy.max_sched_scan_ie_len) ||
1204                     nla_put_u8(msg, NL80211_ATTR_MAX_MATCH_SETS,
1205                                dev->wiphy.max_match_sets))
1206                         goto nla_put_failure;
1207
1208                 if ((dev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) &&
1209                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_IBSS_RSN))
1210                         goto nla_put_failure;
1211                 if ((dev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) &&
1212                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_MESH_AUTH))
1213                         goto nla_put_failure;
1214                 if ((dev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
1215                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_AP_UAPSD))
1216                         goto nla_put_failure;
1217                 if ((dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) &&
1218                     nla_put_flag(msg, NL80211_ATTR_ROAM_SUPPORT))
1219                         goto nla_put_failure;
1220                 if ((dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) &&
1221                     nla_put_flag(msg, NL80211_ATTR_TDLS_SUPPORT))
1222                         goto nla_put_failure;
1223                 if ((dev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) &&
1224                     nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP))
1225                         goto nla_put_failure;
1226                 if ((dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ) &&
1227                     nla_put_flag(msg, WIPHY_FLAG_SUPPORTS_5_10_MHZ))
1228                         goto nla_put_failure;
1229
1230                 state->split_start++;
1231                 if (state->split)
1232                         break;
1233         case 1:
1234                 if (nla_put(msg, NL80211_ATTR_CIPHER_SUITES,
1235                             sizeof(u32) * dev->wiphy.n_cipher_suites,
1236                             dev->wiphy.cipher_suites))
1237                         goto nla_put_failure;
1238
1239                 if (nla_put_u8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
1240                                dev->wiphy.max_num_pmkids))
1241                         goto nla_put_failure;
1242
1243                 if ((dev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
1244                     nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE))
1245                         goto nla_put_failure;
1246
1247                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX,
1248                                 dev->wiphy.available_antennas_tx) ||
1249                     nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX,
1250                                 dev->wiphy.available_antennas_rx))
1251                         goto nla_put_failure;
1252
1253                 if ((dev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) &&
1254                     nla_put_u32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD,
1255                                 dev->wiphy.probe_resp_offload))
1256                         goto nla_put_failure;
1257
1258                 if ((dev->wiphy.available_antennas_tx ||
1259                      dev->wiphy.available_antennas_rx) &&
1260                     dev->ops->get_antenna) {
1261                         u32 tx_ant = 0, rx_ant = 0;
1262                         int res;
1263                         res = rdev_get_antenna(dev, &tx_ant, &rx_ant);
1264                         if (!res) {
1265                                 if (nla_put_u32(msg,
1266                                                 NL80211_ATTR_WIPHY_ANTENNA_TX,
1267                                                 tx_ant) ||
1268                                     nla_put_u32(msg,
1269                                                 NL80211_ATTR_WIPHY_ANTENNA_RX,
1270                                                 rx_ant))
1271                                         goto nla_put_failure;
1272                         }
1273                 }
1274
1275                 state->split_start++;
1276                 if (state->split)
1277                         break;
1278         case 2:
1279                 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES,
1280                                         dev->wiphy.interface_modes))
1281                                 goto nla_put_failure;
1282                 state->split_start++;
1283                 if (state->split)
1284                         break;
1285         case 3:
1286                 nl_bands = nla_nest_start(msg, NL80211_ATTR_WIPHY_BANDS);
1287                 if (!nl_bands)
1288                         goto nla_put_failure;
1289
1290                 for (band = state->band_start;
1291                      band < IEEE80211_NUM_BANDS; band++) {
1292                         struct ieee80211_supported_band *sband;
1293
1294                         sband = dev->wiphy.bands[band];
1295
1296                         if (!sband)
1297                                 continue;
1298
1299                         nl_band = nla_nest_start(msg, band);
1300                         if (!nl_band)
1301                                 goto nla_put_failure;
1302
1303                         switch (state->chan_start) {
1304                         case 0:
1305                                 if (nl80211_send_band_rateinfo(msg, sband))
1306                                         goto nla_put_failure;
1307                                 state->chan_start++;
1308                                 if (state->split)
1309                                         break;
1310                         default:
1311                                 /* add frequencies */
1312                                 nl_freqs = nla_nest_start(
1313                                         msg, NL80211_BAND_ATTR_FREQS);
1314                                 if (!nl_freqs)
1315                                         goto nla_put_failure;
1316
1317                                 for (i = state->chan_start - 1;
1318                                      i < sband->n_channels;
1319                                      i++) {
1320                                         nl_freq = nla_nest_start(msg, i);
1321                                         if (!nl_freq)
1322                                                 goto nla_put_failure;
1323
1324                                         chan = &sband->channels[i];
1325
1326                                         if (nl80211_msg_put_channel(
1327                                                         msg, chan,
1328                                                         state->split))
1329                                                 goto nla_put_failure;
1330
1331                                         nla_nest_end(msg, nl_freq);
1332                                         if (state->split)
1333                                                 break;
1334                                 }
1335                                 if (i < sband->n_channels)
1336                                         state->chan_start = i + 2;
1337                                 else
1338                                         state->chan_start = 0;
1339                                 nla_nest_end(msg, nl_freqs);
1340                         }
1341
1342                         nla_nest_end(msg, nl_band);
1343
1344                         if (state->split) {
1345                                 /* start again here */
1346                                 if (state->chan_start)
1347                                         band--;
1348                                 break;
1349                         }
1350                 }
1351                 nla_nest_end(msg, nl_bands);
1352
1353                 if (band < IEEE80211_NUM_BANDS)
1354                         state->band_start = band + 1;
1355                 else
1356                         state->band_start = 0;
1357
1358                 /* if bands & channels are done, continue outside */
1359                 if (state->band_start == 0 && state->chan_start == 0)
1360                         state->split_start++;
1361                 if (state->split)
1362                         break;
1363         case 4:
1364                 nl_cmds = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_COMMANDS);
1365                 if (!nl_cmds)
1366                         goto nla_put_failure;
1367
1368                 i = 0;
1369 #define CMD(op, n)                                                      \
1370                  do {                                                   \
1371                         if (dev->ops->op) {                             \
1372                                 i++;                                    \
1373                                 if (nla_put_u32(msg, i, NL80211_CMD_ ## n)) \
1374                                         goto nla_put_failure;           \
1375                         }                                               \
1376                 } while (0)
1377
1378                 CMD(add_virtual_intf, NEW_INTERFACE);
1379                 CMD(change_virtual_intf, SET_INTERFACE);
1380                 CMD(add_key, NEW_KEY);
1381                 CMD(start_ap, START_AP);
1382                 CMD(add_station, NEW_STATION);
1383                 CMD(add_mpath, NEW_MPATH);
1384                 CMD(update_mesh_config, SET_MESH_CONFIG);
1385                 CMD(change_bss, SET_BSS);
1386                 CMD(auth, AUTHENTICATE);
1387                 CMD(assoc, ASSOCIATE);
1388                 CMD(deauth, DEAUTHENTICATE);
1389                 CMD(disassoc, DISASSOCIATE);
1390                 CMD(join_ibss, JOIN_IBSS);
1391                 CMD(join_mesh, JOIN_MESH);
1392                 CMD(set_pmksa, SET_PMKSA);
1393                 CMD(del_pmksa, DEL_PMKSA);
1394                 CMD(flush_pmksa, FLUSH_PMKSA);
1395                 if (dev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)
1396                         CMD(remain_on_channel, REMAIN_ON_CHANNEL);
1397                 CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
1398                 CMD(mgmt_tx, FRAME);
1399                 CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL);
1400                 if (dev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
1401                         i++;
1402                         if (nla_put_u32(msg, i, NL80211_CMD_SET_WIPHY_NETNS))
1403                                 goto nla_put_failure;
1404                 }
1405                 if (dev->ops->set_monitor_channel || dev->ops->start_ap ||
1406                     dev->ops->join_mesh) {
1407                         i++;
1408                         if (nla_put_u32(msg, i, NL80211_CMD_SET_CHANNEL))
1409                                 goto nla_put_failure;
1410                 }
1411                 CMD(set_wds_peer, SET_WDS_PEER);
1412                 if (dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) {
1413                         CMD(tdls_mgmt, TDLS_MGMT);
1414                         CMD(tdls_oper, TDLS_OPER);
1415                 }
1416                 if (dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN)
1417                         CMD(sched_scan_start, START_SCHED_SCAN);
1418                 CMD(probe_client, PROBE_CLIENT);
1419                 CMD(set_noack_map, SET_NOACK_MAP);
1420                 if (dev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) {
1421                         i++;
1422                         if (nla_put_u32(msg, i, NL80211_CMD_REGISTER_BEACONS))
1423                                 goto nla_put_failure;
1424                 }
1425                 CMD(start_p2p_device, START_P2P_DEVICE);
1426                 CMD(set_mcast_rate, SET_MCAST_RATE);
1427                 if (state->split) {
1428                         CMD(crit_proto_start, CRIT_PROTOCOL_START);
1429                         CMD(crit_proto_stop, CRIT_PROTOCOL_STOP);
1430                         if (dev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH)
1431                                 CMD(channel_switch, CHANNEL_SWITCH);
1432                 }
1433
1434 #ifdef CONFIG_NL80211_TESTMODE
1435                 CMD(testmode_cmd, TESTMODE);
1436 #endif
1437
1438 #undef CMD
1439
1440                 if (dev->ops->connect || dev->ops->auth) {
1441                         i++;
1442                         if (nla_put_u32(msg, i, NL80211_CMD_CONNECT))
1443                                 goto nla_put_failure;
1444                 }
1445
1446                 if (dev->ops->disconnect || dev->ops->deauth) {
1447                         i++;
1448                         if (nla_put_u32(msg, i, NL80211_CMD_DISCONNECT))
1449                                 goto nla_put_failure;
1450                 }
1451
1452                 nla_nest_end(msg, nl_cmds);
1453                 state->split_start++;
1454                 if (state->split)
1455                         break;
1456         case 5:
1457                 if (dev->ops->remain_on_channel &&
1458                     (dev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) &&
1459                     nla_put_u32(msg,
1460                                 NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
1461                                 dev->wiphy.max_remain_on_channel_duration))
1462                         goto nla_put_failure;
1463
1464                 if ((dev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) &&
1465                     nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK))
1466                         goto nla_put_failure;
1467
1468                 if (nl80211_send_mgmt_stypes(msg, mgmt_stypes))
1469                         goto nla_put_failure;
1470                 state->split_start++;
1471                 if (state->split)
1472                         break;
1473         case 6:
1474 #ifdef CONFIG_PM
1475                 if (nl80211_send_wowlan(msg, dev, state->split))
1476                         goto nla_put_failure;
1477                 state->split_start++;
1478                 if (state->split)
1479                         break;
1480 #else
1481                 state->split_start++;
1482 #endif
1483         case 7:
1484                 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES,
1485                                         dev->wiphy.software_iftypes))
1486                         goto nla_put_failure;
1487
1488                 if (nl80211_put_iface_combinations(&dev->wiphy, msg,
1489                                                    state->split))
1490                         goto nla_put_failure;
1491
1492                 state->split_start++;
1493                 if (state->split)
1494                         break;
1495         case 8:
1496                 if ((dev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) &&
1497                     nla_put_u32(msg, NL80211_ATTR_DEVICE_AP_SME,
1498                                 dev->wiphy.ap_sme_capa))
1499                         goto nla_put_failure;
1500
1501                 features = dev->wiphy.features;
1502                 /*
1503                  * We can only add the per-channel limit information if the
1504                  * dump is split, otherwise it makes it too big. Therefore
1505                  * only advertise it in that case.
1506                  */
1507                 if (state->split)
1508                         features |= NL80211_FEATURE_ADVERTISE_CHAN_LIMITS;
1509                 if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS, features))
1510                         goto nla_put_failure;
1511
1512                 if (dev->wiphy.ht_capa_mod_mask &&
1513                     nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK,
1514                             sizeof(*dev->wiphy.ht_capa_mod_mask),
1515                             dev->wiphy.ht_capa_mod_mask))
1516                         goto nla_put_failure;
1517
1518                 if (dev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME &&
1519                     dev->wiphy.max_acl_mac_addrs &&
1520                     nla_put_u32(msg, NL80211_ATTR_MAC_ACL_MAX,
1521                                 dev->wiphy.max_acl_mac_addrs))
1522                         goto nla_put_failure;
1523
1524                 /*
1525                  * Any information below this point is only available to
1526                  * applications that can deal with it being split. This
1527                  * helps ensure that newly added capabilities don't break
1528                  * older tools by overrunning their buffers.
1529                  *
1530                  * We still increment split_start so that in the split
1531                  * case we'll continue with more data in the next round,
1532                  * but break unconditionally so unsplit data stops here.
1533                  */
1534                 state->split_start++;
1535                 break;
1536         case 9:
1537                 if (dev->wiphy.extended_capabilities &&
1538                     (nla_put(msg, NL80211_ATTR_EXT_CAPA,
1539                              dev->wiphy.extended_capabilities_len,
1540                              dev->wiphy.extended_capabilities) ||
1541                      nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
1542                              dev->wiphy.extended_capabilities_len,
1543                              dev->wiphy.extended_capabilities_mask)))
1544                         goto nla_put_failure;
1545
1546                 if (dev->wiphy.vht_capa_mod_mask &&
1547                     nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK,
1548                             sizeof(*dev->wiphy.vht_capa_mod_mask),
1549                             dev->wiphy.vht_capa_mod_mask))
1550                         goto nla_put_failure;
1551
1552                 state->split_start++;
1553                 break;
1554         case 10:
1555                 if (nl80211_send_coalesce(msg, dev))
1556                         goto nla_put_failure;
1557
1558                 /* done */
1559                 state->split_start = 0;
1560                 break;
1561         }
1562         return genlmsg_end(msg, hdr);
1563
1564  nla_put_failure:
1565         genlmsg_cancel(msg, hdr);
1566         return -EMSGSIZE;
1567 }
1568
1569 static int nl80211_dump_wiphy_parse(struct sk_buff *skb,
1570                                     struct netlink_callback *cb,
1571                                     struct nl80211_dump_wiphy_state *state)
1572 {
1573         struct nlattr **tb = nl80211_fam.attrbuf;
1574         int ret = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
1575                               tb, nl80211_fam.maxattr, nl80211_policy);
1576         /* ignore parse errors for backward compatibility */
1577         if (ret)
1578                 return 0;
1579
1580         state->split = tb[NL80211_ATTR_SPLIT_WIPHY_DUMP];
1581         if (tb[NL80211_ATTR_WIPHY])
1582                 state->filter_wiphy = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
1583         if (tb[NL80211_ATTR_WDEV])
1584                 state->filter_wiphy = nla_get_u64(tb[NL80211_ATTR_WDEV]) >> 32;
1585         if (tb[NL80211_ATTR_IFINDEX]) {
1586                 struct net_device *netdev;
1587                 struct cfg80211_registered_device *rdev;
1588                 int ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
1589
1590                 netdev = dev_get_by_index(sock_net(skb->sk), ifidx);
1591                 if (!netdev)
1592                         return -ENODEV;
1593                 if (netdev->ieee80211_ptr) {
1594                         rdev = wiphy_to_dev(
1595                                 netdev->ieee80211_ptr->wiphy);
1596                         state->filter_wiphy = rdev->wiphy_idx;
1597                 }
1598                 dev_put(netdev);
1599         }
1600
1601         return 0;
1602 }
1603
1604 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
1605 {
1606         int idx = 0, ret;
1607         struct nl80211_dump_wiphy_state *state = (void *)cb->args[0];
1608         struct cfg80211_registered_device *dev;
1609
1610         rtnl_lock();
1611         if (!state) {
1612                 state = kzalloc(sizeof(*state), GFP_KERNEL);
1613                 if (!state) {
1614                         rtnl_unlock();
1615                         return -ENOMEM;
1616                 }
1617                 state->filter_wiphy = -1;
1618                 ret = nl80211_dump_wiphy_parse(skb, cb, state);
1619                 if (ret) {
1620                         kfree(state);
1621                         rtnl_unlock();
1622                         return ret;
1623                 }
1624                 cb->args[0] = (long)state;
1625         }
1626
1627         list_for_each_entry(dev, &cfg80211_rdev_list, list) {
1628                 if (!net_eq(wiphy_net(&dev->wiphy), sock_net(skb->sk)))
1629                         continue;
1630                 if (++idx <= state->start)
1631                         continue;
1632                 if (state->filter_wiphy != -1 &&
1633                     state->filter_wiphy != dev->wiphy_idx)
1634                         continue;
1635                 /* attempt to fit multiple wiphy data chunks into the skb */
1636                 do {
1637                         ret = nl80211_send_wiphy(dev, skb,
1638                                                  NETLINK_CB(cb->skb).portid,
1639                                                  cb->nlh->nlmsg_seq,
1640                                                  NLM_F_MULTI, state);
1641                         if (ret < 0) {
1642                                 /*
1643                                  * If sending the wiphy data didn't fit (ENOBUFS
1644                                  * or EMSGSIZE returned), this SKB is still
1645                                  * empty (so it's not too big because another
1646                                  * wiphy dataset is already in the skb) and
1647                                  * we've not tried to adjust the dump allocation
1648                                  * yet ... then adjust the alloc size to be
1649                                  * bigger, and return 1 but with the empty skb.
1650                                  * This results in an empty message being RX'ed
1651                                  * in userspace, but that is ignored.
1652                                  *
1653                                  * We can then retry with the larger buffer.
1654                                  */
1655                                 if ((ret == -ENOBUFS || ret == -EMSGSIZE) &&
1656                                     !skb->len &&
1657                                     cb->min_dump_alloc < 4096) {
1658                                         cb->min_dump_alloc = 4096;
1659                                         rtnl_unlock();
1660                                         return 1;
1661                                 }
1662                                 idx--;
1663                                 break;
1664                         }
1665                 } while (state->split_start > 0);
1666                 break;
1667         }
1668         rtnl_unlock();
1669
1670         state->start = idx;
1671
1672         return skb->len;
1673 }
1674
1675 static int nl80211_dump_wiphy_done(struct netlink_callback *cb)
1676 {
1677         kfree((void *)cb->args[0]);
1678         return 0;
1679 }
1680
1681 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
1682 {
1683         struct sk_buff *msg;
1684         struct cfg80211_registered_device *dev = info->user_ptr[0];
1685         struct nl80211_dump_wiphy_state state = {};
1686
1687         msg = nlmsg_new(4096, GFP_KERNEL);
1688         if (!msg)
1689                 return -ENOMEM;
1690
1691         if (nl80211_send_wiphy(dev, msg, info->snd_portid, info->snd_seq, 0,
1692                                &state) < 0) {
1693                 nlmsg_free(msg);
1694                 return -ENOBUFS;
1695         }
1696
1697         return genlmsg_reply(msg, info);
1698 }
1699
1700 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
1701         [NL80211_TXQ_ATTR_QUEUE]                = { .type = NLA_U8 },
1702         [NL80211_TXQ_ATTR_TXOP]                 = { .type = NLA_U16 },
1703         [NL80211_TXQ_ATTR_CWMIN]                = { .type = NLA_U16 },
1704         [NL80211_TXQ_ATTR_CWMAX]                = { .type = NLA_U16 },
1705         [NL80211_TXQ_ATTR_AIFS]                 = { .type = NLA_U8 },
1706 };
1707
1708 static int parse_txq_params(struct nlattr *tb[],
1709                             struct ieee80211_txq_params *txq_params)
1710 {
1711         if (!tb[NL80211_TXQ_ATTR_AC] || !tb[NL80211_TXQ_ATTR_TXOP] ||
1712             !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
1713             !tb[NL80211_TXQ_ATTR_AIFS])
1714                 return -EINVAL;
1715
1716         txq_params->ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]);
1717         txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
1718         txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
1719         txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
1720         txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
1721
1722         if (txq_params->ac >= NL80211_NUM_ACS)
1723                 return -EINVAL;
1724
1725         return 0;
1726 }
1727
1728 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
1729 {
1730         /*
1731          * You can only set the channel explicitly for WDS interfaces,
1732          * all others have their channel managed via their respective
1733          * "establish a connection" command (connect, join, ...)
1734          *
1735          * For AP/GO and mesh mode, the channel can be set with the
1736          * channel userspace API, but is only stored and passed to the
1737          * low-level driver when the AP starts or the mesh is joined.
1738          * This is for backward compatibility, userspace can also give
1739          * the channel in the start-ap or join-mesh commands instead.
1740          *
1741          * Monitors are special as they are normally slaved to
1742          * whatever else is going on, so they have their own special
1743          * operation to set the monitor channel if possible.
1744          */
1745         return !wdev ||
1746                 wdev->iftype == NL80211_IFTYPE_AP ||
1747                 wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
1748                 wdev->iftype == NL80211_IFTYPE_MONITOR ||
1749                 wdev->iftype == NL80211_IFTYPE_P2P_GO;
1750 }
1751
1752 static int nl80211_parse_chandef(struct cfg80211_registered_device *rdev,
1753                                  struct genl_info *info,
1754                                  struct cfg80211_chan_def *chandef)
1755 {
1756         u32 control_freq;
1757
1758         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
1759                 return -EINVAL;
1760
1761         control_freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
1762
1763         chandef->chan = ieee80211_get_channel(&rdev->wiphy, control_freq);
1764         chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
1765         chandef->center_freq1 = control_freq;
1766         chandef->center_freq2 = 0;
1767
1768         /* Primary channel not allowed */
1769         if (!chandef->chan || chandef->chan->flags & IEEE80211_CHAN_DISABLED)
1770                 return -EINVAL;
1771
1772         if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
1773                 enum nl80211_channel_type chantype;
1774
1775                 chantype = nla_get_u32(
1776                                 info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
1777
1778                 switch (chantype) {
1779                 case NL80211_CHAN_NO_HT:
1780                 case NL80211_CHAN_HT20:
1781                 case NL80211_CHAN_HT40PLUS:
1782                 case NL80211_CHAN_HT40MINUS:
1783                         cfg80211_chandef_create(chandef, chandef->chan,
1784                                                 chantype);
1785                         break;
1786                 default:
1787                         return -EINVAL;
1788                 }
1789         } else if (info->attrs[NL80211_ATTR_CHANNEL_WIDTH]) {
1790                 chandef->width =
1791                         nla_get_u32(info->attrs[NL80211_ATTR_CHANNEL_WIDTH]);
1792                 if (info->attrs[NL80211_ATTR_CENTER_FREQ1])
1793                         chandef->center_freq1 =
1794                                 nla_get_u32(
1795                                         info->attrs[NL80211_ATTR_CENTER_FREQ1]);
1796                 if (info->attrs[NL80211_ATTR_CENTER_FREQ2])
1797                         chandef->center_freq2 =
1798                                 nla_get_u32(
1799                                         info->attrs[NL80211_ATTR_CENTER_FREQ2]);
1800         }
1801
1802         if (!cfg80211_chandef_valid(chandef))
1803                 return -EINVAL;
1804
1805         if (!cfg80211_chandef_usable(&rdev->wiphy, chandef,
1806                                      IEEE80211_CHAN_DISABLED))
1807                 return -EINVAL;
1808
1809         if ((chandef->width == NL80211_CHAN_WIDTH_5 ||
1810              chandef->width == NL80211_CHAN_WIDTH_10) &&
1811             !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ))
1812                 return -EINVAL;
1813
1814         return 0;
1815 }
1816
1817 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
1818                                  struct wireless_dev *wdev,
1819                                  struct genl_info *info)
1820 {
1821         struct cfg80211_chan_def chandef;
1822         int result;
1823         enum nl80211_iftype iftype = NL80211_IFTYPE_MONITOR;
1824
1825         if (wdev)
1826                 iftype = wdev->iftype;
1827
1828         if (!nl80211_can_set_dev_channel(wdev))
1829                 return -EOPNOTSUPP;
1830
1831         result = nl80211_parse_chandef(rdev, info, &chandef);
1832         if (result)
1833                 return result;
1834
1835         switch (iftype) {
1836         case NL80211_IFTYPE_AP:
1837         case NL80211_IFTYPE_P2P_GO:
1838                 if (wdev->beacon_interval) {
1839                         result = -EBUSY;
1840                         break;
1841                 }
1842                 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &chandef)) {
1843                         result = -EINVAL;
1844                         break;
1845                 }
1846                 wdev->preset_chandef = chandef;
1847                 result = 0;
1848                 break;
1849         case NL80211_IFTYPE_MESH_POINT:
1850                 result = cfg80211_set_mesh_channel(rdev, wdev, &chandef);
1851                 break;
1852         case NL80211_IFTYPE_MONITOR:
1853                 result = cfg80211_set_monitor_channel(rdev, &chandef);
1854                 break;
1855         default:
1856                 result = -EINVAL;
1857         }
1858
1859         return result;
1860 }
1861
1862 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
1863 {
1864         struct cfg80211_registered_device *rdev = info->user_ptr[0];
1865         struct net_device *netdev = info->user_ptr[1];
1866
1867         return __nl80211_set_channel(rdev, netdev->ieee80211_ptr, info);
1868 }
1869
1870 static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info)
1871 {
1872         struct cfg80211_registered_device *rdev = info->user_ptr[0];
1873         struct net_device *dev = info->user_ptr[1];
1874         struct wireless_dev *wdev = dev->ieee80211_ptr;
1875         const u8 *bssid;
1876
1877         if (!info->attrs[NL80211_ATTR_MAC])
1878                 return -EINVAL;
1879
1880         if (netif_running(dev))
1881                 return -EBUSY;
1882
1883         if (!rdev->ops->set_wds_peer)
1884                 return -EOPNOTSUPP;
1885
1886         if (wdev->iftype != NL80211_IFTYPE_WDS)
1887                 return -EOPNOTSUPP;
1888
1889         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
1890         return rdev_set_wds_peer(rdev, dev, bssid);
1891 }
1892
1893
1894 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
1895 {
1896         struct cfg80211_registered_device *rdev;
1897         struct net_device *netdev = NULL;
1898         struct wireless_dev *wdev;
1899         int result = 0, rem_txq_params = 0;
1900         struct nlattr *nl_txq_params;
1901         u32 changed;
1902         u8 retry_short = 0, retry_long = 0;
1903         u32 frag_threshold = 0, rts_threshold = 0;
1904         u8 coverage_class = 0;
1905
1906         ASSERT_RTNL();
1907
1908         /*
1909          * Try to find the wiphy and netdev. Normally this
1910          * function shouldn't need the netdev, but this is
1911          * done for backward compatibility -- previously
1912          * setting the channel was done per wiphy, but now
1913          * it is per netdev. Previous userland like hostapd
1914          * also passed a netdev to set_wiphy, so that it is
1915          * possible to let that go to the right netdev!
1916          */
1917
1918         if (info->attrs[NL80211_ATTR_IFINDEX]) {
1919                 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
1920
1921                 netdev = dev_get_by_index(genl_info_net(info), ifindex);
1922                 if (netdev && netdev->ieee80211_ptr)
1923                         rdev = wiphy_to_dev(netdev->ieee80211_ptr->wiphy);
1924                 else
1925                         netdev = NULL;
1926         }
1927
1928         if (!netdev) {
1929                 rdev = __cfg80211_rdev_from_attrs(genl_info_net(info),
1930                                                   info->attrs);
1931                 if (IS_ERR(rdev))
1932                         return PTR_ERR(rdev);
1933                 wdev = NULL;
1934                 netdev = NULL;
1935                 result = 0;
1936         } else
1937                 wdev = netdev->ieee80211_ptr;
1938
1939         /*
1940          * end workaround code, by now the rdev is available
1941          * and locked, and wdev may or may not be NULL.
1942          */
1943
1944         if (info->attrs[NL80211_ATTR_WIPHY_NAME])
1945                 result = cfg80211_dev_rename(
1946                         rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
1947
1948         if (result)
1949                 goto bad_res;
1950
1951         if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
1952                 struct ieee80211_txq_params txq_params;
1953                 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
1954
1955                 if (!rdev->ops->set_txq_params) {
1956                         result = -EOPNOTSUPP;
1957                         goto bad_res;
1958                 }
1959
1960                 if (!netdev) {
1961                         result = -EINVAL;
1962                         goto bad_res;
1963                 }
1964
1965                 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
1966                     netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
1967                         result = -EINVAL;
1968                         goto bad_res;
1969                 }
1970
1971                 if (!netif_running(netdev)) {
1972                         result = -ENETDOWN;
1973                         goto bad_res;
1974                 }
1975
1976                 nla_for_each_nested(nl_txq_params,
1977                                     info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
1978                                     rem_txq_params) {
1979                         nla_parse(tb, NL80211_TXQ_ATTR_MAX,
1980                                   nla_data(nl_txq_params),
1981                                   nla_len(nl_txq_params),
1982                                   txq_params_policy);
1983                         result = parse_txq_params(tb, &txq_params);
1984                         if (result)
1985                                 goto bad_res;
1986
1987                         result = rdev_set_txq_params(rdev, netdev,
1988                                                      &txq_params);
1989                         if (result)
1990                                 goto bad_res;
1991                 }
1992         }
1993
1994         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
1995                 result = __nl80211_set_channel(rdev,
1996                                 nl80211_can_set_dev_channel(wdev) ? wdev : NULL,
1997                                 info);
1998                 if (result)
1999                         goto bad_res;
2000         }
2001
2002         if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
2003                 struct wireless_dev *txp_wdev = wdev;
2004                 enum nl80211_tx_power_setting type;
2005                 int idx, mbm = 0;
2006
2007                 if (!(rdev->wiphy.features & NL80211_FEATURE_VIF_TXPOWER))
2008                         txp_wdev = NULL;
2009
2010                 if (!rdev->ops->set_tx_power) {
2011                         result = -EOPNOTSUPP;
2012                         goto bad_res;
2013                 }
2014
2015                 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
2016                 type = nla_get_u32(info->attrs[idx]);
2017
2018                 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
2019                     (type != NL80211_TX_POWER_AUTOMATIC)) {
2020                         result = -EINVAL;
2021                         goto bad_res;
2022                 }
2023
2024                 if (type != NL80211_TX_POWER_AUTOMATIC) {
2025                         idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
2026                         mbm = nla_get_u32(info->attrs[idx]);
2027                 }
2028
2029                 result = rdev_set_tx_power(rdev, txp_wdev, type, mbm);
2030                 if (result)
2031                         goto bad_res;
2032         }
2033
2034         if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
2035             info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
2036                 u32 tx_ant, rx_ant;
2037                 if ((!rdev->wiphy.available_antennas_tx &&
2038                      !rdev->wiphy.available_antennas_rx) ||
2039                     !rdev->ops->set_antenna) {
2040                         result = -EOPNOTSUPP;
2041                         goto bad_res;
2042                 }
2043
2044                 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
2045                 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
2046
2047                 /* reject antenna configurations which don't match the
2048                  * available antenna masks, except for the "all" mask */
2049                 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) ||
2050                     (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx))) {
2051                         result = -EINVAL;
2052                         goto bad_res;
2053                 }
2054
2055                 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx;
2056                 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx;
2057
2058                 result = rdev_set_antenna(rdev, tx_ant, rx_ant);
2059                 if (result)
2060                         goto bad_res;
2061         }
2062
2063         changed = 0;
2064
2065         if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
2066                 retry_short = nla_get_u8(
2067                         info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
2068                 if (retry_short == 0) {
2069                         result = -EINVAL;
2070                         goto bad_res;
2071                 }
2072                 changed |= WIPHY_PARAM_RETRY_SHORT;
2073         }
2074
2075         if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
2076                 retry_long = nla_get_u8(
2077                         info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
2078                 if (retry_long == 0) {
2079                         result = -EINVAL;
2080                         goto bad_res;
2081                 }
2082                 changed |= WIPHY_PARAM_RETRY_LONG;
2083         }
2084
2085         if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
2086                 frag_threshold = nla_get_u32(
2087                         info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
2088                 if (frag_threshold < 256) {
2089                         result = -EINVAL;
2090                         goto bad_res;
2091                 }
2092                 if (frag_threshold != (u32) -1) {
2093                         /*
2094                          * Fragments (apart from the last one) are required to
2095                          * have even length. Make the fragmentation code
2096                          * simpler by stripping LSB should someone try to use
2097                          * odd threshold value.
2098                          */
2099                         frag_threshold &= ~0x1;
2100                 }
2101                 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
2102         }
2103
2104         if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
2105                 rts_threshold = nla_get_u32(
2106                         info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
2107                 changed |= WIPHY_PARAM_RTS_THRESHOLD;
2108         }
2109
2110         if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
2111                 coverage_class = nla_get_u8(
2112                         info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
2113                 changed |= WIPHY_PARAM_COVERAGE_CLASS;
2114         }
2115
2116         if (changed) {
2117                 u8 old_retry_short, old_retry_long;
2118                 u32 old_frag_threshold, old_rts_threshold;
2119                 u8 old_coverage_class;
2120
2121                 if (!rdev->ops->set_wiphy_params) {
2122                         result = -EOPNOTSUPP;
2123                         goto bad_res;
2124                 }
2125
2126                 old_retry_short = rdev->wiphy.retry_short;
2127                 old_retry_long = rdev->wiphy.retry_long;
2128                 old_frag_threshold = rdev->wiphy.frag_threshold;
2129                 old_rts_threshold = rdev->wiphy.rts_threshold;
2130                 old_coverage_class = rdev->wiphy.coverage_class;
2131
2132                 if (changed & WIPHY_PARAM_RETRY_SHORT)
2133                         rdev->wiphy.retry_short = retry_short;
2134                 if (changed & WIPHY_PARAM_RETRY_LONG)
2135                         rdev->wiphy.retry_long = retry_long;
2136                 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
2137                         rdev->wiphy.frag_threshold = frag_threshold;
2138                 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
2139                         rdev->wiphy.rts_threshold = rts_threshold;
2140                 if (changed & WIPHY_PARAM_COVERAGE_CLASS)
2141                         rdev->wiphy.coverage_class = coverage_class;
2142
2143                 result = rdev_set_wiphy_params(rdev, changed);
2144                 if (result) {
2145                         rdev->wiphy.retry_short = old_retry_short;
2146                         rdev->wiphy.retry_long = old_retry_long;
2147                         rdev->wiphy.frag_threshold = old_frag_threshold;
2148                         rdev->wiphy.rts_threshold = old_rts_threshold;
2149                         rdev->wiphy.coverage_class = old_coverage_class;
2150                 }
2151         }
2152
2153  bad_res:
2154         if (netdev)
2155                 dev_put(netdev);
2156         return result;
2157 }
2158
2159 static inline u64 wdev_id(struct wireless_dev *wdev)
2160 {
2161         return (u64)wdev->identifier |
2162                ((u64)wiphy_to_dev(wdev->wiphy)->wiphy_idx << 32);
2163 }
2164
2165 static int nl80211_send_chandef(struct sk_buff *msg,
2166                                  struct cfg80211_chan_def *chandef)
2167 {
2168         WARN_ON(!cfg80211_chandef_valid(chandef));
2169
2170         if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
2171                         chandef->chan->center_freq))
2172                 return -ENOBUFS;
2173         switch (chandef->width) {
2174         case NL80211_CHAN_WIDTH_20_NOHT:
2175         case NL80211_CHAN_WIDTH_20:
2176         case NL80211_CHAN_WIDTH_40:
2177                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
2178                                 cfg80211_get_chandef_type(chandef)))
2179                         return -ENOBUFS;
2180                 break;
2181         default:
2182                 break;
2183         }
2184         if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, chandef->width))
2185                 return -ENOBUFS;
2186         if (nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1, chandef->center_freq1))
2187                 return -ENOBUFS;
2188         if (chandef->center_freq2 &&
2189             nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2, chandef->center_freq2))
2190                 return -ENOBUFS;
2191         return 0;
2192 }
2193
2194 static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags,
2195                               struct cfg80211_registered_device *rdev,
2196                               struct wireless_dev *wdev)
2197 {
2198         struct net_device *dev = wdev->netdev;
2199         void *hdr;
2200
2201         hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_INTERFACE);
2202         if (!hdr)
2203                 return -1;
2204
2205         if (dev &&
2206             (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
2207              nla_put_string(msg, NL80211_ATTR_IFNAME, dev->name)))
2208                 goto nla_put_failure;
2209
2210         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
2211             nla_put_u32(msg, NL80211_ATTR_IFTYPE, wdev->iftype) ||
2212             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
2213             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, wdev_address(wdev)) ||
2214             nla_put_u32(msg, NL80211_ATTR_GENERATION,
2215                         rdev->devlist_generation ^
2216                         (cfg80211_rdev_list_generation << 2)))
2217                 goto nla_put_failure;
2218
2219         if (rdev->ops->get_channel) {
2220                 int ret;
2221                 struct cfg80211_chan_def chandef;
2222
2223                 ret = rdev_get_channel(rdev, wdev, &chandef);
2224                 if (ret == 0) {
2225                         if (nl80211_send_chandef(msg, &chandef))
2226                                 goto nla_put_failure;
2227                 }
2228         }
2229
2230         if (wdev->ssid_len) {
2231                 if (nla_put(msg, NL80211_ATTR_SSID, wdev->ssid_len, wdev->ssid))
2232                         goto nla_put_failure;
2233         }
2234
2235         return genlmsg_end(msg, hdr);
2236
2237  nla_put_failure:
2238         genlmsg_cancel(msg, hdr);
2239         return -EMSGSIZE;
2240 }
2241
2242 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
2243 {
2244         int wp_idx = 0;
2245         int if_idx = 0;
2246         int wp_start = cb->args[0];
2247         int if_start = cb->args[1];
2248         struct cfg80211_registered_device *rdev;
2249         struct wireless_dev *wdev;
2250
2251         rtnl_lock();
2252         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
2253                 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
2254                         continue;
2255                 if (wp_idx < wp_start) {
2256                         wp_idx++;
2257                         continue;
2258                 }
2259                 if_idx = 0;
2260
2261                 list_for_each_entry(wdev, &rdev->wdev_list, list) {
2262                         if (if_idx < if_start) {
2263                                 if_idx++;
2264                                 continue;
2265                         }
2266                         if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).portid,
2267                                                cb->nlh->nlmsg_seq, NLM_F_MULTI,
2268                                                rdev, wdev) < 0) {
2269                                 goto out;
2270                         }
2271                         if_idx++;
2272                 }
2273
2274                 wp_idx++;
2275         }
2276  out:
2277         rtnl_unlock();
2278
2279         cb->args[0] = wp_idx;
2280         cb->args[1] = if_idx;
2281
2282         return skb->len;
2283 }
2284
2285 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
2286 {
2287         struct sk_buff *msg;
2288         struct cfg80211_registered_device *dev = info->user_ptr[0];
2289         struct wireless_dev *wdev = info->user_ptr[1];
2290
2291         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2292         if (!msg)
2293                 return -ENOMEM;
2294
2295         if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
2296                                dev, wdev) < 0) {
2297                 nlmsg_free(msg);
2298                 return -ENOBUFS;
2299         }
2300
2301         return genlmsg_reply(msg, info);
2302 }
2303
2304 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
2305         [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
2306         [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
2307         [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
2308         [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
2309         [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
2310         [NL80211_MNTR_FLAG_ACTIVE] = { .type = NLA_FLAG },
2311 };
2312
2313 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
2314 {
2315         struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
2316         int flag;
2317
2318         *mntrflags = 0;
2319
2320         if (!nla)
2321                 return -EINVAL;
2322
2323         if (nla_parse_nested(flags, NL80211_MNTR_FLAG_MAX,
2324                              nla, mntr_flags_policy))
2325                 return -EINVAL;
2326
2327         for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
2328                 if (flags[flag])
2329                         *mntrflags |= (1<<flag);
2330
2331         return 0;
2332 }
2333
2334 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
2335                                struct net_device *netdev, u8 use_4addr,
2336                                enum nl80211_iftype iftype)
2337 {
2338         if (!use_4addr) {
2339                 if (netdev && (netdev->priv_flags & IFF_BRIDGE_PORT))
2340                         return -EBUSY;
2341                 return 0;
2342         }
2343
2344         switch (iftype) {
2345         case NL80211_IFTYPE_AP_VLAN:
2346                 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
2347                         return 0;
2348                 break;
2349         case NL80211_IFTYPE_STATION:
2350                 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
2351                         return 0;
2352                 break;
2353         default:
2354                 break;
2355         }
2356
2357         return -EOPNOTSUPP;
2358 }
2359
2360 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
2361 {
2362         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2363         struct vif_params params;
2364         int err;
2365         enum nl80211_iftype otype, ntype;
2366         struct net_device *dev = info->user_ptr[1];
2367         u32 _flags, *flags = NULL;
2368         bool change = false;
2369
2370         memset(&params, 0, sizeof(params));
2371
2372         otype = ntype = dev->ieee80211_ptr->iftype;
2373
2374         if (info->attrs[NL80211_ATTR_IFTYPE]) {
2375                 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
2376                 if (otype != ntype)
2377                         change = true;
2378                 if (ntype > NL80211_IFTYPE_MAX)
2379                         return -EINVAL;
2380         }
2381
2382         if (info->attrs[NL80211_ATTR_MESH_ID]) {
2383                 struct wireless_dev *wdev = dev->ieee80211_ptr;
2384
2385                 if (ntype != NL80211_IFTYPE_MESH_POINT)
2386                         return -EINVAL;
2387                 if (netif_running(dev))
2388                         return -EBUSY;
2389
2390                 wdev_lock(wdev);
2391                 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
2392                              IEEE80211_MAX_MESH_ID_LEN);
2393                 wdev->mesh_id_up_len =
2394                         nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
2395                 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
2396                        wdev->mesh_id_up_len);
2397                 wdev_unlock(wdev);
2398         }
2399
2400         if (info->attrs[NL80211_ATTR_4ADDR]) {
2401                 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
2402                 change = true;
2403                 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
2404                 if (err)
2405                         return err;
2406         } else {
2407                 params.use_4addr = -1;
2408         }
2409
2410         if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
2411                 if (ntype != NL80211_IFTYPE_MONITOR)
2412                         return -EINVAL;
2413                 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
2414                                           &_flags);
2415                 if (err)
2416                         return err;
2417
2418                 flags = &_flags;
2419                 change = true;
2420         }
2421
2422         if (flags && (*flags & NL80211_MNTR_FLAG_ACTIVE) &&
2423             !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
2424                 return -EOPNOTSUPP;
2425
2426         if (change)
2427                 err = cfg80211_change_iface(rdev, dev, ntype, flags, &params);
2428         else
2429                 err = 0;
2430
2431         if (!err && params.use_4addr != -1)
2432                 dev->ieee80211_ptr->use_4addr = params.use_4addr;
2433
2434         return err;
2435 }
2436
2437 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
2438 {
2439         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2440         struct vif_params params;
2441         struct wireless_dev *wdev;
2442         struct sk_buff *msg;
2443         int err;
2444         enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
2445         u32 flags;
2446
2447         memset(&params, 0, sizeof(params));
2448
2449         if (!info->attrs[NL80211_ATTR_IFNAME])
2450                 return -EINVAL;
2451
2452         if (info->attrs[NL80211_ATTR_IFTYPE]) {
2453                 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
2454                 if (type > NL80211_IFTYPE_MAX)
2455                         return -EINVAL;
2456         }
2457
2458         if (!rdev->ops->add_virtual_intf ||
2459             !(rdev->wiphy.interface_modes & (1 << type)))
2460                 return -EOPNOTSUPP;
2461
2462         if (type == NL80211_IFTYPE_P2P_DEVICE && info->attrs[NL80211_ATTR_MAC]) {
2463                 nla_memcpy(params.macaddr, info->attrs[NL80211_ATTR_MAC],
2464                            ETH_ALEN);
2465                 if (!is_valid_ether_addr(params.macaddr))
2466                         return -EADDRNOTAVAIL;
2467         }
2468
2469         if (info->attrs[NL80211_ATTR_4ADDR]) {
2470                 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
2471                 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
2472                 if (err)
2473                         return err;
2474         }
2475
2476         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2477         if (!msg)
2478                 return -ENOMEM;
2479
2480         err = parse_monitor_flags(type == NL80211_IFTYPE_MONITOR ?
2481                                   info->attrs[NL80211_ATTR_MNTR_FLAGS] : NULL,
2482                                   &flags);
2483
2484         if (!err && (flags & NL80211_MNTR_FLAG_ACTIVE) &&
2485             !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
2486                 return -EOPNOTSUPP;
2487
2488         wdev = rdev_add_virtual_intf(rdev,
2489                                 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
2490                                 type, err ? NULL : &flags, &params);
2491         if (IS_ERR(wdev)) {
2492                 nlmsg_free(msg);
2493                 return PTR_ERR(wdev);
2494         }
2495
2496         switch (type) {
2497         case NL80211_IFTYPE_MESH_POINT:
2498                 if (!info->attrs[NL80211_ATTR_MESH_ID])
2499                         break;
2500                 wdev_lock(wdev);
2501                 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
2502                              IEEE80211_MAX_MESH_ID_LEN);
2503                 wdev->mesh_id_up_len =
2504                         nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
2505                 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
2506                        wdev->mesh_id_up_len);
2507                 wdev_unlock(wdev);
2508                 break;
2509         case NL80211_IFTYPE_P2P_DEVICE:
2510                 /*
2511                  * P2P Device doesn't have a netdev, so doesn't go
2512                  * through the netdev notifier and must be added here
2513                  */
2514                 mutex_init(&wdev->mtx);
2515                 INIT_LIST_HEAD(&wdev->event_list);
2516                 spin_lock_init(&wdev->event_lock);
2517                 INIT_LIST_HEAD(&wdev->mgmt_registrations);
2518                 spin_lock_init(&wdev->mgmt_registrations_lock);
2519
2520                 wdev->identifier = ++rdev->wdev_id;
2521                 list_add_rcu(&wdev->list, &rdev->wdev_list);
2522                 rdev->devlist_generation++;
2523                 break;
2524         default:
2525                 break;
2526         }
2527
2528         if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
2529                                rdev, wdev) < 0) {
2530                 nlmsg_free(msg);
2531                 return -ENOBUFS;
2532         }
2533
2534         return genlmsg_reply(msg, info);
2535 }
2536
2537 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
2538 {
2539         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2540         struct wireless_dev *wdev = info->user_ptr[1];
2541
2542         if (!rdev->ops->del_virtual_intf)
2543                 return -EOPNOTSUPP;
2544
2545         /*
2546          * If we remove a wireless device without a netdev then clear
2547          * user_ptr[1] so that nl80211_post_doit won't dereference it
2548          * to check if it needs to do dev_put(). Otherwise it crashes
2549          * since the wdev has been freed, unlike with a netdev where
2550          * we need the dev_put() for the netdev to really be freed.
2551          */
2552         if (!wdev->netdev)
2553                 info->user_ptr[1] = NULL;
2554
2555         return rdev_del_virtual_intf(rdev, wdev);
2556 }
2557
2558 static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info)
2559 {
2560         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2561         struct net_device *dev = info->user_ptr[1];
2562         u16 noack_map;
2563
2564         if (!info->attrs[NL80211_ATTR_NOACK_MAP])
2565                 return -EINVAL;
2566
2567         if (!rdev->ops->set_noack_map)
2568                 return -EOPNOTSUPP;
2569
2570         noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]);
2571
2572         return rdev_set_noack_map(rdev, dev, noack_map);
2573 }
2574
2575 struct get_key_cookie {
2576         struct sk_buff *msg;
2577         int error;
2578         int idx;
2579 };
2580
2581 static void get_key_callback(void *c, struct key_params *params)
2582 {
2583         struct nlattr *key;
2584         struct get_key_cookie *cookie = c;
2585
2586         if ((params->key &&
2587              nla_put(cookie->msg, NL80211_ATTR_KEY_DATA,
2588                      params->key_len, params->key)) ||
2589             (params->seq &&
2590              nla_put(cookie->msg, NL80211_ATTR_KEY_SEQ,
2591                      params->seq_len, params->seq)) ||
2592             (params->cipher &&
2593              nla_put_u32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
2594                          params->cipher)))
2595                 goto nla_put_failure;
2596
2597         key = nla_nest_start(cookie->msg, NL80211_ATTR_KEY);
2598         if (!key)
2599                 goto nla_put_failure;
2600
2601         if ((params->key &&
2602              nla_put(cookie->msg, NL80211_KEY_DATA,
2603                      params->key_len, params->key)) ||
2604             (params->seq &&
2605              nla_put(cookie->msg, NL80211_KEY_SEQ,
2606                      params->seq_len, params->seq)) ||
2607             (params->cipher &&
2608              nla_put_u32(cookie->msg, NL80211_KEY_CIPHER,
2609                          params->cipher)))
2610                 goto nla_put_failure;
2611
2612         if (nla_put_u8(cookie->msg, NL80211_ATTR_KEY_IDX, cookie->idx))
2613                 goto nla_put_failure;
2614
2615         nla_nest_end(cookie->msg, key);
2616
2617         return;
2618  nla_put_failure:
2619         cookie->error = 1;
2620 }
2621
2622 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
2623 {
2624         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2625         int err;
2626         struct net_device *dev = info->user_ptr[1];
2627         u8 key_idx = 0;
2628         const u8 *mac_addr = NULL;
2629         bool pairwise;
2630         struct get_key_cookie cookie = {
2631                 .error = 0,
2632         };
2633         void *hdr;
2634         struct sk_buff *msg;
2635
2636         if (info->attrs[NL80211_ATTR_KEY_IDX])
2637                 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
2638
2639         if (key_idx > 5)
2640                 return -EINVAL;
2641
2642         if (info->attrs[NL80211_ATTR_MAC])
2643                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2644
2645         pairwise = !!mac_addr;
2646         if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
2647                 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
2648                 if (kt >= NUM_NL80211_KEYTYPES)
2649                         return -EINVAL;
2650                 if (kt != NL80211_KEYTYPE_GROUP &&
2651                     kt != NL80211_KEYTYPE_PAIRWISE)
2652                         return -EINVAL;
2653                 pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
2654         }
2655
2656         if (!rdev->ops->get_key)
2657                 return -EOPNOTSUPP;
2658
2659         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2660         if (!msg)
2661                 return -ENOMEM;
2662
2663         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
2664                              NL80211_CMD_NEW_KEY);
2665         if (IS_ERR(hdr))
2666                 return PTR_ERR(hdr);
2667
2668         cookie.msg = msg;
2669         cookie.idx = key_idx;
2670
2671         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
2672             nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx))
2673                 goto nla_put_failure;
2674         if (mac_addr &&
2675             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
2676                 goto nla_put_failure;
2677
2678         if (pairwise && mac_addr &&
2679             !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
2680                 return -ENOENT;
2681
2682         err = rdev_get_key(rdev, dev, key_idx, pairwise, mac_addr, &cookie,
2683                            get_key_callback);
2684
2685         if (err)
2686                 goto free_msg;
2687
2688         if (cookie.error)
2689                 goto nla_put_failure;
2690
2691         genlmsg_end(msg, hdr);
2692         return genlmsg_reply(msg, info);
2693
2694  nla_put_failure:
2695         err = -ENOBUFS;
2696  free_msg:
2697         nlmsg_free(msg);
2698         return err;
2699 }
2700
2701 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
2702 {
2703         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2704         struct key_parse key;
2705         int err;
2706         struct net_device *dev = info->user_ptr[1];
2707
2708         err = nl80211_parse_key(info, &key);
2709         if (err)
2710                 return err;
2711
2712         if (key.idx < 0)
2713                 return -EINVAL;
2714
2715         /* only support setting default key */
2716         if (!key.def && !key.defmgmt)
2717                 return -EINVAL;
2718
2719         wdev_lock(dev->ieee80211_ptr);
2720
2721         if (key.def) {
2722                 if (!rdev->ops->set_default_key) {
2723                         err = -EOPNOTSUPP;
2724                         goto out;
2725                 }
2726
2727                 err = nl80211_key_allowed(dev->ieee80211_ptr);
2728                 if (err)
2729                         goto out;
2730
2731                 err = rdev_set_default_key(rdev, dev, key.idx,
2732                                                  key.def_uni, key.def_multi);
2733
2734                 if (err)
2735                         goto out;
2736
2737 #ifdef CONFIG_CFG80211_WEXT
2738                 dev->ieee80211_ptr->wext.default_key = key.idx;
2739 #endif
2740         } else {
2741                 if (key.def_uni || !key.def_multi) {
2742                         err = -EINVAL;
2743                         goto out;
2744                 }
2745
2746                 if (!rdev->ops->set_default_mgmt_key) {
2747                         err = -EOPNOTSUPP;
2748                         goto out;
2749                 }
2750
2751                 err = nl80211_key_allowed(dev->ieee80211_ptr);
2752                 if (err)
2753                         goto out;
2754
2755                 err = rdev_set_default_mgmt_key(rdev, dev, key.idx);
2756                 if (err)
2757                         goto out;
2758
2759 #ifdef CONFIG_CFG80211_WEXT
2760                 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx;
2761 #endif
2762         }
2763
2764  out:
2765         wdev_unlock(dev->ieee80211_ptr);
2766
2767         return err;
2768 }
2769
2770 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
2771 {
2772         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2773         int err;
2774         struct net_device *dev = info->user_ptr[1];
2775         struct key_parse key;
2776         const u8 *mac_addr = NULL;
2777
2778         err = nl80211_parse_key(info, &key);
2779         if (err)
2780                 return err;
2781
2782         if (!key.p.key)
2783                 return -EINVAL;
2784
2785         if (info->attrs[NL80211_ATTR_MAC])
2786                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2787
2788         if (key.type == -1) {
2789                 if (mac_addr)
2790                         key.type = NL80211_KEYTYPE_PAIRWISE;
2791                 else
2792                         key.type = NL80211_KEYTYPE_GROUP;
2793         }
2794
2795         /* for now */
2796         if (key.type != NL80211_KEYTYPE_PAIRWISE &&
2797             key.type != NL80211_KEYTYPE_GROUP)
2798                 return -EINVAL;
2799
2800         if (!rdev->ops->add_key)
2801                 return -EOPNOTSUPP;
2802
2803         if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
2804                                            key.type == NL80211_KEYTYPE_PAIRWISE,
2805                                            mac_addr))
2806                 return -EINVAL;
2807
2808         wdev_lock(dev->ieee80211_ptr);
2809         err = nl80211_key_allowed(dev->ieee80211_ptr);
2810         if (!err)
2811                 err = rdev_add_key(rdev, dev, key.idx,
2812                                    key.type == NL80211_KEYTYPE_PAIRWISE,
2813                                     mac_addr, &key.p);
2814         wdev_unlock(dev->ieee80211_ptr);
2815
2816         return err;
2817 }
2818
2819 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
2820 {
2821         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2822         int err;
2823         struct net_device *dev = info->user_ptr[1];
2824         u8 *mac_addr = NULL;
2825         struct key_parse key;
2826
2827         err = nl80211_parse_key(info, &key);
2828         if (err)
2829                 return err;
2830
2831         if (info->attrs[NL80211_ATTR_MAC])
2832                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2833
2834         if (key.type == -1) {
2835                 if (mac_addr)
2836                         key.type = NL80211_KEYTYPE_PAIRWISE;
2837                 else
2838                         key.type = NL80211_KEYTYPE_GROUP;
2839         }
2840
2841         /* for now */
2842         if (key.type != NL80211_KEYTYPE_PAIRWISE &&
2843             key.type != NL80211_KEYTYPE_GROUP)
2844                 return -EINVAL;
2845
2846         if (!rdev->ops->del_key)
2847                 return -EOPNOTSUPP;
2848
2849         wdev_lock(dev->ieee80211_ptr);
2850         err = nl80211_key_allowed(dev->ieee80211_ptr);
2851
2852         if (key.type == NL80211_KEYTYPE_PAIRWISE && mac_addr &&
2853             !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
2854                 err = -ENOENT;
2855
2856         if (!err)
2857                 err = rdev_del_key(rdev, dev, key.idx,
2858                                    key.type == NL80211_KEYTYPE_PAIRWISE,
2859                                    mac_addr);
2860
2861 #ifdef CONFIG_CFG80211_WEXT
2862         if (!err) {
2863                 if (key.idx == dev->ieee80211_ptr->wext.default_key)
2864                         dev->ieee80211_ptr->wext.default_key = -1;
2865                 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key)
2866                         dev->ieee80211_ptr->wext.default_mgmt_key = -1;
2867         }
2868 #endif
2869         wdev_unlock(dev->ieee80211_ptr);
2870
2871         return err;
2872 }
2873
2874 /* This function returns an error or the number of nested attributes */
2875 static int validate_acl_mac_addrs(struct nlattr *nl_attr)
2876 {
2877         struct nlattr *attr;
2878         int n_entries = 0, tmp;
2879
2880         nla_for_each_nested(attr, nl_attr, tmp) {
2881                 if (nla_len(attr) != ETH_ALEN)
2882                         return -EINVAL;
2883
2884                 n_entries++;
2885         }
2886
2887         return n_entries;
2888 }
2889
2890 /*
2891  * This function parses ACL information and allocates memory for ACL data.
2892  * On successful return, the calling function is responsible to free the
2893  * ACL buffer returned by this function.
2894  */
2895 static struct cfg80211_acl_data *parse_acl_data(struct wiphy *wiphy,
2896                                                 struct genl_info *info)
2897 {
2898         enum nl80211_acl_policy acl_policy;
2899         struct nlattr *attr;
2900         struct cfg80211_acl_data *acl;
2901         int i = 0, n_entries, tmp;
2902
2903         if (!wiphy->max_acl_mac_addrs)
2904                 return ERR_PTR(-EOPNOTSUPP);
2905
2906         if (!info->attrs[NL80211_ATTR_ACL_POLICY])
2907                 return ERR_PTR(-EINVAL);
2908
2909         acl_policy = nla_get_u32(info->attrs[NL80211_ATTR_ACL_POLICY]);
2910         if (acl_policy != NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED &&
2911             acl_policy != NL80211_ACL_POLICY_DENY_UNLESS_LISTED)
2912                 return ERR_PTR(-EINVAL);
2913
2914         if (!info->attrs[NL80211_ATTR_MAC_ADDRS])
2915                 return ERR_PTR(-EINVAL);
2916
2917         n_entries = validate_acl_mac_addrs(info->attrs[NL80211_ATTR_MAC_ADDRS]);
2918         if (n_entries < 0)
2919                 return ERR_PTR(n_entries);
2920
2921         if (n_entries > wiphy->max_acl_mac_addrs)
2922                 return ERR_PTR(-ENOTSUPP);
2923
2924         acl = kzalloc(sizeof(*acl) + (sizeof(struct mac_address) * n_entries),
2925                       GFP_KERNEL);
2926         if (!acl)
2927                 return ERR_PTR(-ENOMEM);
2928
2929         nla_for_each_nested(attr, info->attrs[NL80211_ATTR_MAC_ADDRS], tmp) {
2930                 memcpy(acl->mac_addrs[i].addr, nla_data(attr), ETH_ALEN);
2931                 i++;
2932         }
2933
2934         acl->n_acl_entries = n_entries;
2935         acl->acl_policy = acl_policy;
2936
2937         return acl;
2938 }
2939
2940 static int nl80211_set_mac_acl(struct sk_buff *skb, struct genl_info *info)
2941 {
2942         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2943         struct net_device *dev = info->user_ptr[1];
2944         struct cfg80211_acl_data *acl;
2945         int err;
2946
2947         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2948             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2949                 return -EOPNOTSUPP;
2950
2951         if (!dev->ieee80211_ptr->beacon_interval)
2952                 return -EINVAL;
2953
2954         acl = parse_acl_data(&rdev->wiphy, info);
2955         if (IS_ERR(acl))
2956                 return PTR_ERR(acl);
2957
2958         err = rdev_set_mac_acl(rdev, dev, acl);
2959
2960         kfree(acl);
2961
2962         return err;
2963 }
2964
2965 static int nl80211_parse_beacon(struct nlattr *attrs[],
2966                                 struct cfg80211_beacon_data *bcn)
2967 {
2968         bool haveinfo = false;
2969
2970         if (!is_valid_ie_attr(attrs[NL80211_ATTR_BEACON_TAIL]) ||
2971             !is_valid_ie_attr(attrs[NL80211_ATTR_IE]) ||
2972             !is_valid_ie_attr(attrs[NL80211_ATTR_IE_PROBE_RESP]) ||
2973             !is_valid_ie_attr(attrs[NL80211_ATTR_IE_ASSOC_RESP]))
2974                 return -EINVAL;
2975
2976         memset(bcn, 0, sizeof(*bcn));
2977
2978         if (attrs[NL80211_ATTR_BEACON_HEAD]) {
2979                 bcn->head = nla_data(attrs[NL80211_ATTR_BEACON_HEAD]);
2980                 bcn->head_len = nla_len(attrs[NL80211_ATTR_BEACON_HEAD]);
2981                 if (!bcn->head_len)
2982                         return -EINVAL;
2983                 haveinfo = true;
2984         }
2985
2986         if (attrs[NL80211_ATTR_BEACON_TAIL]) {
2987                 bcn->tail = nla_data(attrs[NL80211_ATTR_BEACON_TAIL]);
2988                 bcn->tail_len = nla_len(attrs[NL80211_ATTR_BEACON_TAIL]);
2989                 haveinfo = true;
2990         }
2991
2992         if (!haveinfo)
2993                 return -EINVAL;
2994
2995         if (attrs[NL80211_ATTR_IE]) {
2996                 bcn->beacon_ies = nla_data(attrs[NL80211_ATTR_IE]);
2997                 bcn->beacon_ies_len = nla_len(attrs[NL80211_ATTR_IE]);
2998         }
2999
3000         if (attrs[NL80211_ATTR_IE_PROBE_RESP]) {
3001                 bcn->proberesp_ies =
3002                         nla_data(attrs[NL80211_ATTR_IE_PROBE_RESP]);
3003                 bcn->proberesp_ies_len =
3004                         nla_len(attrs[NL80211_ATTR_IE_PROBE_RESP]);
3005         }
3006
3007         if (attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
3008                 bcn->assocresp_ies =
3009                         nla_data(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
3010                 bcn->assocresp_ies_len =
3011                         nla_len(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
3012         }
3013
3014         if (attrs[NL80211_ATTR_PROBE_RESP]) {
3015                 bcn->probe_resp = nla_data(attrs[NL80211_ATTR_PROBE_RESP]);
3016                 bcn->probe_resp_len = nla_len(attrs[NL80211_ATTR_PROBE_RESP]);
3017         }
3018
3019         return 0;
3020 }
3021
3022 static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev,
3023                                    struct cfg80211_ap_settings *params)
3024 {
3025         struct wireless_dev *wdev;
3026         bool ret = false;
3027
3028         list_for_each_entry(wdev, &rdev->wdev_list, list) {
3029                 if (wdev->iftype != NL80211_IFTYPE_AP &&
3030                     wdev->iftype != NL80211_IFTYPE_P2P_GO)
3031                         continue;
3032
3033                 if (!wdev->preset_chandef.chan)
3034                         continue;
3035
3036                 params->chandef = wdev->preset_chandef;
3037                 ret = true;
3038                 break;
3039         }
3040
3041         return ret;
3042 }
3043
3044 static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev,
3045                                     enum nl80211_auth_type auth_type,
3046                                     enum nl80211_commands cmd)
3047 {
3048         if (auth_type > NL80211_AUTHTYPE_MAX)
3049                 return false;
3050
3051         switch (cmd) {
3052         case NL80211_CMD_AUTHENTICATE:
3053                 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
3054                     auth_type == NL80211_AUTHTYPE_SAE)
3055                         return false;
3056                 return true;
3057         case NL80211_CMD_CONNECT:
3058         case NL80211_CMD_START_AP:
3059                 /* SAE not supported yet */
3060                 if (auth_type == NL80211_AUTHTYPE_SAE)
3061                         return false;
3062                 return true;
3063         default:
3064                 return false;
3065         }
3066 }
3067
3068 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
3069 {
3070         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3071         struct net_device *dev = info->user_ptr[1];
3072         struct wireless_dev *wdev = dev->ieee80211_ptr;
3073         struct cfg80211_ap_settings params;
3074         int err;
3075         u8 radar_detect_width = 0;
3076
3077         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3078             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3079                 return -EOPNOTSUPP;
3080
3081         if (!rdev->ops->start_ap)
3082                 return -EOPNOTSUPP;
3083
3084         if (wdev->beacon_interval)
3085                 return -EALREADY;
3086
3087         memset(&params, 0, sizeof(params));
3088
3089         /* these are required for START_AP */
3090         if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
3091             !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
3092             !info->attrs[NL80211_ATTR_BEACON_HEAD])
3093                 return -EINVAL;
3094
3095         err = nl80211_parse_beacon(info->attrs, &params.beacon);
3096         if (err)
3097                 return err;
3098
3099         params.beacon_interval =
3100                 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
3101         params.dtim_period =
3102                 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
3103
3104         err = cfg80211_validate_beacon_int(rdev, params.beacon_interval);
3105         if (err)
3106                 return err;
3107
3108         /*
3109          * In theory, some of these attributes should be required here
3110          * but since they were not used when the command was originally
3111          * added, keep them optional for old user space programs to let
3112          * them continue to work with drivers that do not need the
3113          * additional information -- drivers must check!
3114          */
3115         if (info->attrs[NL80211_ATTR_SSID]) {
3116                 params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
3117                 params.ssid_len =
3118                         nla_len(info->attrs[NL80211_ATTR_SSID]);
3119                 if (params.ssid_len == 0 ||
3120                     params.ssid_len > IEEE80211_MAX_SSID_LEN)
3121                         return -EINVAL;
3122         }
3123
3124         if (info->attrs[NL80211_ATTR_HIDDEN_SSID]) {
3125                 params.hidden_ssid = nla_get_u32(
3126                         info->attrs[NL80211_ATTR_HIDDEN_SSID]);
3127                 if (params.hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE &&
3128                     params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_LEN &&
3129                     params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_CONTENTS)
3130                         return -EINVAL;
3131         }
3132
3133         params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
3134
3135         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
3136                 params.auth_type = nla_get_u32(
3137                         info->attrs[NL80211_ATTR_AUTH_TYPE]);
3138                 if (!nl80211_valid_auth_type(rdev, params.auth_type,
3139                                              NL80211_CMD_START_AP))
3140                         return -EINVAL;
3141         } else
3142                 params.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
3143
3144         err = nl80211_crypto_settings(rdev, info, &params.crypto,
3145                                       NL80211_MAX_NR_CIPHER_SUITES);
3146         if (err)
3147                 return err;
3148
3149         if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) {
3150                 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER))
3151                         return -EOPNOTSUPP;
3152                 params.inactivity_timeout = nla_get_u16(
3153                         info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]);
3154         }
3155
3156         if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
3157                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3158                         return -EINVAL;
3159                 params.p2p_ctwindow =
3160                         nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
3161                 if (params.p2p_ctwindow > 127)
3162                         return -EINVAL;
3163                 if (params.p2p_ctwindow != 0 &&
3164                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
3165                         return -EINVAL;
3166         }
3167
3168         if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
3169                 u8 tmp;
3170
3171                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3172                         return -EINVAL;
3173                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
3174                 if (tmp > 1)
3175                         return -EINVAL;
3176                 params.p2p_opp_ps = tmp;
3177                 if (params.p2p_opp_ps != 0 &&
3178                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
3179                         return -EINVAL;
3180         }
3181
3182         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
3183                 err = nl80211_parse_chandef(rdev, info, &params.chandef);
3184                 if (err)
3185                         return err;
3186         } else if (wdev->preset_chandef.chan) {
3187                 params.chandef = wdev->preset_chandef;
3188         } else if (!nl80211_get_ap_channel(rdev, &params))
3189                 return -EINVAL;
3190
3191         if (!cfg80211_reg_can_beacon(&rdev->wiphy, &params.chandef))
3192                 return -EINVAL;
3193
3194         err = cfg80211_chandef_dfs_required(wdev->wiphy, &params.chandef);
3195         if (err < 0)
3196                 return err;
3197         if (err) {
3198                 radar_detect_width = BIT(params.chandef.width);
3199                 params.radar_required = true;
3200         }
3201
3202         err = cfg80211_can_use_iftype_chan(rdev, wdev, wdev->iftype,
3203                                            params.chandef.chan,
3204                                            CHAN_MODE_SHARED,
3205                                            radar_detect_width);
3206         if (err)
3207                 return err;
3208
3209         if (info->attrs[NL80211_ATTR_ACL_POLICY]) {
3210                 params.acl = parse_acl_data(&rdev->wiphy, info);
3211                 if (IS_ERR(params.acl))
3212                         return PTR_ERR(params.acl);
3213         }
3214
3215         err = rdev_start_ap(rdev, dev, &params);
3216         if (!err) {
3217                 wdev->preset_chandef = params.chandef;
3218                 wdev->beacon_interval = params.beacon_interval;
3219                 wdev->channel = params.chandef.chan;
3220                 wdev->ssid_len = params.ssid_len;
3221                 memcpy(wdev->ssid, params.ssid, wdev->ssid_len);
3222         }
3223
3224         kfree(params.acl);
3225
3226         return err;
3227 }
3228
3229 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info)
3230 {
3231         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3232         struct net_device *dev = info->user_ptr[1];
3233         struct wireless_dev *wdev = dev->ieee80211_ptr;
3234         struct cfg80211_beacon_data params;
3235         int err;
3236
3237         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3238             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3239                 return -EOPNOTSUPP;
3240
3241         if (!rdev->ops->change_beacon)
3242                 return -EOPNOTSUPP;
3243
3244         if (!wdev->beacon_interval)
3245                 return -EINVAL;
3246
3247         err = nl80211_parse_beacon(info->attrs, &params);
3248         if (err)
3249                 return err;
3250
3251         return rdev_change_beacon(rdev, dev, &params);
3252 }
3253
3254 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info)
3255 {
3256         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3257         struct net_device *dev = info->user_ptr[1];
3258
3259         return cfg80211_stop_ap(rdev, dev);
3260 }
3261
3262 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
3263         [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
3264         [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
3265         [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
3266         [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
3267         [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
3268         [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG },
3269 };
3270
3271 static int parse_station_flags(struct genl_info *info,
3272                                enum nl80211_iftype iftype,
3273                                struct station_parameters *params)
3274 {
3275         struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
3276         struct nlattr *nla;
3277         int flag;
3278
3279         /*
3280          * Try parsing the new attribute first so userspace
3281          * can specify both for older kernels.
3282          */
3283         nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
3284         if (nla) {
3285                 struct nl80211_sta_flag_update *sta_flags;
3286
3287                 sta_flags = nla_data(nla);
3288                 params->sta_flags_mask = sta_flags->mask;
3289                 params->sta_flags_set = sta_flags->set;
3290                 params->sta_flags_set &= params->sta_flags_mask;
3291                 if ((params->sta_flags_mask |
3292                      params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
3293                         return -EINVAL;
3294                 return 0;
3295         }
3296
3297         /* if present, parse the old attribute */
3298
3299         nla = info->attrs[NL80211_ATTR_STA_FLAGS];
3300         if (!nla)
3301                 return 0;
3302
3303         if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX,
3304                              nla, sta_flags_policy))
3305                 return -EINVAL;
3306
3307         /*
3308          * Only allow certain flags for interface types so that
3309          * other attributes are silently ignored. Remember that
3310          * this is backward compatibility code with old userspace
3311          * and shouldn't be hit in other cases anyway.
3312          */
3313         switch (iftype) {
3314         case NL80211_IFTYPE_AP:
3315         case NL80211_IFTYPE_AP_VLAN:
3316         case NL80211_IFTYPE_P2P_GO:
3317                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
3318                                          BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
3319                                          BIT(NL80211_STA_FLAG_WME) |
3320                                          BIT(NL80211_STA_FLAG_MFP);
3321                 break;
3322         case NL80211_IFTYPE_P2P_CLIENT:
3323         case NL80211_IFTYPE_STATION:
3324                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
3325                                          BIT(NL80211_STA_FLAG_TDLS_PEER);
3326                 break;
3327         case NL80211_IFTYPE_MESH_POINT:
3328                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3329                                          BIT(NL80211_STA_FLAG_MFP) |
3330                                          BIT(NL80211_STA_FLAG_AUTHORIZED);
3331         default:
3332                 return -EINVAL;
3333         }
3334
3335         for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) {
3336                 if (flags[flag]) {
3337                         params->sta_flags_set |= (1<<flag);
3338
3339                         /* no longer support new API additions in old API */
3340                         if (flag > NL80211_STA_FLAG_MAX_OLD_API)
3341                                 return -EINVAL;
3342                 }
3343         }
3344
3345         return 0;
3346 }
3347
3348 static bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info,
3349                                  int attr)
3350 {
3351         struct nlattr *rate;
3352         u32 bitrate;
3353         u16 bitrate_compat;
3354
3355         rate = nla_nest_start(msg, attr);
3356         if (!rate)
3357                 return false;
3358
3359         /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
3360         bitrate = cfg80211_calculate_bitrate(info);
3361         /* report 16-bit bitrate only if we can */
3362         bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0;
3363         if (bitrate > 0 &&
3364             nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate))
3365                 return false;
3366         if (bitrate_compat > 0 &&
3367             nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat))
3368                 return false;
3369
3370         if (info->flags & RATE_INFO_FLAGS_MCS) {
3371                 if (nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs))
3372                         return false;
3373                 if (info->flags & RATE_INFO_FLAGS_40_MHZ_WIDTH &&
3374                     nla_put_flag(msg, NL80211_RATE_INFO_40_MHZ_WIDTH))
3375                         return false;
3376                 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
3377                     nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
3378                         return false;
3379         } else if (info->flags & RATE_INFO_FLAGS_VHT_MCS) {
3380                 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_MCS, info->mcs))
3381                         return false;
3382                 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_NSS, info->nss))
3383                         return false;
3384                 if (info->flags & RATE_INFO_FLAGS_40_MHZ_WIDTH &&
3385                     nla_put_flag(msg, NL80211_RATE_INFO_40_MHZ_WIDTH))
3386                         return false;
3387                 if (info->flags & RATE_INFO_FLAGS_80_MHZ_WIDTH &&
3388                     nla_put_flag(msg, NL80211_RATE_INFO_80_MHZ_WIDTH))
3389                         return false;
3390                 if (info->flags & RATE_INFO_FLAGS_80P80_MHZ_WIDTH &&
3391                     nla_put_flag(msg, NL80211_RATE_INFO_80P80_MHZ_WIDTH))
3392                         return false;
3393                 if (info->flags & RATE_INFO_FLAGS_160_MHZ_WIDTH &&
3394                     nla_put_flag(msg, NL80211_RATE_INFO_160_MHZ_WIDTH))
3395                         return false;
3396                 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
3397                     nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
3398                         return false;
3399         }
3400
3401         nla_nest_end(msg, rate);
3402         return true;
3403 }
3404
3405 static bool nl80211_put_signal(struct sk_buff *msg, u8 mask, s8 *signal,
3406                                int id)
3407 {
3408         void *attr;
3409         int i = 0;
3410
3411         if (!mask)
3412                 return true;
3413
3414         attr = nla_nest_start(msg, id);
3415         if (!attr)
3416                 return false;
3417
3418         for (i = 0; i < IEEE80211_MAX_CHAINS; i++) {
3419                 if (!(mask & BIT(i)))
3420                         continue;
3421
3422                 if (nla_put_u8(msg, i, signal[i]))
3423                         return false;
3424         }
3425
3426         nla_nest_end(msg, attr);
3427
3428         return true;
3429 }
3430
3431 static int nl80211_send_station(struct sk_buff *msg, u32 portid, u32 seq,
3432                                 int flags,
3433                                 struct cfg80211_registered_device *rdev,
3434                                 struct net_device *dev,
3435                                 const u8 *mac_addr, struct station_info *sinfo)
3436 {
3437         void *hdr;
3438         struct nlattr *sinfoattr, *bss_param;
3439
3440         hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_STATION);
3441         if (!hdr)
3442                 return -1;
3443
3444         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3445             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
3446             nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation))
3447                 goto nla_put_failure;
3448
3449         sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO);
3450         if (!sinfoattr)
3451                 goto nla_put_failure;
3452         if ((sinfo->filled & STATION_INFO_CONNECTED_TIME) &&
3453             nla_put_u32(msg, NL80211_STA_INFO_CONNECTED_TIME,
3454                         sinfo->connected_time))
3455                 goto nla_put_failure;
3456         if ((sinfo->filled & STATION_INFO_INACTIVE_TIME) &&
3457             nla_put_u32(msg, NL80211_STA_INFO_INACTIVE_TIME,
3458                         sinfo->inactive_time))
3459                 goto nla_put_failure;
3460         if ((sinfo->filled & (STATION_INFO_RX_BYTES |
3461                               STATION_INFO_RX_BYTES64)) &&
3462             nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES,
3463                         (u32)sinfo->rx_bytes))
3464                 goto nla_put_failure;
3465         if ((sinfo->filled & (STATION_INFO_TX_BYTES |
3466                               STATION_INFO_TX_BYTES64)) &&
3467             nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES,
3468                         (u32)sinfo->tx_bytes))
3469                 goto nla_put_failure;
3470         if ((sinfo->filled & STATION_INFO_RX_BYTES64) &&
3471             nla_put_u64(msg, NL80211_STA_INFO_RX_BYTES64,
3472                         sinfo->rx_bytes))
3473                 goto nla_put_failure;
3474         if ((sinfo->filled & STATION_INFO_TX_BYTES64) &&
3475             nla_put_u64(msg, NL80211_STA_INFO_TX_BYTES64,
3476                         sinfo->tx_bytes))
3477                 goto nla_put_failure;
3478         if ((sinfo->filled & STATION_INFO_LLID) &&
3479             nla_put_u16(msg, NL80211_STA_INFO_LLID, sinfo->llid))
3480                 goto nla_put_failure;
3481         if ((sinfo->filled & STATION_INFO_PLID) &&
3482             nla_put_u16(msg, NL80211_STA_INFO_PLID, sinfo->plid))
3483                 goto nla_put_failure;
3484         if ((sinfo->filled & STATION_INFO_PLINK_STATE) &&
3485             nla_put_u8(msg, NL80211_STA_INFO_PLINK_STATE,
3486                        sinfo->plink_state))
3487                 goto nla_put_failure;
3488         switch (rdev->wiphy.signal_type) {
3489         case CFG80211_SIGNAL_TYPE_MBM:
3490                 if ((sinfo->filled & STATION_INFO_SIGNAL) &&
3491                     nla_put_u8(msg, NL80211_STA_INFO_SIGNAL,
3492                                sinfo->signal))
3493                         goto nla_put_failure;
3494                 if ((sinfo->filled & STATION_INFO_SIGNAL_AVG) &&
3495                     nla_put_u8(msg, NL80211_STA_INFO_SIGNAL_AVG,
3496                                sinfo->signal_avg))
3497                         goto nla_put_failure;
3498                 break;
3499         default:
3500                 break;
3501         }
3502         if (sinfo->filled & STATION_INFO_CHAIN_SIGNAL) {
3503                 if (!nl80211_put_signal(msg, sinfo->chains,
3504                                         sinfo->chain_signal,
3505                                         NL80211_STA_INFO_CHAIN_SIGNAL))
3506                         goto nla_put_failure;
3507         }
3508         if (sinfo->filled & STATION_INFO_CHAIN_SIGNAL_AVG) {
3509                 if (!nl80211_put_signal(msg, sinfo->chains,
3510                                         sinfo->chain_signal_avg,
3511                                         NL80211_STA_INFO_CHAIN_SIGNAL_AVG))
3512                         goto nla_put_failure;
3513         }
3514         if (sinfo->filled & STATION_INFO_TX_BITRATE) {
3515                 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
3516                                           NL80211_STA_INFO_TX_BITRATE))
3517                         goto nla_put_failure;
3518         }
3519         if (sinfo->filled & STATION_INFO_RX_BITRATE) {
3520                 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
3521                                           NL80211_STA_INFO_RX_BITRATE))
3522                         goto nla_put_failure;
3523         }
3524         if ((sinfo->filled & STATION_INFO_RX_PACKETS) &&
3525             nla_put_u32(msg, NL80211_STA_INFO_RX_PACKETS,
3526                         sinfo->rx_packets))
3527                 goto nla_put_failure;
3528         if ((sinfo->filled & STATION_INFO_TX_PACKETS) &&
3529             nla_put_u32(msg, NL80211_STA_INFO_TX_PACKETS,
3530                         sinfo->tx_packets))
3531                 goto nla_put_failure;
3532         if ((sinfo->filled & STATION_INFO_TX_RETRIES) &&
3533             nla_put_u32(msg, NL80211_STA_INFO_TX_RETRIES,
3534                         sinfo->tx_retries))
3535                 goto nla_put_failure;
3536         if ((sinfo->filled & STATION_INFO_TX_FAILED) &&
3537             nla_put_u32(msg, NL80211_STA_INFO_TX_FAILED,
3538                         sinfo->tx_failed))
3539                 goto nla_put_failure;
3540         if ((sinfo->filled & STATION_INFO_BEACON_LOSS_COUNT) &&
3541             nla_put_u32(msg, NL80211_STA_INFO_BEACON_LOSS,
3542                         sinfo->beacon_loss_count))
3543                 goto nla_put_failure;
3544         if ((sinfo->filled & STATION_INFO_LOCAL_PM) &&
3545             nla_put_u32(msg, NL80211_STA_INFO_LOCAL_PM,
3546                         sinfo->local_pm))
3547                 goto nla_put_failure;
3548         if ((sinfo->filled & STATION_INFO_PEER_PM) &&
3549             nla_put_u32(msg, NL80211_STA_INFO_PEER_PM,
3550                         sinfo->peer_pm))
3551                 goto nla_put_failure;
3552         if ((sinfo->filled & STATION_INFO_NONPEER_PM) &&
3553             nla_put_u32(msg, NL80211_STA_INFO_NONPEER_PM,
3554                         sinfo->nonpeer_pm))
3555                 goto nla_put_failure;
3556         if (sinfo->filled & STATION_INFO_BSS_PARAM) {
3557                 bss_param = nla_nest_start(msg, NL80211_STA_INFO_BSS_PARAM);
3558                 if (!bss_param)
3559                         goto nla_put_failure;
3560
3561                 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) &&
3562                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) ||
3563                     ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) &&
3564                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) ||
3565                     ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) &&
3566                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) ||
3567                     nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
3568                                sinfo->bss_param.dtim_period) ||
3569                     nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
3570                                 sinfo->bss_param.beacon_interval))
3571                         goto nla_put_failure;
3572
3573                 nla_nest_end(msg, bss_param);
3574         }
3575         if ((sinfo->filled & STATION_INFO_STA_FLAGS) &&
3576             nla_put(msg, NL80211_STA_INFO_STA_FLAGS,
3577                     sizeof(struct nl80211_sta_flag_update),
3578                     &sinfo->sta_flags))
3579                 goto nla_put_failure;
3580         if ((sinfo->filled & STATION_INFO_T_OFFSET) &&
3581                 nla_put_u64(msg, NL80211_STA_INFO_T_OFFSET,
3582                             sinfo->t_offset))
3583                 goto nla_put_failure;
3584         nla_nest_end(msg, sinfoattr);
3585
3586         if ((sinfo->filled & STATION_INFO_ASSOC_REQ_IES) &&
3587             nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
3588                     sinfo->assoc_req_ies))
3589                 goto nla_put_failure;
3590
3591         return genlmsg_end(msg, hdr);
3592
3593  nla_put_failure:
3594         genlmsg_cancel(msg, hdr);
3595         return -EMSGSIZE;
3596 }
3597
3598 static int nl80211_dump_station(struct sk_buff *skb,
3599                                 struct netlink_callback *cb)
3600 {
3601         struct station_info sinfo;
3602         struct cfg80211_registered_device *dev;
3603         struct wireless_dev *wdev;
3604         u8 mac_addr[ETH_ALEN];
3605         int sta_idx = cb->args[2];
3606         int err;
3607
3608         err = nl80211_prepare_wdev_dump(skb, cb, &dev, &wdev);
3609         if (err)
3610                 return err;
3611
3612         if (!wdev->netdev) {
3613                 err = -EINVAL;
3614                 goto out_err;
3615         }
3616
3617         if (!dev->ops->dump_station) {
3618                 err = -EOPNOTSUPP;
3619                 goto out_err;
3620         }
3621
3622         while (1) {
3623                 memset(&sinfo, 0, sizeof(sinfo));
3624                 err = rdev_dump_station(dev, wdev->netdev, sta_idx,
3625                                         mac_addr, &sinfo);
3626                 if (err == -ENOENT)
3627                         break;
3628                 if (err)
3629                         goto out_err;
3630
3631                 if (nl80211_send_station(skb,
3632                                 NETLINK_CB(cb->skb).portid,
3633                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
3634                                 dev, wdev->netdev, mac_addr,
3635                                 &sinfo) < 0)
3636                         goto out;
3637
3638                 sta_idx++;
3639         }
3640
3641
3642  out:
3643         cb->args[2] = sta_idx;
3644         err = skb->len;
3645  out_err:
3646         nl80211_finish_wdev_dump(dev);
3647
3648         return err;
3649 }
3650
3651 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
3652 {
3653         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3654         struct net_device *dev = info->user_ptr[1];
3655         struct station_info sinfo;
3656         struct sk_buff *msg;
3657         u8 *mac_addr = NULL;
3658         int err;
3659
3660         memset(&sinfo, 0, sizeof(sinfo));
3661
3662         if (!info->attrs[NL80211_ATTR_MAC])
3663                 return -EINVAL;
3664
3665         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3666
3667         if (!rdev->ops->get_station)
3668                 return -EOPNOTSUPP;
3669
3670         err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
3671         if (err)
3672                 return err;
3673
3674         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3675         if (!msg)
3676                 return -ENOMEM;
3677
3678         if (nl80211_send_station(msg, info->snd_portid, info->snd_seq, 0,
3679                                  rdev, dev, mac_addr, &sinfo) < 0) {
3680                 nlmsg_free(msg);
3681                 return -ENOBUFS;
3682         }
3683
3684         return genlmsg_reply(msg, info);
3685 }
3686
3687 int cfg80211_check_station_change(struct wiphy *wiphy,
3688                                   struct station_parameters *params,
3689                                   enum cfg80211_station_type statype)
3690 {
3691         if (params->listen_interval != -1)
3692                 return -EINVAL;
3693         if (params->aid)
3694                 return -EINVAL;
3695
3696         /* When you run into this, adjust the code below for the new flag */
3697         BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
3698
3699         switch (statype) {
3700         case CFG80211_STA_MESH_PEER_KERNEL:
3701         case CFG80211_STA_MESH_PEER_USER:
3702                 /*
3703                  * No ignoring the TDLS flag here -- the userspace mesh
3704                  * code doesn't have the bug of including TDLS in the
3705                  * mask everywhere.
3706                  */
3707                 if (params->sta_flags_mask &
3708                                 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3709                                   BIT(NL80211_STA_FLAG_MFP) |
3710                                   BIT(NL80211_STA_FLAG_AUTHORIZED)))
3711                         return -EINVAL;
3712                 break;
3713         case CFG80211_STA_TDLS_PEER_SETUP:
3714         case CFG80211_STA_TDLS_PEER_ACTIVE:
3715                 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
3716                         return -EINVAL;
3717                 /* ignore since it can't change */
3718                 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
3719                 break;
3720         default:
3721                 /* disallow mesh-specific things */
3722                 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
3723                         return -EINVAL;
3724                 if (params->local_pm)
3725                         return -EINVAL;
3726                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
3727                         return -EINVAL;
3728         }
3729
3730         if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
3731             statype != CFG80211_STA_TDLS_PEER_ACTIVE) {
3732                 /* TDLS can't be set, ... */
3733                 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
3734                         return -EINVAL;
3735                 /*
3736                  * ... but don't bother the driver with it. This works around
3737                  * a hostapd/wpa_supplicant issue -- it always includes the
3738                  * TLDS_PEER flag in the mask even for AP mode.
3739                  */
3740                 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
3741         }
3742
3743         if (statype != CFG80211_STA_TDLS_PEER_SETUP) {
3744                 /* reject other things that can't change */
3745                 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD)
3746                         return -EINVAL;
3747                 if (params->sta_modify_mask & STATION_PARAM_APPLY_CAPABILITY)
3748                         return -EINVAL;
3749                 if (params->supported_rates)
3750                         return -EINVAL;
3751                 if (params->ext_capab || params->ht_capa || params->vht_capa)
3752                         return -EINVAL;
3753         }
3754
3755         if (statype != CFG80211_STA_AP_CLIENT) {
3756                 if (params->vlan)
3757                         return -EINVAL;
3758         }
3759
3760         switch (statype) {
3761         case CFG80211_STA_AP_MLME_CLIENT:
3762                 /* Use this only for authorizing/unauthorizing a station */
3763                 if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)))
3764                         return -EOPNOTSUPP;
3765                 break;
3766         case CFG80211_STA_AP_CLIENT:
3767                 /* accept only the listed bits */
3768                 if (params->sta_flags_mask &
3769                                 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
3770                                   BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3771                                   BIT(NL80211_STA_FLAG_ASSOCIATED) |
3772                                   BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
3773                                   BIT(NL80211_STA_FLAG_WME) |
3774                                   BIT(NL80211_STA_FLAG_MFP)))
3775                         return -EINVAL;
3776
3777                 /* but authenticated/associated only if driver handles it */
3778                 if (!(wiphy->features & NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
3779                     params->sta_flags_mask &
3780                                 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3781                                  BIT(NL80211_STA_FLAG_ASSOCIATED)))
3782                         return -EINVAL;
3783                 break;
3784         case CFG80211_STA_IBSS:
3785         case CFG80211_STA_AP_STA:
3786                 /* reject any changes other than AUTHORIZED */
3787                 if (params->sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
3788                         return -EINVAL;
3789                 break;
3790         case CFG80211_STA_TDLS_PEER_SETUP:
3791                 /* reject any changes other than AUTHORIZED or WME */
3792                 if (params->sta_flags_mask & ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
3793                                                BIT(NL80211_STA_FLAG_WME)))
3794                         return -EINVAL;
3795                 /* force (at least) rates when authorizing */
3796                 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED) &&
3797                     !params->supported_rates)
3798                         return -EINVAL;
3799                 break;
3800         case CFG80211_STA_TDLS_PEER_ACTIVE:
3801                 /* reject any changes */
3802                 return -EINVAL;
3803         case CFG80211_STA_MESH_PEER_KERNEL:
3804                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
3805                         return -EINVAL;
3806                 break;
3807         case CFG80211_STA_MESH_PEER_USER:
3808                 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
3809                         return -EINVAL;
3810                 break;
3811         }
3812
3813         return 0;
3814 }
3815 EXPORT_SYMBOL(cfg80211_check_station_change);
3816
3817 /*
3818  * Get vlan interface making sure it is running and on the right wiphy.
3819  */
3820 static struct net_device *get_vlan(struct genl_info *info,
3821                                    struct cfg80211_registered_device *rdev)
3822 {
3823         struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
3824         struct net_device *v;
3825         int ret;
3826
3827         if (!vlanattr)
3828                 return NULL;
3829
3830         v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr));
3831         if (!v)
3832                 return ERR_PTR(-ENODEV);
3833
3834         if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) {
3835                 ret = -EINVAL;
3836                 goto error;
3837         }
3838
3839         if (v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
3840             v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3841             v->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
3842                 ret = -EINVAL;
3843                 goto error;
3844         }
3845
3846         if (!netif_running(v)) {
3847                 ret = -ENETDOWN;
3848                 goto error;
3849         }
3850
3851         return v;
3852  error:
3853         dev_put(v);
3854         return ERR_PTR(ret);
3855 }
3856
3857 static struct nla_policy
3858 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] __read_mostly = {
3859         [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
3860         [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
3861 };
3862
3863 static int nl80211_parse_sta_wme(struct genl_info *info,
3864                                  struct station_parameters *params)
3865 {
3866         struct nlattr *tb[NL80211_STA_WME_MAX + 1];
3867         struct nlattr *nla;
3868         int err;
3869
3870         /* parse WME attributes if present */
3871         if (!info->attrs[NL80211_ATTR_STA_WME])
3872                 return 0;
3873
3874         nla = info->attrs[NL80211_ATTR_STA_WME];
3875         err = nla_parse_nested(tb, NL80211_STA_WME_MAX, nla,
3876                                nl80211_sta_wme_policy);
3877         if (err)
3878                 return err;
3879
3880         if (tb[NL80211_STA_WME_UAPSD_QUEUES])
3881                 params->uapsd_queues = nla_get_u8(
3882                         tb[NL80211_STA_WME_UAPSD_QUEUES]);
3883         if (params->uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
3884                 return -EINVAL;
3885
3886         if (tb[NL80211_STA_WME_MAX_SP])
3887                 params->max_sp = nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
3888
3889         if (params->max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
3890                 return -EINVAL;
3891
3892         params->sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
3893
3894         return 0;
3895 }
3896
3897 static int nl80211_set_station_tdls(struct genl_info *info,
3898                                     struct station_parameters *params)
3899 {
3900         /* Dummy STA entry gets updated once the peer capabilities are known */
3901         if (info->attrs[NL80211_ATTR_PEER_AID])
3902                 params->aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
3903         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
3904                 params->ht_capa =
3905                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
3906         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
3907                 params->vht_capa =
3908                         nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
3909
3910         return nl80211_parse_sta_wme(info, params);
3911 }
3912
3913 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
3914 {
3915         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3916         struct net_device *dev = info->user_ptr[1];
3917         struct station_parameters params;
3918         u8 *mac_addr;
3919         int err;
3920
3921         memset(&params, 0, sizeof(params));
3922
3923         params.listen_interval = -1;
3924
3925         if (!rdev->ops->change_station)
3926                 return -EOPNOTSUPP;
3927
3928         if (info->attrs[NL80211_ATTR_STA_AID])
3929                 return -EINVAL;
3930
3931         if (!info->attrs[NL80211_ATTR_MAC])
3932                 return -EINVAL;
3933
3934         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3935
3936         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
3937                 params.supported_rates =
3938                         nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
3939                 params.supported_rates_len =
3940                         nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
3941         }
3942
3943         if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
3944                 params.capability =
3945                         nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
3946                 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
3947         }
3948
3949         if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
3950                 params.ext_capab =
3951                         nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
3952                 params.ext_capab_len =
3953                         nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
3954         }
3955
3956         if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
3957                 return -EINVAL;
3958
3959         if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
3960                 return -EINVAL;
3961
3962         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
3963                 params.plink_action =
3964                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
3965                 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
3966                         return -EINVAL;
3967         }
3968
3969         if (info->attrs[NL80211_ATTR_STA_PLINK_STATE]) {
3970                 params.plink_state =
3971                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
3972                 if (params.plink_state >= NUM_NL80211_PLINK_STATES)
3973                         return -EINVAL;
3974                 params.sta_modify_mask |= STATION_PARAM_APPLY_PLINK_STATE;
3975         }
3976
3977         if (info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]) {
3978                 enum nl80211_mesh_power_mode pm = nla_get_u32(
3979                         info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]);
3980
3981                 if (pm <= NL80211_MESH_POWER_UNKNOWN ||
3982                     pm > NL80211_MESH_POWER_MAX)
3983                         return -EINVAL;
3984
3985                 params.local_pm = pm;
3986         }
3987
3988         /* Include parameters for TDLS peer (will check later) */
3989         err = nl80211_set_station_tdls(info, &params);
3990         if (err)
3991                 return err;
3992
3993         params.vlan = get_vlan(info, rdev);
3994         if (IS_ERR(params.vlan))
3995                 return PTR_ERR(params.vlan);
3996
3997         switch (dev->ieee80211_ptr->iftype) {
3998         case NL80211_IFTYPE_AP:
3999         case NL80211_IFTYPE_AP_VLAN:
4000         case NL80211_IFTYPE_P2P_GO:
4001         case NL80211_IFTYPE_P2P_CLIENT:
4002         case NL80211_IFTYPE_STATION:
4003         case NL80211_IFTYPE_ADHOC:
4004         case NL80211_IFTYPE_MESH_POINT:
4005                 break;
4006         default:
4007                 err = -EOPNOTSUPP;
4008                 goto out_put_vlan;
4009         }
4010
4011         /* driver will call cfg80211_check_station_change() */
4012         err = rdev_change_station(rdev, dev, mac_addr, &params);
4013
4014  out_put_vlan:
4015         if (params.vlan)
4016                 dev_put(params.vlan);
4017
4018         return err;
4019 }
4020
4021 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
4022 {
4023         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4024         int err;
4025         struct net_device *dev = info->user_ptr[1];
4026         struct station_parameters params;
4027         u8 *mac_addr = NULL;
4028
4029         memset(&params, 0, sizeof(params));
4030
4031         if (!rdev->ops->add_station)
4032                 return -EOPNOTSUPP;
4033
4034         if (!info->attrs[NL80211_ATTR_MAC])
4035                 return -EINVAL;
4036
4037         if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
4038                 return -EINVAL;
4039
4040         if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
4041                 return -EINVAL;
4042
4043         if (!info->attrs[NL80211_ATTR_STA_AID] &&
4044             !info->attrs[NL80211_ATTR_PEER_AID])
4045                 return -EINVAL;
4046
4047         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4048         params.supported_rates =
4049                 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4050         params.supported_rates_len =
4051                 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4052         params.listen_interval =
4053                 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
4054
4055         if (info->attrs[NL80211_ATTR_PEER_AID])
4056                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
4057         else
4058                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
4059         if (!params.aid || params.aid > IEEE80211_MAX_AID)
4060                 return -EINVAL;
4061
4062         if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
4063                 params.capability =
4064                         nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
4065                 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
4066         }
4067
4068         if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
4069                 params.ext_capab =
4070                         nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4071                 params.ext_capab_len =
4072                         nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4073         }
4074
4075         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
4076                 params.ht_capa =
4077                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
4078
4079         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
4080                 params.vht_capa =
4081                         nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
4082
4083         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
4084                 params.plink_action =
4085                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
4086                 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
4087                         return -EINVAL;
4088         }
4089
4090         err = nl80211_parse_sta_wme(info, &params);
4091         if (err)
4092                 return err;
4093
4094         if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
4095                 return -EINVAL;
4096
4097         /* When you run into this, adjust the code below for the new flag */
4098         BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
4099
4100         switch (dev->ieee80211_ptr->iftype) {
4101         case NL80211_IFTYPE_AP:
4102         case NL80211_IFTYPE_AP_VLAN:
4103         case NL80211_IFTYPE_P2P_GO:
4104                 /* ignore WME attributes if iface/sta is not capable */
4105                 if (!(rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) ||
4106                     !(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)))
4107                         params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4108
4109                 /* TDLS peers cannot be added */
4110                 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
4111                     info->attrs[NL80211_ATTR_PEER_AID])
4112                         return -EINVAL;
4113                 /* but don't bother the driver with it */
4114                 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
4115
4116                 /* allow authenticated/associated only if driver handles it */
4117                 if (!(rdev->wiphy.features &
4118                                 NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
4119                     params.sta_flags_mask &
4120                                 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4121                                  BIT(NL80211_STA_FLAG_ASSOCIATED)))
4122                         return -EINVAL;
4123
4124                 /* must be last in here for error handling */
4125                 params.vlan = get_vlan(info, rdev);
4126                 if (IS_ERR(params.vlan))
4127                         return PTR_ERR(params.vlan);
4128                 break;
4129         case NL80211_IFTYPE_MESH_POINT:
4130                 /* ignore uAPSD data */
4131                 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4132
4133                 /* associated is disallowed */
4134                 if (params.sta_flags_mask & BIT(NL80211_STA_FLAG_ASSOCIATED))
4135                         return -EINVAL;
4136                 /* TDLS peers cannot be added */
4137                 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
4138                     info->attrs[NL80211_ATTR_PEER_AID])
4139                         return -EINVAL;
4140                 break;
4141         case NL80211_IFTYPE_STATION:
4142         case NL80211_IFTYPE_P2P_CLIENT:
4143                 /* ignore uAPSD data */
4144                 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4145
4146                 /* these are disallowed */
4147                 if (params.sta_flags_mask &
4148                                 (BIT(NL80211_STA_FLAG_ASSOCIATED) |
4149                                  BIT(NL80211_STA_FLAG_AUTHENTICATED)))
4150                         return -EINVAL;
4151                 /* Only TDLS peers can be added */
4152                 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
4153                         return -EINVAL;
4154                 /* Can only add if TDLS ... */
4155                 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS))
4156                         return -EOPNOTSUPP;
4157                 /* ... with external setup is supported */
4158                 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP))
4159                         return -EOPNOTSUPP;
4160                 /*
4161                  * Older wpa_supplicant versions always mark the TDLS peer
4162                  * as authorized, but it shouldn't yet be.
4163                  */
4164                 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_AUTHORIZED);
4165                 break;
4166         default:
4167                 return -EOPNOTSUPP;
4168         }
4169
4170         /* be aware of params.vlan when changing code here */
4171
4172         err = rdev_add_station(rdev, dev, mac_addr, &params);
4173
4174         if (params.vlan)
4175                 dev_put(params.vlan);
4176         return err;
4177 }
4178
4179 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
4180 {
4181         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4182         struct net_device *dev = info->user_ptr[1];
4183         u8 *mac_addr = NULL;
4184
4185         if (info->attrs[NL80211_ATTR_MAC])
4186                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4187
4188         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4189             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
4190             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
4191             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4192                 return -EINVAL;
4193
4194         if (!rdev->ops->del_station)
4195                 return -EOPNOTSUPP;
4196
4197         return rdev_del_station(rdev, dev, mac_addr);
4198 }
4199
4200 static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq,
4201                                 int flags, struct net_device *dev,
4202                                 u8 *dst, u8 *next_hop,
4203                                 struct mpath_info *pinfo)
4204 {
4205         void *hdr;
4206         struct nlattr *pinfoattr;
4207
4208         hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_STATION);
4209         if (!hdr)
4210                 return -1;
4211
4212         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
4213             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
4214             nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) ||
4215             nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation))
4216                 goto nla_put_failure;
4217
4218         pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO);
4219         if (!pinfoattr)
4220                 goto nla_put_failure;
4221         if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) &&
4222             nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
4223                         pinfo->frame_qlen))
4224                 goto nla_put_failure;
4225         if (((pinfo->filled & MPATH_INFO_SN) &&
4226              nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) ||
4227             ((pinfo->filled & MPATH_INFO_METRIC) &&
4228              nla_put_u32(msg, NL80211_MPATH_INFO_METRIC,
4229                          pinfo->metric)) ||
4230             ((pinfo->filled & MPATH_INFO_EXPTIME) &&
4231              nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME,
4232                          pinfo->exptime)) ||
4233             ((pinfo->filled & MPATH_INFO_FLAGS) &&
4234              nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS,
4235                         pinfo->flags)) ||
4236             ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) &&
4237              nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
4238                          pinfo->discovery_timeout)) ||
4239             ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) &&
4240              nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
4241                         pinfo->discovery_retries)))
4242                 goto nla_put_failure;
4243
4244         nla_nest_end(msg, pinfoattr);
4245
4246         return genlmsg_end(msg, hdr);
4247
4248  nla_put_failure:
4249         genlmsg_cancel(msg, hdr);
4250         return -EMSGSIZE;
4251 }
4252
4253 static int nl80211_dump_mpath(struct sk_buff *skb,
4254                               struct netlink_callback *cb)
4255 {
4256         struct mpath_info pinfo;
4257         struct cfg80211_registered_device *dev;
4258         struct wireless_dev *wdev;
4259         u8 dst[ETH_ALEN];
4260         u8 next_hop[ETH_ALEN];
4261         int path_idx = cb->args[2];
4262         int err;
4263
4264         err = nl80211_prepare_wdev_dump(skb, cb, &dev, &wdev);
4265         if (err)
4266                 return err;
4267
4268         if (!dev->ops->dump_mpath) {
4269                 err = -EOPNOTSUPP;
4270                 goto out_err;
4271         }
4272
4273         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
4274                 err = -EOPNOTSUPP;
4275                 goto out_err;
4276         }
4277
4278         while (1) {
4279                 err = rdev_dump_mpath(dev, wdev->netdev, path_idx, dst,
4280                                       next_hop, &pinfo);
4281                 if (err == -ENOENT)
4282                         break;
4283                 if (err)
4284                         goto out_err;
4285
4286                 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
4287                                        cb->nlh->nlmsg_seq, NLM_F_MULTI,
4288                                        wdev->netdev, dst, next_hop,
4289                                        &pinfo) < 0)
4290                         goto out;
4291
4292                 path_idx++;
4293         }
4294
4295
4296  out:
4297         cb->args[2] = path_idx;
4298         err = skb->len;
4299  out_err:
4300         nl80211_finish_wdev_dump(dev);
4301         return err;
4302 }
4303
4304 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
4305 {
4306         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4307         int err;
4308         struct net_device *dev = info->user_ptr[1];
4309         struct mpath_info pinfo;
4310         struct sk_buff *msg;
4311         u8 *dst = NULL;
4312         u8 next_hop[ETH_ALEN];
4313
4314         memset(&pinfo, 0, sizeof(pinfo));
4315
4316         if (!info->attrs[NL80211_ATTR_MAC])
4317                 return -EINVAL;
4318
4319         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4320
4321         if (!rdev->ops->get_mpath)
4322                 return -EOPNOTSUPP;
4323
4324         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4325                 return -EOPNOTSUPP;
4326
4327         err = rdev_get_mpath(rdev, dev, dst, next_hop, &pinfo);
4328         if (err)
4329                 return err;
4330
4331         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4332         if (!msg)
4333                 return -ENOMEM;
4334
4335         if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
4336                                  dev, dst, next_hop, &pinfo) < 0) {
4337                 nlmsg_free(msg);
4338                 return -ENOBUFS;
4339         }
4340
4341         return genlmsg_reply(msg, info);
4342 }
4343
4344 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
4345 {
4346         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4347         struct net_device *dev = info->user_ptr[1];
4348         u8 *dst = NULL;
4349         u8 *next_hop = NULL;
4350
4351         if (!info->attrs[NL80211_ATTR_MAC])
4352                 return -EINVAL;
4353
4354         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
4355                 return -EINVAL;
4356
4357         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4358         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
4359
4360         if (!rdev->ops->change_mpath)
4361                 return -EOPNOTSUPP;
4362
4363         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4364                 return -EOPNOTSUPP;
4365
4366         return rdev_change_mpath(rdev, dev, dst, next_hop);
4367 }
4368
4369 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
4370 {
4371         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4372         struct net_device *dev = info->user_ptr[1];
4373         u8 *dst = NULL;
4374         u8 *next_hop = NULL;
4375
4376         if (!info->attrs[NL80211_ATTR_MAC])
4377                 return -EINVAL;
4378
4379         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
4380                 return -EINVAL;
4381
4382         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4383         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
4384
4385         if (!rdev->ops->add_mpath)
4386                 return -EOPNOTSUPP;
4387
4388         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4389                 return -EOPNOTSUPP;
4390
4391         return rdev_add_mpath(rdev, dev, dst, next_hop);
4392 }
4393
4394 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
4395 {
4396         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4397         struct net_device *dev = info->user_ptr[1];
4398         u8 *dst = NULL;
4399
4400         if (info->attrs[NL80211_ATTR_MAC])
4401                 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4402
4403         if (!rdev->ops->del_mpath)
4404                 return -EOPNOTSUPP;
4405
4406         return rdev_del_mpath(rdev, dev, dst);
4407 }
4408
4409 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
4410 {
4411         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4412         struct net_device *dev = info->user_ptr[1];
4413         struct bss_parameters params;
4414
4415         memset(&params, 0, sizeof(params));
4416         /* default to not changing parameters */
4417         params.use_cts_prot = -1;
4418         params.use_short_preamble = -1;
4419         params.use_short_slot_time = -1;
4420         params.ap_isolate = -1;
4421         params.ht_opmode = -1;
4422         params.p2p_ctwindow = -1;
4423         params.p2p_opp_ps = -1;
4424
4425         if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
4426                 params.use_cts_prot =
4427                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
4428         if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
4429                 params.use_short_preamble =
4430                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
4431         if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
4432                 params.use_short_slot_time =
4433                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
4434         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
4435                 params.basic_rates =
4436                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4437                 params.basic_rates_len =
4438                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4439         }
4440         if (info->attrs[NL80211_ATTR_AP_ISOLATE])
4441                 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
4442         if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
4443                 params.ht_opmode =
4444                         nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
4445
4446         if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
4447                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4448                         return -EINVAL;
4449                 params.p2p_ctwindow =
4450                         nla_get_s8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
4451                 if (params.p2p_ctwindow < 0)
4452                         return -EINVAL;
4453                 if (params.p2p_ctwindow != 0 &&
4454                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
4455                         return -EINVAL;
4456         }
4457
4458         if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
4459                 u8 tmp;
4460
4461                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4462                         return -EINVAL;
4463                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
4464                 if (tmp > 1)
4465                         return -EINVAL;
4466                 params.p2p_opp_ps = tmp;
4467                 if (params.p2p_opp_ps &&
4468                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
4469                         return -EINVAL;
4470         }
4471
4472         if (!rdev->ops->change_bss)
4473                 return -EOPNOTSUPP;
4474
4475         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4476             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4477                 return -EOPNOTSUPP;
4478
4479         return rdev_change_bss(rdev, dev, &params);
4480 }
4481
4482 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
4483         [NL80211_ATTR_REG_RULE_FLAGS]           = { .type = NLA_U32 },
4484         [NL80211_ATTR_FREQ_RANGE_START]         = { .type = NLA_U32 },
4485         [NL80211_ATTR_FREQ_RANGE_END]           = { .type = NLA_U32 },
4486         [NL80211_ATTR_FREQ_RANGE_MAX_BW]        = { .type = NLA_U32 },
4487         [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]  = { .type = NLA_U32 },
4488         [NL80211_ATTR_POWER_RULE_MAX_EIRP]      = { .type = NLA_U32 },
4489 };
4490
4491 static int parse_reg_rule(struct nlattr *tb[],
4492         struct ieee80211_reg_rule *reg_rule)
4493 {
4494         struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
4495         struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
4496
4497         if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
4498                 return -EINVAL;
4499         if (!tb[NL80211_ATTR_FREQ_RANGE_START])
4500                 return -EINVAL;
4501         if (!tb[NL80211_ATTR_FREQ_RANGE_END])
4502                 return -EINVAL;
4503         if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
4504                 return -EINVAL;
4505         if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
4506                 return -EINVAL;
4507
4508         reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
4509
4510         freq_range->start_freq_khz =
4511                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
4512         freq_range->end_freq_khz =
4513                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
4514         freq_range->max_bandwidth_khz =
4515                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
4516
4517         power_rule->max_eirp =
4518                 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
4519
4520         if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
4521                 power_rule->max_antenna_gain =
4522                         nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
4523
4524         return 0;
4525 }
4526
4527 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
4528 {
4529         int r;
4530         char *data = NULL;
4531         enum nl80211_user_reg_hint_type user_reg_hint_type;
4532
4533         /*
4534          * You should only get this when cfg80211 hasn't yet initialized
4535          * completely when built-in to the kernel right between the time
4536          * window between nl80211_init() and regulatory_init(), if that is
4537          * even possible.
4538          */
4539         if (unlikely(!rcu_access_pointer(cfg80211_regdomain)))
4540                 return -EINPROGRESS;
4541
4542         if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
4543                 return -EINVAL;
4544
4545         data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
4546
4547         if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE])
4548                 user_reg_hint_type =
4549                   nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]);
4550         else
4551                 user_reg_hint_type = NL80211_USER_REG_HINT_USER;
4552
4553         switch (user_reg_hint_type) {
4554         case NL80211_USER_REG_HINT_USER:
4555         case NL80211_USER_REG_HINT_CELL_BASE:
4556                 break;
4557         default:
4558                 return -EINVAL;
4559         }
4560
4561         r = regulatory_hint_user(data, user_reg_hint_type);
4562
4563         return r;
4564 }
4565
4566 static int nl80211_get_mesh_config(struct sk_buff *skb,
4567                                    struct genl_info *info)
4568 {
4569         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4570         struct net_device *dev = info->user_ptr[1];
4571         struct wireless_dev *wdev = dev->ieee80211_ptr;
4572         struct mesh_config cur_params;
4573         int err = 0;
4574         void *hdr;
4575         struct nlattr *pinfoattr;
4576         struct sk_buff *msg;
4577
4578         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
4579                 return -EOPNOTSUPP;
4580
4581         if (!rdev->ops->get_mesh_config)
4582                 return -EOPNOTSUPP;
4583
4584         wdev_lock(wdev);
4585         /* If not connected, get default parameters */
4586         if (!wdev->mesh_id_len)
4587                 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
4588         else
4589                 err = rdev_get_mesh_config(rdev, dev, &cur_params);
4590         wdev_unlock(wdev);
4591
4592         if (err)
4593                 return err;
4594
4595         /* Draw up a netlink message to send back */
4596         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4597         if (!msg)
4598                 return -ENOMEM;
4599         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
4600                              NL80211_CMD_GET_MESH_CONFIG);
4601         if (!hdr)
4602                 goto out;
4603         pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG);
4604         if (!pinfoattr)
4605                 goto nla_put_failure;
4606         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
4607             nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
4608                         cur_params.dot11MeshRetryTimeout) ||
4609             nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
4610                         cur_params.dot11MeshConfirmTimeout) ||
4611             nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
4612                         cur_params.dot11MeshHoldingTimeout) ||
4613             nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
4614                         cur_params.dot11MeshMaxPeerLinks) ||
4615             nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES,
4616                        cur_params.dot11MeshMaxRetries) ||
4617             nla_put_u8(msg, NL80211_MESHCONF_TTL,
4618                        cur_params.dot11MeshTTL) ||
4619             nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL,
4620                        cur_params.element_ttl) ||
4621             nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
4622                        cur_params.auto_open_plinks) ||
4623             nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
4624                         cur_params.dot11MeshNbrOffsetMaxNeighbor) ||
4625             nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
4626                        cur_params.dot11MeshHWMPmaxPREQretries) ||
4627             nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
4628                         cur_params.path_refresh_time) ||
4629             nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
4630                         cur_params.min_discovery_timeout) ||
4631             nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
4632                         cur_params.dot11MeshHWMPactivePathTimeout) ||
4633             nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
4634                         cur_params.dot11MeshHWMPpreqMinInterval) ||
4635             nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
4636                         cur_params.dot11MeshHWMPperrMinInterval) ||
4637             nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
4638                         cur_params.dot11MeshHWMPnetDiameterTraversalTime) ||
4639             nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
4640                        cur_params.dot11MeshHWMPRootMode) ||
4641             nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
4642                         cur_params.dot11MeshHWMPRannInterval) ||
4643             nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
4644                        cur_params.dot11MeshGateAnnouncementProtocol) ||
4645             nla_put_u8(msg, NL80211_MESHCONF_FORWARDING,
4646                        cur_params.dot11MeshForwarding) ||
4647             nla_put_u32(msg, NL80211_MESHCONF_RSSI_THRESHOLD,
4648                         cur_params.rssi_threshold) ||
4649             nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE,
4650                         cur_params.ht_opmode) ||
4651             nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
4652                         cur_params.dot11MeshHWMPactivePathToRootTimeout) ||
4653             nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
4654                         cur_params.dot11MeshHWMProotInterval) ||
4655             nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
4656                         cur_params.dot11MeshHWMPconfirmationInterval) ||
4657             nla_put_u32(msg, NL80211_MESHCONF_POWER_MODE,
4658                         cur_params.power_mode) ||
4659             nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW,
4660                         cur_params.dot11MeshAwakeWindowDuration) ||
4661             nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT,
4662                         cur_params.plink_timeout))
4663                 goto nla_put_failure;
4664         nla_nest_end(msg, pinfoattr);
4665         genlmsg_end(msg, hdr);
4666         return genlmsg_reply(msg, info);
4667
4668  nla_put_failure:
4669         genlmsg_cancel(msg, hdr);
4670  out:
4671         nlmsg_free(msg);
4672         return -ENOBUFS;
4673 }
4674
4675 static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
4676         [NL80211_MESHCONF_RETRY_TIMEOUT] = { .type = NLA_U16 },
4677         [NL80211_MESHCONF_CONFIRM_TIMEOUT] = { .type = NLA_U16 },
4678         [NL80211_MESHCONF_HOLDING_TIMEOUT] = { .type = NLA_U16 },
4679         [NL80211_MESHCONF_MAX_PEER_LINKS] = { .type = NLA_U16 },
4680         [NL80211_MESHCONF_MAX_RETRIES] = { .type = NLA_U8 },
4681         [NL80211_MESHCONF_TTL] = { .type = NLA_U8 },
4682         [NL80211_MESHCONF_ELEMENT_TTL] = { .type = NLA_U8 },
4683         [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = { .type = NLA_U8 },
4684         [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] = { .type = NLA_U32 },
4685         [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
4686         [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
4687         [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = { .type = NLA_U16 },
4688         [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
4689         [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 },
4690         [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] = { .type = NLA_U16 },
4691         [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 },
4692         [NL80211_MESHCONF_HWMP_ROOTMODE] = { .type = NLA_U8 },
4693         [NL80211_MESHCONF_HWMP_RANN_INTERVAL] = { .type = NLA_U16 },
4694         [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = { .type = NLA_U8 },
4695         [NL80211_MESHCONF_FORWARDING] = { .type = NLA_U8 },
4696         [NL80211_MESHCONF_RSSI_THRESHOLD] = { .type = NLA_U32 },
4697         [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 },
4698         [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 },
4699         [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] = { .type = NLA_U16 },
4700         [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] = { .type = NLA_U16 },
4701         [NL80211_MESHCONF_POWER_MODE] = { .type = NLA_U32 },
4702         [NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 },
4703         [NL80211_MESHCONF_PLINK_TIMEOUT] = { .type = NLA_U32 },
4704 };
4705
4706 static const struct nla_policy
4707         nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
4708         [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 },
4709         [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
4710         [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
4711         [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
4712         [NL80211_MESH_SETUP_AUTH_PROTOCOL] = { .type = NLA_U8 },
4713         [NL80211_MESH_SETUP_USERSPACE_MPM] = { .type = NLA_FLAG },
4714         [NL80211_MESH_SETUP_IE] = { .type = NLA_BINARY,
4715                                     .len = IEEE80211_MAX_DATA_LEN },
4716         [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
4717 };
4718
4719 static int nl80211_parse_mesh_config(struct genl_info *info,
4720                                      struct mesh_config *cfg,
4721                                      u32 *mask_out)
4722 {
4723         struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
4724         u32 mask = 0;
4725
4726 #define FILL_IN_MESH_PARAM_IF_SET(tb, cfg, param, min, max, mask, attr, fn) \
4727 do {                                                                        \
4728         if (tb[attr]) {                                                     \
4729                 if (fn(tb[attr]) < min || fn(tb[attr]) > max)               \
4730                         return -EINVAL;                                     \
4731                 cfg->param = fn(tb[attr]);                                  \
4732                 mask |= (1 << (attr - 1));                                  \
4733         }                                                                   \
4734 } while (0)
4735
4736
4737         if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
4738                 return -EINVAL;
4739         if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX,
4740                              info->attrs[NL80211_ATTR_MESH_CONFIG],
4741                              nl80211_meshconf_params_policy))
4742                 return -EINVAL;
4743
4744         /* This makes sure that there aren't more than 32 mesh config
4745          * parameters (otherwise our bitfield scheme would not work.) */
4746         BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
4747
4748         /* Fill in the params struct */
4749         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, 1, 255,
4750                                   mask, NL80211_MESHCONF_RETRY_TIMEOUT,
4751                                   nla_get_u16);
4752         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, 1, 255,
4753                                   mask, NL80211_MESHCONF_CONFIRM_TIMEOUT,
4754                                   nla_get_u16);
4755         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, 1, 255,
4756                                   mask, NL80211_MESHCONF_HOLDING_TIMEOUT,
4757                                   nla_get_u16);
4758         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, 0, 255,
4759                                   mask, NL80211_MESHCONF_MAX_PEER_LINKS,
4760                                   nla_get_u16);
4761         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, 0, 16,
4762                                   mask, NL80211_MESHCONF_MAX_RETRIES,
4763                                   nla_get_u8);
4764         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, 1, 255,
4765                                   mask, NL80211_MESHCONF_TTL, nla_get_u8);
4766         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl, 1, 255,
4767                                   mask, NL80211_MESHCONF_ELEMENT_TTL,
4768                                   nla_get_u8);
4769         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, 0, 1,
4770                                   mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
4771                                   nla_get_u8);
4772         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor,
4773                                   1, 255, mask,
4774                                   NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
4775                                   nla_get_u32);
4776         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, 0, 255,
4777                                   mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
4778                                   nla_get_u8);
4779         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, 1, 65535,
4780                                   mask, NL80211_MESHCONF_PATH_REFRESH_TIME,
4781                                   nla_get_u32);
4782         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, 1, 65535,
4783                                   mask, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
4784                                   nla_get_u16);
4785         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
4786                                   1, 65535, mask,
4787                                   NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
4788                                   nla_get_u32);
4789         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval,
4790                                   1, 65535, mask,
4791                                   NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
4792                                   nla_get_u16);
4793         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval,
4794                                   1, 65535, mask,
4795                                   NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
4796                                   nla_get_u16);
4797         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
4798                                   dot11MeshHWMPnetDiameterTraversalTime,
4799                                   1, 65535, mask,
4800                                   NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
4801                                   nla_get_u16);
4802         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, 0, 4,
4803                                   mask, NL80211_MESHCONF_HWMP_ROOTMODE,
4804                                   nla_get_u8);
4805         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, 1, 65535,
4806                                   mask, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
4807                                   nla_get_u16);
4808         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
4809                                   dot11MeshGateAnnouncementProtocol, 0, 1,
4810                                   mask, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
4811                                   nla_get_u8);
4812         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding, 0, 1,
4813                                   mask, NL80211_MESHCONF_FORWARDING,
4814                                   nla_get_u8);
4815         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold, 1, 255,
4816                                   mask, NL80211_MESHCONF_RSSI_THRESHOLD,
4817                                   nla_get_u32);
4818         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, ht_opmode, 0, 16,
4819                                   mask, NL80211_MESHCONF_HT_OPMODE,
4820                                   nla_get_u16);
4821         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathToRootTimeout,
4822                                   1, 65535, mask,
4823                                   NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
4824                                   nla_get_u32);
4825         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval, 1, 65535,
4826                                   mask, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
4827                                   nla_get_u16);
4828         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
4829                                   dot11MeshHWMPconfirmationInterval,
4830                                   1, 65535, mask,
4831                                   NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
4832                                   nla_get_u16);
4833         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, power_mode,
4834                                   NL80211_MESH_POWER_ACTIVE,
4835                                   NL80211_MESH_POWER_MAX,
4836                                   mask, NL80211_MESHCONF_POWER_MODE,
4837                                   nla_get_u32);
4838         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration,
4839                                   0, 65535, mask,
4840                                   NL80211_MESHCONF_AWAKE_WINDOW, nla_get_u16);
4841         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, plink_timeout, 1, 0xffffffff,
4842                                   mask, NL80211_MESHCONF_PLINK_TIMEOUT,
4843                                   nla_get_u32);
4844         if (mask_out)
4845                 *mask_out = mask;
4846
4847         return 0;
4848
4849 #undef FILL_IN_MESH_PARAM_IF_SET
4850 }
4851
4852 static int nl80211_parse_mesh_setup(struct genl_info *info,
4853                                      struct mesh_setup *setup)
4854 {
4855         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4856         struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
4857
4858         if (!info->attrs[NL80211_ATTR_MESH_SETUP])
4859                 return -EINVAL;
4860         if (nla_parse_nested(tb, NL80211_MESH_SETUP_ATTR_MAX,
4861                              info->attrs[NL80211_ATTR_MESH_SETUP],
4862                              nl80211_mesh_setup_params_policy))
4863                 return -EINVAL;
4864
4865         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])
4866                 setup->sync_method =
4867                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ?
4868                  IEEE80211_SYNC_METHOD_VENDOR :
4869                  IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET;
4870
4871         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
4872                 setup->path_sel_proto =
4873                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
4874                  IEEE80211_PATH_PROTOCOL_VENDOR :
4875                  IEEE80211_PATH_PROTOCOL_HWMP;
4876
4877         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
4878                 setup->path_metric =
4879                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
4880                  IEEE80211_PATH_METRIC_VENDOR :
4881                  IEEE80211_PATH_METRIC_AIRTIME;
4882
4883
4884         if (tb[NL80211_MESH_SETUP_IE]) {
4885                 struct nlattr *ieattr =
4886                         tb[NL80211_MESH_SETUP_IE];
4887                 if (!is_valid_ie_attr(ieattr))
4888                         return -EINVAL;
4889                 setup->ie = nla_data(ieattr);
4890                 setup->ie_len = nla_len(ieattr);
4891         }
4892         if (tb[NL80211_MESH_SETUP_USERSPACE_MPM] &&
4893             !(rdev->wiphy.features & NL80211_FEATURE_USERSPACE_MPM))
4894                 return -EINVAL;
4895         setup->user_mpm = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_MPM]);
4896         setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
4897         setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
4898         if (setup->is_secure)
4899                 setup->user_mpm = true;
4900
4901         if (tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]) {
4902                 if (!setup->user_mpm)
4903                         return -EINVAL;
4904                 setup->auth_id =
4905                         nla_get_u8(tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]);
4906         }
4907
4908         return 0;
4909 }
4910
4911 static int nl80211_update_mesh_config(struct sk_buff *skb,
4912                                       struct genl_info *info)
4913 {
4914         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4915         struct net_device *dev = info->user_ptr[1];
4916         struct wireless_dev *wdev = dev->ieee80211_ptr;
4917         struct mesh_config cfg;
4918         u32 mask;
4919         int err;
4920
4921         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
4922                 return -EOPNOTSUPP;
4923
4924         if (!rdev->ops->update_mesh_config)
4925                 return -EOPNOTSUPP;
4926
4927         err = nl80211_parse_mesh_config(info, &cfg, &mask);
4928         if (err)
4929                 return err;
4930
4931         wdev_lock(wdev);
4932         if (!wdev->mesh_id_len)
4933                 err = -ENOLINK;
4934
4935         if (!err)
4936                 err = rdev_update_mesh_config(rdev, dev, mask, &cfg);
4937
4938         wdev_unlock(wdev);
4939
4940         return err;
4941 }
4942
4943 static int nl80211_get_reg(struct sk_buff *skb, struct genl_info *info)
4944 {
4945         const struct ieee80211_regdomain *regdom;
4946         struct sk_buff *msg;
4947         void *hdr = NULL;
4948         struct nlattr *nl_reg_rules;
4949         unsigned int i;
4950
4951         if (!cfg80211_regdomain)
4952                 return -EINVAL;
4953
4954         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4955         if (!msg)
4956                 return -ENOBUFS;
4957
4958         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
4959                              NL80211_CMD_GET_REG);
4960         if (!hdr)
4961                 goto put_failure;
4962
4963         if (reg_last_request_cell_base() &&
4964             nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
4965                         NL80211_USER_REG_HINT_CELL_BASE))
4966                 goto nla_put_failure;
4967
4968         rcu_read_lock();
4969         regdom = rcu_dereference(cfg80211_regdomain);
4970
4971         if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, regdom->alpha2) ||
4972             (regdom->dfs_region &&
4973              nla_put_u8(msg, NL80211_ATTR_DFS_REGION, regdom->dfs_region)))
4974                 goto nla_put_failure_rcu;
4975
4976         nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES);
4977         if (!nl_reg_rules)
4978                 goto nla_put_failure_rcu;
4979
4980         for (i = 0; i < regdom->n_reg_rules; i++) {
4981                 struct nlattr *nl_reg_rule;
4982                 const struct ieee80211_reg_rule *reg_rule;
4983                 const struct ieee80211_freq_range *freq_range;
4984                 const struct ieee80211_power_rule *power_rule;
4985
4986                 reg_rule = &regdom->reg_rules[i];
4987                 freq_range = &reg_rule->freq_range;
4988                 power_rule = &reg_rule->power_rule;
4989
4990                 nl_reg_rule = nla_nest_start(msg, i);
4991                 if (!nl_reg_rule)
4992                         goto nla_put_failure_rcu;
4993
4994                 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS,
4995                                 reg_rule->flags) ||
4996                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START,
4997                                 freq_range->start_freq_khz) ||
4998                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END,
4999                                 freq_range->end_freq_khz) ||
5000                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
5001                                 freq_range->max_bandwidth_khz) ||
5002                     nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
5003                                 power_rule->max_antenna_gain) ||
5004                     nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
5005                                 power_rule->max_eirp))
5006                         goto nla_put_failure_rcu;
5007
5008                 nla_nest_end(msg, nl_reg_rule);
5009         }
5010         rcu_read_unlock();
5011
5012         nla_nest_end(msg, nl_reg_rules);
5013
5014         genlmsg_end(msg, hdr);
5015         return genlmsg_reply(msg, info);
5016
5017 nla_put_failure_rcu:
5018         rcu_read_unlock();
5019 nla_put_failure:
5020         genlmsg_cancel(msg, hdr);
5021 put_failure:
5022         nlmsg_free(msg);
5023         return -EMSGSIZE;
5024 }
5025
5026 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
5027 {
5028         struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
5029         struct nlattr *nl_reg_rule;
5030         char *alpha2 = NULL;
5031         int rem_reg_rules = 0, r = 0;
5032         u32 num_rules = 0, rule_idx = 0, size_of_regd;
5033         u8 dfs_region = 0;
5034         struct ieee80211_regdomain *rd = NULL;
5035
5036         if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
5037                 return -EINVAL;
5038
5039         if (!info->attrs[NL80211_ATTR_REG_RULES])
5040                 return -EINVAL;
5041
5042         alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
5043
5044         if (info->attrs[NL80211_ATTR_DFS_REGION])
5045                 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]);
5046
5047         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
5048                             rem_reg_rules) {
5049                 num_rules++;
5050                 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
5051                         return -EINVAL;
5052         }
5053
5054         size_of_regd = sizeof(struct ieee80211_regdomain) +
5055                        num_rules * sizeof(struct ieee80211_reg_rule);
5056
5057         rd = kzalloc(size_of_regd, GFP_KERNEL);
5058         if (!rd)
5059                 return -ENOMEM;
5060
5061         rd->n_reg_rules = num_rules;
5062         rd->alpha2[0] = alpha2[0];
5063         rd->alpha2[1] = alpha2[1];
5064
5065         /*
5066          * Disable DFS master mode if the DFS region was
5067          * not supported or known on this kernel.
5068          */
5069         if (reg_supported_dfs_region(dfs_region))
5070                 rd->dfs_region = dfs_region;
5071
5072         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
5073                             rem_reg_rules) {
5074                 nla_parse(tb, NL80211_REG_RULE_ATTR_MAX,
5075                           nla_data(nl_reg_rule), nla_len(nl_reg_rule),
5076                           reg_rule_policy);
5077                 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
5078                 if (r)
5079                         goto bad_reg;
5080
5081                 rule_idx++;
5082
5083                 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
5084                         r = -EINVAL;
5085                         goto bad_reg;
5086                 }
5087         }
5088
5089         r = set_regdom(rd);
5090         /* set_regdom took ownership */
5091         rd = NULL;
5092
5093  bad_reg:
5094         kfree(rd);
5095         return r;
5096 }
5097
5098 static int validate_scan_freqs(struct nlattr *freqs)
5099 {
5100         struct nlattr *attr1, *attr2;
5101         int n_channels = 0, tmp1, tmp2;
5102
5103         nla_for_each_nested(attr1, freqs, tmp1) {
5104                 n_channels++;
5105                 /*
5106                  * Some hardware has a limited channel list for
5107                  * scanning, and it is pretty much nonsensical
5108                  * to scan for a channel twice, so disallow that
5109                  * and don't require drivers to check that the
5110                  * channel list they get isn't longer than what
5111                  * they can scan, as long as they can scan all
5112                  * the channels they registered at once.
5113                  */
5114                 nla_for_each_nested(attr2, freqs, tmp2)
5115                         if (attr1 != attr2 &&
5116                             nla_get_u32(attr1) == nla_get_u32(attr2))
5117                                 return 0;
5118         }
5119
5120         return n_channels;
5121 }
5122
5123 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
5124 {
5125         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5126         struct wireless_dev *wdev = info->user_ptr[1];
5127         struct cfg80211_scan_request *request;
5128         struct nlattr *attr;
5129         struct wiphy *wiphy;
5130         int err, tmp, n_ssids = 0, n_channels, i;
5131         size_t ie_len;
5132
5133         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
5134                 return -EINVAL;
5135
5136         wiphy = &rdev->wiphy;
5137
5138         if (!rdev->ops->scan)
5139                 return -EOPNOTSUPP;
5140
5141         if (rdev->scan_req) {
5142                 err = -EBUSY;
5143                 goto unlock;
5144         }
5145
5146         if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5147                 n_channels = validate_scan_freqs(
5148                                 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
5149                 if (!n_channels) {
5150                         err = -EINVAL;
5151                         goto unlock;
5152                 }
5153         } else {
5154                 enum ieee80211_band band;
5155                 n_channels = 0;
5156
5157                 for (band = 0; band < IEEE80211_NUM_BANDS; band++)
5158                         if (wiphy->bands[band])
5159                                 n_channels += wiphy->bands[band]->n_channels;
5160         }
5161
5162         if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
5163                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
5164                         n_ssids++;
5165
5166         if (n_ssids > wiphy->max_scan_ssids) {
5167                 err = -EINVAL;
5168                 goto unlock;
5169         }
5170
5171         if (info->attrs[NL80211_ATTR_IE])
5172                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5173         else
5174                 ie_len = 0;
5175
5176         if (ie_len > wiphy->max_scan_ie_len) {
5177                 err = -EINVAL;
5178                 goto unlock;
5179         }
5180
5181         request = kzalloc(sizeof(*request)
5182                         + sizeof(*request->ssids) * n_ssids
5183                         + sizeof(*request->channels) * n_channels
5184                         + ie_len, GFP_KERNEL);
5185         if (!request) {
5186                 err = -ENOMEM;
5187                 goto unlock;
5188         }
5189
5190         if (n_ssids)
5191                 request->ssids = (void *)&request->channels[n_channels];
5192         request->n_ssids = n_ssids;
5193         if (ie_len) {
5194                 if (request->ssids)
5195                         request->ie = (void *)(request->ssids + n_ssids);
5196                 else
5197                         request->ie = (void *)(request->channels + n_channels);
5198         }
5199
5200         i = 0;
5201         if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5202                 /* user specified, bail out if channel not found */
5203                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) {
5204                         struct ieee80211_channel *chan;
5205
5206                         chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
5207
5208                         if (!chan) {
5209                                 err = -EINVAL;
5210                                 goto out_free;
5211                         }
5212
5213                         /* ignore disabled channels */
5214                         if (chan->flags & IEEE80211_CHAN_DISABLED)
5215                                 continue;
5216
5217                         request->channels[i] = chan;
5218                         i++;
5219                 }
5220         } else {
5221                 enum ieee80211_band band;
5222
5223                 /* all channels */
5224                 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
5225                         int j;
5226                         if (!wiphy->bands[band])
5227                                 continue;
5228                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
5229                                 struct ieee80211_channel *chan;
5230
5231                                 chan = &wiphy->bands[band]->channels[j];
5232
5233                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
5234                                         continue;
5235
5236                                 request->channels[i] = chan;
5237                                 i++;
5238                         }
5239                 }
5240         }
5241
5242         if (!i) {
5243                 err = -EINVAL;
5244                 goto out_free;
5245         }
5246
5247         request->n_channels = i;
5248
5249         i = 0;
5250         if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
5251                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
5252                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
5253                                 err = -EINVAL;
5254                                 goto out_free;
5255                         }
5256                         request->ssids[i].ssid_len = nla_len(attr);
5257                         memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
5258                         i++;
5259                 }
5260         }
5261
5262         if (info->attrs[NL80211_ATTR_IE]) {
5263                 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5264                 memcpy((void *)request->ie,
5265                        nla_data(info->attrs[NL80211_ATTR_IE]),
5266                        request->ie_len);
5267         }
5268
5269         for (i = 0; i < IEEE80211_NUM_BANDS; i++)
5270                 if (wiphy->bands[i])
5271                         request->rates[i] =
5272                                 (1 << wiphy->bands[i]->n_bitrates) - 1;
5273
5274         if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
5275                 nla_for_each_nested(attr,
5276                                     info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
5277                                     tmp) {
5278                         enum ieee80211_band band = nla_type(attr);
5279
5280                         if (band < 0 || band >= IEEE80211_NUM_BANDS) {
5281                                 err = -EINVAL;
5282                                 goto out_free;
5283                         }
5284                         err = ieee80211_get_ratemask(wiphy->bands[band],
5285                                                      nla_data(attr),
5286                                                      nla_len(attr),
5287                                                      &request->rates[band]);
5288                         if (err)
5289                                 goto out_free;
5290                 }
5291         }
5292
5293         if (info->attrs[NL80211_ATTR_SCAN_FLAGS]) {
5294                 request->flags = nla_get_u32(
5295                         info->attrs[NL80211_ATTR_SCAN_FLAGS]);
5296                 if (((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
5297                      !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) ||
5298                     ((request->flags & NL80211_SCAN_FLAG_FLUSH) &&
5299                      !(wiphy->features & NL80211_FEATURE_SCAN_FLUSH))) {
5300                         err = -EOPNOTSUPP;
5301                         goto out_free;
5302                 }
5303         }
5304
5305         request->no_cck =
5306                 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
5307
5308         request->wdev = wdev;
5309         request->wiphy = &rdev->wiphy;
5310         request->scan_start = jiffies;
5311
5312         rdev->scan_req = request;
5313         err = rdev_scan(rdev, request);
5314
5315         if (!err) {
5316                 nl80211_send_scan_start(rdev, wdev);
5317                 if (wdev->netdev)
5318                         dev_hold(wdev->netdev);
5319         } else {
5320  out_free:
5321                 rdev->scan_req = NULL;
5322                 kfree(request);
5323         }
5324
5325  unlock:
5326         return err;
5327 }
5328
5329 static int nl80211_start_sched_scan(struct sk_buff *skb,
5330                                     struct genl_info *info)
5331 {
5332         struct cfg80211_sched_scan_request *request;
5333         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5334         struct net_device *dev = info->user_ptr[1];
5335         struct nlattr *attr;
5336         struct wiphy *wiphy;
5337         int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i;
5338         u32 interval;
5339         enum ieee80211_band band;
5340         size_t ie_len;
5341         struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
5342
5343         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
5344             !rdev->ops->sched_scan_start)
5345                 return -EOPNOTSUPP;
5346
5347         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
5348                 return -EINVAL;
5349
5350         if (!info->attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
5351                 return -EINVAL;
5352
5353         interval = nla_get_u32(info->attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
5354         if (interval == 0)
5355                 return -EINVAL;
5356
5357         wiphy = &rdev->wiphy;
5358
5359         if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5360                 n_channels = validate_scan_freqs(
5361                                 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
5362                 if (!n_channels)
5363                         return -EINVAL;
5364         } else {
5365                 n_channels = 0;
5366
5367                 for (band = 0; band < IEEE80211_NUM_BANDS; band++)
5368                         if (wiphy->bands[band])
5369                                 n_channels += wiphy->bands[band]->n_channels;
5370         }
5371
5372         if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
5373                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS],
5374                                     tmp)
5375                         n_ssids++;
5376
5377         if (n_ssids > wiphy->max_sched_scan_ssids)
5378                 return -EINVAL;
5379
5380         if (info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH])
5381                 nla_for_each_nested(attr,
5382                                     info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
5383                                     tmp)
5384                         n_match_sets++;
5385
5386         if (n_match_sets > wiphy->max_match_sets)
5387                 return -EINVAL;
5388
5389         if (info->attrs[NL80211_ATTR_IE])
5390                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5391         else
5392                 ie_len = 0;
5393
5394         if (ie_len > wiphy->max_sched_scan_ie_len)
5395                 return -EINVAL;
5396
5397         if (rdev->sched_scan_req) {
5398                 err = -EINPROGRESS;
5399                 goto out;
5400         }
5401
5402         request = kzalloc(sizeof(*request)
5403                         + sizeof(*request->ssids) * n_ssids
5404                         + sizeof(*request->match_sets) * n_match_sets
5405                         + sizeof(*request->channels) * n_channels
5406                         + ie_len, GFP_KERNEL);
5407         if (!request) {
5408                 err = -ENOMEM;
5409                 goto out;
5410         }
5411
5412         if (n_ssids)
5413                 request->ssids = (void *)&request->channels[n_channels];
5414         request->n_ssids = n_ssids;
5415         if (ie_len) {
5416                 if (request->ssids)
5417                         request->ie = (void *)(request->ssids + n_ssids);
5418                 else
5419                         request->ie = (void *)(request->channels + n_channels);
5420         }
5421
5422         if (n_match_sets) {
5423                 if (request->ie)
5424                         request->match_sets = (void *)(request->ie + ie_len);
5425                 else if (request->ssids)
5426                         request->match_sets =
5427                                 (void *)(request->ssids + n_ssids);
5428                 else
5429                         request->match_sets =
5430                                 (void *)(request->channels + n_channels);
5431         }
5432         request->n_match_sets = n_match_sets;
5433
5434         i = 0;
5435         if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5436                 /* user specified, bail out if channel not found */
5437                 nla_for_each_nested(attr,
5438                                     info->attrs[NL80211_ATTR_SCAN_FREQUENCIES],
5439                                     tmp) {
5440                         struct ieee80211_channel *chan;
5441
5442                         chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
5443
5444                         if (!chan) {
5445                                 err = -EINVAL;
5446                                 goto out_free;
5447                         }
5448
5449                         /* ignore disabled channels */
5450                         if (chan->flags & IEEE80211_CHAN_DISABLED)
5451                                 continue;
5452
5453                         request->channels[i] = chan;
5454                         i++;
5455                 }
5456         } else {
5457                 /* all channels */
5458                 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
5459                         int j;
5460                         if (!wiphy->bands[band])
5461                                 continue;
5462                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
5463                                 struct ieee80211_channel *chan;
5464
5465                                 chan = &wiphy->bands[band]->channels[j];
5466
5467                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
5468                                         continue;
5469
5470                                 request->channels[i] = chan;
5471                                 i++;
5472                         }
5473                 }
5474         }
5475
5476         if (!i) {
5477                 err = -EINVAL;
5478                 goto out_free;
5479         }
5480
5481         request->n_channels = i;
5482
5483         i = 0;
5484         if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
5485                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS],
5486                                     tmp) {
5487                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
5488                                 err = -EINVAL;
5489                                 goto out_free;
5490                         }
5491                         request->ssids[i].ssid_len = nla_len(attr);
5492                         memcpy(request->ssids[i].ssid, nla_data(attr),
5493                                nla_len(attr));
5494                         i++;
5495                 }
5496         }
5497
5498         i = 0;
5499         if (info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
5500                 nla_for_each_nested(attr,
5501                                     info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
5502                                     tmp) {
5503                         struct nlattr *ssid, *rssi;
5504
5505                         nla_parse(tb, NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
5506                                   nla_data(attr), nla_len(attr),
5507                                   nl80211_match_policy);
5508                         ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID];
5509                         if (ssid) {
5510                                 if (nla_len(ssid) > IEEE80211_MAX_SSID_LEN) {
5511                                         err = -EINVAL;
5512                                         goto out_free;
5513                                 }
5514                                 memcpy(request->match_sets[i].ssid.ssid,
5515                                        nla_data(ssid), nla_len(ssid));
5516                                 request->match_sets[i].ssid.ssid_len =
5517                                         nla_len(ssid);
5518                         }
5519                         rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
5520                         if (rssi)
5521                                 request->rssi_thold = nla_get_u32(rssi);
5522                         else
5523                                 request->rssi_thold =
5524                                                    NL80211_SCAN_RSSI_THOLD_OFF;
5525                         i++;
5526                 }
5527         }
5528
5529         if (info->attrs[NL80211_ATTR_IE]) {
5530                 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5531                 memcpy((void *)request->ie,
5532                        nla_data(info->attrs[NL80211_ATTR_IE]),
5533                        request->ie_len);
5534         }
5535
5536         if (info->attrs[NL80211_ATTR_SCAN_FLAGS]) {
5537                 request->flags = nla_get_u32(
5538                         info->attrs[NL80211_ATTR_SCAN_FLAGS]);
5539                 if (((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
5540                      !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) ||
5541                     ((request->flags & NL80211_SCAN_FLAG_FLUSH) &&
5542                      !(wiphy->features & NL80211_FEATURE_SCAN_FLUSH))) {
5543                         err = -EOPNOTSUPP;
5544                         goto out_free;
5545                 }
5546         }
5547
5548         request->dev = dev;
5549         request->wiphy = &rdev->wiphy;
5550         request->interval = interval;
5551         request->scan_start = jiffies;
5552
5553         err = rdev_sched_scan_start(rdev, dev, request);
5554         if (!err) {
5555                 rdev->sched_scan_req = request;
5556                 nl80211_send_sched_scan(rdev, dev,
5557                                         NL80211_CMD_START_SCHED_SCAN);
5558                 goto out;
5559         }
5560
5561 out_free:
5562         kfree(request);
5563 out:
5564         return err;
5565 }
5566
5567 static int nl80211_stop_sched_scan(struct sk_buff *skb,
5568                                    struct genl_info *info)
5569 {
5570         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5571
5572         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
5573             !rdev->ops->sched_scan_stop)
5574                 return -EOPNOTSUPP;
5575
5576         return __cfg80211_stop_sched_scan(rdev, false);
5577 }
5578
5579 static int nl80211_start_radar_detection(struct sk_buff *skb,
5580                                          struct genl_info *info)
5581 {
5582         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5583         struct net_device *dev = info->user_ptr[1];
5584         struct wireless_dev *wdev = dev->ieee80211_ptr;
5585         struct cfg80211_chan_def chandef;
5586         int err;
5587
5588         err = nl80211_parse_chandef(rdev, info, &chandef);
5589         if (err)
5590                 return err;
5591
5592         if (wdev->cac_started)
5593                 return -EBUSY;
5594
5595         err = cfg80211_chandef_dfs_required(wdev->wiphy, &chandef);
5596         if (err < 0)
5597                 return err;
5598
5599         if (err == 0)
5600                 return -EINVAL;
5601
5602         if (chandef.chan->dfs_state != NL80211_DFS_USABLE)
5603                 return -EINVAL;
5604
5605         if (!rdev->ops->start_radar_detection)
5606                 return -EOPNOTSUPP;
5607
5608         err = cfg80211_can_use_iftype_chan(rdev, wdev, wdev->iftype,
5609                                            chandef.chan, CHAN_MODE_SHARED,
5610                                            BIT(chandef.width));
5611         if (err)
5612                 return err;
5613
5614         err = rdev->ops->start_radar_detection(&rdev->wiphy, dev, &chandef);
5615         if (!err) {
5616                 wdev->channel = chandef.chan;
5617                 wdev->cac_started = true;
5618                 wdev->cac_start_time = jiffies;
5619         }
5620         return err;
5621 }
5622
5623 static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info)
5624 {
5625         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5626         struct net_device *dev = info->user_ptr[1];
5627         struct wireless_dev *wdev = dev->ieee80211_ptr;
5628         struct cfg80211_csa_settings params;
5629         /* csa_attrs is defined static to avoid waste of stack size - this
5630          * function is called under RTNL lock, so this should not be a problem.
5631          */
5632         static struct nlattr *csa_attrs[NL80211_ATTR_MAX+1];
5633         u8 radar_detect_width = 0;
5634         int err;
5635
5636         if (!rdev->ops->channel_switch ||
5637             !(rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH))
5638                 return -EOPNOTSUPP;
5639
5640         /* may add IBSS support later */
5641         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5642             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5643                 return -EOPNOTSUPP;
5644
5645         memset(&params, 0, sizeof(params));
5646
5647         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
5648             !info->attrs[NL80211_ATTR_CH_SWITCH_COUNT])
5649                 return -EINVAL;
5650
5651         /* only important for AP, IBSS and mesh create IEs internally */
5652         if (!info->attrs[NL80211_ATTR_CSA_IES])
5653                 return -EINVAL;
5654
5655         /* useless if AP is not running */
5656         if (!wdev->beacon_interval)
5657                 return -EINVAL;
5658
5659         params.count = nla_get_u32(info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]);
5660
5661         err = nl80211_parse_beacon(info->attrs, &params.beacon_after);
5662         if (err)
5663                 return err;
5664
5665         err = nla_parse_nested(csa_attrs, NL80211_ATTR_MAX,
5666                                info->attrs[NL80211_ATTR_CSA_IES],
5667                                nl80211_policy);
5668         if (err)
5669                 return err;
5670
5671         err = nl80211_parse_beacon(csa_attrs, &params.beacon_csa);
5672         if (err)
5673                 return err;
5674
5675         if (!csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON])
5676                 return -EINVAL;
5677
5678         params.counter_offset_beacon =
5679                 nla_get_u16(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
5680         if (params.counter_offset_beacon >= params.beacon_csa.tail_len)
5681                 return -EINVAL;
5682
5683         /* sanity check - counters should be the same */
5684         if (params.beacon_csa.tail[params.counter_offset_beacon] !=
5685             params.count)
5686                 return -EINVAL;
5687
5688         if (csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]) {
5689                 params.counter_offset_presp =
5690                         nla_get_u16(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
5691                 if (params.counter_offset_presp >=
5692                     params.beacon_csa.probe_resp_len)
5693                         return -EINVAL;
5694
5695                 if (params.beacon_csa.probe_resp[params.counter_offset_presp] !=
5696                     params.count)
5697                         return -EINVAL;
5698         }
5699
5700         err = nl80211_parse_chandef(rdev, info, &params.chandef);
5701         if (err)
5702                 return err;
5703
5704         if (!cfg80211_reg_can_beacon(&rdev->wiphy, &params.chandef))
5705                 return -EINVAL;
5706
5707         err = cfg80211_chandef_dfs_required(wdev->wiphy, &params.chandef);
5708         if (err < 0) {
5709                 return err;
5710         } else if (err) {
5711                 radar_detect_width = BIT(params.chandef.width);
5712                 params.radar_required = true;
5713         }
5714
5715         err = cfg80211_can_use_iftype_chan(rdev, wdev, wdev->iftype,
5716                                            params.chandef.chan,
5717                                            CHAN_MODE_SHARED,
5718                                            radar_detect_width);
5719         if (err)
5720                 return err;
5721
5722         if (info->attrs[NL80211_ATTR_CH_SWITCH_BLOCK_TX])
5723                 params.block_tx = true;
5724
5725         return rdev_channel_switch(rdev, dev, &params);
5726 }
5727
5728 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
5729                             u32 seq, int flags,
5730                             struct cfg80211_registered_device *rdev,
5731                             struct wireless_dev *wdev,
5732                             struct cfg80211_internal_bss *intbss)
5733 {
5734         struct cfg80211_bss *res = &intbss->pub;
5735         const struct cfg80211_bss_ies *ies;
5736         void *hdr;
5737         struct nlattr *bss;
5738         bool tsf = false;
5739
5740         ASSERT_WDEV_LOCK(wdev);
5741
5742         hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
5743                              NL80211_CMD_NEW_SCAN_RESULTS);
5744         if (!hdr)
5745                 return -1;
5746
5747         genl_dump_check_consistent(cb, hdr, &nl80211_fam);
5748
5749         if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation))
5750                 goto nla_put_failure;
5751         if (wdev->netdev &&
5752             nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex))
5753                 goto nla_put_failure;
5754         if (nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
5755                 goto nla_put_failure;
5756
5757         bss = nla_nest_start(msg, NL80211_ATTR_BSS);
5758         if (!bss)
5759                 goto nla_put_failure;
5760         if ((!is_zero_ether_addr(res->bssid) &&
5761              nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid)))
5762                 goto nla_put_failure;
5763
5764         rcu_read_lock();
5765         ies = rcu_dereference(res->ies);
5766         if (ies) {
5767                 if (nla_put_u64(msg, NL80211_BSS_TSF, ies->tsf))
5768                         goto fail_unlock_rcu;
5769                 tsf = true;
5770                 if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS,
5771                                         ies->len, ies->data))
5772                         goto fail_unlock_rcu;
5773         }
5774         ies = rcu_dereference(res->beacon_ies);
5775         if (ies) {
5776                 if (!tsf && nla_put_u64(msg, NL80211_BSS_TSF, ies->tsf))
5777                         goto fail_unlock_rcu;
5778                 if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES,
5779                                         ies->len, ies->data))
5780                         goto fail_unlock_rcu;
5781         }
5782         rcu_read_unlock();
5783
5784         if (res->beacon_interval &&
5785             nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval))
5786                 goto nla_put_failure;
5787         if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) ||
5788             nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) ||
5789             nla_put_u32(msg, NL80211_BSS_CHAN_WIDTH, res->scan_width) ||
5790             nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO,
5791                         jiffies_to_msecs(jiffies - intbss->ts)))
5792                 goto nla_put_failure;
5793
5794         switch (rdev->wiphy.signal_type) {
5795         case CFG80211_SIGNAL_TYPE_MBM:
5796                 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal))
5797                         goto nla_put_failure;
5798                 break;
5799         case CFG80211_SIGNAL_TYPE_UNSPEC:
5800                 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal))
5801                         goto nla_put_failure;
5802                 break;
5803         default:
5804                 break;
5805         }
5806
5807         switch (wdev->iftype) {
5808         case NL80211_IFTYPE_P2P_CLIENT:
5809         case NL80211_IFTYPE_STATION:
5810                 if (intbss == wdev->current_bss &&
5811                     nla_put_u32(msg, NL80211_BSS_STATUS,
5812                                 NL80211_BSS_STATUS_ASSOCIATED))
5813                         goto nla_put_failure;
5814                 break;
5815         case NL80211_IFTYPE_ADHOC:
5816                 if (intbss == wdev->current_bss &&
5817                     nla_put_u32(msg, NL80211_BSS_STATUS,
5818                                 NL80211_BSS_STATUS_IBSS_JOINED))
5819                         goto nla_put_failure;
5820                 break;
5821         default:
5822                 break;
5823         }
5824
5825         nla_nest_end(msg, bss);
5826
5827         return genlmsg_end(msg, hdr);
5828
5829  fail_unlock_rcu:
5830         rcu_read_unlock();
5831  nla_put_failure:
5832         genlmsg_cancel(msg, hdr);
5833         return -EMSGSIZE;
5834 }
5835
5836 static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb)
5837 {
5838         struct cfg80211_registered_device *rdev;
5839         struct cfg80211_internal_bss *scan;
5840         struct wireless_dev *wdev;
5841         int start = cb->args[2], idx = 0;
5842         int err;
5843
5844         err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
5845         if (err)
5846                 return err;
5847
5848         wdev_lock(wdev);
5849         spin_lock_bh(&rdev->bss_lock);
5850         cfg80211_bss_expire(rdev);
5851
5852         cb->seq = rdev->bss_generation;
5853
5854         list_for_each_entry(scan, &rdev->bss_list, list) {
5855                 if (++idx <= start)
5856                         continue;
5857                 if (nl80211_send_bss(skb, cb,
5858                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
5859                                 rdev, wdev, scan) < 0) {
5860                         idx--;
5861                         break;
5862                 }
5863         }
5864
5865         spin_unlock_bh(&rdev->bss_lock);
5866         wdev_unlock(wdev);
5867
5868         cb->args[2] = idx;
5869         nl80211_finish_wdev_dump(rdev);
5870
5871         return skb->len;
5872 }
5873
5874 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq,
5875                                 int flags, struct net_device *dev,
5876                                 struct survey_info *survey)
5877 {
5878         void *hdr;
5879         struct nlattr *infoattr;
5880
5881         hdr = nl80211hdr_put(msg, portid, seq, flags,
5882                              NL80211_CMD_NEW_SURVEY_RESULTS);
5883         if (!hdr)
5884                 return -ENOMEM;
5885
5886         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
5887                 goto nla_put_failure;
5888
5889         infoattr = nla_nest_start(msg, NL80211_ATTR_SURVEY_INFO);
5890         if (!infoattr)
5891                 goto nla_put_failure;
5892
5893         if (nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY,
5894                         survey->channel->center_freq))
5895                 goto nla_put_failure;
5896
5897         if ((survey->filled & SURVEY_INFO_NOISE_DBM) &&
5898             nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise))
5899                 goto nla_put_failure;
5900         if ((survey->filled & SURVEY_INFO_IN_USE) &&
5901             nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE))
5902                 goto nla_put_failure;
5903         if ((survey->filled & SURVEY_INFO_CHANNEL_TIME) &&
5904             nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME,
5905                         survey->channel_time))
5906                 goto nla_put_failure;
5907         if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_BUSY) &&
5908             nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_BUSY,
5909                         survey->channel_time_busy))
5910                 goto nla_put_failure;
5911         if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_EXT_BUSY) &&
5912             nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_EXT_BUSY,
5913                         survey->channel_time_ext_busy))
5914                 goto nla_put_failure;
5915         if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_RX) &&
5916             nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_RX,
5917                         survey->channel_time_rx))
5918                 goto nla_put_failure;
5919         if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_TX) &&
5920             nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_TX,
5921                         survey->channel_time_tx))
5922                 goto nla_put_failure;
5923
5924         nla_nest_end(msg, infoattr);
5925
5926         return genlmsg_end(msg, hdr);
5927
5928  nla_put_failure:
5929         genlmsg_cancel(msg, hdr);
5930         return -EMSGSIZE;
5931 }
5932
5933 static int nl80211_dump_survey(struct sk_buff *skb,
5934                         struct netlink_callback *cb)
5935 {
5936         struct survey_info survey;
5937         struct cfg80211_registered_device *dev;
5938         struct wireless_dev *wdev;
5939         int survey_idx = cb->args[2];
5940         int res;
5941
5942         res = nl80211_prepare_wdev_dump(skb, cb, &dev, &wdev);
5943         if (res)
5944                 return res;
5945
5946         if (!wdev->netdev) {
5947                 res = -EINVAL;
5948                 goto out_err;
5949         }
5950
5951         if (!dev->ops->dump_survey) {
5952                 res = -EOPNOTSUPP;
5953                 goto out_err;
5954         }
5955
5956         while (1) {
5957                 struct ieee80211_channel *chan;
5958
5959                 res = rdev_dump_survey(dev, wdev->netdev, survey_idx, &survey);
5960                 if (res == -ENOENT)
5961                         break;
5962                 if (res)
5963                         goto out_err;
5964
5965                 /* Survey without a channel doesn't make sense */
5966                 if (!survey.channel) {
5967                         res = -EINVAL;
5968                         goto out;
5969                 }
5970
5971                 chan = ieee80211_get_channel(&dev->wiphy,
5972                                              survey.channel->center_freq);
5973                 if (!chan || chan->flags & IEEE80211_CHAN_DISABLED) {
5974                         survey_idx++;
5975                         continue;
5976                 }
5977
5978                 if (nl80211_send_survey(skb,
5979                                 NETLINK_CB(cb->skb).portid,
5980                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
5981                                 wdev->netdev, &survey) < 0)
5982                         goto out;
5983                 survey_idx++;
5984         }
5985
5986  out:
5987         cb->args[2] = survey_idx;
5988         res = skb->len;
5989  out_err:
5990         nl80211_finish_wdev_dump(dev);
5991         return res;
5992 }
5993
5994 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
5995 {
5996         return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
5997                                   NL80211_WPA_VERSION_2));
5998 }
5999
6000 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
6001 {
6002         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6003         struct net_device *dev = info->user_ptr[1];
6004         struct ieee80211_channel *chan;
6005         const u8 *bssid, *ssid, *ie = NULL, *sae_data = NULL;
6006         int err, ssid_len, ie_len = 0, sae_data_len = 0;
6007         enum nl80211_auth_type auth_type;
6008         struct key_parse key;
6009         bool local_state_change;
6010
6011         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6012                 return -EINVAL;
6013
6014         if (!info->attrs[NL80211_ATTR_MAC])
6015                 return -EINVAL;
6016
6017         if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
6018                 return -EINVAL;
6019
6020         if (!info->attrs[NL80211_ATTR_SSID])
6021                 return -EINVAL;
6022
6023         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
6024                 return -EINVAL;
6025
6026         err = nl80211_parse_key(info, &key);
6027         if (err)
6028                 return err;
6029
6030         if (key.idx >= 0) {
6031                 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
6032                         return -EINVAL;
6033                 if (!key.p.key || !key.p.key_len)
6034                         return -EINVAL;
6035                 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
6036                      key.p.key_len != WLAN_KEY_LEN_WEP40) &&
6037                     (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
6038                      key.p.key_len != WLAN_KEY_LEN_WEP104))
6039                         return -EINVAL;
6040                 if (key.idx > 4)
6041                         return -EINVAL;
6042         } else {
6043                 key.p.key_len = 0;
6044                 key.p.key = NULL;
6045         }
6046
6047         if (key.idx >= 0) {
6048                 int i;
6049                 bool ok = false;
6050                 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
6051                         if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
6052                                 ok = true;
6053                                 break;
6054                         }
6055                 }
6056                 if (!ok)
6057                         return -EINVAL;
6058         }
6059
6060         if (!rdev->ops->auth)
6061                 return -EOPNOTSUPP;
6062
6063         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6064             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6065                 return -EOPNOTSUPP;
6066
6067         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6068         chan = ieee80211_get_channel(&rdev->wiphy,
6069                 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
6070         if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED))
6071                 return -EINVAL;
6072
6073         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
6074         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
6075
6076         if (info->attrs[NL80211_ATTR_IE]) {
6077                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6078                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6079         }
6080
6081         auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
6082         if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE))
6083                 return -EINVAL;
6084
6085         if (auth_type == NL80211_AUTHTYPE_SAE &&
6086             !info->attrs[NL80211_ATTR_SAE_DATA])
6087                 return -EINVAL;
6088
6089         if (info->attrs[NL80211_ATTR_SAE_DATA]) {
6090                 if (auth_type != NL80211_AUTHTYPE_SAE)
6091                         return -EINVAL;
6092                 sae_data = nla_data(info->attrs[NL80211_ATTR_SAE_DATA]);
6093                 sae_data_len = nla_len(info->attrs[NL80211_ATTR_SAE_DATA]);
6094                 /* need to include at least Auth Transaction and Status Code */
6095                 if (sae_data_len < 4)
6096                         return -EINVAL;
6097         }
6098
6099         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
6100
6101         /*
6102          * Since we no longer track auth state, ignore
6103          * requests to only change local state.
6104          */
6105         if (local_state_change)
6106                 return 0;
6107
6108         wdev_lock(dev->ieee80211_ptr);
6109         err = cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
6110                                  ssid, ssid_len, ie, ie_len,
6111                                  key.p.key, key.p.key_len, key.idx,
6112                                  sae_data, sae_data_len);
6113         wdev_unlock(dev->ieee80211_ptr);
6114         return err;
6115 }
6116
6117 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
6118                                    struct genl_info *info,
6119                                    struct cfg80211_crypto_settings *settings,
6120                                    int cipher_limit)
6121 {
6122         memset(settings, 0, sizeof(*settings));
6123
6124         settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
6125
6126         if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
6127                 u16 proto;
6128                 proto = nla_get_u16(
6129                         info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
6130                 settings->control_port_ethertype = cpu_to_be16(proto);
6131                 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
6132                     proto != ETH_P_PAE)
6133                         return -EINVAL;
6134                 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
6135                         settings->control_port_no_encrypt = true;
6136         } else
6137                 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
6138
6139         if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
6140                 void *data;
6141                 int len, i;
6142
6143                 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
6144                 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
6145                 settings->n_ciphers_pairwise = len / sizeof(u32);
6146
6147                 if (len % sizeof(u32))
6148                         return -EINVAL;
6149
6150                 if (settings->n_ciphers_pairwise > cipher_limit)
6151                         return -EINVAL;
6152
6153                 memcpy(settings->ciphers_pairwise, data, len);
6154
6155                 for (i = 0; i < settings->n_ciphers_pairwise; i++)
6156                         if (!cfg80211_supported_cipher_suite(
6157                                         &rdev->wiphy,
6158                                         settings->ciphers_pairwise[i]))
6159                                 return -EINVAL;
6160         }
6161
6162         if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
6163                 settings->cipher_group =
6164                         nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
6165                 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
6166                                                      settings->cipher_group))
6167                         return -EINVAL;
6168         }
6169
6170         if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
6171                 settings->wpa_versions =
6172                         nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
6173                 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
6174                         return -EINVAL;
6175         }
6176
6177         if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
6178                 void *data;
6179                 int len;
6180
6181                 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
6182                 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
6183                 settings->n_akm_suites = len / sizeof(u32);
6184
6185                 if (len % sizeof(u32))
6186                         return -EINVAL;
6187
6188                 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES)
6189                         return -EINVAL;
6190
6191                 memcpy(settings->akm_suites, data, len);
6192         }
6193
6194         return 0;
6195 }
6196
6197 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
6198 {
6199         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6200         struct net_device *dev = info->user_ptr[1];
6201         struct ieee80211_channel *chan;
6202         struct cfg80211_assoc_request req = {};
6203         const u8 *bssid, *ssid;
6204         int err, ssid_len = 0;
6205
6206         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6207                 return -EINVAL;
6208
6209         if (!info->attrs[NL80211_ATTR_MAC] ||
6210             !info->attrs[NL80211_ATTR_SSID] ||
6211             !info->attrs[NL80211_ATTR_WIPHY_FREQ])
6212                 return -EINVAL;
6213
6214         if (!rdev->ops->assoc)
6215                 return -EOPNOTSUPP;
6216
6217         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6218             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6219                 return -EOPNOTSUPP;
6220
6221         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6222
6223         chan = ieee80211_get_channel(&rdev->wiphy,
6224                 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
6225         if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED))
6226                 return -EINVAL;
6227
6228         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
6229         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
6230
6231         if (info->attrs[NL80211_ATTR_IE]) {
6232                 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6233                 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6234         }
6235
6236         if (info->attrs[NL80211_ATTR_USE_MFP]) {
6237                 enum nl80211_mfp mfp =
6238                         nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
6239                 if (mfp == NL80211_MFP_REQUIRED)
6240                         req.use_mfp = true;
6241                 else if (mfp != NL80211_MFP_NO)
6242                         return -EINVAL;
6243         }
6244
6245         if (info->attrs[NL80211_ATTR_PREV_BSSID])
6246                 req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
6247
6248         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
6249                 req.flags |= ASSOC_REQ_DISABLE_HT;
6250
6251         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
6252                 memcpy(&req.ht_capa_mask,
6253                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
6254                        sizeof(req.ht_capa_mask));
6255
6256         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
6257                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
6258                         return -EINVAL;
6259                 memcpy(&req.ht_capa,
6260                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
6261                        sizeof(req.ht_capa));
6262         }
6263
6264         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
6265                 req.flags |= ASSOC_REQ_DISABLE_VHT;
6266
6267         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
6268                 memcpy(&req.vht_capa_mask,
6269                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
6270                        sizeof(req.vht_capa_mask));
6271
6272         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
6273                 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
6274                         return -EINVAL;
6275                 memcpy(&req.vht_capa,
6276                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
6277                        sizeof(req.vht_capa));
6278         }
6279
6280         err = nl80211_crypto_settings(rdev, info, &req.crypto, 1);
6281         if (!err) {
6282                 wdev_lock(dev->ieee80211_ptr);
6283                 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid,
6284                                           ssid, ssid_len, &req);
6285                 wdev_unlock(dev->ieee80211_ptr);
6286         }
6287
6288         return err;
6289 }
6290
6291 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
6292 {
6293         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6294         struct net_device *dev = info->user_ptr[1];
6295         const u8 *ie = NULL, *bssid;
6296         int ie_len = 0, err;
6297         u16 reason_code;
6298         bool local_state_change;
6299
6300         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6301                 return -EINVAL;
6302
6303         if (!info->attrs[NL80211_ATTR_MAC])
6304                 return -EINVAL;
6305
6306         if (!info->attrs[NL80211_ATTR_REASON_CODE])
6307                 return -EINVAL;
6308
6309         if (!rdev->ops->deauth)
6310                 return -EOPNOTSUPP;
6311
6312         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6313             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6314                 return -EOPNOTSUPP;
6315
6316         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6317
6318         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
6319         if (reason_code == 0) {
6320                 /* Reason Code 0 is reserved */
6321                 return -EINVAL;
6322         }
6323
6324         if (info->attrs[NL80211_ATTR_IE]) {
6325                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6326                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6327         }
6328
6329         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
6330
6331         wdev_lock(dev->ieee80211_ptr);
6332         err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
6333                                    local_state_change);
6334         wdev_unlock(dev->ieee80211_ptr);
6335         return err;
6336 }
6337
6338 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
6339 {
6340         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6341         struct net_device *dev = info->user_ptr[1];
6342         const u8 *ie = NULL, *bssid;
6343         int ie_len = 0, err;
6344         u16 reason_code;
6345         bool local_state_change;
6346
6347         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6348                 return -EINVAL;
6349
6350         if (!info->attrs[NL80211_ATTR_MAC])
6351                 return -EINVAL;
6352
6353         if (!info->attrs[NL80211_ATTR_REASON_CODE])
6354                 return -EINVAL;
6355
6356         if (!rdev->ops->disassoc)
6357                 return -EOPNOTSUPP;
6358
6359         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6360             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6361                 return -EOPNOTSUPP;
6362
6363         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6364
6365         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
6366         if (reason_code == 0) {
6367                 /* Reason Code 0 is reserved */
6368                 return -EINVAL;
6369         }
6370
6371         if (info->attrs[NL80211_ATTR_IE]) {
6372                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6373                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6374         }
6375
6376         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
6377
6378         wdev_lock(dev->ieee80211_ptr);
6379         err = cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
6380                                      local_state_change);
6381         wdev_unlock(dev->ieee80211_ptr);
6382         return err;
6383 }
6384
6385 static bool
6386 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
6387                          int mcast_rate[IEEE80211_NUM_BANDS],
6388                          int rateval)
6389 {
6390         struct wiphy *wiphy = &rdev->wiphy;
6391         bool found = false;
6392         int band, i;
6393
6394         for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
6395                 struct ieee80211_supported_band *sband;
6396
6397                 sband = wiphy->bands[band];
6398                 if (!sband)
6399                         continue;
6400
6401                 for (i = 0; i < sband->n_bitrates; i++) {
6402                         if (sband->bitrates[i].bitrate == rateval) {
6403                                 mcast_rate[band] = i + 1;
6404                                 found = true;
6405                                 break;
6406                         }
6407                 }
6408         }
6409
6410         return found;
6411 }
6412
6413 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
6414 {
6415         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6416         struct net_device *dev = info->user_ptr[1];
6417         struct cfg80211_ibss_params ibss;
6418         struct wiphy *wiphy;
6419         struct cfg80211_cached_keys *connkeys = NULL;
6420         int err;
6421
6422         memset(&ibss, 0, sizeof(ibss));
6423
6424         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6425                 return -EINVAL;
6426
6427         if (!info->attrs[NL80211_ATTR_SSID] ||
6428             !nla_len(info->attrs[NL80211_ATTR_SSID]))
6429                 return -EINVAL;
6430
6431         ibss.beacon_interval = 100;
6432
6433         if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
6434                 ibss.beacon_interval =
6435                         nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
6436                 if (ibss.beacon_interval < 1 || ibss.beacon_interval > 10000)
6437                         return -EINVAL;
6438         }
6439
6440         if (!rdev->ops->join_ibss)
6441                 return -EOPNOTSUPP;
6442
6443         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
6444                 return -EOPNOTSUPP;
6445
6446         wiphy = &rdev->wiphy;
6447
6448         if (info->attrs[NL80211_ATTR_MAC]) {
6449                 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6450
6451                 if (!is_valid_ether_addr(ibss.bssid))
6452                         return -EINVAL;
6453         }
6454         ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
6455         ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
6456
6457         if (info->attrs[NL80211_ATTR_IE]) {
6458                 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6459                 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6460         }
6461
6462         err = nl80211_parse_chandef(rdev, info, &ibss.chandef);
6463         if (err)
6464                 return err;
6465
6466         if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef))
6467                 return -EINVAL;
6468
6469         switch (ibss.chandef.width) {
6470         case NL80211_CHAN_WIDTH_5:
6471         case NL80211_CHAN_WIDTH_10:
6472         case NL80211_CHAN_WIDTH_20_NOHT:
6473                 break;
6474         case NL80211_CHAN_WIDTH_20:
6475         case NL80211_CHAN_WIDTH_40:
6476                 if (rdev->wiphy.features & NL80211_FEATURE_HT_IBSS)
6477                         break;
6478         default:
6479                 return -EINVAL;
6480         }
6481
6482         ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
6483         ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
6484
6485         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
6486                 u8 *rates =
6487                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
6488                 int n_rates =
6489                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
6490                 struct ieee80211_supported_band *sband =
6491                         wiphy->bands[ibss.chandef.chan->band];
6492
6493                 err = ieee80211_get_ratemask(sband, rates, n_rates,
6494                                              &ibss.basic_rates);
6495                 if (err)
6496                         return err;
6497         }
6498
6499         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
6500                 memcpy(&ibss.ht_capa_mask,
6501                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
6502                        sizeof(ibss.ht_capa_mask));
6503
6504         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
6505                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
6506                         return -EINVAL;
6507                 memcpy(&ibss.ht_capa,
6508                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
6509                        sizeof(ibss.ht_capa));
6510         }
6511
6512         if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
6513             !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
6514                         nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
6515                 return -EINVAL;
6516
6517         if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
6518                 bool no_ht = false;
6519
6520                 connkeys = nl80211_parse_connkeys(rdev,
6521                                           info->attrs[NL80211_ATTR_KEYS],
6522                                           &no_ht);
6523                 if (IS_ERR(connkeys))
6524                         return PTR_ERR(connkeys);
6525
6526                 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) &&
6527                     no_ht) {
6528                         kfree(connkeys);
6529                         return -EINVAL;
6530                 }
6531         }
6532
6533         ibss.control_port =
6534                 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]);
6535
6536         err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
6537         if (err)
6538                 kfree(connkeys);
6539         return err;
6540 }
6541
6542 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
6543 {
6544         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6545         struct net_device *dev = info->user_ptr[1];
6546
6547         if (!rdev->ops->leave_ibss)
6548                 return -EOPNOTSUPP;
6549
6550         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
6551                 return -EOPNOTSUPP;
6552
6553         return cfg80211_leave_ibss(rdev, dev, false);
6554 }
6555
6556 static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info)
6557 {
6558         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6559         struct net_device *dev = info->user_ptr[1];
6560         int mcast_rate[IEEE80211_NUM_BANDS];
6561         u32 nla_rate;
6562         int err;
6563
6564         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
6565             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6566                 return -EOPNOTSUPP;
6567
6568         if (!rdev->ops->set_mcast_rate)
6569                 return -EOPNOTSUPP;
6570
6571         memset(mcast_rate, 0, sizeof(mcast_rate));
6572
6573         if (!info->attrs[NL80211_ATTR_MCAST_RATE])
6574                 return -EINVAL;
6575
6576         nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]);
6577         if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate))
6578                 return -EINVAL;
6579
6580         err = rdev->ops->set_mcast_rate(&rdev->wiphy, dev, mcast_rate);
6581
6582         return err;
6583 }
6584
6585
6586 #ifdef CONFIG_NL80211_TESTMODE
6587 static struct genl_multicast_group nl80211_testmode_mcgrp = {
6588         .name = "testmode",
6589 };
6590
6591 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
6592 {
6593         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6594         struct wireless_dev *wdev =
6595                 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
6596         int err;
6597
6598         if (!rdev->ops->testmode_cmd)
6599                 return -EOPNOTSUPP;
6600
6601         if (IS_ERR(wdev)) {
6602                 err = PTR_ERR(wdev);
6603                 if (err != -EINVAL)
6604                         return err;
6605                 wdev = NULL;
6606         } else if (wdev->wiphy != &rdev->wiphy) {
6607                 return -EINVAL;
6608         }
6609
6610         if (!info->attrs[NL80211_ATTR_TESTDATA])
6611                 return -EINVAL;
6612
6613         rdev->testmode_info = info;
6614         err = rdev_testmode_cmd(rdev, wdev,
6615                                 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
6616                                 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
6617         rdev->testmode_info = NULL;
6618
6619         return err;
6620 }
6621
6622 static int nl80211_testmode_dump(struct sk_buff *skb,
6623                                  struct netlink_callback *cb)
6624 {
6625         struct cfg80211_registered_device *rdev;
6626         int err;
6627         long phy_idx;
6628         void *data = NULL;
6629         int data_len = 0;
6630
6631         rtnl_lock();
6632
6633         if (cb->args[0]) {
6634                 /*
6635                  * 0 is a valid index, but not valid for args[0],
6636                  * so we need to offset by 1.
6637                  */
6638                 phy_idx = cb->args[0] - 1;
6639         } else {
6640                 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
6641                                   nl80211_fam.attrbuf, nl80211_fam.maxattr,
6642                                   nl80211_policy);
6643                 if (err)
6644                         goto out_err;
6645
6646                 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk),
6647                                                   nl80211_fam.attrbuf);
6648                 if (IS_ERR(rdev)) {
6649                         err = PTR_ERR(rdev);
6650                         goto out_err;
6651                 }
6652                 phy_idx = rdev->wiphy_idx;
6653                 rdev = NULL;
6654
6655                 if (nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA])
6656                         cb->args[1] =
6657                                 (long)nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA];
6658         }
6659
6660         if (cb->args[1]) {
6661                 data = nla_data((void *)cb->args[1]);
6662                 data_len = nla_len((void *)cb->args[1]);
6663         }
6664
6665         rdev = cfg80211_rdev_by_wiphy_idx(phy_idx);
6666         if (!rdev) {
6667                 err = -ENOENT;
6668                 goto out_err;
6669         }
6670
6671         if (!rdev->ops->testmode_dump) {
6672                 err = -EOPNOTSUPP;
6673                 goto out_err;
6674         }
6675
6676         while (1) {
6677                 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
6678                                            cb->nlh->nlmsg_seq, NLM_F_MULTI,
6679                                            NL80211_CMD_TESTMODE);
6680                 struct nlattr *tmdata;
6681
6682                 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) {
6683                         genlmsg_cancel(skb, hdr);
6684                         break;
6685                 }
6686
6687                 tmdata = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
6688                 if (!tmdata) {
6689                         genlmsg_cancel(skb, hdr);
6690                         break;
6691                 }
6692                 err = rdev_testmode_dump(rdev, skb, cb, data, data_len);
6693                 nla_nest_end(skb, tmdata);
6694
6695                 if (err == -ENOBUFS || err == -ENOENT) {
6696                         genlmsg_cancel(skb, hdr);
6697                         break;
6698                 } else if (err) {
6699                         genlmsg_cancel(skb, hdr);
6700                         goto out_err;
6701                 }
6702
6703                 genlmsg_end(skb, hdr);
6704         }
6705
6706         err = skb->len;
6707         /* see above */
6708         cb->args[0] = phy_idx + 1;
6709  out_err:
6710         rtnl_unlock();
6711         return err;
6712 }
6713
6714 static struct sk_buff *
6715 __cfg80211_testmode_alloc_skb(struct cfg80211_registered_device *rdev,
6716                               int approxlen, u32 portid, u32 seq, gfp_t gfp)
6717 {
6718         struct sk_buff *skb;
6719         void *hdr;
6720         struct nlattr *data;
6721
6722         skb = nlmsg_new(approxlen + 100, gfp);
6723         if (!skb)
6724                 return NULL;
6725
6726         hdr = nl80211hdr_put(skb, portid, seq, 0, NL80211_CMD_TESTMODE);
6727         if (!hdr) {
6728                 kfree_skb(skb);
6729                 return NULL;
6730         }
6731
6732         if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
6733                 goto nla_put_failure;
6734         data = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
6735
6736         ((void **)skb->cb)[0] = rdev;
6737         ((void **)skb->cb)[1] = hdr;
6738         ((void **)skb->cb)[2] = data;
6739
6740         return skb;
6741
6742  nla_put_failure:
6743         kfree_skb(skb);
6744         return NULL;
6745 }
6746
6747 struct sk_buff *cfg80211_testmode_alloc_reply_skb(struct wiphy *wiphy,
6748                                                   int approxlen)
6749 {
6750         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
6751
6752         if (WARN_ON(!rdev->testmode_info))
6753                 return NULL;
6754
6755         return __cfg80211_testmode_alloc_skb(rdev, approxlen,
6756                                 rdev->testmode_info->snd_portid,
6757                                 rdev->testmode_info->snd_seq,
6758                                 GFP_KERNEL);
6759 }
6760 EXPORT_SYMBOL(cfg80211_testmode_alloc_reply_skb);
6761
6762 int cfg80211_testmode_reply(struct sk_buff *skb)
6763 {
6764         struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
6765         void *hdr = ((void **)skb->cb)[1];
6766         struct nlattr *data = ((void **)skb->cb)[2];
6767
6768         if (WARN_ON(!rdev->testmode_info)) {
6769                 kfree_skb(skb);
6770                 return -EINVAL;
6771         }
6772
6773         nla_nest_end(skb, data);
6774         genlmsg_end(skb, hdr);
6775         return genlmsg_reply(skb, rdev->testmode_info);
6776 }
6777 EXPORT_SYMBOL(cfg80211_testmode_reply);
6778
6779 struct sk_buff *cfg80211_testmode_alloc_event_skb(struct wiphy *wiphy,
6780                                                   int approxlen, gfp_t gfp)
6781 {
6782         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
6783
6784         return __cfg80211_testmode_alloc_skb(rdev, approxlen, 0, 0, gfp);
6785 }
6786 EXPORT_SYMBOL(cfg80211_testmode_alloc_event_skb);
6787
6788 void cfg80211_testmode_event(struct sk_buff *skb, gfp_t gfp)
6789 {
6790         void *hdr = ((void **)skb->cb)[1];
6791         struct nlattr *data = ((void **)skb->cb)[2];
6792
6793         nla_nest_end(skb, data);
6794         genlmsg_end(skb, hdr);
6795         genlmsg_multicast(skb, 0, nl80211_testmode_mcgrp.id, gfp);
6796 }
6797 EXPORT_SYMBOL(cfg80211_testmode_event);
6798 #endif
6799
6800 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
6801 {
6802         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6803         struct net_device *dev = info->user_ptr[1];
6804         struct cfg80211_connect_params connect;
6805         struct wiphy *wiphy;
6806         struct cfg80211_cached_keys *connkeys = NULL;
6807         int err;
6808
6809         memset(&connect, 0, sizeof(connect));
6810
6811         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6812                 return -EINVAL;
6813
6814         if (!info->attrs[NL80211_ATTR_SSID] ||
6815             !nla_len(info->attrs[NL80211_ATTR_SSID]))
6816                 return -EINVAL;
6817
6818         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
6819                 connect.auth_type =
6820                         nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
6821                 if (!nl80211_valid_auth_type(rdev, connect.auth_type,
6822                                              NL80211_CMD_CONNECT))
6823                         return -EINVAL;
6824         } else
6825                 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
6826
6827         connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
6828
6829         err = nl80211_crypto_settings(rdev, info, &connect.crypto,
6830                                       NL80211_MAX_NR_CIPHER_SUITES);
6831         if (err)
6832                 return err;
6833
6834         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6835             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6836                 return -EOPNOTSUPP;
6837
6838         wiphy = &rdev->wiphy;
6839
6840         connect.bg_scan_period = -1;
6841         if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] &&
6842                 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) {
6843                 connect.bg_scan_period =
6844                         nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]);
6845         }
6846
6847         if (info->attrs[NL80211_ATTR_MAC])
6848                 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6849         connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
6850         connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
6851
6852         if (info->attrs[NL80211_ATTR_IE]) {
6853                 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6854                 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6855         }
6856
6857         if (info->attrs[NL80211_ATTR_USE_MFP]) {
6858                 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
6859                 if (connect.mfp != NL80211_MFP_REQUIRED &&
6860                     connect.mfp != NL80211_MFP_NO)
6861                         return -EINVAL;
6862         } else {
6863                 connect.mfp = NL80211_MFP_NO;
6864         }
6865
6866         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
6867                 connect.channel =
6868                         ieee80211_get_channel(wiphy,
6869                             nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
6870                 if (!connect.channel ||
6871                     connect.channel->flags & IEEE80211_CHAN_DISABLED)
6872                         return -EINVAL;
6873         }
6874
6875         if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
6876                 connkeys = nl80211_parse_connkeys(rdev,
6877                                           info->attrs[NL80211_ATTR_KEYS], NULL);
6878                 if (IS_ERR(connkeys))
6879                         return PTR_ERR(connkeys);
6880         }
6881
6882         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
6883                 connect.flags |= ASSOC_REQ_DISABLE_HT;
6884
6885         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
6886                 memcpy(&connect.ht_capa_mask,
6887                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
6888                        sizeof(connect.ht_capa_mask));
6889
6890         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
6891                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) {
6892                         kfree(connkeys);
6893                         return -EINVAL;
6894                 }
6895                 memcpy(&connect.ht_capa,
6896                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
6897                        sizeof(connect.ht_capa));
6898         }
6899
6900         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
6901                 connect.flags |= ASSOC_REQ_DISABLE_VHT;
6902
6903         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
6904                 memcpy(&connect.vht_capa_mask,
6905                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
6906                        sizeof(connect.vht_capa_mask));
6907
6908         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
6909                 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) {
6910                         kfree(connkeys);
6911                         return -EINVAL;
6912                 }
6913                 memcpy(&connect.vht_capa,
6914                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
6915                        sizeof(connect.vht_capa));
6916         }
6917
6918         wdev_lock(dev->ieee80211_ptr);
6919         err = cfg80211_connect(rdev, dev, &connect, connkeys, NULL);
6920         wdev_unlock(dev->ieee80211_ptr);
6921         if (err)
6922                 kfree(connkeys);
6923         return err;
6924 }
6925
6926 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
6927 {
6928         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6929         struct net_device *dev = info->user_ptr[1];
6930         u16 reason;
6931         int ret;
6932
6933         if (!info->attrs[NL80211_ATTR_REASON_CODE])
6934                 reason = WLAN_REASON_DEAUTH_LEAVING;
6935         else
6936                 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
6937
6938         if (reason == 0)
6939                 return -EINVAL;
6940
6941         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6942             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6943                 return -EOPNOTSUPP;
6944
6945         wdev_lock(dev->ieee80211_ptr);
6946         ret = cfg80211_disconnect(rdev, dev, reason, true);
6947         wdev_unlock(dev->ieee80211_ptr);
6948         return ret;
6949 }
6950
6951 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
6952 {
6953         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6954         struct net *net;
6955         int err;
6956         u32 pid;
6957
6958         if (!info->attrs[NL80211_ATTR_PID])
6959                 return -EINVAL;
6960
6961         pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
6962
6963         net = get_net_ns_by_pid(pid);
6964         if (IS_ERR(net))
6965                 return PTR_ERR(net);
6966
6967         err = 0;
6968
6969         /* check if anything to do */
6970         if (!net_eq(wiphy_net(&rdev->wiphy), net))
6971                 err = cfg80211_switch_netns(rdev, net);
6972
6973         put_net(net);
6974         return err;
6975 }
6976
6977 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
6978 {
6979         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6980         int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
6981                         struct cfg80211_pmksa *pmksa) = NULL;
6982         struct net_device *dev = info->user_ptr[1];
6983         struct cfg80211_pmksa pmksa;
6984
6985         memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
6986
6987         if (!info->attrs[NL80211_ATTR_MAC])
6988                 return -EINVAL;
6989
6990         if (!info->attrs[NL80211_ATTR_PMKID])
6991                 return -EINVAL;
6992
6993         pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
6994         pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6995
6996         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6997             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6998                 return -EOPNOTSUPP;
6999
7000         switch (info->genlhdr->cmd) {
7001         case NL80211_CMD_SET_PMKSA:
7002                 rdev_ops = rdev->ops->set_pmksa;
7003                 break;
7004         case NL80211_CMD_DEL_PMKSA:
7005                 rdev_ops = rdev->ops->del_pmksa;
7006                 break;
7007         default:
7008                 WARN_ON(1);
7009                 break;
7010         }
7011
7012         if (!rdev_ops)
7013                 return -EOPNOTSUPP;
7014
7015         return rdev_ops(&rdev->wiphy, dev, &pmksa);
7016 }
7017
7018 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
7019 {
7020         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7021         struct net_device *dev = info->user_ptr[1];
7022
7023         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7024             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7025                 return -EOPNOTSUPP;
7026
7027         if (!rdev->ops->flush_pmksa)
7028                 return -EOPNOTSUPP;
7029
7030         return rdev_flush_pmksa(rdev, dev);
7031 }
7032
7033 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
7034 {
7035         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7036         struct net_device *dev = info->user_ptr[1];
7037         u8 action_code, dialog_token;
7038         u16 status_code;
7039         u8 *peer;
7040
7041         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
7042             !rdev->ops->tdls_mgmt)
7043                 return -EOPNOTSUPP;
7044
7045         if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
7046             !info->attrs[NL80211_ATTR_STATUS_CODE] ||
7047             !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
7048             !info->attrs[NL80211_ATTR_IE] ||
7049             !info->attrs[NL80211_ATTR_MAC])
7050                 return -EINVAL;
7051
7052         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
7053         action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
7054         status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
7055         dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
7056
7057         return rdev_tdls_mgmt(rdev, dev, peer, action_code,
7058                               dialog_token, status_code,
7059                               nla_data(info->attrs[NL80211_ATTR_IE]),
7060                               nla_len(info->attrs[NL80211_ATTR_IE]));
7061 }
7062
7063 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
7064 {
7065         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7066         struct net_device *dev = info->user_ptr[1];
7067         enum nl80211_tdls_operation operation;
7068         u8 *peer;
7069
7070         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
7071             !rdev->ops->tdls_oper)
7072                 return -EOPNOTSUPP;
7073
7074         if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
7075             !info->attrs[NL80211_ATTR_MAC])
7076                 return -EINVAL;
7077
7078         operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
7079         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
7080
7081         return rdev_tdls_oper(rdev, dev, peer, operation);
7082 }
7083
7084 static int nl80211_remain_on_channel(struct sk_buff *skb,
7085                                      struct genl_info *info)
7086 {
7087         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7088         struct wireless_dev *wdev = info->user_ptr[1];
7089         struct cfg80211_chan_def chandef;
7090         struct sk_buff *msg;
7091         void *hdr;
7092         u64 cookie;
7093         u32 duration;
7094         int err;
7095
7096         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
7097             !info->attrs[NL80211_ATTR_DURATION])
7098                 return -EINVAL;
7099
7100         duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
7101
7102         if (!rdev->ops->remain_on_channel ||
7103             !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL))
7104                 return -EOPNOTSUPP;
7105
7106         /*
7107          * We should be on that channel for at least a minimum amount of
7108          * time (10ms) but no longer than the driver supports.
7109          */
7110         if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
7111             duration > rdev->wiphy.max_remain_on_channel_duration)
7112                 return -EINVAL;
7113
7114         err = nl80211_parse_chandef(rdev, info, &chandef);
7115         if (err)
7116                 return err;
7117
7118         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7119         if (!msg)
7120                 return -ENOMEM;
7121
7122         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7123                              NL80211_CMD_REMAIN_ON_CHANNEL);
7124
7125         if (IS_ERR(hdr)) {
7126                 err = PTR_ERR(hdr);
7127                 goto free_msg;
7128         }
7129
7130         err = rdev_remain_on_channel(rdev, wdev, chandef.chan,
7131                                      duration, &cookie);
7132
7133         if (err)
7134                 goto free_msg;
7135
7136         if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
7137                 goto nla_put_failure;
7138
7139         genlmsg_end(msg, hdr);
7140
7141         return genlmsg_reply(msg, info);
7142
7143  nla_put_failure:
7144         err = -ENOBUFS;
7145  free_msg:
7146         nlmsg_free(msg);
7147         return err;
7148 }
7149
7150 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
7151                                             struct genl_info *info)
7152 {
7153         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7154         struct wireless_dev *wdev = info->user_ptr[1];
7155         u64 cookie;
7156
7157         if (!info->attrs[NL80211_ATTR_COOKIE])
7158                 return -EINVAL;
7159
7160         if (!rdev->ops->cancel_remain_on_channel)
7161                 return -EOPNOTSUPP;
7162
7163         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
7164
7165         return rdev_cancel_remain_on_channel(rdev, wdev, cookie);
7166 }
7167
7168 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
7169                            u8 *rates, u8 rates_len)
7170 {
7171         u8 i;
7172         u32 mask = 0;
7173
7174         for (i = 0; i < rates_len; i++) {
7175                 int rate = (rates[i] & 0x7f) * 5;
7176                 int ridx;
7177                 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
7178                         struct ieee80211_rate *srate =
7179                                 &sband->bitrates[ridx];
7180                         if (rate == srate->bitrate) {
7181                                 mask |= 1 << ridx;
7182                                 break;
7183                         }
7184                 }
7185                 if (ridx == sband->n_bitrates)
7186                         return 0; /* rate not found */
7187         }
7188
7189         return mask;
7190 }
7191
7192 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband,
7193                                u8 *rates, u8 rates_len,
7194                                u8 mcs[IEEE80211_HT_MCS_MASK_LEN])
7195 {
7196         u8 i;
7197
7198         memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN);
7199
7200         for (i = 0; i < rates_len; i++) {
7201                 int ridx, rbit;
7202
7203                 ridx = rates[i] / 8;
7204                 rbit = BIT(rates[i] % 8);
7205
7206                 /* check validity */
7207                 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN))
7208                         return false;
7209
7210                 /* check availability */
7211                 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit)
7212                         mcs[ridx] |= rbit;
7213                 else
7214                         return false;
7215         }
7216
7217         return true;
7218 }
7219
7220 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
7221         [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
7222                                     .len = NL80211_MAX_SUPP_RATES },
7223         [NL80211_TXRATE_MCS] = { .type = NLA_BINARY,
7224                                  .len = NL80211_MAX_SUPP_HT_RATES },
7225 };
7226
7227 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
7228                                        struct genl_info *info)
7229 {
7230         struct nlattr *tb[NL80211_TXRATE_MAX + 1];
7231         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7232         struct cfg80211_bitrate_mask mask;
7233         int rem, i;
7234         struct net_device *dev = info->user_ptr[1];
7235         struct nlattr *tx_rates;
7236         struct ieee80211_supported_band *sband;
7237
7238         if (info->attrs[NL80211_ATTR_TX_RATES] == NULL)
7239                 return -EINVAL;
7240
7241         if (!rdev->ops->set_bitrate_mask)
7242                 return -EOPNOTSUPP;
7243
7244         memset(&mask, 0, sizeof(mask));
7245         /* Default to all rates enabled */
7246         for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
7247                 sband = rdev->wiphy.bands[i];
7248                 mask.control[i].legacy =
7249                         sband ? (1 << sband->n_bitrates) - 1 : 0;
7250                 if (sband)
7251                         memcpy(mask.control[i].mcs,
7252                                sband->ht_cap.mcs.rx_mask,
7253                                sizeof(mask.control[i].mcs));
7254                 else
7255                         memset(mask.control[i].mcs, 0,
7256                                sizeof(mask.control[i].mcs));
7257         }
7258
7259         /*
7260          * The nested attribute uses enum nl80211_band as the index. This maps
7261          * directly to the enum ieee80211_band values used in cfg80211.
7262          */
7263         BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8);
7264         nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem)
7265         {
7266                 enum ieee80211_band band = nla_type(tx_rates);
7267                 if (band < 0 || band >= IEEE80211_NUM_BANDS)
7268                         return -EINVAL;
7269                 sband = rdev->wiphy.bands[band];
7270                 if (sband == NULL)
7271                         return -EINVAL;
7272                 nla_parse(tb, NL80211_TXRATE_MAX, nla_data(tx_rates),
7273                           nla_len(tx_rates), nl80211_txattr_policy);
7274                 if (tb[NL80211_TXRATE_LEGACY]) {
7275                         mask.control[band].legacy = rateset_to_mask(
7276                                 sband,
7277                                 nla_data(tb[NL80211_TXRATE_LEGACY]),
7278                                 nla_len(tb[NL80211_TXRATE_LEGACY]));
7279                         if ((mask.control[band].legacy == 0) &&
7280                             nla_len(tb[NL80211_TXRATE_LEGACY]))
7281                                 return -EINVAL;
7282                 }
7283                 if (tb[NL80211_TXRATE_MCS]) {
7284                         if (!ht_rateset_to_mask(
7285                                         sband,
7286                                         nla_data(tb[NL80211_TXRATE_MCS]),
7287                                         nla_len(tb[NL80211_TXRATE_MCS]),
7288                                         mask.control[band].mcs))
7289                                 return -EINVAL;
7290                 }
7291
7292                 if (mask.control[band].legacy == 0) {
7293                         /* don't allow empty legacy rates if HT
7294                          * is not even supported. */
7295                         if (!rdev->wiphy.bands[band]->ht_cap.ht_supported)
7296                                 return -EINVAL;
7297
7298                         for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
7299                                 if (mask.control[band].mcs[i])
7300                                         break;
7301
7302                         /* legacy and mcs rates may not be both empty */
7303                         if (i == IEEE80211_HT_MCS_MASK_LEN)
7304                                 return -EINVAL;
7305                 }
7306         }
7307
7308         return rdev_set_bitrate_mask(rdev, dev, NULL, &mask);
7309 }
7310
7311 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
7312 {
7313         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7314         struct wireless_dev *wdev = info->user_ptr[1];
7315         u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
7316
7317         if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
7318                 return -EINVAL;
7319
7320         if (info->attrs[NL80211_ATTR_FRAME_TYPE])
7321                 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
7322
7323         switch (wdev->iftype) {
7324         case NL80211_IFTYPE_STATION:
7325         case NL80211_IFTYPE_ADHOC:
7326         case NL80211_IFTYPE_P2P_CLIENT:
7327         case NL80211_IFTYPE_AP:
7328         case NL80211_IFTYPE_AP_VLAN:
7329         case NL80211_IFTYPE_MESH_POINT:
7330         case NL80211_IFTYPE_P2P_GO:
7331         case NL80211_IFTYPE_P2P_DEVICE:
7332                 break;
7333         default:
7334                 return -EOPNOTSUPP;
7335         }
7336
7337         /* not much point in registering if we can't reply */
7338         if (!rdev->ops->mgmt_tx)
7339                 return -EOPNOTSUPP;
7340
7341         return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type,
7342                         nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
7343                         nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]));
7344 }
7345
7346 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
7347 {
7348         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7349         struct wireless_dev *wdev = info->user_ptr[1];
7350         struct cfg80211_chan_def chandef;
7351         int err;
7352         void *hdr = NULL;
7353         u64 cookie;
7354         struct sk_buff *msg = NULL;
7355         unsigned int wait = 0;
7356         bool offchan, no_cck, dont_wait_for_ack;
7357
7358         dont_wait_for_ack = info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK];
7359
7360         if (!info->attrs[NL80211_ATTR_FRAME])
7361                 return -EINVAL;
7362
7363         if (!rdev->ops->mgmt_tx)
7364                 return -EOPNOTSUPP;
7365
7366         switch (wdev->iftype) {
7367         case NL80211_IFTYPE_P2P_DEVICE:
7368                 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
7369                         return -EINVAL;
7370         case NL80211_IFTYPE_STATION:
7371         case NL80211_IFTYPE_ADHOC:
7372         case NL80211_IFTYPE_P2P_CLIENT:
7373         case NL80211_IFTYPE_AP:
7374         case NL80211_IFTYPE_AP_VLAN:
7375         case NL80211_IFTYPE_MESH_POINT:
7376         case NL80211_IFTYPE_P2P_GO:
7377                 break;
7378         default:
7379                 return -EOPNOTSUPP;
7380         }
7381
7382         if (info->attrs[NL80211_ATTR_DURATION]) {
7383                 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
7384                         return -EINVAL;
7385                 wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
7386
7387                 /*
7388                  * We should wait on the channel for at least a minimum amount
7389                  * of time (10ms) but no longer than the driver supports.
7390                  */
7391                 if (wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
7392                     wait > rdev->wiphy.max_remain_on_channel_duration)
7393                         return -EINVAL;
7394
7395         }
7396
7397         offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
7398
7399         if (offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
7400                 return -EINVAL;
7401
7402         no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
7403
7404         /* get the channel if any has been specified, otherwise pass NULL to
7405          * the driver. The latter will use the current one
7406          */
7407         chandef.chan = NULL;
7408         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
7409                 err = nl80211_parse_chandef(rdev, info, &chandef);
7410                 if (err)
7411                         return err;
7412         }
7413
7414         if (!chandef.chan && offchan)
7415                 return -EINVAL;
7416
7417         if (!dont_wait_for_ack) {
7418                 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7419                 if (!msg)
7420                         return -ENOMEM;
7421
7422                 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7423                                      NL80211_CMD_FRAME);
7424
7425                 if (IS_ERR(hdr)) {
7426                         err = PTR_ERR(hdr);
7427                         goto free_msg;
7428                 }
7429         }
7430
7431         err = cfg80211_mlme_mgmt_tx(rdev, wdev, chandef.chan, offchan, wait,
7432                                     nla_data(info->attrs[NL80211_ATTR_FRAME]),
7433                                     nla_len(info->attrs[NL80211_ATTR_FRAME]),
7434                                     no_cck, dont_wait_for_ack, &cookie);
7435         if (err)
7436                 goto free_msg;
7437
7438         if (msg) {
7439                 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
7440                         goto nla_put_failure;
7441
7442                 genlmsg_end(msg, hdr);
7443                 return genlmsg_reply(msg, info);
7444         }
7445
7446         return 0;
7447
7448  nla_put_failure:
7449         err = -ENOBUFS;
7450  free_msg:
7451         nlmsg_free(msg);
7452         return err;
7453 }
7454
7455 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
7456 {
7457         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7458         struct wireless_dev *wdev = info->user_ptr[1];
7459         u64 cookie;
7460
7461         if (!info->attrs[NL80211_ATTR_COOKIE])
7462                 return -EINVAL;
7463
7464         if (!rdev->ops->mgmt_tx_cancel_wait)
7465                 return -EOPNOTSUPP;
7466
7467         switch (wdev->iftype) {
7468         case NL80211_IFTYPE_STATION:
7469         case NL80211_IFTYPE_ADHOC:
7470         case NL80211_IFTYPE_P2P_CLIENT:
7471         case NL80211_IFTYPE_AP:
7472         case NL80211_IFTYPE_AP_VLAN:
7473         case NL80211_IFTYPE_P2P_GO:
7474         case NL80211_IFTYPE_P2P_DEVICE:
7475                 break;
7476         default:
7477                 return -EOPNOTSUPP;
7478         }
7479
7480         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
7481
7482         return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie);
7483 }
7484
7485 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
7486 {
7487         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7488         struct wireless_dev *wdev;
7489         struct net_device *dev = info->user_ptr[1];
7490         u8 ps_state;
7491         bool state;
7492         int err;
7493
7494         if (!info->attrs[NL80211_ATTR_PS_STATE])
7495                 return -EINVAL;
7496
7497         ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
7498
7499         if (ps_state != NL80211_PS_DISABLED && ps_state != NL80211_PS_ENABLED)
7500                 return -EINVAL;
7501
7502         wdev = dev->ieee80211_ptr;
7503
7504         if (!rdev->ops->set_power_mgmt)
7505                 return -EOPNOTSUPP;
7506
7507         state = (ps_state == NL80211_PS_ENABLED) ? true : false;
7508
7509         if (state == wdev->ps)
7510                 return 0;
7511
7512         err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout);
7513         if (!err)
7514                 wdev->ps = state;
7515         return err;
7516 }
7517
7518 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
7519 {
7520         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7521         enum nl80211_ps_state ps_state;
7522         struct wireless_dev *wdev;
7523         struct net_device *dev = info->user_ptr[1];
7524         struct sk_buff *msg;
7525         void *hdr;
7526         int err;
7527
7528         wdev = dev->ieee80211_ptr;
7529
7530         if (!rdev->ops->set_power_mgmt)
7531                 return -EOPNOTSUPP;
7532
7533         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7534         if (!msg)
7535                 return -ENOMEM;
7536
7537         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7538                              NL80211_CMD_GET_POWER_SAVE);
7539         if (!hdr) {
7540                 err = -ENOBUFS;
7541                 goto free_msg;
7542         }
7543
7544         if (wdev->ps)
7545                 ps_state = NL80211_PS_ENABLED;
7546         else
7547                 ps_state = NL80211_PS_DISABLED;
7548
7549         if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state))
7550                 goto nla_put_failure;
7551
7552         genlmsg_end(msg, hdr);
7553         return genlmsg_reply(msg, info);
7554
7555  nla_put_failure:
7556         err = -ENOBUFS;
7557  free_msg:
7558         nlmsg_free(msg);
7559         return err;
7560 }
7561
7562 static struct nla_policy
7563 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] __read_mostly = {
7564         [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 },
7565         [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
7566         [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
7567         [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 },
7568         [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 },
7569         [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 },
7570 };
7571
7572 static int nl80211_set_cqm_txe(struct genl_info *info,
7573                                u32 rate, u32 pkts, u32 intvl)
7574 {
7575         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7576         struct net_device *dev = info->user_ptr[1];
7577         struct wireless_dev *wdev = dev->ieee80211_ptr;
7578
7579         if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL)
7580                 return -EINVAL;
7581
7582         if (!rdev->ops->set_cqm_txe_config)
7583                 return -EOPNOTSUPP;
7584
7585         if (wdev->iftype != NL80211_IFTYPE_STATION &&
7586             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
7587                 return -EOPNOTSUPP;
7588
7589         return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl);
7590 }
7591
7592 static int nl80211_set_cqm_rssi(struct genl_info *info,
7593                                 s32 threshold, u32 hysteresis)
7594 {
7595         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7596         struct net_device *dev = info->user_ptr[1];
7597         struct wireless_dev *wdev = dev->ieee80211_ptr;
7598
7599         if (threshold > 0)
7600                 return -EINVAL;
7601
7602         /* disabling - hysteresis should also be zero then */
7603         if (threshold == 0)
7604                 hysteresis = 0;
7605
7606         if (!rdev->ops->set_cqm_rssi_config)
7607                 return -EOPNOTSUPP;
7608
7609         if (wdev->iftype != NL80211_IFTYPE_STATION &&
7610             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
7611                 return -EOPNOTSUPP;
7612
7613         return rdev_set_cqm_rssi_config(rdev, dev, threshold, hysteresis);
7614 }
7615
7616 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
7617 {
7618         struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
7619         struct nlattr *cqm;
7620         int err;
7621
7622         cqm = info->attrs[NL80211_ATTR_CQM];
7623         if (!cqm)
7624                 return -EINVAL;
7625
7626         err = nla_parse_nested(attrs, NL80211_ATTR_CQM_MAX, cqm,
7627                                nl80211_attr_cqm_policy);
7628         if (err)
7629                 return err;
7630
7631         if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
7632             attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
7633                 s32 threshold = nla_get_s32(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
7634                 u32 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
7635
7636                 return nl80211_set_cqm_rssi(info, threshold, hysteresis);
7637         }
7638
7639         if (attrs[NL80211_ATTR_CQM_TXE_RATE] &&
7640             attrs[NL80211_ATTR_CQM_TXE_PKTS] &&
7641             attrs[NL80211_ATTR_CQM_TXE_INTVL]) {
7642                 u32 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]);
7643                 u32 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]);
7644                 u32 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]);
7645
7646                 return nl80211_set_cqm_txe(info, rate, pkts, intvl);
7647         }
7648
7649         return -EINVAL;
7650 }
7651
7652 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
7653 {
7654         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7655         struct net_device *dev = info->user_ptr[1];
7656         struct mesh_config cfg;
7657         struct mesh_setup setup;
7658         int err;
7659
7660         /* start with default */
7661         memcpy(&cfg, &default_mesh_config, sizeof(cfg));
7662         memcpy(&setup, &default_mesh_setup, sizeof(setup));
7663
7664         if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
7665                 /* and parse parameters if given */
7666                 err = nl80211_parse_mesh_config(info, &cfg, NULL);
7667                 if (err)
7668                         return err;
7669         }
7670
7671         if (!info->attrs[NL80211_ATTR_MESH_ID] ||
7672             !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
7673                 return -EINVAL;
7674
7675         setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
7676         setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
7677
7678         if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
7679             !nl80211_parse_mcast_rate(rdev, setup.mcast_rate,
7680                             nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
7681                         return -EINVAL;
7682
7683         if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
7684                 setup.beacon_interval =
7685                         nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
7686                 if (setup.beacon_interval < 10 ||
7687                     setup.beacon_interval > 10000)
7688                         return -EINVAL;
7689         }
7690
7691         if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
7692                 setup.dtim_period =
7693                         nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
7694                 if (setup.dtim_period < 1 || setup.dtim_period > 100)
7695                         return -EINVAL;
7696         }
7697
7698         if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
7699                 /* parse additional setup parameters if given */
7700                 err = nl80211_parse_mesh_setup(info, &setup);
7701                 if (err)
7702                         return err;
7703         }
7704
7705         if (setup.user_mpm)
7706                 cfg.auto_open_plinks = false;
7707
7708         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
7709                 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
7710                 if (err)
7711                         return err;
7712         } else {
7713                 /* cfg80211_join_mesh() will sort it out */
7714                 setup.chandef.chan = NULL;
7715         }
7716
7717         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
7718                 u8 *rates = nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
7719                 int n_rates =
7720                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
7721                 struct ieee80211_supported_band *sband;
7722
7723                 if (!setup.chandef.chan)
7724                         return -EINVAL;
7725
7726                 sband = rdev->wiphy.bands[setup.chandef.chan->band];
7727
7728                 err = ieee80211_get_ratemask(sband, rates, n_rates,
7729                                              &setup.basic_rates);
7730                 if (err)
7731                         return err;
7732         }
7733
7734         return cfg80211_join_mesh(rdev, dev, &setup, &cfg);
7735 }
7736
7737 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
7738 {
7739         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7740         struct net_device *dev = info->user_ptr[1];
7741
7742         return cfg80211_leave_mesh(rdev, dev);
7743 }
7744
7745 #ifdef CONFIG_PM
7746 static int nl80211_send_wowlan_patterns(struct sk_buff *msg,
7747                                         struct cfg80211_registered_device *rdev)
7748 {
7749         struct cfg80211_wowlan *wowlan = rdev->wiphy.wowlan_config;
7750         struct nlattr *nl_pats, *nl_pat;
7751         int i, pat_len;
7752
7753         if (!wowlan->n_patterns)
7754                 return 0;
7755
7756         nl_pats = nla_nest_start(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN);
7757         if (!nl_pats)
7758                 return -ENOBUFS;
7759
7760         for (i = 0; i < wowlan->n_patterns; i++) {
7761                 nl_pat = nla_nest_start(msg, i + 1);
7762                 if (!nl_pat)
7763                         return -ENOBUFS;
7764                 pat_len = wowlan->patterns[i].pattern_len;
7765                 if (nla_put(msg, NL80211_PKTPAT_MASK, DIV_ROUND_UP(pat_len, 8),
7766                             wowlan->patterns[i].mask) ||
7767                     nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
7768                             wowlan->patterns[i].pattern) ||
7769                     nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
7770                                 wowlan->patterns[i].pkt_offset))
7771                         return -ENOBUFS;
7772                 nla_nest_end(msg, nl_pat);
7773         }
7774         nla_nest_end(msg, nl_pats);
7775
7776         return 0;
7777 }
7778
7779 static int nl80211_send_wowlan_tcp(struct sk_buff *msg,
7780                                    struct cfg80211_wowlan_tcp *tcp)
7781 {
7782         struct nlattr *nl_tcp;
7783
7784         if (!tcp)
7785                 return 0;
7786
7787         nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
7788         if (!nl_tcp)
7789                 return -ENOBUFS;
7790
7791         if (nla_put_be32(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) ||
7792             nla_put_be32(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) ||
7793             nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) ||
7794             nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) ||
7795             nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) ||
7796             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
7797                     tcp->payload_len, tcp->payload) ||
7798             nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
7799                         tcp->data_interval) ||
7800             nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
7801                     tcp->wake_len, tcp->wake_data) ||
7802             nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK,
7803                     DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask))
7804                 return -ENOBUFS;
7805
7806         if (tcp->payload_seq.len &&
7807             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ,
7808                     sizeof(tcp->payload_seq), &tcp->payload_seq))
7809                 return -ENOBUFS;
7810
7811         if (tcp->payload_tok.len &&
7812             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
7813                     sizeof(tcp->payload_tok) + tcp->tokens_size,
7814                     &tcp->payload_tok))
7815                 return -ENOBUFS;
7816
7817         nla_nest_end(msg, nl_tcp);
7818
7819         return 0;
7820 }
7821
7822 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
7823 {
7824         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7825         struct sk_buff *msg;
7826         void *hdr;
7827         u32 size = NLMSG_DEFAULT_SIZE;
7828
7829         if (!rdev->wiphy.wowlan)
7830                 return -EOPNOTSUPP;
7831
7832         if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) {
7833                 /* adjust size to have room for all the data */
7834                 size += rdev->wiphy.wowlan_config->tcp->tokens_size +
7835                         rdev->wiphy.wowlan_config->tcp->payload_len +
7836                         rdev->wiphy.wowlan_config->tcp->wake_len +
7837                         rdev->wiphy.wowlan_config->tcp->wake_len / 8;
7838         }
7839
7840         msg = nlmsg_new(size, GFP_KERNEL);
7841         if (!msg)
7842                 return -ENOMEM;
7843
7844         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7845                              NL80211_CMD_GET_WOWLAN);
7846         if (!hdr)
7847                 goto nla_put_failure;
7848
7849         if (rdev->wiphy.wowlan_config) {
7850                 struct nlattr *nl_wowlan;
7851
7852                 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
7853                 if (!nl_wowlan)
7854                         goto nla_put_failure;
7855
7856                 if ((rdev->wiphy.wowlan_config->any &&
7857                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
7858                     (rdev->wiphy.wowlan_config->disconnect &&
7859                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
7860                     (rdev->wiphy.wowlan_config->magic_pkt &&
7861                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
7862                     (rdev->wiphy.wowlan_config->gtk_rekey_failure &&
7863                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
7864                     (rdev->wiphy.wowlan_config->eap_identity_req &&
7865                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
7866                     (rdev->wiphy.wowlan_config->four_way_handshake &&
7867                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
7868                     (rdev->wiphy.wowlan_config->rfkill_release &&
7869                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
7870                         goto nla_put_failure;
7871
7872                 if (nl80211_send_wowlan_patterns(msg, rdev))
7873                         goto nla_put_failure;
7874
7875                 if (nl80211_send_wowlan_tcp(msg,
7876                                             rdev->wiphy.wowlan_config->tcp))
7877                         goto nla_put_failure;
7878
7879                 nla_nest_end(msg, nl_wowlan);
7880         }
7881
7882         genlmsg_end(msg, hdr);
7883         return genlmsg_reply(msg, info);
7884
7885 nla_put_failure:
7886         nlmsg_free(msg);
7887         return -ENOBUFS;
7888 }
7889
7890 static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev,
7891                                     struct nlattr *attr,
7892                                     struct cfg80211_wowlan *trig)
7893 {
7894         struct nlattr *tb[NUM_NL80211_WOWLAN_TCP];
7895         struct cfg80211_wowlan_tcp *cfg;
7896         struct nl80211_wowlan_tcp_data_token *tok = NULL;
7897         struct nl80211_wowlan_tcp_data_seq *seq = NULL;
7898         u32 size;
7899         u32 data_size, wake_size, tokens_size = 0, wake_mask_size;
7900         int err, port;
7901
7902         if (!rdev->wiphy.wowlan->tcp)
7903                 return -EINVAL;
7904
7905         err = nla_parse(tb, MAX_NL80211_WOWLAN_TCP,
7906                         nla_data(attr), nla_len(attr),
7907                         nl80211_wowlan_tcp_policy);
7908         if (err)
7909                 return err;
7910
7911         if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] ||
7912             !tb[NL80211_WOWLAN_TCP_DST_IPV4] ||
7913             !tb[NL80211_WOWLAN_TCP_DST_MAC] ||
7914             !tb[NL80211_WOWLAN_TCP_DST_PORT] ||
7915             !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] ||
7916             !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] ||
7917             !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] ||
7918             !tb[NL80211_WOWLAN_TCP_WAKE_MASK])
7919                 return -EINVAL;
7920
7921         data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]);
7922         if (data_size > rdev->wiphy.wowlan->tcp->data_payload_max)
7923                 return -EINVAL;
7924
7925         if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) >
7926                         rdev->wiphy.wowlan->tcp->data_interval_max ||
7927             nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0)
7928                 return -EINVAL;
7929
7930         wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]);
7931         if (wake_size > rdev->wiphy.wowlan->tcp->wake_payload_max)
7932                 return -EINVAL;
7933
7934         wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]);
7935         if (wake_mask_size != DIV_ROUND_UP(wake_size, 8))
7936                 return -EINVAL;
7937
7938         if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) {
7939                 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
7940
7941                 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
7942                 tokens_size = tokln - sizeof(*tok);
7943
7944                 if (!tok->len || tokens_size % tok->len)
7945                         return -EINVAL;
7946                 if (!rdev->wiphy.wowlan->tcp->tok)
7947                         return -EINVAL;
7948                 if (tok->len > rdev->wiphy.wowlan->tcp->tok->max_len)
7949                         return -EINVAL;
7950                 if (tok->len < rdev->wiphy.wowlan->tcp->tok->min_len)
7951                         return -EINVAL;
7952                 if (tokens_size > rdev->wiphy.wowlan->tcp->tok->bufsize)
7953                         return -EINVAL;
7954                 if (tok->offset + tok->len > data_size)
7955                         return -EINVAL;
7956         }
7957
7958         if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) {
7959                 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]);
7960                 if (!rdev->wiphy.wowlan->tcp->seq)
7961                         return -EINVAL;
7962                 if (seq->len == 0 || seq->len > 4)
7963                         return -EINVAL;
7964                 if (seq->len + seq->offset > data_size)
7965                         return -EINVAL;
7966         }
7967
7968         size = sizeof(*cfg);
7969         size += data_size;
7970         size += wake_size + wake_mask_size;
7971         size += tokens_size;
7972
7973         cfg = kzalloc(size, GFP_KERNEL);
7974         if (!cfg)
7975                 return -ENOMEM;
7976         cfg->src = nla_get_be32(tb[NL80211_WOWLAN_TCP_SRC_IPV4]);
7977         cfg->dst = nla_get_be32(tb[NL80211_WOWLAN_TCP_DST_IPV4]);
7978         memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]),
7979                ETH_ALEN);
7980         if (tb[NL80211_WOWLAN_TCP_SRC_PORT])
7981                 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]);
7982         else
7983                 port = 0;
7984 #ifdef CONFIG_INET
7985         /* allocate a socket and port for it and use it */
7986         err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM,
7987                             IPPROTO_TCP, &cfg->sock, 1);
7988         if (err) {
7989                 kfree(cfg);
7990                 return err;
7991         }
7992         if (inet_csk_get_port(cfg->sock->sk, port)) {
7993                 sock_release(cfg->sock);
7994                 kfree(cfg);
7995                 return -EADDRINUSE;
7996         }
7997         cfg->src_port = inet_sk(cfg->sock->sk)->inet_num;
7998 #else
7999         if (!port) {
8000                 kfree(cfg);
8001                 return -EINVAL;
8002         }
8003         cfg->src_port = port;
8004 #endif
8005
8006         cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]);
8007         cfg->payload_len = data_size;
8008         cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size;
8009         memcpy((void *)cfg->payload,
8010                nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]),
8011                data_size);
8012         if (seq)
8013                 cfg->payload_seq = *seq;
8014         cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]);
8015         cfg->wake_len = wake_size;
8016         cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size;
8017         memcpy((void *)cfg->wake_data,
8018                nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]),
8019                wake_size);
8020         cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size +
8021                          data_size + wake_size;
8022         memcpy((void *)cfg->wake_mask,
8023                nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]),
8024                wake_mask_size);
8025         if (tok) {
8026                 cfg->tokens_size = tokens_size;
8027                 memcpy(&cfg->payload_tok, tok, sizeof(*tok) + tokens_size);
8028         }
8029
8030         trig->tcp = cfg;
8031
8032         return 0;
8033 }
8034
8035 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
8036 {
8037         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8038         struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
8039         struct cfg80211_wowlan new_triggers = {};
8040         struct cfg80211_wowlan *ntrig;
8041         const struct wiphy_wowlan_support *wowlan = rdev->wiphy.wowlan;
8042         int err, i;
8043         bool prev_enabled = rdev->wiphy.wowlan_config;
8044
8045         if (!wowlan)
8046                 return -EOPNOTSUPP;
8047
8048         if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) {
8049                 cfg80211_rdev_free_wowlan(rdev);
8050                 rdev->wiphy.wowlan_config = NULL;
8051                 goto set_wakeup;
8052         }
8053
8054         err = nla_parse(tb, MAX_NL80211_WOWLAN_TRIG,
8055                         nla_data(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
8056                         nla_len(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
8057                         nl80211_wowlan_policy);
8058         if (err)
8059                 return err;
8060
8061         if (tb[NL80211_WOWLAN_TRIG_ANY]) {
8062                 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
8063                         return -EINVAL;
8064                 new_triggers.any = true;
8065         }
8066
8067         if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
8068                 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
8069                         return -EINVAL;
8070                 new_triggers.disconnect = true;
8071         }
8072
8073         if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
8074                 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
8075                         return -EINVAL;
8076                 new_triggers.magic_pkt = true;
8077         }
8078
8079         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
8080                 return -EINVAL;
8081
8082         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
8083                 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
8084                         return -EINVAL;
8085                 new_triggers.gtk_rekey_failure = true;
8086         }
8087
8088         if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
8089                 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
8090                         return -EINVAL;
8091                 new_triggers.eap_identity_req = true;
8092         }
8093
8094         if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
8095                 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
8096                         return -EINVAL;
8097                 new_triggers.four_way_handshake = true;
8098         }
8099
8100         if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
8101                 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
8102                         return -EINVAL;
8103                 new_triggers.rfkill_release = true;
8104         }
8105
8106         if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
8107                 struct nlattr *pat;
8108                 int n_patterns = 0;
8109                 int rem, pat_len, mask_len, pkt_offset;
8110                 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
8111
8112                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
8113                                     rem)
8114                         n_patterns++;
8115                 if (n_patterns > wowlan->n_patterns)
8116                         return -EINVAL;
8117
8118                 new_triggers.patterns = kcalloc(n_patterns,
8119                                                 sizeof(new_triggers.patterns[0]),
8120                                                 GFP_KERNEL);
8121                 if (!new_triggers.patterns)
8122                         return -ENOMEM;
8123
8124                 new_triggers.n_patterns = n_patterns;
8125                 i = 0;
8126
8127                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
8128                                     rem) {
8129                         nla_parse(pat_tb, MAX_NL80211_PKTPAT, nla_data(pat),
8130                                   nla_len(pat), NULL);
8131                         err = -EINVAL;
8132                         if (!pat_tb[NL80211_PKTPAT_MASK] ||
8133                             !pat_tb[NL80211_PKTPAT_PATTERN])
8134                                 goto error;
8135                         pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
8136                         mask_len = DIV_ROUND_UP(pat_len, 8);
8137                         if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
8138                                 goto error;
8139                         if (pat_len > wowlan->pattern_max_len ||
8140                             pat_len < wowlan->pattern_min_len)
8141                                 goto error;
8142
8143                         if (!pat_tb[NL80211_PKTPAT_OFFSET])
8144                                 pkt_offset = 0;
8145                         else
8146                                 pkt_offset = nla_get_u32(
8147                                         pat_tb[NL80211_PKTPAT_OFFSET]);
8148                         if (pkt_offset > wowlan->max_pkt_offset)
8149                                 goto error;
8150                         new_triggers.patterns[i].pkt_offset = pkt_offset;
8151
8152                         new_triggers.patterns[i].mask =
8153                                 kmalloc(mask_len + pat_len, GFP_KERNEL);
8154                         if (!new_triggers.patterns[i].mask) {
8155                                 err = -ENOMEM;
8156                                 goto error;
8157                         }
8158                         new_triggers.patterns[i].pattern =
8159                                 new_triggers.patterns[i].mask + mask_len;
8160                         memcpy(new_triggers.patterns[i].mask,
8161                                nla_data(pat_tb[NL80211_PKTPAT_MASK]),
8162                                mask_len);
8163                         new_triggers.patterns[i].pattern_len = pat_len;
8164                         memcpy(new_triggers.patterns[i].pattern,
8165                                nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
8166                                pat_len);
8167                         i++;
8168                 }
8169         }
8170
8171         if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) {
8172                 err = nl80211_parse_wowlan_tcp(
8173                         rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION],
8174                         &new_triggers);
8175                 if (err)
8176                         goto error;
8177         }
8178
8179         ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL);
8180         if (!ntrig) {
8181                 err = -ENOMEM;
8182                 goto error;
8183         }
8184         cfg80211_rdev_free_wowlan(rdev);
8185         rdev->wiphy.wowlan_config = ntrig;
8186
8187  set_wakeup:
8188         if (rdev->ops->set_wakeup &&
8189             prev_enabled != !!rdev->wiphy.wowlan_config)
8190                 rdev_set_wakeup(rdev, rdev->wiphy.wowlan_config);
8191
8192         return 0;
8193  error:
8194         for (i = 0; i < new_triggers.n_patterns; i++)
8195                 kfree(new_triggers.patterns[i].mask);
8196         kfree(new_triggers.patterns);
8197         if (new_triggers.tcp && new_triggers.tcp->sock)
8198                 sock_release(new_triggers.tcp->sock);
8199         kfree(new_triggers.tcp);
8200         return err;
8201 }
8202 #endif
8203
8204 static int nl80211_send_coalesce_rules(struct sk_buff *msg,
8205                                        struct cfg80211_registered_device *rdev)
8206 {
8207         struct nlattr *nl_pats, *nl_pat, *nl_rule, *nl_rules;
8208         int i, j, pat_len;
8209         struct cfg80211_coalesce_rules *rule;
8210
8211         if (!rdev->coalesce->n_rules)
8212                 return 0;
8213
8214         nl_rules = nla_nest_start(msg, NL80211_ATTR_COALESCE_RULE);
8215         if (!nl_rules)
8216                 return -ENOBUFS;
8217
8218         for (i = 0; i < rdev->coalesce->n_rules; i++) {
8219                 nl_rule = nla_nest_start(msg, i + 1);
8220                 if (!nl_rule)
8221                         return -ENOBUFS;
8222
8223                 rule = &rdev->coalesce->rules[i];
8224                 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_DELAY,
8225                                 rule->delay))
8226                         return -ENOBUFS;
8227
8228                 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_CONDITION,
8229                                 rule->condition))
8230                         return -ENOBUFS;
8231
8232                 nl_pats = nla_nest_start(msg,
8233                                 NL80211_ATTR_COALESCE_RULE_PKT_PATTERN);
8234                 if (!nl_pats)
8235                         return -ENOBUFS;
8236
8237                 for (j = 0; j < rule->n_patterns; j++) {
8238                         nl_pat = nla_nest_start(msg, j + 1);
8239                         if (!nl_pat)
8240                                 return -ENOBUFS;
8241                         pat_len = rule->patterns[j].pattern_len;
8242                         if (nla_put(msg, NL80211_PKTPAT_MASK,
8243                                     DIV_ROUND_UP(pat_len, 8),
8244                                     rule->patterns[j].mask) ||
8245                             nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
8246                                     rule->patterns[j].pattern) ||
8247                             nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
8248                                         rule->patterns[j].pkt_offset))
8249                                 return -ENOBUFS;
8250                         nla_nest_end(msg, nl_pat);
8251                 }
8252                 nla_nest_end(msg, nl_pats);
8253                 nla_nest_end(msg, nl_rule);
8254         }
8255         nla_nest_end(msg, nl_rules);
8256
8257         return 0;
8258 }
8259
8260 static int nl80211_get_coalesce(struct sk_buff *skb, struct genl_info *info)
8261 {
8262         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8263         struct sk_buff *msg;
8264         void *hdr;
8265
8266         if (!rdev->wiphy.coalesce)
8267                 return -EOPNOTSUPP;
8268
8269         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8270         if (!msg)
8271                 return -ENOMEM;
8272
8273         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8274                              NL80211_CMD_GET_COALESCE);
8275         if (!hdr)
8276                 goto nla_put_failure;
8277
8278         if (rdev->coalesce && nl80211_send_coalesce_rules(msg, rdev))
8279                 goto nla_put_failure;
8280
8281         genlmsg_end(msg, hdr);
8282         return genlmsg_reply(msg, info);
8283
8284 nla_put_failure:
8285         nlmsg_free(msg);
8286         return -ENOBUFS;
8287 }
8288
8289 void cfg80211_rdev_free_coalesce(struct cfg80211_registered_device *rdev)
8290 {
8291         struct cfg80211_coalesce *coalesce = rdev->coalesce;
8292         int i, j;
8293         struct cfg80211_coalesce_rules *rule;
8294
8295         if (!coalesce)
8296                 return;
8297
8298         for (i = 0; i < coalesce->n_rules; i++) {
8299                 rule = &coalesce->rules[i];
8300                 for (j = 0; j < rule->n_patterns; j++)
8301                         kfree(rule->patterns[j].mask);
8302                 kfree(rule->patterns);
8303         }
8304         kfree(coalesce->rules);
8305         kfree(coalesce);
8306         rdev->coalesce = NULL;
8307 }
8308
8309 static int nl80211_parse_coalesce_rule(struct cfg80211_registered_device *rdev,
8310                                        struct nlattr *rule,
8311                                        struct cfg80211_coalesce_rules *new_rule)
8312 {
8313         int err, i;
8314         const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
8315         struct nlattr *tb[NUM_NL80211_ATTR_COALESCE_RULE], *pat;
8316         int rem, pat_len, mask_len, pkt_offset, n_patterns = 0;
8317         struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
8318
8319         err = nla_parse(tb, NL80211_ATTR_COALESCE_RULE_MAX, nla_data(rule),
8320                         nla_len(rule), nl80211_coalesce_policy);
8321         if (err)
8322                 return err;
8323
8324         if (tb[NL80211_ATTR_COALESCE_RULE_DELAY])
8325                 new_rule->delay =
8326                         nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_DELAY]);
8327         if (new_rule->delay > coalesce->max_delay)
8328                 return -EINVAL;
8329
8330         if (tb[NL80211_ATTR_COALESCE_RULE_CONDITION])
8331                 new_rule->condition =
8332                         nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_CONDITION]);
8333         if (new_rule->condition != NL80211_COALESCE_CONDITION_MATCH &&
8334             new_rule->condition != NL80211_COALESCE_CONDITION_NO_MATCH)
8335                 return -EINVAL;
8336
8337         if (!tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN])
8338                 return -EINVAL;
8339
8340         nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
8341                             rem)
8342                 n_patterns++;
8343         if (n_patterns > coalesce->n_patterns)
8344                 return -EINVAL;
8345
8346         new_rule->patterns = kcalloc(n_patterns, sizeof(new_rule->patterns[0]),
8347                                      GFP_KERNEL);
8348         if (!new_rule->patterns)
8349                 return -ENOMEM;
8350
8351         new_rule->n_patterns = n_patterns;
8352         i = 0;
8353
8354         nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
8355                             rem) {
8356                 nla_parse(pat_tb, MAX_NL80211_PKTPAT, nla_data(pat),
8357                           nla_len(pat), NULL);
8358                 if (!pat_tb[NL80211_PKTPAT_MASK] ||
8359                     !pat_tb[NL80211_PKTPAT_PATTERN])
8360                         return -EINVAL;
8361                 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
8362                 mask_len = DIV_ROUND_UP(pat_len, 8);
8363                 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
8364                         return -EINVAL;
8365                 if (pat_len > coalesce->pattern_max_len ||
8366                     pat_len < coalesce->pattern_min_len)
8367                         return -EINVAL;
8368
8369                 if (!pat_tb[NL80211_PKTPAT_OFFSET])
8370                         pkt_offset = 0;
8371                 else
8372                         pkt_offset = nla_get_u32(pat_tb[NL80211_PKTPAT_OFFSET]);
8373                 if (pkt_offset > coalesce->max_pkt_offset)
8374                         return -EINVAL;
8375                 new_rule->patterns[i].pkt_offset = pkt_offset;
8376
8377                 new_rule->patterns[i].mask =
8378                         kmalloc(mask_len + pat_len, GFP_KERNEL);
8379                 if (!new_rule->patterns[i].mask)
8380                         return -ENOMEM;
8381                 new_rule->patterns[i].pattern =
8382                         new_rule->patterns[i].mask + mask_len;
8383                 memcpy(new_rule->patterns[i].mask,
8384                        nla_data(pat_tb[NL80211_PKTPAT_MASK]), mask_len);
8385                 new_rule->patterns[i].pattern_len = pat_len;
8386                 memcpy(new_rule->patterns[i].pattern,
8387                        nla_data(pat_tb[NL80211_PKTPAT_PATTERN]), pat_len);
8388                 i++;
8389         }
8390
8391         return 0;
8392 }
8393
8394 static int nl80211_set_coalesce(struct sk_buff *skb, struct genl_info *info)
8395 {
8396         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8397         const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
8398         struct cfg80211_coalesce new_coalesce = {};
8399         struct cfg80211_coalesce *n_coalesce;
8400         int err, rem_rule, n_rules = 0, i, j;
8401         struct nlattr *rule;
8402         struct cfg80211_coalesce_rules *tmp_rule;
8403
8404         if (!rdev->wiphy.coalesce || !rdev->ops->set_coalesce)
8405                 return -EOPNOTSUPP;
8406
8407         if (!info->attrs[NL80211_ATTR_COALESCE_RULE]) {
8408                 cfg80211_rdev_free_coalesce(rdev);
8409                 rdev->ops->set_coalesce(&rdev->wiphy, NULL);
8410                 return 0;
8411         }
8412
8413         nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
8414                             rem_rule)
8415                 n_rules++;
8416         if (n_rules > coalesce->n_rules)
8417                 return -EINVAL;
8418
8419         new_coalesce.rules = kcalloc(n_rules, sizeof(new_coalesce.rules[0]),
8420                                      GFP_KERNEL);
8421         if (!new_coalesce.rules)
8422                 return -ENOMEM;
8423
8424         new_coalesce.n_rules = n_rules;
8425         i = 0;
8426
8427         nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
8428                             rem_rule) {
8429                 err = nl80211_parse_coalesce_rule(rdev, rule,
8430                                                   &new_coalesce.rules[i]);
8431                 if (err)
8432                         goto error;
8433
8434                 i++;
8435         }
8436
8437         err = rdev->ops->set_coalesce(&rdev->wiphy, &new_coalesce);
8438         if (err)
8439                 goto error;
8440
8441         n_coalesce = kmemdup(&new_coalesce, sizeof(new_coalesce), GFP_KERNEL);
8442         if (!n_coalesce) {
8443                 err = -ENOMEM;
8444                 goto error;
8445         }
8446         cfg80211_rdev_free_coalesce(rdev);
8447         rdev->coalesce = n_coalesce;
8448
8449         return 0;
8450 error:
8451         for (i = 0; i < new_coalesce.n_rules; i++) {
8452                 tmp_rule = &new_coalesce.rules[i];
8453                 for (j = 0; j < tmp_rule->n_patterns; j++)
8454                         kfree(tmp_rule->patterns[j].mask);
8455                 kfree(tmp_rule->patterns);
8456         }
8457         kfree(new_coalesce.rules);
8458
8459         return err;
8460 }
8461
8462 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
8463 {
8464         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8465         struct net_device *dev = info->user_ptr[1];
8466         struct wireless_dev *wdev = dev->ieee80211_ptr;
8467         struct nlattr *tb[NUM_NL80211_REKEY_DATA];
8468         struct cfg80211_gtk_rekey_data rekey_data;
8469         int err;
8470
8471         if (!info->attrs[NL80211_ATTR_REKEY_DATA])
8472                 return -EINVAL;
8473
8474         err = nla_parse(tb, MAX_NL80211_REKEY_DATA,
8475                         nla_data(info->attrs[NL80211_ATTR_REKEY_DATA]),
8476                         nla_len(info->attrs[NL80211_ATTR_REKEY_DATA]),
8477                         nl80211_rekey_policy);
8478         if (err)
8479                 return err;
8480
8481         if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN)
8482                 return -ERANGE;
8483         if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN)
8484                 return -ERANGE;
8485         if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN)
8486                 return -ERANGE;
8487
8488         memcpy(rekey_data.kek, nla_data(tb[NL80211_REKEY_DATA_KEK]),
8489                NL80211_KEK_LEN);
8490         memcpy(rekey_data.kck, nla_data(tb[NL80211_REKEY_DATA_KCK]),
8491                NL80211_KCK_LEN);
8492         memcpy(rekey_data.replay_ctr,
8493                nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]),
8494                NL80211_REPLAY_CTR_LEN);
8495
8496         wdev_lock(wdev);
8497         if (!wdev->current_bss) {
8498                 err = -ENOTCONN;
8499                 goto out;
8500         }
8501
8502         if (!rdev->ops->set_rekey_data) {
8503                 err = -EOPNOTSUPP;
8504                 goto out;
8505         }
8506
8507         err = rdev_set_rekey_data(rdev, dev, &rekey_data);
8508  out:
8509         wdev_unlock(wdev);
8510         return err;
8511 }
8512
8513 static int nl80211_register_unexpected_frame(struct sk_buff *skb,
8514                                              struct genl_info *info)
8515 {
8516         struct net_device *dev = info->user_ptr[1];
8517         struct wireless_dev *wdev = dev->ieee80211_ptr;
8518
8519         if (wdev->iftype != NL80211_IFTYPE_AP &&
8520             wdev->iftype != NL80211_IFTYPE_P2P_GO)
8521                 return -EINVAL;
8522
8523         if (wdev->ap_unexpected_nlportid)
8524                 return -EBUSY;
8525
8526         wdev->ap_unexpected_nlportid = info->snd_portid;
8527         return 0;
8528 }
8529
8530 static int nl80211_probe_client(struct sk_buff *skb,
8531                                 struct genl_info *info)
8532 {
8533         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8534         struct net_device *dev = info->user_ptr[1];
8535         struct wireless_dev *wdev = dev->ieee80211_ptr;
8536         struct sk_buff *msg;
8537         void *hdr;
8538         const u8 *addr;
8539         u64 cookie;
8540         int err;
8541
8542         if (wdev->iftype != NL80211_IFTYPE_AP &&
8543             wdev->iftype != NL80211_IFTYPE_P2P_GO)
8544                 return -EOPNOTSUPP;
8545
8546         if (!info->attrs[NL80211_ATTR_MAC])
8547                 return -EINVAL;
8548
8549         if (!rdev->ops->probe_client)
8550                 return -EOPNOTSUPP;
8551
8552         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8553         if (!msg)
8554                 return -ENOMEM;
8555
8556         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8557                              NL80211_CMD_PROBE_CLIENT);
8558
8559         if (IS_ERR(hdr)) {
8560                 err = PTR_ERR(hdr);
8561                 goto free_msg;
8562         }
8563
8564         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
8565
8566         err = rdev_probe_client(rdev, dev, addr, &cookie);
8567         if (err)
8568                 goto free_msg;
8569
8570         if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
8571                 goto nla_put_failure;
8572
8573         genlmsg_end(msg, hdr);
8574
8575         return genlmsg_reply(msg, info);
8576
8577  nla_put_failure:
8578         err = -ENOBUFS;
8579  free_msg:
8580         nlmsg_free(msg);
8581         return err;
8582 }
8583
8584 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
8585 {
8586         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8587         struct cfg80211_beacon_registration *reg, *nreg;
8588         int rv;
8589
8590         if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS))
8591                 return -EOPNOTSUPP;
8592
8593         nreg = kzalloc(sizeof(*nreg), GFP_KERNEL);
8594         if (!nreg)
8595                 return -ENOMEM;
8596
8597         /* First, check if already registered. */
8598         spin_lock_bh(&rdev->beacon_registrations_lock);
8599         list_for_each_entry(reg, &rdev->beacon_registrations, list) {
8600                 if (reg->nlportid == info->snd_portid) {
8601                         rv = -EALREADY;
8602                         goto out_err;
8603                 }
8604         }
8605         /* Add it to the list */
8606         nreg->nlportid = info->snd_portid;
8607         list_add(&nreg->list, &rdev->beacon_registrations);
8608
8609         spin_unlock_bh(&rdev->beacon_registrations_lock);
8610
8611         return 0;
8612 out_err:
8613         spin_unlock_bh(&rdev->beacon_registrations_lock);
8614         kfree(nreg);
8615         return rv;
8616 }
8617
8618 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info)
8619 {
8620         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8621         struct wireless_dev *wdev = info->user_ptr[1];
8622         int err;
8623
8624         if (!rdev->ops->start_p2p_device)
8625                 return -EOPNOTSUPP;
8626
8627         if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
8628                 return -EOPNOTSUPP;
8629
8630         if (wdev->p2p_started)
8631                 return 0;
8632
8633         err = cfg80211_can_add_interface(rdev, wdev->iftype);
8634         if (err)
8635                 return err;
8636
8637         err = rdev_start_p2p_device(rdev, wdev);
8638         if (err)
8639                 return err;
8640
8641         wdev->p2p_started = true;
8642         rdev->opencount++;
8643
8644         return 0;
8645 }
8646
8647 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info)
8648 {
8649         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8650         struct wireless_dev *wdev = info->user_ptr[1];
8651
8652         if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
8653                 return -EOPNOTSUPP;
8654
8655         if (!rdev->ops->stop_p2p_device)
8656                 return -EOPNOTSUPP;
8657
8658         cfg80211_stop_p2p_device(rdev, wdev);
8659
8660         return 0;
8661 }
8662
8663 static int nl80211_get_protocol_features(struct sk_buff *skb,
8664                                          struct genl_info *info)
8665 {
8666         void *hdr;
8667         struct sk_buff *msg;
8668
8669         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8670         if (!msg)
8671                 return -ENOMEM;
8672
8673         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8674                              NL80211_CMD_GET_PROTOCOL_FEATURES);
8675         if (!hdr)
8676                 goto nla_put_failure;
8677
8678         if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES,
8679                         NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP))
8680                 goto nla_put_failure;
8681
8682         genlmsg_end(msg, hdr);
8683         return genlmsg_reply(msg, info);
8684
8685  nla_put_failure:
8686         kfree_skb(msg);
8687         return -ENOBUFS;
8688 }
8689
8690 static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info)
8691 {
8692         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8693         struct cfg80211_update_ft_ies_params ft_params;
8694         struct net_device *dev = info->user_ptr[1];
8695
8696         if (!rdev->ops->update_ft_ies)
8697                 return -EOPNOTSUPP;
8698
8699         if (!info->attrs[NL80211_ATTR_MDID] ||
8700             !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8701                 return -EINVAL;
8702
8703         memset(&ft_params, 0, sizeof(ft_params));
8704         ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]);
8705         ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8706         ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8707
8708         return rdev_update_ft_ies(rdev, dev, &ft_params);
8709 }
8710
8711 static int nl80211_crit_protocol_start(struct sk_buff *skb,
8712                                        struct genl_info *info)
8713 {
8714         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8715         struct wireless_dev *wdev = info->user_ptr[1];
8716         enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC;
8717         u16 duration;
8718         int ret;
8719
8720         if (!rdev->ops->crit_proto_start)
8721                 return -EOPNOTSUPP;
8722
8723         if (WARN_ON(!rdev->ops->crit_proto_stop))
8724                 return -EINVAL;
8725
8726         if (rdev->crit_proto_nlportid)
8727                 return -EBUSY;
8728
8729         /* determine protocol if provided */
8730         if (info->attrs[NL80211_ATTR_CRIT_PROT_ID])
8731                 proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]);
8732
8733         if (proto >= NUM_NL80211_CRIT_PROTO)
8734                 return -EINVAL;
8735
8736         /* timeout must be provided */
8737         if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION])
8738                 return -EINVAL;
8739
8740         duration =
8741                 nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]);
8742
8743         if (duration > NL80211_CRIT_PROTO_MAX_DURATION)
8744                 return -ERANGE;
8745
8746         ret = rdev_crit_proto_start(rdev, wdev, proto, duration);
8747         if (!ret)
8748                 rdev->crit_proto_nlportid = info->snd_portid;
8749
8750         return ret;
8751 }
8752
8753 static int nl80211_crit_protocol_stop(struct sk_buff *skb,
8754                                       struct genl_info *info)
8755 {
8756         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8757         struct wireless_dev *wdev = info->user_ptr[1];
8758
8759         if (!rdev->ops->crit_proto_stop)
8760                 return -EOPNOTSUPP;
8761
8762         if (rdev->crit_proto_nlportid) {
8763                 rdev->crit_proto_nlportid = 0;
8764                 rdev_crit_proto_stop(rdev, wdev);
8765         }
8766         return 0;
8767 }
8768
8769 #define NL80211_FLAG_NEED_WIPHY         0x01
8770 #define NL80211_FLAG_NEED_NETDEV        0x02
8771 #define NL80211_FLAG_NEED_RTNL          0x04
8772 #define NL80211_FLAG_CHECK_NETDEV_UP    0x08
8773 #define NL80211_FLAG_NEED_NETDEV_UP     (NL80211_FLAG_NEED_NETDEV |\
8774                                          NL80211_FLAG_CHECK_NETDEV_UP)
8775 #define NL80211_FLAG_NEED_WDEV          0x10
8776 /* If a netdev is associated, it must be UP, P2P must be started */
8777 #define NL80211_FLAG_NEED_WDEV_UP       (NL80211_FLAG_NEED_WDEV |\
8778                                          NL80211_FLAG_CHECK_NETDEV_UP)
8779
8780 static int nl80211_pre_doit(struct genl_ops *ops, struct sk_buff *skb,
8781                             struct genl_info *info)
8782 {
8783         struct cfg80211_registered_device *rdev;
8784         struct wireless_dev *wdev;
8785         struct net_device *dev;
8786         bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
8787
8788         if (rtnl)
8789                 rtnl_lock();
8790
8791         if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
8792                 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
8793                 if (IS_ERR(rdev)) {
8794                         if (rtnl)
8795                                 rtnl_unlock();
8796                         return PTR_ERR(rdev);
8797                 }
8798                 info->user_ptr[0] = rdev;
8799         } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV ||
8800                    ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
8801                 ASSERT_RTNL();
8802
8803                 wdev = __cfg80211_wdev_from_attrs(genl_info_net(info),
8804                                                   info->attrs);
8805                 if (IS_ERR(wdev)) {
8806                         if (rtnl)
8807                                 rtnl_unlock();
8808                         return PTR_ERR(wdev);
8809                 }
8810
8811                 dev = wdev->netdev;
8812                 rdev = wiphy_to_dev(wdev->wiphy);
8813
8814                 if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
8815                         if (!dev) {
8816                                 if (rtnl)
8817                                         rtnl_unlock();
8818                                 return -EINVAL;
8819                         }
8820
8821                         info->user_ptr[1] = dev;
8822                 } else {
8823                         info->user_ptr[1] = wdev;
8824                 }
8825
8826                 if (dev) {
8827                         if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
8828                             !netif_running(dev)) {
8829                                 if (rtnl)
8830                                         rtnl_unlock();
8831                                 return -ENETDOWN;
8832                         }
8833
8834                         dev_hold(dev);
8835                 } else if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP) {
8836                         if (!wdev->p2p_started) {
8837                                 if (rtnl)
8838                                         rtnl_unlock();
8839                                 return -ENETDOWN;
8840                         }
8841                 }
8842
8843                 info->user_ptr[0] = rdev;
8844         }
8845
8846         return 0;
8847 }
8848
8849 static void nl80211_post_doit(struct genl_ops *ops, struct sk_buff *skb,
8850                               struct genl_info *info)
8851 {
8852         if (info->user_ptr[1]) {
8853                 if (ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
8854                         struct wireless_dev *wdev = info->user_ptr[1];
8855
8856                         if (wdev->netdev)
8857                                 dev_put(wdev->netdev);
8858                 } else {
8859                         dev_put(info->user_ptr[1]);
8860                 }
8861         }
8862         if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
8863                 rtnl_unlock();
8864 }
8865
8866 static struct genl_ops nl80211_ops[] = {
8867         {
8868                 .cmd = NL80211_CMD_GET_WIPHY,
8869                 .doit = nl80211_get_wiphy,
8870                 .dumpit = nl80211_dump_wiphy,
8871                 .done = nl80211_dump_wiphy_done,
8872                 .policy = nl80211_policy,
8873                 /* can be retrieved by unprivileged users */
8874                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
8875                                   NL80211_FLAG_NEED_RTNL,
8876         },
8877         {
8878                 .cmd = NL80211_CMD_SET_WIPHY,
8879                 .doit = nl80211_set_wiphy,
8880                 .policy = nl80211_policy,
8881                 .flags = GENL_ADMIN_PERM,
8882                 .internal_flags = NL80211_FLAG_NEED_RTNL,
8883         },
8884         {
8885                 .cmd = NL80211_CMD_GET_INTERFACE,
8886                 .doit = nl80211_get_interface,
8887                 .dumpit = nl80211_dump_interface,
8888                 .policy = nl80211_policy,
8889                 /* can be retrieved by unprivileged users */
8890                 .internal_flags = NL80211_FLAG_NEED_WDEV |
8891                                   NL80211_FLAG_NEED_RTNL,
8892         },
8893         {
8894                 .cmd = NL80211_CMD_SET_INTERFACE,
8895                 .doit = nl80211_set_interface,
8896                 .policy = nl80211_policy,
8897                 .flags = GENL_ADMIN_PERM,
8898                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
8899                                   NL80211_FLAG_NEED_RTNL,
8900         },
8901         {
8902                 .cmd = NL80211_CMD_NEW_INTERFACE,
8903                 .doit = nl80211_new_interface,
8904                 .policy = nl80211_policy,
8905                 .flags = GENL_ADMIN_PERM,
8906                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
8907                                   NL80211_FLAG_NEED_RTNL,
8908         },
8909         {
8910                 .cmd = NL80211_CMD_DEL_INTERFACE,
8911                 .doit = nl80211_del_interface,
8912                 .policy = nl80211_policy,
8913                 .flags = GENL_ADMIN_PERM,
8914                 .internal_flags = NL80211_FLAG_NEED_WDEV |
8915                                   NL80211_FLAG_NEED_RTNL,
8916         },
8917         {
8918                 .cmd = NL80211_CMD_GET_KEY,
8919                 .doit = nl80211_get_key,
8920                 .policy = nl80211_policy,
8921                 .flags = GENL_ADMIN_PERM,
8922                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8923                                   NL80211_FLAG_NEED_RTNL,
8924         },
8925         {
8926                 .cmd = NL80211_CMD_SET_KEY,
8927                 .doit = nl80211_set_key,
8928                 .policy = nl80211_policy,
8929                 .flags = GENL_ADMIN_PERM,
8930                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8931                                   NL80211_FLAG_NEED_RTNL,
8932         },
8933         {
8934                 .cmd = NL80211_CMD_NEW_KEY,
8935                 .doit = nl80211_new_key,
8936                 .policy = nl80211_policy,
8937                 .flags = GENL_ADMIN_PERM,
8938                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8939                                   NL80211_FLAG_NEED_RTNL,
8940         },
8941         {
8942                 .cmd = NL80211_CMD_DEL_KEY,
8943                 .doit = nl80211_del_key,
8944                 .policy = nl80211_policy,
8945                 .flags = GENL_ADMIN_PERM,
8946                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8947                                   NL80211_FLAG_NEED_RTNL,
8948         },
8949         {
8950                 .cmd = NL80211_CMD_SET_BEACON,
8951                 .policy = nl80211_policy,
8952                 .flags = GENL_ADMIN_PERM,
8953                 .doit = nl80211_set_beacon,
8954                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8955                                   NL80211_FLAG_NEED_RTNL,
8956         },
8957         {
8958                 .cmd = NL80211_CMD_START_AP,
8959                 .policy = nl80211_policy,
8960                 .flags = GENL_ADMIN_PERM,
8961                 .doit = nl80211_start_ap,
8962                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8963                                   NL80211_FLAG_NEED_RTNL,
8964         },
8965         {
8966                 .cmd = NL80211_CMD_STOP_AP,
8967                 .policy = nl80211_policy,
8968                 .flags = GENL_ADMIN_PERM,
8969                 .doit = nl80211_stop_ap,
8970                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8971                                   NL80211_FLAG_NEED_RTNL,
8972         },
8973         {
8974                 .cmd = NL80211_CMD_GET_STATION,
8975                 .doit = nl80211_get_station,
8976                 .dumpit = nl80211_dump_station,
8977                 .policy = nl80211_policy,
8978                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
8979                                   NL80211_FLAG_NEED_RTNL,
8980         },
8981         {
8982                 .cmd = NL80211_CMD_SET_STATION,
8983                 .doit = nl80211_set_station,
8984                 .policy = nl80211_policy,
8985                 .flags = GENL_ADMIN_PERM,
8986                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8987                                   NL80211_FLAG_NEED_RTNL,
8988         },
8989         {
8990                 .cmd = NL80211_CMD_NEW_STATION,
8991                 .doit = nl80211_new_station,
8992                 .policy = nl80211_policy,
8993                 .flags = GENL_ADMIN_PERM,
8994                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8995                                   NL80211_FLAG_NEED_RTNL,
8996         },
8997         {
8998                 .cmd = NL80211_CMD_DEL_STATION,
8999                 .doit = nl80211_del_station,
9000                 .policy = nl80211_policy,
9001                 .flags = GENL_ADMIN_PERM,
9002                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9003                                   NL80211_FLAG_NEED_RTNL,
9004         },
9005         {
9006                 .cmd = NL80211_CMD_GET_MPATH,
9007                 .doit = nl80211_get_mpath,
9008                 .dumpit = nl80211_dump_mpath,
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_SET_MPATH,
9016                 .doit = nl80211_set_mpath,
9017                 .policy = nl80211_policy,
9018                 .flags = GENL_ADMIN_PERM,
9019                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9020                                   NL80211_FLAG_NEED_RTNL,
9021         },
9022         {
9023                 .cmd = NL80211_CMD_NEW_MPATH,
9024                 .doit = nl80211_new_mpath,
9025                 .policy = nl80211_policy,
9026                 .flags = GENL_ADMIN_PERM,
9027                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9028                                   NL80211_FLAG_NEED_RTNL,
9029         },
9030         {
9031                 .cmd = NL80211_CMD_DEL_MPATH,
9032                 .doit = nl80211_del_mpath,
9033                 .policy = nl80211_policy,
9034                 .flags = GENL_ADMIN_PERM,
9035                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9036                                   NL80211_FLAG_NEED_RTNL,
9037         },
9038         {
9039                 .cmd = NL80211_CMD_SET_BSS,
9040                 .doit = nl80211_set_bss,
9041                 .policy = nl80211_policy,
9042                 .flags = GENL_ADMIN_PERM,
9043                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9044                                   NL80211_FLAG_NEED_RTNL,
9045         },
9046         {
9047                 .cmd = NL80211_CMD_GET_REG,
9048                 .doit = nl80211_get_reg,
9049                 .policy = nl80211_policy,
9050                 .internal_flags = NL80211_FLAG_NEED_RTNL,
9051                 /* can be retrieved by unprivileged users */
9052         },
9053         {
9054                 .cmd = NL80211_CMD_SET_REG,
9055                 .doit = nl80211_set_reg,
9056                 .policy = nl80211_policy,
9057                 .flags = GENL_ADMIN_PERM,
9058                 .internal_flags = NL80211_FLAG_NEED_RTNL,
9059         },
9060         {
9061                 .cmd = NL80211_CMD_REQ_SET_REG,
9062                 .doit = nl80211_req_set_reg,
9063                 .policy = nl80211_policy,
9064                 .flags = GENL_ADMIN_PERM,
9065         },
9066         {
9067                 .cmd = NL80211_CMD_GET_MESH_CONFIG,
9068                 .doit = nl80211_get_mesh_config,
9069                 .policy = nl80211_policy,
9070                 /* can be retrieved by unprivileged users */
9071                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9072                                   NL80211_FLAG_NEED_RTNL,
9073         },
9074         {
9075                 .cmd = NL80211_CMD_SET_MESH_CONFIG,
9076                 .doit = nl80211_update_mesh_config,
9077                 .policy = nl80211_policy,
9078                 .flags = GENL_ADMIN_PERM,
9079                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9080                                   NL80211_FLAG_NEED_RTNL,
9081         },
9082         {
9083                 .cmd = NL80211_CMD_TRIGGER_SCAN,
9084                 .doit = nl80211_trigger_scan,
9085                 .policy = nl80211_policy,
9086                 .flags = GENL_ADMIN_PERM,
9087                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
9088                                   NL80211_FLAG_NEED_RTNL,
9089         },
9090         {
9091                 .cmd = NL80211_CMD_GET_SCAN,
9092                 .policy = nl80211_policy,
9093                 .dumpit = nl80211_dump_scan,
9094         },
9095         {
9096                 .cmd = NL80211_CMD_START_SCHED_SCAN,
9097                 .doit = nl80211_start_sched_scan,
9098                 .policy = nl80211_policy,
9099                 .flags = GENL_ADMIN_PERM,
9100                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9101                                   NL80211_FLAG_NEED_RTNL,
9102         },
9103         {
9104                 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
9105                 .doit = nl80211_stop_sched_scan,
9106                 .policy = nl80211_policy,
9107                 .flags = GENL_ADMIN_PERM,
9108                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9109                                   NL80211_FLAG_NEED_RTNL,
9110         },
9111         {
9112                 .cmd = NL80211_CMD_AUTHENTICATE,
9113                 .doit = nl80211_authenticate,
9114                 .policy = nl80211_policy,
9115                 .flags = GENL_ADMIN_PERM,
9116                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9117                                   NL80211_FLAG_NEED_RTNL,
9118         },
9119         {
9120                 .cmd = NL80211_CMD_ASSOCIATE,
9121                 .doit = nl80211_associate,
9122                 .policy = nl80211_policy,
9123                 .flags = GENL_ADMIN_PERM,
9124                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9125                                   NL80211_FLAG_NEED_RTNL,
9126         },
9127         {
9128                 .cmd = NL80211_CMD_DEAUTHENTICATE,
9129                 .doit = nl80211_deauthenticate,
9130                 .policy = nl80211_policy,
9131                 .flags = GENL_ADMIN_PERM,
9132                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9133                                   NL80211_FLAG_NEED_RTNL,
9134         },
9135         {
9136                 .cmd = NL80211_CMD_DISASSOCIATE,
9137                 .doit = nl80211_disassociate,
9138                 .policy = nl80211_policy,
9139                 .flags = GENL_ADMIN_PERM,
9140                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9141                                   NL80211_FLAG_NEED_RTNL,
9142         },
9143         {
9144                 .cmd = NL80211_CMD_JOIN_IBSS,
9145                 .doit = nl80211_join_ibss,
9146                 .policy = nl80211_policy,
9147                 .flags = GENL_ADMIN_PERM,
9148                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9149                                   NL80211_FLAG_NEED_RTNL,
9150         },
9151         {
9152                 .cmd = NL80211_CMD_LEAVE_IBSS,
9153                 .doit = nl80211_leave_ibss,
9154                 .policy = nl80211_policy,
9155                 .flags = GENL_ADMIN_PERM,
9156                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9157                                   NL80211_FLAG_NEED_RTNL,
9158         },
9159 #ifdef CONFIG_NL80211_TESTMODE
9160         {
9161                 .cmd = NL80211_CMD_TESTMODE,
9162                 .doit = nl80211_testmode_do,
9163                 .dumpit = nl80211_testmode_dump,
9164                 .policy = nl80211_policy,
9165                 .flags = GENL_ADMIN_PERM,
9166                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
9167                                   NL80211_FLAG_NEED_RTNL,
9168         },
9169 #endif
9170         {
9171                 .cmd = NL80211_CMD_CONNECT,
9172                 .doit = nl80211_connect,
9173                 .policy = nl80211_policy,
9174                 .flags = GENL_ADMIN_PERM,
9175                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9176                                   NL80211_FLAG_NEED_RTNL,
9177         },
9178         {
9179                 .cmd = NL80211_CMD_DISCONNECT,
9180                 .doit = nl80211_disconnect,
9181                 .policy = nl80211_policy,
9182                 .flags = GENL_ADMIN_PERM,
9183                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9184                                   NL80211_FLAG_NEED_RTNL,
9185         },
9186         {
9187                 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
9188                 .doit = nl80211_wiphy_netns,
9189                 .policy = nl80211_policy,
9190                 .flags = GENL_ADMIN_PERM,
9191                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
9192                                   NL80211_FLAG_NEED_RTNL,
9193         },
9194         {
9195                 .cmd = NL80211_CMD_GET_SURVEY,
9196                 .policy = nl80211_policy,
9197                 .dumpit = nl80211_dump_survey,
9198         },
9199         {
9200                 .cmd = NL80211_CMD_SET_PMKSA,
9201                 .doit = nl80211_setdel_pmksa,
9202                 .policy = nl80211_policy,
9203                 .flags = GENL_ADMIN_PERM,
9204                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9205                                   NL80211_FLAG_NEED_RTNL,
9206         },
9207         {
9208                 .cmd = NL80211_CMD_DEL_PMKSA,
9209                 .doit = nl80211_setdel_pmksa,
9210                 .policy = nl80211_policy,
9211                 .flags = GENL_ADMIN_PERM,
9212                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9213                                   NL80211_FLAG_NEED_RTNL,
9214         },
9215         {
9216                 .cmd = NL80211_CMD_FLUSH_PMKSA,
9217                 .doit = nl80211_flush_pmksa,
9218                 .policy = nl80211_policy,
9219                 .flags = GENL_ADMIN_PERM,
9220                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9221                                   NL80211_FLAG_NEED_RTNL,
9222         },
9223         {
9224                 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
9225                 .doit = nl80211_remain_on_channel,
9226                 .policy = nl80211_policy,
9227                 .flags = GENL_ADMIN_PERM,
9228                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
9229                                   NL80211_FLAG_NEED_RTNL,
9230         },
9231         {
9232                 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
9233                 .doit = nl80211_cancel_remain_on_channel,
9234                 .policy = nl80211_policy,
9235                 .flags = GENL_ADMIN_PERM,
9236                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
9237                                   NL80211_FLAG_NEED_RTNL,
9238         },
9239         {
9240                 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
9241                 .doit = nl80211_set_tx_bitrate_mask,
9242                 .policy = nl80211_policy,
9243                 .flags = GENL_ADMIN_PERM,
9244                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9245                                   NL80211_FLAG_NEED_RTNL,
9246         },
9247         {
9248                 .cmd = NL80211_CMD_REGISTER_FRAME,
9249                 .doit = nl80211_register_mgmt,
9250                 .policy = nl80211_policy,
9251                 .flags = GENL_ADMIN_PERM,
9252                 .internal_flags = NL80211_FLAG_NEED_WDEV |
9253                                   NL80211_FLAG_NEED_RTNL,
9254         },
9255         {
9256                 .cmd = NL80211_CMD_FRAME,
9257                 .doit = nl80211_tx_mgmt,
9258                 .policy = nl80211_policy,
9259                 .flags = GENL_ADMIN_PERM,
9260                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
9261                                   NL80211_FLAG_NEED_RTNL,
9262         },
9263         {
9264                 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
9265                 .doit = nl80211_tx_mgmt_cancel_wait,
9266                 .policy = nl80211_policy,
9267                 .flags = GENL_ADMIN_PERM,
9268                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
9269                                   NL80211_FLAG_NEED_RTNL,
9270         },
9271         {
9272                 .cmd = NL80211_CMD_SET_POWER_SAVE,
9273                 .doit = nl80211_set_power_save,
9274                 .policy = nl80211_policy,
9275                 .flags = GENL_ADMIN_PERM,
9276                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9277                                   NL80211_FLAG_NEED_RTNL,
9278         },
9279         {
9280                 .cmd = NL80211_CMD_GET_POWER_SAVE,
9281                 .doit = nl80211_get_power_save,
9282                 .policy = nl80211_policy,
9283                 /* can be retrieved by unprivileged users */
9284                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9285                                   NL80211_FLAG_NEED_RTNL,
9286         },
9287         {
9288                 .cmd = NL80211_CMD_SET_CQM,
9289                 .doit = nl80211_set_cqm,
9290                 .policy = nl80211_policy,
9291                 .flags = GENL_ADMIN_PERM,
9292                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9293                                   NL80211_FLAG_NEED_RTNL,
9294         },
9295         {
9296                 .cmd = NL80211_CMD_SET_CHANNEL,
9297                 .doit = nl80211_set_channel,
9298                 .policy = nl80211_policy,
9299                 .flags = GENL_ADMIN_PERM,
9300                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9301                                   NL80211_FLAG_NEED_RTNL,
9302         },
9303         {
9304                 .cmd = NL80211_CMD_SET_WDS_PEER,
9305                 .doit = nl80211_set_wds_peer,
9306                 .policy = nl80211_policy,
9307                 .flags = GENL_ADMIN_PERM,
9308                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9309                                   NL80211_FLAG_NEED_RTNL,
9310         },
9311         {
9312                 .cmd = NL80211_CMD_JOIN_MESH,
9313                 .doit = nl80211_join_mesh,
9314                 .policy = nl80211_policy,
9315                 .flags = GENL_ADMIN_PERM,
9316                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9317                                   NL80211_FLAG_NEED_RTNL,
9318         },
9319         {
9320                 .cmd = NL80211_CMD_LEAVE_MESH,
9321                 .doit = nl80211_leave_mesh,
9322                 .policy = nl80211_policy,
9323                 .flags = GENL_ADMIN_PERM,
9324                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9325                                   NL80211_FLAG_NEED_RTNL,
9326         },
9327 #ifdef CONFIG_PM
9328         {
9329                 .cmd = NL80211_CMD_GET_WOWLAN,
9330                 .doit = nl80211_get_wowlan,
9331                 .policy = nl80211_policy,
9332                 /* can be retrieved by unprivileged users */
9333                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
9334                                   NL80211_FLAG_NEED_RTNL,
9335         },
9336         {
9337                 .cmd = NL80211_CMD_SET_WOWLAN,
9338                 .doit = nl80211_set_wowlan,
9339                 .policy = nl80211_policy,
9340                 .flags = GENL_ADMIN_PERM,
9341                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
9342                                   NL80211_FLAG_NEED_RTNL,
9343         },
9344 #endif
9345         {
9346                 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
9347                 .doit = nl80211_set_rekey_data,
9348                 .policy = nl80211_policy,
9349                 .flags = GENL_ADMIN_PERM,
9350                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9351                                   NL80211_FLAG_NEED_RTNL,
9352         },
9353         {
9354                 .cmd = NL80211_CMD_TDLS_MGMT,
9355                 .doit = nl80211_tdls_mgmt,
9356                 .policy = nl80211_policy,
9357                 .flags = GENL_ADMIN_PERM,
9358                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9359                                   NL80211_FLAG_NEED_RTNL,
9360         },
9361         {
9362                 .cmd = NL80211_CMD_TDLS_OPER,
9363                 .doit = nl80211_tdls_oper,
9364                 .policy = nl80211_policy,
9365                 .flags = GENL_ADMIN_PERM,
9366                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9367                                   NL80211_FLAG_NEED_RTNL,
9368         },
9369         {
9370                 .cmd = NL80211_CMD_UNEXPECTED_FRAME,
9371                 .doit = nl80211_register_unexpected_frame,
9372                 .policy = nl80211_policy,
9373                 .flags = GENL_ADMIN_PERM,
9374                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9375                                   NL80211_FLAG_NEED_RTNL,
9376         },
9377         {
9378                 .cmd = NL80211_CMD_PROBE_CLIENT,
9379                 .doit = nl80211_probe_client,
9380                 .policy = nl80211_policy,
9381                 .flags = GENL_ADMIN_PERM,
9382                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9383                                   NL80211_FLAG_NEED_RTNL,
9384         },
9385         {
9386                 .cmd = NL80211_CMD_REGISTER_BEACONS,
9387                 .doit = nl80211_register_beacons,
9388                 .policy = nl80211_policy,
9389                 .flags = GENL_ADMIN_PERM,
9390                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
9391                                   NL80211_FLAG_NEED_RTNL,
9392         },
9393         {
9394                 .cmd = NL80211_CMD_SET_NOACK_MAP,
9395                 .doit = nl80211_set_noack_map,
9396                 .policy = nl80211_policy,
9397                 .flags = GENL_ADMIN_PERM,
9398                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9399                                   NL80211_FLAG_NEED_RTNL,
9400         },
9401         {
9402                 .cmd = NL80211_CMD_START_P2P_DEVICE,
9403                 .doit = nl80211_start_p2p_device,
9404                 .policy = nl80211_policy,
9405                 .flags = GENL_ADMIN_PERM,
9406                 .internal_flags = NL80211_FLAG_NEED_WDEV |
9407                                   NL80211_FLAG_NEED_RTNL,
9408         },
9409         {
9410                 .cmd = NL80211_CMD_STOP_P2P_DEVICE,
9411                 .doit = nl80211_stop_p2p_device,
9412                 .policy = nl80211_policy,
9413                 .flags = GENL_ADMIN_PERM,
9414                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
9415                                   NL80211_FLAG_NEED_RTNL,
9416         },
9417         {
9418                 .cmd = NL80211_CMD_SET_MCAST_RATE,
9419                 .doit = nl80211_set_mcast_rate,
9420                 .policy = nl80211_policy,
9421                 .flags = GENL_ADMIN_PERM,
9422                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9423                                   NL80211_FLAG_NEED_RTNL,
9424         },
9425         {
9426                 .cmd = NL80211_CMD_SET_MAC_ACL,
9427                 .doit = nl80211_set_mac_acl,
9428                 .policy = nl80211_policy,
9429                 .flags = GENL_ADMIN_PERM,
9430                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9431                                   NL80211_FLAG_NEED_RTNL,
9432         },
9433         {
9434                 .cmd = NL80211_CMD_RADAR_DETECT,
9435                 .doit = nl80211_start_radar_detection,
9436                 .policy = nl80211_policy,
9437                 .flags = GENL_ADMIN_PERM,
9438                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9439                                   NL80211_FLAG_NEED_RTNL,
9440         },
9441         {
9442                 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES,
9443                 .doit = nl80211_get_protocol_features,
9444                 .policy = nl80211_policy,
9445         },
9446         {
9447                 .cmd = NL80211_CMD_UPDATE_FT_IES,
9448                 .doit = nl80211_update_ft_ies,
9449                 .policy = nl80211_policy,
9450                 .flags = GENL_ADMIN_PERM,
9451                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9452                                   NL80211_FLAG_NEED_RTNL,
9453         },
9454         {
9455                 .cmd = NL80211_CMD_CRIT_PROTOCOL_START,
9456                 .doit = nl80211_crit_protocol_start,
9457                 .policy = nl80211_policy,
9458                 .flags = GENL_ADMIN_PERM,
9459                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
9460                                   NL80211_FLAG_NEED_RTNL,
9461         },
9462         {
9463                 .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP,
9464                 .doit = nl80211_crit_protocol_stop,
9465                 .policy = nl80211_policy,
9466                 .flags = GENL_ADMIN_PERM,
9467                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
9468                                   NL80211_FLAG_NEED_RTNL,
9469         },
9470         {
9471                 .cmd = NL80211_CMD_GET_COALESCE,
9472                 .doit = nl80211_get_coalesce,
9473                 .policy = nl80211_policy,
9474                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
9475                                   NL80211_FLAG_NEED_RTNL,
9476         },
9477         {
9478                 .cmd = NL80211_CMD_SET_COALESCE,
9479                 .doit = nl80211_set_coalesce,
9480                 .policy = nl80211_policy,
9481                 .flags = GENL_ADMIN_PERM,
9482                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
9483                                   NL80211_FLAG_NEED_RTNL,
9484         },
9485         {
9486                 .cmd = NL80211_CMD_CHANNEL_SWITCH,
9487                 .doit = nl80211_channel_switch,
9488                 .policy = nl80211_policy,
9489                 .flags = GENL_ADMIN_PERM,
9490                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9491                                   NL80211_FLAG_NEED_RTNL,
9492         },
9493 };
9494
9495 static struct genl_multicast_group nl80211_mlme_mcgrp = {
9496         .name = "mlme",
9497 };
9498
9499 /* multicast groups */
9500 static struct genl_multicast_group nl80211_config_mcgrp = {
9501         .name = "config",
9502 };
9503 static struct genl_multicast_group nl80211_scan_mcgrp = {
9504         .name = "scan",
9505 };
9506 static struct genl_multicast_group nl80211_regulatory_mcgrp = {
9507         .name = "regulatory",
9508 };
9509
9510 /* notification functions */
9511
9512 void nl80211_notify_dev_rename(struct cfg80211_registered_device *rdev)
9513 {
9514         struct sk_buff *msg;
9515         struct nl80211_dump_wiphy_state state = {};
9516
9517         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9518         if (!msg)
9519                 return;
9520
9521         if (nl80211_send_wiphy(rdev, msg, 0, 0, 0, &state) < 0) {
9522                 nlmsg_free(msg);
9523                 return;
9524         }
9525
9526         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9527                                 nl80211_config_mcgrp.id, GFP_KERNEL);
9528 }
9529
9530 static int nl80211_add_scan_req(struct sk_buff *msg,
9531                                 struct cfg80211_registered_device *rdev)
9532 {
9533         struct cfg80211_scan_request *req = rdev->scan_req;
9534         struct nlattr *nest;
9535         int i;
9536
9537         if (WARN_ON(!req))
9538                 return 0;
9539
9540         nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS);
9541         if (!nest)
9542                 goto nla_put_failure;
9543         for (i = 0; i < req->n_ssids; i++) {
9544                 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid))
9545                         goto nla_put_failure;
9546         }
9547         nla_nest_end(msg, nest);
9548
9549         nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
9550         if (!nest)
9551                 goto nla_put_failure;
9552         for (i = 0; i < req->n_channels; i++) {
9553                 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
9554                         goto nla_put_failure;
9555         }
9556         nla_nest_end(msg, nest);
9557
9558         if (req->ie &&
9559             nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie))
9560                 goto nla_put_failure;
9561
9562         if (req->flags)
9563                 nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags);
9564
9565         return 0;
9566  nla_put_failure:
9567         return -ENOBUFS;
9568 }
9569
9570 static int nl80211_send_scan_msg(struct sk_buff *msg,
9571                                  struct cfg80211_registered_device *rdev,
9572                                  struct wireless_dev *wdev,
9573                                  u32 portid, u32 seq, int flags,
9574                                  u32 cmd)
9575 {
9576         void *hdr;
9577
9578         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
9579         if (!hdr)
9580                 return -1;
9581
9582         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9583             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
9584                                          wdev->netdev->ifindex)) ||
9585             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
9586                 goto nla_put_failure;
9587
9588         /* ignore errors and send incomplete event anyway */
9589         nl80211_add_scan_req(msg, rdev);
9590
9591         return genlmsg_end(msg, hdr);
9592
9593  nla_put_failure:
9594         genlmsg_cancel(msg, hdr);
9595         return -EMSGSIZE;
9596 }
9597
9598 static int
9599 nl80211_send_sched_scan_msg(struct sk_buff *msg,
9600                             struct cfg80211_registered_device *rdev,
9601                             struct net_device *netdev,
9602                             u32 portid, u32 seq, int flags, u32 cmd)
9603 {
9604         void *hdr;
9605
9606         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
9607         if (!hdr)
9608                 return -1;
9609
9610         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9611             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
9612                 goto nla_put_failure;
9613
9614         return genlmsg_end(msg, hdr);
9615
9616  nla_put_failure:
9617         genlmsg_cancel(msg, hdr);
9618         return -EMSGSIZE;
9619 }
9620
9621 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
9622                              struct wireless_dev *wdev)
9623 {
9624         struct sk_buff *msg;
9625
9626         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9627         if (!msg)
9628                 return;
9629
9630         if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
9631                                   NL80211_CMD_TRIGGER_SCAN) < 0) {
9632                 nlmsg_free(msg);
9633                 return;
9634         }
9635
9636         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9637                                 nl80211_scan_mcgrp.id, GFP_KERNEL);
9638 }
9639
9640 void nl80211_send_scan_done(struct cfg80211_registered_device *rdev,
9641                             struct wireless_dev *wdev)
9642 {
9643         struct sk_buff *msg;
9644
9645         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9646         if (!msg)
9647                 return;
9648
9649         if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
9650                                   NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
9651                 nlmsg_free(msg);
9652                 return;
9653         }
9654
9655         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9656                                 nl80211_scan_mcgrp.id, GFP_KERNEL);
9657 }
9658
9659 void nl80211_send_scan_aborted(struct cfg80211_registered_device *rdev,
9660                                struct wireless_dev *wdev)
9661 {
9662         struct sk_buff *msg;
9663
9664         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9665         if (!msg)
9666                 return;
9667
9668         if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
9669                                   NL80211_CMD_SCAN_ABORTED) < 0) {
9670                 nlmsg_free(msg);
9671                 return;
9672         }
9673
9674         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9675                                 nl80211_scan_mcgrp.id, GFP_KERNEL);
9676 }
9677
9678 void nl80211_send_sched_scan_results(struct cfg80211_registered_device *rdev,
9679                                      struct net_device *netdev)
9680 {
9681         struct sk_buff *msg;
9682
9683         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9684         if (!msg)
9685                 return;
9686
9687         if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0,
9688                                         NL80211_CMD_SCHED_SCAN_RESULTS) < 0) {
9689                 nlmsg_free(msg);
9690                 return;
9691         }
9692
9693         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9694                                 nl80211_scan_mcgrp.id, GFP_KERNEL);
9695 }
9696
9697 void nl80211_send_sched_scan(struct cfg80211_registered_device *rdev,
9698                              struct net_device *netdev, u32 cmd)
9699 {
9700         struct sk_buff *msg;
9701
9702         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9703         if (!msg)
9704                 return;
9705
9706         if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0, cmd) < 0) {
9707                 nlmsg_free(msg);
9708                 return;
9709         }
9710
9711         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9712                                 nl80211_scan_mcgrp.id, GFP_KERNEL);
9713 }
9714
9715 /*
9716  * This can happen on global regulatory changes or device specific settings
9717  * based on custom world regulatory domains.
9718  */
9719 void nl80211_send_reg_change_event(struct regulatory_request *request)
9720 {
9721         struct sk_buff *msg;
9722         void *hdr;
9723
9724         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9725         if (!msg)
9726                 return;
9727
9728         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_CHANGE);
9729         if (!hdr) {
9730                 nlmsg_free(msg);
9731                 return;
9732         }
9733
9734         /* Userspace can always count this one always being set */
9735         if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator))
9736                 goto nla_put_failure;
9737
9738         if (request->alpha2[0] == '0' && request->alpha2[1] == '0') {
9739                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
9740                                NL80211_REGDOM_TYPE_WORLD))
9741                         goto nla_put_failure;
9742         } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') {
9743                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
9744                                NL80211_REGDOM_TYPE_CUSTOM_WORLD))
9745                         goto nla_put_failure;
9746         } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
9747                    request->intersect) {
9748                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
9749                                NL80211_REGDOM_TYPE_INTERSECTION))
9750                         goto nla_put_failure;
9751         } else {
9752                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
9753                                NL80211_REGDOM_TYPE_COUNTRY) ||
9754                     nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
9755                                    request->alpha2))
9756                         goto nla_put_failure;
9757         }
9758
9759         if (request->wiphy_idx != WIPHY_IDX_INVALID &&
9760             nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx))
9761                 goto nla_put_failure;
9762
9763         genlmsg_end(msg, hdr);
9764
9765         rcu_read_lock();
9766         genlmsg_multicast_allns(msg, 0, nl80211_regulatory_mcgrp.id,
9767                                 GFP_ATOMIC);
9768         rcu_read_unlock();
9769
9770         return;
9771
9772 nla_put_failure:
9773         genlmsg_cancel(msg, hdr);
9774         nlmsg_free(msg);
9775 }
9776
9777 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
9778                                     struct net_device *netdev,
9779                                     const u8 *buf, size_t len,
9780                                     enum nl80211_commands cmd, gfp_t gfp)
9781 {
9782         struct sk_buff *msg;
9783         void *hdr;
9784
9785         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9786         if (!msg)
9787                 return;
9788
9789         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
9790         if (!hdr) {
9791                 nlmsg_free(msg);
9792                 return;
9793         }
9794
9795         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9796             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
9797             nla_put(msg, NL80211_ATTR_FRAME, len, buf))
9798                 goto nla_put_failure;
9799
9800         genlmsg_end(msg, hdr);
9801
9802         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9803                                 nl80211_mlme_mcgrp.id, gfp);
9804         return;
9805
9806  nla_put_failure:
9807         genlmsg_cancel(msg, hdr);
9808         nlmsg_free(msg);
9809 }
9810
9811 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
9812                           struct net_device *netdev, const u8 *buf,
9813                           size_t len, gfp_t gfp)
9814 {
9815         nl80211_send_mlme_event(rdev, netdev, buf, len,
9816                                 NL80211_CMD_AUTHENTICATE, gfp);
9817 }
9818
9819 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
9820                            struct net_device *netdev, const u8 *buf,
9821                            size_t len, gfp_t gfp)
9822 {
9823         nl80211_send_mlme_event(rdev, netdev, buf, len,
9824                                 NL80211_CMD_ASSOCIATE, gfp);
9825 }
9826
9827 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
9828                          struct net_device *netdev, const u8 *buf,
9829                          size_t len, gfp_t gfp)
9830 {
9831         nl80211_send_mlme_event(rdev, netdev, buf, len,
9832                                 NL80211_CMD_DEAUTHENTICATE, gfp);
9833 }
9834
9835 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
9836                            struct net_device *netdev, const u8 *buf,
9837                            size_t len, gfp_t gfp)
9838 {
9839         nl80211_send_mlme_event(rdev, netdev, buf, len,
9840                                 NL80211_CMD_DISASSOCIATE, gfp);
9841 }
9842
9843 void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf,
9844                                   size_t len)
9845 {
9846         struct wireless_dev *wdev = dev->ieee80211_ptr;
9847         struct wiphy *wiphy = wdev->wiphy;
9848         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
9849         const struct ieee80211_mgmt *mgmt = (void *)buf;
9850         u32 cmd;
9851
9852         if (WARN_ON(len < 2))
9853                 return;
9854
9855         if (ieee80211_is_deauth(mgmt->frame_control))
9856                 cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE;
9857         else
9858                 cmd = NL80211_CMD_UNPROT_DISASSOCIATE;
9859
9860         trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len);
9861         nl80211_send_mlme_event(rdev, dev, buf, len, cmd, GFP_ATOMIC);
9862 }
9863 EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt);
9864
9865 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
9866                                       struct net_device *netdev, int cmd,
9867                                       const u8 *addr, gfp_t gfp)
9868 {
9869         struct sk_buff *msg;
9870         void *hdr;
9871
9872         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9873         if (!msg)
9874                 return;
9875
9876         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
9877         if (!hdr) {
9878                 nlmsg_free(msg);
9879                 return;
9880         }
9881
9882         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9883             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
9884             nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
9885             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
9886                 goto nla_put_failure;
9887
9888         genlmsg_end(msg, hdr);
9889
9890         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9891                                 nl80211_mlme_mcgrp.id, gfp);
9892         return;
9893
9894  nla_put_failure:
9895         genlmsg_cancel(msg, hdr);
9896         nlmsg_free(msg);
9897 }
9898
9899 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
9900                                struct net_device *netdev, const u8 *addr,
9901                                gfp_t gfp)
9902 {
9903         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
9904                                   addr, gfp);
9905 }
9906
9907 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
9908                                 struct net_device *netdev, const u8 *addr,
9909                                 gfp_t gfp)
9910 {
9911         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
9912                                   addr, gfp);
9913 }
9914
9915 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
9916                                  struct net_device *netdev, const u8 *bssid,
9917                                  const u8 *req_ie, size_t req_ie_len,
9918                                  const u8 *resp_ie, size_t resp_ie_len,
9919                                  u16 status, gfp_t gfp)
9920 {
9921         struct sk_buff *msg;
9922         void *hdr;
9923
9924         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9925         if (!msg)
9926                 return;
9927
9928         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
9929         if (!hdr) {
9930                 nlmsg_free(msg);
9931                 return;
9932         }
9933
9934         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9935             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
9936             (bssid && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid)) ||
9937             nla_put_u16(msg, NL80211_ATTR_STATUS_CODE, status) ||
9938             (req_ie &&
9939              nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
9940             (resp_ie &&
9941              nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
9942                 goto nla_put_failure;
9943
9944         genlmsg_end(msg, hdr);
9945
9946         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9947                                 nl80211_mlme_mcgrp.id, gfp);
9948         return;
9949
9950  nla_put_failure:
9951         genlmsg_cancel(msg, hdr);
9952         nlmsg_free(msg);
9953
9954 }
9955
9956 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
9957                          struct net_device *netdev, const u8 *bssid,
9958                          const u8 *req_ie, size_t req_ie_len,
9959                          const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp)
9960 {
9961         struct sk_buff *msg;
9962         void *hdr;
9963
9964         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9965         if (!msg)
9966                 return;
9967
9968         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
9969         if (!hdr) {
9970                 nlmsg_free(msg);
9971                 return;
9972         }
9973
9974         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9975             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
9976             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid) ||
9977             (req_ie &&
9978              nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
9979             (resp_ie &&
9980              nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
9981                 goto nla_put_failure;
9982
9983         genlmsg_end(msg, hdr);
9984
9985         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9986                                 nl80211_mlme_mcgrp.id, gfp);
9987         return;
9988
9989  nla_put_failure:
9990         genlmsg_cancel(msg, hdr);
9991         nlmsg_free(msg);
9992
9993 }
9994
9995 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
9996                                struct net_device *netdev, u16 reason,
9997                                const u8 *ie, size_t ie_len, bool from_ap)
9998 {
9999         struct sk_buff *msg;
10000         void *hdr;
10001
10002         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10003         if (!msg)
10004                 return;
10005
10006         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
10007         if (!hdr) {
10008                 nlmsg_free(msg);
10009                 return;
10010         }
10011
10012         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10013             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10014             (from_ap && reason &&
10015              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) ||
10016             (from_ap &&
10017              nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) ||
10018             (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie)))
10019                 goto nla_put_failure;
10020
10021         genlmsg_end(msg, hdr);
10022
10023         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10024                                 nl80211_mlme_mcgrp.id, GFP_KERNEL);
10025         return;
10026
10027  nla_put_failure:
10028         genlmsg_cancel(msg, hdr);
10029         nlmsg_free(msg);
10030
10031 }
10032
10033 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
10034                              struct net_device *netdev, const u8 *bssid,
10035                              gfp_t gfp)
10036 {
10037         struct sk_buff *msg;
10038         void *hdr;
10039
10040         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10041         if (!msg)
10042                 return;
10043
10044         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
10045         if (!hdr) {
10046                 nlmsg_free(msg);
10047                 return;
10048         }
10049
10050         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10051             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10052             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
10053                 goto nla_put_failure;
10054
10055         genlmsg_end(msg, hdr);
10056
10057         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10058                                 nl80211_mlme_mcgrp.id, gfp);
10059         return;
10060
10061  nla_put_failure:
10062         genlmsg_cancel(msg, hdr);
10063         nlmsg_free(msg);
10064 }
10065
10066 void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr,
10067                                         const u8* ie, u8 ie_len, gfp_t gfp)
10068 {
10069         struct wireless_dev *wdev = dev->ieee80211_ptr;
10070         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
10071         struct sk_buff *msg;
10072         void *hdr;
10073
10074         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT))
10075                 return;
10076
10077         trace_cfg80211_notify_new_peer_candidate(dev, addr);
10078
10079         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10080         if (!msg)
10081                 return;
10082
10083         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
10084         if (!hdr) {
10085                 nlmsg_free(msg);
10086                 return;
10087         }
10088
10089         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10090             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
10091             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
10092             (ie_len && ie &&
10093              nla_put(msg, NL80211_ATTR_IE, ie_len , ie)))
10094                 goto nla_put_failure;
10095
10096         genlmsg_end(msg, hdr);
10097
10098         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10099                                 nl80211_mlme_mcgrp.id, gfp);
10100         return;
10101
10102  nla_put_failure:
10103         genlmsg_cancel(msg, hdr);
10104         nlmsg_free(msg);
10105 }
10106 EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate);
10107
10108 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
10109                                  struct net_device *netdev, const u8 *addr,
10110                                  enum nl80211_key_type key_type, int key_id,
10111                                  const u8 *tsc, gfp_t gfp)
10112 {
10113         struct sk_buff *msg;
10114         void *hdr;
10115
10116         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10117         if (!msg)
10118                 return;
10119
10120         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
10121         if (!hdr) {
10122                 nlmsg_free(msg);
10123                 return;
10124         }
10125
10126         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10127             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10128             (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
10129             nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) ||
10130             (key_id != -1 &&
10131              nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) ||
10132             (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc)))
10133                 goto nla_put_failure;
10134
10135         genlmsg_end(msg, hdr);
10136
10137         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10138                                 nl80211_mlme_mcgrp.id, gfp);
10139         return;
10140
10141  nla_put_failure:
10142         genlmsg_cancel(msg, hdr);
10143         nlmsg_free(msg);
10144 }
10145
10146 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
10147                                     struct ieee80211_channel *channel_before,
10148                                     struct ieee80211_channel *channel_after)
10149 {
10150         struct sk_buff *msg;
10151         void *hdr;
10152         struct nlattr *nl_freq;
10153
10154         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
10155         if (!msg)
10156                 return;
10157
10158         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
10159         if (!hdr) {
10160                 nlmsg_free(msg);
10161                 return;
10162         }
10163
10164         /*
10165          * Since we are applying the beacon hint to a wiphy we know its
10166          * wiphy_idx is valid
10167          */
10168         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
10169                 goto nla_put_failure;
10170
10171         /* Before */
10172         nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE);
10173         if (!nl_freq)
10174                 goto nla_put_failure;
10175         if (nl80211_msg_put_channel(msg, channel_before, false))
10176                 goto nla_put_failure;
10177         nla_nest_end(msg, nl_freq);
10178
10179         /* After */
10180         nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER);
10181         if (!nl_freq)
10182                 goto nla_put_failure;
10183         if (nl80211_msg_put_channel(msg, channel_after, false))
10184                 goto nla_put_failure;
10185         nla_nest_end(msg, nl_freq);
10186
10187         genlmsg_end(msg, hdr);
10188
10189         rcu_read_lock();
10190         genlmsg_multicast_allns(msg, 0, nl80211_regulatory_mcgrp.id,
10191                                 GFP_ATOMIC);
10192         rcu_read_unlock();
10193
10194         return;
10195
10196 nla_put_failure:
10197         genlmsg_cancel(msg, hdr);
10198         nlmsg_free(msg);
10199 }
10200
10201 static void nl80211_send_remain_on_chan_event(
10202         int cmd, struct cfg80211_registered_device *rdev,
10203         struct wireless_dev *wdev, u64 cookie,
10204         struct ieee80211_channel *chan,
10205         unsigned int duration, gfp_t gfp)
10206 {
10207         struct sk_buff *msg;
10208         void *hdr;
10209
10210         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10211         if (!msg)
10212                 return;
10213
10214         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
10215         if (!hdr) {
10216                 nlmsg_free(msg);
10217                 return;
10218         }
10219
10220         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10221             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
10222                                          wdev->netdev->ifindex)) ||
10223             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
10224             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) ||
10225             nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
10226                         NL80211_CHAN_NO_HT) ||
10227             nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
10228                 goto nla_put_failure;
10229
10230         if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL &&
10231             nla_put_u32(msg, NL80211_ATTR_DURATION, duration))
10232                 goto nla_put_failure;
10233
10234         genlmsg_end(msg, hdr);
10235
10236         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10237                                 nl80211_mlme_mcgrp.id, gfp);
10238         return;
10239
10240  nla_put_failure:
10241         genlmsg_cancel(msg, hdr);
10242         nlmsg_free(msg);
10243 }
10244
10245 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie,
10246                                struct ieee80211_channel *chan,
10247                                unsigned int duration, gfp_t gfp)
10248 {
10249         struct wiphy *wiphy = wdev->wiphy;
10250         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10251
10252         trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration);
10253         nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
10254                                           rdev, wdev, cookie, chan,
10255                                           duration, gfp);
10256 }
10257 EXPORT_SYMBOL(cfg80211_ready_on_channel);
10258
10259 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie,
10260                                         struct ieee80211_channel *chan,
10261                                         gfp_t gfp)
10262 {
10263         struct wiphy *wiphy = wdev->wiphy;
10264         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10265
10266         trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan);
10267         nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
10268                                           rdev, wdev, cookie, chan, 0, gfp);
10269 }
10270 EXPORT_SYMBOL(cfg80211_remain_on_channel_expired);
10271
10272 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr,
10273                       struct station_info *sinfo, gfp_t gfp)
10274 {
10275         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
10276         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10277         struct sk_buff *msg;
10278
10279         trace_cfg80211_new_sta(dev, mac_addr, sinfo);
10280
10281         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10282         if (!msg)
10283                 return;
10284
10285         if (nl80211_send_station(msg, 0, 0, 0,
10286                                  rdev, dev, mac_addr, sinfo) < 0) {
10287                 nlmsg_free(msg);
10288                 return;
10289         }
10290
10291         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10292                                 nl80211_mlme_mcgrp.id, gfp);
10293 }
10294 EXPORT_SYMBOL(cfg80211_new_sta);
10295
10296 void cfg80211_del_sta(struct net_device *dev, const u8 *mac_addr, gfp_t gfp)
10297 {
10298         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
10299         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10300         struct sk_buff *msg;
10301         void *hdr;
10302
10303         trace_cfg80211_del_sta(dev, mac_addr);
10304
10305         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10306         if (!msg)
10307                 return;
10308
10309         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_STATION);
10310         if (!hdr) {
10311                 nlmsg_free(msg);
10312                 return;
10313         }
10314
10315         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
10316             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
10317                 goto nla_put_failure;
10318
10319         genlmsg_end(msg, hdr);
10320
10321         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10322                                 nl80211_mlme_mcgrp.id, gfp);
10323         return;
10324
10325  nla_put_failure:
10326         genlmsg_cancel(msg, hdr);
10327         nlmsg_free(msg);
10328 }
10329 EXPORT_SYMBOL(cfg80211_del_sta);
10330
10331 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr,
10332                           enum nl80211_connect_failed_reason reason,
10333                           gfp_t gfp)
10334 {
10335         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
10336         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10337         struct sk_buff *msg;
10338         void *hdr;
10339
10340         msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
10341         if (!msg)
10342                 return;
10343
10344         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED);
10345         if (!hdr) {
10346                 nlmsg_free(msg);
10347                 return;
10348         }
10349
10350         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
10351             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
10352             nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason))
10353                 goto nla_put_failure;
10354
10355         genlmsg_end(msg, hdr);
10356
10357         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10358                                 nl80211_mlme_mcgrp.id, gfp);
10359         return;
10360
10361  nla_put_failure:
10362         genlmsg_cancel(msg, hdr);
10363         nlmsg_free(msg);
10364 }
10365 EXPORT_SYMBOL(cfg80211_conn_failed);
10366
10367 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
10368                                        const u8 *addr, gfp_t gfp)
10369 {
10370         struct wireless_dev *wdev = dev->ieee80211_ptr;
10371         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
10372         struct sk_buff *msg;
10373         void *hdr;
10374         u32 nlportid = ACCESS_ONCE(wdev->ap_unexpected_nlportid);
10375
10376         if (!nlportid)
10377                 return false;
10378
10379         msg = nlmsg_new(100, gfp);
10380         if (!msg)
10381                 return true;
10382
10383         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
10384         if (!hdr) {
10385                 nlmsg_free(msg);
10386                 return true;
10387         }
10388
10389         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10390             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
10391             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
10392                 goto nla_put_failure;
10393
10394         genlmsg_end(msg, hdr);
10395         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
10396         return true;
10397
10398  nla_put_failure:
10399         genlmsg_cancel(msg, hdr);
10400         nlmsg_free(msg);
10401         return true;
10402 }
10403
10404 bool cfg80211_rx_spurious_frame(struct net_device *dev,
10405                                 const u8 *addr, gfp_t gfp)
10406 {
10407         struct wireless_dev *wdev = dev->ieee80211_ptr;
10408         bool ret;
10409
10410         trace_cfg80211_rx_spurious_frame(dev, addr);
10411
10412         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
10413                     wdev->iftype != NL80211_IFTYPE_P2P_GO)) {
10414                 trace_cfg80211_return_bool(false);
10415                 return false;
10416         }
10417         ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
10418                                          addr, gfp);
10419         trace_cfg80211_return_bool(ret);
10420         return ret;
10421 }
10422 EXPORT_SYMBOL(cfg80211_rx_spurious_frame);
10423
10424 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev,
10425                                         const u8 *addr, gfp_t gfp)
10426 {
10427         struct wireless_dev *wdev = dev->ieee80211_ptr;
10428         bool ret;
10429
10430         trace_cfg80211_rx_unexpected_4addr_frame(dev, addr);
10431
10432         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
10433                     wdev->iftype != NL80211_IFTYPE_P2P_GO &&
10434                     wdev->iftype != NL80211_IFTYPE_AP_VLAN)) {
10435                 trace_cfg80211_return_bool(false);
10436                 return false;
10437         }
10438         ret = __nl80211_unexpected_frame(dev,
10439                                          NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
10440                                          addr, gfp);
10441         trace_cfg80211_return_bool(ret);
10442         return ret;
10443 }
10444 EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame);
10445
10446 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
10447                       struct wireless_dev *wdev, u32 nlportid,
10448                       int freq, int sig_dbm,
10449                       const u8 *buf, size_t len, gfp_t gfp)
10450 {
10451         struct net_device *netdev = wdev->netdev;
10452         struct sk_buff *msg;
10453         void *hdr;
10454
10455         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10456         if (!msg)
10457                 return -ENOMEM;
10458
10459         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
10460         if (!hdr) {
10461                 nlmsg_free(msg);
10462                 return -ENOMEM;
10463         }
10464
10465         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10466             (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
10467                                         netdev->ifindex)) ||
10468             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
10469             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) ||
10470             (sig_dbm &&
10471              nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
10472             nla_put(msg, NL80211_ATTR_FRAME, len, buf))
10473                 goto nla_put_failure;
10474
10475         genlmsg_end(msg, hdr);
10476
10477         return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
10478
10479  nla_put_failure:
10480         genlmsg_cancel(msg, hdr);
10481         nlmsg_free(msg);
10482         return -ENOBUFS;
10483 }
10484
10485 void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie,
10486                              const u8 *buf, size_t len, bool ack, gfp_t gfp)
10487 {
10488         struct wiphy *wiphy = wdev->wiphy;
10489         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10490         struct net_device *netdev = wdev->netdev;
10491         struct sk_buff *msg;
10492         void *hdr;
10493
10494         trace_cfg80211_mgmt_tx_status(wdev, cookie, ack);
10495
10496         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10497         if (!msg)
10498                 return;
10499
10500         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS);
10501         if (!hdr) {
10502                 nlmsg_free(msg);
10503                 return;
10504         }
10505
10506         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10507             (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
10508                                    netdev->ifindex)) ||
10509             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
10510             nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
10511             nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) ||
10512             (ack && nla_put_flag(msg, NL80211_ATTR_ACK)))
10513                 goto nla_put_failure;
10514
10515         genlmsg_end(msg, hdr);
10516
10517         genlmsg_multicast(msg, 0, nl80211_mlme_mcgrp.id, gfp);
10518         return;
10519
10520  nla_put_failure:
10521         genlmsg_cancel(msg, hdr);
10522         nlmsg_free(msg);
10523 }
10524 EXPORT_SYMBOL(cfg80211_mgmt_tx_status);
10525
10526 void cfg80211_cqm_rssi_notify(struct net_device *dev,
10527                               enum nl80211_cqm_rssi_threshold_event rssi_event,
10528                               gfp_t gfp)
10529 {
10530         struct wireless_dev *wdev = dev->ieee80211_ptr;
10531         struct wiphy *wiphy = wdev->wiphy;
10532         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10533         struct sk_buff *msg;
10534         struct nlattr *pinfoattr;
10535         void *hdr;
10536
10537         trace_cfg80211_cqm_rssi_notify(dev, rssi_event);
10538
10539         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10540         if (!msg)
10541                 return;
10542
10543         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
10544         if (!hdr) {
10545                 nlmsg_free(msg);
10546                 return;
10547         }
10548
10549         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10550             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
10551                 goto nla_put_failure;
10552
10553         pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
10554         if (!pinfoattr)
10555                 goto nla_put_failure;
10556
10557         if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
10558                         rssi_event))
10559                 goto nla_put_failure;
10560
10561         nla_nest_end(msg, pinfoattr);
10562
10563         genlmsg_end(msg, hdr);
10564
10565         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10566                                 nl80211_mlme_mcgrp.id, gfp);
10567         return;
10568
10569  nla_put_failure:
10570         genlmsg_cancel(msg, hdr);
10571         nlmsg_free(msg);
10572 }
10573 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify);
10574
10575 static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
10576                                      struct net_device *netdev, const u8 *bssid,
10577                                      const u8 *replay_ctr, gfp_t gfp)
10578 {
10579         struct sk_buff *msg;
10580         struct nlattr *rekey_attr;
10581         void *hdr;
10582
10583         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10584         if (!msg)
10585                 return;
10586
10587         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
10588         if (!hdr) {
10589                 nlmsg_free(msg);
10590                 return;
10591         }
10592
10593         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10594             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10595             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
10596                 goto nla_put_failure;
10597
10598         rekey_attr = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA);
10599         if (!rekey_attr)
10600                 goto nla_put_failure;
10601
10602         if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR,
10603                     NL80211_REPLAY_CTR_LEN, replay_ctr))
10604                 goto nla_put_failure;
10605
10606         nla_nest_end(msg, rekey_attr);
10607
10608         genlmsg_end(msg, hdr);
10609
10610         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10611                                 nl80211_mlme_mcgrp.id, gfp);
10612         return;
10613
10614  nla_put_failure:
10615         genlmsg_cancel(msg, hdr);
10616         nlmsg_free(msg);
10617 }
10618
10619 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid,
10620                                const u8 *replay_ctr, gfp_t gfp)
10621 {
10622         struct wireless_dev *wdev = dev->ieee80211_ptr;
10623         struct wiphy *wiphy = wdev->wiphy;
10624         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10625
10626         trace_cfg80211_gtk_rekey_notify(dev, bssid);
10627         nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp);
10628 }
10629 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify);
10630
10631 static void
10632 nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
10633                                struct net_device *netdev, int index,
10634                                const u8 *bssid, bool preauth, gfp_t gfp)
10635 {
10636         struct sk_buff *msg;
10637         struct nlattr *attr;
10638         void *hdr;
10639
10640         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10641         if (!msg)
10642                 return;
10643
10644         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
10645         if (!hdr) {
10646                 nlmsg_free(msg);
10647                 return;
10648         }
10649
10650         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10651             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
10652                 goto nla_put_failure;
10653
10654         attr = nla_nest_start(msg, NL80211_ATTR_PMKSA_CANDIDATE);
10655         if (!attr)
10656                 goto nla_put_failure;
10657
10658         if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) ||
10659             nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) ||
10660             (preauth &&
10661              nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH)))
10662                 goto nla_put_failure;
10663
10664         nla_nest_end(msg, attr);
10665
10666         genlmsg_end(msg, hdr);
10667
10668         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10669                                 nl80211_mlme_mcgrp.id, gfp);
10670         return;
10671
10672  nla_put_failure:
10673         genlmsg_cancel(msg, hdr);
10674         nlmsg_free(msg);
10675 }
10676
10677 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index,
10678                                      const u8 *bssid, bool preauth, gfp_t gfp)
10679 {
10680         struct wireless_dev *wdev = dev->ieee80211_ptr;
10681         struct wiphy *wiphy = wdev->wiphy;
10682         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10683
10684         trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth);
10685         nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp);
10686 }
10687 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify);
10688
10689 static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev,
10690                                      struct net_device *netdev,
10691                                      struct cfg80211_chan_def *chandef,
10692                                      gfp_t gfp)
10693 {
10694         struct sk_buff *msg;
10695         void *hdr;
10696
10697         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10698         if (!msg)
10699                 return;
10700
10701         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CH_SWITCH_NOTIFY);
10702         if (!hdr) {
10703                 nlmsg_free(msg);
10704                 return;
10705         }
10706
10707         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
10708                 goto nla_put_failure;
10709
10710         if (nl80211_send_chandef(msg, chandef))
10711                 goto nla_put_failure;
10712
10713         genlmsg_end(msg, hdr);
10714
10715         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10716                                 nl80211_mlme_mcgrp.id, gfp);
10717         return;
10718
10719  nla_put_failure:
10720         genlmsg_cancel(msg, hdr);
10721         nlmsg_free(msg);
10722 }
10723
10724 void cfg80211_ch_switch_notify(struct net_device *dev,
10725                                struct cfg80211_chan_def *chandef)
10726 {
10727         struct wireless_dev *wdev = dev->ieee80211_ptr;
10728         struct wiphy *wiphy = wdev->wiphy;
10729         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10730
10731         trace_cfg80211_ch_switch_notify(dev, chandef);
10732
10733         wdev_lock(wdev);
10734
10735         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
10736                     wdev->iftype != NL80211_IFTYPE_P2P_GO))
10737                 goto out;
10738
10739         wdev->channel = chandef->chan;
10740         nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL);
10741 out:
10742         wdev_unlock(wdev);
10743         return;
10744 }
10745 EXPORT_SYMBOL(cfg80211_ch_switch_notify);
10746
10747 void cfg80211_cqm_txe_notify(struct net_device *dev,
10748                              const u8 *peer, u32 num_packets,
10749                              u32 rate, u32 intvl, gfp_t gfp)
10750 {
10751         struct wireless_dev *wdev = dev->ieee80211_ptr;
10752         struct wiphy *wiphy = wdev->wiphy;
10753         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10754         struct sk_buff *msg;
10755         struct nlattr *pinfoattr;
10756         void *hdr;
10757
10758         msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
10759         if (!msg)
10760                 return;
10761
10762         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
10763         if (!hdr) {
10764                 nlmsg_free(msg);
10765                 return;
10766         }
10767
10768         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10769             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
10770             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer))
10771                 goto nla_put_failure;
10772
10773         pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
10774         if (!pinfoattr)
10775                 goto nla_put_failure;
10776
10777         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets))
10778                 goto nla_put_failure;
10779
10780         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate))
10781                 goto nla_put_failure;
10782
10783         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl))
10784                 goto nla_put_failure;
10785
10786         nla_nest_end(msg, pinfoattr);
10787
10788         genlmsg_end(msg, hdr);
10789
10790         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10791                                 nl80211_mlme_mcgrp.id, gfp);
10792         return;
10793
10794  nla_put_failure:
10795         genlmsg_cancel(msg, hdr);
10796         nlmsg_free(msg);
10797 }
10798 EXPORT_SYMBOL(cfg80211_cqm_txe_notify);
10799
10800 void
10801 nl80211_radar_notify(struct cfg80211_registered_device *rdev,
10802                      struct cfg80211_chan_def *chandef,
10803                      enum nl80211_radar_event event,
10804                      struct net_device *netdev, gfp_t gfp)
10805 {
10806         struct sk_buff *msg;
10807         void *hdr;
10808
10809         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10810         if (!msg)
10811                 return;
10812
10813         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT);
10814         if (!hdr) {
10815                 nlmsg_free(msg);
10816                 return;
10817         }
10818
10819         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
10820                 goto nla_put_failure;
10821
10822         /* NOP and radar events don't need a netdev parameter */
10823         if (netdev) {
10824                 struct wireless_dev *wdev = netdev->ieee80211_ptr;
10825
10826                 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10827                     nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
10828                         goto nla_put_failure;
10829         }
10830
10831         if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event))
10832                 goto nla_put_failure;
10833
10834         if (nl80211_send_chandef(msg, chandef))
10835                 goto nla_put_failure;
10836
10837         genlmsg_end(msg, hdr);
10838
10839         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10840                                 nl80211_mlme_mcgrp.id, gfp);
10841         return;
10842
10843  nla_put_failure:
10844         genlmsg_cancel(msg, hdr);
10845         nlmsg_free(msg);
10846 }
10847
10848 void cfg80211_cqm_pktloss_notify(struct net_device *dev,
10849                                  const u8 *peer, u32 num_packets, gfp_t gfp)
10850 {
10851         struct wireless_dev *wdev = dev->ieee80211_ptr;
10852         struct wiphy *wiphy = wdev->wiphy;
10853         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10854         struct sk_buff *msg;
10855         struct nlattr *pinfoattr;
10856         void *hdr;
10857
10858         trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets);
10859
10860         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10861         if (!msg)
10862                 return;
10863
10864         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
10865         if (!hdr) {
10866                 nlmsg_free(msg);
10867                 return;
10868         }
10869
10870         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10871             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
10872             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer))
10873                 goto nla_put_failure;
10874
10875         pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
10876         if (!pinfoattr)
10877                 goto nla_put_failure;
10878
10879         if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets))
10880                 goto nla_put_failure;
10881
10882         nla_nest_end(msg, pinfoattr);
10883
10884         genlmsg_end(msg, hdr);
10885
10886         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10887                                 nl80211_mlme_mcgrp.id, gfp);
10888         return;
10889
10890  nla_put_failure:
10891         genlmsg_cancel(msg, hdr);
10892         nlmsg_free(msg);
10893 }
10894 EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify);
10895
10896 void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
10897                            u64 cookie, bool acked, gfp_t gfp)
10898 {
10899         struct wireless_dev *wdev = dev->ieee80211_ptr;
10900         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
10901         struct sk_buff *msg;
10902         void *hdr;
10903
10904         trace_cfg80211_probe_status(dev, addr, cookie, acked);
10905
10906         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10907
10908         if (!msg)
10909                 return;
10910
10911         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT);
10912         if (!hdr) {
10913                 nlmsg_free(msg);
10914                 return;
10915         }
10916
10917         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10918             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
10919             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
10920             nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) ||
10921             (acked && nla_put_flag(msg, NL80211_ATTR_ACK)))
10922                 goto nla_put_failure;
10923
10924         genlmsg_end(msg, hdr);
10925
10926         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10927                                 nl80211_mlme_mcgrp.id, gfp);
10928         return;
10929
10930  nla_put_failure:
10931         genlmsg_cancel(msg, hdr);
10932         nlmsg_free(msg);
10933 }
10934 EXPORT_SYMBOL(cfg80211_probe_status);
10935
10936 void cfg80211_report_obss_beacon(struct wiphy *wiphy,
10937                                  const u8 *frame, size_t len,
10938                                  int freq, int sig_dbm)
10939 {
10940         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10941         struct sk_buff *msg;
10942         void *hdr;
10943         struct cfg80211_beacon_registration *reg;
10944
10945         trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm);
10946
10947         spin_lock_bh(&rdev->beacon_registrations_lock);
10948         list_for_each_entry(reg, &rdev->beacon_registrations, list) {
10949                 msg = nlmsg_new(len + 100, GFP_ATOMIC);
10950                 if (!msg) {
10951                         spin_unlock_bh(&rdev->beacon_registrations_lock);
10952                         return;
10953                 }
10954
10955                 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
10956                 if (!hdr)
10957                         goto nla_put_failure;
10958
10959                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10960                     (freq &&
10961                      nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq)) ||
10962                     (sig_dbm &&
10963                      nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
10964                     nla_put(msg, NL80211_ATTR_FRAME, len, frame))
10965                         goto nla_put_failure;
10966
10967                 genlmsg_end(msg, hdr);
10968
10969                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid);
10970         }
10971         spin_unlock_bh(&rdev->beacon_registrations_lock);
10972         return;
10973
10974  nla_put_failure:
10975         spin_unlock_bh(&rdev->beacon_registrations_lock);
10976         if (hdr)
10977                 genlmsg_cancel(msg, hdr);
10978         nlmsg_free(msg);
10979 }
10980 EXPORT_SYMBOL(cfg80211_report_obss_beacon);
10981
10982 #ifdef CONFIG_PM
10983 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev,
10984                                    struct cfg80211_wowlan_wakeup *wakeup,
10985                                    gfp_t gfp)
10986 {
10987         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
10988         struct sk_buff *msg;
10989         void *hdr;
10990         int size = 200;
10991
10992         trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup);
10993
10994         if (wakeup)
10995                 size += wakeup->packet_present_len;
10996
10997         msg = nlmsg_new(size, gfp);
10998         if (!msg)
10999                 return;
11000
11001         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN);
11002         if (!hdr)
11003                 goto free_msg;
11004
11005         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11006             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
11007                 goto free_msg;
11008
11009         if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11010                                         wdev->netdev->ifindex))
11011                 goto free_msg;
11012
11013         if (wakeup) {
11014                 struct nlattr *reasons;
11015
11016                 reasons = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
11017
11018                 if (wakeup->disconnect &&
11019                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT))
11020                         goto free_msg;
11021                 if (wakeup->magic_pkt &&
11022                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT))
11023                         goto free_msg;
11024                 if (wakeup->gtk_rekey_failure &&
11025                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE))
11026                         goto free_msg;
11027                 if (wakeup->eap_identity_req &&
11028                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST))
11029                         goto free_msg;
11030                 if (wakeup->four_way_handshake &&
11031                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE))
11032                         goto free_msg;
11033                 if (wakeup->rfkill_release &&
11034                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))
11035                         goto free_msg;
11036
11037                 if (wakeup->pattern_idx >= 0 &&
11038                     nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
11039                                 wakeup->pattern_idx))
11040                         goto free_msg;
11041
11042                 if (wakeup->tcp_match)
11043                         nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH);
11044
11045                 if (wakeup->tcp_connlost)
11046                         nla_put_flag(msg,
11047                                      NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST);
11048
11049                 if (wakeup->tcp_nomoretokens)
11050                         nla_put_flag(msg,
11051                                 NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS);
11052
11053                 if (wakeup->packet) {
11054                         u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211;
11055                         u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN;
11056
11057                         if (!wakeup->packet_80211) {
11058                                 pkt_attr =
11059                                         NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023;
11060                                 len_attr =
11061                                         NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN;
11062                         }
11063
11064                         if (wakeup->packet_len &&
11065                             nla_put_u32(msg, len_attr, wakeup->packet_len))
11066                                 goto free_msg;
11067
11068                         if (nla_put(msg, pkt_attr, wakeup->packet_present_len,
11069                                     wakeup->packet))
11070                                 goto free_msg;
11071                 }
11072
11073                 nla_nest_end(msg, reasons);
11074         }
11075
11076         genlmsg_end(msg, hdr);
11077
11078         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
11079                                 nl80211_mlme_mcgrp.id, gfp);
11080         return;
11081
11082  free_msg:
11083         nlmsg_free(msg);
11084 }
11085 EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup);
11086 #endif
11087
11088 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer,
11089                                 enum nl80211_tdls_operation oper,
11090                                 u16 reason_code, gfp_t gfp)
11091 {
11092         struct wireless_dev *wdev = dev->ieee80211_ptr;
11093         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
11094         struct sk_buff *msg;
11095         void *hdr;
11096
11097         trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper,
11098                                          reason_code);
11099
11100         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11101         if (!msg)
11102                 return;
11103
11104         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER);
11105         if (!hdr) {
11106                 nlmsg_free(msg);
11107                 return;
11108         }
11109
11110         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11111             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
11112             nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) ||
11113             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) ||
11114             (reason_code > 0 &&
11115              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code)))
11116                 goto nla_put_failure;
11117
11118         genlmsg_end(msg, hdr);
11119
11120         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
11121                                 nl80211_mlme_mcgrp.id, gfp);
11122         return;
11123
11124  nla_put_failure:
11125         genlmsg_cancel(msg, hdr);
11126         nlmsg_free(msg);
11127 }
11128 EXPORT_SYMBOL(cfg80211_tdls_oper_request);
11129
11130 static int nl80211_netlink_notify(struct notifier_block * nb,
11131                                   unsigned long state,
11132                                   void *_notify)
11133 {
11134         struct netlink_notify *notify = _notify;
11135         struct cfg80211_registered_device *rdev;
11136         struct wireless_dev *wdev;
11137         struct cfg80211_beacon_registration *reg, *tmp;
11138
11139         if (state != NETLINK_URELEASE)
11140                 return NOTIFY_DONE;
11141
11142         rcu_read_lock();
11143
11144         list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
11145                 list_for_each_entry_rcu(wdev, &rdev->wdev_list, list)
11146                         cfg80211_mlme_unregister_socket(wdev, notify->portid);
11147
11148                 spin_lock_bh(&rdev->beacon_registrations_lock);
11149                 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations,
11150                                          list) {
11151                         if (reg->nlportid == notify->portid) {
11152                                 list_del(&reg->list);
11153                                 kfree(reg);
11154                                 break;
11155                         }
11156                 }
11157                 spin_unlock_bh(&rdev->beacon_registrations_lock);
11158         }
11159
11160         rcu_read_unlock();
11161
11162         return NOTIFY_DONE;
11163 }
11164
11165 static struct notifier_block nl80211_netlink_notifier = {
11166         .notifier_call = nl80211_netlink_notify,
11167 };
11168
11169 void cfg80211_ft_event(struct net_device *netdev,
11170                        struct cfg80211_ft_event_params *ft_event)
11171 {
11172         struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
11173         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
11174         struct sk_buff *msg;
11175         void *hdr;
11176
11177         trace_cfg80211_ft_event(wiphy, netdev, ft_event);
11178
11179         if (!ft_event->target_ap)
11180                 return;
11181
11182         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11183         if (!msg)
11184                 return;
11185
11186         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT);
11187         if (!hdr) {
11188                 nlmsg_free(msg);
11189                 return;
11190         }
11191
11192         nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
11193         nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
11194         nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap);
11195         if (ft_event->ies)
11196                 nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies);
11197         if (ft_event->ric_ies)
11198                 nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len,
11199                         ft_event->ric_ies);
11200
11201         genlmsg_end(msg, hdr);
11202
11203         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
11204                                 nl80211_mlme_mcgrp.id, GFP_KERNEL);
11205 }
11206 EXPORT_SYMBOL(cfg80211_ft_event);
11207
11208 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp)
11209 {
11210         struct cfg80211_registered_device *rdev;
11211         struct sk_buff *msg;
11212         void *hdr;
11213         u32 nlportid;
11214
11215         rdev = wiphy_to_dev(wdev->wiphy);
11216         if (!rdev->crit_proto_nlportid)
11217                 return;
11218
11219         nlportid = rdev->crit_proto_nlportid;
11220         rdev->crit_proto_nlportid = 0;
11221
11222         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11223         if (!msg)
11224                 return;
11225
11226         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP);
11227         if (!hdr)
11228                 goto nla_put_failure;
11229
11230         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11231             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
11232                 goto nla_put_failure;
11233
11234         genlmsg_end(msg, hdr);
11235
11236         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
11237         return;
11238
11239  nla_put_failure:
11240         if (hdr)
11241                 genlmsg_cancel(msg, hdr);
11242         nlmsg_free(msg);
11243
11244 }
11245 EXPORT_SYMBOL(cfg80211_crit_proto_stopped);
11246
11247 /* initialisation/exit functions */
11248
11249 int nl80211_init(void)
11250 {
11251         int err;
11252
11253         err = genl_register_family_with_ops(&nl80211_fam,
11254                 nl80211_ops, ARRAY_SIZE(nl80211_ops));
11255         if (err)
11256                 return err;
11257
11258         err = genl_register_mc_group(&nl80211_fam, &nl80211_config_mcgrp);
11259         if (err)
11260                 goto err_out;
11261
11262         err = genl_register_mc_group(&nl80211_fam, &nl80211_scan_mcgrp);
11263         if (err)
11264                 goto err_out;
11265
11266         err = genl_register_mc_group(&nl80211_fam, &nl80211_regulatory_mcgrp);
11267         if (err)
11268                 goto err_out;
11269
11270         err = genl_register_mc_group(&nl80211_fam, &nl80211_mlme_mcgrp);
11271         if (err)
11272                 goto err_out;
11273
11274 #ifdef CONFIG_NL80211_TESTMODE
11275         err = genl_register_mc_group(&nl80211_fam, &nl80211_testmode_mcgrp);
11276         if (err)
11277                 goto err_out;
11278 #endif
11279
11280         err = netlink_register_notifier(&nl80211_netlink_notifier);
11281         if (err)
11282                 goto err_out;
11283
11284         return 0;
11285  err_out:
11286         genl_unregister_family(&nl80211_fam);
11287         return err;
11288 }
11289
11290 void nl80211_exit(void)
11291 {
11292         netlink_unregister_notifier(&nl80211_netlink_notifier);
11293         genl_unregister_family(&nl80211_fam);
11294 }