net/wireless/nl80211.c

   1 /*
   2  * This is the new netlink-based wireless configuration interface.
   3  *
   4  * Copyright 2006-2010  Johannes Berg <johannes@sipsolutions.net>
   5  * Copyright 2013-2014  Intel Mobile Communications GmbH
   6  */
   7
   8 #include <linux/if.h>
   9 #include <linux/module.h>
  10 #include <linux/err.h>
  11 #include <linux/slab.h>
  12 #include <linux/list.h>
  13 #include <linux/if_ether.h>
  14 #include <linux/ieee80211.h>
  15 #include <linux/nl80211.h>
  16 #include <linux/rtnetlink.h>
  17 #include <linux/netlink.h>
  18 #include <linux/etherdevice.h>
  19 #include <net/net_namespace.h>
  20 #include <net/genetlink.h>
  21 #include <net/cfg80211.h>
  22 #include <net/sock.h>
  23 #include <net/inet_connection_sock.h>
  24 #include "core.h"
  25 #include "nl80211.h"
  26 #include "reg.h"
  27 #include "rdev-ops.h"
  28
  29 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
  30                                    struct genl_info *info,
  31                                    struct cfg80211_crypto_settings *settings,
  32                                    int cipher_limit);
  33
  34 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
  35                             struct genl_info *info);
  36 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
  37                               struct genl_info *info);
  38
  39 /* the netlink family */
  40 static struct genl_family nl80211_fam = {
  41         .id = GENL_ID_GENERATE,         /* don't bother with a hardcoded ID */
  42         .name = NL80211_GENL_NAME,      /* have users key off the name instead */
  43         .hdrsize = 0,                   /* no private header */
  44         .version = 1,                   /* no particular meaning now */
  45         .maxattr = NL80211_ATTR_MAX,
  46         .netnsok = true,
  47         .pre_doit = nl80211_pre_doit,
  48         .post_doit = nl80211_post_doit,
  49 };
  50
  51 /* multicast groups */
  52 enum nl80211_multicast_groups {
  53         NL80211_MCGRP_CONFIG,
  54         NL80211_MCGRP_SCAN,
  55         NL80211_MCGRP_REGULATORY,
  56         NL80211_MCGRP_MLME,
  57         NL80211_MCGRP_VENDOR,
  58         NL80211_MCGRP_TESTMODE /* keep last - ifdef! */
  59 };
  60
  61 static const struct genl_multicast_group nl80211_mcgrps[] = {
  62         [NL80211_MCGRP_CONFIG] = { .name = NL80211_MULTICAST_GROUP_CONFIG },
  63         [NL80211_MCGRP_SCAN] = { .name = NL80211_MULTICAST_GROUP_SCAN },
  64         [NL80211_MCGRP_REGULATORY] = { .name = NL80211_MULTICAST_GROUP_REG },
  65         [NL80211_MCGRP_MLME] = { .name = NL80211_MULTICAST_GROUP_MLME },
  66         [NL80211_MCGRP_VENDOR] = { .name = NL80211_MULTICAST_GROUP_VENDOR },
  67 #ifdef CONFIG_NL80211_TESTMODE
  68         [NL80211_MCGRP_TESTMODE] = { .name = NL80211_MULTICAST_GROUP_TESTMODE }
  69 #endif
  70 };
  71
  72 /* returns ERR_PTR values */
  73 static struct wireless_dev *
  74 __cfg80211_wdev_from_attrs(struct net *netns, struct nlattr **attrs)
  75 {
  76         struct cfg80211_registered_device *rdev;
  77         struct wireless_dev *result = NULL;
  78         bool have_ifidx = attrs[NL80211_ATTR_IFINDEX];
  79         bool have_wdev_id = attrs[NL80211_ATTR_WDEV];
  80         u64 wdev_id;
  81         int wiphy_idx = -1;
  82         int ifidx = -1;
  83
  84         ASSERT_RTNL();
  85
  86         if (!have_ifidx && !have_wdev_id)
  87                 return ERR_PTR(-EINVAL);
  88
  89         if (have_ifidx)
  90                 ifidx = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
  91         if (have_wdev_id) {
  92                 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
  93                 wiphy_idx = wdev_id >> 32;
  94         }
  95
  96         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
  97                 struct wireless_dev *wdev;
  98
  99                 if (wiphy_net(&rdev->wiphy) != netns)
 100                         continue;
 101
 102                 if (have_wdev_id && rdev->wiphy_idx != wiphy_idx)
 103                         continue;
 104
 105                 list_for_each_entry(wdev, &rdev->wdev_list, list) {
 106                         if (have_ifidx && wdev->netdev &&
 107                             wdev->netdev->ifindex == ifidx) {
 108                                 result = wdev;
 109                                 break;
 110                         }
 111                         if (have_wdev_id && wdev->identifier == (u32)wdev_id) {
 112                                 result = wdev;
 113                                 break;
 114                         }
 115                 }
 116
 117                 if (result)
 118                         break;
 119         }
 120
 121         if (result)
 122                 return result;
 123         return ERR_PTR(-ENODEV);
 124 }
 125
 126 static struct cfg80211_registered_device *
 127 __cfg80211_rdev_from_attrs(struct net *netns, struct nlattr **attrs)
 128 {
 129         struct cfg80211_registered_device *rdev = NULL, *tmp;
 130         struct net_device *netdev;
 131
 132         ASSERT_RTNL();
 133
 134         if (!attrs[NL80211_ATTR_WIPHY] &&
 135             !attrs[NL80211_ATTR_IFINDEX] &&
 136             !attrs[NL80211_ATTR_WDEV])
 137                 return ERR_PTR(-EINVAL);
 138
 139         if (attrs[NL80211_ATTR_WIPHY])
 140                 rdev = cfg80211_rdev_by_wiphy_idx(
 141                                 nla_get_u32(attrs[NL80211_ATTR_WIPHY]));
 142
 143         if (attrs[NL80211_ATTR_WDEV]) {
 144                 u64 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
 145                 struct wireless_dev *wdev;
 146                 bool found = false;
 147
 148                 tmp = cfg80211_rdev_by_wiphy_idx(wdev_id >> 32);
 149                 if (tmp) {
 150                         /* make sure wdev exists */
 151                         list_for_each_entry(wdev, &tmp->wdev_list, list) {
 152                                 if (wdev->identifier != (u32)wdev_id)
 153                                         continue;
 154                                 found = true;
 155                                 break;
 156                         }
 157
 158                         if (!found)
 159                                 tmp = NULL;
 160
 161                         if (rdev && tmp != rdev)
 162                                 return ERR_PTR(-EINVAL);
 163                         rdev = tmp;
 164                 }
 165         }
 166
 167         if (attrs[NL80211_ATTR_IFINDEX]) {
 168                 int ifindex = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
 169                 netdev = __dev_get_by_index(netns, ifindex);
 170                 if (netdev) {
 171                         if (netdev->ieee80211_ptr)
 172                                 tmp = wiphy_to_rdev(
 173                                         netdev->ieee80211_ptr->wiphy);
 174                         else
 175                                 tmp = NULL;
 176
 177                         /* not wireless device -- return error */
 178                         if (!tmp)
 179                                 return ERR_PTR(-EINVAL);
 180
 181                         /* mismatch -- return error */
 182                         if (rdev && tmp != rdev)
 183                                 return ERR_PTR(-EINVAL);
 184
 185                         rdev = tmp;
 186                 }
 187         }
 188
 189         if (!rdev)
 190                 return ERR_PTR(-ENODEV);
 191
 192         if (netns != wiphy_net(&rdev->wiphy))
 193                 return ERR_PTR(-ENODEV);
 194
 195         return rdev;
 196 }
 197
 198 /*
 199  * This function returns a pointer to the driver
 200  * that the genl_info item that is passed refers to.
 201  *
 202  * The result of this can be a PTR_ERR and hence must
 203  * be checked with IS_ERR() for errors.
 204  */
 205 static struct cfg80211_registered_device *
 206 cfg80211_get_dev_from_info(struct net *netns, struct genl_info *info)
 207 {
 208         return __cfg80211_rdev_from_attrs(netns, info->attrs);
 209 }
 210
 211 /* policy for the attributes */
 212 static const struct nla_policy nl80211_policy[NUM_NL80211_ATTR] = {
 213         [NL80211_ATTR_WIPHY] = { .type = NLA_U32 },
 214         [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING,
 215                                       .len = 20-1 },
 216         [NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED },
 217
 218         [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 },
 219         [NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 },
 220         [NL80211_ATTR_CHANNEL_WIDTH] = { .type = NLA_U32 },
 221         [NL80211_ATTR_CENTER_FREQ1] = { .type = NLA_U32 },
 222         [NL80211_ATTR_CENTER_FREQ2] = { .type = NLA_U32 },
 223
 224         [NL80211_ATTR_WIPHY_RETRY_SHORT] = { .type = NLA_U8 },
 225         [NL80211_ATTR_WIPHY_RETRY_LONG] = { .type = NLA_U8 },
 226         [NL80211_ATTR_WIPHY_FRAG_THRESHOLD] = { .type = NLA_U32 },
 227         [NL80211_ATTR_WIPHY_RTS_THRESHOLD] = { .type = NLA_U32 },
 228         [NL80211_ATTR_WIPHY_COVERAGE_CLASS] = { .type = NLA_U8 },
 229         [NL80211_ATTR_WIPHY_DYN_ACK] = { .type = NLA_FLAG },
 230
 231         [NL80211_ATTR_IFTYPE] = { .type = NLA_U32 },
 232         [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 },
 233         [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 },
 234
 235         [NL80211_ATTR_MAC] = { .len = ETH_ALEN },
 236         [NL80211_ATTR_PREV_BSSID] = { .len = ETH_ALEN },
 237
 238         [NL80211_ATTR_KEY] = { .type = NLA_NESTED, },
 239         [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY,
 240                                     .len = WLAN_MAX_KEY_LEN },
 241         [NL80211_ATTR_KEY_IDX] = { .type = NLA_U8 },
 242         [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 },
 243         [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG },
 244         [NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
 245         [NL80211_ATTR_KEY_TYPE] = { .type = NLA_U32 },
 246
 247         [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 },
 248         [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 },
 249         [NL80211_ATTR_BEACON_HEAD] = { .type = NLA_BINARY,
 250                                        .len = IEEE80211_MAX_DATA_LEN },
 251         [NL80211_ATTR_BEACON_TAIL] = { .type = NLA_BINARY,
 252                                        .len = IEEE80211_MAX_DATA_LEN },
 253         [NL80211_ATTR_STA_AID] = { .type = NLA_U16 },
 254         [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED },
 255         [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 },
 256         [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY,
 257                                                .len = NL80211_MAX_SUPP_RATES },
 258         [NL80211_ATTR_STA_PLINK_ACTION] = { .type = NLA_U8 },
 259         [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 },
 260         [NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ },
 261         [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY,
 262                                    .len = IEEE80211_MAX_MESH_ID_LEN },
 263         [NL80211_ATTR_MPATH_NEXT_HOP] = { .type = NLA_U32 },
 264
 265         [NL80211_ATTR_REG_ALPHA2] = { .type = NLA_STRING, .len = 2 },
 266         [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED },
 267
 268         [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 },
 269         [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 },
 270         [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 },
 271         [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY,
 272                                            .len = NL80211_MAX_SUPP_RATES },
 273         [NL80211_ATTR_BSS_HT_OPMODE] = { .type = NLA_U16 },
 274
 275         [NL80211_ATTR_MESH_CONFIG] = { .type = NLA_NESTED },
 276         [NL80211_ATTR_SUPPORT_MESH_AUTH] = { .type = NLA_FLAG },
 277
 278         [NL80211_ATTR_HT_CAPABILITY] = { .len = NL80211_HT_CAPABILITY_LEN },
 279
 280         [NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 },
 281         [NL80211_ATTR_IE] = { .type = NLA_BINARY,
 282                               .len = IEEE80211_MAX_DATA_LEN },
 283         [NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED },
 284         [NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED },
 285
 286         [NL80211_ATTR_SSID] = { .type = NLA_BINARY,
 287                                 .len = IEEE80211_MAX_SSID_LEN },
 288         [NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 },
 289         [NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 },
 290         [NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG },
 291         [NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG },
 292         [NL80211_ATTR_USE_MFP] = { .type = NLA_U32 },
 293         [NL80211_ATTR_STA_FLAGS2] = {
 294                 .len = sizeof(struct nl80211_sta_flag_update),
 295         },
 296         [NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG },
 297         [NL80211_ATTR_CONTROL_PORT_ETHERTYPE] = { .type = NLA_U16 },
 298         [NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT] = { .type = NLA_FLAG },
 299         [NL80211_ATTR_PRIVACY] = { .type = NLA_FLAG },
 300         [NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 },
 301         [NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 },
 302         [NL80211_ATTR_PID] = { .type = NLA_U32 },
 303         [NL80211_ATTR_4ADDR] = { .type = NLA_U8 },
 304         [NL80211_ATTR_PMKID] = { .type = NLA_BINARY,
 305                                  .len = WLAN_PMKID_LEN },
 306         [NL80211_ATTR_DURATION] = { .type = NLA_U32 },
 307         [NL80211_ATTR_COOKIE] = { .type = NLA_U64 },
 308         [NL80211_ATTR_TX_RATES] = { .type = NLA_NESTED },
 309         [NL80211_ATTR_FRAME] = { .type = NLA_BINARY,
 310                                  .len = IEEE80211_MAX_DATA_LEN },
 311         [NL80211_ATTR_FRAME_MATCH] = { .type = NLA_BINARY, },
 312         [NL80211_ATTR_PS_STATE] = { .type = NLA_U32 },
 313         [NL80211_ATTR_CQM] = { .type = NLA_NESTED, },
 314         [NL80211_ATTR_LOCAL_STATE_CHANGE] = { .type = NLA_FLAG },
 315         [NL80211_ATTR_AP_ISOLATE] = { .type = NLA_U8 },
 316         [NL80211_ATTR_WIPHY_TX_POWER_SETTING] = { .type = NLA_U32 },
 317         [NL80211_ATTR_WIPHY_TX_POWER_LEVEL] = { .type = NLA_U32 },
 318         [NL80211_ATTR_FRAME_TYPE] = { .type = NLA_U16 },
 319         [NL80211_ATTR_WIPHY_ANTENNA_TX] = { .type = NLA_U32 },
 320         [NL80211_ATTR_WIPHY_ANTENNA_RX] = { .type = NLA_U32 },
 321         [NL80211_ATTR_MCAST_RATE] = { .type = NLA_U32 },
 322         [NL80211_ATTR_OFFCHANNEL_TX_OK] = { .type = NLA_FLAG },
 323         [NL80211_ATTR_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
 324         [NL80211_ATTR_WOWLAN_TRIGGERS] = { .type = NLA_NESTED },
 325         [NL80211_ATTR_STA_PLINK_STATE] = { .type = NLA_U8 },
 326         [NL80211_ATTR_SCHED_SCAN_INTERVAL] = { .type = NLA_U32 },
 327         [NL80211_ATTR_REKEY_DATA] = { .type = NLA_NESTED },
 328         [NL80211_ATTR_SCAN_SUPP_RATES] = { .type = NLA_NESTED },
 329         [NL80211_ATTR_HIDDEN_SSID] = { .type = NLA_U32 },
 330         [NL80211_ATTR_IE_PROBE_RESP] = { .type = NLA_BINARY,
 331                                          .len = IEEE80211_MAX_DATA_LEN },
 332         [NL80211_ATTR_IE_ASSOC_RESP] = { .type = NLA_BINARY,
 333                                          .len = IEEE80211_MAX_DATA_LEN },
 334         [NL80211_ATTR_ROAM_SUPPORT] = { .type = NLA_FLAG },
 335         [NL80211_ATTR_SCHED_SCAN_MATCH] = { .type = NLA_NESTED },
 336         [NL80211_ATTR_TX_NO_CCK_RATE] = { .type = NLA_FLAG },
 337         [NL80211_ATTR_TDLS_ACTION] = { .type = NLA_U8 },
 338         [NL80211_ATTR_TDLS_DIALOG_TOKEN] = { .type = NLA_U8 },
 339         [NL80211_ATTR_TDLS_OPERATION] = { .type = NLA_U8 },
 340         [NL80211_ATTR_TDLS_SUPPORT] = { .type = NLA_FLAG },
 341         [NL80211_ATTR_TDLS_EXTERNAL_SETUP] = { .type = NLA_FLAG },
 342         [NL80211_ATTR_TDLS_INITIATOR] = { .type = NLA_FLAG },
 343         [NL80211_ATTR_DONT_WAIT_FOR_ACK] = { .type = NLA_FLAG },
 344         [NL80211_ATTR_PROBE_RESP] = { .type = NLA_BINARY,
 345                                       .len = IEEE80211_MAX_DATA_LEN },
 346         [NL80211_ATTR_DFS_REGION] = { .type = NLA_U8 },
 347         [NL80211_ATTR_DISABLE_HT] = { .type = NLA_FLAG },
 348         [NL80211_ATTR_HT_CAPABILITY_MASK] = {
 349                 .len = NL80211_HT_CAPABILITY_LEN
 350         },
 351         [NL80211_ATTR_NOACK_MAP] = { .type = NLA_U16 },
 352         [NL80211_ATTR_INACTIVITY_TIMEOUT] = { .type = NLA_U16 },
 353         [NL80211_ATTR_BG_SCAN_PERIOD] = { .type = NLA_U16 },
 354         [NL80211_ATTR_WDEV] = { .type = NLA_U64 },
 355         [NL80211_ATTR_USER_REG_HINT_TYPE] = { .type = NLA_U32 },
 356         [NL80211_ATTR_SAE_DATA] = { .type = NLA_BINARY, },
 357         [NL80211_ATTR_VHT_CAPABILITY] = { .len = NL80211_VHT_CAPABILITY_LEN },
 358         [NL80211_ATTR_SCAN_FLAGS] = { .type = NLA_U32 },
 359         [NL80211_ATTR_P2P_CTWINDOW] = { .type = NLA_U8 },
 360         [NL80211_ATTR_P2P_OPPPS] = { .type = NLA_U8 },
 361         [NL80211_ATTR_ACL_POLICY] = {. type = NLA_U32 },
 362         [NL80211_ATTR_MAC_ADDRS] = { .type = NLA_NESTED },
 363         [NL80211_ATTR_STA_CAPABILITY] = { .type = NLA_U16 },
 364         [NL80211_ATTR_STA_EXT_CAPABILITY] = { .type = NLA_BINARY, },
 365         [NL80211_ATTR_SPLIT_WIPHY_DUMP] = { .type = NLA_FLAG, },
 366         [NL80211_ATTR_DISABLE_VHT] = { .type = NLA_FLAG },
 367         [NL80211_ATTR_VHT_CAPABILITY_MASK] = {
 368                 .len = NL80211_VHT_CAPABILITY_LEN,
 369         },
 370         [NL80211_ATTR_MDID] = { .type = NLA_U16 },
 371         [NL80211_ATTR_IE_RIC] = { .type = NLA_BINARY,
 372                                   .len = IEEE80211_MAX_DATA_LEN },
 373         [NL80211_ATTR_PEER_AID] = { .type = NLA_U16 },
 374         [NL80211_ATTR_CH_SWITCH_COUNT] = { .type = NLA_U32 },
 375         [NL80211_ATTR_CH_SWITCH_BLOCK_TX] = { .type = NLA_FLAG },
 376         [NL80211_ATTR_CSA_IES] = { .type = NLA_NESTED },
 377         [NL80211_ATTR_CSA_C_OFF_BEACON] = { .type = NLA_BINARY },
 378         [NL80211_ATTR_CSA_C_OFF_PRESP] = { .type = NLA_BINARY },
 379         [NL80211_ATTR_STA_SUPPORTED_CHANNELS] = { .type = NLA_BINARY },
 380         [NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES] = { .type = NLA_BINARY },
 381         [NL80211_ATTR_HANDLE_DFS] = { .type = NLA_FLAG },
 382         [NL80211_ATTR_OPMODE_NOTIF] = { .type = NLA_U8 },
 383         [NL80211_ATTR_VENDOR_ID] = { .type = NLA_U32 },
 384         [NL80211_ATTR_VENDOR_SUBCMD] = { .type = NLA_U32 },
 385         [NL80211_ATTR_VENDOR_DATA] = { .type = NLA_BINARY },
 386         [NL80211_ATTR_QOS_MAP] = { .type = NLA_BINARY,
 387                                    .len = IEEE80211_QOS_MAP_LEN_MAX },
 388         [NL80211_ATTR_MAC_HINT] = { .len = ETH_ALEN },
 389         [NL80211_ATTR_WIPHY_FREQ_HINT] = { .type = NLA_U32 },
 390         [NL80211_ATTR_TDLS_PEER_CAPABILITY] = { .type = NLA_U32 },
 391         [NL80211_ATTR_SOCKET_OWNER] = { .type = NLA_FLAG },
 392         [NL80211_ATTR_CSA_C_OFFSETS_TX] = { .type = NLA_BINARY },
 393         [NL80211_ATTR_USE_RRM] = { .type = NLA_FLAG },
 394         [NL80211_ATTR_TSID] = { .type = NLA_U8 },
 395         [NL80211_ATTR_USER_PRIO] = { .type = NLA_U8 },
 396         [NL80211_ATTR_ADMITTED_TIME] = { .type = NLA_U16 },
 397         [NL80211_ATTR_SMPS_MODE] = { .type = NLA_U8 },
 398         [NL80211_ATTR_MAC_MASK] = { .len = ETH_ALEN },
 399         [NL80211_ATTR_WIPHY_SELF_MANAGED_REG] = { .type = NLA_FLAG },
 400 };
 401
 402 /* policy for the key attributes */
 403 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = {
 404         [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN },
 405         [NL80211_KEY_IDX] = { .type = NLA_U8 },
 406         [NL80211_KEY_CIPHER] = { .type = NLA_U32 },
 407         [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
 408         [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG },
 409         [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG },
 410         [NL80211_KEY_TYPE] = { .type = NLA_U32 },
 411         [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
 412 };
 413
 414 /* policy for the key default flags */
 415 static const struct nla_policy
 416 nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = {
 417         [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG },
 418         [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG },
 419 };
 420
 421 /* policy for WoWLAN attributes */
 422 static const struct nla_policy
 423 nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = {
 424         [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG },
 425         [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG },
 426         [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG },
 427         [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED },
 428         [NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG },
 429         [NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG },
 430         [NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG },
 431         [NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG },
 432         [NL80211_WOWLAN_TRIG_TCP_CONNECTION] = { .type = NLA_NESTED },
 433         [NL80211_WOWLAN_TRIG_NET_DETECT] = { .type = NLA_NESTED },
 434 };
 435
 436 static const struct nla_policy
 437 nl80211_wowlan_tcp_policy[NUM_NL80211_WOWLAN_TCP] = {
 438         [NL80211_WOWLAN_TCP_SRC_IPV4] = { .type = NLA_U32 },
 439         [NL80211_WOWLAN_TCP_DST_IPV4] = { .type = NLA_U32 },
 440         [NL80211_WOWLAN_TCP_DST_MAC] = { .len = ETH_ALEN },
 441         [NL80211_WOWLAN_TCP_SRC_PORT] = { .type = NLA_U16 },
 442         [NL80211_WOWLAN_TCP_DST_PORT] = { .type = NLA_U16 },
 443         [NL80211_WOWLAN_TCP_DATA_PAYLOAD] = { .len = 1 },
 444         [NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ] = {
 445                 .len = sizeof(struct nl80211_wowlan_tcp_data_seq)
 446         },
 447         [NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN] = {
 448                 .len = sizeof(struct nl80211_wowlan_tcp_data_token)
 449         },
 450         [NL80211_WOWLAN_TCP_DATA_INTERVAL] = { .type = NLA_U32 },
 451         [NL80211_WOWLAN_TCP_WAKE_PAYLOAD] = { .len = 1 },
 452         [NL80211_WOWLAN_TCP_WAKE_MASK] = { .len = 1 },
 453 };
 454
 455 /* policy for coalesce rule attributes */
 456 static const struct nla_policy
 457 nl80211_coalesce_policy[NUM_NL80211_ATTR_COALESCE_RULE] = {
 458         [NL80211_ATTR_COALESCE_RULE_DELAY] = { .type = NLA_U32 },
 459         [NL80211_ATTR_COALESCE_RULE_CONDITION] = { .type = NLA_U32 },
 460         [NL80211_ATTR_COALESCE_RULE_PKT_PATTERN] = { .type = NLA_NESTED },
 461 };
 462
 463 /* policy for GTK rekey offload attributes */
 464 static const struct nla_policy
 465 nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = {
 466         [NL80211_REKEY_DATA_KEK] = { .len = NL80211_KEK_LEN },
 467         [NL80211_REKEY_DATA_KCK] = { .len = NL80211_KCK_LEN },
 468         [NL80211_REKEY_DATA_REPLAY_CTR] = { .len = NL80211_REPLAY_CTR_LEN },
 469 };
 470
 471 static const struct nla_policy
 472 nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = {
 473         [NL80211_SCHED_SCAN_MATCH_ATTR_SSID] = { .type = NLA_BINARY,
 474                                                  .len = IEEE80211_MAX_SSID_LEN },
 475         [NL80211_SCHED_SCAN_MATCH_ATTR_RSSI] = { .type = NLA_U32 },
 476 };
 477
 478 static int nl80211_prepare_wdev_dump(struct sk_buff *skb,
 479                                      struct netlink_callback *cb,
 480                                      struct cfg80211_registered_device **rdev,
 481                                      struct wireless_dev **wdev)
 482 {
 483         int err;
 484
 485         rtnl_lock();
 486
 487         if (!cb->args[0]) {
 488                 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
 489                                   nl80211_fam.attrbuf, nl80211_fam.maxattr,
 490                                   nl80211_policy);
 491                 if (err)
 492                         goto out_unlock;
 493
 494                 *wdev = __cfg80211_wdev_from_attrs(sock_net(skb->sk),
 495                                                    nl80211_fam.attrbuf);
 496                 if (IS_ERR(*wdev)) {
 497                         err = PTR_ERR(*wdev);
 498                         goto out_unlock;
 499                 }
 500                 *rdev = wiphy_to_rdev((*wdev)->wiphy);
 501                 /* 0 is the first index - add 1 to parse only once */
 502                 cb->args[0] = (*rdev)->wiphy_idx + 1;
 503                 cb->args[1] = (*wdev)->identifier;
 504         } else {
 505                 /* subtract the 1 again here */
 506                 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
 507                 struct wireless_dev *tmp;
 508
 509                 if (!wiphy) {
 510                         err = -ENODEV;
 511                         goto out_unlock;
 512                 }
 513                 *rdev = wiphy_to_rdev(wiphy);
 514                 *wdev = NULL;
 515
 516                 list_for_each_entry(tmp, &(*rdev)->wdev_list, list) {
 517                         if (tmp->identifier == cb->args[1]) {
 518                                 *wdev = tmp;
 519                                 break;
 520                         }
 521                 }
 522
 523                 if (!*wdev) {
 524                         err = -ENODEV;
 525                         goto out_unlock;
 526                 }
 527         }
 528
 529         return 0;
 530  out_unlock:
 531         rtnl_unlock();
 532         return err;
 533 }
 534
 535 static void nl80211_finish_wdev_dump(struct cfg80211_registered_device *rdev)
 536 {
 537         rtnl_unlock();
 538 }
 539
 540 /* IE validation */
 541 static bool is_valid_ie_attr(const struct nlattr *attr)
 542 {
 543         const u8 *pos;
 544         int len;
 545
 546         if (!attr)
 547                 return true;
 548
 549         pos = nla_data(attr);
 550         len = nla_len(attr);
 551
 552         while (len) {
 553                 u8 elemlen;
 554
 555                 if (len < 2)
 556                         return false;
 557                 len -= 2;
 558
 559                 elemlen = pos[1];
 560                 if (elemlen > len)
 561                         return false;
 562
 563                 len -= elemlen;
 564                 pos += 2 + elemlen;
 565         }
 566
 567         return true;
 568 }
 569
 570 /* message building helper */
 571 static inline void *nl80211hdr_put(struct sk_buff *skb, u32 portid, u32 seq,
 572                                    int flags, u8 cmd)
 573 {
 574         /* since there is no private header just add the generic one */
 575         return genlmsg_put(skb, portid, seq, &nl80211_fam, flags, cmd);
 576 }
 577
 578 static int nl80211_msg_put_channel(struct sk_buff *msg,
 579                                    struct ieee80211_channel *chan,
 580                                    bool large)
 581 {
 582         /* Some channels must be completely excluded from the
 583          * list to protect old user-space tools from breaking
 584          */
 585         if (!large && chan->flags &
 586             (IEEE80211_CHAN_NO_10MHZ | IEEE80211_CHAN_NO_20MHZ))
 587                 return 0;
 588
 589         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ,
 590                         chan->center_freq))
 591                 goto nla_put_failure;
 592
 593         if ((chan->flags & IEEE80211_CHAN_DISABLED) &&
 594             nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED))
 595                 goto nla_put_failure;
 596         if (chan->flags & IEEE80211_CHAN_NO_IR) {
 597                 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IR))
 598                         goto nla_put_failure;
 599                 if (nla_put_flag(msg, __NL80211_FREQUENCY_ATTR_NO_IBSS))
 600                         goto nla_put_failure;
 601         }
 602         if (chan->flags & IEEE80211_CHAN_RADAR) {
 603                 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR))
 604                         goto nla_put_failure;
 605                 if (large) {
 606                         u32 time;
 607
 608                         time = elapsed_jiffies_msecs(chan->dfs_state_entered);
 609
 610                         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_STATE,
 611                                         chan->dfs_state))
 612                                 goto nla_put_failure;
 613                         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_TIME,
 614                                         time))
 615                                 goto nla_put_failure;
 616                         if (nla_put_u32(msg,
 617                                         NL80211_FREQUENCY_ATTR_DFS_CAC_TIME,
 618                                         chan->dfs_cac_ms))
 619                                 goto nla_put_failure;
 620                 }
 621         }
 622
 623         if (large) {
 624                 if ((chan->flags & IEEE80211_CHAN_NO_HT40MINUS) &&
 625                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_MINUS))
 626                         goto nla_put_failure;
 627                 if ((chan->flags & IEEE80211_CHAN_NO_HT40PLUS) &&
 628                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_PLUS))
 629                         goto nla_put_failure;
 630                 if ((chan->flags & IEEE80211_CHAN_NO_80MHZ) &&
 631                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_80MHZ))
 632                         goto nla_put_failure;
 633                 if ((chan->flags & IEEE80211_CHAN_NO_160MHZ) &&
 634                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_160MHZ))
 635                         goto nla_put_failure;
 636                 if ((chan->flags & IEEE80211_CHAN_INDOOR_ONLY) &&
 637                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_INDOOR_ONLY))
 638                         goto nla_put_failure;
 639                 if ((chan->flags & IEEE80211_CHAN_GO_CONCURRENT) &&
 640                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_GO_CONCURRENT))
 641                         goto nla_put_failure;
 642                 if ((chan->flags & IEEE80211_CHAN_NO_20MHZ) &&
 643                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_20MHZ))
 644                         goto nla_put_failure;
 645                 if ((chan->flags & IEEE80211_CHAN_NO_10MHZ) &&
 646                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_10MHZ))
 647                         goto nla_put_failure;
 648         }
 649
 650         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
 651                         DBM_TO_MBM(chan->max_power)))
 652                 goto nla_put_failure;
 653
 654         return 0;
 655
 656  nla_put_failure:
 657         return -ENOBUFS;
 658 }
 659
 660 /* netlink command implementations */
 661
 662 struct key_parse {
 663         struct key_params p;
 664         int idx;
 665         int type;
 666         bool def, defmgmt;
 667         bool def_uni, def_multi;
 668 };
 669
 670 static int nl80211_parse_key_new(struct nlattr *key, struct key_parse *k)
 671 {
 672         struct nlattr *tb[NL80211_KEY_MAX + 1];
 673         int err = nla_parse_nested(tb, NL80211_KEY_MAX, key,
 674                                    nl80211_key_policy);
 675         if (err)
 676                 return err;
 677
 678         k->def = !!tb[NL80211_KEY_DEFAULT];
 679         k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];
 680
 681         if (k->def) {
 682                 k->def_uni = true;
 683                 k->def_multi = true;
 684         }
 685         if (k->defmgmt)
 686                 k->def_multi = true;
 687
 688         if (tb[NL80211_KEY_IDX])
 689                 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);
 690
 691         if (tb[NL80211_KEY_DATA]) {
 692                 k->p.key = nla_data(tb[NL80211_KEY_DATA]);
 693                 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
 694         }
 695
 696         if (tb[NL80211_KEY_SEQ]) {
 697                 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
 698                 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
 699         }
 700
 701         if (tb[NL80211_KEY_CIPHER])
 702                 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);
 703
 704         if (tb[NL80211_KEY_TYPE]) {
 705                 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]);
 706                 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
 707                         return -EINVAL;
 708         }
 709
 710         if (tb[NL80211_KEY_DEFAULT_TYPES]) {
 711                 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
 712                 err = nla_parse_nested(kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
 713                                        tb[NL80211_KEY_DEFAULT_TYPES],
 714                                        nl80211_key_default_policy);
 715                 if (err)
 716                         return err;
 717
 718                 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
 719                 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
 720         }
 721
 722         return 0;
 723 }
 724
 725 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k)
 726 {
 727         if (info->attrs[NL80211_ATTR_KEY_DATA]) {
 728                 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
 729                 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
 730         }
 731
 732         if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
 733                 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
 734                 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
 735         }
 736
 737         if (info->attrs[NL80211_ATTR_KEY_IDX])
 738                 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
 739
 740         if (info->attrs[NL80211_ATTR_KEY_CIPHER])
 741                 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
 742
 743         k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
 744         k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT];
 745
 746         if (k->def) {
 747                 k->def_uni = true;
 748                 k->def_multi = true;
 749         }
 750         if (k->defmgmt)
 751                 k->def_multi = true;
 752
 753         if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
 754                 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
 755                 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
 756                         return -EINVAL;
 757         }
 758
 759         if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) {
 760                 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
 761                 int err = nla_parse_nested(
 762                                 kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
 763                                 info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES],
 764                                 nl80211_key_default_policy);
 765                 if (err)
 766                         return err;
 767
 768                 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
 769                 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
 770         }
 771
 772         return 0;
 773 }
 774
 775 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
 776 {
 777         int err;
 778
 779         memset(k, 0, sizeof(*k));
 780         k->idx = -1;
 781         k->type = -1;
 782
 783         if (info->attrs[NL80211_ATTR_KEY])
 784                 err = nl80211_parse_key_new(info->attrs[NL80211_ATTR_KEY], k);
 785         else
 786                 err = nl80211_parse_key_old(info, k);
 787
 788         if (err)
 789                 return err;
 790
 791         if (k->def && k->defmgmt)
 792                 return -EINVAL;
 793
 794         if (k->defmgmt) {
 795                 if (k->def_uni || !k->def_multi)
 796                         return -EINVAL;
 797         }
 798
 799         if (k->idx != -1) {
 800                 if (k->defmgmt) {
 801                         if (k->idx < 4 || k->idx > 5)
 802                                 return -EINVAL;
 803                 } else if (k->def) {
 804                         if (k->idx < 0 || k->idx > 3)
 805                                 return -EINVAL;
 806                 } else {
 807                         if (k->idx < 0 || k->idx > 5)
 808                                 return -EINVAL;
 809                 }
 810         }
 811
 812         return 0;
 813 }
 814
 815 static struct cfg80211_cached_keys *
 816 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
 817                        struct nlattr *keys, bool *no_ht)
 818 {
 819         struct key_parse parse;
 820         struct nlattr *key;
 821         struct cfg80211_cached_keys *result;
 822         int rem, err, def = 0;
 823
 824         result = kzalloc(sizeof(*result), GFP_KERNEL);
 825         if (!result)
 826                 return ERR_PTR(-ENOMEM);
 827
 828         result->def = -1;
 829         result->defmgmt = -1;
 830
 831         nla_for_each_nested(key, keys, rem) {
 832                 memset(&parse, 0, sizeof(parse));
 833                 parse.idx = -1;
 834
 835                 err = nl80211_parse_key_new(key, &parse);
 836                 if (err)
 837                         goto error;
 838                 err = -EINVAL;
 839                 if (!parse.p.key)
 840                         goto error;
 841                 if (parse.idx < 0 || parse.idx > 4)
 842                         goto error;
 843                 if (parse.def) {
 844                         if (def)
 845                                 goto error;
 846                         def = 1;
 847                         result->def = parse.idx;
 848                         if (!parse.def_uni || !parse.def_multi)
 849                                 goto error;
 850                 } else if (parse.defmgmt)
 851                         goto error;
 852                 err = cfg80211_validate_key_settings(rdev, &parse.p,
 853                                                      parse.idx, false, NULL);
 854                 if (err)
 855                         goto error;
 856                 result->params[parse.idx].cipher = parse.p.cipher;
 857                 result->params[parse.idx].key_len = parse.p.key_len;
 858                 result->params[parse.idx].key = result->data[parse.idx];
 859                 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
 860
 861                 if (parse.p.cipher == WLAN_CIPHER_SUITE_WEP40 ||
 862                     parse.p.cipher == WLAN_CIPHER_SUITE_WEP104) {
 863                         if (no_ht)
 864                                 *no_ht = true;
 865                 }
 866         }
 867
 868         return result;
 869  error:
 870         kfree(result);
 871         return ERR_PTR(err);
 872 }
 873
 874 static int nl80211_key_allowed(struct wireless_dev *wdev)
 875 {
 876         ASSERT_WDEV_LOCK(wdev);
 877
 878         switch (wdev->iftype) {
 879         case NL80211_IFTYPE_AP:
 880         case NL80211_IFTYPE_AP_VLAN:
 881         case NL80211_IFTYPE_P2P_GO:
 882         case NL80211_IFTYPE_MESH_POINT:
 883                 break;
 884         case NL80211_IFTYPE_ADHOC:
 885         case NL80211_IFTYPE_STATION:
 886         case NL80211_IFTYPE_P2P_CLIENT:
 887                 if (!wdev->current_bss)
 888                         return -ENOLINK;
 889                 break;
 890         case NL80211_IFTYPE_UNSPECIFIED:
 891         case NL80211_IFTYPE_OCB:
 892         case NL80211_IFTYPE_MONITOR:
 893         case NL80211_IFTYPE_P2P_DEVICE:
 894         case NL80211_IFTYPE_WDS:
 895         case NUM_NL80211_IFTYPES:
 896                 return -EINVAL;
 897         }
 898
 899         return 0;
 900 }
 901
 902 static struct ieee80211_channel *nl80211_get_valid_chan(struct wiphy *wiphy,
 903                                                         struct nlattr *tb)
 904 {
 905         struct ieee80211_channel *chan;
 906
 907         if (tb == NULL)
 908                 return NULL;
 909         chan = ieee80211_get_channel(wiphy, nla_get_u32(tb));
 910         if (!chan || chan->flags & IEEE80211_CHAN_DISABLED)
 911                 return NULL;
 912         return chan;
 913 }
 914
 915 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes)
 916 {
 917         struct nlattr *nl_modes = nla_nest_start(msg, attr);
 918         int i;
 919
 920         if (!nl_modes)
 921                 goto nla_put_failure;
 922
 923         i = 0;
 924         while (ifmodes) {
 925                 if ((ifmodes & 1) && nla_put_flag(msg, i))
 926                         goto nla_put_failure;
 927                 ifmodes >>= 1;
 928                 i++;
 929         }
 930
 931         nla_nest_end(msg, nl_modes);
 932         return 0;
 933
 934 nla_put_failure:
 935         return -ENOBUFS;
 936 }
 937
 938 static int nl80211_put_iface_combinations(struct wiphy *wiphy,
 939                                           struct sk_buff *msg,
 940                                           bool large)
 941 {
 942         struct nlattr *nl_combis;
 943         int i, j;
 944
 945         nl_combis = nla_nest_start(msg,
 946                                 NL80211_ATTR_INTERFACE_COMBINATIONS);
 947         if (!nl_combis)
 948                 goto nla_put_failure;
 949
 950         for (i = 0; i < wiphy->n_iface_combinations; i++) {
 951                 const struct ieee80211_iface_combination *c;
 952                 struct nlattr *nl_combi, *nl_limits;
 953
 954                 c = &wiphy->iface_combinations[i];
 955
 956                 nl_combi = nla_nest_start(msg, i + 1);
 957                 if (!nl_combi)
 958                         goto nla_put_failure;
 959
 960                 nl_limits = nla_nest_start(msg, NL80211_IFACE_COMB_LIMITS);
 961                 if (!nl_limits)
 962                         goto nla_put_failure;
 963
 964                 for (j = 0; j < c->n_limits; j++) {
 965                         struct nlattr *nl_limit;
 966
 967                         nl_limit = nla_nest_start(msg, j + 1);
 968                         if (!nl_limit)
 969                                 goto nla_put_failure;
 970                         if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX,
 971                                         c->limits[j].max))
 972                                 goto nla_put_failure;
 973                         if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES,
 974                                                 c->limits[j].types))
 975                                 goto nla_put_failure;
 976                         nla_nest_end(msg, nl_limit);
 977                 }
 978
 979                 nla_nest_end(msg, nl_limits);
 980
 981                 if (c->beacon_int_infra_match &&
 982                     nla_put_flag(msg, NL80211_IFACE_COMB_STA_AP_BI_MATCH))
 983                         goto nla_put_failure;
 984                 if (nla_put_u32(msg, NL80211_IFACE_COMB_NUM_CHANNELS,
 985                                 c->num_different_channels) ||
 986                     nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM,
 987                                 c->max_interfaces))
 988                         goto nla_put_failure;
 989                 if (large &&
 990                     (nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS,
 991                                 c->radar_detect_widths) ||
 992                      nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_REGIONS,
 993                                 c->radar_detect_regions)))
 994                         goto nla_put_failure;
 995
 996                 nla_nest_end(msg, nl_combi);
 997         }
 998
 999         nla_nest_end(msg, nl_combis);
1000
1001         return 0;
1002 nla_put_failure:
1003         return -ENOBUFS;
1004 }
1005
1006 #ifdef CONFIG_PM
1007 static int nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device *rdev,
1008                                         struct sk_buff *msg)
1009 {
1010         const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan->tcp;
1011         struct nlattr *nl_tcp;
1012
1013         if (!tcp)
1014                 return 0;
1015
1016         nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
1017         if (!nl_tcp)
1018                 return -ENOBUFS;
1019
1020         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1021                         tcp->data_payload_max))
1022                 return -ENOBUFS;
1023
1024         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1025                         tcp->data_payload_max))
1026                 return -ENOBUFS;
1027
1028         if (tcp->seq && nla_put_flag(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ))
1029                 return -ENOBUFS;
1030
1031         if (tcp->tok && nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
1032                                 sizeof(*tcp->tok), tcp->tok))
1033                 return -ENOBUFS;
1034
1035         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
1036                         tcp->data_interval_max))
1037                 return -ENOBUFS;
1038
1039         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
1040                         tcp->wake_payload_max))
1041                 return -ENOBUFS;
1042
1043         nla_nest_end(msg, nl_tcp);
1044         return 0;
1045 }
1046
1047 static int nl80211_send_wowlan(struct sk_buff *msg,
1048                                struct cfg80211_registered_device *rdev,
1049                                bool large)
1050 {
1051         struct nlattr *nl_wowlan;
1052
1053         if (!rdev->wiphy.wowlan)
1054                 return 0;
1055
1056         nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED);
1057         if (!nl_wowlan)
1058                 return -ENOBUFS;
1059
1060         if (((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_ANY) &&
1061              nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
1062             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_DISCONNECT) &&
1063              nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
1064             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT) &&
1065              nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
1066             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) &&
1067              nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) ||
1068             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) &&
1069              nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
1070             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) &&
1071              nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
1072             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) &&
1073              nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
1074             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE) &&
1075              nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
1076                 return -ENOBUFS;
1077
1078         if (rdev->wiphy.wowlan->n_patterns) {
1079                 struct nl80211_pattern_support pat = {
1080                         .max_patterns = rdev->wiphy.wowlan->n_patterns,
1081                         .min_pattern_len = rdev->wiphy.wowlan->pattern_min_len,
1082                         .max_pattern_len = rdev->wiphy.wowlan->pattern_max_len,
1083                         .max_pkt_offset = rdev->wiphy.wowlan->max_pkt_offset,
1084                 };
1085
1086                 if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
1087                             sizeof(pat), &pat))
1088                         return -ENOBUFS;
1089         }
1090
1091         if ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_NET_DETECT) &&
1092             nla_put_u32(msg, NL80211_WOWLAN_TRIG_NET_DETECT,
1093                         rdev->wiphy.wowlan->max_nd_match_sets))
1094                 return -ENOBUFS;
1095
1096         if (large && nl80211_send_wowlan_tcp_caps(rdev, msg))
1097                 return -ENOBUFS;
1098
1099         /* TODO: send wowlan net detect */
1100
1101         nla_nest_end(msg, nl_wowlan);
1102
1103         return 0;
1104 }
1105 #endif
1106
1107 static int nl80211_send_coalesce(struct sk_buff *msg,
1108                                  struct cfg80211_registered_device *rdev)
1109 {
1110         struct nl80211_coalesce_rule_support rule;
1111
1112         if (!rdev->wiphy.coalesce)
1113                 return 0;
1114
1115         rule.max_rules = rdev->wiphy.coalesce->n_rules;
1116         rule.max_delay = rdev->wiphy.coalesce->max_delay;
1117         rule.pat.max_patterns = rdev->wiphy.coalesce->n_patterns;
1118         rule.pat.min_pattern_len = rdev->wiphy.coalesce->pattern_min_len;
1119         rule.pat.max_pattern_len = rdev->wiphy.coalesce->pattern_max_len;
1120         rule.pat.max_pkt_offset = rdev->wiphy.coalesce->max_pkt_offset;
1121
1122         if (nla_put(msg, NL80211_ATTR_COALESCE_RULE, sizeof(rule), &rule))
1123                 return -ENOBUFS;
1124
1125         return 0;
1126 }
1127
1128 static int nl80211_send_band_rateinfo(struct sk_buff *msg,
1129                                       struct ieee80211_supported_band *sband)
1130 {
1131         struct nlattr *nl_rates, *nl_rate;
1132         struct ieee80211_rate *rate;
1133         int i;
1134
1135         /* add HT info */
1136         if (sband->ht_cap.ht_supported &&
1137             (nla_put(msg, NL80211_BAND_ATTR_HT_MCS_SET,
1138                      sizeof(sband->ht_cap.mcs),
1139                      &sband->ht_cap.mcs) ||
1140              nla_put_u16(msg, NL80211_BAND_ATTR_HT_CAPA,
1141                          sband->ht_cap.cap) ||
1142              nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
1143                         sband->ht_cap.ampdu_factor) ||
1144              nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
1145                         sband->ht_cap.ampdu_density)))
1146                 return -ENOBUFS;
1147
1148         /* add VHT info */
1149         if (sband->vht_cap.vht_supported &&
1150             (nla_put(msg, NL80211_BAND_ATTR_VHT_MCS_SET,
1151                      sizeof(sband->vht_cap.vht_mcs),
1152                      &sband->vht_cap.vht_mcs) ||
1153              nla_put_u32(msg, NL80211_BAND_ATTR_VHT_CAPA,
1154                          sband->vht_cap.cap)))
1155                 return -ENOBUFS;
1156
1157         /* add bitrates */
1158         nl_rates = nla_nest_start(msg, NL80211_BAND_ATTR_RATES);
1159         if (!nl_rates)
1160                 return -ENOBUFS;
1161
1162         for (i = 0; i < sband->n_bitrates; i++) {
1163                 nl_rate = nla_nest_start(msg, i);
1164                 if (!nl_rate)
1165                         return -ENOBUFS;
1166
1167                 rate = &sband->bitrates[i];
1168                 if (nla_put_u32(msg, NL80211_BITRATE_ATTR_RATE,
1169                                 rate->bitrate))
1170                         return -ENOBUFS;
1171                 if ((rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) &&
1172                     nla_put_flag(msg,
1173                                  NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE))
1174                         return -ENOBUFS;
1175
1176                 nla_nest_end(msg, nl_rate);
1177         }
1178
1179         nla_nest_end(msg, nl_rates);
1180
1181         return 0;
1182 }
1183
1184 static int
1185 nl80211_send_mgmt_stypes(struct sk_buff *msg,
1186                          const struct ieee80211_txrx_stypes *mgmt_stypes)
1187 {
1188         u16 stypes;
1189         struct nlattr *nl_ftypes, *nl_ifs;
1190         enum nl80211_iftype ift;
1191         int i;
1192
1193         if (!mgmt_stypes)
1194                 return 0;
1195
1196         nl_ifs = nla_nest_start(msg, NL80211_ATTR_TX_FRAME_TYPES);
1197         if (!nl_ifs)
1198                 return -ENOBUFS;
1199
1200         for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1201                 nl_ftypes = nla_nest_start(msg, ift);
1202                 if (!nl_ftypes)
1203                         return -ENOBUFS;
1204                 i = 0;
1205                 stypes = mgmt_stypes[ift].tx;
1206                 while (stypes) {
1207                         if ((stypes & 1) &&
1208                             nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1209                                         (i << 4) | IEEE80211_FTYPE_MGMT))
1210                                 return -ENOBUFS;
1211                         stypes >>= 1;
1212                         i++;
1213                 }
1214                 nla_nest_end(msg, nl_ftypes);
1215         }
1216
1217         nla_nest_end(msg, nl_ifs);
1218
1219         nl_ifs = nla_nest_start(msg, NL80211_ATTR_RX_FRAME_TYPES);
1220         if (!nl_ifs)
1221                 return -ENOBUFS;
1222
1223         for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1224                 nl_ftypes = nla_nest_start(msg, ift);
1225                 if (!nl_ftypes)
1226                         return -ENOBUFS;
1227                 i = 0;
1228                 stypes = mgmt_stypes[ift].rx;
1229                 while (stypes) {
1230                         if ((stypes & 1) &&
1231                             nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1232                                         (i << 4) | IEEE80211_FTYPE_MGMT))
1233                                 return -ENOBUFS;
1234                         stypes >>= 1;
1235                         i++;
1236                 }
1237                 nla_nest_end(msg, nl_ftypes);
1238         }
1239         nla_nest_end(msg, nl_ifs);
1240
1241         return 0;
1242 }
1243
1244 struct nl80211_dump_wiphy_state {
1245         s64 filter_wiphy;
1246         long start;
1247         long split_start, band_start, chan_start;
1248         bool split;
1249 };
1250
1251 static int nl80211_send_wiphy(struct cfg80211_registered_device *rdev,
1252                               enum nl80211_commands cmd,
1253                               struct sk_buff *msg, u32 portid, u32 seq,
1254                               int flags, struct nl80211_dump_wiphy_state *state)
1255 {
1256         void *hdr;
1257         struct nlattr *nl_bands, *nl_band;
1258         struct nlattr *nl_freqs, *nl_freq;
1259         struct nlattr *nl_cmds;
1260         enum ieee80211_band band;
1261         struct ieee80211_channel *chan;
1262         int i;
1263         const struct ieee80211_txrx_stypes *mgmt_stypes =
1264                                 rdev->wiphy.mgmt_stypes;
1265         u32 features;
1266
1267         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
1268         if (!hdr)
1269                 return -ENOBUFS;
1270
1271         if (WARN_ON(!state))
1272                 return -EINVAL;
1273
1274         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
1275             nla_put_string(msg, NL80211_ATTR_WIPHY_NAME,
1276                            wiphy_name(&rdev->wiphy)) ||
1277             nla_put_u32(msg, NL80211_ATTR_GENERATION,
1278                         cfg80211_rdev_list_generation))
1279                 goto nla_put_failure;
1280
1281         if (cmd != NL80211_CMD_NEW_WIPHY)
1282                 goto finish;
1283
1284         switch (state->split_start) {
1285         case 0:
1286                 if (nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
1287                                rdev->wiphy.retry_short) ||
1288                     nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
1289                                rdev->wiphy.retry_long) ||
1290                     nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
1291                                 rdev->wiphy.frag_threshold) ||
1292                     nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
1293                                 rdev->wiphy.rts_threshold) ||
1294                     nla_put_u8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
1295                                rdev->wiphy.coverage_class) ||
1296                     nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
1297                                rdev->wiphy.max_scan_ssids) ||
1298                     nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS,
1299                                rdev->wiphy.max_sched_scan_ssids) ||
1300                     nla_put_u16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
1301                                 rdev->wiphy.max_scan_ie_len) ||
1302                     nla_put_u16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN,
1303                                 rdev->wiphy.max_sched_scan_ie_len) ||
1304                     nla_put_u8(msg, NL80211_ATTR_MAX_MATCH_SETS,
1305                                rdev->wiphy.max_match_sets))
1306                         goto nla_put_failure;
1307
1308                 if ((rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) &&
1309                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_IBSS_RSN))
1310                         goto nla_put_failure;
1311                 if ((rdev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) &&
1312                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_MESH_AUTH))
1313                         goto nla_put_failure;
1314                 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
1315                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_AP_UAPSD))
1316                         goto nla_put_failure;
1317                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) &&
1318                     nla_put_flag(msg, NL80211_ATTR_ROAM_SUPPORT))
1319                         goto nla_put_failure;
1320                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) &&
1321                     nla_put_flag(msg, NL80211_ATTR_TDLS_SUPPORT))
1322                         goto nla_put_failure;
1323                 if ((rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) &&
1324                     nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP))
1325                         goto nla_put_failure;
1326                 state->split_start++;
1327                 if (state->split)
1328                         break;
1329         case 1:
1330                 if (nla_put(msg, NL80211_ATTR_CIPHER_SUITES,
1331                             sizeof(u32) * rdev->wiphy.n_cipher_suites,
1332                             rdev->wiphy.cipher_suites))
1333                         goto nla_put_failure;
1334
1335                 if (nla_put_u8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
1336                                rdev->wiphy.max_num_pmkids))
1337                         goto nla_put_failure;
1338
1339                 if ((rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
1340                     nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE))
1341                         goto nla_put_failure;
1342
1343                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX,
1344                                 rdev->wiphy.available_antennas_tx) ||
1345                     nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX,
1346                                 rdev->wiphy.available_antennas_rx))
1347                         goto nla_put_failure;
1348
1349                 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) &&
1350                     nla_put_u32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD,
1351                                 rdev->wiphy.probe_resp_offload))
1352                         goto nla_put_failure;
1353
1354                 if ((rdev->wiphy.available_antennas_tx ||
1355                      rdev->wiphy.available_antennas_rx) &&
1356                     rdev->ops->get_antenna) {
1357                         u32 tx_ant = 0, rx_ant = 0;
1358                         int res;
1359                         res = rdev_get_antenna(rdev, &tx_ant, &rx_ant);
1360                         if (!res) {
1361                                 if (nla_put_u32(msg,
1362                                                 NL80211_ATTR_WIPHY_ANTENNA_TX,
1363                                                 tx_ant) ||
1364                                     nla_put_u32(msg,
1365                                                 NL80211_ATTR_WIPHY_ANTENNA_RX,
1366                                                 rx_ant))
1367                                         goto nla_put_failure;
1368                         }
1369                 }
1370
1371                 state->split_start++;
1372                 if (state->split)
1373                         break;
1374         case 2:
1375                 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES,
1376                                         rdev->wiphy.interface_modes))
1377                                 goto nla_put_failure;
1378                 state->split_start++;
1379                 if (state->split)
1380                         break;
1381         case 3:
1382                 nl_bands = nla_nest_start(msg, NL80211_ATTR_WIPHY_BANDS);
1383                 if (!nl_bands)
1384                         goto nla_put_failure;
1385
1386                 for (band = state->band_start;
1387                      band < IEEE80211_NUM_BANDS; band++) {
1388                         struct ieee80211_supported_band *sband;
1389
1390                         sband = rdev->wiphy.bands[band];
1391
1392                         if (!sband)
1393                                 continue;
1394
1395                         nl_band = nla_nest_start(msg, band);
1396                         if (!nl_band)
1397                                 goto nla_put_failure;
1398
1399                         switch (state->chan_start) {
1400                         case 0:
1401                                 if (nl80211_send_band_rateinfo(msg, sband))
1402                                         goto nla_put_failure;
1403                                 state->chan_start++;
1404                                 if (state->split)
1405                                         break;
1406                         default:
1407                                 /* add frequencies */
1408                                 nl_freqs = nla_nest_start(
1409                                         msg, NL80211_BAND_ATTR_FREQS);
1410                                 if (!nl_freqs)
1411                                         goto nla_put_failure;
1412
1413                                 for (i = state->chan_start - 1;
1414                                      i < sband->n_channels;
1415                                      i++) {
1416                                         nl_freq = nla_nest_start(msg, i);
1417                                         if (!nl_freq)
1418                                                 goto nla_put_failure;
1419
1420                                         chan = &sband->channels[i];
1421
1422                                         if (nl80211_msg_put_channel(
1423                                                         msg, chan,
1424                                                         state->split))
1425                                                 goto nla_put_failure;
1426
1427                                         nla_nest_end(msg, nl_freq);
1428                                         if (state->split)
1429                                                 break;
1430                                 }
1431                                 if (i < sband->n_channels)
1432                                         state->chan_start = i + 2;
1433                                 else
1434                                         state->chan_start = 0;
1435                                 nla_nest_end(msg, nl_freqs);
1436                         }
1437
1438                         nla_nest_end(msg, nl_band);
1439
1440                         if (state->split) {
1441                                 /* start again here */
1442                                 if (state->chan_start)
1443                                         band--;
1444                                 break;
1445                         }
1446                 }
1447                 nla_nest_end(msg, nl_bands);
1448
1449                 if (band < IEEE80211_NUM_BANDS)
1450                         state->band_start = band + 1;
1451                 else
1452                         state->band_start = 0;
1453
1454                 /* if bands & channels are done, continue outside */
1455                 if (state->band_start == 0 && state->chan_start == 0)
1456                         state->split_start++;
1457                 if (state->split)
1458                         break;
1459         case 4:
1460                 nl_cmds = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_COMMANDS);
1461                 if (!nl_cmds)
1462                         goto nla_put_failure;
1463
1464                 i = 0;
1465 #define CMD(op, n)                                                      \
1466                  do {                                                   \
1467                         if (rdev->ops->op) {                            \
1468                                 i++;                                    \
1469                                 if (nla_put_u32(msg, i, NL80211_CMD_ ## n)) \
1470                                         goto nla_put_failure;           \
1471                         }                                               \
1472                 } while (0)
1473
1474                 CMD(add_virtual_intf, NEW_INTERFACE);
1475                 CMD(change_virtual_intf, SET_INTERFACE);
1476                 CMD(add_key, NEW_KEY);
1477                 CMD(start_ap, START_AP);
1478                 CMD(add_station, NEW_STATION);
1479                 CMD(add_mpath, NEW_MPATH);
1480                 CMD(update_mesh_config, SET_MESH_CONFIG);
1481                 CMD(change_bss, SET_BSS);
1482                 CMD(auth, AUTHENTICATE);
1483                 CMD(assoc, ASSOCIATE);
1484                 CMD(deauth, DEAUTHENTICATE);
1485                 CMD(disassoc, DISASSOCIATE);
1486                 CMD(join_ibss, JOIN_IBSS);
1487                 CMD(join_mesh, JOIN_MESH);
1488                 CMD(set_pmksa, SET_PMKSA);
1489                 CMD(del_pmksa, DEL_PMKSA);
1490                 CMD(flush_pmksa, FLUSH_PMKSA);
1491                 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)
1492                         CMD(remain_on_channel, REMAIN_ON_CHANNEL);
1493                 CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
1494                 CMD(mgmt_tx, FRAME);
1495                 CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL);
1496                 if (rdev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
1497                         i++;
1498                         if (nla_put_u32(msg, i, NL80211_CMD_SET_WIPHY_NETNS))
1499                                 goto nla_put_failure;
1500                 }
1501                 if (rdev->ops->set_monitor_channel || rdev->ops->start_ap ||
1502                     rdev->ops->join_mesh) {
1503                         i++;
1504                         if (nla_put_u32(msg, i, NL80211_CMD_SET_CHANNEL))
1505                                 goto nla_put_failure;
1506                 }
1507                 CMD(set_wds_peer, SET_WDS_PEER);
1508                 if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) {
1509                         CMD(tdls_mgmt, TDLS_MGMT);
1510                         CMD(tdls_oper, TDLS_OPER);
1511                 }
1512                 if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN)
1513                         CMD(sched_scan_start, START_SCHED_SCAN);
1514                 CMD(probe_client, PROBE_CLIENT);
1515                 CMD(set_noack_map, SET_NOACK_MAP);
1516                 if (rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) {
1517                         i++;
1518                         if (nla_put_u32(msg, i, NL80211_CMD_REGISTER_BEACONS))
1519                                 goto nla_put_failure;
1520                 }
1521                 CMD(start_p2p_device, START_P2P_DEVICE);
1522                 CMD(set_mcast_rate, SET_MCAST_RATE);
1523 #ifdef CONFIG_NL80211_TESTMODE
1524                 CMD(testmode_cmd, TESTMODE);
1525 #endif
1526                 if (state->split) {
1527                         CMD(crit_proto_start, CRIT_PROTOCOL_START);
1528                         CMD(crit_proto_stop, CRIT_PROTOCOL_STOP);
1529                         if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH)
1530                                 CMD(channel_switch, CHANNEL_SWITCH);
1531                         CMD(set_qos_map, SET_QOS_MAP);
1532                         if (rdev->wiphy.features &
1533                                         NL80211_FEATURE_SUPPORTS_WMM_ADMISSION)
1534                                 CMD(add_tx_ts, ADD_TX_TS);
1535                 }
1536                 /* add into the if now */
1537 #undef CMD
1538
1539                 if (rdev->ops->connect || rdev->ops->auth) {
1540                         i++;
1541                         if (nla_put_u32(msg, i, NL80211_CMD_CONNECT))
1542                                 goto nla_put_failure;
1543                 }
1544
1545                 if (rdev->ops->disconnect || rdev->ops->deauth) {
1546                         i++;
1547                         if (nla_put_u32(msg, i, NL80211_CMD_DISCONNECT))
1548                                 goto nla_put_failure;
1549                 }
1550
1551                 nla_nest_end(msg, nl_cmds);
1552                 state->split_start++;
1553                 if (state->split)
1554                         break;
1555         case 5:
1556                 if (rdev->ops->remain_on_channel &&
1557                     (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) &&
1558                     nla_put_u32(msg,
1559                                 NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
1560                                 rdev->wiphy.max_remain_on_channel_duration))
1561                         goto nla_put_failure;
1562
1563                 if ((rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) &&
1564                     nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK))
1565                         goto nla_put_failure;
1566
1567                 if (nl80211_send_mgmt_stypes(msg, mgmt_stypes))
1568                         goto nla_put_failure;
1569                 state->split_start++;
1570                 if (state->split)
1571                         break;
1572         case 6:
1573 #ifdef CONFIG_PM
1574                 if (nl80211_send_wowlan(msg, rdev, state->split))
1575                         goto nla_put_failure;
1576                 state->split_start++;
1577                 if (state->split)
1578                         break;
1579 #else
1580                 state->split_start++;
1581 #endif
1582         case 7:
1583                 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES,
1584                                         rdev->wiphy.software_iftypes))
1585                         goto nla_put_failure;
1586
1587                 if (nl80211_put_iface_combinations(&rdev->wiphy, msg,
1588                                                    state->split))
1589                         goto nla_put_failure;
1590
1591                 state->split_start++;
1592                 if (state->split)
1593                         break;
1594         case 8:
1595                 if ((rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) &&
1596                     nla_put_u32(msg, NL80211_ATTR_DEVICE_AP_SME,
1597                                 rdev->wiphy.ap_sme_capa))
1598                         goto nla_put_failure;
1599
1600                 features = rdev->wiphy.features;
1601                 /*
1602                  * We can only add the per-channel limit information if the
1603                  * dump is split, otherwise it makes it too big. Therefore
1604                  * only advertise it in that case.
1605                  */
1606                 if (state->split)
1607                         features |= NL80211_FEATURE_ADVERTISE_CHAN_LIMITS;
1608                 if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS, features))
1609                         goto nla_put_failure;
1610
1611                 if (rdev->wiphy.ht_capa_mod_mask &&
1612                     nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK,
1613                             sizeof(*rdev->wiphy.ht_capa_mod_mask),
1614                             rdev->wiphy.ht_capa_mod_mask))
1615                         goto nla_put_failure;
1616
1617                 if (rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME &&
1618                     rdev->wiphy.max_acl_mac_addrs &&
1619                     nla_put_u32(msg, NL80211_ATTR_MAC_ACL_MAX,
1620                                 rdev->wiphy.max_acl_mac_addrs))
1621                         goto nla_put_failure;
1622
1623                 /*
1624                  * Any information below this point is only available to
1625                  * applications that can deal with it being split. This
1626                  * helps ensure that newly added capabilities don't break
1627                  * older tools by overrunning their buffers.
1628                  *
1629                  * We still increment split_start so that in the split
1630                  * case we'll continue with more data in the next round,
1631                  * but break unconditionally so unsplit data stops here.
1632                  */
1633                 state->split_start++;
1634                 break;
1635         case 9:
1636                 if (rdev->wiphy.extended_capabilities &&
1637                     (nla_put(msg, NL80211_ATTR_EXT_CAPA,
1638                              rdev->wiphy.extended_capabilities_len,
1639                              rdev->wiphy.extended_capabilities) ||
1640                      nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
1641                              rdev->wiphy.extended_capabilities_len,
1642                              rdev->wiphy.extended_capabilities_mask)))
1643                         goto nla_put_failure;
1644
1645                 if (rdev->wiphy.vht_capa_mod_mask &&
1646                     nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK,
1647                             sizeof(*rdev->wiphy.vht_capa_mod_mask),
1648                             rdev->wiphy.vht_capa_mod_mask))
1649                         goto nla_put_failure;
1650
1651                 state->split_start++;
1652                 break;
1653         case 10:
1654                 if (nl80211_send_coalesce(msg, rdev))
1655                         goto nla_put_failure;
1656
1657                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ) &&
1658                     (nla_put_flag(msg, NL80211_ATTR_SUPPORT_5_MHZ) ||
1659                      nla_put_flag(msg, NL80211_ATTR_SUPPORT_10_MHZ)))
1660                         goto nla_put_failure;
1661
1662                 if (rdev->wiphy.max_ap_assoc_sta &&
1663                     nla_put_u32(msg, NL80211_ATTR_MAX_AP_ASSOC_STA,
1664                                 rdev->wiphy.max_ap_assoc_sta))
1665                         goto nla_put_failure;
1666
1667                 state->split_start++;
1668                 break;
1669         case 11:
1670                 if (rdev->wiphy.n_vendor_commands) {
1671                         const struct nl80211_vendor_cmd_info *info;
1672                         struct nlattr *nested;
1673
1674                         nested = nla_nest_start(msg, NL80211_ATTR_VENDOR_DATA);
1675                         if (!nested)
1676                                 goto nla_put_failure;
1677
1678                         for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
1679                                 info = &rdev->wiphy.vendor_commands[i].info;
1680                                 if (nla_put(msg, i + 1, sizeof(*info), info))
1681                                         goto nla_put_failure;
1682                         }
1683                         nla_nest_end(msg, nested);
1684                 }
1685
1686                 if (rdev->wiphy.n_vendor_events) {
1687                         const struct nl80211_vendor_cmd_info *info;
1688                         struct nlattr *nested;
1689
1690                         nested = nla_nest_start(msg,
1691                                                 NL80211_ATTR_VENDOR_EVENTS);
1692                         if (!nested)
1693                                 goto nla_put_failure;
1694
1695                         for (i = 0; i < rdev->wiphy.n_vendor_events; i++) {
1696                                 info = &rdev->wiphy.vendor_events[i];
1697                                 if (nla_put(msg, i + 1, sizeof(*info), info))
1698                                         goto nla_put_failure;
1699                         }
1700                         nla_nest_end(msg, nested);
1701                 }
1702                 state->split_start++;
1703                 break;
1704         case 12:
1705                 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH &&
1706                     nla_put_u8(msg, NL80211_ATTR_MAX_CSA_COUNTERS,
1707                                rdev->wiphy.max_num_csa_counters))
1708                         goto nla_put_failure;
1709
1710                 if (rdev->wiphy.regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
1711                     nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
1712                         goto nla_put_failure;
1713
1714                 if (nla_put(msg, NL80211_ATTR_EXT_FEATURES,
1715                             sizeof(rdev->wiphy.ext_features),
1716                             rdev->wiphy.ext_features))
1717                         goto nla_put_failure;
1718
1719                 /* done */
1720                 state->split_start = 0;
1721                 break;
1722         }
1723  finish:
1724         return genlmsg_end(msg, hdr);
1725
1726  nla_put_failure:
1727         genlmsg_cancel(msg, hdr);
1728         return -EMSGSIZE;
1729 }
1730
1731 static int nl80211_dump_wiphy_parse(struct sk_buff *skb,
1732                                     struct netlink_callback *cb,
1733                                     struct nl80211_dump_wiphy_state *state)
1734 {
1735         struct nlattr **tb = nl80211_fam.attrbuf;
1736         int ret = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
1737                               tb, nl80211_fam.maxattr, nl80211_policy);
1738         /* ignore parse errors for backward compatibility */
1739         if (ret)
1740                 return 0;
1741
1742         state->split = tb[NL80211_ATTR_SPLIT_WIPHY_DUMP];
1743         if (tb[NL80211_ATTR_WIPHY])
1744                 state->filter_wiphy = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
1745         if (tb[NL80211_ATTR_WDEV])
1746                 state->filter_wiphy = nla_get_u64(tb[NL80211_ATTR_WDEV]) >> 32;
1747         if (tb[NL80211_ATTR_IFINDEX]) {
1748                 struct net_device *netdev;
1749                 struct cfg80211_registered_device *rdev;
1750                 int ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
1751
1752                 netdev = __dev_get_by_index(sock_net(skb->sk), ifidx);
1753                 if (!netdev)
1754                         return -ENODEV;
1755                 if (netdev->ieee80211_ptr) {
1756                         rdev = wiphy_to_rdev(
1757                                 netdev->ieee80211_ptr->wiphy);
1758                         state->filter_wiphy = rdev->wiphy_idx;
1759                 }
1760         }
1761
1762         return 0;
1763 }
1764
1765 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
1766 {
1767         int idx = 0, ret;
1768         struct nl80211_dump_wiphy_state *state = (void *)cb->args[0];
1769         struct cfg80211_registered_device *rdev;
1770
1771         rtnl_lock();
1772         if (!state) {
1773                 state = kzalloc(sizeof(*state), GFP_KERNEL);
1774                 if (!state) {
1775                         rtnl_unlock();
1776                         return -ENOMEM;
1777                 }
1778                 state->filter_wiphy = -1;
1779                 ret = nl80211_dump_wiphy_parse(skb, cb, state);
1780                 if (ret) {
1781                         kfree(state);
1782                         rtnl_unlock();
1783                         return ret;
1784                 }
1785                 cb->args[0] = (long)state;
1786         }
1787
1788         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
1789                 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
1790                         continue;
1791                 if (++idx <= state->start)
1792                         continue;
1793                 if (state->filter_wiphy != -1 &&
1794                     state->filter_wiphy != rdev->wiphy_idx)
1795                         continue;
1796                 /* attempt to fit multiple wiphy data chunks into the skb */
1797                 do {
1798                         ret = nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY,
1799                                                  skb,
1800                                                  NETLINK_CB(cb->skb).portid,
1801                                                  cb->nlh->nlmsg_seq,
1802                                                  NLM_F_MULTI, state);
1803                         if (ret < 0) {
1804                                 /*
1805                                  * If sending the wiphy data didn't fit (ENOBUFS
1806                                  * or EMSGSIZE returned), this SKB is still
1807                                  * empty (so it's not too big because another
1808                                  * wiphy dataset is already in the skb) and
1809                                  * we've not tried to adjust the dump allocation
1810                                  * yet ... then adjust the alloc size to be
1811                                  * bigger, and return 1 but with the empty skb.
1812                                  * This results in an empty message being RX'ed
1813                                  * in userspace, but that is ignored.
1814                                  *
1815                                  * We can then retry with the larger buffer.
1816                                  */
1817                                 if ((ret == -ENOBUFS || ret == -EMSGSIZE) &&
1818                                     !skb->len && !state->split &&
1819                                     cb->min_dump_alloc < 4096) {
1820                                         cb->min_dump_alloc = 4096;
1821                                         state->split_start = 0;
1822                                         rtnl_unlock();
1823                                         return 1;
1824                                 }
1825                                 idx--;
1826                                 break;
1827                         }
1828                 } while (state->split_start > 0);
1829                 break;
1830         }
1831         rtnl_unlock();
1832
1833         state->start = idx;
1834
1835         return skb->len;
1836 }
1837
1838 static int nl80211_dump_wiphy_done(struct netlink_callback *cb)
1839 {
1840         kfree((void *)cb->args[0]);
1841         return 0;
1842 }
1843
1844 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
1845 {
1846         struct sk_buff *msg;
1847         struct cfg80211_registered_device *rdev = info->user_ptr[0];
1848         struct nl80211_dump_wiphy_state state = {};
1849
1850         msg = nlmsg_new(4096, GFP_KERNEL);
1851         if (!msg)
1852                 return -ENOMEM;
1853
1854         if (nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY, msg,
1855                                info->snd_portid, info->snd_seq, 0,
1856                                &state) < 0) {
1857                 nlmsg_free(msg);
1858                 return -ENOBUFS;
1859         }
1860
1861         return genlmsg_reply(msg, info);
1862 }
1863
1864 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
1865         [NL80211_TXQ_ATTR_QUEUE]                = { .type = NLA_U8 },
1866         [NL80211_TXQ_ATTR_TXOP]                 = { .type = NLA_U16 },
1867         [NL80211_TXQ_ATTR_CWMIN]                = { .type = NLA_U16 },
1868         [NL80211_TXQ_ATTR_CWMAX]                = { .type = NLA_U16 },
1869         [NL80211_TXQ_ATTR_AIFS]                 = { .type = NLA_U8 },
1870 };
1871
1872 static int parse_txq_params(struct nlattr *tb[],
1873                             struct ieee80211_txq_params *txq_params)
1874 {
1875         if (!tb[NL80211_TXQ_ATTR_AC] || !tb[NL80211_TXQ_ATTR_TXOP] ||
1876             !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
1877             !tb[NL80211_TXQ_ATTR_AIFS])
1878                 return -EINVAL;
1879
1880         txq_params->ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]);
1881         txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
1882         txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
1883         txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
1884         txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
1885
1886         if (txq_params->ac >= NL80211_NUM_ACS)
1887                 return -EINVAL;
1888
1889         return 0;
1890 }
1891
1892 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
1893 {
1894         /*
1895          * You can only set the channel explicitly for WDS interfaces,
1896          * all others have their channel managed via their respective
1897          * "establish a connection" command (connect, join, ...)
1898          *
1899          * For AP/GO and mesh mode, the channel can be set with the
1900          * channel userspace API, but is only stored and passed to the
1901          * low-level driver when the AP starts or the mesh is joined.
1902          * This is for backward compatibility, userspace can also give
1903          * the channel in the start-ap or join-mesh commands instead.
1904          *
1905          * Monitors are special as they are normally slaved to
1906          * whatever else is going on, so they have their own special
1907          * operation to set the monitor channel if possible.
1908          */
1909         return !wdev ||
1910                 wdev->iftype == NL80211_IFTYPE_AP ||
1911                 wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
1912                 wdev->iftype == NL80211_IFTYPE_MONITOR ||
1913                 wdev->iftype == NL80211_IFTYPE_P2P_GO;
1914 }
1915
1916 static int nl80211_parse_chandef(struct cfg80211_registered_device *rdev,
1917                                  struct genl_info *info,
1918                                  struct cfg80211_chan_def *chandef)
1919 {
1920         u32 control_freq;
1921
1922         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
1923                 return -EINVAL;
1924
1925         control_freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
1926
1927         chandef->chan = ieee80211_get_channel(&rdev->wiphy, control_freq);
1928         chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
1929         chandef->center_freq1 = control_freq;
1930         chandef->center_freq2 = 0;
1931
1932         /* Primary channel not allowed */
1933         if (!chandef->chan || chandef->chan->flags & IEEE80211_CHAN_DISABLED)
1934                 return -EINVAL;
1935
1936         if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
1937                 enum nl80211_channel_type chantype;
1938
1939                 chantype = nla_get_u32(
1940                                 info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
1941
1942                 switch (chantype) {
1943                 case NL80211_CHAN_NO_HT:
1944                 case NL80211_CHAN_HT20:
1945                 case NL80211_CHAN_HT40PLUS:
1946                 case NL80211_CHAN_HT40MINUS:
1947                         cfg80211_chandef_create(chandef, chandef->chan,
1948                                                 chantype);
1949                         break;
1950                 default:
1951                         return -EINVAL;
1952                 }
1953         } else if (info->attrs[NL80211_ATTR_CHANNEL_WIDTH]) {
1954                 chandef->width =
1955                         nla_get_u32(info->attrs[NL80211_ATTR_CHANNEL_WIDTH]);
1956                 if (info->attrs[NL80211_ATTR_CENTER_FREQ1])
1957                         chandef->center_freq1 =
1958                                 nla_get_u32(
1959                                         info->attrs[NL80211_ATTR_CENTER_FREQ1]);
1960                 if (info->attrs[NL80211_ATTR_CENTER_FREQ2])
1961                         chandef->center_freq2 =
1962                                 nla_get_u32(
1963                                         info->attrs[NL80211_ATTR_CENTER_FREQ2]);
1964         }
1965
1966         if (!cfg80211_chandef_valid(chandef))
1967                 return -EINVAL;
1968
1969         if (!cfg80211_chandef_usable(&rdev->wiphy, chandef,
1970                                      IEEE80211_CHAN_DISABLED))
1971                 return -EINVAL;
1972
1973         if ((chandef->width == NL80211_CHAN_WIDTH_5 ||
1974              chandef->width == NL80211_CHAN_WIDTH_10) &&
1975             !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ))
1976                 return -EINVAL;
1977
1978         return 0;
1979 }
1980
1981 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
1982                                  struct net_device *dev,
1983                                  struct genl_info *info)
1984 {
1985         struct cfg80211_chan_def chandef;
1986         int result;
1987         enum nl80211_iftype iftype = NL80211_IFTYPE_MONITOR;
1988         struct wireless_dev *wdev = NULL;
1989
1990         if (dev)
1991                 wdev = dev->ieee80211_ptr;
1992         if (!nl80211_can_set_dev_channel(wdev))
1993                 return -EOPNOTSUPP;
1994         if (wdev)
1995                 iftype = wdev->iftype;
1996
1997         result = nl80211_parse_chandef(rdev, info, &chandef);
1998         if (result)
1999                 return result;
2000
2001         switch (iftype) {
2002         case NL80211_IFTYPE_AP:
2003         case NL80211_IFTYPE_P2P_GO:
2004                 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &chandef, iftype)) {
2005                         result = -EINVAL;
2006                         break;
2007                 }
2008                 if (wdev->beacon_interval) {
2009                         if (!dev || !rdev->ops->set_ap_chanwidth ||
2010                             !(rdev->wiphy.features &
2011                               NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE)) {
2012                                 result = -EBUSY;
2013                                 break;
2014                         }
2015
2016                         /* Only allow dynamic channel width changes */
2017                         if (chandef.chan != wdev->preset_chandef.chan) {
2018                                 result = -EBUSY;
2019                                 break;
2020                         }
2021                         result = rdev_set_ap_chanwidth(rdev, dev, &chandef);
2022                         if (result)
2023                                 break;
2024                 }
2025                 wdev->preset_chandef = chandef;
2026                 result = 0;
2027                 break;
2028         case NL80211_IFTYPE_MESH_POINT:
2029                 result = cfg80211_set_mesh_channel(rdev, wdev, &chandef);
2030                 break;
2031         case NL80211_IFTYPE_MONITOR:
2032                 result = cfg80211_set_monitor_channel(rdev, &chandef);
2033                 break;
2034         default:
2035                 result = -EINVAL;
2036         }
2037
2038         return result;
2039 }
2040
2041 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
2042 {
2043         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2044         struct net_device *netdev = info->user_ptr[1];
2045
2046         return __nl80211_set_channel(rdev, netdev, info);
2047 }
2048
2049 static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info)
2050 {
2051         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2052         struct net_device *dev = info->user_ptr[1];
2053         struct wireless_dev *wdev = dev->ieee80211_ptr;
2054         const u8 *bssid;
2055
2056         if (!info->attrs[NL80211_ATTR_MAC])
2057                 return -EINVAL;
2058
2059         if (netif_running(dev))
2060                 return -EBUSY;
2061
2062         if (!rdev->ops->set_wds_peer)
2063                 return -EOPNOTSUPP;
2064
2065         if (wdev->iftype != NL80211_IFTYPE_WDS)
2066                 return -EOPNOTSUPP;
2067
2068         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
2069         return rdev_set_wds_peer(rdev, dev, bssid);
2070 }
2071
2072
2073 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
2074 {
2075         struct cfg80211_registered_device *rdev;
2076         struct net_device *netdev = NULL;
2077         struct wireless_dev *wdev;
2078         int result = 0, rem_txq_params = 0;
2079         struct nlattr *nl_txq_params;
2080         u32 changed;
2081         u8 retry_short = 0, retry_long = 0;
2082         u32 frag_threshold = 0, rts_threshold = 0;
2083         u8 coverage_class = 0;
2084
2085         ASSERT_RTNL();
2086
2087         /*
2088          * Try to find the wiphy and netdev. Normally this
2089          * function shouldn't need the netdev, but this is
2090          * done for backward compatibility -- previously
2091          * setting the channel was done per wiphy, but now
2092          * it is per netdev. Previous userland like hostapd
2093          * also passed a netdev to set_wiphy, so that it is
2094          * possible to let that go to the right netdev!
2095          */
2096
2097         if (info->attrs[NL80211_ATTR_IFINDEX]) {
2098                 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
2099
2100                 netdev = __dev_get_by_index(genl_info_net(info), ifindex);
2101                 if (netdev && netdev->ieee80211_ptr)
2102                         rdev = wiphy_to_rdev(netdev->ieee80211_ptr->wiphy);
2103                 else
2104                         netdev = NULL;
2105         }
2106
2107         if (!netdev) {
2108                 rdev = __cfg80211_rdev_from_attrs(genl_info_net(info),
2109                                                   info->attrs);
2110                 if (IS_ERR(rdev))
2111                         return PTR_ERR(rdev);
2112                 wdev = NULL;
2113                 netdev = NULL;
2114                 result = 0;
2115         } else
2116                 wdev = netdev->ieee80211_ptr;
2117
2118         /*
2119          * end workaround code, by now the rdev is available
2120          * and locked, and wdev may or may not be NULL.
2121          */
2122
2123         if (info->attrs[NL80211_ATTR_WIPHY_NAME])
2124                 result = cfg80211_dev_rename(
2125                         rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
2126
2127         if (result)
2128                 return result;
2129
2130         if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
2131                 struct ieee80211_txq_params txq_params;
2132                 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
2133
2134                 if (!rdev->ops->set_txq_params)
2135                         return -EOPNOTSUPP;
2136
2137                 if (!netdev)
2138                         return -EINVAL;
2139
2140                 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2141                     netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2142                         return -EINVAL;
2143
2144                 if (!netif_running(netdev))
2145                         return -ENETDOWN;
2146
2147                 nla_for_each_nested(nl_txq_params,
2148                                     info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
2149                                     rem_txq_params) {
2150                         result = nla_parse(tb, NL80211_TXQ_ATTR_MAX,
2151                                            nla_data(nl_txq_params),
2152                                            nla_len(nl_txq_params),
2153                                            txq_params_policy);
2154                         if (result)
2155                                 return result;
2156                         result = parse_txq_params(tb, &txq_params);
2157                         if (result)
2158                                 return result;
2159
2160                         result = rdev_set_txq_params(rdev, netdev,
2161                                                      &txq_params);
2162                         if (result)
2163                                 return result;
2164                 }
2165         }
2166
2167         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
2168                 result = __nl80211_set_channel(
2169                         rdev,
2170                         nl80211_can_set_dev_channel(wdev) ? netdev : NULL,
2171                         info);
2172                 if (result)
2173                         return result;
2174         }
2175
2176         if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
2177                 struct wireless_dev *txp_wdev = wdev;
2178                 enum nl80211_tx_power_setting type;
2179                 int idx, mbm = 0;
2180
2181                 if (!(rdev->wiphy.features & NL80211_FEATURE_VIF_TXPOWER))
2182                         txp_wdev = NULL;
2183
2184                 if (!rdev->ops->set_tx_power)
2185                         return -EOPNOTSUPP;
2186
2187                 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
2188                 type = nla_get_u32(info->attrs[idx]);
2189
2190                 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
2191                     (type != NL80211_TX_POWER_AUTOMATIC))
2192                         return -EINVAL;
2193
2194                 if (type != NL80211_TX_POWER_AUTOMATIC) {
2195                         idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
2196                         mbm = nla_get_u32(info->attrs[idx]);
2197                 }
2198
2199                 result = rdev_set_tx_power(rdev, txp_wdev, type, mbm);
2200                 if (result)
2201                         return result;
2202         }
2203
2204         if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
2205             info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
2206                 u32 tx_ant, rx_ant;
2207                 if ((!rdev->wiphy.available_antennas_tx &&
2208                      !rdev->wiphy.available_antennas_rx) ||
2209                     !rdev->ops->set_antenna)
2210                         return -EOPNOTSUPP;
2211
2212                 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
2213                 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
2214
2215                 /* reject antenna configurations which don't match the
2216                  * available antenna masks, except for the "all" mask */
2217                 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) ||
2218                     (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx)))
2219                         return -EINVAL;
2220
2221                 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx;
2222                 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx;
2223
2224                 result = rdev_set_antenna(rdev, tx_ant, rx_ant);
2225                 if (result)
2226                         return result;
2227         }
2228
2229         changed = 0;
2230
2231         if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
2232                 retry_short = nla_get_u8(
2233                         info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
2234                 if (retry_short == 0)
2235                         return -EINVAL;
2236
2237                 changed |= WIPHY_PARAM_RETRY_SHORT;
2238         }
2239
2240         if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
2241                 retry_long = nla_get_u8(
2242                         info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
2243                 if (retry_long == 0)
2244                         return -EINVAL;
2245
2246                 changed |= WIPHY_PARAM_RETRY_LONG;
2247         }
2248
2249         if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
2250                 frag_threshold = nla_get_u32(
2251                         info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
2252                 if (frag_threshold < 256)
2253                         return -EINVAL;
2254
2255                 if (frag_threshold != (u32) -1) {
2256                         /*
2257                          * Fragments (apart from the last one) are required to
2258                          * have even length. Make the fragmentation code
2259                          * simpler by stripping LSB should someone try to use
2260                          * odd threshold value.
2261                          */
2262                         frag_threshold &= ~0x1;
2263                 }
2264                 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
2265         }
2266
2267         if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
2268                 rts_threshold = nla_get_u32(
2269                         info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
2270                 changed |= WIPHY_PARAM_RTS_THRESHOLD;
2271         }
2272
2273         if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
2274                 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK])
2275                         return -EINVAL;
2276
2277                 coverage_class = nla_get_u8(
2278                         info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
2279                 changed |= WIPHY_PARAM_COVERAGE_CLASS;
2280         }
2281
2282         if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK]) {
2283                 if (!(rdev->wiphy.features & NL80211_FEATURE_ACKTO_ESTIMATION))
2284                         return -EOPNOTSUPP;
2285
2286                 changed |= WIPHY_PARAM_DYN_ACK;
2287         }
2288
2289         if (changed) {
2290                 u8 old_retry_short, old_retry_long;
2291                 u32 old_frag_threshold, old_rts_threshold;
2292                 u8 old_coverage_class;
2293
2294                 if (!rdev->ops->set_wiphy_params)
2295                         return -EOPNOTSUPP;
2296
2297                 old_retry_short = rdev->wiphy.retry_short;
2298                 old_retry_long = rdev->wiphy.retry_long;
2299                 old_frag_threshold = rdev->wiphy.frag_threshold;
2300                 old_rts_threshold = rdev->wiphy.rts_threshold;
2301                 old_coverage_class = rdev->wiphy.coverage_class;
2302
2303                 if (changed & WIPHY_PARAM_RETRY_SHORT)
2304                         rdev->wiphy.retry_short = retry_short;
2305                 if (changed & WIPHY_PARAM_RETRY_LONG)
2306                         rdev->wiphy.retry_long = retry_long;
2307                 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
2308                         rdev->wiphy.frag_threshold = frag_threshold;
2309                 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
2310                         rdev->wiphy.rts_threshold = rts_threshold;
2311                 if (changed & WIPHY_PARAM_COVERAGE_CLASS)
2312                         rdev->wiphy.coverage_class = coverage_class;
2313
2314                 result = rdev_set_wiphy_params(rdev, changed);
2315                 if (result) {
2316                         rdev->wiphy.retry_short = old_retry_short;
2317                         rdev->wiphy.retry_long = old_retry_long;
2318                         rdev->wiphy.frag_threshold = old_frag_threshold;
2319                         rdev->wiphy.rts_threshold = old_rts_threshold;
2320                         rdev->wiphy.coverage_class = old_coverage_class;
2321                 }
2322         }
2323         return 0;
2324 }
2325
2326 static inline u64 wdev_id(struct wireless_dev *wdev)
2327 {
2328         return (u64)wdev->identifier |
2329                ((u64)wiphy_to_rdev(wdev->wiphy)->wiphy_idx << 32);
2330 }
2331
2332 static int nl80211_send_chandef(struct sk_buff *msg,
2333                                 const struct cfg80211_chan_def *chandef)
2334 {
2335         if (WARN_ON(!cfg80211_chandef_valid(chandef)))
2336                 return -EINVAL;
2337
2338         if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
2339                         chandef->chan->center_freq))
2340                 return -ENOBUFS;
2341         switch (chandef->width) {
2342         case NL80211_CHAN_WIDTH_20_NOHT:
2343         case NL80211_CHAN_WIDTH_20:
2344         case NL80211_CHAN_WIDTH_40:
2345                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
2346                                 cfg80211_get_chandef_type(chandef)))
2347                         return -ENOBUFS;
2348                 break;
2349         default:
2350                 break;
2351         }
2352         if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, chandef->width))
2353                 return -ENOBUFS;
2354         if (nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1, chandef->center_freq1))
2355                 return -ENOBUFS;
2356         if (chandef->center_freq2 &&
2357             nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2, chandef->center_freq2))
2358                 return -ENOBUFS;
2359         return 0;
2360 }
2361
2362 static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags,
2363                               struct cfg80211_registered_device *rdev,
2364                               struct wireless_dev *wdev, bool removal)
2365 {
2366         struct net_device *dev = wdev->netdev;
2367         u8 cmd = NL80211_CMD_NEW_INTERFACE;
2368         void *hdr;
2369
2370         if (removal)
2371                 cmd = NL80211_CMD_DEL_INTERFACE;
2372
2373         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
2374         if (!hdr)
2375                 return -1;
2376
2377         if (dev &&
2378             (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
2379              nla_put_string(msg, NL80211_ATTR_IFNAME, dev->name)))
2380                 goto nla_put_failure;
2381
2382         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
2383             nla_put_u32(msg, NL80211_ATTR_IFTYPE, wdev->iftype) ||
2384             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
2385             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, wdev_address(wdev)) ||
2386             nla_put_u32(msg, NL80211_ATTR_GENERATION,
2387                         rdev->devlist_generation ^
2388                         (cfg80211_rdev_list_generation << 2)))
2389                 goto nla_put_failure;
2390
2391         if (rdev->ops->get_channel) {
2392                 int ret;
2393                 struct cfg80211_chan_def chandef;
2394
2395                 ret = rdev_get_channel(rdev, wdev, &chandef);
2396                 if (ret == 0) {
2397                         if (nl80211_send_chandef(msg, &chandef))
2398                                 goto nla_put_failure;
2399                 }
2400         }
2401
2402         if (wdev->ssid_len) {
2403                 if (nla_put(msg, NL80211_ATTR_SSID, wdev->ssid_len, wdev->ssid))
2404                         goto nla_put_failure;
2405         }
2406
2407         return genlmsg_end(msg, hdr);
2408
2409  nla_put_failure:
2410         genlmsg_cancel(msg, hdr);
2411         return -EMSGSIZE;
2412 }
2413
2414 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
2415 {
2416         int wp_idx = 0;
2417         int if_idx = 0;
2418         int wp_start = cb->args[0];
2419         int if_start = cb->args[1];
2420         struct cfg80211_registered_device *rdev;
2421         struct wireless_dev *wdev;
2422
2423         rtnl_lock();
2424         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
2425                 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
2426                         continue;
2427                 if (wp_idx < wp_start) {
2428                         wp_idx++;
2429                         continue;
2430                 }
2431                 if_idx = 0;
2432
2433                 list_for_each_entry(wdev, &rdev->wdev_list, list) {
2434                         if (if_idx < if_start) {
2435                                 if_idx++;
2436                                 continue;
2437                         }
2438                         if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).portid,
2439                                                cb->nlh->nlmsg_seq, NLM_F_MULTI,
2440                                                rdev, wdev, false) < 0) {
2441                                 goto out;
2442                         }
2443                         if_idx++;
2444                 }
2445
2446                 wp_idx++;
2447         }
2448  out:
2449         rtnl_unlock();
2450
2451         cb->args[0] = wp_idx;
2452         cb->args[1] = if_idx;
2453
2454         return skb->len;
2455 }
2456
2457 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
2458 {
2459         struct sk_buff *msg;
2460         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2461         struct wireless_dev *wdev = info->user_ptr[1];
2462
2463         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2464         if (!msg)
2465                 return -ENOMEM;
2466
2467         if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
2468                                rdev, wdev, false) < 0) {
2469                 nlmsg_free(msg);
2470                 return -ENOBUFS;
2471         }
2472
2473         return genlmsg_reply(msg, info);
2474 }
2475
2476 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
2477         [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
2478         [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
2479         [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
2480         [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
2481         [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
2482         [NL80211_MNTR_FLAG_ACTIVE] = { .type = NLA_FLAG },
2483 };
2484
2485 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
2486 {
2487         struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
2488         int flag;
2489
2490         *mntrflags = 0;
2491
2492         if (!nla)
2493                 return -EINVAL;
2494
2495         if (nla_parse_nested(flags, NL80211_MNTR_FLAG_MAX,
2496                              nla, mntr_flags_policy))
2497                 return -EINVAL;
2498
2499         for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
2500                 if (flags[flag])
2501                         *mntrflags |= (1<<flag);
2502
2503         return 0;
2504 }
2505
2506 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
2507                                struct net_device *netdev, u8 use_4addr,
2508                                enum nl80211_iftype iftype)
2509 {
2510         if (!use_4addr) {
2511                 if (netdev && (netdev->priv_flags & IFF_BRIDGE_PORT))
2512                         return -EBUSY;
2513                 return 0;
2514         }
2515
2516         switch (iftype) {
2517         case NL80211_IFTYPE_AP_VLAN:
2518                 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
2519                         return 0;
2520                 break;
2521         case NL80211_IFTYPE_STATION:
2522                 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
2523                         return 0;
2524                 break;
2525         default:
2526                 break;
2527         }
2528
2529         return -EOPNOTSUPP;
2530 }
2531
2532 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
2533 {
2534         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2535         struct vif_params params;
2536         int err;
2537         enum nl80211_iftype otype, ntype;
2538         struct net_device *dev = info->user_ptr[1];
2539         u32 _flags, *flags = NULL;
2540         bool change = false;
2541
2542         memset(&params, 0, sizeof(params));
2543
2544         otype = ntype = dev->ieee80211_ptr->iftype;
2545
2546         if (info->attrs[NL80211_ATTR_IFTYPE]) {
2547                 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
2548                 if (otype != ntype)
2549                         change = true;
2550                 if (ntype > NL80211_IFTYPE_MAX)
2551                         return -EINVAL;
2552         }
2553
2554         if (info->attrs[NL80211_ATTR_MESH_ID]) {
2555                 struct wireless_dev *wdev = dev->ieee80211_ptr;
2556
2557                 if (ntype != NL80211_IFTYPE_MESH_POINT)
2558                         return -EINVAL;
2559                 if (netif_running(dev))
2560                         return -EBUSY;
2561
2562                 wdev_lock(wdev);
2563                 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
2564                              IEEE80211_MAX_MESH_ID_LEN);
2565                 wdev->mesh_id_up_len =
2566                         nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
2567                 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
2568                        wdev->mesh_id_up_len);
2569                 wdev_unlock(wdev);
2570         }
2571
2572         if (info->attrs[NL80211_ATTR_4ADDR]) {
2573                 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
2574                 change = true;
2575                 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
2576                 if (err)
2577                         return err;
2578         } else {
2579                 params.use_4addr = -1;
2580         }
2581
2582         if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
2583                 if (ntype != NL80211_IFTYPE_MONITOR)
2584                         return -EINVAL;
2585                 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
2586                                           &_flags);
2587                 if (err)
2588                         return err;
2589
2590                 flags = &_flags;
2591                 change = true;
2592         }
2593
2594         if (flags && (*flags & MONITOR_FLAG_ACTIVE) &&
2595             !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
2596                 return -EOPNOTSUPP;
2597
2598         if (change)
2599                 err = cfg80211_change_iface(rdev, dev, ntype, flags, &params);
2600         else
2601                 err = 0;
2602
2603         if (!err && params.use_4addr != -1)
2604                 dev->ieee80211_ptr->use_4addr = params.use_4addr;
2605
2606         return err;
2607 }
2608
2609 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
2610 {
2611         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2612         struct vif_params params;
2613         struct wireless_dev *wdev;
2614         struct sk_buff *msg, *event;
2615         int err;
2616         enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
2617         u32 flags;
2618
2619         /* to avoid failing a new interface creation due to pending removal */
2620         cfg80211_destroy_ifaces(rdev);
2621
2622         memset(&params, 0, sizeof(params));
2623
2624         if (!info->attrs[NL80211_ATTR_IFNAME])
2625                 return -EINVAL;
2626
2627         if (info->attrs[NL80211_ATTR_IFTYPE]) {
2628                 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
2629                 if (type > NL80211_IFTYPE_MAX)
2630                         return -EINVAL;
2631         }
2632
2633         if (!rdev->ops->add_virtual_intf ||
2634             !(rdev->wiphy.interface_modes & (1 << type)))
2635                 return -EOPNOTSUPP;
2636
2637         if ((type == NL80211_IFTYPE_P2P_DEVICE ||
2638              rdev->wiphy.features & NL80211_FEATURE_MAC_ON_CREATE) &&
2639             info->attrs[NL80211_ATTR_MAC]) {
2640                 nla_memcpy(params.macaddr, info->attrs[NL80211_ATTR_MAC],
2641                            ETH_ALEN);
2642                 if (!is_valid_ether_addr(params.macaddr))
2643                         return -EADDRNOTAVAIL;
2644         }
2645
2646         if (info->attrs[NL80211_ATTR_4ADDR]) {
2647                 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
2648                 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
2649                 if (err)
2650                         return err;
2651         }
2652
2653         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2654         if (!msg)
2655                 return -ENOMEM;
2656
2657         err = parse_monitor_flags(type == NL80211_IFTYPE_MONITOR ?
2658                                   info->attrs[NL80211_ATTR_MNTR_FLAGS] : NULL,
2659                                   &flags);
2660
2661         if (!err && (flags & MONITOR_FLAG_ACTIVE) &&
2662             !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
2663                 return -EOPNOTSUPP;
2664
2665         wdev = rdev_add_virtual_intf(rdev,
2666                                 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
2667                                 type, err ? NULL : &flags, &params);
2668         if (WARN_ON(!wdev)) {
2669                 nlmsg_free(msg);
2670                 return -EPROTO;
2671         } else if (IS_ERR(wdev)) {
2672                 nlmsg_free(msg);
2673                 return PTR_ERR(wdev);
2674         }
2675
2676         if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
2677                 wdev->owner_nlportid = info->snd_portid;
2678
2679         switch (type) {
2680         case NL80211_IFTYPE_MESH_POINT:
2681                 if (!info->attrs[NL80211_ATTR_MESH_ID])
2682                         break;
2683                 wdev_lock(wdev);
2684                 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
2685                              IEEE80211_MAX_MESH_ID_LEN);
2686                 wdev->mesh_id_up_len =
2687                         nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
2688                 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
2689                        wdev->mesh_id_up_len);
2690                 wdev_unlock(wdev);
2691                 break;
2692         case NL80211_IFTYPE_P2P_DEVICE:
2693                 /*
2694                  * P2P Device doesn't have a netdev, so doesn't go
2695                  * through the netdev notifier and must be added here
2696                  */
2697                 mutex_init(&wdev->mtx);
2698                 INIT_LIST_HEAD(&wdev->event_list);
2699                 spin_lock_init(&wdev->event_lock);
2700                 INIT_LIST_HEAD(&wdev->mgmt_registrations);
2701                 spin_lock_init(&wdev->mgmt_registrations_lock);
2702
2703                 wdev->identifier = ++rdev->wdev_id;
2704                 list_add_rcu(&wdev->list, &rdev->wdev_list);
2705                 rdev->devlist_generation++;
2706                 break;
2707         default:
2708                 break;
2709         }
2710
2711         if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
2712                                rdev, wdev, false) < 0) {
2713                 nlmsg_free(msg);
2714                 return -ENOBUFS;
2715         }
2716
2717         event = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2718         if (event) {
2719                 if (nl80211_send_iface(event, 0, 0, 0,
2720                                        rdev, wdev, false) < 0) {
2721                         nlmsg_free(event);
2722                         goto out;
2723                 }
2724
2725                 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
2726                                         event, 0, NL80211_MCGRP_CONFIG,
2727                                         GFP_KERNEL);
2728         }
2729
2730 out:
2731         return genlmsg_reply(msg, info);
2732 }
2733
2734 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
2735 {
2736         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2737         struct wireless_dev *wdev = info->user_ptr[1];
2738         struct sk_buff *msg;
2739         int status;
2740
2741         if (!rdev->ops->del_virtual_intf)
2742                 return -EOPNOTSUPP;
2743
2744         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2745         if (msg && nl80211_send_iface(msg, 0, 0, 0, rdev, wdev, true) < 0) {
2746                 nlmsg_free(msg);
2747                 msg = NULL;
2748         }
2749
2750         /*
2751          * If we remove a wireless device without a netdev then clear
2752          * user_ptr[1] so that nl80211_post_doit won't dereference it
2753          * to check if it needs to do dev_put(). Otherwise it crashes
2754          * since the wdev has been freed, unlike with a netdev where
2755          * we need the dev_put() for the netdev to really be freed.
2756          */
2757         if (!wdev->netdev)
2758                 info->user_ptr[1] = NULL;
2759
2760         status = rdev_del_virtual_intf(rdev, wdev);
2761         if (status >= 0 && msg)
2762                 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
2763                                         msg, 0, NL80211_MCGRP_CONFIG,
2764                                         GFP_KERNEL);
2765         else
2766                 nlmsg_free(msg);
2767
2768         return status;
2769 }
2770
2771 static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info)
2772 {
2773         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2774         struct net_device *dev = info->user_ptr[1];
2775         u16 noack_map;
2776
2777         if (!info->attrs[NL80211_ATTR_NOACK_MAP])
2778                 return -EINVAL;
2779
2780         if (!rdev->ops->set_noack_map)
2781                 return -EOPNOTSUPP;
2782
2783         noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]);
2784
2785         return rdev_set_noack_map(rdev, dev, noack_map);
2786 }
2787
2788 struct get_key_cookie {
2789         struct sk_buff *msg;
2790         int error;
2791         int idx;
2792 };
2793
2794 static void get_key_callback(void *c, struct key_params *params)
2795 {
2796         struct nlattr *key;
2797         struct get_key_cookie *cookie = c;
2798
2799         if ((params->key &&
2800              nla_put(cookie->msg, NL80211_ATTR_KEY_DATA,
2801                      params->key_len, params->key)) ||
2802             (params->seq &&
2803              nla_put(cookie->msg, NL80211_ATTR_KEY_SEQ,
2804                      params->seq_len, params->seq)) ||
2805             (params->cipher &&
2806              nla_put_u32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
2807                          params->cipher)))
2808                 goto nla_put_failure;
2809
2810         key = nla_nest_start(cookie->msg, NL80211_ATTR_KEY);
2811         if (!key)
2812                 goto nla_put_failure;
2813
2814         if ((params->key &&
2815              nla_put(cookie->msg, NL80211_KEY_DATA,
2816                      params->key_len, params->key)) ||
2817             (params->seq &&
2818              nla_put(cookie->msg, NL80211_KEY_SEQ,
2819                      params->seq_len, params->seq)) ||
2820             (params->cipher &&
2821              nla_put_u32(cookie->msg, NL80211_KEY_CIPHER,
2822                          params->cipher)))
2823                 goto nla_put_failure;
2824
2825         if (nla_put_u8(cookie->msg, NL80211_ATTR_KEY_IDX, cookie->idx))
2826                 goto nla_put_failure;
2827
2828         nla_nest_end(cookie->msg, key);
2829
2830         return;
2831  nla_put_failure:
2832         cookie->error = 1;
2833 }
2834
2835 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
2836 {
2837         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2838         int err;
2839         struct net_device *dev = info->user_ptr[1];
2840         u8 key_idx = 0;
2841         const u8 *mac_addr = NULL;
2842         bool pairwise;
2843         struct get_key_cookie cookie = {
2844                 .error = 0,
2845         };
2846         void *hdr;
2847         struct sk_buff *msg;
2848
2849         if (info->attrs[NL80211_ATTR_KEY_IDX])
2850                 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
2851
2852         if (key_idx > 5)
2853                 return -EINVAL;
2854
2855         if (info->attrs[NL80211_ATTR_MAC])
2856                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2857
2858         pairwise = !!mac_addr;
2859         if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
2860                 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
2861                 if (kt >= NUM_NL80211_KEYTYPES)
2862                         return -EINVAL;
2863                 if (kt != NL80211_KEYTYPE_GROUP &&
2864                     kt != NL80211_KEYTYPE_PAIRWISE)
2865                         return -EINVAL;
2866                 pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
2867         }
2868
2869         if (!rdev->ops->get_key)
2870                 return -EOPNOTSUPP;
2871
2872         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2873         if (!msg)
2874                 return -ENOMEM;
2875
2876         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
2877                              NL80211_CMD_NEW_KEY);
2878         if (!hdr)
2879                 goto nla_put_failure;
2880
2881         cookie.msg = msg;
2882         cookie.idx = key_idx;
2883
2884         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
2885             nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx))
2886                 goto nla_put_failure;
2887         if (mac_addr &&
2888             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
2889                 goto nla_put_failure;
2890
2891         if (pairwise && mac_addr &&
2892             !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
2893                 return -ENOENT;
2894
2895         err = rdev_get_key(rdev, dev, key_idx, pairwise, mac_addr, &cookie,
2896                            get_key_callback);
2897
2898         if (err)
2899                 goto free_msg;
2900
2901         if (cookie.error)
2902                 goto nla_put_failure;
2903
2904         genlmsg_end(msg, hdr);
2905         return genlmsg_reply(msg, info);
2906
2907  nla_put_failure:
2908         err = -ENOBUFS;
2909  free_msg:
2910         nlmsg_free(msg);
2911         return err;
2912 }
2913
2914 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
2915 {
2916         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2917         struct key_parse key;
2918         int err;
2919         struct net_device *dev = info->user_ptr[1];
2920
2921         err = nl80211_parse_key(info, &key);
2922         if (err)
2923                 return err;
2924
2925         if (key.idx < 0)
2926                 return -EINVAL;
2927
2928         /* only support setting default key */
2929         if (!key.def && !key.defmgmt)
2930                 return -EINVAL;
2931
2932         wdev_lock(dev->ieee80211_ptr);
2933
2934         if (key.def) {
2935                 if (!rdev->ops->set_default_key) {
2936                         err = -EOPNOTSUPP;
2937                         goto out;
2938                 }
2939
2940                 err = nl80211_key_allowed(dev->ieee80211_ptr);
2941                 if (err)
2942                         goto out;
2943
2944                 err = rdev_set_default_key(rdev, dev, key.idx,
2945                                                  key.def_uni, key.def_multi);
2946
2947                 if (err)
2948                         goto out;
2949
2950 #ifdef CONFIG_CFG80211_WEXT
2951                 dev->ieee80211_ptr->wext.default_key = key.idx;
2952 #endif
2953         } else {
2954                 if (key.def_uni || !key.def_multi) {
2955                         err = -EINVAL;
2956                         goto out;
2957                 }
2958
2959                 if (!rdev->ops->set_default_mgmt_key) {
2960                         err = -EOPNOTSUPP;
2961                         goto out;
2962                 }
2963
2964                 err = nl80211_key_allowed(dev->ieee80211_ptr);
2965                 if (err)
2966                         goto out;
2967
2968                 err = rdev_set_default_mgmt_key(rdev, dev, key.idx);
2969                 if (err)
2970                         goto out;
2971
2972 #ifdef CONFIG_CFG80211_WEXT
2973                 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx;
2974 #endif
2975         }
2976
2977  out:
2978         wdev_unlock(dev->ieee80211_ptr);
2979
2980         return err;
2981 }
2982
2983 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
2984 {
2985         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2986         int err;
2987         struct net_device *dev = info->user_ptr[1];
2988         struct key_parse key;
2989         const u8 *mac_addr = NULL;
2990
2991         err = nl80211_parse_key(info, &key);
2992         if (err)
2993                 return err;
2994
2995         if (!key.p.key)
2996                 return -EINVAL;
2997
2998         if (info->attrs[NL80211_ATTR_MAC])
2999                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3000
3001         if (key.type == -1) {
3002                 if (mac_addr)
3003                         key.type = NL80211_KEYTYPE_PAIRWISE;
3004                 else
3005                         key.type = NL80211_KEYTYPE_GROUP;
3006         }
3007
3008         /* for now */
3009         if (key.type != NL80211_KEYTYPE_PAIRWISE &&
3010             key.type != NL80211_KEYTYPE_GROUP)
3011                 return -EINVAL;
3012
3013         if (!rdev->ops->add_key)
3014                 return -EOPNOTSUPP;
3015
3016         if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
3017                                            key.type == NL80211_KEYTYPE_PAIRWISE,
3018                                            mac_addr))
3019                 return -EINVAL;
3020
3021         wdev_lock(dev->ieee80211_ptr);
3022         err = nl80211_key_allowed(dev->ieee80211_ptr);
3023         if (!err)
3024                 err = rdev_add_key(rdev, dev, key.idx,
3025                                    key.type == NL80211_KEYTYPE_PAIRWISE,
3026                                     mac_addr, &key.p);
3027         wdev_unlock(dev->ieee80211_ptr);
3028
3029         return err;
3030 }
3031
3032 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
3033 {
3034         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3035         int err;
3036         struct net_device *dev = info->user_ptr[1];
3037         u8 *mac_addr = NULL;
3038         struct key_parse key;
3039
3040         err = nl80211_parse_key(info, &key);
3041         if (err)
3042                 return err;
3043
3044         if (info->attrs[NL80211_ATTR_MAC])
3045                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3046
3047         if (key.type == -1) {
3048                 if (mac_addr)
3049                         key.type = NL80211_KEYTYPE_PAIRWISE;
3050                 else
3051                         key.type = NL80211_KEYTYPE_GROUP;
3052         }
3053
3054         /* for now */
3055         if (key.type != NL80211_KEYTYPE_PAIRWISE &&
3056             key.type != NL80211_KEYTYPE_GROUP)
3057                 return -EINVAL;
3058
3059         if (!rdev->ops->del_key)
3060                 return -EOPNOTSUPP;
3061
3062         wdev_lock(dev->ieee80211_ptr);
3063         err = nl80211_key_allowed(dev->ieee80211_ptr);
3064
3065         if (key.type == NL80211_KEYTYPE_PAIRWISE && mac_addr &&
3066             !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
3067                 err = -ENOENT;
3068
3069         if (!err)
3070                 err = rdev_del_key(rdev, dev, key.idx,
3071                                    key.type == NL80211_KEYTYPE_PAIRWISE,
3072                                    mac_addr);
3073
3074 #ifdef CONFIG_CFG80211_WEXT
3075         if (!err) {
3076                 if (key.idx == dev->ieee80211_ptr->wext.default_key)
3077                         dev->ieee80211_ptr->wext.default_key = -1;
3078                 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key)
3079                         dev->ieee80211_ptr->wext.default_mgmt_key = -1;
3080         }
3081 #endif
3082         wdev_unlock(dev->ieee80211_ptr);
3083
3084         return err;
3085 }
3086
3087 /* This function returns an error or the number of nested attributes */
3088 static int validate_acl_mac_addrs(struct nlattr *nl_attr)
3089 {
3090         struct nlattr *attr;
3091         int n_entries = 0, tmp;
3092
3093         nla_for_each_nested(attr, nl_attr, tmp) {
3094                 if (nla_len(attr) != ETH_ALEN)
3095                         return -EINVAL;
3096
3097                 n_entries++;
3098         }
3099
3100         return n_entries;
3101 }
3102
3103 /*
3104  * This function parses ACL information and allocates memory for ACL data.
3105  * On successful return, the calling function is responsible to free the
3106  * ACL buffer returned by this function.
3107  */
3108 static struct cfg80211_acl_data *parse_acl_data(struct wiphy *wiphy,
3109                                                 struct genl_info *info)
3110 {
3111         enum nl80211_acl_policy acl_policy;
3112         struct nlattr *attr;
3113         struct cfg80211_acl_data *acl;
3114         int i = 0, n_entries, tmp;
3115
3116         if (!wiphy->max_acl_mac_addrs)
3117                 return ERR_PTR(-EOPNOTSUPP);
3118
3119         if (!info->attrs[NL80211_ATTR_ACL_POLICY])
3120                 return ERR_PTR(-EINVAL);
3121
3122         acl_policy = nla_get_u32(info->attrs[NL80211_ATTR_ACL_POLICY]);
3123         if (acl_policy != NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED &&
3124             acl_policy != NL80211_ACL_POLICY_DENY_UNLESS_LISTED)
3125                 return ERR_PTR(-EINVAL);
3126
3127         if (!info->attrs[NL80211_ATTR_MAC_ADDRS])
3128                 return ERR_PTR(-EINVAL);
3129
3130         n_entries = validate_acl_mac_addrs(info->attrs[NL80211_ATTR_MAC_ADDRS]);
3131         if (n_entries < 0)
3132                 return ERR_PTR(n_entries);
3133
3134         if (n_entries > wiphy->max_acl_mac_addrs)
3135                 return ERR_PTR(-ENOTSUPP);
3136
3137         acl = kzalloc(sizeof(*acl) + (sizeof(struct mac_address) * n_entries),
3138                       GFP_KERNEL);
3139         if (!acl)
3140                 return ERR_PTR(-ENOMEM);
3141
3142         nla_for_each_nested(attr, info->attrs[NL80211_ATTR_MAC_ADDRS], tmp) {
3143                 memcpy(acl->mac_addrs[i].addr, nla_data(attr), ETH_ALEN);
3144                 i++;
3145         }
3146
3147         acl->n_acl_entries = n_entries;
3148         acl->acl_policy = acl_policy;
3149
3150         return acl;
3151 }
3152
3153 static int nl80211_set_mac_acl(struct sk_buff *skb, struct genl_info *info)
3154 {
3155         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3156         struct net_device *dev = info->user_ptr[1];
3157         struct cfg80211_acl_data *acl;
3158         int err;
3159
3160         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3161             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3162                 return -EOPNOTSUPP;
3163
3164         if (!dev->ieee80211_ptr->beacon_interval)
3165                 return -EINVAL;
3166
3167         acl = parse_acl_data(&rdev->wiphy, info);
3168         if (IS_ERR(acl))
3169                 return PTR_ERR(acl);
3170
3171         err = rdev_set_mac_acl(rdev, dev, acl);
3172
3173         kfree(acl);
3174
3175         return err;
3176 }
3177
3178 static int nl80211_parse_beacon(struct nlattr *attrs[],
3179                                 struct cfg80211_beacon_data *bcn)
3180 {
3181         bool haveinfo = false;
3182
3183         if (!is_valid_ie_attr(attrs[NL80211_ATTR_BEACON_TAIL]) ||
3184             !is_valid_ie_attr(attrs[NL80211_ATTR_IE]) ||
3185             !is_valid_ie_attr(attrs[NL80211_ATTR_IE_PROBE_RESP]) ||
3186             !is_valid_ie_attr(attrs[NL80211_ATTR_IE_ASSOC_RESP]))
3187                 return -EINVAL;
3188
3189         memset(bcn, 0, sizeof(*bcn));
3190
3191         if (attrs[NL80211_ATTR_BEACON_HEAD]) {
3192                 bcn->head = nla_data(attrs[NL80211_ATTR_BEACON_HEAD]);
3193                 bcn->head_len = nla_len(attrs[NL80211_ATTR_BEACON_HEAD]);
3194                 if (!bcn->head_len)
3195                         return -EINVAL;
3196                 haveinfo = true;
3197         }
3198
3199         if (attrs[NL80211_ATTR_BEACON_TAIL]) {
3200                 bcn->tail = nla_data(attrs[NL80211_ATTR_BEACON_TAIL]);
3201                 bcn->tail_len = nla_len(attrs[NL80211_ATTR_BEACON_TAIL]);
3202                 haveinfo = true;
3203         }
3204
3205         if (!haveinfo)
3206                 return -EINVAL;
3207
3208         if (attrs[NL80211_ATTR_IE]) {
3209                 bcn->beacon_ies = nla_data(attrs[NL80211_ATTR_IE]);
3210                 bcn->beacon_ies_len = nla_len(attrs[NL80211_ATTR_IE]);
3211         }
3212
3213         if (attrs[NL80211_ATTR_IE_PROBE_RESP]) {
3214                 bcn->proberesp_ies =
3215                         nla_data(attrs[NL80211_ATTR_IE_PROBE_RESP]);
3216                 bcn->proberesp_ies_len =
3217                         nla_len(attrs[NL80211_ATTR_IE_PROBE_RESP]);
3218         }
3219
3220         if (attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
3221                 bcn->assocresp_ies =
3222                         nla_data(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
3223                 bcn->assocresp_ies_len =
3224                         nla_len(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
3225         }
3226
3227         if (attrs[NL80211_ATTR_PROBE_RESP]) {
3228                 bcn->probe_resp = nla_data(attrs[NL80211_ATTR_PROBE_RESP]);
3229                 bcn->probe_resp_len = nla_len(attrs[NL80211_ATTR_PROBE_RESP]);
3230         }
3231
3232         return 0;
3233 }
3234
3235 static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev,
3236                                    struct cfg80211_ap_settings *params)
3237 {
3238         struct wireless_dev *wdev;
3239         bool ret = false;
3240
3241         list_for_each_entry(wdev, &rdev->wdev_list, list) {
3242                 if (wdev->iftype != NL80211_IFTYPE_AP &&
3243                     wdev->iftype != NL80211_IFTYPE_P2P_GO)
3244                         continue;
3245
3246                 if (!wdev->preset_chandef.chan)
3247                         continue;
3248
3249                 params->chandef = wdev->preset_chandef;
3250                 ret = true;
3251                 break;
3252         }
3253
3254         return ret;
3255 }
3256
3257 static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev,
3258                                     enum nl80211_auth_type auth_type,
3259                                     enum nl80211_commands cmd)
3260 {
3261         if (auth_type > NL80211_AUTHTYPE_MAX)
3262                 return false;
3263
3264         switch (cmd) {
3265         case NL80211_CMD_AUTHENTICATE:
3266                 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
3267                     auth_type == NL80211_AUTHTYPE_SAE)
3268                         return false;
3269                 return true;
3270         case NL80211_CMD_CONNECT:
3271         case NL80211_CMD_START_AP:
3272                 /* SAE not supported yet */
3273                 if (auth_type == NL80211_AUTHTYPE_SAE)
3274                         return false;
3275                 return true;
3276         default:
3277                 return false;
3278         }
3279 }
3280
3281 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
3282 {
3283         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3284         struct net_device *dev = info->user_ptr[1];
3285         struct wireless_dev *wdev = dev->ieee80211_ptr;
3286         struct cfg80211_ap_settings params;
3287         int err;
3288
3289         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3290             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3291                 return -EOPNOTSUPP;
3292
3293         if (!rdev->ops->start_ap)
3294                 return -EOPNOTSUPP;
3295
3296         if (wdev->beacon_interval)
3297                 return -EALREADY;
3298
3299         memset(&params, 0, sizeof(params));
3300
3301         /* these are required for START_AP */
3302         if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
3303             !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
3304             !info->attrs[NL80211_ATTR_BEACON_HEAD])
3305                 return -EINVAL;
3306
3307         err = nl80211_parse_beacon(info->attrs, &params.beacon);
3308         if (err)
3309                 return err;
3310
3311         params.beacon_interval =
3312                 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
3313         params.dtim_period =
3314                 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
3315
3316         err = cfg80211_validate_beacon_int(rdev, params.beacon_interval);
3317         if (err)
3318                 return err;
3319
3320         /*
3321          * In theory, some of these attributes should be required here
3322          * but since they were not used when the command was originally
3323          * added, keep them optional for old user space programs to let
3324          * them continue to work with drivers that do not need the
3325          * additional information -- drivers must check!
3326          */
3327         if (info->attrs[NL80211_ATTR_SSID]) {
3328                 params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
3329                 params.ssid_len =
3330                         nla_len(info->attrs[NL80211_ATTR_SSID]);
3331                 if (params.ssid_len == 0 ||
3332                     params.ssid_len > IEEE80211_MAX_SSID_LEN)
3333                         return -EINVAL;
3334         }
3335
3336         if (info->attrs[NL80211_ATTR_HIDDEN_SSID]) {
3337                 params.hidden_ssid = nla_get_u32(
3338                         info->attrs[NL80211_ATTR_HIDDEN_SSID]);
3339                 if (params.hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE &&
3340                     params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_LEN &&
3341                     params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_CONTENTS)
3342                         return -EINVAL;
3343         }
3344
3345         params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
3346
3347         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
3348                 params.auth_type = nla_get_u32(
3349                         info->attrs[NL80211_ATTR_AUTH_TYPE]);
3350                 if (!nl80211_valid_auth_type(rdev, params.auth_type,
3351                                              NL80211_CMD_START_AP))
3352                         return -EINVAL;
3353         } else
3354                 params.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
3355
3356         err = nl80211_crypto_settings(rdev, info, &params.crypto,
3357                                       NL80211_MAX_NR_CIPHER_SUITES);
3358         if (err)
3359                 return err;
3360
3361         if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) {
3362                 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER))
3363                         return -EOPNOTSUPP;
3364                 params.inactivity_timeout = nla_get_u16(
3365                         info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]);
3366         }
3367
3368         if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
3369                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3370                         return -EINVAL;
3371                 params.p2p_ctwindow =
3372                         nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
3373                 if (params.p2p_ctwindow > 127)
3374                         return -EINVAL;
3375                 if (params.p2p_ctwindow != 0 &&
3376                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
3377                         return -EINVAL;
3378         }
3379
3380         if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
3381                 u8 tmp;
3382
3383                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3384                         return -EINVAL;
3385                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
3386                 if (tmp > 1)
3387                         return -EINVAL;
3388                 params.p2p_opp_ps = tmp;
3389                 if (params.p2p_opp_ps != 0 &&
3390                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
3391                         return -EINVAL;
3392         }
3393
3394         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
3395                 err = nl80211_parse_chandef(rdev, info, &params.chandef);
3396                 if (err)
3397                         return err;
3398         } else if (wdev->preset_chandef.chan) {
3399                 params.chandef = wdev->preset_chandef;
3400         } else if (!nl80211_get_ap_channel(rdev, &params))
3401                 return -EINVAL;
3402
3403         if (!cfg80211_reg_can_beacon(&rdev->wiphy, &params.chandef,
3404                                      wdev->iftype))
3405                 return -EINVAL;
3406
3407         if (info->attrs[NL80211_ATTR_ACL_POLICY]) {
3408                 params.acl = parse_acl_data(&rdev->wiphy, info);
3409                 if (IS_ERR(params.acl))
3410                         return PTR_ERR(params.acl);
3411         }
3412
3413         if (info->attrs[NL80211_ATTR_SMPS_MODE]) {
3414                 params.smps_mode =
3415                         nla_get_u8(info->attrs[NL80211_ATTR_SMPS_MODE]);
3416                 switch (params.smps_mode) {
3417                 case NL80211_SMPS_OFF:
3418                         break;
3419                 case NL80211_SMPS_STATIC:
3420                         if (!(rdev->wiphy.features &
3421                               NL80211_FEATURE_STATIC_SMPS))
3422                                 return -EINVAL;
3423                         break;
3424                 case NL80211_SMPS_DYNAMIC:
3425                         if (!(rdev->wiphy.features &
3426                               NL80211_FEATURE_DYNAMIC_SMPS))
3427                                 return -EINVAL;
3428                         break;
3429                 default:
3430                         return -EINVAL;
3431                 }
3432         } else {
3433                 params.smps_mode = NL80211_SMPS_OFF;
3434         }
3435
3436         wdev_lock(wdev);
3437         err = rdev_start_ap(rdev, dev, &params);
3438         if (!err) {
3439                 wdev->preset_chandef = params.chandef;
3440                 wdev->beacon_interval = params.beacon_interval;
3441                 wdev->chandef = params.chandef;
3442                 wdev->ssid_len = params.ssid_len;
3443                 memcpy(wdev->ssid, params.ssid, wdev->ssid_len);
3444         }
3445         wdev_unlock(wdev);
3446
3447         kfree(params.acl);
3448
3449         return err;
3450 }
3451
3452 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info)
3453 {
3454         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3455         struct net_device *dev = info->user_ptr[1];
3456         struct wireless_dev *wdev = dev->ieee80211_ptr;
3457         struct cfg80211_beacon_data params;
3458         int err;
3459
3460         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3461             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3462                 return -EOPNOTSUPP;
3463
3464         if (!rdev->ops->change_beacon)
3465                 return -EOPNOTSUPP;
3466
3467         if (!wdev->beacon_interval)
3468                 return -EINVAL;
3469
3470         err = nl80211_parse_beacon(info->attrs, &params);
3471         if (err)
3472                 return err;
3473
3474         wdev_lock(wdev);
3475         err = rdev_change_beacon(rdev, dev, &params);
3476         wdev_unlock(wdev);
3477
3478         return err;
3479 }
3480
3481 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info)
3482 {
3483         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3484         struct net_device *dev = info->user_ptr[1];
3485
3486         return cfg80211_stop_ap(rdev, dev, false);
3487 }
3488
3489 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
3490         [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
3491         [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
3492         [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
3493         [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
3494         [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
3495         [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG },
3496 };
3497
3498 static int parse_station_flags(struct genl_info *info,
3499                                enum nl80211_iftype iftype,
3500                                struct station_parameters *params)
3501 {
3502         struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
3503         struct nlattr *nla;
3504         int flag;
3505
3506         /*
3507          * Try parsing the new attribute first so userspace
3508          * can specify both for older kernels.
3509          */
3510         nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
3511         if (nla) {
3512                 struct nl80211_sta_flag_update *sta_flags;
3513
3514                 sta_flags = nla_data(nla);
3515                 params->sta_flags_mask = sta_flags->mask;
3516                 params->sta_flags_set = sta_flags->set;
3517                 params->sta_flags_set &= params->sta_flags_mask;
3518                 if ((params->sta_flags_mask |
3519                      params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
3520                         return -EINVAL;
3521                 return 0;
3522         }
3523
3524         /* if present, parse the old attribute */
3525
3526         nla = info->attrs[NL80211_ATTR_STA_FLAGS];
3527         if (!nla)
3528                 return 0;
3529
3530         if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX,
3531                              nla, sta_flags_policy))
3532                 return -EINVAL;
3533
3534         /*
3535          * Only allow certain flags for interface types so that
3536          * other attributes are silently ignored. Remember that
3537          * this is backward compatibility code with old userspace
3538          * and shouldn't be hit in other cases anyway.
3539          */
3540         switch (iftype) {
3541         case NL80211_IFTYPE_AP:
3542         case NL80211_IFTYPE_AP_VLAN:
3543         case NL80211_IFTYPE_P2P_GO:
3544                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
3545                                          BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
3546                                          BIT(NL80211_STA_FLAG_WME) |
3547                                          BIT(NL80211_STA_FLAG_MFP);
3548                 break;
3549         case NL80211_IFTYPE_P2P_CLIENT:
3550         case NL80211_IFTYPE_STATION:
3551                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
3552                                          BIT(NL80211_STA_FLAG_TDLS_PEER);
3553                 break;
3554         case NL80211_IFTYPE_MESH_POINT:
3555                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3556                                          BIT(NL80211_STA_FLAG_MFP) |
3557                                          BIT(NL80211_STA_FLAG_AUTHORIZED);
3558         default:
3559                 return -EINVAL;
3560         }
3561
3562         for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) {
3563                 if (flags[flag]) {
3564                         params->sta_flags_set |= (1<<flag);
3565
3566                         /* no longer support new API additions in old API */
3567                         if (flag > NL80211_STA_FLAG_MAX_OLD_API)
3568                                 return -EINVAL;
3569                 }
3570         }
3571
3572         return 0;
3573 }
3574
3575 static bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info,
3576                                  int attr)
3577 {
3578         struct nlattr *rate;
3579         u32 bitrate;
3580         u16 bitrate_compat;
3581         enum nl80211_attrs rate_flg;
3582
3583         rate = nla_nest_start(msg, attr);
3584         if (!rate)
3585                 return false;
3586
3587         /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
3588         bitrate = cfg80211_calculate_bitrate(info);
3589         /* report 16-bit bitrate only if we can */
3590         bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0;
3591         if (bitrate > 0 &&
3592             nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate))
3593                 return false;
3594         if (bitrate_compat > 0 &&
3595             nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat))
3596                 return false;
3597
3598         switch (info->bw) {
3599         case RATE_INFO_BW_5:
3600                 rate_flg = NL80211_RATE_INFO_5_MHZ_WIDTH;
3601                 break;
3602         case RATE_INFO_BW_10:
3603                 rate_flg = NL80211_RATE_INFO_10_MHZ_WIDTH;
3604                 break;
3605         default:
3606                 WARN_ON(1);
3607                 /* fall through */
3608         case RATE_INFO_BW_20:
3609                 rate_flg = 0;
3610                 break;
3611         case RATE_INFO_BW_40:
3612                 rate_flg = NL80211_RATE_INFO_40_MHZ_WIDTH;
3613                 break;
3614         case RATE_INFO_BW_80:
3615                 rate_flg = NL80211_RATE_INFO_80_MHZ_WIDTH;
3616                 break;
3617         case RATE_INFO_BW_160:
3618                 rate_flg = NL80211_RATE_INFO_160_MHZ_WIDTH;
3619                 break;
3620         }
3621
3622         if (rate_flg && nla_put_flag(msg, rate_flg))
3623                 return false;
3624
3625         if (info->flags & RATE_INFO_FLAGS_MCS) {
3626                 if (nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs))
3627                         return false;
3628                 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
3629                     nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
3630                         return false;
3631         } else if (info->flags & RATE_INFO_FLAGS_VHT_MCS) {
3632                 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_MCS, info->mcs))
3633                         return false;
3634                 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_NSS, info->nss))
3635                         return false;
3636                 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
3637                     nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
3638                         return false;
3639         }
3640
3641         nla_nest_end(msg, rate);
3642         return true;
3643 }
3644
3645 static bool nl80211_put_signal(struct sk_buff *msg, u8 mask, s8 *signal,
3646                                int id)
3647 {
3648         void *attr;
3649         int i = 0;
3650
3651         if (!mask)
3652                 return true;
3653
3654         attr = nla_nest_start(msg, id);
3655         if (!attr)
3656                 return false;
3657
3658         for (i = 0; i < IEEE80211_MAX_CHAINS; i++) {
3659                 if (!(mask & BIT(i)))
3660                         continue;
3661
3662                 if (nla_put_u8(msg, i, signal[i]))
3663                         return false;
3664         }
3665
3666         nla_nest_end(msg, attr);
3667
3668         return true;
3669 }
3670
3671 static int nl80211_send_station(struct sk_buff *msg, u32 cmd, u32 portid,
3672                                 u32 seq, int flags,
3673                                 struct cfg80211_registered_device *rdev,
3674                                 struct net_device *dev,
3675                                 const u8 *mac_addr, struct station_info *sinfo)
3676 {
3677         void *hdr;
3678         struct nlattr *sinfoattr, *bss_param;
3679
3680         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
3681         if (!hdr)
3682                 return -1;
3683
3684         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3685             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
3686             nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation))
3687                 goto nla_put_failure;
3688
3689         sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO);
3690         if (!sinfoattr)
3691                 goto nla_put_failure;
3692
3693 #define PUT_SINFO(attr, memb, type) do {                                \
3694         if (sinfo->filled & BIT(NL80211_STA_INFO_ ## attr) &&           \
3695             nla_put_ ## type(msg, NL80211_STA_INFO_ ## attr,            \
3696                              sinfo->memb))                              \
3697                 goto nla_put_failure;                                   \
3698         } while (0)
3699
3700         PUT_SINFO(CONNECTED_TIME, connected_time, u32);
3701         PUT_SINFO(INACTIVE_TIME, inactive_time, u32);
3702
3703         if (sinfo->filled & (BIT(NL80211_STA_INFO_RX_BYTES) |
3704                              BIT(NL80211_STA_INFO_RX_BYTES64)) &&
3705             nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES,
3706                         (u32)sinfo->rx_bytes))
3707                 goto nla_put_failure;
3708
3709         if (sinfo->filled & (BIT(NL80211_STA_INFO_TX_BYTES) |
3710                              BIT(NL80211_STA_INFO_TX_BYTES64)) &&
3711             nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES,
3712                         (u32)sinfo->tx_bytes))
3713                 goto nla_put_failure;
3714
3715         PUT_SINFO(RX_BYTES64, rx_bytes, u64);
3716         PUT_SINFO(TX_BYTES64, tx_bytes, u64);
3717         PUT_SINFO(LLID, llid, u16);
3718         PUT_SINFO(PLID, plid, u16);
3719         PUT_SINFO(PLINK_STATE, plink_state, u8);
3720
3721         switch (rdev->wiphy.signal_type) {
3722         case CFG80211_SIGNAL_TYPE_MBM:
3723                 PUT_SINFO(SIGNAL, signal, u8);
3724                 PUT_SINFO(SIGNAL_AVG, signal_avg, u8);
3725                 break;
3726         default:
3727                 break;
3728         }
3729         if (sinfo->filled & BIT(NL80211_STA_INFO_CHAIN_SIGNAL)) {
3730                 if (!nl80211_put_signal(msg, sinfo->chains,
3731                                         sinfo->chain_signal,
3732                                         NL80211_STA_INFO_CHAIN_SIGNAL))
3733                         goto nla_put_failure;
3734         }
3735         if (sinfo->filled & BIT(NL80211_STA_INFO_CHAIN_SIGNAL_AVG)) {
3736                 if (!nl80211_put_signal(msg, sinfo->chains,
3737                                         sinfo->chain_signal_avg,
3738                                         NL80211_STA_INFO_CHAIN_SIGNAL_AVG))
3739                         goto nla_put_failure;
3740         }
3741         if (sinfo->filled & BIT(NL80211_STA_INFO_TX_BITRATE)) {
3742                 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
3743                                           NL80211_STA_INFO_TX_BITRATE))
3744                         goto nla_put_failure;
3745         }
3746         if (sinfo->filled & BIT(NL80211_STA_INFO_RX_BITRATE)) {
3747                 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
3748                                           NL80211_STA_INFO_RX_BITRATE))
3749                         goto nla_put_failure;
3750         }
3751
3752         PUT_SINFO(RX_PACKETS, rx_packets, u32);
3753         PUT_SINFO(TX_PACKETS, tx_packets, u32);
3754         PUT_SINFO(TX_RETRIES, tx_retries, u32);
3755         PUT_SINFO(TX_FAILED, tx_failed, u32);
3756         PUT_SINFO(EXPECTED_THROUGHPUT, expected_throughput, u32);
3757         PUT_SINFO(BEACON_LOSS, beacon_loss_count, u32);
3758         PUT_SINFO(LOCAL_PM, local_pm, u32);
3759         PUT_SINFO(PEER_PM, peer_pm, u32);
3760         PUT_SINFO(NONPEER_PM, nonpeer_pm, u32);
3761
3762         if (sinfo->filled & BIT(NL80211_STA_INFO_BSS_PARAM)) {
3763                 bss_param = nla_nest_start(msg, NL80211_STA_INFO_BSS_PARAM);
3764                 if (!bss_param)
3765                         goto nla_put_failure;
3766
3767                 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) &&
3768                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) ||
3769                     ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) &&
3770                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) ||
3771                     ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) &&
3772                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) ||
3773                     nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
3774                                sinfo->bss_param.dtim_period) ||
3775                     nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
3776                                 sinfo->bss_param.beacon_interval))
3777                         goto nla_put_failure;
3778
3779                 nla_nest_end(msg, bss_param);
3780         }
3781         if ((sinfo->filled & BIT(NL80211_STA_INFO_STA_FLAGS)) &&
3782             nla_put(msg, NL80211_STA_INFO_STA_FLAGS,
3783                     sizeof(struct nl80211_sta_flag_update),
3784                     &sinfo->sta_flags))
3785                 goto nla_put_failure;
3786
3787         PUT_SINFO(T_OFFSET, t_offset, u64);
3788         PUT_SINFO(RX_DROP_MISC, rx_dropped_misc, u64);
3789         PUT_SINFO(BEACON_RX, rx_beacon, u64);
3790         PUT_SINFO(BEACON_SIGNAL_AVG, rx_beacon_signal_avg, u8);
3791
3792 #undef PUT_SINFO
3793
3794         if (sinfo->filled & BIT(NL80211_STA_INFO_TID_STATS)) {
3795                 struct nlattr *tidsattr;
3796                 int tid;
3797
3798                 tidsattr = nla_nest_start(msg, NL80211_STA_INFO_TID_STATS);
3799                 if (!tidsattr)
3800                         goto nla_put_failure;
3801
3802                 for (tid = 0; tid < IEEE80211_NUM_TIDS + 1; tid++) {
3803                         struct cfg80211_tid_stats *tidstats;
3804                         struct nlattr *tidattr;
3805
3806                         tidstats = &sinfo->pertid[tid];
3807
3808                         if (!tidstats->filled)
3809                                 continue;
3810
3811                         tidattr = nla_nest_start(msg, tid + 1);
3812                         if (!tidattr)
3813                                 goto nla_put_failure;
3814
3815 #define PUT_TIDVAL(attr, memb, type) do {                               \
3816         if (tidstats->filled & BIT(NL80211_TID_STATS_ ## attr) &&       \
3817             nla_put_ ## type(msg, NL80211_TID_STATS_ ## attr,           \
3818                              tidstats->memb))                           \
3819                 goto nla_put_failure;                                   \
3820         } while (0)
3821
3822                         PUT_TIDVAL(RX_MSDU, rx_msdu, u64);
3823                         PUT_TIDVAL(TX_MSDU, tx_msdu, u64);
3824                         PUT_TIDVAL(TX_MSDU_RETRIES, tx_msdu_retries, u64);
3825                         PUT_TIDVAL(TX_MSDU_FAILED, tx_msdu_failed, u64);
3826
3827 #undef PUT_TIDVAL
3828                         nla_nest_end(msg, tidattr);
3829                 }
3830
3831                 nla_nest_end(msg, tidsattr);
3832         }
3833
3834         nla_nest_end(msg, sinfoattr);
3835
3836         if (sinfo->assoc_req_ies_len &&
3837             nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
3838                     sinfo->assoc_req_ies))
3839                 goto nla_put_failure;
3840
3841         return genlmsg_end(msg, hdr);
3842
3843  nla_put_failure:
3844         genlmsg_cancel(msg, hdr);
3845         return -EMSGSIZE;
3846 }
3847
3848 static int nl80211_dump_station(struct sk_buff *skb,
3849                                 struct netlink_callback *cb)
3850 {
3851         struct station_info sinfo;
3852         struct cfg80211_registered_device *rdev;
3853         struct wireless_dev *wdev;
3854         u8 mac_addr[ETH_ALEN];
3855         int sta_idx = cb->args[2];
3856         int err;
3857
3858         err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
3859         if (err)
3860                 return err;
3861
3862         if (!wdev->netdev) {
3863                 err = -EINVAL;
3864                 goto out_err;
3865         }
3866
3867         if (!rdev->ops->dump_station) {
3868                 err = -EOPNOTSUPP;
3869                 goto out_err;
3870         }
3871
3872         while (1) {
3873                 memset(&sinfo, 0, sizeof(sinfo));
3874                 err = rdev_dump_station(rdev, wdev->netdev, sta_idx,
3875                                         mac_addr, &sinfo);
3876                 if (err == -ENOENT)
3877                         break;
3878                 if (err)
3879                         goto out_err;
3880
3881                 if (nl80211_send_station(skb, NL80211_CMD_NEW_STATION,
3882                                 NETLINK_CB(cb->skb).portid,
3883                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
3884                                 rdev, wdev->netdev, mac_addr,
3885                                 &sinfo) < 0)
3886                         goto out;
3887
3888                 sta_idx++;
3889         }
3890
3891
3892  out:
3893         cb->args[2] = sta_idx;
3894         err = skb->len;
3895  out_err:
3896         nl80211_finish_wdev_dump(rdev);
3897
3898         return err;
3899 }
3900
3901 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
3902 {
3903         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3904         struct net_device *dev = info->user_ptr[1];
3905         struct station_info sinfo;
3906         struct sk_buff *msg;
3907         u8 *mac_addr = NULL;
3908         int err;
3909
3910         memset(&sinfo, 0, sizeof(sinfo));
3911
3912         if (!info->attrs[NL80211_ATTR_MAC])
3913                 return -EINVAL;
3914
3915         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3916
3917         if (!rdev->ops->get_station)
3918                 return -EOPNOTSUPP;
3919
3920         err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
3921         if (err)
3922                 return err;
3923
3924         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3925         if (!msg)
3926                 return -ENOMEM;
3927
3928         if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION,
3929                                  info->snd_portid, info->snd_seq, 0,
3930                                  rdev, dev, mac_addr, &sinfo) < 0) {
3931                 nlmsg_free(msg);
3932                 return -ENOBUFS;
3933         }
3934
3935         return genlmsg_reply(msg, info);
3936 }
3937
3938 int cfg80211_check_station_change(struct wiphy *wiphy,
3939                                   struct station_parameters *params,
3940                                   enum cfg80211_station_type statype)
3941 {
3942         if (params->listen_interval != -1)
3943                 return -EINVAL;
3944         if (params->aid &&
3945             !(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
3946                 return -EINVAL;
3947
3948         /* When you run into this, adjust the code below for the new flag */
3949         BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
3950
3951         switch (statype) {
3952         case CFG80211_STA_MESH_PEER_KERNEL:
3953         case CFG80211_STA_MESH_PEER_USER:
3954                 /*
3955                  * No ignoring the TDLS flag here -- the userspace mesh
3956                  * code doesn't have the bug of including TDLS in the
3957                  * mask everywhere.
3958                  */
3959                 if (params->sta_flags_mask &
3960                                 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3961                                   BIT(NL80211_STA_FLAG_MFP) |
3962                                   BIT(NL80211_STA_FLAG_AUTHORIZED)))
3963                         return -EINVAL;
3964                 break;
3965         case CFG80211_STA_TDLS_PEER_SETUP:
3966         case CFG80211_STA_TDLS_PEER_ACTIVE:
3967                 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
3968                         return -EINVAL;
3969                 /* ignore since it can't change */
3970                 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
3971                 break;
3972         default:
3973                 /* disallow mesh-specific things */
3974                 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
3975                         return -EINVAL;
3976                 if (params->local_pm)
3977                         return -EINVAL;
3978                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
3979                         return -EINVAL;
3980         }
3981
3982         if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
3983             statype != CFG80211_STA_TDLS_PEER_ACTIVE) {
3984                 /* TDLS can't be set, ... */
3985                 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
3986                         return -EINVAL;
3987                 /*
3988                  * ... but don't bother the driver with it. This works around
3989                  * a hostapd/wpa_supplicant issue -- it always includes the
3990                  * TLDS_PEER flag in the mask even for AP mode.
3991                  */
3992                 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
3993         }
3994
3995         if (statype != CFG80211_STA_TDLS_PEER_SETUP) {
3996                 /* reject other things that can't change */
3997                 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD)
3998                         return -EINVAL;
3999                 if (params->sta_modify_mask & STATION_PARAM_APPLY_CAPABILITY)
4000                         return -EINVAL;
4001                 if (params->supported_rates)
4002                         return -EINVAL;
4003                 if (params->ext_capab || params->ht_capa || params->vht_capa)
4004                         return -EINVAL;
4005         }
4006
4007         if (statype != CFG80211_STA_AP_CLIENT) {
4008                 if (params->vlan)
4009                         return -EINVAL;
4010         }
4011
4012         switch (statype) {
4013         case CFG80211_STA_AP_MLME_CLIENT:
4014                 /* Use this only for authorizing/unauthorizing a station */
4015                 if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)))
4016                         return -EOPNOTSUPP;
4017                 break;
4018         case CFG80211_STA_AP_CLIENT:
4019                 /* accept only the listed bits */
4020                 if (params->sta_flags_mask &
4021                                 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
4022                                   BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4023                                   BIT(NL80211_STA_FLAG_ASSOCIATED) |
4024                                   BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
4025                                   BIT(NL80211_STA_FLAG_WME) |
4026                                   BIT(NL80211_STA_FLAG_MFP)))
4027                         return -EINVAL;
4028
4029                 /* but authenticated/associated only if driver handles it */
4030                 if (!(wiphy->features & NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
4031                     params->sta_flags_mask &
4032                                 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4033                                  BIT(NL80211_STA_FLAG_ASSOCIATED)))
4034                         return -EINVAL;
4035                 break;
4036         case CFG80211_STA_IBSS:
4037         case CFG80211_STA_AP_STA:
4038                 /* reject any changes other than AUTHORIZED */
4039                 if (params->sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
4040                         return -EINVAL;
4041                 break;
4042         case CFG80211_STA_TDLS_PEER_SETUP:
4043                 /* reject any changes other than AUTHORIZED or WME */
4044                 if (params->sta_flags_mask & ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
4045                                                BIT(NL80211_STA_FLAG_WME)))
4046                         return -EINVAL;
4047                 /* force (at least) rates when authorizing */
4048                 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED) &&
4049                     !params->supported_rates)
4050                         return -EINVAL;
4051                 break;
4052         case CFG80211_STA_TDLS_PEER_ACTIVE:
4053                 /* reject any changes */
4054                 return -EINVAL;
4055         case CFG80211_STA_MESH_PEER_KERNEL:
4056                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
4057                         return -EINVAL;
4058                 break;
4059         case CFG80211_STA_MESH_PEER_USER:
4060                 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
4061                         return -EINVAL;
4062                 break;
4063         }
4064
4065         return 0;
4066 }
4067 EXPORT_SYMBOL(cfg80211_check_station_change);
4068
4069 /*
4070  * Get vlan interface making sure it is running and on the right wiphy.
4071  */
4072 static struct net_device *get_vlan(struct genl_info *info,
4073                                    struct cfg80211_registered_device *rdev)
4074 {
4075         struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
4076         struct net_device *v;
4077         int ret;
4078
4079         if (!vlanattr)
4080                 return NULL;
4081
4082         v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr));
4083         if (!v)
4084                 return ERR_PTR(-ENODEV);
4085
4086         if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) {
4087                 ret = -EINVAL;
4088                 goto error;
4089         }
4090
4091         if (v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
4092             v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4093             v->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
4094                 ret = -EINVAL;
4095                 goto error;
4096         }
4097
4098         if (!netif_running(v)) {
4099                 ret = -ENETDOWN;
4100                 goto error;
4101         }
4102
4103         return v;
4104  error:
4105         dev_put(v);
4106         return ERR_PTR(ret);
4107 }
4108
4109 static const struct nla_policy
4110 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] = {
4111         [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
4112         [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
4113 };
4114
4115 static int nl80211_parse_sta_wme(struct genl_info *info,
4116                                  struct station_parameters *params)
4117 {
4118         struct nlattr *tb[NL80211_STA_WME_MAX + 1];
4119         struct nlattr *nla;
4120         int err;
4121
4122         /* parse WME attributes if present */
4123         if (!info->attrs[NL80211_ATTR_STA_WME])
4124                 return 0;
4125
4126         nla = info->attrs[NL80211_ATTR_STA_WME];
4127         err = nla_parse_nested(tb, NL80211_STA_WME_MAX, nla,
4128                                nl80211_sta_wme_policy);
4129         if (err)
4130                 return err;
4131
4132         if (tb[NL80211_STA_WME_UAPSD_QUEUES])
4133                 params->uapsd_queues = nla_get_u8(
4134                         tb[NL80211_STA_WME_UAPSD_QUEUES]);
4135         if (params->uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
4136                 return -EINVAL;
4137
4138         if (tb[NL80211_STA_WME_MAX_SP])
4139                 params->max_sp = nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
4140
4141         if (params->max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
4142                 return -EINVAL;
4143
4144         params->sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
4145
4146         return 0;
4147 }
4148
4149 static int nl80211_parse_sta_channel_info(struct genl_info *info,
4150                                       struct station_parameters *params)
4151 {
4152         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]) {
4153                 params->supported_channels =
4154                      nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
4155                 params->supported_channels_len =
4156                      nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
4157                 /*
4158                  * Need to include at least one (first channel, number of
4159                  * channels) tuple for each subband, and must have proper
4160                  * tuples for the rest of the data as well.
4161                  */
4162                 if (params->supported_channels_len < 2)
4163                         return -EINVAL;
4164                 if (params->supported_channels_len % 2)
4165                         return -EINVAL;
4166         }
4167
4168         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]) {
4169                 params->supported_oper_classes =
4170                  nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
4171                 params->supported_oper_classes_len =
4172                   nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
4173                 /*
4174                  * The value of the Length field of the Supported Operating
4175                  * Classes element is between 2 and 253.
4176                  */
4177                 if (params->supported_oper_classes_len < 2 ||
4178                     params->supported_oper_classes_len > 253)
4179                         return -EINVAL;
4180         }
4181         return 0;
4182 }
4183
4184 static int nl80211_set_station_tdls(struct genl_info *info,
4185                                     struct station_parameters *params)
4186 {
4187         int err;
4188         /* Dummy STA entry gets updated once the peer capabilities are known */
4189         if (info->attrs[NL80211_ATTR_PEER_AID])
4190                 params->aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
4191         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
4192                 params->ht_capa =
4193                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
4194         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
4195                 params->vht_capa =
4196                         nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
4197
4198         err = nl80211_parse_sta_channel_info(info, params);
4199         if (err)
4200                 return err;
4201
4202         return nl80211_parse_sta_wme(info, params);
4203 }
4204
4205 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
4206 {
4207         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4208         struct net_device *dev = info->user_ptr[1];
4209         struct station_parameters params;
4210         u8 *mac_addr;
4211         int err;
4212
4213         memset(&params, 0, sizeof(params));
4214
4215         params.listen_interval = -1;
4216
4217         if (!rdev->ops->change_station)
4218                 return -EOPNOTSUPP;
4219
4220         if (info->attrs[NL80211_ATTR_STA_AID])
4221                 return -EINVAL;
4222
4223         if (!info->attrs[NL80211_ATTR_MAC])
4224                 return -EINVAL;
4225
4226         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4227
4228         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
4229                 params.supported_rates =
4230                         nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4231                 params.supported_rates_len =
4232                         nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4233         }
4234
4235         if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
4236                 params.capability =
4237                         nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
4238                 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
4239         }
4240
4241         if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
4242                 params.ext_capab =
4243                         nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4244                 params.ext_capab_len =
4245                         nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4246         }
4247
4248         if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
4249                 return -EINVAL;
4250
4251         if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
4252                 return -EINVAL;
4253
4254         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
4255                 params.plink_action =
4256                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
4257                 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
4258                         return -EINVAL;
4259         }
4260
4261         if (info->attrs[NL80211_ATTR_STA_PLINK_STATE]) {
4262                 params.plink_state =
4263                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
4264                 if (params.plink_state >= NUM_NL80211_PLINK_STATES)
4265                         return -EINVAL;
4266                 params.sta_modify_mask |= STATION_PARAM_APPLY_PLINK_STATE;
4267         }
4268
4269         if (info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]) {
4270                 enum nl80211_mesh_power_mode pm = nla_get_u32(
4271                         info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]);
4272
4273                 if (pm <= NL80211_MESH_POWER_UNKNOWN ||
4274                     pm > NL80211_MESH_POWER_MAX)
4275                         return -EINVAL;
4276
4277                 params.local_pm = pm;
4278         }
4279
4280         /* Include parameters for TDLS peer (will check later) */
4281         err = nl80211_set_station_tdls(info, &params);
4282         if (err)
4283                 return err;
4284
4285         params.vlan = get_vlan(info, rdev);
4286         if (IS_ERR(params.vlan))
4287                 return PTR_ERR(params.vlan);
4288
4289         switch (dev->ieee80211_ptr->iftype) {
4290         case NL80211_IFTYPE_AP:
4291         case NL80211_IFTYPE_AP_VLAN:
4292         case NL80211_IFTYPE_P2P_GO:
4293         case NL80211_IFTYPE_P2P_CLIENT:
4294         case NL80211_IFTYPE_STATION:
4295         case NL80211_IFTYPE_ADHOC:
4296         case NL80211_IFTYPE_MESH_POINT:
4297                 break;
4298         default:
4299                 err = -EOPNOTSUPP;
4300                 goto out_put_vlan;
4301         }
4302
4303         /* driver will call cfg80211_check_station_change() */
4304         err = rdev_change_station(rdev, dev, mac_addr, &params);
4305
4306  out_put_vlan:
4307         if (params.vlan)
4308                 dev_put(params.vlan);
4309
4310         return err;
4311 }
4312
4313 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
4314 {
4315         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4316         int err;
4317         struct net_device *dev = info->user_ptr[1];
4318         struct station_parameters params;
4319         u8 *mac_addr = NULL;
4320
4321         memset(&params, 0, sizeof(params));
4322
4323         if (!rdev->ops->add_station)
4324                 return -EOPNOTSUPP;
4325
4326         if (!info->attrs[NL80211_ATTR_MAC])
4327                 return -EINVAL;
4328
4329         if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
4330                 return -EINVAL;
4331
4332         if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
4333                 return -EINVAL;
4334
4335         if (!info->attrs[NL80211_ATTR_STA_AID] &&
4336             !info->attrs[NL80211_ATTR_PEER_AID])
4337                 return -EINVAL;
4338
4339         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4340         params.supported_rates =
4341                 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4342         params.supported_rates_len =
4343                 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4344         params.listen_interval =
4345                 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
4346
4347         if (info->attrs[NL80211_ATTR_PEER_AID])
4348                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
4349         else
4350                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
4351         if (!params.aid || params.aid > IEEE80211_MAX_AID)
4352                 return -EINVAL;
4353
4354         if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
4355                 params.capability =
4356                         nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
4357                 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
4358         }
4359
4360         if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
4361                 params.ext_capab =
4362                         nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4363                 params.ext_capab_len =
4364                         nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4365         }
4366
4367         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
4368                 params.ht_capa =
4369                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
4370
4371         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
4372                 params.vht_capa =
4373                         nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
4374
4375         if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
4376                 params.opmode_notif_used = true;
4377                 params.opmode_notif =
4378                         nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
4379         }
4380
4381         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
4382                 params.plink_action =
4383                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
4384                 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
4385                         return -EINVAL;
4386         }
4387
4388         err = nl80211_parse_sta_channel_info(info, &params);
4389         if (err)
4390                 return err;
4391
4392         err = nl80211_parse_sta_wme(info, &params);
4393         if (err)
4394                 return err;
4395
4396         if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
4397                 return -EINVAL;
4398
4399         /* When you run into this, adjust the code below for the new flag */
4400         BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
4401
4402         switch (dev->ieee80211_ptr->iftype) {
4403         case NL80211_IFTYPE_AP:
4404         case NL80211_IFTYPE_AP_VLAN:
4405         case NL80211_IFTYPE_P2P_GO:
4406                 /* ignore WME attributes if iface/sta is not capable */
4407                 if (!(rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) ||
4408                     !(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)))
4409                         params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4410
4411                 /* TDLS peers cannot be added */
4412                 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
4413                     info->attrs[NL80211_ATTR_PEER_AID])
4414                         return -EINVAL;
4415                 /* but don't bother the driver with it */
4416                 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
4417
4418                 /* allow authenticated/associated only if driver handles it */
4419                 if (!(rdev->wiphy.features &
4420                                 NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
4421                     params.sta_flags_mask &
4422                                 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4423                                  BIT(NL80211_STA_FLAG_ASSOCIATED)))
4424                         return -EINVAL;
4425
4426                 /* must be last in here for error handling */
4427                 params.vlan = get_vlan(info, rdev);
4428                 if (IS_ERR(params.vlan))
4429                         return PTR_ERR(params.vlan);
4430                 break;
4431         case NL80211_IFTYPE_MESH_POINT:
4432                 /* ignore uAPSD data */
4433                 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4434
4435                 /* associated is disallowed */
4436                 if (params.sta_flags_mask & BIT(NL80211_STA_FLAG_ASSOCIATED))
4437                         return -EINVAL;
4438                 /* TDLS peers cannot be added */
4439                 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
4440                     info->attrs[NL80211_ATTR_PEER_AID])
4441                         return -EINVAL;
4442                 break;
4443         case NL80211_IFTYPE_STATION:
4444         case NL80211_IFTYPE_P2P_CLIENT:
4445                 /* ignore uAPSD data */
4446                 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4447
4448                 /* these are disallowed */
4449                 if (params.sta_flags_mask &
4450                                 (BIT(NL80211_STA_FLAG_ASSOCIATED) |
4451                                  BIT(NL80211_STA_FLAG_AUTHENTICATED)))
4452                         return -EINVAL;
4453                 /* Only TDLS peers can be added */
4454                 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
4455                         return -EINVAL;
4456                 /* Can only add if TDLS ... */
4457                 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS))
4458                         return -EOPNOTSUPP;
4459                 /* ... with external setup is supported */
4460                 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP))
4461                         return -EOPNOTSUPP;
4462                 /*
4463                  * Older wpa_supplicant versions always mark the TDLS peer
4464                  * as authorized, but it shouldn't yet be.
4465                  */
4466                 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_AUTHORIZED);
4467                 break;
4468         default:
4469                 return -EOPNOTSUPP;
4470         }
4471
4472         /* be aware of params.vlan when changing code here */
4473
4474         err = rdev_add_station(rdev, dev, mac_addr, &params);
4475
4476         if (params.vlan)
4477                 dev_put(params.vlan);
4478         return err;
4479 }
4480
4481 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
4482 {
4483         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4484         struct net_device *dev = info->user_ptr[1];
4485         struct station_del_parameters params;
4486
4487         memset(&params, 0, sizeof(params));
4488
4489         if (info->attrs[NL80211_ATTR_MAC])
4490                 params.mac = nla_data(info->attrs[NL80211_ATTR_MAC]);
4491
4492         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4493             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
4494             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
4495             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4496                 return -EINVAL;
4497
4498         if (!rdev->ops->del_station)
4499                 return -EOPNOTSUPP;
4500
4501         if (info->attrs[NL80211_ATTR_MGMT_SUBTYPE]) {
4502                 params.subtype =
4503                         nla_get_u8(info->attrs[NL80211_ATTR_MGMT_SUBTYPE]);
4504                 if (params.subtype != IEEE80211_STYPE_DISASSOC >> 4 &&
4505                     params.subtype != IEEE80211_STYPE_DEAUTH >> 4)
4506                         return -EINVAL;
4507         } else {
4508                 /* Default to Deauthentication frame */
4509                 params.subtype = IEEE80211_STYPE_DEAUTH >> 4;
4510         }
4511
4512         if (info->attrs[NL80211_ATTR_REASON_CODE]) {
4513                 params.reason_code =
4514                         nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
4515                 if (params.reason_code == 0)
4516                         return -EINVAL; /* 0 is reserved */
4517         } else {
4518                 /* Default to reason code 2 */
4519                 params.reason_code = WLAN_REASON_PREV_AUTH_NOT_VALID;
4520         }
4521
4522         return rdev_del_station(rdev, dev, &params);
4523 }
4524
4525 static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq,
4526                                 int flags, struct net_device *dev,
4527                                 u8 *dst, u8 *next_hop,
4528                                 struct mpath_info *pinfo)
4529 {
4530         void *hdr;
4531         struct nlattr *pinfoattr;
4532
4533         hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_MPATH);
4534         if (!hdr)
4535                 return -1;
4536
4537         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
4538             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
4539             nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) ||
4540             nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation))
4541                 goto nla_put_failure;
4542
4543         pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO);
4544         if (!pinfoattr)
4545                 goto nla_put_failure;
4546         if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) &&
4547             nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
4548                         pinfo->frame_qlen))
4549                 goto nla_put_failure;
4550         if (((pinfo->filled & MPATH_INFO_SN) &&
4551              nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) ||
4552             ((pinfo->filled & MPATH_INFO_METRIC) &&
4553              nla_put_u32(msg, NL80211_MPATH_INFO_METRIC,
4554                          pinfo->metric)) ||
4555             ((pinfo->filled & MPATH_INFO_EXPTIME) &&
4556              nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME,
4557                          pinfo->exptime)) ||
4558             ((pinfo->filled & MPATH_INFO_FLAGS) &&
4559              nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS,
4560                         pinfo->flags)) ||
4561             ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) &&
4562              nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
4563                          pinfo->discovery_timeout)) ||
4564             ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) &&
4565              nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
4566                         pinfo->discovery_retries)))
4567                 goto nla_put_failure;
4568
4569         nla_nest_end(msg, pinfoattr);
4570
4571         return genlmsg_end(msg, hdr);
4572
4573  nla_put_failure:
4574         genlmsg_cancel(msg, hdr);
4575         return -EMSGSIZE;
4576 }
4577
4578 static int nl80211_dump_mpath(struct sk_buff *skb,
4579                               struct netlink_callback *cb)
4580 {
4581         struct mpath_info pinfo;
4582         struct cfg80211_registered_device *rdev;
4583         struct wireless_dev *wdev;
4584         u8 dst[ETH_ALEN];
4585         u8 next_hop[ETH_ALEN];
4586         int path_idx = cb->args[2];
4587         int err;
4588
4589         err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
4590         if (err)
4591                 return err;
4592
4593         if (!rdev->ops->dump_mpath) {
4594                 err = -EOPNOTSUPP;
4595                 goto out_err;
4596         }
4597
4598         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
4599                 err = -EOPNOTSUPP;
4600                 goto out_err;
4601         }
4602
4603         while (1) {
4604                 err = rdev_dump_mpath(rdev, wdev->netdev, path_idx, dst,
4605                                       next_hop, &pinfo);
4606                 if (err == -ENOENT)
4607                         break;
4608                 if (err)
4609                         goto out_err;
4610
4611                 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
4612                                        cb->nlh->nlmsg_seq, NLM_F_MULTI,
4613                                        wdev->netdev, dst, next_hop,
4614                                        &pinfo) < 0)
4615                         goto out;
4616
4617                 path_idx++;
4618         }
4619
4620
4621  out:
4622         cb->args[2] = path_idx;
4623         err = skb->len;
4624  out_err:
4625         nl80211_finish_wdev_dump(rdev);
4626         return err;
4627 }
4628
4629 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
4630 {
4631         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4632         int err;
4633         struct net_device *dev = info->user_ptr[1];
4634         struct mpath_info pinfo;
4635         struct sk_buff *msg;
4636         u8 *dst = NULL;
4637         u8 next_hop[ETH_ALEN];
4638
4639         memset(&pinfo, 0, sizeof(pinfo));
4640
4641         if (!info->attrs[NL80211_ATTR_MAC])
4642                 return -EINVAL;
4643
4644         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4645
4646         if (!rdev->ops->get_mpath)
4647                 return -EOPNOTSUPP;
4648
4649         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4650                 return -EOPNOTSUPP;
4651
4652         err = rdev_get_mpath(rdev, dev, dst, next_hop, &pinfo);
4653         if (err)
4654                 return err;
4655
4656         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4657         if (!msg)
4658                 return -ENOMEM;
4659
4660         if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
4661                                  dev, dst, next_hop, &pinfo) < 0) {
4662                 nlmsg_free(msg);
4663                 return -ENOBUFS;
4664         }
4665
4666         return genlmsg_reply(msg, info);
4667 }
4668
4669 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
4670 {
4671         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4672         struct net_device *dev = info->user_ptr[1];
4673         u8 *dst = NULL;
4674         u8 *next_hop = NULL;
4675
4676         if (!info->attrs[NL80211_ATTR_MAC])
4677                 return -EINVAL;
4678
4679         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
4680                 return -EINVAL;
4681
4682         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4683         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
4684
4685         if (!rdev->ops->change_mpath)
4686                 return -EOPNOTSUPP;
4687
4688         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4689                 return -EOPNOTSUPP;
4690
4691         return rdev_change_mpath(rdev, dev, dst, next_hop);
4692 }
4693
4694 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
4695 {
4696         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4697         struct net_device *dev = info->user_ptr[1];
4698         u8 *dst = NULL;
4699         u8 *next_hop = NULL;
4700
4701         if (!info->attrs[NL80211_ATTR_MAC])
4702                 return -EINVAL;
4703
4704         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
4705                 return -EINVAL;
4706
4707         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4708         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
4709
4710         if (!rdev->ops->add_mpath)
4711                 return -EOPNOTSUPP;
4712
4713         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4714                 return -EOPNOTSUPP;
4715
4716         return rdev_add_mpath(rdev, dev, dst, next_hop);
4717 }
4718
4719 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
4720 {
4721         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4722         struct net_device *dev = info->user_ptr[1];
4723         u8 *dst = NULL;
4724
4725         if (info->attrs[NL80211_ATTR_MAC])
4726                 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4727
4728         if (!rdev->ops->del_mpath)
4729                 return -EOPNOTSUPP;
4730
4731         return rdev_del_mpath(rdev, dev, dst);
4732 }
4733
4734 static int nl80211_get_mpp(struct sk_buff *skb, struct genl_info *info)
4735 {
4736         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4737         int err;
4738         struct net_device *dev = info->user_ptr[1];
4739         struct mpath_info pinfo;
4740         struct sk_buff *msg;
4741         u8 *dst = NULL;
4742         u8 mpp[ETH_ALEN];
4743
4744         memset(&pinfo, 0, sizeof(pinfo));
4745
4746         if (!info->attrs[NL80211_ATTR_MAC])
4747                 return -EINVAL;
4748
4749         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4750
4751         if (!rdev->ops->get_mpp)
4752                 return -EOPNOTSUPP;
4753
4754         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4755                 return -EOPNOTSUPP;
4756
4757         err = rdev_get_mpp(rdev, dev, dst, mpp, &pinfo);
4758         if (err)
4759                 return err;
4760
4761         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4762         if (!msg)
4763                 return -ENOMEM;
4764
4765         if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
4766                                dev, dst, mpp, &pinfo) < 0) {
4767                 nlmsg_free(msg);
4768                 return -ENOBUFS;
4769         }
4770
4771         return genlmsg_reply(msg, info);
4772 }
4773
4774 static int nl80211_dump_mpp(struct sk_buff *skb,
4775                             struct netlink_callback *cb)
4776 {
4777         struct mpath_info pinfo;
4778         struct cfg80211_registered_device *rdev;
4779         struct wireless_dev *wdev;
4780         u8 dst[ETH_ALEN];
4781         u8 mpp[ETH_ALEN];
4782         int path_idx = cb->args[2];
4783         int err;
4784
4785         err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
4786         if (err)
4787                 return err;
4788
4789         if (!rdev->ops->dump_mpp) {
4790                 err = -EOPNOTSUPP;
4791                 goto out_err;
4792         }
4793
4794         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
4795                 err = -EOPNOTSUPP;
4796                 goto out_err;
4797         }
4798
4799         while (1) {
4800                 err = rdev_dump_mpp(rdev, wdev->netdev, path_idx, dst,
4801                                     mpp, &pinfo);
4802                 if (err == -ENOENT)
4803                         break;
4804                 if (err)
4805                         goto out_err;
4806
4807                 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
4808                                        cb->nlh->nlmsg_seq, NLM_F_MULTI,
4809                                        wdev->netdev, dst, mpp,
4810                                        &pinfo) < 0)
4811                         goto out;
4812
4813                 path_idx++;
4814         }
4815
4816  out:
4817         cb->args[2] = path_idx;
4818         err = skb->len;
4819  out_err:
4820         nl80211_finish_wdev_dump(rdev);
4821         return err;
4822 }
4823
4824 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
4825 {
4826         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4827         struct net_device *dev = info->user_ptr[1];
4828         struct wireless_dev *wdev = dev->ieee80211_ptr;
4829         struct bss_parameters params;
4830         int err;
4831
4832         memset(&params, 0, sizeof(params));
4833         /* default to not changing parameters */
4834         params.use_cts_prot = -1;
4835         params.use_short_preamble = -1;
4836         params.use_short_slot_time = -1;
4837         params.ap_isolate = -1;
4838         params.ht_opmode = -1;
4839         params.p2p_ctwindow = -1;
4840         params.p2p_opp_ps = -1;
4841
4842         if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
4843                 params.use_cts_prot =
4844                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
4845         if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
4846                 params.use_short_preamble =
4847                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
4848         if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
4849                 params.use_short_slot_time =
4850                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
4851         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
4852                 params.basic_rates =
4853                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4854                 params.basic_rates_len =
4855                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4856         }
4857         if (info->attrs[NL80211_ATTR_AP_ISOLATE])
4858                 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
4859         if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
4860                 params.ht_opmode =
4861                         nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
4862
4863         if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
4864                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4865                         return -EINVAL;
4866                 params.p2p_ctwindow =
4867                         nla_get_s8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
4868                 if (params.p2p_ctwindow < 0)
4869                         return -EINVAL;
4870                 if (params.p2p_ctwindow != 0 &&
4871                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
4872                         return -EINVAL;
4873         }
4874
4875         if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
4876                 u8 tmp;
4877
4878                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4879                         return -EINVAL;
4880                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
4881                 if (tmp > 1)
4882                         return -EINVAL;
4883                 params.p2p_opp_ps = tmp;
4884                 if (params.p2p_opp_ps &&
4885                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
4886                         return -EINVAL;
4887         }
4888
4889         if (!rdev->ops->change_bss)
4890                 return -EOPNOTSUPP;
4891
4892         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4893             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4894                 return -EOPNOTSUPP;
4895
4896         wdev_lock(wdev);
4897         err = rdev_change_bss(rdev, dev, &params);
4898         wdev_unlock(wdev);
4899
4900         return err;
4901 }
4902
4903 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
4904         [NL80211_ATTR_REG_RULE_FLAGS]           = { .type = NLA_U32 },
4905         [NL80211_ATTR_FREQ_RANGE_START]         = { .type = NLA_U32 },
4906         [NL80211_ATTR_FREQ_RANGE_END]           = { .type = NLA_U32 },
4907         [NL80211_ATTR_FREQ_RANGE_MAX_BW]        = { .type = NLA_U32 },
4908         [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]  = { .type = NLA_U32 },
4909         [NL80211_ATTR_POWER_RULE_MAX_EIRP]      = { .type = NLA_U32 },
4910         [NL80211_ATTR_DFS_CAC_TIME]             = { .type = NLA_U32 },
4911 };
4912
4913 static int parse_reg_rule(struct nlattr *tb[],
4914         struct ieee80211_reg_rule *reg_rule)
4915 {
4916         struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
4917         struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
4918
4919         if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
4920                 return -EINVAL;
4921         if (!tb[NL80211_ATTR_FREQ_RANGE_START])
4922                 return -EINVAL;
4923         if (!tb[NL80211_ATTR_FREQ_RANGE_END])
4924                 return -EINVAL;
4925         if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
4926                 return -EINVAL;
4927         if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
4928                 return -EINVAL;
4929
4930         reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
4931
4932         freq_range->start_freq_khz =
4933                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
4934         freq_range->end_freq_khz =
4935                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
4936         freq_range->max_bandwidth_khz =
4937                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
4938
4939         power_rule->max_eirp =
4940                 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
4941
4942         if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
4943                 power_rule->max_antenna_gain =
4944                         nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
4945
4946         if (tb[NL80211_ATTR_DFS_CAC_TIME])
4947                 reg_rule->dfs_cac_ms =
4948                         nla_get_u32(tb[NL80211_ATTR_DFS_CAC_TIME]);
4949
4950         return 0;
4951 }
4952
4953 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
4954 {
4955         char *data = NULL;
4956         enum nl80211_user_reg_hint_type user_reg_hint_type;
4957
4958         /*
4959          * You should only get this when cfg80211 hasn't yet initialized
4960          * completely when built-in to the kernel right between the time
4961          * window between nl80211_init() and regulatory_init(), if that is
4962          * even possible.
4963          */
4964         if (unlikely(!rcu_access_pointer(cfg80211_regdomain)))
4965                 return -EINPROGRESS;
4966
4967         if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE])
4968                 user_reg_hint_type =
4969                   nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]);
4970         else
4971                 user_reg_hint_type = NL80211_USER_REG_HINT_USER;
4972
4973         switch (user_reg_hint_type) {
4974         case NL80211_USER_REG_HINT_USER:
4975         case NL80211_USER_REG_HINT_CELL_BASE:
4976                 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
4977                         return -EINVAL;
4978
4979                 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
4980                 return regulatory_hint_user(data, user_reg_hint_type);
4981         case NL80211_USER_REG_HINT_INDOOR:
4982                 return regulatory_hint_indoor_user();
4983         default:
4984                 return -EINVAL;
4985         }
4986 }
4987
4988 static int nl80211_get_mesh_config(struct sk_buff *skb,
4989                                    struct genl_info *info)
4990 {
4991         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4992         struct net_device *dev = info->user_ptr[1];
4993         struct wireless_dev *wdev = dev->ieee80211_ptr;
4994         struct mesh_config cur_params;
4995         int err = 0;
4996         void *hdr;
4997         struct nlattr *pinfoattr;
4998         struct sk_buff *msg;
4999
5000         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
5001                 return -EOPNOTSUPP;
5002
5003         if (!rdev->ops->get_mesh_config)
5004                 return -EOPNOTSUPP;
5005
5006         wdev_lock(wdev);
5007         /* If not connected, get default parameters */
5008         if (!wdev->mesh_id_len)
5009                 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
5010         else
5011                 err = rdev_get_mesh_config(rdev, dev, &cur_params);
5012         wdev_unlock(wdev);
5013
5014         if (err)
5015                 return err;
5016
5017         /* Draw up a netlink message to send back */
5018         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5019         if (!msg)
5020                 return -ENOMEM;
5021         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
5022                              NL80211_CMD_GET_MESH_CONFIG);
5023         if (!hdr)
5024                 goto out;
5025         pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG);
5026         if (!pinfoattr)
5027                 goto nla_put_failure;
5028         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
5029             nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
5030                         cur_params.dot11MeshRetryTimeout) ||
5031             nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
5032                         cur_params.dot11MeshConfirmTimeout) ||
5033             nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
5034                         cur_params.dot11MeshHoldingTimeout) ||
5035             nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
5036                         cur_params.dot11MeshMaxPeerLinks) ||
5037             nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES,
5038                        cur_params.dot11MeshMaxRetries) ||
5039             nla_put_u8(msg, NL80211_MESHCONF_TTL,
5040                        cur_params.dot11MeshTTL) ||
5041             nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL,
5042                        cur_params.element_ttl) ||
5043             nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
5044                        cur_params.auto_open_plinks) ||
5045             nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
5046                         cur_params.dot11MeshNbrOffsetMaxNeighbor) ||
5047             nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
5048                        cur_params.dot11MeshHWMPmaxPREQretries) ||
5049             nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
5050                         cur_params.path_refresh_time) ||
5051             nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
5052                         cur_params.min_discovery_timeout) ||
5053             nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
5054                         cur_params.dot11MeshHWMPactivePathTimeout) ||
5055             nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
5056                         cur_params.dot11MeshHWMPpreqMinInterval) ||
5057             nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
5058                         cur_params.dot11MeshHWMPperrMinInterval) ||
5059             nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
5060                         cur_params.dot11MeshHWMPnetDiameterTraversalTime) ||
5061             nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
5062                        cur_params.dot11MeshHWMPRootMode) ||
5063             nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
5064                         cur_params.dot11MeshHWMPRannInterval) ||
5065             nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
5066                        cur_params.dot11MeshGateAnnouncementProtocol) ||
5067             nla_put_u8(msg, NL80211_MESHCONF_FORWARDING,
5068                        cur_params.dot11MeshForwarding) ||
5069             nla_put_u32(msg, NL80211_MESHCONF_RSSI_THRESHOLD,
5070                         cur_params.rssi_threshold) ||
5071             nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE,
5072                         cur_params.ht_opmode) ||
5073             nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
5074                         cur_params.dot11MeshHWMPactivePathToRootTimeout) ||
5075             nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
5076                         cur_params.dot11MeshHWMProotInterval) ||
5077             nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
5078                         cur_params.dot11MeshHWMPconfirmationInterval) ||
5079             nla_put_u32(msg, NL80211_MESHCONF_POWER_MODE,
5080                         cur_params.power_mode) ||
5081             nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW,
5082                         cur_params.dot11MeshAwakeWindowDuration) ||
5083             nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT,
5084                         cur_params.plink_timeout))
5085                 goto nla_put_failure;
5086         nla_nest_end(msg, pinfoattr);
5087         genlmsg_end(msg, hdr);
5088         return genlmsg_reply(msg, info);
5089
5090  nla_put_failure:
5091         genlmsg_cancel(msg, hdr);
5092  out:
5093         nlmsg_free(msg);
5094         return -ENOBUFS;
5095 }
5096
5097 static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
5098         [NL80211_MESHCONF_RETRY_TIMEOUT] = { .type = NLA_U16 },
5099         [NL80211_MESHCONF_CONFIRM_TIMEOUT] = { .type = NLA_U16 },
5100         [NL80211_MESHCONF_HOLDING_TIMEOUT] = { .type = NLA_U16 },
5101         [NL80211_MESHCONF_MAX_PEER_LINKS] = { .type = NLA_U16 },
5102         [NL80211_MESHCONF_MAX_RETRIES] = { .type = NLA_U8 },
5103         [NL80211_MESHCONF_TTL] = { .type = NLA_U8 },
5104         [NL80211_MESHCONF_ELEMENT_TTL] = { .type = NLA_U8 },
5105         [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = { .type = NLA_U8 },
5106         [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] = { .type = NLA_U32 },
5107         [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
5108         [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
5109         [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = { .type = NLA_U16 },
5110         [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
5111         [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 },
5112         [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] = { .type = NLA_U16 },
5113         [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 },
5114         [NL80211_MESHCONF_HWMP_ROOTMODE] = { .type = NLA_U8 },
5115         [NL80211_MESHCONF_HWMP_RANN_INTERVAL] = { .type = NLA_U16 },
5116         [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = { .type = NLA_U8 },
5117         [NL80211_MESHCONF_FORWARDING] = { .type = NLA_U8 },
5118         [NL80211_MESHCONF_RSSI_THRESHOLD] = { .type = NLA_U32 },
5119         [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 },
5120         [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 },
5121         [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] = { .type = NLA_U16 },
5122         [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] = { .type = NLA_U16 },
5123         [NL80211_MESHCONF_POWER_MODE] = { .type = NLA_U32 },
5124         [NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 },
5125         [NL80211_MESHCONF_PLINK_TIMEOUT] = { .type = NLA_U32 },
5126 };
5127
5128 static const struct nla_policy
5129         nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
5130         [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 },
5131         [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
5132         [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
5133         [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
5134         [NL80211_MESH_SETUP_AUTH_PROTOCOL] = { .type = NLA_U8 },
5135         [NL80211_MESH_SETUP_USERSPACE_MPM] = { .type = NLA_FLAG },
5136         [NL80211_MESH_SETUP_IE] = { .type = NLA_BINARY,
5137                                     .len = IEEE80211_MAX_DATA_LEN },
5138         [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
5139 };
5140
5141 static int nl80211_parse_mesh_config(struct genl_info *info,
5142                                      struct mesh_config *cfg,
5143                                      u32 *mask_out)
5144 {
5145         struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
5146         u32 mask = 0;
5147
5148 #define FILL_IN_MESH_PARAM_IF_SET(tb, cfg, param, min, max, mask, attr, fn) \
5149 do {                                                                        \
5150         if (tb[attr]) {                                                     \
5151                 if (fn(tb[attr]) < min || fn(tb[attr]) > max)               \
5152                         return -EINVAL;                                     \
5153                 cfg->param = fn(tb[attr]);                                  \
5154                 mask |= (1 << (attr - 1));                                  \
5155         }                                                                   \
5156 } while (0)
5157
5158
5159         if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
5160                 return -EINVAL;
5161         if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX,
5162                              info->attrs[NL80211_ATTR_MESH_CONFIG],
5163                              nl80211_meshconf_params_policy))
5164                 return -EINVAL;
5165
5166         /* This makes sure that there aren't more than 32 mesh config
5167          * parameters (otherwise our bitfield scheme would not work.) */
5168         BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
5169
5170         /* Fill in the params struct */
5171         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, 1, 255,
5172                                   mask, NL80211_MESHCONF_RETRY_TIMEOUT,
5173                                   nla_get_u16);
5174         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, 1, 255,
5175                                   mask, NL80211_MESHCONF_CONFIRM_TIMEOUT,
5176                                   nla_get_u16);
5177         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, 1, 255,
5178                                   mask, NL80211_MESHCONF_HOLDING_TIMEOUT,
5179                                   nla_get_u16);
5180         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, 0, 255,
5181                                   mask, NL80211_MESHCONF_MAX_PEER_LINKS,
5182                                   nla_get_u16);
5183         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, 0, 16,
5184                                   mask, NL80211_MESHCONF_MAX_RETRIES,
5185                                   nla_get_u8);
5186         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, 1, 255,
5187                                   mask, NL80211_MESHCONF_TTL, nla_get_u8);
5188         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl, 1, 255,
5189                                   mask, NL80211_MESHCONF_ELEMENT_TTL,
5190                                   nla_get_u8);
5191         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, 0, 1,
5192                                   mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
5193                                   nla_get_u8);
5194         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor,
5195                                   1, 255, mask,
5196                                   NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
5197                                   nla_get_u32);
5198         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, 0, 255,
5199                                   mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
5200                                   nla_get_u8);
5201         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, 1, 65535,
5202                                   mask, NL80211_MESHCONF_PATH_REFRESH_TIME,
5203                                   nla_get_u32);
5204         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, 1, 65535,
5205                                   mask, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
5206                                   nla_get_u16);
5207         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
5208                                   1, 65535, mask,
5209                                   NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
5210                                   nla_get_u32);
5211         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval,
5212                                   1, 65535, mask,
5213                                   NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
5214                                   nla_get_u16);
5215         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval,
5216                                   1, 65535, mask,
5217                                   NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
5218                                   nla_get_u16);
5219         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
5220                                   dot11MeshHWMPnetDiameterTraversalTime,
5221                                   1, 65535, mask,
5222                                   NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
5223                                   nla_get_u16);
5224         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, 0, 4,
5225                                   mask, NL80211_MESHCONF_HWMP_ROOTMODE,
5226                                   nla_get_u8);
5227         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, 1, 65535,
5228                                   mask, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
5229                                   nla_get_u16);
5230         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
5231                                   dot11MeshGateAnnouncementProtocol, 0, 1,
5232                                   mask, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
5233                                   nla_get_u8);
5234         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding, 0, 1,
5235                                   mask, NL80211_MESHCONF_FORWARDING,
5236                                   nla_get_u8);
5237         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold, -255, 0,
5238                                   mask, NL80211_MESHCONF_RSSI_THRESHOLD,
5239                                   nla_get_s32);
5240         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, ht_opmode, 0, 16,
5241                                   mask, NL80211_MESHCONF_HT_OPMODE,
5242                                   nla_get_u16);
5243         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathToRootTimeout,
5244                                   1, 65535, mask,
5245                                   NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
5246                                   nla_get_u32);
5247         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval, 1, 65535,
5248                                   mask, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
5249                                   nla_get_u16);
5250         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
5251                                   dot11MeshHWMPconfirmationInterval,
5252                                   1, 65535, mask,
5253                                   NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
5254                                   nla_get_u16);
5255         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, power_mode,
5256                                   NL80211_MESH_POWER_ACTIVE,
5257                                   NL80211_MESH_POWER_MAX,
5258                                   mask, NL80211_MESHCONF_POWER_MODE,
5259                                   nla_get_u32);
5260         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration,
5261                                   0, 65535, mask,
5262                                   NL80211_MESHCONF_AWAKE_WINDOW, nla_get_u16);
5263         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, plink_timeout, 1, 0xffffffff,
5264                                   mask, NL80211_MESHCONF_PLINK_TIMEOUT,
5265                                   nla_get_u32);
5266         if (mask_out)
5267                 *mask_out = mask;
5268
5269         return 0;
5270
5271 #undef FILL_IN_MESH_PARAM_IF_SET
5272 }
5273
5274 static int nl80211_parse_mesh_setup(struct genl_info *info,
5275                                      struct mesh_setup *setup)
5276 {
5277         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5278         struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
5279
5280         if (!info->attrs[NL80211_ATTR_MESH_SETUP])
5281                 return -EINVAL;
5282         if (nla_parse_nested(tb, NL80211_MESH_SETUP_ATTR_MAX,
5283                              info->attrs[NL80211_ATTR_MESH_SETUP],
5284                              nl80211_mesh_setup_params_policy))
5285                 return -EINVAL;
5286
5287         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])
5288                 setup->sync_method =
5289                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ?
5290                  IEEE80211_SYNC_METHOD_VENDOR :
5291                  IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET;
5292
5293         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
5294                 setup->path_sel_proto =
5295                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
5296                  IEEE80211_PATH_PROTOCOL_VENDOR :
5297                  IEEE80211_PATH_PROTOCOL_HWMP;
5298
5299         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
5300                 setup->path_metric =
5301                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
5302                  IEEE80211_PATH_METRIC_VENDOR :
5303                  IEEE80211_PATH_METRIC_AIRTIME;
5304
5305
5306         if (tb[NL80211_MESH_SETUP_IE]) {
5307                 struct nlattr *ieattr =
5308                         tb[NL80211_MESH_SETUP_IE];
5309                 if (!is_valid_ie_attr(ieattr))
5310                         return -EINVAL;
5311                 setup->ie = nla_data(ieattr);
5312                 setup->ie_len = nla_len(ieattr);
5313         }
5314         if (tb[NL80211_MESH_SETUP_USERSPACE_MPM] &&
5315             !(rdev->wiphy.features & NL80211_FEATURE_USERSPACE_MPM))
5316                 return -EINVAL;
5317         setup->user_mpm = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_MPM]);
5318         setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
5319         setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
5320         if (setup->is_secure)
5321                 setup->user_mpm = true;
5322
5323         if (tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]) {
5324                 if (!setup->user_mpm)
5325                         return -EINVAL;
5326                 setup->auth_id =
5327                         nla_get_u8(tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]);
5328         }
5329
5330         return 0;
5331 }
5332
5333 static int nl80211_update_mesh_config(struct sk_buff *skb,
5334                                       struct genl_info *info)
5335 {
5336         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5337         struct net_device *dev = info->user_ptr[1];
5338         struct wireless_dev *wdev = dev->ieee80211_ptr;
5339         struct mesh_config cfg;
5340         u32 mask;
5341         int err;
5342
5343         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
5344                 return -EOPNOTSUPP;
5345
5346         if (!rdev->ops->update_mesh_config)
5347                 return -EOPNOTSUPP;
5348
5349         err = nl80211_parse_mesh_config(info, &cfg, &mask);
5350         if (err)
5351                 return err;
5352
5353         wdev_lock(wdev);
5354         if (!wdev->mesh_id_len)
5355                 err = -ENOLINK;
5356
5357         if (!err)
5358                 err = rdev_update_mesh_config(rdev, dev, mask, &cfg);
5359
5360         wdev_unlock(wdev);
5361
5362         return err;
5363 }
5364
5365 static int nl80211_put_regdom(const struct ieee80211_regdomain *regdom,
5366                               struct sk_buff *msg)
5367 {
5368         struct nlattr *nl_reg_rules;
5369         unsigned int i;
5370
5371         if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, regdom->alpha2) ||
5372             (regdom->dfs_region &&
5373              nla_put_u8(msg, NL80211_ATTR_DFS_REGION, regdom->dfs_region)))
5374                 goto nla_put_failure;
5375
5376         nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES);
5377         if (!nl_reg_rules)
5378                 goto nla_put_failure;
5379
5380         for (i = 0; i < regdom->n_reg_rules; i++) {
5381                 struct nlattr *nl_reg_rule;
5382                 const struct ieee80211_reg_rule *reg_rule;
5383                 const struct ieee80211_freq_range *freq_range;
5384                 const struct ieee80211_power_rule *power_rule;
5385                 unsigned int max_bandwidth_khz;
5386
5387                 reg_rule = &regdom->reg_rules[i];
5388                 freq_range = &reg_rule->freq_range;
5389                 power_rule = &reg_rule->power_rule;
5390
5391                 nl_reg_rule = nla_nest_start(msg, i);
5392                 if (!nl_reg_rule)
5393                         goto nla_put_failure;
5394
5395                 max_bandwidth_khz = freq_range->max_bandwidth_khz;
5396                 if (!max_bandwidth_khz)
5397                         max_bandwidth_khz = reg_get_max_bandwidth(regdom,
5398                                                                   reg_rule);
5399
5400                 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS,
5401                                 reg_rule->flags) ||
5402                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START,
5403                                 freq_range->start_freq_khz) ||
5404                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END,
5405                                 freq_range->end_freq_khz) ||
5406                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
5407                                 max_bandwidth_khz) ||
5408                     nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
5409                                 power_rule->max_antenna_gain) ||
5410                     nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
5411                                 power_rule->max_eirp) ||
5412                     nla_put_u32(msg, NL80211_ATTR_DFS_CAC_TIME,
5413                                 reg_rule->dfs_cac_ms))
5414                         goto nla_put_failure;
5415
5416                 nla_nest_end(msg, nl_reg_rule);
5417         }
5418
5419         nla_nest_end(msg, nl_reg_rules);
5420         return 0;
5421
5422 nla_put_failure:
5423         return -EMSGSIZE;
5424 }
5425
5426 static int nl80211_get_reg_do(struct sk_buff *skb, struct genl_info *info)
5427 {
5428         const struct ieee80211_regdomain *regdom = NULL;
5429         struct cfg80211_registered_device *rdev;
5430         struct wiphy *wiphy = NULL;
5431         struct sk_buff *msg;
5432         void *hdr;
5433
5434         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5435         if (!msg)
5436                 return -ENOBUFS;
5437
5438         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
5439                              NL80211_CMD_GET_REG);
5440         if (!hdr)
5441                 goto put_failure;
5442
5443         if (info->attrs[NL80211_ATTR_WIPHY]) {
5444                 bool self_managed;
5445
5446                 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
5447                 if (IS_ERR(rdev)) {
5448                         nlmsg_free(msg);
5449                         return PTR_ERR(rdev);
5450                 }
5451
5452                 wiphy = &rdev->wiphy;
5453                 self_managed = wiphy->regulatory_flags &
5454                                REGULATORY_WIPHY_SELF_MANAGED;
5455                 regdom = get_wiphy_regdom(wiphy);
5456
5457                 /* a self-managed-reg device must have a private regdom */
5458                 if (WARN_ON(!regdom && self_managed)) {
5459                         nlmsg_free(msg);
5460                         return -EINVAL;
5461                 }
5462
5463                 if (regdom &&
5464                     nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
5465                         goto nla_put_failure;
5466         }
5467
5468         if (!wiphy && reg_last_request_cell_base() &&
5469             nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
5470                         NL80211_USER_REG_HINT_CELL_BASE))
5471                 goto nla_put_failure;
5472
5473         rcu_read_lock();
5474
5475         if (!regdom)
5476                 regdom = rcu_dereference(cfg80211_regdomain);
5477
5478         if (nl80211_put_regdom(regdom, msg))
5479                 goto nla_put_failure_rcu;
5480
5481         rcu_read_unlock();
5482
5483         genlmsg_end(msg, hdr);
5484         return genlmsg_reply(msg, info);
5485
5486 nla_put_failure_rcu:
5487         rcu_read_unlock();
5488 nla_put_failure:
5489         genlmsg_cancel(msg, hdr);
5490 put_failure:
5491         nlmsg_free(msg);
5492         return -EMSGSIZE;
5493 }
5494
5495 static int nl80211_send_regdom(struct sk_buff *msg, struct netlink_callback *cb,
5496                                u32 seq, int flags, struct wiphy *wiphy,
5497                                const struct ieee80211_regdomain *regdom)
5498 {
5499         void *hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
5500                                    NL80211_CMD_GET_REG);
5501
5502         if (!hdr)
5503                 return -1;
5504
5505         genl_dump_check_consistent(cb, hdr, &nl80211_fam);
5506
5507         if (nl80211_put_regdom(regdom, msg))
5508                 goto nla_put_failure;
5509
5510         if (!wiphy && reg_last_request_cell_base() &&
5511             nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
5512                         NL80211_USER_REG_HINT_CELL_BASE))
5513                 goto nla_put_failure;
5514
5515         if (wiphy &&
5516             nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
5517                 goto nla_put_failure;
5518
5519         if (wiphy && wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
5520             nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
5521                 goto nla_put_failure;
5522
5523         return genlmsg_end(msg, hdr);
5524
5525 nla_put_failure:
5526         genlmsg_cancel(msg, hdr);
5527         return -EMSGSIZE;
5528 }
5529
5530 static int nl80211_get_reg_dump(struct sk_buff *skb,
5531                                 struct netlink_callback *cb)
5532 {
5533         const struct ieee80211_regdomain *regdom = NULL;
5534         struct cfg80211_registered_device *rdev;
5535         int err, reg_idx, start = cb->args[2];
5536
5537         rtnl_lock();
5538
5539         if (cfg80211_regdomain && start == 0) {
5540                 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
5541                                           NLM_F_MULTI, NULL,
5542                                           rtnl_dereference(cfg80211_regdomain));
5543                 if (err < 0)
5544                         goto out_err;
5545         }
5546
5547         /* the global regdom is idx 0 */
5548         reg_idx = 1;
5549         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
5550                 regdom = get_wiphy_regdom(&rdev->wiphy);
5551                 if (!regdom)
5552                         continue;
5553
5554                 if (++reg_idx <= start)
5555                         continue;
5556
5557                 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
5558                                           NLM_F_MULTI, &rdev->wiphy, regdom);
5559                 if (err < 0) {
5560                         reg_idx--;
5561                         break;
5562                 }
5563         }
5564
5565         cb->args[2] = reg_idx;
5566         err = skb->len;
5567 out_err:
5568         rtnl_unlock();
5569         return err;
5570 }
5571
5572 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
5573 {
5574         struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
5575         struct nlattr *nl_reg_rule;
5576         char *alpha2;
5577         int rem_reg_rules, r;
5578         u32 num_rules = 0, rule_idx = 0, size_of_regd;
5579         enum nl80211_dfs_regions dfs_region = NL80211_DFS_UNSET;
5580         struct ieee80211_regdomain *rd;
5581
5582         if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
5583                 return -EINVAL;
5584
5585         if (!info->attrs[NL80211_ATTR_REG_RULES])
5586                 return -EINVAL;
5587
5588         alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
5589
5590         if (info->attrs[NL80211_ATTR_DFS_REGION])
5591                 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]);
5592
5593         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
5594                             rem_reg_rules) {
5595                 num_rules++;
5596                 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
5597                         return -EINVAL;
5598         }
5599
5600         if (!reg_is_valid_request(alpha2))
5601                 return -EINVAL;
5602
5603         size_of_regd = sizeof(struct ieee80211_regdomain) +
5604                        num_rules * sizeof(struct ieee80211_reg_rule);
5605
5606         rd = kzalloc(size_of_regd, GFP_KERNEL);
5607         if (!rd)
5608                 return -ENOMEM;
5609
5610         rd->n_reg_rules = num_rules;
5611         rd->alpha2[0] = alpha2[0];
5612         rd->alpha2[1] = alpha2[1];
5613
5614         /*
5615          * Disable DFS master mode if the DFS region was
5616          * not supported or known on this kernel.
5617          */
5618         if (reg_supported_dfs_region(dfs_region))
5619                 rd->dfs_region = dfs_region;
5620
5621         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
5622                             rem_reg_rules) {
5623                 r = nla_parse(tb, NL80211_REG_RULE_ATTR_MAX,
5624                               nla_data(nl_reg_rule), nla_len(nl_reg_rule),
5625                               reg_rule_policy);
5626                 if (r)
5627                         goto bad_reg;
5628                 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
5629                 if (r)
5630                         goto bad_reg;
5631
5632                 rule_idx++;
5633
5634                 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
5635                         r = -EINVAL;
5636                         goto bad_reg;
5637                 }
5638         }
5639
5640         r = set_regdom(rd);
5641         /* set_regdom took ownership */
5642         rd = NULL;
5643
5644  bad_reg:
5645         kfree(rd);
5646         return r;
5647 }
5648
5649 static int validate_scan_freqs(struct nlattr *freqs)
5650 {
5651         struct nlattr *attr1, *attr2;
5652         int n_channels = 0, tmp1, tmp2;
5653
5654         nla_for_each_nested(attr1, freqs, tmp1) {
5655                 n_channels++;
5656                 /*
5657                  * Some hardware has a limited channel list for
5658                  * scanning, and it is pretty much nonsensical
5659                  * to scan for a channel twice, so disallow that
5660                  * and don't require drivers to check that the
5661                  * channel list they get isn't longer than what
5662                  * they can scan, as long as they can scan all
5663                  * the channels they registered at once.
5664                  */
5665                 nla_for_each_nested(attr2, freqs, tmp2)
5666                         if (attr1 != attr2 &&
5667                             nla_get_u32(attr1) == nla_get_u32(attr2))
5668                                 return 0;
5669         }
5670
5671         return n_channels;
5672 }
5673
5674 static int nl80211_parse_random_mac(struct nlattr **attrs,
5675                                     u8 *mac_addr, u8 *mac_addr_mask)
5676 {
5677         int i;
5678
5679         if (!attrs[NL80211_ATTR_MAC] && !attrs[NL80211_ATTR_MAC_MASK]) {
5680                 memset(mac_addr, 0, ETH_ALEN);
5681                 memset(mac_addr_mask, 0, ETH_ALEN);
5682                 mac_addr[0] = 0x2;
5683                 mac_addr_mask[0] = 0x3;
5684
5685                 return 0;
5686         }
5687
5688         /* need both or none */
5689         if (!attrs[NL80211_ATTR_MAC] || !attrs[NL80211_ATTR_MAC_MASK])
5690                 return -EINVAL;
5691
5692         memcpy(mac_addr, nla_data(attrs[NL80211_ATTR_MAC]), ETH_ALEN);
5693         memcpy(mac_addr_mask, nla_data(attrs[NL80211_ATTR_MAC_MASK]), ETH_ALEN);
5694
5695         /* don't allow or configure an mcast address */
5696         if (!is_multicast_ether_addr(mac_addr_mask) ||
5697             is_multicast_ether_addr(mac_addr))
5698                 return -EINVAL;
5699
5700         /*
5701          * allow users to pass a MAC address that has bits set outside
5702          * of the mask, but don't bother drivers with having to deal
5703          * with such bits
5704          */
5705         for (i = 0; i < ETH_ALEN; i++)
5706                 mac_addr[i] &= mac_addr_mask[i];
5707
5708         return 0;
5709 }
5710
5711 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
5712 {
5713         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5714         struct wireless_dev *wdev = info->user_ptr[1];
5715         struct cfg80211_scan_request *request;
5716         struct nlattr *attr;
5717         struct wiphy *wiphy;
5718         int err, tmp, n_ssids = 0, n_channels, i;
5719         size_t ie_len;
5720
5721         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
5722                 return -EINVAL;
5723
5724         wiphy = &rdev->wiphy;
5725
5726         if (!rdev->ops->scan)
5727                 return -EOPNOTSUPP;
5728
5729         if (rdev->scan_req || rdev->scan_msg) {
5730                 err = -EBUSY;
5731                 goto unlock;
5732         }
5733
5734         if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5735                 n_channels = validate_scan_freqs(
5736                                 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
5737                 if (!n_channels) {
5738                         err = -EINVAL;
5739                         goto unlock;
5740                 }
5741         } else {
5742                 n_channels = ieee80211_get_num_supported_channels(wiphy);
5743         }
5744
5745         if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
5746                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
5747                         n_ssids++;
5748
5749         if (n_ssids > wiphy->max_scan_ssids) {
5750                 err = -EINVAL;
5751                 goto unlock;
5752         }
5753
5754         if (info->attrs[NL80211_ATTR_IE])
5755                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5756         else
5757                 ie_len = 0;
5758
5759         if (ie_len > wiphy->max_scan_ie_len) {
5760                 err = -EINVAL;
5761                 goto unlock;
5762         }
5763
5764         request = kzalloc(sizeof(*request)
5765                         + sizeof(*request->ssids) * n_ssids
5766                         + sizeof(*request->channels) * n_channels
5767                         + ie_len, GFP_KERNEL);
5768         if (!request) {
5769                 err = -ENOMEM;
5770                 goto unlock;
5771         }
5772
5773         if (n_ssids)
5774                 request->ssids = (void *)&request->channels[n_channels];
5775         request->n_ssids = n_ssids;
5776         if (ie_len) {
5777                 if (request->ssids)
5778                         request->ie = (void *)(request->ssids + n_ssids);
5779                 else
5780                         request->ie = (void *)(request->channels + n_channels);
5781         }
5782
5783         i = 0;
5784         if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5785                 /* user specified, bail out if channel not found */
5786                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) {
5787                         struct ieee80211_channel *chan;
5788
5789                         chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
5790
5791                         if (!chan) {
5792                                 err = -EINVAL;
5793                                 goto out_free;
5794                         }
5795
5796                         /* ignore disabled channels */
5797                         if (chan->flags & IEEE80211_CHAN_DISABLED)
5798                                 continue;
5799
5800                         request->channels[i] = chan;
5801                         i++;
5802                 }
5803         } else {
5804                 enum ieee80211_band band;
5805
5806                 /* all channels */
5807                 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
5808                         int j;
5809                         if (!wiphy->bands[band])
5810                                 continue;
5811                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
5812                                 struct ieee80211_channel *chan;
5813
5814                                 chan = &wiphy->bands[band]->channels[j];
5815
5816                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
5817                                         continue;
5818
5819                                 request->channels[i] = chan;
5820                                 i++;
5821                         }
5822                 }
5823         }
5824
5825         if (!i) {
5826                 err = -EINVAL;
5827                 goto out_free;
5828         }
5829
5830         request->n_channels = i;
5831
5832         i = 0;
5833         if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
5834                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
5835                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
5836                                 err = -EINVAL;
5837                                 goto out_free;
5838                         }
5839                         request->ssids[i].ssid_len = nla_len(attr);
5840                         memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
5841                         i++;
5842                 }
5843         }
5844
5845         if (info->attrs[NL80211_ATTR_IE]) {
5846                 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5847                 memcpy((void *)request->ie,
5848                        nla_data(info->attrs[NL80211_ATTR_IE]),
5849                        request->ie_len);
5850         }
5851
5852         for (i = 0; i < IEEE80211_NUM_BANDS; i++)
5853                 if (wiphy->bands[i])
5854                         request->rates[i] =
5855                                 (1 << wiphy->bands[i]->n_bitrates) - 1;
5856
5857         if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
5858                 nla_for_each_nested(attr,
5859                                     info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
5860                                     tmp) {
5861                         enum ieee80211_band band = nla_type(attr);
5862
5863                         if (band < 0 || band >= IEEE80211_NUM_BANDS) {
5864                                 err = -EINVAL;
5865                                 goto out_free;
5866                         }
5867
5868                         if (!wiphy->bands[band])
5869                                 continue;
5870
5871                         err = ieee80211_get_ratemask(wiphy->bands[band],
5872                                                      nla_data(attr),
5873                                                      nla_len(attr),
5874                                                      &request->rates[band]);
5875                         if (err)
5876                                 goto out_free;
5877                 }
5878         }
5879
5880         if (info->attrs[NL80211_ATTR_SCAN_FLAGS]) {
5881                 request->flags = nla_get_u32(
5882                         info->attrs[NL80211_ATTR_SCAN_FLAGS]);
5883                 if ((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
5884                     !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) {
5885                         err = -EOPNOTSUPP;
5886                         goto out_free;
5887                 }
5888
5889                 if (request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
5890                         if (!(wiphy->features &
5891                                         NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR)) {
5892                                 err = -EOPNOTSUPP;
5893                                 goto out_free;
5894                         }
5895
5896                         if (wdev->current_bss) {
5897                                 err = -EOPNOTSUPP;
5898                                 goto out_free;
5899                         }
5900
5901                         err = nl80211_parse_random_mac(info->attrs,
5902                                                        request->mac_addr,
5903                                                        request->mac_addr_mask);
5904                         if (err)
5905                                 goto out_free;
5906                 }
5907         }
5908
5909         request->no_cck =
5910                 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
5911
5912         request->wdev = wdev;
5913         request->wiphy = &rdev->wiphy;
5914         request->scan_start = jiffies;
5915
5916         rdev->scan_req = request;
5917         err = rdev_scan(rdev, request);
5918
5919         if (!err) {
5920                 nl80211_send_scan_start(rdev, wdev);
5921                 if (wdev->netdev)
5922                         dev_hold(wdev->netdev);
5923         } else {
5924  out_free:
5925                 rdev->scan_req = NULL;
5926                 kfree(request);
5927         }
5928
5929  unlock:
5930         return err;
5931 }
5932
5933 static struct cfg80211_sched_scan_request *
5934 nl80211_parse_sched_scan(struct wiphy *wiphy, struct wireless_dev *wdev,
5935                          struct nlattr **attrs)
5936 {
5937         struct cfg80211_sched_scan_request *request;
5938         struct nlattr *attr;
5939         int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i;
5940         u32 interval;
5941         enum ieee80211_band band;
5942         size_t ie_len;
5943         struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
5944         s32 default_match_rssi = NL80211_SCAN_RSSI_THOLD_OFF;
5945
5946         if (!is_valid_ie_attr(attrs[NL80211_ATTR_IE]))
5947                 return ERR_PTR(-EINVAL);
5948
5949         if (!attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
5950                 return ERR_PTR(-EINVAL);
5951
5952         interval = nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
5953         if (interval == 0)
5954                 return ERR_PTR(-EINVAL);
5955
5956         if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5957                 n_channels = validate_scan_freqs(
5958                                 attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
5959                 if (!n_channels)
5960                         return ERR_PTR(-EINVAL);
5961         } else {
5962                 n_channels = ieee80211_get_num_supported_channels(wiphy);
5963         }
5964
5965         if (attrs[NL80211_ATTR_SCAN_SSIDS])
5966                 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
5967                                     tmp)
5968                         n_ssids++;
5969
5970         if (n_ssids > wiphy->max_sched_scan_ssids)
5971                 return ERR_PTR(-EINVAL);
5972
5973         /*
5974          * First, count the number of 'real' matchsets. Due to an issue with
5975          * the old implementation, matchsets containing only the RSSI attribute
5976          * (NL80211_SCHED_SCAN_MATCH_ATTR_RSSI) are considered as the 'default'
5977          * RSSI for all matchsets, rather than their own matchset for reporting
5978          * all APs with a strong RSSI. This is needed to be compatible with
5979          * older userspace that treated a matchset with only the RSSI as the
5980          * global RSSI for all other matchsets - if there are other matchsets.
5981          */
5982         if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
5983                 nla_for_each_nested(attr,
5984                                     attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
5985                                     tmp) {
5986                         struct nlattr *rssi;
5987
5988                         err = nla_parse(tb, NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
5989                                         nla_data(attr), nla_len(attr),
5990                                         nl80211_match_policy);
5991                         if (err)
5992                                 return ERR_PTR(err);
5993                         /* add other standalone attributes here */
5994                         if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID]) {
5995                                 n_match_sets++;
5996                                 continue;
5997                         }
5998                         rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
5999                         if (rssi)
6000                                 default_match_rssi = nla_get_s32(rssi);
6001                 }
6002         }
6003
6004         /* However, if there's no other matchset, add the RSSI one */
6005         if (!n_match_sets && default_match_rssi != NL80211_SCAN_RSSI_THOLD_OFF)
6006                 n_match_sets = 1;
6007
6008         if (n_match_sets > wiphy->max_match_sets)
6009                 return ERR_PTR(-EINVAL);
6010
6011         if (attrs[NL80211_ATTR_IE])
6012                 ie_len = nla_len(attrs[NL80211_ATTR_IE]);
6013         else
6014                 ie_len = 0;
6015
6016         if (ie_len > wiphy->max_sched_scan_ie_len)
6017                 return ERR_PTR(-EINVAL);
6018
6019         request = kzalloc(sizeof(*request)
6020                         + sizeof(*request->ssids) * n_ssids
6021                         + sizeof(*request->match_sets) * n_match_sets
6022                         + sizeof(*request->channels) * n_channels
6023                         + ie_len, GFP_KERNEL);
6024         if (!request)
6025                 return ERR_PTR(-ENOMEM);
6026
6027         if (n_ssids)
6028                 request->ssids = (void *)&request->channels[n_channels];
6029         request->n_ssids = n_ssids;
6030         if (ie_len) {
6031                 if (request->ssids)
6032                         request->ie = (void *)(request->ssids + n_ssids);
6033                 else
6034                         request->ie = (void *)(request->channels + n_channels);
6035         }
6036
6037         if (n_match_sets) {
6038                 if (request->ie)
6039                         request->match_sets = (void *)(request->ie + ie_len);
6040                 else if (request->ssids)
6041                         request->match_sets =
6042                                 (void *)(request->ssids + n_ssids);
6043                 else
6044                         request->match_sets =
6045                                 (void *)(request->channels + n_channels);
6046         }
6047         request->n_match_sets = n_match_sets;
6048
6049         i = 0;
6050         if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
6051                 /* user specified, bail out if channel not found */
6052                 nla_for_each_nested(attr,
6053                                     attrs[NL80211_ATTR_SCAN_FREQUENCIES],
6054                                     tmp) {
6055                         struct ieee80211_channel *chan;
6056
6057                         chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
6058
6059                         if (!chan) {
6060                                 err = -EINVAL;
6061                                 goto out_free;
6062                         }
6063
6064                         /* ignore disabled channels */
6065                         if (chan->flags & IEEE80211_CHAN_DISABLED)
6066                                 continue;
6067
6068                         request->channels[i] = chan;
6069                         i++;
6070                 }
6071         } else {
6072                 /* all channels */
6073                 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
6074                         int j;
6075                         if (!wiphy->bands[band])
6076                                 continue;
6077                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
6078                                 struct ieee80211_channel *chan;
6079
6080                                 chan = &wiphy->bands[band]->channels[j];
6081
6082                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
6083                                         continue;
6084
6085                                 request->channels[i] = chan;
6086                                 i++;
6087                         }
6088                 }
6089         }
6090
6091         if (!i) {
6092                 err = -EINVAL;
6093                 goto out_free;
6094         }
6095
6096         request->n_channels = i;
6097
6098         i = 0;
6099         if (attrs[NL80211_ATTR_SCAN_SSIDS]) {
6100                 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
6101                                     tmp) {
6102                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
6103                                 err = -EINVAL;
6104                                 goto out_free;
6105                         }
6106                         request->ssids[i].ssid_len = nla_len(attr);
6107                         memcpy(request->ssids[i].ssid, nla_data(attr),
6108                                nla_len(attr));
6109                         i++;
6110                 }
6111         }
6112
6113         i = 0;
6114         if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
6115                 nla_for_each_nested(attr,
6116                                     attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
6117                                     tmp) {
6118                         struct nlattr *ssid, *rssi;
6119
6120                         err = nla_parse(tb, NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
6121                                         nla_data(attr), nla_len(attr),
6122                                         nl80211_match_policy);
6123                         if (err)
6124                                 goto out_free;
6125                         ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID];
6126                         if (ssid) {
6127                                 if (WARN_ON(i >= n_match_sets)) {
6128                                         /* this indicates a programming error,
6129                                          * the loop above should have verified
6130                                          * things properly
6131                                          */
6132                                         err = -EINVAL;
6133                                         goto out_free;
6134                                 }
6135
6136                                 if (nla_len(ssid) > IEEE80211_MAX_SSID_LEN) {
6137                                         err = -EINVAL;
6138                                         goto out_free;
6139                                 }
6140                                 memcpy(request->match_sets[i].ssid.ssid,
6141                                        nla_data(ssid), nla_len(ssid));
6142                                 request->match_sets[i].ssid.ssid_len =
6143                                         nla_len(ssid);
6144                                 /* special attribute - old implemenation w/a */
6145                                 request->match_sets[i].rssi_thold =
6146                                         default_match_rssi;
6147                                 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
6148                                 if (rssi)
6149                                         request->match_sets[i].rssi_thold =
6150                                                 nla_get_s32(rssi);
6151                         }
6152                         i++;
6153                 }
6154
6155                 /* there was no other matchset, so the RSSI one is alone */
6156                 if (i == 0 && n_match_sets)
6157                         request->match_sets[0].rssi_thold = default_match_rssi;
6158
6159                 request->min_rssi_thold = INT_MAX;
6160                 for (i = 0; i < n_match_sets; i++)
6161                         request->min_rssi_thold =
6162                                 min(request->match_sets[i].rssi_thold,
6163                                     request->min_rssi_thold);
6164         } else {
6165                 request->min_rssi_thold = NL80211_SCAN_RSSI_THOLD_OFF;
6166         }
6167
6168         if (ie_len) {
6169                 request->ie_len = ie_len;
6170                 memcpy((void *)request->ie,
6171                        nla_data(attrs[NL80211_ATTR_IE]),
6172                        request->ie_len);
6173         }
6174
6175         if (attrs[NL80211_ATTR_SCAN_FLAGS]) {
6176                 request->flags = nla_get_u32(
6177                         attrs[NL80211_ATTR_SCAN_FLAGS]);
6178                 if ((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
6179                     !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) {
6180                         err = -EOPNOTSUPP;
6181                         goto out_free;
6182                 }
6183
6184                 if (request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
6185                         u32 flg = NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR;
6186
6187                         if (!wdev) /* must be net-detect */
6188                                 flg = NL80211_FEATURE_ND_RANDOM_MAC_ADDR;
6189
6190                         if (!(wiphy->features & flg)) {
6191                                 err = -EOPNOTSUPP;
6192                                 goto out_free;
6193                         }
6194
6195                         if (wdev && wdev->current_bss) {
6196                                 err = -EOPNOTSUPP;
6197                                 goto out_free;
6198                         }
6199
6200                         err = nl80211_parse_random_mac(attrs, request->mac_addr,
6201                                                        request->mac_addr_mask);
6202                         if (err)
6203                                 goto out_free;
6204                 }
6205         }
6206
6207         request->interval = interval;
6208         request->scan_start = jiffies;
6209
6210         return request;
6211
6212 out_free:
6213         kfree(request);
6214         return ERR_PTR(err);
6215 }
6216
6217 static int nl80211_start_sched_scan(struct sk_buff *skb,
6218                                     struct genl_info *info)
6219 {
6220         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6221         struct net_device *dev = info->user_ptr[1];
6222         struct wireless_dev *wdev = dev->ieee80211_ptr;
6223         struct cfg80211_sched_scan_request *sched_scan_req;
6224         int err;
6225
6226         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
6227             !rdev->ops->sched_scan_start)
6228                 return -EOPNOTSUPP;
6229
6230         if (rdev->sched_scan_req)
6231                 return -EINPROGRESS;
6232
6233         sched_scan_req = nl80211_parse_sched_scan(&rdev->wiphy, wdev,
6234                                                   info->attrs);
6235
6236         err = PTR_ERR_OR_ZERO(sched_scan_req);
6237         if (err)
6238                 goto out_err;
6239
6240         err = rdev_sched_scan_start(rdev, dev, sched_scan_req);
6241         if (err)
6242                 goto out_free;
6243
6244         sched_scan_req->dev = dev;
6245         sched_scan_req->wiphy = &rdev->wiphy;
6246
6247         if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
6248                 sched_scan_req->owner_nlportid = info->snd_portid;
6249
6250         rcu_assign_pointer(rdev->sched_scan_req, sched_scan_req);
6251
6252         nl80211_send_sched_scan(rdev, dev,
6253                                 NL80211_CMD_START_SCHED_SCAN);
6254         return 0;
6255
6256 out_free:
6257         kfree(sched_scan_req);
6258 out_err:
6259         return err;
6260 }
6261
6262 static int nl80211_stop_sched_scan(struct sk_buff *skb,
6263                                    struct genl_info *info)
6264 {
6265         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6266
6267         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
6268             !rdev->ops->sched_scan_stop)
6269                 return -EOPNOTSUPP;
6270
6271         return __cfg80211_stop_sched_scan(rdev, false);
6272 }
6273
6274 static int nl80211_start_radar_detection(struct sk_buff *skb,
6275                                          struct genl_info *info)
6276 {
6277         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6278         struct net_device *dev = info->user_ptr[1];
6279         struct wireless_dev *wdev = dev->ieee80211_ptr;
6280         struct cfg80211_chan_def chandef;
6281         enum nl80211_dfs_regions dfs_region;
6282         unsigned int cac_time_ms;
6283         int err;
6284
6285         dfs_region = reg_get_dfs_region(wdev->wiphy);
6286         if (dfs_region == NL80211_DFS_UNSET)
6287                 return -EINVAL;
6288
6289         err = nl80211_parse_chandef(rdev, info, &chandef);
6290         if (err)
6291                 return err;
6292
6293         if (netif_carrier_ok(dev))
6294                 return -EBUSY;
6295
6296         if (wdev->cac_started)
6297                 return -EBUSY;
6298
6299         err = cfg80211_chandef_dfs_required(wdev->wiphy, &chandef,
6300                                             wdev->iftype);
6301         if (err < 0)
6302                 return err;
6303
6304         if (err == 0)
6305                 return -EINVAL;
6306
6307         if (!cfg80211_chandef_dfs_usable(wdev->wiphy, &chandef))
6308                 return -EINVAL;
6309
6310         if (!rdev->ops->start_radar_detection)
6311                 return -EOPNOTSUPP;
6312
6313         cac_time_ms = cfg80211_chandef_dfs_cac_time(&rdev->wiphy, &chandef);
6314         if (WARN_ON(!cac_time_ms))
6315                 cac_time_ms = IEEE80211_DFS_MIN_CAC_TIME_MS;
6316
6317         err = rdev->ops->start_radar_detection(&rdev->wiphy, dev, &chandef,
6318                                                cac_time_ms);
6319         if (!err) {
6320                 wdev->chandef = chandef;
6321                 wdev->cac_started = true;
6322                 wdev->cac_start_time = jiffies;
6323                 wdev->cac_time_ms = cac_time_ms;
6324         }
6325         return err;
6326 }
6327
6328 static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info)
6329 {
6330         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6331         struct net_device *dev = info->user_ptr[1];
6332         struct wireless_dev *wdev = dev->ieee80211_ptr;
6333         struct cfg80211_csa_settings params;
6334         /* csa_attrs is defined static to avoid waste of stack size - this
6335          * function is called under RTNL lock, so this should not be a problem.
6336          */
6337         static struct nlattr *csa_attrs[NL80211_ATTR_MAX+1];
6338         int err;
6339         bool need_new_beacon = false;
6340         int len, i;
6341         u32 cs_count;
6342
6343         if (!rdev->ops->channel_switch ||
6344             !(rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH))
6345                 return -EOPNOTSUPP;
6346
6347         switch (dev->ieee80211_ptr->iftype) {
6348         case NL80211_IFTYPE_AP:
6349         case NL80211_IFTYPE_P2P_GO:
6350                 need_new_beacon = true;
6351
6352                 /* useless if AP is not running */
6353                 if (!wdev->beacon_interval)
6354                         return -ENOTCONN;
6355                 break;
6356         case NL80211_IFTYPE_ADHOC:
6357                 if (!wdev->ssid_len)
6358                         return -ENOTCONN;
6359                 break;
6360         case NL80211_IFTYPE_MESH_POINT:
6361                 if (!wdev->mesh_id_len)
6362                         return -ENOTCONN;
6363                 break;
6364         default:
6365                 return -EOPNOTSUPP;
6366         }
6367
6368         memset(&params, 0, sizeof(params));
6369
6370         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
6371             !info->attrs[NL80211_ATTR_CH_SWITCH_COUNT])
6372                 return -EINVAL;
6373
6374         /* only important for AP, IBSS and mesh create IEs internally */
6375         if (need_new_beacon && !info->attrs[NL80211_ATTR_CSA_IES])
6376                 return -EINVAL;
6377
6378         /* Even though the attribute is u32, the specification says
6379          * u8, so let's make sure we don't overflow.
6380          */
6381         cs_count = nla_get_u32(info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]);
6382         if (cs_count > 255)
6383                 return -EINVAL;
6384
6385         params.count = cs_count;
6386
6387         if (!need_new_beacon)
6388                 goto skip_beacons;
6389
6390         err = nl80211_parse_beacon(info->attrs, &params.beacon_after);
6391         if (err)
6392                 return err;
6393
6394         err = nla_parse_nested(csa_attrs, NL80211_ATTR_MAX,
6395                                info->attrs[NL80211_ATTR_CSA_IES],
6396                                nl80211_policy);
6397         if (err)
6398                 return err;
6399
6400         err = nl80211_parse_beacon(csa_attrs, &params.beacon_csa);
6401         if (err)
6402                 return err;
6403
6404         if (!csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON])
6405                 return -EINVAL;
6406
6407         len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
6408         if (!len || (len % sizeof(u16)))
6409                 return -EINVAL;
6410
6411         params.n_counter_offsets_beacon = len / sizeof(u16);
6412         if (rdev->wiphy.max_num_csa_counters &&
6413             (params.n_counter_offsets_beacon >
6414              rdev->wiphy.max_num_csa_counters))
6415                 return -EINVAL;
6416
6417         params.counter_offsets_beacon =
6418                 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
6419
6420         /* sanity checks - counters should fit and be the same */
6421         for (i = 0; i < params.n_counter_offsets_beacon; i++) {
6422                 u16 offset = params.counter_offsets_beacon[i];
6423
6424                 if (offset >= params.beacon_csa.tail_len)
6425                         return -EINVAL;
6426
6427                 if (params.beacon_csa.tail[offset] != params.count)
6428                         return -EINVAL;
6429         }
6430
6431         if (csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]) {
6432                 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
6433                 if (!len || (len % sizeof(u16)))
6434                         return -EINVAL;
6435
6436                 params.n_counter_offsets_presp = len / sizeof(u16);
6437                 if (rdev->wiphy.max_num_csa_counters &&
6438                     (params.n_counter_offsets_beacon >
6439                      rdev->wiphy.max_num_csa_counters))
6440                         return -EINVAL;
6441
6442                 params.counter_offsets_presp =
6443                         nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
6444
6445                 /* sanity checks - counters should fit and be the same */
6446                 for (i = 0; i < params.n_counter_offsets_presp; i++) {
6447                         u16 offset = params.counter_offsets_presp[i];
6448
6449                         if (offset >= params.beacon_csa.probe_resp_len)
6450                                 return -EINVAL;
6451
6452                         if (params.beacon_csa.probe_resp[offset] !=
6453                             params.count)
6454                                 return -EINVAL;
6455                 }
6456         }
6457
6458 skip_beacons:
6459         err = nl80211_parse_chandef(rdev, info, &params.chandef);
6460         if (err)
6461                 return err;
6462
6463         if (!cfg80211_reg_can_beacon(&rdev->wiphy, &params.chandef,
6464                                      wdev->iftype))
6465                 return -EINVAL;
6466
6467         err = cfg80211_chandef_dfs_required(wdev->wiphy,
6468                                             &params.chandef,
6469                                             wdev->iftype);
6470         if (err < 0)
6471                 return err;
6472
6473         if (err > 0)
6474                 params.radar_required = true;
6475
6476         if (info->attrs[NL80211_ATTR_CH_SWITCH_BLOCK_TX])
6477                 params.block_tx = true;
6478
6479         wdev_lock(wdev);
6480         err = rdev_channel_switch(rdev, dev, &params);
6481         wdev_unlock(wdev);
6482
6483         return err;
6484 }
6485
6486 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
6487                             u32 seq, int flags,
6488                             struct cfg80211_registered_device *rdev,
6489                             struct wireless_dev *wdev,
6490                             struct cfg80211_internal_bss *intbss)
6491 {
6492         struct cfg80211_bss *res = &intbss->pub;
6493         const struct cfg80211_bss_ies *ies;
6494         void *hdr;
6495         struct nlattr *bss;
6496
6497         ASSERT_WDEV_LOCK(wdev);
6498
6499         hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
6500                              NL80211_CMD_NEW_SCAN_RESULTS);
6501         if (!hdr)
6502                 return -1;
6503
6504         genl_dump_check_consistent(cb, hdr, &nl80211_fam);
6505
6506         if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation))
6507                 goto nla_put_failure;
6508         if (wdev->netdev &&
6509             nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex))
6510                 goto nla_put_failure;
6511         if (nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
6512                 goto nla_put_failure;
6513
6514         bss = nla_nest_start(msg, NL80211_ATTR_BSS);
6515         if (!bss)
6516                 goto nla_put_failure;
6517         if ((!is_zero_ether_addr(res->bssid) &&
6518              nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid)))
6519                 goto nla_put_failure;
6520
6521         rcu_read_lock();
6522         /* indicate whether we have probe response data or not */
6523         if (rcu_access_pointer(res->proberesp_ies) &&
6524             nla_put_flag(msg, NL80211_BSS_PRESP_DATA))
6525                 goto fail_unlock_rcu;
6526
6527         /* this pointer prefers to be pointed to probe response data
6528          * but is always valid
6529          */
6530         ies = rcu_dereference(res->ies);
6531         if (ies) {
6532                 if (nla_put_u64(msg, NL80211_BSS_TSF, ies->tsf))
6533                         goto fail_unlock_rcu;
6534                 if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS,
6535                                         ies->len, ies->data))
6536                         goto fail_unlock_rcu;
6537         }
6538
6539         /* and this pointer is always (unless driver didn't know) beacon data */
6540         ies = rcu_dereference(res->beacon_ies);
6541         if (ies && ies->from_beacon) {
6542                 if (nla_put_u64(msg, NL80211_BSS_BEACON_TSF, ies->tsf))
6543                         goto fail_unlock_rcu;
6544                 if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES,
6545                                         ies->len, ies->data))
6546                         goto fail_unlock_rcu;
6547         }
6548         rcu_read_unlock();
6549
6550         if (res->beacon_interval &&
6551             nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval))
6552                 goto nla_put_failure;
6553         if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) ||
6554             nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) ||
6555             nla_put_u32(msg, NL80211_BSS_CHAN_WIDTH, res->scan_width) ||
6556             nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO,
6557                         jiffies_to_msecs(jiffies - intbss->ts)))
6558                 goto nla_put_failure;
6559
6560         switch (rdev->wiphy.signal_type) {
6561         case CFG80211_SIGNAL_TYPE_MBM:
6562                 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal))
6563                         goto nla_put_failure;
6564                 break;
6565         case CFG80211_SIGNAL_TYPE_UNSPEC:
6566                 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal))
6567                         goto nla_put_failure;
6568                 break;
6569         default:
6570                 break;
6571         }
6572
6573         switch (wdev->iftype) {
6574         case NL80211_IFTYPE_P2P_CLIENT:
6575         case NL80211_IFTYPE_STATION:
6576                 if (intbss == wdev->current_bss &&
6577                     nla_put_u32(msg, NL80211_BSS_STATUS,
6578                                 NL80211_BSS_STATUS_ASSOCIATED))
6579                         goto nla_put_failure;
6580                 break;
6581         case NL80211_IFTYPE_ADHOC:
6582                 if (intbss == wdev->current_bss &&
6583                     nla_put_u32(msg, NL80211_BSS_STATUS,
6584                                 NL80211_BSS_STATUS_IBSS_JOINED))
6585                         goto nla_put_failure;
6586                 break;
6587         default:
6588                 break;
6589         }
6590
6591         nla_nest_end(msg, bss);
6592
6593         return genlmsg_end(msg, hdr);
6594
6595  fail_unlock_rcu:
6596         rcu_read_unlock();
6597  nla_put_failure:
6598         genlmsg_cancel(msg, hdr);
6599         return -EMSGSIZE;
6600 }
6601
6602 static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb)
6603 {
6604         struct cfg80211_registered_device *rdev;
6605         struct cfg80211_internal_bss *scan;
6606         struct wireless_dev *wdev;
6607         int start = cb->args[2], idx = 0;
6608         int err;
6609
6610         err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
6611         if (err)
6612                 return err;
6613
6614         wdev_lock(wdev);
6615         spin_lock_bh(&rdev->bss_lock);
6616         cfg80211_bss_expire(rdev);
6617
6618         cb->seq = rdev->bss_generation;
6619
6620         list_for_each_entry(scan, &rdev->bss_list, list) {
6621                 if (++idx <= start)
6622                         continue;
6623                 if (nl80211_send_bss(skb, cb,
6624                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
6625                                 rdev, wdev, scan) < 0) {
6626                         idx--;
6627                         break;
6628                 }
6629         }
6630
6631         spin_unlock_bh(&rdev->bss_lock);
6632         wdev_unlock(wdev);
6633
6634         cb->args[2] = idx;
6635         nl80211_finish_wdev_dump(rdev);
6636
6637         return skb->len;
6638 }
6639
6640 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq,
6641                                int flags, struct net_device *dev,
6642                                bool allow_radio_stats,
6643                                struct survey_info *survey)
6644 {
6645         void *hdr;
6646         struct nlattr *infoattr;
6647
6648         /* skip radio stats if userspace didn't request them */
6649         if (!survey->channel && !allow_radio_stats)
6650                 return 0;
6651
6652         hdr = nl80211hdr_put(msg, portid, seq, flags,
6653                              NL80211_CMD_NEW_SURVEY_RESULTS);
6654         if (!hdr)
6655                 return -ENOMEM;
6656
6657         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
6658                 goto nla_put_failure;
6659
6660         infoattr = nla_nest_start(msg, NL80211_ATTR_SURVEY_INFO);
6661         if (!infoattr)
6662                 goto nla_put_failure;
6663
6664         if (survey->channel &&
6665             nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY,
6666                         survey->channel->center_freq))
6667                 goto nla_put_failure;
6668
6669         if ((survey->filled & SURVEY_INFO_NOISE_DBM) &&
6670             nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise))
6671                 goto nla_put_failure;
6672         if ((survey->filled & SURVEY_INFO_IN_USE) &&
6673             nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE))
6674                 goto nla_put_failure;
6675         if ((survey->filled & SURVEY_INFO_TIME) &&
6676             nla_put_u64(msg, NL80211_SURVEY_INFO_TIME,
6677                         survey->time))
6678                 goto nla_put_failure;
6679         if ((survey->filled & SURVEY_INFO_TIME_BUSY) &&
6680             nla_put_u64(msg, NL80211_SURVEY_INFO_TIME_BUSY,
6681                         survey->time_busy))
6682                 goto nla_put_failure;
6683         if ((survey->filled & SURVEY_INFO_TIME_EXT_BUSY) &&
6684             nla_put_u64(msg, NL80211_SURVEY_INFO_TIME_EXT_BUSY,
6685                         survey->time_ext_busy))
6686                 goto nla_put_failure;
6687         if ((survey->filled & SURVEY_INFO_TIME_RX) &&
6688             nla_put_u64(msg, NL80211_SURVEY_INFO_TIME_RX,
6689                         survey->time_rx))
6690                 goto nla_put_failure;
6691         if ((survey->filled & SURVEY_INFO_TIME_TX) &&
6692             nla_put_u64(msg, NL80211_SURVEY_INFO_TIME_TX,
6693                         survey->time_tx))
6694                 goto nla_put_failure;
6695         if ((survey->filled & SURVEY_INFO_TIME_SCAN) &&
6696             nla_put_u64(msg, NL80211_SURVEY_INFO_TIME_SCAN,
6697                         survey->time_scan))
6698                 goto nla_put_failure;
6699
6700         nla_nest_end(msg, infoattr);
6701
6702         return genlmsg_end(msg, hdr);
6703
6704  nla_put_failure:
6705         genlmsg_cancel(msg, hdr);
6706         return -EMSGSIZE;
6707 }
6708
6709 static int nl80211_dump_survey(struct sk_buff *skb, struct netlink_callback *cb)
6710 {
6711         struct survey_info survey;
6712         struct cfg80211_registered_device *rdev;
6713         struct wireless_dev *wdev;
6714         int survey_idx = cb->args[2];
6715         int res;
6716         bool radio_stats;
6717
6718         res = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
6719         if (res)
6720                 return res;
6721
6722         /* prepare_wdev_dump parsed the attributes */
6723         radio_stats = nl80211_fam.attrbuf[NL80211_ATTR_SURVEY_RADIO_STATS];
6724
6725         if (!wdev->netdev) {
6726                 res = -EINVAL;
6727                 goto out_err;
6728         }
6729
6730         if (!rdev->ops->dump_survey) {
6731                 res = -EOPNOTSUPP;
6732                 goto out_err;
6733         }
6734
6735         while (1) {
6736                 res = rdev_dump_survey(rdev, wdev->netdev, survey_idx, &survey);
6737                 if (res == -ENOENT)
6738                         break;
6739                 if (res)
6740                         goto out_err;
6741
6742                 /* don't send disabled channels, but do send non-channel data */
6743                 if (survey.channel &&
6744                     survey.channel->flags & IEEE80211_CHAN_DISABLED) {
6745                         survey_idx++;
6746                         continue;
6747                 }
6748
6749                 if (nl80211_send_survey(skb,
6750                                 NETLINK_CB(cb->skb).portid,
6751                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
6752                                 wdev->netdev, radio_stats, &survey) < 0)
6753                         goto out;
6754                 survey_idx++;
6755         }
6756
6757  out:
6758         cb->args[2] = survey_idx;
6759         res = skb->len;
6760  out_err:
6761         nl80211_finish_wdev_dump(rdev);
6762         return res;
6763 }
6764
6765 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
6766 {
6767         return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
6768                                   NL80211_WPA_VERSION_2));
6769 }
6770
6771 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
6772 {
6773         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6774         struct net_device *dev = info->user_ptr[1];
6775         struct ieee80211_channel *chan;
6776         const u8 *bssid, *ssid, *ie = NULL, *sae_data = NULL;
6777         int err, ssid_len, ie_len = 0, sae_data_len = 0;
6778         enum nl80211_auth_type auth_type;
6779         struct key_parse key;
6780         bool local_state_change;
6781
6782         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6783                 return -EINVAL;
6784
6785         if (!info->attrs[NL80211_ATTR_MAC])
6786                 return -EINVAL;
6787
6788         if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
6789                 return -EINVAL;
6790
6791         if (!info->attrs[NL80211_ATTR_SSID])
6792                 return -EINVAL;
6793
6794         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
6795                 return -EINVAL;
6796
6797         err = nl80211_parse_key(info, &key);
6798         if (err)
6799                 return err;
6800
6801         if (key.idx >= 0) {
6802                 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
6803                         return -EINVAL;
6804                 if (!key.p.key || !key.p.key_len)
6805                         return -EINVAL;
6806                 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
6807                      key.p.key_len != WLAN_KEY_LEN_WEP40) &&
6808                     (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
6809                      key.p.key_len != WLAN_KEY_LEN_WEP104))
6810                         return -EINVAL;
6811                 if (key.idx > 4)
6812                         return -EINVAL;
6813         } else {
6814                 key.p.key_len = 0;
6815                 key.p.key = NULL;
6816         }
6817
6818         if (key.idx >= 0) {
6819                 int i;
6820                 bool ok = false;
6821                 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
6822                         if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
6823                                 ok = true;
6824                                 break;
6825                         }
6826                 }
6827                 if (!ok)
6828                         return -EINVAL;
6829         }
6830
6831         if (!rdev->ops->auth)
6832                 return -EOPNOTSUPP;
6833
6834         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6835             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6836                 return -EOPNOTSUPP;
6837
6838         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6839         chan = nl80211_get_valid_chan(&rdev->wiphy,
6840                                       info->attrs[NL80211_ATTR_WIPHY_FREQ]);
6841         if (!chan)
6842                 return -EINVAL;
6843
6844         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
6845         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
6846
6847         if (info->attrs[NL80211_ATTR_IE]) {
6848                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6849                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6850         }
6851
6852         auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
6853         if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE))
6854                 return -EINVAL;
6855
6856         if (auth_type == NL80211_AUTHTYPE_SAE &&
6857             !info->attrs[NL80211_ATTR_SAE_DATA])
6858                 return -EINVAL;
6859
6860         if (info->attrs[NL80211_ATTR_SAE_DATA]) {
6861                 if (auth_type != NL80211_AUTHTYPE_SAE)
6862                         return -EINVAL;
6863                 sae_data = nla_data(info->attrs[NL80211_ATTR_SAE_DATA]);
6864                 sae_data_len = nla_len(info->attrs[NL80211_ATTR_SAE_DATA]);
6865                 /* need to include at least Auth Transaction and Status Code */
6866                 if (sae_data_len < 4)
6867                         return -EINVAL;
6868         }
6869
6870         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
6871
6872         /*
6873          * Since we no longer track auth state, ignore
6874          * requests to only change local state.
6875          */
6876         if (local_state_change)
6877                 return 0;
6878
6879         wdev_lock(dev->ieee80211_ptr);
6880         err = cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
6881                                  ssid, ssid_len, ie, ie_len,
6882                                  key.p.key, key.p.key_len, key.idx,
6883                                  sae_data, sae_data_len);
6884         wdev_unlock(dev->ieee80211_ptr);
6885         return err;
6886 }
6887
6888 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
6889                                    struct genl_info *info,
6890                                    struct cfg80211_crypto_settings *settings,
6891                                    int cipher_limit)
6892 {
6893         memset(settings, 0, sizeof(*settings));
6894
6895         settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
6896
6897         if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
6898                 u16 proto;
6899                 proto = nla_get_u16(
6900                         info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
6901                 settings->control_port_ethertype = cpu_to_be16(proto);
6902                 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
6903                     proto != ETH_P_PAE)
6904                         return -EINVAL;
6905                 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
6906                         settings->control_port_no_encrypt = true;
6907         } else
6908                 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
6909
6910         if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
6911                 void *data;
6912                 int len, i;
6913
6914                 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
6915                 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
6916                 settings->n_ciphers_pairwise = len / sizeof(u32);
6917
6918                 if (len % sizeof(u32))
6919                         return -EINVAL;
6920
6921                 if (settings->n_ciphers_pairwise > cipher_limit)
6922                         return -EINVAL;
6923
6924                 memcpy(settings->ciphers_pairwise, data, len);
6925
6926                 for (i = 0; i < settings->n_ciphers_pairwise; i++)
6927                         if (!cfg80211_supported_cipher_suite(
6928                                         &rdev->wiphy,
6929                                         settings->ciphers_pairwise[i]))
6930                                 return -EINVAL;
6931         }
6932
6933         if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
6934                 settings->cipher_group =
6935                         nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
6936                 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
6937                                                      settings->cipher_group))
6938                         return -EINVAL;
6939         }
6940
6941         if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
6942                 settings->wpa_versions =
6943                         nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
6944                 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
6945                         return -EINVAL;
6946         }
6947
6948         if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
6949                 void *data;
6950                 int len;
6951
6952                 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
6953                 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
6954                 settings->n_akm_suites = len / sizeof(u32);
6955
6956                 if (len % sizeof(u32))
6957                         return -EINVAL;
6958
6959                 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES)
6960                         return -EINVAL;
6961
6962                 memcpy(settings->akm_suites, data, len);
6963         }
6964
6965         return 0;
6966 }
6967
6968 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
6969 {
6970         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6971         struct net_device *dev = info->user_ptr[1];
6972         struct ieee80211_channel *chan;
6973         struct cfg80211_assoc_request req = {};
6974         const u8 *bssid, *ssid;
6975         int err, ssid_len = 0;
6976
6977         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6978                 return -EINVAL;
6979
6980         if (!info->attrs[NL80211_ATTR_MAC] ||
6981             !info->attrs[NL80211_ATTR_SSID] ||
6982             !info->attrs[NL80211_ATTR_WIPHY_FREQ])
6983                 return -EINVAL;
6984
6985         if (!rdev->ops->assoc)
6986                 return -EOPNOTSUPP;
6987
6988         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6989             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6990                 return -EOPNOTSUPP;
6991
6992         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6993
6994         chan = nl80211_get_valid_chan(&rdev->wiphy,
6995                                       info->attrs[NL80211_ATTR_WIPHY_FREQ]);
6996         if (!chan)
6997                 return -EINVAL;
6998
6999         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
7000         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
7001
7002         if (info->attrs[NL80211_ATTR_IE]) {
7003                 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7004                 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7005         }
7006
7007         if (info->attrs[NL80211_ATTR_USE_MFP]) {
7008                 enum nl80211_mfp mfp =
7009                         nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
7010                 if (mfp == NL80211_MFP_REQUIRED)
7011                         req.use_mfp = true;
7012                 else if (mfp != NL80211_MFP_NO)
7013                         return -EINVAL;
7014         }
7015
7016         if (info->attrs[NL80211_ATTR_PREV_BSSID])
7017                 req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
7018
7019         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
7020                 req.flags |= ASSOC_REQ_DISABLE_HT;
7021
7022         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
7023                 memcpy(&req.ht_capa_mask,
7024                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
7025                        sizeof(req.ht_capa_mask));
7026
7027         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
7028                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
7029                         return -EINVAL;
7030                 memcpy(&req.ht_capa,
7031                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
7032                        sizeof(req.ht_capa));
7033         }
7034
7035         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
7036                 req.flags |= ASSOC_REQ_DISABLE_VHT;
7037
7038         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
7039                 memcpy(&req.vht_capa_mask,
7040                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
7041                        sizeof(req.vht_capa_mask));
7042
7043         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
7044                 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
7045                         return -EINVAL;
7046                 memcpy(&req.vht_capa,
7047                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
7048                        sizeof(req.vht_capa));
7049         }
7050
7051         if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
7052                 if (!(rdev->wiphy.features &
7053                       NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) ||
7054                     !(rdev->wiphy.features & NL80211_FEATURE_QUIET))
7055                         return -EINVAL;
7056                 req.flags |= ASSOC_REQ_USE_RRM;
7057         }
7058
7059         err = nl80211_crypto_settings(rdev, info, &req.crypto, 1);
7060         if (!err) {
7061                 wdev_lock(dev->ieee80211_ptr);
7062                 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid,
7063                                           ssid, ssid_len, &req);
7064                 wdev_unlock(dev->ieee80211_ptr);
7065         }
7066
7067         return err;
7068 }
7069
7070 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
7071 {
7072         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7073         struct net_device *dev = info->user_ptr[1];
7074         const u8 *ie = NULL, *bssid;
7075         int ie_len = 0, err;
7076         u16 reason_code;
7077         bool local_state_change;
7078
7079         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7080                 return -EINVAL;
7081
7082         if (!info->attrs[NL80211_ATTR_MAC])
7083                 return -EINVAL;
7084
7085         if (!info->attrs[NL80211_ATTR_REASON_CODE])
7086                 return -EINVAL;
7087
7088         if (!rdev->ops->deauth)
7089                 return -EOPNOTSUPP;
7090
7091         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7092             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7093                 return -EOPNOTSUPP;
7094
7095         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7096
7097         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
7098         if (reason_code == 0) {
7099                 /* Reason Code 0 is reserved */
7100                 return -EINVAL;
7101         }
7102
7103         if (info->attrs[NL80211_ATTR_IE]) {
7104                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7105                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7106         }
7107
7108         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
7109
7110         wdev_lock(dev->ieee80211_ptr);
7111         err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
7112                                    local_state_change);
7113         wdev_unlock(dev->ieee80211_ptr);
7114         return err;
7115 }
7116
7117 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
7118 {
7119         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7120         struct net_device *dev = info->user_ptr[1];
7121         const u8 *ie = NULL, *bssid;
7122         int ie_len = 0, err;
7123         u16 reason_code;
7124         bool local_state_change;
7125
7126         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7127                 return -EINVAL;
7128
7129         if (!info->attrs[NL80211_ATTR_MAC])
7130                 return -EINVAL;
7131
7132         if (!info->attrs[NL80211_ATTR_REASON_CODE])
7133                 return -EINVAL;
7134
7135         if (!rdev->ops->disassoc)
7136                 return -EOPNOTSUPP;
7137
7138         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7139             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7140                 return -EOPNOTSUPP;
7141
7142         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7143
7144         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
7145         if (reason_code == 0) {
7146                 /* Reason Code 0 is reserved */
7147                 return -EINVAL;
7148         }
7149
7150         if (info->attrs[NL80211_ATTR_IE]) {
7151                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7152                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7153         }
7154
7155         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
7156
7157         wdev_lock(dev->ieee80211_ptr);
7158         err = cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
7159                                      local_state_change);
7160         wdev_unlock(dev->ieee80211_ptr);
7161         return err;
7162 }
7163
7164 static bool
7165 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
7166                          int mcast_rate[IEEE80211_NUM_BANDS],
7167                          int rateval)
7168 {
7169         struct wiphy *wiphy = &rdev->wiphy;
7170         bool found = false;
7171         int band, i;
7172
7173         for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
7174                 struct ieee80211_supported_band *sband;
7175
7176                 sband = wiphy->bands[band];
7177                 if (!sband)
7178                         continue;
7179
7180                 for (i = 0; i < sband->n_bitrates; i++) {
7181                         if (sband->bitrates[i].bitrate == rateval) {
7182                                 mcast_rate[band] = i + 1;
7183                                 found = true;
7184                                 break;
7185                         }
7186                 }
7187         }
7188
7189         return found;
7190 }
7191
7192 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
7193 {
7194         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7195         struct net_device *dev = info->user_ptr[1];
7196         struct cfg80211_ibss_params ibss;
7197         struct wiphy *wiphy;
7198         struct cfg80211_cached_keys *connkeys = NULL;
7199         int err;
7200
7201         memset(&ibss, 0, sizeof(ibss));
7202
7203         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7204                 return -EINVAL;
7205
7206         if (!info->attrs[NL80211_ATTR_SSID] ||
7207             !nla_len(info->attrs[NL80211_ATTR_SSID]))
7208                 return -EINVAL;
7209
7210         ibss.beacon_interval = 100;
7211
7212         if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
7213                 ibss.beacon_interval =
7214                         nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
7215                 if (ibss.beacon_interval < 1 || ibss.beacon_interval > 10000)
7216                         return -EINVAL;
7217         }
7218
7219         if (!rdev->ops->join_ibss)
7220                 return -EOPNOTSUPP;
7221
7222         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
7223                 return -EOPNOTSUPP;
7224
7225         wiphy = &rdev->wiphy;
7226
7227         if (info->attrs[NL80211_ATTR_MAC]) {
7228                 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7229
7230                 if (!is_valid_ether_addr(ibss.bssid))
7231                         return -EINVAL;
7232         }
7233         ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
7234         ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
7235
7236         if (info->attrs[NL80211_ATTR_IE]) {
7237                 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7238                 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7239         }
7240
7241         err = nl80211_parse_chandef(rdev, info, &ibss.chandef);
7242         if (err)
7243                 return err;
7244
7245         if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef,
7246                                      NL80211_IFTYPE_ADHOC))
7247                 return -EINVAL;
7248
7249         switch (ibss.chandef.width) {
7250         case NL80211_CHAN_WIDTH_5:
7251         case NL80211_CHAN_WIDTH_10:
7252         case NL80211_CHAN_WIDTH_20_NOHT:
7253                 break;
7254         case NL80211_CHAN_WIDTH_20:
7255         case NL80211_CHAN_WIDTH_40:
7256                 if (rdev->wiphy.features & NL80211_FEATURE_HT_IBSS)
7257                         break;
7258         default:
7259                 return -EINVAL;
7260         }
7261
7262         ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
7263         ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
7264
7265         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
7266                 u8 *rates =
7267                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
7268                 int n_rates =
7269                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
7270                 struct ieee80211_supported_band *sband =
7271                         wiphy->bands[ibss.chandef.chan->band];
7272
7273                 err = ieee80211_get_ratemask(sband, rates, n_rates,
7274                                              &ibss.basic_rates);
7275                 if (err)
7276                         return err;
7277         }
7278
7279         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
7280                 memcpy(&ibss.ht_capa_mask,
7281                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
7282                        sizeof(ibss.ht_capa_mask));
7283
7284         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
7285                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
7286                         return -EINVAL;
7287                 memcpy(&ibss.ht_capa,
7288                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
7289                        sizeof(ibss.ht_capa));
7290         }
7291
7292         if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
7293             !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
7294                         nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
7295                 return -EINVAL;
7296
7297         if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
7298                 bool no_ht = false;
7299
7300                 connkeys = nl80211_parse_connkeys(rdev,
7301                                           info->attrs[NL80211_ATTR_KEYS],
7302                                           &no_ht);
7303                 if (IS_ERR(connkeys))
7304                         return PTR_ERR(connkeys);
7305
7306                 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) &&
7307                     no_ht) {
7308                         kfree(connkeys);
7309                         return -EINVAL;
7310                 }
7311         }
7312
7313         ibss.control_port =
7314                 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]);
7315
7316         ibss.userspace_handles_dfs =
7317                 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
7318
7319         err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
7320         if (err)
7321                 kzfree(connkeys);
7322         return err;
7323 }
7324
7325 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
7326 {
7327         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7328         struct net_device *dev = info->user_ptr[1];
7329
7330         if (!rdev->ops->leave_ibss)
7331                 return -EOPNOTSUPP;
7332
7333         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
7334                 return -EOPNOTSUPP;
7335
7336         return cfg80211_leave_ibss(rdev, dev, false);
7337 }
7338
7339 static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info)
7340 {
7341         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7342         struct net_device *dev = info->user_ptr[1];
7343         int mcast_rate[IEEE80211_NUM_BANDS];
7344         u32 nla_rate;
7345         int err;
7346
7347         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
7348             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
7349                 return -EOPNOTSUPP;
7350
7351         if (!rdev->ops->set_mcast_rate)
7352                 return -EOPNOTSUPP;
7353
7354         memset(mcast_rate, 0, sizeof(mcast_rate));
7355
7356         if (!info->attrs[NL80211_ATTR_MCAST_RATE])
7357                 return -EINVAL;
7358
7359         nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]);
7360         if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate))
7361                 return -EINVAL;
7362
7363         err = rdev->ops->set_mcast_rate(&rdev->wiphy, dev, mcast_rate);
7364
7365         return err;
7366 }
7367
7368 static struct sk_buff *
7369 __cfg80211_alloc_vendor_skb(struct cfg80211_registered_device *rdev,
7370                             int approxlen, u32 portid, u32 seq,
7371                             enum nl80211_commands cmd,
7372                             enum nl80211_attrs attr,
7373                             const struct nl80211_vendor_cmd_info *info,
7374                             gfp_t gfp)
7375 {
7376         struct sk_buff *skb;
7377         void *hdr;
7378         struct nlattr *data;
7379
7380         skb = nlmsg_new(approxlen + 100, gfp);
7381         if (!skb)
7382                 return NULL;
7383
7384         hdr = nl80211hdr_put(skb, portid, seq, 0, cmd);
7385         if (!hdr) {
7386                 kfree_skb(skb);
7387                 return NULL;
7388         }
7389
7390         if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
7391                 goto nla_put_failure;
7392
7393         if (info) {
7394                 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_ID,
7395                                 info->vendor_id))
7396                         goto nla_put_failure;
7397                 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_SUBCMD,
7398                                 info->subcmd))
7399                         goto nla_put_failure;
7400         }
7401
7402         data = nla_nest_start(skb, attr);
7403
7404         ((void **)skb->cb)[0] = rdev;
7405         ((void **)skb->cb)[1] = hdr;
7406         ((void **)skb->cb)[2] = data;
7407
7408         return skb;
7409
7410  nla_put_failure:
7411         kfree_skb(skb);
7412         return NULL;
7413 }
7414
7415 struct sk_buff *__cfg80211_alloc_event_skb(struct wiphy *wiphy,
7416                                            enum nl80211_commands cmd,
7417                                            enum nl80211_attrs attr,
7418                                            int vendor_event_idx,
7419                                            int approxlen, gfp_t gfp)
7420 {
7421         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
7422         const struct nl80211_vendor_cmd_info *info;
7423
7424         switch (cmd) {
7425         case NL80211_CMD_TESTMODE:
7426                 if (WARN_ON(vendor_event_idx != -1))
7427                         return NULL;
7428                 info = NULL;
7429                 break;
7430         case NL80211_CMD_VENDOR:
7431                 if (WARN_ON(vendor_event_idx < 0 ||
7432                             vendor_event_idx >= wiphy->n_vendor_events))
7433                         return NULL;
7434                 info = &wiphy->vendor_events[vendor_event_idx];
7435                 break;
7436         default:
7437                 WARN_ON(1);
7438                 return NULL;
7439         }
7440
7441         return __cfg80211_alloc_vendor_skb(rdev, approxlen, 0, 0,
7442                                            cmd, attr, info, gfp);
7443 }
7444 EXPORT_SYMBOL(__cfg80211_alloc_event_skb);
7445
7446 void __cfg80211_send_event_skb(struct sk_buff *skb, gfp_t gfp)
7447 {
7448         struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
7449         void *hdr = ((void **)skb->cb)[1];
7450         struct nlattr *data = ((void **)skb->cb)[2];
7451         enum nl80211_multicast_groups mcgrp = NL80211_MCGRP_TESTMODE;
7452
7453         /* clear CB data for netlink core to own from now on */
7454         memset(skb->cb, 0, sizeof(skb->cb));
7455
7456         nla_nest_end(skb, data);
7457         genlmsg_end(skb, hdr);
7458
7459         if (data->nla_type == NL80211_ATTR_VENDOR_DATA)
7460                 mcgrp = NL80211_MCGRP_VENDOR;
7461
7462         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), skb, 0,
7463                                 mcgrp, gfp);
7464 }
7465 EXPORT_SYMBOL(__cfg80211_send_event_skb);
7466
7467 #ifdef CONFIG_NL80211_TESTMODE
7468 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
7469 {
7470         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7471         struct wireless_dev *wdev =
7472                 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
7473         int err;
7474
7475         if (!rdev->ops->testmode_cmd)
7476                 return -EOPNOTSUPP;
7477
7478         if (IS_ERR(wdev)) {
7479                 err = PTR_ERR(wdev);
7480                 if (err != -EINVAL)
7481                         return err;
7482                 wdev = NULL;
7483         } else if (wdev->wiphy != &rdev->wiphy) {
7484                 return -EINVAL;
7485         }
7486
7487         if (!info->attrs[NL80211_ATTR_TESTDATA])
7488                 return -EINVAL;
7489
7490         rdev->cur_cmd_info = info;
7491         err = rdev_testmode_cmd(rdev, wdev,
7492                                 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
7493                                 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
7494         rdev->cur_cmd_info = NULL;
7495
7496         return err;
7497 }
7498
7499 static int nl80211_testmode_dump(struct sk_buff *skb,
7500                                  struct netlink_callback *cb)
7501 {
7502         struct cfg80211_registered_device *rdev;
7503         int err;
7504         long phy_idx;
7505         void *data = NULL;
7506         int data_len = 0;
7507
7508         rtnl_lock();
7509
7510         if (cb->args[0]) {
7511                 /*
7512                  * 0 is a valid index, but not valid for args[0],
7513                  * so we need to offset by 1.
7514                  */
7515                 phy_idx = cb->args[0] - 1;
7516         } else {
7517                 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
7518                                   nl80211_fam.attrbuf, nl80211_fam.maxattr,
7519                                   nl80211_policy);
7520                 if (err)
7521                         goto out_err;
7522
7523                 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk),
7524                                                   nl80211_fam.attrbuf);
7525                 if (IS_ERR(rdev)) {
7526                         err = PTR_ERR(rdev);
7527                         goto out_err;
7528                 }
7529                 phy_idx = rdev->wiphy_idx;
7530                 rdev = NULL;
7531
7532                 if (nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA])
7533                         cb->args[1] =
7534                                 (long)nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA];
7535         }
7536
7537         if (cb->args[1]) {
7538                 data = nla_data((void *)cb->args[1]);
7539                 data_len = nla_len((void *)cb->args[1]);
7540         }
7541
7542         rdev = cfg80211_rdev_by_wiphy_idx(phy_idx);
7543         if (!rdev) {
7544                 err = -ENOENT;
7545                 goto out_err;
7546         }
7547
7548         if (!rdev->ops->testmode_dump) {
7549                 err = -EOPNOTSUPP;
7550                 goto out_err;
7551         }
7552
7553         while (1) {
7554                 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
7555                                            cb->nlh->nlmsg_seq, NLM_F_MULTI,
7556                                            NL80211_CMD_TESTMODE);
7557                 struct nlattr *tmdata;
7558
7559                 if (!hdr)
7560                         break;
7561
7562                 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) {
7563                         genlmsg_cancel(skb, hdr);
7564                         break;
7565                 }
7566
7567                 tmdata = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
7568                 if (!tmdata) {
7569                         genlmsg_cancel(skb, hdr);
7570                         break;
7571                 }
7572                 err = rdev_testmode_dump(rdev, skb, cb, data, data_len);
7573                 nla_nest_end(skb, tmdata);
7574
7575                 if (err == -ENOBUFS || err == -ENOENT) {
7576                         genlmsg_cancel(skb, hdr);
7577                         break;
7578                 } else if (err) {
7579                         genlmsg_cancel(skb, hdr);
7580                         goto out_err;
7581                 }
7582
7583                 genlmsg_end(skb, hdr);
7584         }
7585
7586         err = skb->len;
7587         /* see above */
7588         cb->args[0] = phy_idx + 1;
7589  out_err:
7590         rtnl_unlock();
7591         return err;
7592 }
7593 #endif
7594
7595 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
7596 {
7597         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7598         struct net_device *dev = info->user_ptr[1];
7599         struct cfg80211_connect_params connect;
7600         struct wiphy *wiphy;
7601         struct cfg80211_cached_keys *connkeys = NULL;
7602         int err;
7603
7604         memset(&connect, 0, sizeof(connect));
7605
7606         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7607                 return -EINVAL;
7608
7609         if (!info->attrs[NL80211_ATTR_SSID] ||
7610             !nla_len(info->attrs[NL80211_ATTR_SSID]))
7611                 return -EINVAL;
7612
7613         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
7614                 connect.auth_type =
7615                         nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
7616                 if (!nl80211_valid_auth_type(rdev, connect.auth_type,
7617                                              NL80211_CMD_CONNECT))
7618                         return -EINVAL;
7619         } else
7620                 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
7621
7622         connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
7623
7624         err = nl80211_crypto_settings(rdev, info, &connect.crypto,
7625                                       NL80211_MAX_NR_CIPHER_SUITES);
7626         if (err)
7627                 return err;
7628
7629         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7630             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7631                 return -EOPNOTSUPP;
7632
7633         wiphy = &rdev->wiphy;
7634
7635         connect.bg_scan_period = -1;
7636         if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] &&
7637                 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) {
7638                 connect.bg_scan_period =
7639                         nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]);
7640         }
7641
7642         if (info->attrs[NL80211_ATTR_MAC])
7643                 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7644         else if (info->attrs[NL80211_ATTR_MAC_HINT])
7645                 connect.bssid_hint =
7646                         nla_data(info->attrs[NL80211_ATTR_MAC_HINT]);
7647         connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
7648         connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
7649
7650         if (info->attrs[NL80211_ATTR_IE]) {
7651                 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7652                 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7653         }
7654
7655         if (info->attrs[NL80211_ATTR_USE_MFP]) {
7656                 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
7657                 if (connect.mfp != NL80211_MFP_REQUIRED &&
7658                     connect.mfp != NL80211_MFP_NO)
7659                         return -EINVAL;
7660         } else {
7661                 connect.mfp = NL80211_MFP_NO;
7662         }
7663
7664         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
7665                 connect.channel = nl80211_get_valid_chan(
7666                         wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ]);
7667                 if (!connect.channel)
7668                         return -EINVAL;
7669         } else if (info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]) {
7670                 connect.channel_hint = nl80211_get_valid_chan(
7671                         wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]);
7672                 if (!connect.channel_hint)
7673                         return -EINVAL;
7674         }
7675
7676         if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
7677                 connkeys = nl80211_parse_connkeys(rdev,
7678                                           info->attrs[NL80211_ATTR_KEYS], NULL);
7679                 if (IS_ERR(connkeys))
7680                         return PTR_ERR(connkeys);
7681         }
7682
7683         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
7684                 connect.flags |= ASSOC_REQ_DISABLE_HT;
7685
7686         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
7687                 memcpy(&connect.ht_capa_mask,
7688                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
7689                        sizeof(connect.ht_capa_mask));
7690
7691         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
7692                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) {
7693                         kzfree(connkeys);
7694                         return -EINVAL;
7695                 }
7696                 memcpy(&connect.ht_capa,
7697                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
7698                        sizeof(connect.ht_capa));
7699         }
7700
7701         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
7702                 connect.flags |= ASSOC_REQ_DISABLE_VHT;
7703
7704         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
7705                 memcpy(&connect.vht_capa_mask,
7706                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
7707                        sizeof(connect.vht_capa_mask));
7708
7709         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
7710                 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) {
7711                         kzfree(connkeys);
7712                         return -EINVAL;
7713                 }
7714                 memcpy(&connect.vht_capa,
7715                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
7716                        sizeof(connect.vht_capa));
7717         }
7718
7719         if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
7720                 if (!(rdev->wiphy.features &
7721                       NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) ||
7722                     !(rdev->wiphy.features & NL80211_FEATURE_QUIET))
7723                         return -EINVAL;
7724                 connect.flags |= ASSOC_REQ_USE_RRM;
7725         }
7726
7727         wdev_lock(dev->ieee80211_ptr);
7728         err = cfg80211_connect(rdev, dev, &connect, connkeys, NULL);
7729         wdev_unlock(dev->ieee80211_ptr);
7730         if (err)
7731                 kzfree(connkeys);
7732         return err;
7733 }
7734
7735 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
7736 {
7737         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7738         struct net_device *dev = info->user_ptr[1];
7739         u16 reason;
7740         int ret;
7741
7742         if (!info->attrs[NL80211_ATTR_REASON_CODE])
7743                 reason = WLAN_REASON_DEAUTH_LEAVING;
7744         else
7745                 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
7746
7747         if (reason == 0)
7748                 return -EINVAL;
7749
7750         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7751             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7752                 return -EOPNOTSUPP;
7753
7754         wdev_lock(dev->ieee80211_ptr);
7755         ret = cfg80211_disconnect(rdev, dev, reason, true);
7756         wdev_unlock(dev->ieee80211_ptr);
7757         return ret;
7758 }
7759
7760 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
7761 {
7762         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7763         struct net *net;
7764         int err;
7765         u32 pid;
7766
7767         if (!info->attrs[NL80211_ATTR_PID])
7768                 return -EINVAL;
7769
7770         pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
7771
7772         net = get_net_ns_by_pid(pid);
7773         if (IS_ERR(net))
7774                 return PTR_ERR(net);
7775
7776         err = 0;
7777
7778         /* check if anything to do */
7779         if (!net_eq(wiphy_net(&rdev->wiphy), net))
7780                 err = cfg80211_switch_netns(rdev, net);
7781
7782         put_net(net);
7783         return err;
7784 }
7785
7786 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
7787 {
7788         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7789         int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
7790                         struct cfg80211_pmksa *pmksa) = NULL;
7791         struct net_device *dev = info->user_ptr[1];
7792         struct cfg80211_pmksa pmksa;
7793
7794         memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
7795
7796         if (!info->attrs[NL80211_ATTR_MAC])
7797                 return -EINVAL;
7798
7799         if (!info->attrs[NL80211_ATTR_PMKID])
7800                 return -EINVAL;
7801
7802         pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
7803         pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7804
7805         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7806             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7807                 return -EOPNOTSUPP;
7808
7809         switch (info->genlhdr->cmd) {
7810         case NL80211_CMD_SET_PMKSA:
7811                 rdev_ops = rdev->ops->set_pmksa;
7812                 break;
7813         case NL80211_CMD_DEL_PMKSA:
7814                 rdev_ops = rdev->ops->del_pmksa;
7815                 break;
7816         default:
7817                 WARN_ON(1);
7818                 break;
7819         }
7820
7821         if (!rdev_ops)
7822                 return -EOPNOTSUPP;
7823
7824         return rdev_ops(&rdev->wiphy, dev, &pmksa);
7825 }
7826
7827 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
7828 {
7829         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7830         struct net_device *dev = info->user_ptr[1];
7831
7832         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7833             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7834                 return -EOPNOTSUPP;
7835
7836         if (!rdev->ops->flush_pmksa)
7837                 return -EOPNOTSUPP;
7838
7839         return rdev_flush_pmksa(rdev, dev);
7840 }
7841
7842 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
7843 {
7844         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7845         struct net_device *dev = info->user_ptr[1];
7846         u8 action_code, dialog_token;
7847         u32 peer_capability = 0;
7848         u16 status_code;
7849         u8 *peer;
7850         bool initiator;
7851
7852         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
7853             !rdev->ops->tdls_mgmt)
7854                 return -EOPNOTSUPP;
7855
7856         if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
7857             !info->attrs[NL80211_ATTR_STATUS_CODE] ||
7858             !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
7859             !info->attrs[NL80211_ATTR_IE] ||
7860             !info->attrs[NL80211_ATTR_MAC])
7861                 return -EINVAL;
7862
7863         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
7864         action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
7865         status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
7866         dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
7867         initiator = nla_get_flag(info->attrs[NL80211_ATTR_TDLS_INITIATOR]);
7868         if (info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY])
7869                 peer_capability =
7870                         nla_get_u32(info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY]);
7871
7872         return rdev_tdls_mgmt(rdev, dev, peer, action_code,
7873                               dialog_token, status_code, peer_capability,
7874                               initiator,
7875                               nla_data(info->attrs[NL80211_ATTR_IE]),
7876                               nla_len(info->attrs[NL80211_ATTR_IE]));
7877 }
7878
7879 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
7880 {
7881         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7882         struct net_device *dev = info->user_ptr[1];
7883         enum nl80211_tdls_operation operation;
7884         u8 *peer;
7885
7886         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
7887             !rdev->ops->tdls_oper)
7888                 return -EOPNOTSUPP;
7889
7890         if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
7891             !info->attrs[NL80211_ATTR_MAC])
7892                 return -EINVAL;
7893
7894         operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
7895         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
7896
7897         return rdev_tdls_oper(rdev, dev, peer, operation);
7898 }
7899
7900 static int nl80211_remain_on_channel(struct sk_buff *skb,
7901                                      struct genl_info *info)
7902 {
7903         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7904         struct wireless_dev *wdev = info->user_ptr[1];
7905         struct cfg80211_chan_def chandef;
7906         struct sk_buff *msg;
7907         void *hdr;
7908         u64 cookie;
7909         u32 duration;
7910         int err;
7911
7912         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
7913             !info->attrs[NL80211_ATTR_DURATION])
7914                 return -EINVAL;
7915
7916         duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
7917
7918         if (!rdev->ops->remain_on_channel ||
7919             !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL))
7920                 return -EOPNOTSUPP;
7921
7922         /*
7923          * We should be on that channel for at least a minimum amount of
7924          * time (10ms) but no longer than the driver supports.
7925          */
7926         if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
7927             duration > rdev->wiphy.max_remain_on_channel_duration)
7928                 return -EINVAL;
7929
7930         err = nl80211_parse_chandef(rdev, info, &chandef);
7931         if (err)
7932                 return err;
7933
7934         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7935         if (!msg)
7936                 return -ENOMEM;
7937
7938         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7939                              NL80211_CMD_REMAIN_ON_CHANNEL);
7940         if (!hdr) {
7941                 err = -ENOBUFS;
7942                 goto free_msg;
7943         }
7944
7945         err = rdev_remain_on_channel(rdev, wdev, chandef.chan,
7946                                      duration, &cookie);
7947
7948         if (err)
7949                 goto free_msg;
7950
7951         if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
7952                 goto nla_put_failure;
7953
7954         genlmsg_end(msg, hdr);
7955
7956         return genlmsg_reply(msg, info);
7957
7958  nla_put_failure:
7959         err = -ENOBUFS;
7960  free_msg:
7961         nlmsg_free(msg);
7962         return err;
7963 }
7964
7965 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
7966                                             struct genl_info *info)
7967 {
7968         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7969         struct wireless_dev *wdev = info->user_ptr[1];
7970         u64 cookie;
7971
7972         if (!info->attrs[NL80211_ATTR_COOKIE])
7973                 return -EINVAL;
7974
7975         if (!rdev->ops->cancel_remain_on_channel)
7976                 return -EOPNOTSUPP;
7977
7978         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
7979
7980         return rdev_cancel_remain_on_channel(rdev, wdev, cookie);
7981 }
7982
7983 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
7984                            u8 *rates, u8 rates_len)
7985 {
7986         u8 i;
7987         u32 mask = 0;
7988
7989         for (i = 0; i < rates_len; i++) {
7990                 int rate = (rates[i] & 0x7f) * 5;
7991                 int ridx;
7992                 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
7993                         struct ieee80211_rate *srate =
7994                                 &sband->bitrates[ridx];
7995                         if (rate == srate->bitrate) {
7996                                 mask |= 1 << ridx;
7997                                 break;
7998                         }
7999                 }
8000                 if (ridx == sband->n_bitrates)
8001                         return 0; /* rate not found */
8002         }
8003
8004         return mask;
8005 }
8006
8007 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband,
8008                                u8 *rates, u8 rates_len,
8009                                u8 mcs[IEEE80211_HT_MCS_MASK_LEN])
8010 {
8011         u8 i;
8012
8013         memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN);
8014
8015         for (i = 0; i < rates_len; i++) {
8016                 int ridx, rbit;
8017
8018                 ridx = rates[i] / 8;
8019                 rbit = BIT(rates[i] % 8);
8020
8021                 /* check validity */
8022                 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN))
8023                         return false;
8024
8025                 /* check availability */
8026                 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit)
8027                         mcs[ridx] |= rbit;
8028                 else
8029                         return false;
8030         }
8031
8032         return true;
8033 }
8034
8035 static u16 vht_mcs_map_to_mcs_mask(u8 vht_mcs_map)
8036 {
8037         u16 mcs_mask = 0;
8038
8039         switch (vht_mcs_map) {
8040         case IEEE80211_VHT_MCS_NOT_SUPPORTED:
8041                 break;
8042         case IEEE80211_VHT_MCS_SUPPORT_0_7:
8043                 mcs_mask = 0x00FF;
8044                 break;
8045         case IEEE80211_VHT_MCS_SUPPORT_0_8:
8046                 mcs_mask = 0x01FF;
8047                 break;
8048         case IEEE80211_VHT_MCS_SUPPORT_0_9:
8049                 mcs_mask = 0x03FF;
8050                 break;
8051         default:
8052                 break;
8053         }
8054
8055         return mcs_mask;
8056 }
8057
8058 static void vht_build_mcs_mask(u16 vht_mcs_map,
8059                                u16 vht_mcs_mask[NL80211_VHT_NSS_MAX])
8060 {
8061         u8 nss;
8062
8063         for (nss = 0; nss < NL80211_VHT_NSS_MAX; nss++) {
8064                 vht_mcs_mask[nss] = vht_mcs_map_to_mcs_mask(vht_mcs_map & 0x03);
8065                 vht_mcs_map >>= 2;
8066         }
8067 }
8068
8069 static bool vht_set_mcs_mask(struct ieee80211_supported_band *sband,
8070                              struct nl80211_txrate_vht *txrate,
8071                              u16 mcs[NL80211_VHT_NSS_MAX])
8072 {
8073         u16 tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
8074         u16 tx_mcs_mask[NL80211_VHT_NSS_MAX] = {};
8075         u8 i;
8076
8077         if (!sband->vht_cap.vht_supported)
8078                 return false;
8079
8080         memset(mcs, 0, sizeof(u16) * NL80211_VHT_NSS_MAX);
8081
8082         /* Build vht_mcs_mask from VHT capabilities */
8083         vht_build_mcs_mask(tx_mcs_map, tx_mcs_mask);
8084
8085         for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
8086                 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i])
8087                         mcs[i] = txrate->mcs[i];
8088                 else
8089                         return false;
8090         }
8091
8092         return true;
8093 }
8094
8095 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
8096         [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
8097                                     .len = NL80211_MAX_SUPP_RATES },
8098         [NL80211_TXRATE_HT] = { .type = NLA_BINARY,
8099                                 .len = NL80211_MAX_SUPP_HT_RATES },
8100         [NL80211_TXRATE_VHT] = { .len = sizeof(struct nl80211_txrate_vht)},
8101         [NL80211_TXRATE_GI] = { .type = NLA_U8 },
8102 };
8103
8104 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
8105                                        struct genl_info *info)
8106 {
8107         struct nlattr *tb[NL80211_TXRATE_MAX + 1];
8108         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8109         struct cfg80211_bitrate_mask mask;
8110         int rem, i;
8111         struct net_device *dev = info->user_ptr[1];
8112         struct nlattr *tx_rates;
8113         struct ieee80211_supported_band *sband;
8114         u16 vht_tx_mcs_map;
8115
8116         if (!rdev->ops->set_bitrate_mask)
8117                 return -EOPNOTSUPP;
8118
8119         memset(&mask, 0, sizeof(mask));
8120         /* Default to all rates enabled */
8121         for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
8122                 sband = rdev->wiphy.bands[i];
8123
8124                 if (!sband)
8125                         continue;
8126
8127                 mask.control[i].legacy = (1 << sband->n_bitrates) - 1;
8128                 memcpy(mask.control[i].ht_mcs,
8129                        sband->ht_cap.mcs.rx_mask,
8130                        sizeof(mask.control[i].ht_mcs));
8131
8132                 if (!sband->vht_cap.vht_supported)
8133                         continue;
8134
8135                 vht_tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
8136                 vht_build_mcs_mask(vht_tx_mcs_map, mask.control[i].vht_mcs);
8137         }
8138
8139         /* if no rates are given set it back to the defaults */
8140         if (!info->attrs[NL80211_ATTR_TX_RATES])
8141                 goto out;
8142
8143         /*
8144          * The nested attribute uses enum nl80211_band as the index. This maps
8145          * directly to the enum ieee80211_band values used in cfg80211.
8146          */
8147         BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8);
8148         nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem) {
8149                 enum ieee80211_band band = nla_type(tx_rates);
8150                 int err;
8151
8152                 if (band < 0 || band >= IEEE80211_NUM_BANDS)
8153                         return -EINVAL;
8154                 sband = rdev->wiphy.bands[band];
8155                 if (sband == NULL)
8156                         return -EINVAL;
8157                 err = nla_parse(tb, NL80211_TXRATE_MAX, nla_data(tx_rates),
8158                                 nla_len(tx_rates), nl80211_txattr_policy);
8159                 if (err)
8160                         return err;
8161                 if (tb[NL80211_TXRATE_LEGACY]) {
8162                         mask.control[band].legacy = rateset_to_mask(
8163                                 sband,
8164                                 nla_data(tb[NL80211_TXRATE_LEGACY]),
8165                                 nla_len(tb[NL80211_TXRATE_LEGACY]));
8166                         if ((mask.control[band].legacy == 0) &&
8167                             nla_len(tb[NL80211_TXRATE_LEGACY]))
8168                                 return -EINVAL;
8169                 }
8170                 if (tb[NL80211_TXRATE_HT]) {
8171                         if (!ht_rateset_to_mask(
8172                                         sband,
8173                                         nla_data(tb[NL80211_TXRATE_HT]),
8174                                         nla_len(tb[NL80211_TXRATE_HT]),
8175                                         mask.control[band].ht_mcs))
8176                                 return -EINVAL;
8177                 }
8178                 if (tb[NL80211_TXRATE_VHT]) {
8179                         if (!vht_set_mcs_mask(
8180                                         sband,
8181                                         nla_data(tb[NL80211_TXRATE_VHT]),
8182                                         mask.control[band].vht_mcs))
8183                                 return -EINVAL;
8184                 }
8185                 if (tb[NL80211_TXRATE_GI]) {
8186                         mask.control[band].gi =
8187                                 nla_get_u8(tb[NL80211_TXRATE_GI]);
8188                         if (mask.control[band].gi > NL80211_TXRATE_FORCE_LGI)
8189                                 return -EINVAL;
8190                 }
8191
8192                 if (mask.control[band].legacy == 0) {
8193                         /* don't allow empty legacy rates if HT or VHT
8194                          * are not even supported.
8195                          */
8196                         if (!(rdev->wiphy.bands[band]->ht_cap.ht_supported ||
8197                               rdev->wiphy.bands[band]->vht_cap.vht_supported))
8198                                 return -EINVAL;
8199
8200                         for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
8201                                 if (mask.control[band].ht_mcs[i])
8202                                         goto out;
8203
8204                         for (i = 0; i < NL80211_VHT_NSS_MAX; i++)
8205                                 if (mask.control[band].vht_mcs[i])
8206                                         goto out;
8207
8208                         /* legacy and mcs rates may not be both empty */
8209                         return -EINVAL;
8210                 }
8211         }
8212
8213 out:
8214         return rdev_set_bitrate_mask(rdev, dev, NULL, &mask);
8215 }
8216
8217 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
8218 {
8219         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8220         struct wireless_dev *wdev = info->user_ptr[1];
8221         u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
8222
8223         if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
8224                 return -EINVAL;
8225
8226         if (info->attrs[NL80211_ATTR_FRAME_TYPE])
8227                 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
8228
8229         switch (wdev->iftype) {
8230         case NL80211_IFTYPE_STATION:
8231         case NL80211_IFTYPE_ADHOC:
8232         case NL80211_IFTYPE_P2P_CLIENT:
8233         case NL80211_IFTYPE_AP:
8234         case NL80211_IFTYPE_AP_VLAN:
8235         case NL80211_IFTYPE_MESH_POINT:
8236         case NL80211_IFTYPE_P2P_GO:
8237         case NL80211_IFTYPE_P2P_DEVICE:
8238                 break;
8239         default:
8240                 return -EOPNOTSUPP;
8241         }
8242
8243         /* not much point in registering if we can't reply */
8244         if (!rdev->ops->mgmt_tx)
8245                 return -EOPNOTSUPP;
8246
8247         return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type,
8248                         nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
8249                         nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]));
8250 }
8251
8252 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
8253 {
8254         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8255         struct wireless_dev *wdev = info->user_ptr[1];
8256         struct cfg80211_chan_def chandef;
8257         int err;
8258         void *hdr = NULL;
8259         u64 cookie;
8260         struct sk_buff *msg = NULL;
8261         struct cfg80211_mgmt_tx_params params = {
8262                 .dont_wait_for_ack =
8263                         info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK],
8264         };
8265
8266         if (!info->attrs[NL80211_ATTR_FRAME])
8267                 return -EINVAL;
8268
8269         if (!rdev->ops->mgmt_tx)
8270                 return -EOPNOTSUPP;
8271
8272         switch (wdev->iftype) {
8273         case NL80211_IFTYPE_P2P_DEVICE:
8274                 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
8275                         return -EINVAL;
8276         case NL80211_IFTYPE_STATION:
8277         case NL80211_IFTYPE_ADHOC:
8278         case NL80211_IFTYPE_P2P_CLIENT:
8279         case NL80211_IFTYPE_AP:
8280         case NL80211_IFTYPE_AP_VLAN:
8281         case NL80211_IFTYPE_MESH_POINT:
8282         case NL80211_IFTYPE_P2P_GO:
8283                 break;
8284         default:
8285                 return -EOPNOTSUPP;
8286         }
8287
8288         if (info->attrs[NL80211_ATTR_DURATION]) {
8289                 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
8290                         return -EINVAL;
8291                 params.wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
8292
8293                 /*
8294                  * We should wait on the channel for at least a minimum amount
8295                  * of time (10ms) but no longer than the driver supports.
8296                  */
8297                 if (params.wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
8298                     params.wait > rdev->wiphy.max_remain_on_channel_duration)
8299                         return -EINVAL;
8300
8301         }
8302
8303         params.offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
8304
8305         if (params.offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
8306                 return -EINVAL;
8307
8308         params.no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
8309
8310         /* get the channel if any has been specified, otherwise pass NULL to
8311          * the driver. The latter will use the current one
8312          */
8313         chandef.chan = NULL;
8314         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
8315                 err = nl80211_parse_chandef(rdev, info, &chandef);
8316                 if (err)
8317                         return err;
8318         }
8319
8320         if (!chandef.chan && params.offchan)
8321                 return -EINVAL;
8322
8323         params.buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
8324         params.len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
8325
8326         if (info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]) {
8327                 int len = nla_len(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
8328                 int i;
8329
8330                 if (len % sizeof(u16))
8331                         return -EINVAL;
8332
8333                 params.n_csa_offsets = len / sizeof(u16);
8334                 params.csa_offsets =
8335                         nla_data(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
8336
8337                 /* check that all the offsets fit the frame */
8338                 for (i = 0; i < params.n_csa_offsets; i++) {
8339                         if (params.csa_offsets[i] >= params.len)
8340                                 return -EINVAL;
8341                 }
8342         }
8343
8344         if (!params.dont_wait_for_ack) {
8345                 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8346                 if (!msg)
8347                         return -ENOMEM;
8348
8349                 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8350                                      NL80211_CMD_FRAME);
8351                 if (!hdr) {
8352                         err = -ENOBUFS;
8353                         goto free_msg;
8354                 }
8355         }
8356
8357         params.chan = chandef.chan;
8358         err = cfg80211_mlme_mgmt_tx(rdev, wdev, &params, &cookie);
8359         if (err)
8360                 goto free_msg;
8361
8362         if (msg) {
8363                 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
8364                         goto nla_put_failure;
8365
8366                 genlmsg_end(msg, hdr);
8367                 return genlmsg_reply(msg, info);
8368         }
8369
8370         return 0;
8371
8372  nla_put_failure:
8373         err = -ENOBUFS;
8374  free_msg:
8375         nlmsg_free(msg);
8376         return err;
8377 }
8378
8379 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
8380 {
8381         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8382         struct wireless_dev *wdev = info->user_ptr[1];
8383         u64 cookie;
8384
8385         if (!info->attrs[NL80211_ATTR_COOKIE])
8386                 return -EINVAL;
8387
8388         if (!rdev->ops->mgmt_tx_cancel_wait)
8389                 return -EOPNOTSUPP;
8390
8391         switch (wdev->iftype) {
8392         case NL80211_IFTYPE_STATION:
8393         case NL80211_IFTYPE_ADHOC:
8394         case NL80211_IFTYPE_P2P_CLIENT:
8395         case NL80211_IFTYPE_AP:
8396         case NL80211_IFTYPE_AP_VLAN:
8397         case NL80211_IFTYPE_P2P_GO:
8398         case NL80211_IFTYPE_P2P_DEVICE:
8399                 break;
8400         default:
8401                 return -EOPNOTSUPP;
8402         }
8403
8404         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
8405
8406         return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie);
8407 }
8408
8409 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
8410 {
8411         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8412         struct wireless_dev *wdev;
8413         struct net_device *dev = info->user_ptr[1];
8414         u8 ps_state;
8415         bool state;
8416         int err;
8417
8418         if (!info->attrs[NL80211_ATTR_PS_STATE])
8419                 return -EINVAL;
8420
8421         ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
8422
8423         if (ps_state != NL80211_PS_DISABLED && ps_state != NL80211_PS_ENABLED)
8424                 return -EINVAL;
8425
8426         wdev = dev->ieee80211_ptr;
8427
8428         if (!rdev->ops->set_power_mgmt)
8429                 return -EOPNOTSUPP;
8430
8431         state = (ps_state == NL80211_PS_ENABLED) ? true : false;
8432
8433         if (state == wdev->ps)
8434                 return 0;
8435
8436         err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout);
8437         if (!err)
8438                 wdev->ps = state;
8439         return err;
8440 }
8441
8442 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
8443 {
8444         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8445         enum nl80211_ps_state ps_state;
8446         struct wireless_dev *wdev;
8447         struct net_device *dev = info->user_ptr[1];
8448         struct sk_buff *msg;
8449         void *hdr;
8450         int err;
8451
8452         wdev = dev->ieee80211_ptr;
8453
8454         if (!rdev->ops->set_power_mgmt)
8455                 return -EOPNOTSUPP;
8456
8457         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8458         if (!msg)
8459                 return -ENOMEM;
8460
8461         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8462                              NL80211_CMD_GET_POWER_SAVE);
8463         if (!hdr) {
8464                 err = -ENOBUFS;
8465                 goto free_msg;
8466         }
8467
8468         if (wdev->ps)
8469                 ps_state = NL80211_PS_ENABLED;
8470         else
8471                 ps_state = NL80211_PS_DISABLED;
8472
8473         if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state))
8474                 goto nla_put_failure;
8475
8476         genlmsg_end(msg, hdr);
8477         return genlmsg_reply(msg, info);
8478
8479  nla_put_failure:
8480         err = -ENOBUFS;
8481  free_msg:
8482         nlmsg_free(msg);
8483         return err;
8484 }
8485
8486 static const struct nla_policy
8487 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] = {
8488         [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 },
8489         [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
8490         [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
8491         [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 },
8492         [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 },
8493         [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 },
8494 };
8495
8496 static int nl80211_set_cqm_txe(struct genl_info *info,
8497                                u32 rate, u32 pkts, u32 intvl)
8498 {
8499         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8500         struct net_device *dev = info->user_ptr[1];
8501         struct wireless_dev *wdev = dev->ieee80211_ptr;
8502
8503         if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL)
8504                 return -EINVAL;
8505
8506         if (!rdev->ops->set_cqm_txe_config)
8507                 return -EOPNOTSUPP;
8508
8509         if (wdev->iftype != NL80211_IFTYPE_STATION &&
8510             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
8511                 return -EOPNOTSUPP;
8512
8513         return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl);
8514 }
8515
8516 static int nl80211_set_cqm_rssi(struct genl_info *info,
8517                                 s32 threshold, u32 hysteresis)
8518 {
8519         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8520         struct net_device *dev = info->user_ptr[1];
8521         struct wireless_dev *wdev = dev->ieee80211_ptr;
8522
8523         if (threshold > 0)
8524                 return -EINVAL;
8525
8526         /* disabling - hysteresis should also be zero then */
8527         if (threshold == 0)
8528                 hysteresis = 0;
8529
8530         if (!rdev->ops->set_cqm_rssi_config)
8531                 return -EOPNOTSUPP;
8532
8533         if (wdev->iftype != NL80211_IFTYPE_STATION &&
8534             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
8535                 return -EOPNOTSUPP;
8536
8537         return rdev_set_cqm_rssi_config(rdev, dev, threshold, hysteresis);
8538 }
8539
8540 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
8541 {
8542         struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
8543         struct nlattr *cqm;
8544         int err;
8545
8546         cqm = info->attrs[NL80211_ATTR_CQM];
8547         if (!cqm)
8548                 return -EINVAL;
8549
8550         err = nla_parse_nested(attrs, NL80211_ATTR_CQM_MAX, cqm,
8551                                nl80211_attr_cqm_policy);
8552         if (err)
8553                 return err;
8554
8555         if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
8556             attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
8557                 s32 threshold = nla_get_s32(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
8558                 u32 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
8559
8560                 return nl80211_set_cqm_rssi(info, threshold, hysteresis);
8561         }
8562
8563         if (attrs[NL80211_ATTR_CQM_TXE_RATE] &&
8564             attrs[NL80211_ATTR_CQM_TXE_PKTS] &&
8565             attrs[NL80211_ATTR_CQM_TXE_INTVL]) {
8566                 u32 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]);
8567                 u32 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]);
8568                 u32 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]);
8569
8570                 return nl80211_set_cqm_txe(info, rate, pkts, intvl);
8571         }
8572
8573         return -EINVAL;
8574 }
8575
8576 static int nl80211_join_ocb(struct sk_buff *skb, struct genl_info *info)
8577 {
8578         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8579         struct net_device *dev = info->user_ptr[1];
8580         struct ocb_setup setup = {};
8581         int err;
8582
8583         err = nl80211_parse_chandef(rdev, info, &setup.chandef);
8584         if (err)
8585                 return err;
8586
8587         return cfg80211_join_ocb(rdev, dev, &setup);
8588 }
8589
8590 static int nl80211_leave_ocb(struct sk_buff *skb, struct genl_info *info)
8591 {
8592         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8593         struct net_device *dev = info->user_ptr[1];
8594
8595         return cfg80211_leave_ocb(rdev, dev);
8596 }
8597
8598 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
8599 {
8600         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8601         struct net_device *dev = info->user_ptr[1];
8602         struct mesh_config cfg;
8603         struct mesh_setup setup;
8604         int err;
8605
8606         /* start with default */
8607         memcpy(&cfg, &default_mesh_config, sizeof(cfg));
8608         memcpy(&setup, &default_mesh_setup, sizeof(setup));
8609
8610         if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
8611                 /* and parse parameters if given */
8612                 err = nl80211_parse_mesh_config(info, &cfg, NULL);
8613                 if (err)
8614                         return err;
8615         }
8616
8617         if (!info->attrs[NL80211_ATTR_MESH_ID] ||
8618             !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
8619                 return -EINVAL;
8620
8621         setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
8622         setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
8623
8624         if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
8625             !nl80211_parse_mcast_rate(rdev, setup.mcast_rate,
8626                             nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
8627                         return -EINVAL;
8628
8629         if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
8630                 setup.beacon_interval =
8631                         nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
8632                 if (setup.beacon_interval < 10 ||
8633                     setup.beacon_interval > 10000)
8634                         return -EINVAL;
8635         }
8636
8637         if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
8638                 setup.dtim_period =
8639                         nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
8640                 if (setup.dtim_period < 1 || setup.dtim_period > 100)
8641                         return -EINVAL;
8642         }
8643
8644         if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
8645                 /* parse additional setup parameters if given */
8646                 err = nl80211_parse_mesh_setup(info, &setup);
8647                 if (err)
8648                         return err;
8649         }
8650
8651         if (setup.user_mpm)
8652                 cfg.auto_open_plinks = false;
8653
8654         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
8655                 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
8656                 if (err)
8657                         return err;
8658         } else {
8659                 /* cfg80211_join_mesh() will sort it out */
8660                 setup.chandef.chan = NULL;
8661         }
8662
8663         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
8664                 u8 *rates = nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
8665                 int n_rates =
8666                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
8667                 struct ieee80211_supported_band *sband;
8668
8669                 if (!setup.chandef.chan)
8670                         return -EINVAL;
8671
8672                 sband = rdev->wiphy.bands[setup.chandef.chan->band];
8673
8674                 err = ieee80211_get_ratemask(sband, rates, n_rates,
8675                                              &setup.basic_rates);
8676                 if (err)
8677                         return err;
8678         }
8679
8680         return cfg80211_join_mesh(rdev, dev, &setup, &cfg);
8681 }
8682
8683 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
8684 {
8685         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8686         struct net_device *dev = info->user_ptr[1];
8687
8688         return cfg80211_leave_mesh(rdev, dev);
8689 }
8690
8691 #ifdef CONFIG_PM
8692 static int nl80211_send_wowlan_patterns(struct sk_buff *msg,
8693                                         struct cfg80211_registered_device *rdev)
8694 {
8695         struct cfg80211_wowlan *wowlan = rdev->wiphy.wowlan_config;
8696         struct nlattr *nl_pats, *nl_pat;
8697         int i, pat_len;
8698
8699         if (!wowlan->n_patterns)
8700                 return 0;
8701
8702         nl_pats = nla_nest_start(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN);
8703         if (!nl_pats)
8704                 return -ENOBUFS;
8705
8706         for (i = 0; i < wowlan->n_patterns; i++) {
8707                 nl_pat = nla_nest_start(msg, i + 1);
8708                 if (!nl_pat)
8709                         return -ENOBUFS;
8710                 pat_len = wowlan->patterns[i].pattern_len;
8711                 if (nla_put(msg, NL80211_PKTPAT_MASK, DIV_ROUND_UP(pat_len, 8),
8712                             wowlan->patterns[i].mask) ||
8713                     nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
8714                             wowlan->patterns[i].pattern) ||
8715                     nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
8716                                 wowlan->patterns[i].pkt_offset))
8717                         return -ENOBUFS;
8718                 nla_nest_end(msg, nl_pat);
8719         }
8720         nla_nest_end(msg, nl_pats);
8721
8722         return 0;
8723 }
8724
8725 static int nl80211_send_wowlan_tcp(struct sk_buff *msg,
8726                                    struct cfg80211_wowlan_tcp *tcp)
8727 {
8728         struct nlattr *nl_tcp;
8729
8730         if (!tcp)
8731                 return 0;
8732
8733         nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
8734         if (!nl_tcp)
8735                 return -ENOBUFS;
8736
8737         if (nla_put_be32(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) ||
8738             nla_put_be32(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) ||
8739             nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) ||
8740             nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) ||
8741             nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) ||
8742             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
8743                     tcp->payload_len, tcp->payload) ||
8744             nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
8745                         tcp->data_interval) ||
8746             nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
8747                     tcp->wake_len, tcp->wake_data) ||
8748             nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK,
8749                     DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask))
8750                 return -ENOBUFS;
8751
8752         if (tcp->payload_seq.len &&
8753             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ,
8754                     sizeof(tcp->payload_seq), &tcp->payload_seq))
8755                 return -ENOBUFS;
8756
8757         if (tcp->payload_tok.len &&
8758             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
8759                     sizeof(tcp->payload_tok) + tcp->tokens_size,
8760                     &tcp->payload_tok))
8761                 return -ENOBUFS;
8762
8763         nla_nest_end(msg, nl_tcp);
8764
8765         return 0;
8766 }
8767
8768 static int nl80211_send_wowlan_nd(struct sk_buff *msg,
8769                                   struct cfg80211_sched_scan_request *req)
8770 {
8771         struct nlattr *nd, *freqs, *matches, *match;
8772         int i;
8773
8774         if (!req)
8775                 return 0;
8776
8777         nd = nla_nest_start(msg, NL80211_WOWLAN_TRIG_NET_DETECT);
8778         if (!nd)
8779                 return -ENOBUFS;
8780
8781         if (nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_INTERVAL, req->interval))
8782                 return -ENOBUFS;
8783
8784         freqs = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
8785         if (!freqs)
8786                 return -ENOBUFS;
8787
8788         for (i = 0; i < req->n_channels; i++)
8789                 nla_put_u32(msg, i, req->channels[i]->center_freq);
8790
8791         nla_nest_end(msg, freqs);
8792
8793         if (req->n_match_sets) {
8794                 matches = nla_nest_start(msg, NL80211_ATTR_SCHED_SCAN_MATCH);
8795                 for (i = 0; i < req->n_match_sets; i++) {
8796                         match = nla_nest_start(msg, i);
8797                         nla_put(msg, NL80211_SCHED_SCAN_MATCH_ATTR_SSID,
8798                                 req->match_sets[i].ssid.ssid_len,
8799                                 req->match_sets[i].ssid.ssid);
8800                         nla_nest_end(msg, match);
8801                 }
8802                 nla_nest_end(msg, matches);
8803         }
8804
8805         nla_nest_end(msg, nd);
8806
8807         return 0;
8808 }
8809
8810 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
8811 {
8812         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8813         struct sk_buff *msg;
8814         void *hdr;
8815         u32 size = NLMSG_DEFAULT_SIZE;
8816
8817         if (!rdev->wiphy.wowlan)
8818                 return -EOPNOTSUPP;
8819
8820         if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) {
8821                 /* adjust size to have room for all the data */
8822                 size += rdev->wiphy.wowlan_config->tcp->tokens_size +
8823                         rdev->wiphy.wowlan_config->tcp->payload_len +
8824                         rdev->wiphy.wowlan_config->tcp->wake_len +
8825                         rdev->wiphy.wowlan_config->tcp->wake_len / 8;
8826         }
8827
8828         msg = nlmsg_new(size, GFP_KERNEL);
8829         if (!msg)
8830                 return -ENOMEM;
8831
8832         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8833                              NL80211_CMD_GET_WOWLAN);
8834         if (!hdr)
8835                 goto nla_put_failure;
8836
8837         if (rdev->wiphy.wowlan_config) {
8838                 struct nlattr *nl_wowlan;
8839
8840                 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
8841                 if (!nl_wowlan)
8842                         goto nla_put_failure;
8843
8844                 if ((rdev->wiphy.wowlan_config->any &&
8845                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
8846                     (rdev->wiphy.wowlan_config->disconnect &&
8847                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
8848                     (rdev->wiphy.wowlan_config->magic_pkt &&
8849                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
8850                     (rdev->wiphy.wowlan_config->gtk_rekey_failure &&
8851                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
8852                     (rdev->wiphy.wowlan_config->eap_identity_req &&
8853                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
8854                     (rdev->wiphy.wowlan_config->four_way_handshake &&
8855                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
8856                     (rdev->wiphy.wowlan_config->rfkill_release &&
8857                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
8858                         goto nla_put_failure;
8859
8860                 if (nl80211_send_wowlan_patterns(msg, rdev))
8861                         goto nla_put_failure;
8862
8863                 if (nl80211_send_wowlan_tcp(msg,
8864                                             rdev->wiphy.wowlan_config->tcp))
8865                         goto nla_put_failure;
8866
8867                 if (nl80211_send_wowlan_nd(
8868                             msg,
8869                             rdev->wiphy.wowlan_config->nd_config))
8870                         goto nla_put_failure;
8871
8872                 nla_nest_end(msg, nl_wowlan);
8873         }
8874
8875         genlmsg_end(msg, hdr);
8876         return genlmsg_reply(msg, info);
8877
8878 nla_put_failure:
8879         nlmsg_free(msg);
8880         return -ENOBUFS;
8881 }
8882
8883 static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev,
8884                                     struct nlattr *attr,
8885                                     struct cfg80211_wowlan *trig)
8886 {
8887         struct nlattr *tb[NUM_NL80211_WOWLAN_TCP];
8888         struct cfg80211_wowlan_tcp *cfg;
8889         struct nl80211_wowlan_tcp_data_token *tok = NULL;
8890         struct nl80211_wowlan_tcp_data_seq *seq = NULL;
8891         u32 size;
8892         u32 data_size, wake_size, tokens_size = 0, wake_mask_size;
8893         int err, port;
8894
8895         if (!rdev->wiphy.wowlan->tcp)
8896                 return -EINVAL;
8897
8898         err = nla_parse(tb, MAX_NL80211_WOWLAN_TCP,
8899                         nla_data(attr), nla_len(attr),
8900                         nl80211_wowlan_tcp_policy);
8901         if (err)
8902                 return err;
8903
8904         if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] ||
8905             !tb[NL80211_WOWLAN_TCP_DST_IPV4] ||
8906             !tb[NL80211_WOWLAN_TCP_DST_MAC] ||
8907             !tb[NL80211_WOWLAN_TCP_DST_PORT] ||
8908             !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] ||
8909             !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] ||
8910             !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] ||
8911             !tb[NL80211_WOWLAN_TCP_WAKE_MASK])
8912                 return -EINVAL;
8913
8914         data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]);
8915         if (data_size > rdev->wiphy.wowlan->tcp->data_payload_max)
8916                 return -EINVAL;
8917
8918         if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) >
8919                         rdev->wiphy.wowlan->tcp->data_interval_max ||
8920             nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0)
8921                 return -EINVAL;
8922
8923         wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]);
8924         if (wake_size > rdev->wiphy.wowlan->tcp->wake_payload_max)
8925                 return -EINVAL;
8926
8927         wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]);
8928         if (wake_mask_size != DIV_ROUND_UP(wake_size, 8))
8929                 return -EINVAL;
8930
8931         if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) {
8932                 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
8933
8934                 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
8935                 tokens_size = tokln - sizeof(*tok);
8936
8937                 if (!tok->len || tokens_size % tok->len)
8938                         return -EINVAL;
8939                 if (!rdev->wiphy.wowlan->tcp->tok)
8940                         return -EINVAL;
8941                 if (tok->len > rdev->wiphy.wowlan->tcp->tok->max_len)
8942                         return -EINVAL;
8943                 if (tok->len < rdev->wiphy.wowlan->tcp->tok->min_len)
8944                         return -EINVAL;
8945                 if (tokens_size > rdev->wiphy.wowlan->tcp->tok->bufsize)
8946                         return -EINVAL;
8947                 if (tok->offset + tok->len > data_size)
8948                         return -EINVAL;
8949         }
8950
8951         if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) {
8952                 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]);
8953                 if (!rdev->wiphy.wowlan->tcp->seq)
8954                         return -EINVAL;
8955                 if (seq->len == 0 || seq->len > 4)
8956                         return -EINVAL;
8957                 if (seq->len + seq->offset > data_size)
8958                         return -EINVAL;
8959         }
8960
8961         size = sizeof(*cfg);
8962         size += data_size;
8963         size += wake_size + wake_mask_size;
8964         size += tokens_size;
8965
8966         cfg = kzalloc(size, GFP_KERNEL);
8967         if (!cfg)
8968                 return -ENOMEM;
8969         cfg->src = nla_get_be32(tb[NL80211_WOWLAN_TCP_SRC_IPV4]);
8970         cfg->dst = nla_get_be32(tb[NL80211_WOWLAN_TCP_DST_IPV4]);
8971         memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]),
8972                ETH_ALEN);
8973         if (tb[NL80211_WOWLAN_TCP_SRC_PORT])
8974                 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]);
8975         else
8976                 port = 0;
8977 #ifdef CONFIG_INET
8978         /* allocate a socket and port for it and use it */
8979         err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM,
8980                             IPPROTO_TCP, &cfg->sock, 1);
8981         if (err) {
8982                 kfree(cfg);
8983                 return err;
8984         }
8985         if (inet_csk_get_port(cfg->sock->sk, port)) {
8986                 sock_release(cfg->sock);
8987                 kfree(cfg);
8988                 return -EADDRINUSE;
8989         }
8990         cfg->src_port = inet_sk(cfg->sock->sk)->inet_num;
8991 #else
8992         if (!port) {
8993                 kfree(cfg);
8994                 return -EINVAL;
8995         }
8996         cfg->src_port = port;
8997 #endif
8998
8999         cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]);
9000         cfg->payload_len = data_size;
9001         cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size;
9002         memcpy((void *)cfg->payload,
9003                nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]),
9004                data_size);
9005         if (seq)
9006                 cfg->payload_seq = *seq;
9007         cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]);
9008         cfg->wake_len = wake_size;
9009         cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size;
9010         memcpy((void *)cfg->wake_data,
9011                nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]),
9012                wake_size);
9013         cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size +
9014                          data_size + wake_size;
9015         memcpy((void *)cfg->wake_mask,
9016                nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]),
9017                wake_mask_size);
9018         if (tok) {
9019                 cfg->tokens_size = tokens_size;
9020                 memcpy(&cfg->payload_tok, tok, sizeof(*tok) + tokens_size);
9021         }
9022
9023         trig->tcp = cfg;
9024
9025         return 0;
9026 }
9027
9028 static int nl80211_parse_wowlan_nd(struct cfg80211_registered_device *rdev,
9029                                    const struct wiphy_wowlan_support *wowlan,
9030                                    struct nlattr *attr,
9031                                    struct cfg80211_wowlan *trig)
9032 {
9033         struct nlattr **tb;
9034         int err;
9035
9036         tb = kzalloc(NUM_NL80211_ATTR * sizeof(*tb), GFP_KERNEL);
9037         if (!tb)
9038                 return -ENOMEM;
9039
9040         if (!(wowlan->flags & WIPHY_WOWLAN_NET_DETECT)) {
9041                 err = -EOPNOTSUPP;
9042                 goto out;
9043         }
9044
9045         err = nla_parse(tb, NL80211_ATTR_MAX,
9046                         nla_data(attr), nla_len(attr),
9047                         nl80211_policy);
9048         if (err)
9049                 goto out;
9050
9051         trig->nd_config = nl80211_parse_sched_scan(&rdev->wiphy, NULL, tb);
9052         err = PTR_ERR_OR_ZERO(trig->nd_config);
9053         if (err)
9054                 trig->nd_config = NULL;
9055
9056 out:
9057         kfree(tb);
9058         return err;
9059 }
9060
9061 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
9062 {
9063         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9064         struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
9065         struct cfg80211_wowlan new_triggers = {};
9066         struct cfg80211_wowlan *ntrig;
9067         const struct wiphy_wowlan_support *wowlan = rdev->wiphy.wowlan;
9068         int err, i;
9069         bool prev_enabled = rdev->wiphy.wowlan_config;
9070
9071         if (!wowlan)
9072                 return -EOPNOTSUPP;
9073
9074         if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) {
9075                 cfg80211_rdev_free_wowlan(rdev);
9076                 rdev->wiphy.wowlan_config = NULL;
9077                 goto set_wakeup;
9078         }
9079
9080         err = nla_parse(tb, MAX_NL80211_WOWLAN_TRIG,
9081                         nla_data(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
9082                         nla_len(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
9083                         nl80211_wowlan_policy);
9084         if (err)
9085                 return err;
9086
9087         if (tb[NL80211_WOWLAN_TRIG_ANY]) {
9088                 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
9089                         return -EINVAL;
9090                 new_triggers.any = true;
9091         }
9092
9093         if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
9094                 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
9095                         return -EINVAL;
9096                 new_triggers.disconnect = true;
9097         }
9098
9099         if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
9100                 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
9101                         return -EINVAL;
9102                 new_triggers.magic_pkt = true;
9103         }
9104
9105         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
9106                 return -EINVAL;
9107
9108         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
9109                 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
9110                         return -EINVAL;
9111                 new_triggers.gtk_rekey_failure = true;
9112         }
9113
9114         if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
9115                 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
9116                         return -EINVAL;
9117                 new_triggers.eap_identity_req = true;
9118         }
9119
9120         if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
9121                 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
9122                         return -EINVAL;
9123                 new_triggers.four_way_handshake = true;
9124         }
9125
9126         if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
9127                 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
9128                         return -EINVAL;
9129                 new_triggers.rfkill_release = true;
9130         }
9131
9132         if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
9133                 struct nlattr *pat;
9134                 int n_patterns = 0;
9135                 int rem, pat_len, mask_len, pkt_offset;
9136                 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
9137
9138                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
9139                                     rem)
9140                         n_patterns++;
9141                 if (n_patterns > wowlan->n_patterns)
9142                         return -EINVAL;
9143
9144                 new_triggers.patterns = kcalloc(n_patterns,
9145                                                 sizeof(new_triggers.patterns[0]),
9146                                                 GFP_KERNEL);
9147                 if (!new_triggers.patterns)
9148                         return -ENOMEM;
9149
9150                 new_triggers.n_patterns = n_patterns;
9151                 i = 0;
9152
9153                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
9154                                     rem) {
9155                         u8 *mask_pat;
9156
9157                         nla_parse(pat_tb, MAX_NL80211_PKTPAT, nla_data(pat),
9158                                   nla_len(pat), NULL);
9159                         err = -EINVAL;
9160                         if (!pat_tb[NL80211_PKTPAT_MASK] ||
9161                             !pat_tb[NL80211_PKTPAT_PATTERN])
9162                                 goto error;
9163                         pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
9164                         mask_len = DIV_ROUND_UP(pat_len, 8);
9165                         if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
9166                                 goto error;
9167                         if (pat_len > wowlan->pattern_max_len ||
9168                             pat_len < wowlan->pattern_min_len)
9169                                 goto error;
9170
9171                         if (!pat_tb[NL80211_PKTPAT_OFFSET])
9172                                 pkt_offset = 0;
9173                         else
9174                                 pkt_offset = nla_get_u32(
9175                                         pat_tb[NL80211_PKTPAT_OFFSET]);
9176                         if (pkt_offset > wowlan->max_pkt_offset)
9177                                 goto error;
9178                         new_triggers.patterns[i].pkt_offset = pkt_offset;
9179
9180                         mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
9181                         if (!mask_pat) {
9182                                 err = -ENOMEM;
9183                                 goto error;
9184                         }
9185                         new_triggers.patterns[i].mask = mask_pat;
9186                         memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
9187                                mask_len);
9188                         mask_pat += mask_len;
9189                         new_triggers.patterns[i].pattern = mask_pat;
9190                         new_triggers.patterns[i].pattern_len = pat_len;
9191                         memcpy(mask_pat,
9192                                nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
9193                                pat_len);
9194                         i++;
9195                 }
9196         }
9197
9198         if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) {
9199                 err = nl80211_parse_wowlan_tcp(
9200                         rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION],
9201                         &new_triggers);
9202                 if (err)
9203                         goto error;
9204         }
9205
9206         if (tb[NL80211_WOWLAN_TRIG_NET_DETECT]) {
9207                 err = nl80211_parse_wowlan_nd(
9208                         rdev, wowlan, tb[NL80211_WOWLAN_TRIG_NET_DETECT],
9209                         &new_triggers);
9210                 if (err)
9211                         goto error;
9212         }
9213
9214         ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL);
9215         if (!ntrig) {
9216                 err = -ENOMEM;
9217                 goto error;
9218         }
9219         cfg80211_rdev_free_wowlan(rdev);
9220         rdev->wiphy.wowlan_config = ntrig;
9221
9222  set_wakeup:
9223         if (rdev->ops->set_wakeup &&
9224             prev_enabled != !!rdev->wiphy.wowlan_config)
9225                 rdev_set_wakeup(rdev, rdev->wiphy.wowlan_config);
9226
9227         return 0;
9228  error:
9229         for (i = 0; i < new_triggers.n_patterns; i++)
9230                 kfree(new_triggers.patterns[i].mask);
9231         kfree(new_triggers.patterns);
9232         if (new_triggers.tcp && new_triggers.tcp->sock)
9233                 sock_release(new_triggers.tcp->sock);
9234         kfree(new_triggers.tcp);
9235         return err;
9236 }
9237 #endif
9238
9239 static int nl80211_send_coalesce_rules(struct sk_buff *msg,
9240                                        struct cfg80211_registered_device *rdev)
9241 {
9242         struct nlattr *nl_pats, *nl_pat, *nl_rule, *nl_rules;
9243         int i, j, pat_len;
9244         struct cfg80211_coalesce_rules *rule;
9245
9246         if (!rdev->coalesce->n_rules)
9247                 return 0;
9248
9249         nl_rules = nla_nest_start(msg, NL80211_ATTR_COALESCE_RULE);
9250         if (!nl_rules)
9251                 return -ENOBUFS;
9252
9253         for (i = 0; i < rdev->coalesce->n_rules; i++) {
9254                 nl_rule = nla_nest_start(msg, i + 1);
9255                 if (!nl_rule)
9256                         return -ENOBUFS;
9257
9258                 rule = &rdev->coalesce->rules[i];
9259                 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_DELAY,
9260                                 rule->delay))
9261                         return -ENOBUFS;
9262
9263                 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_CONDITION,
9264                                 rule->condition))
9265                         return -ENOBUFS;
9266
9267                 nl_pats = nla_nest_start(msg,
9268                                 NL80211_ATTR_COALESCE_RULE_PKT_PATTERN);
9269                 if (!nl_pats)
9270                         return -ENOBUFS;
9271
9272                 for (j = 0; j < rule->n_patterns; j++) {
9273                         nl_pat = nla_nest_start(msg, j + 1);
9274                         if (!nl_pat)
9275                                 return -ENOBUFS;
9276                         pat_len = rule->patterns[j].pattern_len;
9277                         if (nla_put(msg, NL80211_PKTPAT_MASK,
9278                                     DIV_ROUND_UP(pat_len, 8),
9279                                     rule->patterns[j].mask) ||
9280                             nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
9281                                     rule->patterns[j].pattern) ||
9282                             nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
9283                                         rule->patterns[j].pkt_offset))
9284                                 return -ENOBUFS;
9285                         nla_nest_end(msg, nl_pat);
9286                 }
9287                 nla_nest_end(msg, nl_pats);
9288                 nla_nest_end(msg, nl_rule);
9289         }
9290         nla_nest_end(msg, nl_rules);
9291
9292         return 0;
9293 }
9294
9295 static int nl80211_get_coalesce(struct sk_buff *skb, struct genl_info *info)
9296 {
9297         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9298         struct sk_buff *msg;
9299         void *hdr;
9300
9301         if (!rdev->wiphy.coalesce)
9302                 return -EOPNOTSUPP;
9303
9304         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9305         if (!msg)
9306                 return -ENOMEM;
9307
9308         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9309                              NL80211_CMD_GET_COALESCE);
9310         if (!hdr)
9311                 goto nla_put_failure;
9312
9313         if (rdev->coalesce && nl80211_send_coalesce_rules(msg, rdev))
9314                 goto nla_put_failure;
9315
9316         genlmsg_end(msg, hdr);
9317         return genlmsg_reply(msg, info);
9318
9319 nla_put_failure:
9320         nlmsg_free(msg);
9321         return -ENOBUFS;
9322 }
9323
9324 void cfg80211_rdev_free_coalesce(struct cfg80211_registered_device *rdev)
9325 {
9326         struct cfg80211_coalesce *coalesce = rdev->coalesce;
9327         int i, j;
9328         struct cfg80211_coalesce_rules *rule;
9329
9330         if (!coalesce)
9331                 return;
9332
9333         for (i = 0; i < coalesce->n_rules; i++) {
9334                 rule = &coalesce->rules[i];
9335                 for (j = 0; j < rule->n_patterns; j++)
9336                         kfree(rule->patterns[j].mask);
9337                 kfree(rule->patterns);
9338         }
9339         kfree(coalesce->rules);
9340         kfree(coalesce);
9341         rdev->coalesce = NULL;
9342 }
9343
9344 static int nl80211_parse_coalesce_rule(struct cfg80211_registered_device *rdev,
9345                                        struct nlattr *rule,
9346                                        struct cfg80211_coalesce_rules *new_rule)
9347 {
9348         int err, i;
9349         const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
9350         struct nlattr *tb[NUM_NL80211_ATTR_COALESCE_RULE], *pat;
9351         int rem, pat_len, mask_len, pkt_offset, n_patterns = 0;
9352         struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
9353
9354         err = nla_parse(tb, NL80211_ATTR_COALESCE_RULE_MAX, nla_data(rule),
9355                         nla_len(rule), nl80211_coalesce_policy);
9356         if (err)
9357                 return err;
9358
9359         if (tb[NL80211_ATTR_COALESCE_RULE_DELAY])
9360                 new_rule->delay =
9361                         nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_DELAY]);
9362         if (new_rule->delay > coalesce->max_delay)
9363                 return -EINVAL;
9364
9365         if (tb[NL80211_ATTR_COALESCE_RULE_CONDITION])
9366                 new_rule->condition =
9367                         nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_CONDITION]);
9368         if (new_rule->condition != NL80211_COALESCE_CONDITION_MATCH &&
9369             new_rule->condition != NL80211_COALESCE_CONDITION_NO_MATCH)
9370                 return -EINVAL;
9371
9372         if (!tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN])
9373                 return -EINVAL;
9374
9375         nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
9376                             rem)
9377                 n_patterns++;
9378         if (n_patterns > coalesce->n_patterns)
9379                 return -EINVAL;
9380
9381         new_rule->patterns = kcalloc(n_patterns, sizeof(new_rule->patterns[0]),
9382                                      GFP_KERNEL);
9383         if (!new_rule->patterns)
9384                 return -ENOMEM;
9385
9386         new_rule->n_patterns = n_patterns;
9387         i = 0;
9388
9389         nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
9390                             rem) {
9391                 u8 *mask_pat;
9392
9393                 nla_parse(pat_tb, MAX_NL80211_PKTPAT, nla_data(pat),
9394                           nla_len(pat), NULL);
9395                 if (!pat_tb[NL80211_PKTPAT_MASK] ||
9396                     !pat_tb[NL80211_PKTPAT_PATTERN])
9397                         return -EINVAL;
9398                 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
9399                 mask_len = DIV_ROUND_UP(pat_len, 8);
9400                 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
9401                         return -EINVAL;
9402                 if (pat_len > coalesce->pattern_max_len ||
9403                     pat_len < coalesce->pattern_min_len)
9404                         return -EINVAL;
9405
9406                 if (!pat_tb[NL80211_PKTPAT_OFFSET])
9407                         pkt_offset = 0;
9408                 else
9409                         pkt_offset = nla_get_u32(pat_tb[NL80211_PKTPAT_OFFSET]);
9410                 if (pkt_offset > coalesce->max_pkt_offset)
9411                         return -EINVAL;
9412                 new_rule->patterns[i].pkt_offset = pkt_offset;
9413
9414                 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
9415                 if (!mask_pat)
9416                         return -ENOMEM;
9417
9418                 new_rule->patterns[i].mask = mask_pat;
9419                 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
9420                        mask_len);
9421
9422                 mask_pat += mask_len;
9423                 new_rule->patterns[i].pattern = mask_pat;
9424                 new_rule->patterns[i].pattern_len = pat_len;
9425                 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
9426                        pat_len);
9427                 i++;
9428         }
9429
9430         return 0;
9431 }
9432
9433 static int nl80211_set_coalesce(struct sk_buff *skb, struct genl_info *info)
9434 {
9435         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9436         const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
9437         struct cfg80211_coalesce new_coalesce = {};
9438         struct cfg80211_coalesce *n_coalesce;
9439         int err, rem_rule, n_rules = 0, i, j;
9440         struct nlattr *rule;
9441         struct cfg80211_coalesce_rules *tmp_rule;
9442
9443         if (!rdev->wiphy.coalesce || !rdev->ops->set_coalesce)
9444                 return -EOPNOTSUPP;
9445
9446         if (!info->attrs[NL80211_ATTR_COALESCE_RULE]) {
9447                 cfg80211_rdev_free_coalesce(rdev);
9448                 rdev->ops->set_coalesce(&rdev->wiphy, NULL);
9449                 return 0;
9450         }
9451
9452         nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
9453                             rem_rule)
9454                 n_rules++;
9455         if (n_rules > coalesce->n_rules)
9456                 return -EINVAL;
9457
9458         new_coalesce.rules = kcalloc(n_rules, sizeof(new_coalesce.rules[0]),
9459                                      GFP_KERNEL);
9460         if (!new_coalesce.rules)
9461                 return -ENOMEM;
9462
9463         new_coalesce.n_rules = n_rules;
9464         i = 0;
9465
9466         nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
9467                             rem_rule) {
9468                 err = nl80211_parse_coalesce_rule(rdev, rule,
9469                                                   &new_coalesce.rules[i]);
9470                 if (err)
9471                         goto error;
9472
9473                 i++;
9474         }
9475
9476         err = rdev->ops->set_coalesce(&rdev->wiphy, &new_coalesce);
9477         if (err)
9478                 goto error;
9479
9480         n_coalesce = kmemdup(&new_coalesce, sizeof(new_coalesce), GFP_KERNEL);
9481         if (!n_coalesce) {
9482                 err = -ENOMEM;
9483                 goto error;
9484         }
9485         cfg80211_rdev_free_coalesce(rdev);
9486         rdev->coalesce = n_coalesce;
9487
9488         return 0;
9489 error:
9490         for (i = 0; i < new_coalesce.n_rules; i++) {
9491                 tmp_rule = &new_coalesce.rules[i];
9492                 for (j = 0; j < tmp_rule->n_patterns; j++)
9493                         kfree(tmp_rule->patterns[j].mask);
9494                 kfree(tmp_rule->patterns);
9495         }
9496         kfree(new_coalesce.rules);
9497
9498         return err;
9499 }
9500
9501 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
9502 {
9503         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9504         struct net_device *dev = info->user_ptr[1];
9505         struct wireless_dev *wdev = dev->ieee80211_ptr;
9506         struct nlattr *tb[NUM_NL80211_REKEY_DATA];
9507         struct cfg80211_gtk_rekey_data rekey_data;
9508         int err;
9509
9510         if (!info->attrs[NL80211_ATTR_REKEY_DATA])
9511                 return -EINVAL;
9512
9513         err = nla_parse(tb, MAX_NL80211_REKEY_DATA,
9514                         nla_data(info->attrs[NL80211_ATTR_REKEY_DATA]),
9515                         nla_len(info->attrs[NL80211_ATTR_REKEY_DATA]),
9516                         nl80211_rekey_policy);
9517         if (err)
9518                 return err;
9519
9520         if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN)
9521                 return -ERANGE;
9522         if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN)
9523                 return -ERANGE;
9524         if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN)
9525                 return -ERANGE;
9526
9527         rekey_data.kek = nla_data(tb[NL80211_REKEY_DATA_KEK]);
9528         rekey_data.kck = nla_data(tb[NL80211_REKEY_DATA_KCK]);
9529         rekey_data.replay_ctr = nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]);
9530
9531         wdev_lock(wdev);
9532         if (!wdev->current_bss) {
9533                 err = -ENOTCONN;
9534                 goto out;
9535         }
9536
9537         if (!rdev->ops->set_rekey_data) {
9538                 err = -EOPNOTSUPP;
9539                 goto out;
9540         }
9541
9542         err = rdev_set_rekey_data(rdev, dev, &rekey_data);
9543  out:
9544         wdev_unlock(wdev);
9545         return err;
9546 }
9547
9548 static int nl80211_register_unexpected_frame(struct sk_buff *skb,
9549                                              struct genl_info *info)
9550 {
9551         struct net_device *dev = info->user_ptr[1];
9552         struct wireless_dev *wdev = dev->ieee80211_ptr;
9553
9554         if (wdev->iftype != NL80211_IFTYPE_AP &&
9555             wdev->iftype != NL80211_IFTYPE_P2P_GO)
9556                 return -EINVAL;
9557
9558         if (wdev->ap_unexpected_nlportid)
9559                 return -EBUSY;
9560
9561         wdev->ap_unexpected_nlportid = info->snd_portid;
9562         return 0;
9563 }
9564
9565 static int nl80211_probe_client(struct sk_buff *skb,
9566                                 struct genl_info *info)
9567 {
9568         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9569         struct net_device *dev = info->user_ptr[1];
9570         struct wireless_dev *wdev = dev->ieee80211_ptr;
9571         struct sk_buff *msg;
9572         void *hdr;
9573         const u8 *addr;
9574         u64 cookie;
9575         int err;
9576
9577         if (wdev->iftype != NL80211_IFTYPE_AP &&
9578             wdev->iftype != NL80211_IFTYPE_P2P_GO)
9579                 return -EOPNOTSUPP;
9580
9581         if (!info->attrs[NL80211_ATTR_MAC])
9582                 return -EINVAL;
9583
9584         if (!rdev->ops->probe_client)
9585                 return -EOPNOTSUPP;
9586
9587         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9588         if (!msg)
9589                 return -ENOMEM;
9590
9591         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9592                              NL80211_CMD_PROBE_CLIENT);
9593         if (!hdr) {
9594                 err = -ENOBUFS;
9595                 goto free_msg;
9596         }
9597
9598         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
9599
9600         err = rdev_probe_client(rdev, dev, addr, &cookie);
9601         if (err)
9602                 goto free_msg;
9603
9604         if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
9605                 goto nla_put_failure;
9606
9607         genlmsg_end(msg, hdr);
9608
9609         return genlmsg_reply(msg, info);
9610
9611  nla_put_failure:
9612         err = -ENOBUFS;
9613  free_msg:
9614         nlmsg_free(msg);
9615         return err;
9616 }
9617
9618 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
9619 {
9620         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9621         struct cfg80211_beacon_registration *reg, *nreg;
9622         int rv;
9623
9624         if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS))
9625                 return -EOPNOTSUPP;
9626
9627         nreg = kzalloc(sizeof(*nreg), GFP_KERNEL);
9628         if (!nreg)
9629                 return -ENOMEM;
9630
9631         /* First, check if already registered. */
9632         spin_lock_bh(&rdev->beacon_registrations_lock);
9633         list_for_each_entry(reg, &rdev->beacon_registrations, list) {
9634                 if (reg->nlportid == info->snd_portid) {
9635                         rv = -EALREADY;
9636                         goto out_err;
9637                 }
9638         }
9639         /* Add it to the list */
9640         nreg->nlportid = info->snd_portid;
9641         list_add(&nreg->list, &rdev->beacon_registrations);
9642
9643         spin_unlock_bh(&rdev->beacon_registrations_lock);
9644
9645         return 0;
9646 out_err:
9647         spin_unlock_bh(&rdev->beacon_registrations_lock);
9648         kfree(nreg);
9649         return rv;
9650 }
9651
9652 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info)
9653 {
9654         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9655         struct wireless_dev *wdev = info->user_ptr[1];
9656         int err;
9657
9658         if (!rdev->ops->start_p2p_device)
9659                 return -EOPNOTSUPP;
9660
9661         if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
9662                 return -EOPNOTSUPP;
9663
9664         if (wdev->p2p_started)
9665                 return 0;
9666
9667         if (rfkill_blocked(rdev->rfkill))
9668                 return -ERFKILL;
9669
9670         err = rdev_start_p2p_device(rdev, wdev);
9671         if (err)
9672                 return err;
9673
9674         wdev->p2p_started = true;
9675         rdev->opencount++;
9676
9677         return 0;
9678 }
9679
9680 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info)
9681 {
9682         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9683         struct wireless_dev *wdev = info->user_ptr[1];
9684
9685         if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
9686                 return -EOPNOTSUPP;
9687
9688         if (!rdev->ops->stop_p2p_device)
9689                 return -EOPNOTSUPP;
9690
9691         cfg80211_stop_p2p_device(rdev, wdev);
9692
9693         return 0;
9694 }
9695
9696 static int nl80211_get_protocol_features(struct sk_buff *skb,
9697                                          struct genl_info *info)
9698 {
9699         void *hdr;
9700         struct sk_buff *msg;
9701
9702         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9703         if (!msg)
9704                 return -ENOMEM;
9705
9706         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9707                              NL80211_CMD_GET_PROTOCOL_FEATURES);
9708         if (!hdr)
9709                 goto nla_put_failure;
9710
9711         if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES,
9712                         NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP))
9713                 goto nla_put_failure;
9714
9715         genlmsg_end(msg, hdr);
9716         return genlmsg_reply(msg, info);
9717
9718  nla_put_failure:
9719         kfree_skb(msg);
9720         return -ENOBUFS;
9721 }
9722
9723 static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info)
9724 {
9725         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9726         struct cfg80211_update_ft_ies_params ft_params;
9727         struct net_device *dev = info->user_ptr[1];
9728
9729         if (!rdev->ops->update_ft_ies)
9730                 return -EOPNOTSUPP;
9731
9732         if (!info->attrs[NL80211_ATTR_MDID] ||
9733             !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
9734                 return -EINVAL;
9735
9736         memset(&ft_params, 0, sizeof(ft_params));
9737         ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]);
9738         ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9739         ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9740
9741         return rdev_update_ft_ies(rdev, dev, &ft_params);
9742 }
9743
9744 static int nl80211_crit_protocol_start(struct sk_buff *skb,
9745                                        struct genl_info *info)
9746 {
9747         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9748         struct wireless_dev *wdev = info->user_ptr[1];
9749         enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC;
9750         u16 duration;
9751         int ret;
9752
9753         if (!rdev->ops->crit_proto_start)
9754                 return -EOPNOTSUPP;
9755
9756         if (WARN_ON(!rdev->ops->crit_proto_stop))
9757                 return -EINVAL;
9758
9759         if (rdev->crit_proto_nlportid)
9760                 return -EBUSY;
9761
9762         /* determine protocol if provided */
9763         if (info->attrs[NL80211_ATTR_CRIT_PROT_ID])
9764                 proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]);
9765
9766         if (proto >= NUM_NL80211_CRIT_PROTO)
9767                 return -EINVAL;
9768
9769         /* timeout must be provided */
9770         if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION])
9771                 return -EINVAL;
9772
9773         duration =
9774                 nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]);
9775
9776         if (duration > NL80211_CRIT_PROTO_MAX_DURATION)
9777                 return -ERANGE;
9778
9779         ret = rdev_crit_proto_start(rdev, wdev, proto, duration);
9780         if (!ret)
9781                 rdev->crit_proto_nlportid = info->snd_portid;
9782
9783         return ret;
9784 }
9785
9786 static int nl80211_crit_protocol_stop(struct sk_buff *skb,
9787                                       struct genl_info *info)
9788 {
9789         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9790         struct wireless_dev *wdev = info->user_ptr[1];
9791
9792         if (!rdev->ops->crit_proto_stop)
9793                 return -EOPNOTSUPP;
9794
9795         if (rdev->crit_proto_nlportid) {
9796                 rdev->crit_proto_nlportid = 0;
9797                 rdev_crit_proto_stop(rdev, wdev);
9798         }
9799         return 0;
9800 }
9801
9802 static int nl80211_vendor_cmd(struct sk_buff *skb, struct genl_info *info)
9803 {
9804         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9805         struct wireless_dev *wdev =
9806                 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
9807         int i, err;
9808         u32 vid, subcmd;
9809
9810         if (!rdev->wiphy.vendor_commands)
9811                 return -EOPNOTSUPP;
9812
9813         if (IS_ERR(wdev)) {
9814                 err = PTR_ERR(wdev);
9815                 if (err != -EINVAL)
9816                         return err;
9817                 wdev = NULL;
9818         } else if (wdev->wiphy != &rdev->wiphy) {
9819                 return -EINVAL;
9820         }
9821
9822         if (!info->attrs[NL80211_ATTR_VENDOR_ID] ||
9823             !info->attrs[NL80211_ATTR_VENDOR_SUBCMD])
9824                 return -EINVAL;
9825
9826         vid = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_ID]);
9827         subcmd = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_SUBCMD]);
9828         for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
9829                 const struct wiphy_vendor_command *vcmd;
9830                 void *data = NULL;
9831                 int len = 0;
9832
9833                 vcmd = &rdev->wiphy.vendor_commands[i];
9834
9835                 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
9836                         continue;
9837
9838                 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
9839                                    WIPHY_VENDOR_CMD_NEED_NETDEV)) {
9840                         if (!wdev)
9841                                 return -EINVAL;
9842                         if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
9843                             !wdev->netdev)
9844                                 return -EINVAL;
9845
9846                         if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
9847                                 if (wdev->netdev &&
9848                                     !netif_running(wdev->netdev))
9849                                         return -ENETDOWN;
9850                                 if (!wdev->netdev && !wdev->p2p_started)
9851                                         return -ENETDOWN;
9852                         }
9853                 } else {
9854                         wdev = NULL;
9855                 }
9856
9857                 if (info->attrs[NL80211_ATTR_VENDOR_DATA]) {
9858                         data = nla_data(info->attrs[NL80211_ATTR_VENDOR_DATA]);
9859                         len = nla_len(info->attrs[NL80211_ATTR_VENDOR_DATA]);
9860                 }
9861
9862                 rdev->cur_cmd_info = info;
9863                 err = rdev->wiphy.vendor_commands[i].doit(&rdev->wiphy, wdev,
9864                                                           data, len);
9865                 rdev->cur_cmd_info = NULL;
9866                 return err;
9867         }
9868
9869         return -EOPNOTSUPP;
9870 }
9871
9872 struct sk_buff *__cfg80211_alloc_reply_skb(struct wiphy *wiphy,
9873                                            enum nl80211_commands cmd,
9874                                            enum nl80211_attrs attr,
9875                                            int approxlen)
9876 {
9877         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
9878
9879         if (WARN_ON(!rdev->cur_cmd_info))
9880                 return NULL;
9881
9882         return __cfg80211_alloc_vendor_skb(rdev, approxlen,
9883                                            rdev->cur_cmd_info->snd_portid,
9884                                            rdev->cur_cmd_info->snd_seq,
9885                                            cmd, attr, NULL, GFP_KERNEL);
9886 }
9887 EXPORT_SYMBOL(__cfg80211_alloc_reply_skb);
9888
9889 int cfg80211_vendor_cmd_reply(struct sk_buff *skb)
9890 {
9891         struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
9892         void *hdr = ((void **)skb->cb)[1];
9893         struct nlattr *data = ((void **)skb->cb)[2];
9894
9895         /* clear CB data for netlink core to own from now on */
9896         memset(skb->cb, 0, sizeof(skb->cb));
9897
9898         if (WARN_ON(!rdev->cur_cmd_info)) {
9899                 kfree_skb(skb);
9900                 return -EINVAL;
9901         }
9902
9903         nla_nest_end(skb, data);
9904         genlmsg_end(skb, hdr);
9905         return genlmsg_reply(skb, rdev->cur_cmd_info);
9906 }
9907 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_reply);
9908
9909
9910 static int nl80211_set_qos_map(struct sk_buff *skb,
9911                                struct genl_info *info)
9912 {
9913         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9914         struct cfg80211_qos_map *qos_map = NULL;
9915         struct net_device *dev = info->user_ptr[1];
9916         u8 *pos, len, num_des, des_len, des;
9917         int ret;
9918
9919         if (!rdev->ops->set_qos_map)
9920                 return -EOPNOTSUPP;
9921
9922         if (info->attrs[NL80211_ATTR_QOS_MAP]) {
9923                 pos = nla_data(info->attrs[NL80211_ATTR_QOS_MAP]);
9924                 len = nla_len(info->attrs[NL80211_ATTR_QOS_MAP]);
9925
9926                 if (len % 2 || len < IEEE80211_QOS_MAP_LEN_MIN ||
9927                     len > IEEE80211_QOS_MAP_LEN_MAX)
9928                         return -EINVAL;
9929
9930                 qos_map = kzalloc(sizeof(struct cfg80211_qos_map), GFP_KERNEL);
9931                 if (!qos_map)
9932                         return -ENOMEM;
9933
9934                 num_des = (len - IEEE80211_QOS_MAP_LEN_MIN) >> 1;
9935                 if (num_des) {
9936                         des_len = num_des *
9937                                 sizeof(struct cfg80211_dscp_exception);
9938                         memcpy(qos_map->dscp_exception, pos, des_len);
9939                         qos_map->num_des = num_des;
9940                         for (des = 0; des < num_des; des++) {
9941                                 if (qos_map->dscp_exception[des].up > 7) {
9942                                         kfree(qos_map);
9943                                         return -EINVAL;
9944                                 }
9945                         }
9946                         pos += des_len;
9947                 }
9948                 memcpy(qos_map->up, pos, IEEE80211_QOS_MAP_LEN_MIN);
9949         }
9950
9951         wdev_lock(dev->ieee80211_ptr);
9952         ret = nl80211_key_allowed(dev->ieee80211_ptr);
9953         if (!ret)
9954                 ret = rdev_set_qos_map(rdev, dev, qos_map);
9955         wdev_unlock(dev->ieee80211_ptr);
9956
9957         kfree(qos_map);
9958         return ret;
9959 }
9960
9961 static int nl80211_add_tx_ts(struct sk_buff *skb, struct genl_info *info)
9962 {
9963         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9964         struct net_device *dev = info->user_ptr[1];
9965         struct wireless_dev *wdev = dev->ieee80211_ptr;
9966         const u8 *peer;
9967         u8 tsid, up;
9968         u16 admitted_time = 0;
9969         int err;
9970
9971         if (!(rdev->wiphy.features & NL80211_FEATURE_SUPPORTS_WMM_ADMISSION))
9972                 return -EOPNOTSUPP;
9973
9974         if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC] ||
9975             !info->attrs[NL80211_ATTR_USER_PRIO])
9976                 return -EINVAL;
9977
9978         tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
9979         if (tsid >= IEEE80211_NUM_TIDS)
9980                 return -EINVAL;
9981
9982         up = nla_get_u8(info->attrs[NL80211_ATTR_USER_PRIO]);
9983         if (up >= IEEE80211_NUM_UPS)
9984                 return -EINVAL;
9985
9986         /* WMM uses TIDs 0-7 even for TSPEC */
9987         if (tsid >= IEEE80211_FIRST_TSPEC_TSID) {
9988                 /* TODO: handle 802.11 TSPEC/admission control
9989                  * need more attributes for that (e.g. BA session requirement);
9990                  * change the WMM adminssion test above to allow both then
9991                  */
9992                 return -EINVAL;
9993         }
9994
9995         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
9996
9997         if (info->attrs[NL80211_ATTR_ADMITTED_TIME]) {
9998                 admitted_time =
9999                         nla_get_u16(info->attrs[NL80211_ATTR_ADMITTED_TIME]);
10000                 if (!admitted_time)
10001                         return -EINVAL;
10002         }
10003
10004         wdev_lock(wdev);
10005         switch (wdev->iftype) {
10006         case NL80211_IFTYPE_STATION:
10007         case NL80211_IFTYPE_P2P_CLIENT:
10008                 if (wdev->current_bss)
10009                         break;
10010                 err = -ENOTCONN;
10011                 goto out;
10012         default:
10013                 err = -EOPNOTSUPP;
10014                 goto out;
10015         }
10016
10017         err = rdev_add_tx_ts(rdev, dev, tsid, peer, up, admitted_time);
10018
10019  out:
10020         wdev_unlock(wdev);
10021         return err;
10022 }
10023
10024 static int nl80211_del_tx_ts(struct sk_buff *skb, struct genl_info *info)
10025 {
10026         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10027         struct net_device *dev = info->user_ptr[1];
10028         struct wireless_dev *wdev = dev->ieee80211_ptr;
10029         const u8 *peer;
10030         u8 tsid;
10031         int err;
10032
10033         if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC])
10034                 return -EINVAL;
10035
10036         tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
10037         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
10038
10039         wdev_lock(wdev);
10040         err = rdev_del_tx_ts(rdev, dev, tsid, peer);
10041         wdev_unlock(wdev);
10042
10043         return err;
10044 }
10045
10046 static int nl80211_tdls_channel_switch(struct sk_buff *skb,
10047                                        struct genl_info *info)
10048 {
10049         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10050         struct net_device *dev = info->user_ptr[1];
10051         struct wireless_dev *wdev = dev->ieee80211_ptr;
10052         struct cfg80211_chan_def chandef = {};
10053         const u8 *addr;
10054         u8 oper_class;
10055         int err;
10056
10057         if (!rdev->ops->tdls_channel_switch ||
10058             !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
10059                 return -EOPNOTSUPP;
10060
10061         switch (dev->ieee80211_ptr->iftype) {
10062         case NL80211_IFTYPE_STATION:
10063         case NL80211_IFTYPE_P2P_CLIENT:
10064                 break;
10065         default:
10066                 return -EOPNOTSUPP;
10067         }
10068
10069         if (!info->attrs[NL80211_ATTR_MAC] ||
10070             !info->attrs[NL80211_ATTR_OPER_CLASS])
10071                 return -EINVAL;
10072
10073         err = nl80211_parse_chandef(rdev, info, &chandef);
10074         if (err)
10075                 return err;
10076
10077         /*
10078          * Don't allow wide channels on the 2.4Ghz band, as per IEEE802.11-2012
10079          * section 10.22.6.2.1. Disallow 5/10Mhz channels as well for now, the
10080          * specification is not defined for them.
10081          */
10082         if (chandef.chan->band == IEEE80211_BAND_2GHZ &&
10083             chandef.width != NL80211_CHAN_WIDTH_20_NOHT &&
10084             chandef.width != NL80211_CHAN_WIDTH_20)
10085                 return -EINVAL;
10086
10087         /* we will be active on the TDLS link */
10088         if (!cfg80211_reg_can_beacon(&rdev->wiphy, &chandef, wdev->iftype))
10089                 return -EINVAL;
10090
10091         /* don't allow switching to DFS channels */
10092         if (cfg80211_chandef_dfs_required(wdev->wiphy, &chandef, wdev->iftype))
10093                 return -EINVAL;
10094
10095         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
10096         oper_class = nla_get_u8(info->attrs[NL80211_ATTR_OPER_CLASS]);
10097
10098         wdev_lock(wdev);
10099         err = rdev_tdls_channel_switch(rdev, dev, addr, oper_class, &chandef);
10100         wdev_unlock(wdev);
10101
10102         return err;
10103 }
10104
10105 static int nl80211_tdls_cancel_channel_switch(struct sk_buff *skb,
10106                                               struct genl_info *info)
10107 {
10108         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10109         struct net_device *dev = info->user_ptr[1];
10110         struct wireless_dev *wdev = dev->ieee80211_ptr;
10111         const u8 *addr;
10112
10113         if (!rdev->ops->tdls_channel_switch ||
10114             !rdev->ops->tdls_cancel_channel_switch ||
10115             !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
10116                 return -EOPNOTSUPP;
10117
10118         switch (dev->ieee80211_ptr->iftype) {
10119         case NL80211_IFTYPE_STATION:
10120         case NL80211_IFTYPE_P2P_CLIENT:
10121                 break;
10122         default:
10123                 return -EOPNOTSUPP;
10124         }
10125
10126         if (!info->attrs[NL80211_ATTR_MAC])
10127                 return -EINVAL;
10128
10129         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
10130
10131         wdev_lock(wdev);
10132         rdev_tdls_cancel_channel_switch(rdev, dev, addr);
10133         wdev_unlock(wdev);
10134
10135         return 0;
10136 }
10137
10138 #define NL80211_FLAG_NEED_WIPHY         0x01
10139 #define NL80211_FLAG_NEED_NETDEV        0x02
10140 #define NL80211_FLAG_NEED_RTNL          0x04
10141 #define NL80211_FLAG_CHECK_NETDEV_UP    0x08
10142 #define NL80211_FLAG_NEED_NETDEV_UP     (NL80211_FLAG_NEED_NETDEV |\
10143                                          NL80211_FLAG_CHECK_NETDEV_UP)
10144 #define NL80211_FLAG_NEED_WDEV          0x10
10145 /* If a netdev is associated, it must be UP, P2P must be started */
10146 #define NL80211_FLAG_NEED_WDEV_UP       (NL80211_FLAG_NEED_WDEV |\
10147                                          NL80211_FLAG_CHECK_NETDEV_UP)
10148 #define NL80211_FLAG_CLEAR_SKB          0x20
10149
10150 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
10151                             struct genl_info *info)
10152 {
10153         struct cfg80211_registered_device *rdev;
10154         struct wireless_dev *wdev;
10155         struct net_device *dev;
10156         bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
10157
10158         if (rtnl)
10159                 rtnl_lock();
10160
10161         if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
10162                 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
10163                 if (IS_ERR(rdev)) {
10164                         if (rtnl)
10165                                 rtnl_unlock();
10166                         return PTR_ERR(rdev);
10167                 }
10168                 info->user_ptr[0] = rdev;
10169         } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV ||
10170                    ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
10171                 ASSERT_RTNL();
10172
10173                 wdev = __cfg80211_wdev_from_attrs(genl_info_net(info),
10174                                                   info->attrs);
10175                 if (IS_ERR(wdev)) {
10176                         if (rtnl)
10177                                 rtnl_unlock();
10178                         return PTR_ERR(wdev);
10179                 }
10180
10181                 dev = wdev->netdev;
10182                 rdev = wiphy_to_rdev(wdev->wiphy);
10183
10184                 if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
10185                         if (!dev) {
10186                                 if (rtnl)
10187                                         rtnl_unlock();
10188                                 return -EINVAL;
10189                         }
10190
10191                         info->user_ptr[1] = dev;
10192                 } else {
10193                         info->user_ptr[1] = wdev;
10194                 }
10195
10196                 if (dev) {
10197                         if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
10198                             !netif_running(dev)) {
10199                                 if (rtnl)
10200                                         rtnl_unlock();
10201                                 return -ENETDOWN;
10202                         }
10203
10204                         dev_hold(dev);
10205                 } else if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP) {
10206                         if (!wdev->p2p_started) {
10207                                 if (rtnl)
10208                                         rtnl_unlock();
10209                                 return -ENETDOWN;
10210                         }
10211                 }
10212
10213                 info->user_ptr[0] = rdev;
10214         }
10215
10216         return 0;
10217 }
10218
10219 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
10220                               struct genl_info *info)
10221 {
10222         if (info->user_ptr[1]) {
10223                 if (ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
10224                         struct wireless_dev *wdev = info->user_ptr[1];
10225
10226                         if (wdev->netdev)
10227                                 dev_put(wdev->netdev);
10228                 } else {
10229                         dev_put(info->user_ptr[1]);
10230                 }
10231         }
10232
10233         if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
10234                 rtnl_unlock();
10235
10236         /* If needed, clear the netlink message payload from the SKB
10237          * as it might contain key data that shouldn't stick around on
10238          * the heap after the SKB is freed. The netlink message header
10239          * is still needed for further processing, so leave it intact.
10240          */
10241         if (ops->internal_flags & NL80211_FLAG_CLEAR_SKB) {
10242                 struct nlmsghdr *nlh = nlmsg_hdr(skb);
10243
10244                 memset(nlmsg_data(nlh), 0, nlmsg_len(nlh));
10245         }
10246 }
10247
10248 static const struct genl_ops nl80211_ops[] = {
10249         {
10250                 .cmd = NL80211_CMD_GET_WIPHY,
10251                 .doit = nl80211_get_wiphy,
10252                 .dumpit = nl80211_dump_wiphy,
10253                 .done = nl80211_dump_wiphy_done,
10254                 .policy = nl80211_policy,
10255                 /* can be retrieved by unprivileged users */
10256                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10257                                   NL80211_FLAG_NEED_RTNL,
10258         },
10259         {
10260                 .cmd = NL80211_CMD_SET_WIPHY,
10261                 .doit = nl80211_set_wiphy,
10262                 .policy = nl80211_policy,
10263                 .flags = GENL_ADMIN_PERM,
10264                 .internal_flags = NL80211_FLAG_NEED_RTNL,
10265         },
10266         {
10267                 .cmd = NL80211_CMD_GET_INTERFACE,
10268                 .doit = nl80211_get_interface,
10269                 .dumpit = nl80211_dump_interface,
10270                 .policy = nl80211_policy,
10271                 /* can be retrieved by unprivileged users */
10272                 .internal_flags = NL80211_FLAG_NEED_WDEV |
10273                                   NL80211_FLAG_NEED_RTNL,
10274         },
10275         {
10276                 .cmd = NL80211_CMD_SET_INTERFACE,
10277                 .doit = nl80211_set_interface,
10278                 .policy = nl80211_policy,
10279                 .flags = GENL_ADMIN_PERM,
10280                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10281                                   NL80211_FLAG_NEED_RTNL,
10282         },
10283         {
10284                 .cmd = NL80211_CMD_NEW_INTERFACE,
10285                 .doit = nl80211_new_interface,
10286                 .policy = nl80211_policy,
10287                 .flags = GENL_ADMIN_PERM,
10288                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10289                                   NL80211_FLAG_NEED_RTNL,
10290         },
10291         {
10292                 .cmd = NL80211_CMD_DEL_INTERFACE,
10293                 .doit = nl80211_del_interface,
10294                 .policy = nl80211_policy,
10295                 .flags = GENL_ADMIN_PERM,
10296                 .internal_flags = NL80211_FLAG_NEED_WDEV |
10297                                   NL80211_FLAG_NEED_RTNL,
10298         },
10299         {
10300                 .cmd = NL80211_CMD_GET_KEY,
10301                 .doit = nl80211_get_key,
10302                 .policy = nl80211_policy,
10303                 .flags = GENL_ADMIN_PERM,
10304                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10305                                   NL80211_FLAG_NEED_RTNL,
10306         },
10307         {
10308                 .cmd = NL80211_CMD_SET_KEY,
10309                 .doit = nl80211_set_key,
10310                 .policy = nl80211_policy,
10311                 .flags = GENL_ADMIN_PERM,
10312                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10313                                   NL80211_FLAG_NEED_RTNL |
10314                                   NL80211_FLAG_CLEAR_SKB,
10315         },
10316         {
10317                 .cmd = NL80211_CMD_NEW_KEY,
10318                 .doit = nl80211_new_key,
10319                 .policy = nl80211_policy,
10320                 .flags = GENL_ADMIN_PERM,
10321                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10322                                   NL80211_FLAG_NEED_RTNL |
10323                                   NL80211_FLAG_CLEAR_SKB,
10324         },
10325         {
10326                 .cmd = NL80211_CMD_DEL_KEY,
10327                 .doit = nl80211_del_key,
10328                 .policy = nl80211_policy,
10329                 .flags = GENL_ADMIN_PERM,
10330                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10331                                   NL80211_FLAG_NEED_RTNL,
10332         },
10333         {
10334                 .cmd = NL80211_CMD_SET_BEACON,
10335                 .policy = nl80211_policy,
10336                 .flags = GENL_ADMIN_PERM,
10337                 .doit = nl80211_set_beacon,
10338                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10339                                   NL80211_FLAG_NEED_RTNL,
10340         },
10341         {
10342                 .cmd = NL80211_CMD_START_AP,
10343                 .policy = nl80211_policy,
10344                 .flags = GENL_ADMIN_PERM,
10345                 .doit = nl80211_start_ap,
10346                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10347                                   NL80211_FLAG_NEED_RTNL,
10348         },
10349         {
10350                 .cmd = NL80211_CMD_STOP_AP,
10351                 .policy = nl80211_policy,
10352                 .flags = GENL_ADMIN_PERM,
10353                 .doit = nl80211_stop_ap,
10354                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10355                                   NL80211_FLAG_NEED_RTNL,
10356         },
10357         {
10358                 .cmd = NL80211_CMD_GET_STATION,
10359                 .doit = nl80211_get_station,
10360                 .dumpit = nl80211_dump_station,
10361                 .policy = nl80211_policy,
10362                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10363                                   NL80211_FLAG_NEED_RTNL,
10364         },
10365         {
10366                 .cmd = NL80211_CMD_SET_STATION,
10367                 .doit = nl80211_set_station,
10368                 .policy = nl80211_policy,
10369                 .flags = GENL_ADMIN_PERM,
10370                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10371                                   NL80211_FLAG_NEED_RTNL,
10372         },
10373         {
10374                 .cmd = NL80211_CMD_NEW_STATION,
10375                 .doit = nl80211_new_station,
10376                 .policy = nl80211_policy,
10377                 .flags = GENL_ADMIN_PERM,
10378                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10379                                   NL80211_FLAG_NEED_RTNL,
10380         },
10381         {
10382                 .cmd = NL80211_CMD_DEL_STATION,
10383                 .doit = nl80211_del_station,
10384                 .policy = nl80211_policy,
10385                 .flags = GENL_ADMIN_PERM,
10386                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10387                                   NL80211_FLAG_NEED_RTNL,
10388         },
10389         {
10390                 .cmd = NL80211_CMD_GET_MPATH,
10391                 .doit = nl80211_get_mpath,
10392                 .dumpit = nl80211_dump_mpath,
10393                 .policy = nl80211_policy,
10394                 .flags = GENL_ADMIN_PERM,
10395                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10396                                   NL80211_FLAG_NEED_RTNL,
10397         },
10398         {
10399                 .cmd = NL80211_CMD_GET_MPP,
10400                 .doit = nl80211_get_mpp,
10401                 .dumpit = nl80211_dump_mpp,
10402                 .policy = nl80211_policy,
10403                 .flags = GENL_ADMIN_PERM,
10404                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10405                                   NL80211_FLAG_NEED_RTNL,
10406         },
10407         {
10408                 .cmd = NL80211_CMD_SET_MPATH,
10409                 .doit = nl80211_set_mpath,
10410                 .policy = nl80211_policy,
10411                 .flags = GENL_ADMIN_PERM,
10412                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10413                                   NL80211_FLAG_NEED_RTNL,
10414         },
10415         {
10416                 .cmd = NL80211_CMD_NEW_MPATH,
10417                 .doit = nl80211_new_mpath,
10418                 .policy = nl80211_policy,
10419                 .flags = GENL_ADMIN_PERM,
10420                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10421                                   NL80211_FLAG_NEED_RTNL,
10422         },
10423         {
10424                 .cmd = NL80211_CMD_DEL_MPATH,
10425                 .doit = nl80211_del_mpath,
10426                 .policy = nl80211_policy,
10427                 .flags = GENL_ADMIN_PERM,
10428                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10429                                   NL80211_FLAG_NEED_RTNL,
10430         },
10431         {
10432                 .cmd = NL80211_CMD_SET_BSS,
10433                 .doit = nl80211_set_bss,
10434                 .policy = nl80211_policy,
10435                 .flags = GENL_ADMIN_PERM,
10436                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10437                                   NL80211_FLAG_NEED_RTNL,
10438         },
10439         {
10440                 .cmd = NL80211_CMD_GET_REG,
10441                 .doit = nl80211_get_reg_do,
10442                 .dumpit = nl80211_get_reg_dump,
10443                 .policy = nl80211_policy,
10444                 .internal_flags = NL80211_FLAG_NEED_RTNL,
10445                 /* can be retrieved by unprivileged users */
10446         },
10447         {
10448                 .cmd = NL80211_CMD_SET_REG,
10449                 .doit = nl80211_set_reg,
10450                 .policy = nl80211_policy,
10451                 .flags = GENL_ADMIN_PERM,
10452                 .internal_flags = NL80211_FLAG_NEED_RTNL,
10453         },
10454         {
10455                 .cmd = NL80211_CMD_REQ_SET_REG,
10456                 .doit = nl80211_req_set_reg,
10457                 .policy = nl80211_policy,
10458                 .flags = GENL_ADMIN_PERM,
10459         },
10460         {
10461                 .cmd = NL80211_CMD_GET_MESH_CONFIG,
10462                 .doit = nl80211_get_mesh_config,
10463                 .policy = nl80211_policy,
10464                 /* can be retrieved by unprivileged users */
10465                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10466                                   NL80211_FLAG_NEED_RTNL,
10467         },
10468         {
10469                 .cmd = NL80211_CMD_SET_MESH_CONFIG,
10470                 .doit = nl80211_update_mesh_config,
10471                 .policy = nl80211_policy,
10472                 .flags = GENL_ADMIN_PERM,
10473                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10474                                   NL80211_FLAG_NEED_RTNL,
10475         },
10476         {
10477                 .cmd = NL80211_CMD_TRIGGER_SCAN,
10478                 .doit = nl80211_trigger_scan,
10479                 .policy = nl80211_policy,
10480                 .flags = GENL_ADMIN_PERM,
10481                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10482                                   NL80211_FLAG_NEED_RTNL,
10483         },
10484         {
10485                 .cmd = NL80211_CMD_GET_SCAN,
10486                 .policy = nl80211_policy,
10487                 .dumpit = nl80211_dump_scan,
10488         },
10489         {
10490                 .cmd = NL80211_CMD_START_SCHED_SCAN,
10491                 .doit = nl80211_start_sched_scan,
10492                 .policy = nl80211_policy,
10493                 .flags = GENL_ADMIN_PERM,
10494                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10495                                   NL80211_FLAG_NEED_RTNL,
10496         },
10497         {
10498                 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
10499                 .doit = nl80211_stop_sched_scan,
10500                 .policy = nl80211_policy,
10501                 .flags = GENL_ADMIN_PERM,
10502                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10503                                   NL80211_FLAG_NEED_RTNL,
10504         },
10505         {
10506                 .cmd = NL80211_CMD_AUTHENTICATE,
10507                 .doit = nl80211_authenticate,
10508                 .policy = nl80211_policy,
10509                 .flags = GENL_ADMIN_PERM,
10510                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10511                                   NL80211_FLAG_NEED_RTNL |
10512                                   NL80211_FLAG_CLEAR_SKB,
10513         },
10514         {
10515                 .cmd = NL80211_CMD_ASSOCIATE,
10516                 .doit = nl80211_associate,
10517                 .policy = nl80211_policy,
10518                 .flags = GENL_ADMIN_PERM,
10519                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10520                                   NL80211_FLAG_NEED_RTNL,
10521         },
10522         {
10523                 .cmd = NL80211_CMD_DEAUTHENTICATE,
10524                 .doit = nl80211_deauthenticate,
10525                 .policy = nl80211_policy,
10526                 .flags = GENL_ADMIN_PERM,
10527                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10528                                   NL80211_FLAG_NEED_RTNL,
10529         },
10530         {
10531                 .cmd = NL80211_CMD_DISASSOCIATE,
10532                 .doit = nl80211_disassociate,
10533                 .policy = nl80211_policy,
10534                 .flags = GENL_ADMIN_PERM,
10535                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10536                                   NL80211_FLAG_NEED_RTNL,
10537         },
10538         {
10539                 .cmd = NL80211_CMD_JOIN_IBSS,
10540                 .doit = nl80211_join_ibss,
10541                 .policy = nl80211_policy,
10542                 .flags = GENL_ADMIN_PERM,
10543                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10544                                   NL80211_FLAG_NEED_RTNL,
10545         },
10546         {
10547                 .cmd = NL80211_CMD_LEAVE_IBSS,
10548                 .doit = nl80211_leave_ibss,
10549                 .policy = nl80211_policy,
10550                 .flags = GENL_ADMIN_PERM,
10551                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10552                                   NL80211_FLAG_NEED_RTNL,
10553         },
10554 #ifdef CONFIG_NL80211_TESTMODE
10555         {
10556                 .cmd = NL80211_CMD_TESTMODE,
10557                 .doit = nl80211_testmode_do,
10558                 .dumpit = nl80211_testmode_dump,
10559                 .policy = nl80211_policy,
10560                 .flags = GENL_ADMIN_PERM,
10561                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10562                                   NL80211_FLAG_NEED_RTNL,
10563         },
10564 #endif
10565         {
10566                 .cmd = NL80211_CMD_CONNECT,
10567                 .doit = nl80211_connect,
10568                 .policy = nl80211_policy,
10569                 .flags = GENL_ADMIN_PERM,
10570                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10571                                   NL80211_FLAG_NEED_RTNL,
10572         },
10573         {
10574                 .cmd = NL80211_CMD_DISCONNECT,
10575                 .doit = nl80211_disconnect,
10576                 .policy = nl80211_policy,
10577                 .flags = GENL_ADMIN_PERM,
10578                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10579                                   NL80211_FLAG_NEED_RTNL,
10580         },
10581         {
10582                 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
10583                 .doit = nl80211_wiphy_netns,
10584                 .policy = nl80211_policy,
10585                 .flags = GENL_ADMIN_PERM,
10586                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10587                                   NL80211_FLAG_NEED_RTNL,
10588         },
10589         {
10590                 .cmd = NL80211_CMD_GET_SURVEY,
10591                 .policy = nl80211_policy,
10592                 .dumpit = nl80211_dump_survey,
10593         },
10594         {
10595                 .cmd = NL80211_CMD_SET_PMKSA,
10596                 .doit = nl80211_setdel_pmksa,
10597                 .policy = nl80211_policy,
10598                 .flags = GENL_ADMIN_PERM,
10599                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10600                                   NL80211_FLAG_NEED_RTNL,
10601         },
10602         {
10603                 .cmd = NL80211_CMD_DEL_PMKSA,
10604                 .doit = nl80211_setdel_pmksa,
10605                 .policy = nl80211_policy,
10606                 .flags = GENL_ADMIN_PERM,
10607                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10608                                   NL80211_FLAG_NEED_RTNL,
10609         },
10610         {
10611                 .cmd = NL80211_CMD_FLUSH_PMKSA,
10612                 .doit = nl80211_flush_pmksa,
10613                 .policy = nl80211_policy,
10614                 .flags = GENL_ADMIN_PERM,
10615                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10616                                   NL80211_FLAG_NEED_RTNL,
10617         },
10618         {
10619                 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
10620                 .doit = nl80211_remain_on_channel,
10621                 .policy = nl80211_policy,
10622                 .flags = GENL_ADMIN_PERM,
10623                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10624                                   NL80211_FLAG_NEED_RTNL,
10625         },
10626         {
10627                 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
10628                 .doit = nl80211_cancel_remain_on_channel,
10629                 .policy = nl80211_policy,
10630                 .flags = GENL_ADMIN_PERM,
10631                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10632                                   NL80211_FLAG_NEED_RTNL,
10633         },
10634         {
10635                 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
10636                 .doit = nl80211_set_tx_bitrate_mask,
10637                 .policy = nl80211_policy,
10638                 .flags = GENL_ADMIN_PERM,
10639                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10640                                   NL80211_FLAG_NEED_RTNL,
10641         },
10642         {
10643                 .cmd = NL80211_CMD_REGISTER_FRAME,
10644                 .doit = nl80211_register_mgmt,
10645                 .policy = nl80211_policy,
10646                 .flags = GENL_ADMIN_PERM,
10647                 .internal_flags = NL80211_FLAG_NEED_WDEV |
10648                                   NL80211_FLAG_NEED_RTNL,
10649         },
10650         {
10651                 .cmd = NL80211_CMD_FRAME,
10652                 .doit = nl80211_tx_mgmt,
10653                 .policy = nl80211_policy,
10654                 .flags = GENL_ADMIN_PERM,
10655                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10656                                   NL80211_FLAG_NEED_RTNL,
10657         },
10658         {
10659                 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
10660                 .doit = nl80211_tx_mgmt_cancel_wait,
10661                 .policy = nl80211_policy,
10662                 .flags = GENL_ADMIN_PERM,
10663                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10664                                   NL80211_FLAG_NEED_RTNL,
10665         },
10666         {
10667                 .cmd = NL80211_CMD_SET_POWER_SAVE,
10668                 .doit = nl80211_set_power_save,
10669                 .policy = nl80211_policy,
10670                 .flags = GENL_ADMIN_PERM,
10671                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10672                                   NL80211_FLAG_NEED_RTNL,
10673         },
10674         {
10675                 .cmd = NL80211_CMD_GET_POWER_SAVE,
10676                 .doit = nl80211_get_power_save,
10677                 .policy = nl80211_policy,
10678                 /* can be retrieved by unprivileged users */
10679                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10680                                   NL80211_FLAG_NEED_RTNL,
10681         },
10682         {
10683                 .cmd = NL80211_CMD_SET_CQM,
10684                 .doit = nl80211_set_cqm,
10685                 .policy = nl80211_policy,
10686                 .flags = GENL_ADMIN_PERM,
10687                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10688                                   NL80211_FLAG_NEED_RTNL,
10689         },
10690         {
10691                 .cmd = NL80211_CMD_SET_CHANNEL,
10692                 .doit = nl80211_set_channel,
10693                 .policy = nl80211_policy,
10694                 .flags = GENL_ADMIN_PERM,
10695                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10696                                   NL80211_FLAG_NEED_RTNL,
10697         },
10698         {
10699                 .cmd = NL80211_CMD_SET_WDS_PEER,
10700                 .doit = nl80211_set_wds_peer,
10701                 .policy = nl80211_policy,
10702                 .flags = GENL_ADMIN_PERM,
10703                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10704                                   NL80211_FLAG_NEED_RTNL,
10705         },
10706         {
10707                 .cmd = NL80211_CMD_JOIN_MESH,
10708                 .doit = nl80211_join_mesh,
10709                 .policy = nl80211_policy,
10710                 .flags = GENL_ADMIN_PERM,
10711                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10712                                   NL80211_FLAG_NEED_RTNL,
10713         },
10714         {
10715                 .cmd = NL80211_CMD_LEAVE_MESH,
10716                 .doit = nl80211_leave_mesh,
10717                 .policy = nl80211_policy,
10718                 .flags = GENL_ADMIN_PERM,
10719                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10720                                   NL80211_FLAG_NEED_RTNL,
10721         },
10722         {
10723                 .cmd = NL80211_CMD_JOIN_OCB,
10724                 .doit = nl80211_join_ocb,
10725                 .policy = nl80211_policy,
10726                 .flags = GENL_ADMIN_PERM,
10727                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10728                                   NL80211_FLAG_NEED_RTNL,
10729         },
10730         {
10731                 .cmd = NL80211_CMD_LEAVE_OCB,
10732                 .doit = nl80211_leave_ocb,
10733                 .policy = nl80211_policy,
10734                 .flags = GENL_ADMIN_PERM,
10735                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10736                                   NL80211_FLAG_NEED_RTNL,
10737         },
10738 #ifdef CONFIG_PM
10739         {
10740                 .cmd = NL80211_CMD_GET_WOWLAN,
10741                 .doit = nl80211_get_wowlan,
10742                 .policy = nl80211_policy,
10743                 /* can be retrieved by unprivileged users */
10744                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10745                                   NL80211_FLAG_NEED_RTNL,
10746         },
10747         {
10748                 .cmd = NL80211_CMD_SET_WOWLAN,
10749                 .doit = nl80211_set_wowlan,
10750                 .policy = nl80211_policy,
10751                 .flags = GENL_ADMIN_PERM,
10752                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10753                                   NL80211_FLAG_NEED_RTNL,
10754         },
10755 #endif
10756         {
10757                 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
10758                 .doit = nl80211_set_rekey_data,
10759                 .policy = nl80211_policy,
10760                 .flags = GENL_ADMIN_PERM,
10761                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10762                                   NL80211_FLAG_NEED_RTNL |
10763                                   NL80211_FLAG_CLEAR_SKB,
10764         },
10765         {
10766                 .cmd = NL80211_CMD_TDLS_MGMT,
10767                 .doit = nl80211_tdls_mgmt,
10768                 .policy = nl80211_policy,
10769                 .flags = GENL_ADMIN_PERM,
10770                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10771                                   NL80211_FLAG_NEED_RTNL,
10772         },
10773         {
10774                 .cmd = NL80211_CMD_TDLS_OPER,
10775                 .doit = nl80211_tdls_oper,
10776                 .policy = nl80211_policy,
10777                 .flags = GENL_ADMIN_PERM,
10778                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10779                                   NL80211_FLAG_NEED_RTNL,
10780         },
10781         {
10782                 .cmd = NL80211_CMD_UNEXPECTED_FRAME,
10783                 .doit = nl80211_register_unexpected_frame,
10784                 .policy = nl80211_policy,
10785                 .flags = GENL_ADMIN_PERM,
10786                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10787                                   NL80211_FLAG_NEED_RTNL,
10788         },
10789         {
10790                 .cmd = NL80211_CMD_PROBE_CLIENT,
10791                 .doit = nl80211_probe_client,
10792                 .policy = nl80211_policy,
10793                 .flags = GENL_ADMIN_PERM,
10794                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10795                                   NL80211_FLAG_NEED_RTNL,
10796         },
10797         {
10798                 .cmd = NL80211_CMD_REGISTER_BEACONS,
10799                 .doit = nl80211_register_beacons,
10800                 .policy = nl80211_policy,
10801                 .flags = GENL_ADMIN_PERM,
10802                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10803                                   NL80211_FLAG_NEED_RTNL,
10804         },
10805         {
10806                 .cmd = NL80211_CMD_SET_NOACK_MAP,
10807                 .doit = nl80211_set_noack_map,
10808                 .policy = nl80211_policy,
10809                 .flags = GENL_ADMIN_PERM,
10810                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10811                                   NL80211_FLAG_NEED_RTNL,
10812         },
10813         {
10814                 .cmd = NL80211_CMD_START_P2P_DEVICE,
10815                 .doit = nl80211_start_p2p_device,
10816                 .policy = nl80211_policy,
10817                 .flags = GENL_ADMIN_PERM,
10818                 .internal_flags = NL80211_FLAG_NEED_WDEV |
10819                                   NL80211_FLAG_NEED_RTNL,
10820         },
10821         {
10822                 .cmd = NL80211_CMD_STOP_P2P_DEVICE,
10823                 .doit = nl80211_stop_p2p_device,
10824                 .policy = nl80211_policy,
10825                 .flags = GENL_ADMIN_PERM,
10826                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10827                                   NL80211_FLAG_NEED_RTNL,
10828         },
10829         {
10830                 .cmd = NL80211_CMD_SET_MCAST_RATE,
10831                 .doit = nl80211_set_mcast_rate,
10832                 .policy = nl80211_policy,
10833                 .flags = GENL_ADMIN_PERM,
10834                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10835                                   NL80211_FLAG_NEED_RTNL,
10836         },
10837         {
10838                 .cmd = NL80211_CMD_SET_MAC_ACL,
10839                 .doit = nl80211_set_mac_acl,
10840                 .policy = nl80211_policy,
10841                 .flags = GENL_ADMIN_PERM,
10842                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10843                                   NL80211_FLAG_NEED_RTNL,
10844         },
10845         {
10846                 .cmd = NL80211_CMD_RADAR_DETECT,
10847                 .doit = nl80211_start_radar_detection,
10848                 .policy = nl80211_policy,
10849                 .flags = GENL_ADMIN_PERM,
10850                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10851                                   NL80211_FLAG_NEED_RTNL,
10852         },
10853         {
10854                 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES,
10855                 .doit = nl80211_get_protocol_features,
10856                 .policy = nl80211_policy,
10857         },
10858         {
10859                 .cmd = NL80211_CMD_UPDATE_FT_IES,
10860                 .doit = nl80211_update_ft_ies,
10861                 .policy = nl80211_policy,
10862                 .flags = GENL_ADMIN_PERM,
10863                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10864                                   NL80211_FLAG_NEED_RTNL,
10865         },
10866         {
10867                 .cmd = NL80211_CMD_CRIT_PROTOCOL_START,
10868                 .doit = nl80211_crit_protocol_start,
10869                 .policy = nl80211_policy,
10870                 .flags = GENL_ADMIN_PERM,
10871                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10872                                   NL80211_FLAG_NEED_RTNL,
10873         },
10874         {
10875                 .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP,
10876                 .doit = nl80211_crit_protocol_stop,
10877                 .policy = nl80211_policy,
10878                 .flags = GENL_ADMIN_PERM,
10879                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10880                                   NL80211_FLAG_NEED_RTNL,
10881         },
10882         {
10883                 .cmd = NL80211_CMD_GET_COALESCE,
10884                 .doit = nl80211_get_coalesce,
10885                 .policy = nl80211_policy,
10886                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10887                                   NL80211_FLAG_NEED_RTNL,
10888         },
10889         {
10890                 .cmd = NL80211_CMD_SET_COALESCE,
10891                 .doit = nl80211_set_coalesce,
10892                 .policy = nl80211_policy,
10893                 .flags = GENL_ADMIN_PERM,
10894                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10895                                   NL80211_FLAG_NEED_RTNL,
10896         },
10897         {
10898                 .cmd = NL80211_CMD_CHANNEL_SWITCH,
10899                 .doit = nl80211_channel_switch,
10900                 .policy = nl80211_policy,
10901                 .flags = GENL_ADMIN_PERM,
10902                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10903                                   NL80211_FLAG_NEED_RTNL,
10904         },
10905         {
10906                 .cmd = NL80211_CMD_VENDOR,
10907                 .doit = nl80211_vendor_cmd,
10908                 .policy = nl80211_policy,
10909                 .flags = GENL_ADMIN_PERM,
10910                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10911                                   NL80211_FLAG_NEED_RTNL,
10912         },
10913         {
10914                 .cmd = NL80211_CMD_SET_QOS_MAP,
10915                 .doit = nl80211_set_qos_map,
10916                 .policy = nl80211_policy,
10917                 .flags = GENL_ADMIN_PERM,
10918                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10919                                   NL80211_FLAG_NEED_RTNL,
10920         },
10921         {
10922                 .cmd = NL80211_CMD_ADD_TX_TS,
10923                 .doit = nl80211_add_tx_ts,
10924                 .policy = nl80211_policy,
10925                 .flags = GENL_ADMIN_PERM,
10926                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10927                                   NL80211_FLAG_NEED_RTNL,
10928         },
10929         {
10930                 .cmd = NL80211_CMD_DEL_TX_TS,
10931                 .doit = nl80211_del_tx_ts,
10932                 .policy = nl80211_policy,
10933                 .flags = GENL_ADMIN_PERM,
10934                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10935                                   NL80211_FLAG_NEED_RTNL,
10936         },
10937         {
10938                 .cmd = NL80211_CMD_TDLS_CHANNEL_SWITCH,
10939                 .doit = nl80211_tdls_channel_switch,
10940                 .policy = nl80211_policy,
10941                 .flags = GENL_ADMIN_PERM,
10942                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10943                                   NL80211_FLAG_NEED_RTNL,
10944         },
10945         {
10946                 .cmd = NL80211_CMD_TDLS_CANCEL_CHANNEL_SWITCH,
10947                 .doit = nl80211_tdls_cancel_channel_switch,
10948                 .policy = nl80211_policy,
10949                 .flags = GENL_ADMIN_PERM,
10950                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10951                                   NL80211_FLAG_NEED_RTNL,
10952         },
10953 };
10954
10955 /* notification functions */
10956
10957 void nl80211_notify_wiphy(struct cfg80211_registered_device *rdev,
10958                           enum nl80211_commands cmd)
10959 {
10960         struct sk_buff *msg;
10961         struct nl80211_dump_wiphy_state state = {};
10962
10963         WARN_ON(cmd != NL80211_CMD_NEW_WIPHY &&
10964                 cmd != NL80211_CMD_DEL_WIPHY);
10965
10966         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10967         if (!msg)
10968                 return;
10969
10970         if (nl80211_send_wiphy(rdev, cmd, msg, 0, 0, 0, &state) < 0) {
10971                 nlmsg_free(msg);
10972                 return;
10973         }
10974
10975         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10976                                 NL80211_MCGRP_CONFIG, GFP_KERNEL);
10977 }
10978
10979 static int nl80211_add_scan_req(struct sk_buff *msg,
10980                                 struct cfg80211_registered_device *rdev)
10981 {
10982         struct cfg80211_scan_request *req = rdev->scan_req;
10983         struct nlattr *nest;
10984         int i;
10985
10986         if (WARN_ON(!req))
10987                 return 0;
10988
10989         nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS);
10990         if (!nest)
10991                 goto nla_put_failure;
10992         for (i = 0; i < req->n_ssids; i++) {
10993                 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid))
10994                         goto nla_put_failure;
10995         }
10996         nla_nest_end(msg, nest);
10997
10998         nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
10999         if (!nest)
11000                 goto nla_put_failure;
11001         for (i = 0; i < req->n_channels; i++) {
11002                 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
11003                         goto nla_put_failure;
11004         }
11005         nla_nest_end(msg, nest);
11006
11007         if (req->ie &&
11008             nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie))
11009                 goto nla_put_failure;
11010
11011         if (req->flags &&
11012             nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags))
11013                 goto nla_put_failure;
11014
11015         return 0;
11016  nla_put_failure:
11017         return -ENOBUFS;
11018 }
11019
11020 static int nl80211_send_scan_msg(struct sk_buff *msg,
11021                                  struct cfg80211_registered_device *rdev,
11022                                  struct wireless_dev *wdev,
11023                                  u32 portid, u32 seq, int flags,
11024                                  u32 cmd)
11025 {
11026         void *hdr;
11027
11028         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
11029         if (!hdr)
11030                 return -1;
11031
11032         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11033             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11034                                          wdev->netdev->ifindex)) ||
11035             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
11036                 goto nla_put_failure;
11037
11038         /* ignore errors and send incomplete event anyway */
11039         nl80211_add_scan_req(msg, rdev);
11040
11041         return genlmsg_end(msg, hdr);
11042
11043  nla_put_failure:
11044         genlmsg_cancel(msg, hdr);
11045         return -EMSGSIZE;
11046 }
11047
11048 static int
11049 nl80211_send_sched_scan_msg(struct sk_buff *msg,
11050                             struct cfg80211_registered_device *rdev,
11051                             struct net_device *netdev,
11052                             u32 portid, u32 seq, int flags, u32 cmd)
11053 {
11054         void *hdr;
11055
11056         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
11057         if (!hdr)
11058                 return -1;
11059
11060         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11061             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
11062                 goto nla_put_failure;
11063
11064         return genlmsg_end(msg, hdr);
11065
11066  nla_put_failure:
11067         genlmsg_cancel(msg, hdr);
11068         return -EMSGSIZE;
11069 }
11070
11071 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
11072                              struct wireless_dev *wdev)
11073 {
11074         struct sk_buff *msg;
11075
11076         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11077         if (!msg)
11078                 return;
11079
11080         if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
11081                                   NL80211_CMD_TRIGGER_SCAN) < 0) {
11082                 nlmsg_free(msg);
11083                 return;
11084         }
11085
11086         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11087                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
11088 }
11089
11090 struct sk_buff *nl80211_build_scan_msg(struct cfg80211_registered_device *rdev,
11091                                        struct wireless_dev *wdev, bool aborted)
11092 {
11093         struct sk_buff *msg;
11094
11095         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11096         if (!msg)
11097                 return NULL;
11098
11099         if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
11100                                   aborted ? NL80211_CMD_SCAN_ABORTED :
11101                                             NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
11102                 nlmsg_free(msg);
11103                 return NULL;
11104         }
11105
11106         return msg;
11107 }
11108
11109 void nl80211_send_scan_result(struct cfg80211_registered_device *rdev,
11110                               struct sk_buff *msg)
11111 {
11112         if (!msg)
11113                 return;
11114
11115         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11116                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
11117 }
11118
11119 void nl80211_send_sched_scan_results(struct cfg80211_registered_device *rdev,
11120                                      struct net_device *netdev)
11121 {
11122         struct sk_buff *msg;
11123
11124         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11125         if (!msg)
11126                 return;
11127
11128         if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0,
11129                                         NL80211_CMD_SCHED_SCAN_RESULTS) < 0) {
11130                 nlmsg_free(msg);
11131                 return;
11132         }
11133
11134         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11135                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
11136 }
11137
11138 void nl80211_send_sched_scan(struct cfg80211_registered_device *rdev,
11139                              struct net_device *netdev, u32 cmd)
11140 {
11141         struct sk_buff *msg;
11142
11143         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11144         if (!msg)
11145                 return;
11146
11147         if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0, cmd) < 0) {
11148                 nlmsg_free(msg);
11149                 return;
11150         }
11151
11152         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11153                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
11154 }
11155
11156 static bool nl80211_reg_change_event_fill(struct sk_buff *msg,
11157                                           struct regulatory_request *request)
11158 {
11159         /* Userspace can always count this one always being set */
11160         if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator))
11161                 goto nla_put_failure;
11162
11163         if (request->alpha2[0] == '0' && request->alpha2[1] == '0') {
11164                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
11165                                NL80211_REGDOM_TYPE_WORLD))
11166                         goto nla_put_failure;
11167         } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') {
11168                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
11169                                NL80211_REGDOM_TYPE_CUSTOM_WORLD))
11170                         goto nla_put_failure;
11171         } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
11172                    request->intersect) {
11173                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
11174                                NL80211_REGDOM_TYPE_INTERSECTION))
11175                         goto nla_put_failure;
11176         } else {
11177                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
11178                                NL80211_REGDOM_TYPE_COUNTRY) ||
11179                     nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
11180                                    request->alpha2))
11181                         goto nla_put_failure;
11182         }
11183
11184         if (request->wiphy_idx != WIPHY_IDX_INVALID) {
11185                 struct wiphy *wiphy = wiphy_idx_to_wiphy(request->wiphy_idx);
11186
11187                 if (wiphy &&
11188                     nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx))
11189                         goto nla_put_failure;
11190
11191                 if (wiphy &&
11192                     wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
11193                     nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
11194                         goto nla_put_failure;
11195         }
11196
11197         return true;
11198
11199 nla_put_failure:
11200         return false;
11201 }
11202
11203 /*
11204  * This can happen on global regulatory changes or device specific settings
11205  * based on custom regulatory domains.
11206  */
11207 void nl80211_common_reg_change_event(enum nl80211_commands cmd_id,
11208                                      struct regulatory_request *request)
11209 {
11210         struct sk_buff *msg;
11211         void *hdr;
11212
11213         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11214         if (!msg)
11215                 return;
11216
11217         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd_id);
11218         if (!hdr) {
11219                 nlmsg_free(msg);
11220                 return;
11221         }
11222
11223         if (nl80211_reg_change_event_fill(msg, request) == false)
11224                 goto nla_put_failure;
11225
11226         genlmsg_end(msg, hdr);
11227
11228         rcu_read_lock();
11229         genlmsg_multicast_allns(&nl80211_fam, msg, 0,
11230                                 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
11231         rcu_read_unlock();
11232
11233         return;
11234
11235 nla_put_failure:
11236         genlmsg_cancel(msg, hdr);
11237         nlmsg_free(msg);
11238 }
11239
11240 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
11241                                     struct net_device *netdev,
11242                                     const u8 *buf, size_t len,
11243                                     enum nl80211_commands cmd, gfp_t gfp,
11244                                     int uapsd_queues)
11245 {
11246         struct sk_buff *msg;
11247         void *hdr;
11248
11249         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11250         if (!msg)
11251                 return;
11252
11253         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
11254         if (!hdr) {
11255                 nlmsg_free(msg);
11256                 return;
11257         }
11258
11259         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11260             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11261             nla_put(msg, NL80211_ATTR_FRAME, len, buf))
11262                 goto nla_put_failure;
11263
11264         if (uapsd_queues >= 0) {
11265                 struct nlattr *nla_wmm =
11266                         nla_nest_start(msg, NL80211_ATTR_STA_WME);
11267                 if (!nla_wmm)
11268                         goto nla_put_failure;
11269
11270                 if (nla_put_u8(msg, NL80211_STA_WME_UAPSD_QUEUES,
11271                                uapsd_queues))
11272                         goto nla_put_failure;
11273
11274                 nla_nest_end(msg, nla_wmm);
11275         }
11276
11277         genlmsg_end(msg, hdr);
11278
11279         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11280                                 NL80211_MCGRP_MLME, gfp);
11281         return;
11282
11283  nla_put_failure:
11284         genlmsg_cancel(msg, hdr);
11285         nlmsg_free(msg);
11286 }
11287
11288 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
11289                           struct net_device *netdev, const u8 *buf,
11290                           size_t len, gfp_t gfp)
11291 {
11292         nl80211_send_mlme_event(rdev, netdev, buf, len,
11293                                 NL80211_CMD_AUTHENTICATE, gfp, -1);
11294 }
11295
11296 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
11297                            struct net_device *netdev, const u8 *buf,
11298                            size_t len, gfp_t gfp, int uapsd_queues)
11299 {
11300         nl80211_send_mlme_event(rdev, netdev, buf, len,
11301                                 NL80211_CMD_ASSOCIATE, gfp, uapsd_queues);
11302 }
11303
11304 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
11305                          struct net_device *netdev, const u8 *buf,
11306                          size_t len, gfp_t gfp)
11307 {
11308         nl80211_send_mlme_event(rdev, netdev, buf, len,
11309                                 NL80211_CMD_DEAUTHENTICATE, gfp, -1);
11310 }
11311
11312 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
11313                            struct net_device *netdev, const u8 *buf,
11314                            size_t len, gfp_t gfp)
11315 {
11316         nl80211_send_mlme_event(rdev, netdev, buf, len,
11317                                 NL80211_CMD_DISASSOCIATE, gfp, -1);
11318 }
11319
11320 void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf,
11321                                   size_t len)
11322 {
11323         struct wireless_dev *wdev = dev->ieee80211_ptr;
11324         struct wiphy *wiphy = wdev->wiphy;
11325         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11326         const struct ieee80211_mgmt *mgmt = (void *)buf;
11327         u32 cmd;
11328
11329         if (WARN_ON(len < 2))
11330                 return;
11331
11332         if (ieee80211_is_deauth(mgmt->frame_control))
11333                 cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE;
11334         else
11335                 cmd = NL80211_CMD_UNPROT_DISASSOCIATE;
11336
11337         trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len);
11338         nl80211_send_mlme_event(rdev, dev, buf, len, cmd, GFP_ATOMIC, -1);
11339 }
11340 EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt);
11341
11342 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
11343                                       struct net_device *netdev, int cmd,
11344                                       const u8 *addr, gfp_t gfp)
11345 {
11346         struct sk_buff *msg;
11347         void *hdr;
11348
11349         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11350         if (!msg)
11351                 return;
11352
11353         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
11354         if (!hdr) {
11355                 nlmsg_free(msg);
11356                 return;
11357         }
11358
11359         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11360             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11361             nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
11362             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
11363                 goto nla_put_failure;
11364
11365         genlmsg_end(msg, hdr);
11366
11367         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11368                                 NL80211_MCGRP_MLME, gfp);
11369         return;
11370
11371  nla_put_failure:
11372         genlmsg_cancel(msg, hdr);
11373         nlmsg_free(msg);
11374 }
11375
11376 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
11377                                struct net_device *netdev, const u8 *addr,
11378                                gfp_t gfp)
11379 {
11380         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
11381                                   addr, gfp);
11382 }
11383
11384 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
11385                                 struct net_device *netdev, const u8 *addr,
11386                                 gfp_t gfp)
11387 {
11388         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
11389                                   addr, gfp);
11390 }
11391
11392 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
11393                                  struct net_device *netdev, const u8 *bssid,
11394                                  const u8 *req_ie, size_t req_ie_len,
11395                                  const u8 *resp_ie, size_t resp_ie_len,
11396                                  u16 status, gfp_t gfp)
11397 {
11398         struct sk_buff *msg;
11399         void *hdr;
11400
11401         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11402         if (!msg)
11403                 return;
11404
11405         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
11406         if (!hdr) {
11407                 nlmsg_free(msg);
11408                 return;
11409         }
11410
11411         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11412             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11413             (bssid && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid)) ||
11414             nla_put_u16(msg, NL80211_ATTR_STATUS_CODE, status) ||
11415             (req_ie &&
11416              nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
11417             (resp_ie &&
11418              nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
11419                 goto nla_put_failure;
11420
11421         genlmsg_end(msg, hdr);
11422
11423         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11424                                 NL80211_MCGRP_MLME, gfp);
11425         return;
11426
11427  nla_put_failure:
11428         genlmsg_cancel(msg, hdr);
11429         nlmsg_free(msg);
11430
11431 }
11432
11433 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
11434                          struct net_device *netdev, const u8 *bssid,
11435                          const u8 *req_ie, size_t req_ie_len,
11436                          const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp)
11437 {
11438         struct sk_buff *msg;
11439         void *hdr;
11440
11441         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11442         if (!msg)
11443                 return;
11444
11445         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
11446         if (!hdr) {
11447                 nlmsg_free(msg);
11448                 return;
11449         }
11450
11451         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11452             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11453             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid) ||
11454             (req_ie &&
11455              nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
11456             (resp_ie &&
11457              nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
11458                 goto nla_put_failure;
11459
11460         genlmsg_end(msg, hdr);
11461
11462         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11463                                 NL80211_MCGRP_MLME, gfp);
11464         return;
11465
11466  nla_put_failure:
11467         genlmsg_cancel(msg, hdr);
11468         nlmsg_free(msg);
11469
11470 }
11471
11472 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
11473                                struct net_device *netdev, u16 reason,
11474                                const u8 *ie, size_t ie_len, bool from_ap)
11475 {
11476         struct sk_buff *msg;
11477         void *hdr;
11478
11479         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11480         if (!msg)
11481                 return;
11482
11483         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
11484         if (!hdr) {
11485                 nlmsg_free(msg);
11486                 return;
11487         }
11488
11489         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11490             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11491             (from_ap && reason &&
11492              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) ||
11493             (from_ap &&
11494              nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) ||
11495             (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie)))
11496                 goto nla_put_failure;
11497
11498         genlmsg_end(msg, hdr);
11499
11500         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11501                                 NL80211_MCGRP_MLME, GFP_KERNEL);
11502         return;
11503
11504  nla_put_failure:
11505         genlmsg_cancel(msg, hdr);
11506         nlmsg_free(msg);
11507
11508 }
11509
11510 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
11511                              struct net_device *netdev, const u8 *bssid,
11512                              gfp_t gfp)
11513 {
11514         struct sk_buff *msg;
11515         void *hdr;
11516
11517         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11518         if (!msg)
11519                 return;
11520
11521         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
11522         if (!hdr) {
11523                 nlmsg_free(msg);
11524                 return;
11525         }
11526
11527         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11528             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11529             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
11530                 goto nla_put_failure;
11531
11532         genlmsg_end(msg, hdr);
11533
11534         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11535                                 NL80211_MCGRP_MLME, gfp);
11536         return;
11537
11538  nla_put_failure:
11539         genlmsg_cancel(msg, hdr);
11540         nlmsg_free(msg);
11541 }
11542
11543 void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr,
11544                                         const u8* ie, u8 ie_len, gfp_t gfp)
11545 {
11546         struct wireless_dev *wdev = dev->ieee80211_ptr;
11547         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
11548         struct sk_buff *msg;
11549         void *hdr;
11550
11551         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT))
11552                 return;
11553
11554         trace_cfg80211_notify_new_peer_candidate(dev, addr);
11555
11556         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11557         if (!msg)
11558                 return;
11559
11560         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
11561         if (!hdr) {
11562                 nlmsg_free(msg);
11563                 return;
11564         }
11565
11566         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11567             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
11568             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
11569             (ie_len && ie &&
11570              nla_put(msg, NL80211_ATTR_IE, ie_len , ie)))
11571                 goto nla_put_failure;
11572
11573         genlmsg_end(msg, hdr);
11574
11575         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11576                                 NL80211_MCGRP_MLME, gfp);
11577         return;
11578
11579  nla_put_failure:
11580         genlmsg_cancel(msg, hdr);
11581         nlmsg_free(msg);
11582 }
11583 EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate);
11584
11585 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
11586                                  struct net_device *netdev, const u8 *addr,
11587                                  enum nl80211_key_type key_type, int key_id,
11588                                  const u8 *tsc, gfp_t gfp)
11589 {
11590         struct sk_buff *msg;
11591         void *hdr;
11592
11593         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11594         if (!msg)
11595                 return;
11596
11597         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
11598         if (!hdr) {
11599                 nlmsg_free(msg);
11600                 return;
11601         }
11602
11603         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11604             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11605             (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
11606             nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) ||
11607             (key_id != -1 &&
11608              nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) ||
11609             (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc)))
11610                 goto nla_put_failure;
11611
11612         genlmsg_end(msg, hdr);
11613
11614         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11615                                 NL80211_MCGRP_MLME, gfp);
11616         return;
11617
11618  nla_put_failure:
11619         genlmsg_cancel(msg, hdr);
11620         nlmsg_free(msg);
11621 }
11622
11623 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
11624                                     struct ieee80211_channel *channel_before,
11625                                     struct ieee80211_channel *channel_after)
11626 {
11627         struct sk_buff *msg;
11628         void *hdr;
11629         struct nlattr *nl_freq;
11630
11631         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
11632         if (!msg)
11633                 return;
11634
11635         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
11636         if (!hdr) {
11637                 nlmsg_free(msg);
11638                 return;
11639         }
11640
11641         /*
11642          * Since we are applying the beacon hint to a wiphy we know its
11643          * wiphy_idx is valid
11644          */
11645         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
11646                 goto nla_put_failure;
11647
11648         /* Before */
11649         nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE);
11650         if (!nl_freq)
11651                 goto nla_put_failure;
11652         if (nl80211_msg_put_channel(msg, channel_before, false))
11653                 goto nla_put_failure;
11654         nla_nest_end(msg, nl_freq);
11655
11656         /* After */
11657         nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER);
11658         if (!nl_freq)
11659                 goto nla_put_failure;
11660         if (nl80211_msg_put_channel(msg, channel_after, false))
11661                 goto nla_put_failure;
11662         nla_nest_end(msg, nl_freq);
11663
11664         genlmsg_end(msg, hdr);
11665
11666         rcu_read_lock();
11667         genlmsg_multicast_allns(&nl80211_fam, msg, 0,
11668                                 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
11669         rcu_read_unlock();
11670
11671         return;
11672
11673 nla_put_failure:
11674         genlmsg_cancel(msg, hdr);
11675         nlmsg_free(msg);
11676 }
11677
11678 static void nl80211_send_remain_on_chan_event(
11679         int cmd, struct cfg80211_registered_device *rdev,
11680         struct wireless_dev *wdev, u64 cookie,
11681         struct ieee80211_channel *chan,
11682         unsigned int duration, gfp_t gfp)
11683 {
11684         struct sk_buff *msg;
11685         void *hdr;
11686
11687         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11688         if (!msg)
11689                 return;
11690
11691         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
11692         if (!hdr) {
11693                 nlmsg_free(msg);
11694                 return;
11695         }
11696
11697         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11698             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11699                                          wdev->netdev->ifindex)) ||
11700             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
11701             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) ||
11702             nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
11703                         NL80211_CHAN_NO_HT) ||
11704             nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
11705                 goto nla_put_failure;
11706
11707         if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL &&
11708             nla_put_u32(msg, NL80211_ATTR_DURATION, duration))
11709                 goto nla_put_failure;
11710
11711         genlmsg_end(msg, hdr);
11712
11713         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11714                                 NL80211_MCGRP_MLME, gfp);
11715         return;
11716
11717  nla_put_failure:
11718         genlmsg_cancel(msg, hdr);
11719         nlmsg_free(msg);
11720 }
11721
11722 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie,
11723                                struct ieee80211_channel *chan,
11724                                unsigned int duration, gfp_t gfp)
11725 {
11726         struct wiphy *wiphy = wdev->wiphy;
11727         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11728
11729         trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration);
11730         nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
11731                                           rdev, wdev, cookie, chan,
11732                                           duration, gfp);
11733 }
11734 EXPORT_SYMBOL(cfg80211_ready_on_channel);
11735
11736 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie,
11737                                         struct ieee80211_channel *chan,
11738                                         gfp_t gfp)
11739 {
11740         struct wiphy *wiphy = wdev->wiphy;
11741         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11742
11743         trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan);
11744         nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
11745                                           rdev, wdev, cookie, chan, 0, gfp);
11746 }
11747 EXPORT_SYMBOL(cfg80211_remain_on_channel_expired);
11748
11749 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr,
11750                       struct station_info *sinfo, gfp_t gfp)
11751 {
11752         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
11753         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11754         struct sk_buff *msg;
11755
11756         trace_cfg80211_new_sta(dev, mac_addr, sinfo);
11757
11758         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11759         if (!msg)
11760                 return;
11761
11762         if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION, 0, 0, 0,
11763                                  rdev, dev, mac_addr, sinfo) < 0) {
11764                 nlmsg_free(msg);
11765                 return;
11766         }
11767
11768         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11769                                 NL80211_MCGRP_MLME, gfp);
11770 }
11771 EXPORT_SYMBOL(cfg80211_new_sta);
11772
11773 void cfg80211_del_sta_sinfo(struct net_device *dev, const u8 *mac_addr,
11774                             struct station_info *sinfo, gfp_t gfp)
11775 {
11776         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
11777         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11778         struct sk_buff *msg;
11779         struct station_info empty_sinfo = {};
11780
11781         if (!sinfo)
11782                 sinfo = &empty_sinfo;
11783
11784         trace_cfg80211_del_sta(dev, mac_addr);
11785
11786         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11787         if (!msg)
11788                 return;
11789
11790         if (nl80211_send_station(msg, NL80211_CMD_DEL_STATION, 0, 0, 0,
11791                                  rdev, dev, mac_addr, sinfo) < 0) {
11792                 nlmsg_free(msg);
11793                 return;
11794         }
11795
11796         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11797                                 NL80211_MCGRP_MLME, gfp);
11798 }
11799 EXPORT_SYMBOL(cfg80211_del_sta_sinfo);
11800
11801 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr,
11802                           enum nl80211_connect_failed_reason reason,
11803                           gfp_t gfp)
11804 {
11805         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
11806         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11807         struct sk_buff *msg;
11808         void *hdr;
11809
11810         msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
11811         if (!msg)
11812                 return;
11813
11814         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED);
11815         if (!hdr) {
11816                 nlmsg_free(msg);
11817                 return;
11818         }
11819
11820         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
11821             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
11822             nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason))
11823                 goto nla_put_failure;
11824
11825         genlmsg_end(msg, hdr);
11826
11827         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11828                                 NL80211_MCGRP_MLME, gfp);
11829         return;
11830
11831  nla_put_failure:
11832         genlmsg_cancel(msg, hdr);
11833         nlmsg_free(msg);
11834 }
11835 EXPORT_SYMBOL(cfg80211_conn_failed);
11836
11837 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
11838                                        const u8 *addr, gfp_t gfp)
11839 {
11840         struct wireless_dev *wdev = dev->ieee80211_ptr;
11841         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
11842         struct sk_buff *msg;
11843         void *hdr;
11844         u32 nlportid = ACCESS_ONCE(wdev->ap_unexpected_nlportid);
11845
11846         if (!nlportid)
11847                 return false;
11848
11849         msg = nlmsg_new(100, gfp);
11850         if (!msg)
11851                 return true;
11852
11853         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
11854         if (!hdr) {
11855                 nlmsg_free(msg);
11856                 return true;
11857         }
11858
11859         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11860             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
11861             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
11862                 goto nla_put_failure;
11863
11864         genlmsg_end(msg, hdr);
11865         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
11866         return true;
11867
11868  nla_put_failure:
11869         genlmsg_cancel(msg, hdr);
11870         nlmsg_free(msg);
11871         return true;
11872 }
11873
11874 bool cfg80211_rx_spurious_frame(struct net_device *dev,
11875                                 const u8 *addr, gfp_t gfp)
11876 {
11877         struct wireless_dev *wdev = dev->ieee80211_ptr;
11878         bool ret;
11879
11880         trace_cfg80211_rx_spurious_frame(dev, addr);
11881
11882         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
11883                     wdev->iftype != NL80211_IFTYPE_P2P_GO)) {
11884                 trace_cfg80211_return_bool(false);
11885                 return false;
11886         }
11887         ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
11888                                          addr, gfp);
11889         trace_cfg80211_return_bool(ret);
11890         return ret;
11891 }
11892 EXPORT_SYMBOL(cfg80211_rx_spurious_frame);
11893
11894 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev,
11895                                         const u8 *addr, gfp_t gfp)
11896 {
11897         struct wireless_dev *wdev = dev->ieee80211_ptr;
11898         bool ret;
11899
11900         trace_cfg80211_rx_unexpected_4addr_frame(dev, addr);
11901
11902         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
11903                     wdev->iftype != NL80211_IFTYPE_P2P_GO &&
11904                     wdev->iftype != NL80211_IFTYPE_AP_VLAN)) {
11905                 trace_cfg80211_return_bool(false);
11906                 return false;
11907         }
11908         ret = __nl80211_unexpected_frame(dev,
11909                                          NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
11910                                          addr, gfp);
11911         trace_cfg80211_return_bool(ret);
11912         return ret;
11913 }
11914 EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame);
11915
11916 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
11917                       struct wireless_dev *wdev, u32 nlportid,
11918                       int freq, int sig_dbm,
11919                       const u8 *buf, size_t len, u32 flags, gfp_t gfp)
11920 {
11921         struct net_device *netdev = wdev->netdev;
11922         struct sk_buff *msg;
11923         void *hdr;
11924
11925         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11926         if (!msg)
11927                 return -ENOMEM;
11928
11929         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
11930         if (!hdr) {
11931                 nlmsg_free(msg);
11932                 return -ENOMEM;
11933         }
11934
11935         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11936             (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11937                                         netdev->ifindex)) ||
11938             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
11939             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) ||
11940             (sig_dbm &&
11941              nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
11942             nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
11943             (flags &&
11944              nla_put_u32(msg, NL80211_ATTR_RXMGMT_FLAGS, flags)))
11945                 goto nla_put_failure;
11946
11947         genlmsg_end(msg, hdr);
11948
11949         return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
11950
11951  nla_put_failure:
11952         genlmsg_cancel(msg, hdr);
11953         nlmsg_free(msg);
11954         return -ENOBUFS;
11955 }
11956
11957 void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie,
11958                              const u8 *buf, size_t len, bool ack, gfp_t gfp)
11959 {
11960         struct wiphy *wiphy = wdev->wiphy;
11961         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11962         struct net_device *netdev = wdev->netdev;
11963         struct sk_buff *msg;
11964         void *hdr;
11965
11966         trace_cfg80211_mgmt_tx_status(wdev, cookie, ack);
11967
11968         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11969         if (!msg)
11970                 return;
11971
11972         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS);
11973         if (!hdr) {
11974                 nlmsg_free(msg);
11975                 return;
11976         }
11977
11978         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11979             (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11980                                    netdev->ifindex)) ||
11981             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
11982             nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
11983             nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) ||
11984             (ack && nla_put_flag(msg, NL80211_ATTR_ACK)))
11985                 goto nla_put_failure;
11986
11987         genlmsg_end(msg, hdr);
11988
11989         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11990                                 NL80211_MCGRP_MLME, gfp);
11991         return;
11992
11993  nla_put_failure:
11994         genlmsg_cancel(msg, hdr);
11995         nlmsg_free(msg);
11996 }
11997 EXPORT_SYMBOL(cfg80211_mgmt_tx_status);
11998
11999 static struct sk_buff *cfg80211_prepare_cqm(struct net_device *dev,
12000                                             const char *mac, gfp_t gfp)
12001 {
12002         struct wireless_dev *wdev = dev->ieee80211_ptr;
12003         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
12004         struct sk_buff *msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12005         void **cb;
12006
12007         if (!msg)
12008                 return NULL;
12009
12010         cb = (void **)msg->cb;
12011
12012         cb[0] = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
12013         if (!cb[0]) {
12014                 nlmsg_free(msg);
12015                 return NULL;
12016         }
12017
12018         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12019             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
12020                 goto nla_put_failure;
12021
12022         if (mac && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
12023                 goto nla_put_failure;
12024
12025         cb[1] = nla_nest_start(msg, NL80211_ATTR_CQM);
12026         if (!cb[1])
12027                 goto nla_put_failure;
12028
12029         cb[2] = rdev;
12030
12031         return msg;
12032  nla_put_failure:
12033         nlmsg_free(msg);
12034         return NULL;
12035 }
12036
12037 static void cfg80211_send_cqm(struct sk_buff *msg, gfp_t gfp)
12038 {
12039         void **cb = (void **)msg->cb;
12040         struct cfg80211_registered_device *rdev = cb[2];
12041
12042         nla_nest_end(msg, cb[1]);
12043         genlmsg_end(msg, cb[0]);
12044
12045         memset(msg->cb, 0, sizeof(msg->cb));
12046
12047         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12048                                 NL80211_MCGRP_MLME, gfp);
12049 }
12050
12051 void cfg80211_cqm_rssi_notify(struct net_device *dev,
12052                               enum nl80211_cqm_rssi_threshold_event rssi_event,
12053                               gfp_t gfp)
12054 {
12055         struct sk_buff *msg;
12056
12057         trace_cfg80211_cqm_rssi_notify(dev, rssi_event);
12058
12059         if (WARN_ON(rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW &&
12060                     rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH))
12061                 return;
12062
12063         msg = cfg80211_prepare_cqm(dev, NULL, gfp);
12064         if (!msg)
12065                 return;
12066
12067         if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
12068                         rssi_event))
12069                 goto nla_put_failure;
12070
12071         cfg80211_send_cqm(msg, gfp);
12072
12073         return;
12074
12075  nla_put_failure:
12076         nlmsg_free(msg);
12077 }
12078 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify);
12079
12080 void cfg80211_cqm_txe_notify(struct net_device *dev,
12081                              const u8 *peer, u32 num_packets,
12082                              u32 rate, u32 intvl, gfp_t gfp)
12083 {
12084         struct sk_buff *msg;
12085
12086         msg = cfg80211_prepare_cqm(dev, peer, gfp);
12087         if (!msg)
12088                 return;
12089
12090         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets))
12091                 goto nla_put_failure;
12092
12093         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate))
12094                 goto nla_put_failure;
12095
12096         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl))
12097                 goto nla_put_failure;
12098
12099         cfg80211_send_cqm(msg, gfp);
12100         return;
12101
12102  nla_put_failure:
12103         nlmsg_free(msg);
12104 }
12105 EXPORT_SYMBOL(cfg80211_cqm_txe_notify);
12106
12107 void cfg80211_cqm_pktloss_notify(struct net_device *dev,
12108                                  const u8 *peer, u32 num_packets, gfp_t gfp)
12109 {
12110         struct sk_buff *msg;
12111
12112         trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets);
12113
12114         msg = cfg80211_prepare_cqm(dev, peer, gfp);
12115         if (!msg)
12116                 return;
12117
12118         if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets))
12119                 goto nla_put_failure;
12120
12121         cfg80211_send_cqm(msg, gfp);
12122         return;
12123
12124  nla_put_failure:
12125         nlmsg_free(msg);
12126 }
12127 EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify);
12128
12129 void cfg80211_cqm_beacon_loss_notify(struct net_device *dev, gfp_t gfp)
12130 {
12131         struct sk_buff *msg;
12132
12133         msg = cfg80211_prepare_cqm(dev, NULL, gfp);
12134         if (!msg)
12135                 return;
12136
12137         if (nla_put_flag(msg, NL80211_ATTR_CQM_BEACON_LOSS_EVENT))
12138                 goto nla_put_failure;
12139
12140         cfg80211_send_cqm(msg, gfp);
12141         return;
12142
12143  nla_put_failure:
12144         nlmsg_free(msg);
12145 }
12146 EXPORT_SYMBOL(cfg80211_cqm_beacon_loss_notify);
12147
12148 static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
12149                                      struct net_device *netdev, const u8 *bssid,
12150                                      const u8 *replay_ctr, gfp_t gfp)
12151 {
12152         struct sk_buff *msg;
12153         struct nlattr *rekey_attr;
12154         void *hdr;
12155
12156         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12157         if (!msg)
12158                 return;
12159
12160         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
12161         if (!hdr) {
12162                 nlmsg_free(msg);
12163                 return;
12164         }
12165
12166         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12167             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
12168             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
12169                 goto nla_put_failure;
12170
12171         rekey_attr = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA);
12172         if (!rekey_attr)
12173                 goto nla_put_failure;
12174
12175         if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR,
12176                     NL80211_REPLAY_CTR_LEN, replay_ctr))
12177                 goto nla_put_failure;
12178
12179         nla_nest_end(msg, rekey_attr);
12180
12181         genlmsg_end(msg, hdr);
12182
12183         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12184                                 NL80211_MCGRP_MLME, gfp);
12185         return;
12186
12187  nla_put_failure:
12188         genlmsg_cancel(msg, hdr);
12189         nlmsg_free(msg);
12190 }
12191
12192 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid,
12193                                const u8 *replay_ctr, gfp_t gfp)
12194 {
12195         struct wireless_dev *wdev = dev->ieee80211_ptr;
12196         struct wiphy *wiphy = wdev->wiphy;
12197         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12198
12199         trace_cfg80211_gtk_rekey_notify(dev, bssid);
12200         nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp);
12201 }
12202 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify);
12203
12204 static void
12205 nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
12206                                struct net_device *netdev, int index,
12207                                const u8 *bssid, bool preauth, gfp_t gfp)
12208 {
12209         struct sk_buff *msg;
12210         struct nlattr *attr;
12211         void *hdr;
12212
12213         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12214         if (!msg)
12215                 return;
12216
12217         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
12218         if (!hdr) {
12219                 nlmsg_free(msg);
12220                 return;
12221         }
12222
12223         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12224             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
12225                 goto nla_put_failure;
12226
12227         attr = nla_nest_start(msg, NL80211_ATTR_PMKSA_CANDIDATE);
12228         if (!attr)
12229                 goto nla_put_failure;
12230
12231         if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) ||
12232             nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) ||
12233             (preauth &&
12234              nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH)))
12235                 goto nla_put_failure;
12236
12237         nla_nest_end(msg, attr);
12238
12239         genlmsg_end(msg, hdr);
12240
12241         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12242                                 NL80211_MCGRP_MLME, gfp);
12243         return;
12244
12245  nla_put_failure:
12246         genlmsg_cancel(msg, hdr);
12247         nlmsg_free(msg);
12248 }
12249
12250 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index,
12251                                      const u8 *bssid, bool preauth, gfp_t gfp)
12252 {
12253         struct wireless_dev *wdev = dev->ieee80211_ptr;
12254         struct wiphy *wiphy = wdev->wiphy;
12255         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12256
12257         trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth);
12258         nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp);
12259 }
12260 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify);
12261
12262 static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev,
12263                                      struct net_device *netdev,
12264                                      struct cfg80211_chan_def *chandef,
12265                                      gfp_t gfp,
12266                                      enum nl80211_commands notif,
12267                                      u8 count)
12268 {
12269         struct sk_buff *msg;
12270         void *hdr;
12271
12272         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12273         if (!msg)
12274                 return;
12275
12276         hdr = nl80211hdr_put(msg, 0, 0, 0, notif);
12277         if (!hdr) {
12278                 nlmsg_free(msg);
12279                 return;
12280         }
12281
12282         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
12283                 goto nla_put_failure;
12284
12285         if (nl80211_send_chandef(msg, chandef))
12286                 goto nla_put_failure;
12287
12288         if ((notif == NL80211_CMD_CH_SWITCH_STARTED_NOTIFY) &&
12289             (nla_put_u32(msg, NL80211_ATTR_CH_SWITCH_COUNT, count)))
12290                         goto nla_put_failure;
12291
12292         genlmsg_end(msg, hdr);
12293
12294         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12295                                 NL80211_MCGRP_MLME, gfp);
12296         return;
12297
12298  nla_put_failure:
12299         genlmsg_cancel(msg, hdr);
12300         nlmsg_free(msg);
12301 }
12302
12303 void cfg80211_ch_switch_notify(struct net_device *dev,
12304                                struct cfg80211_chan_def *chandef)
12305 {
12306         struct wireless_dev *wdev = dev->ieee80211_ptr;
12307         struct wiphy *wiphy = wdev->wiphy;
12308         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12309
12310         ASSERT_WDEV_LOCK(wdev);
12311
12312         trace_cfg80211_ch_switch_notify(dev, chandef);
12313
12314         wdev->chandef = *chandef;
12315         wdev->preset_chandef = *chandef;
12316         nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
12317                                  NL80211_CMD_CH_SWITCH_NOTIFY, 0);
12318 }
12319 EXPORT_SYMBOL(cfg80211_ch_switch_notify);
12320
12321 void cfg80211_ch_switch_started_notify(struct net_device *dev,
12322                                        struct cfg80211_chan_def *chandef,
12323                                        u8 count)
12324 {
12325         struct wireless_dev *wdev = dev->ieee80211_ptr;
12326         struct wiphy *wiphy = wdev->wiphy;
12327         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12328
12329         trace_cfg80211_ch_switch_started_notify(dev, chandef);
12330
12331         nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
12332                                  NL80211_CMD_CH_SWITCH_STARTED_NOTIFY, count);
12333 }
12334 EXPORT_SYMBOL(cfg80211_ch_switch_started_notify);
12335
12336 void
12337 nl80211_radar_notify(struct cfg80211_registered_device *rdev,
12338                      const struct cfg80211_chan_def *chandef,
12339                      enum nl80211_radar_event event,
12340                      struct net_device *netdev, gfp_t gfp)
12341 {
12342         struct sk_buff *msg;
12343         void *hdr;
12344
12345         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12346         if (!msg)
12347                 return;
12348
12349         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT);
12350         if (!hdr) {
12351                 nlmsg_free(msg);
12352                 return;
12353         }
12354
12355         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
12356                 goto nla_put_failure;
12357
12358         /* NOP and radar events don't need a netdev parameter */
12359         if (netdev) {
12360                 struct wireless_dev *wdev = netdev->ieee80211_ptr;
12361
12362                 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
12363                     nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
12364                         goto nla_put_failure;
12365         }
12366
12367         if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event))
12368                 goto nla_put_failure;
12369
12370         if (nl80211_send_chandef(msg, chandef))
12371                 goto nla_put_failure;
12372
12373         genlmsg_end(msg, hdr);
12374
12375         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12376                                 NL80211_MCGRP_MLME, gfp);
12377         return;
12378
12379  nla_put_failure:
12380         genlmsg_cancel(msg, hdr);
12381         nlmsg_free(msg);
12382 }
12383
12384 void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
12385                            u64 cookie, bool acked, gfp_t gfp)
12386 {
12387         struct wireless_dev *wdev = dev->ieee80211_ptr;
12388         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
12389         struct sk_buff *msg;
12390         void *hdr;
12391
12392         trace_cfg80211_probe_status(dev, addr, cookie, acked);
12393
12394         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12395
12396         if (!msg)
12397                 return;
12398
12399         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT);
12400         if (!hdr) {
12401                 nlmsg_free(msg);
12402                 return;
12403         }
12404
12405         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12406             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
12407             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
12408             nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) ||
12409             (acked && nla_put_flag(msg, NL80211_ATTR_ACK)))
12410                 goto nla_put_failure;
12411
12412         genlmsg_end(msg, hdr);
12413
12414         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12415                                 NL80211_MCGRP_MLME, gfp);
12416         return;
12417
12418  nla_put_failure:
12419         genlmsg_cancel(msg, hdr);
12420         nlmsg_free(msg);
12421 }
12422 EXPORT_SYMBOL(cfg80211_probe_status);
12423
12424 void cfg80211_report_obss_beacon(struct wiphy *wiphy,
12425                                  const u8 *frame, size_t len,
12426                                  int freq, int sig_dbm)
12427 {
12428         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12429         struct sk_buff *msg;
12430         void *hdr;
12431         struct cfg80211_beacon_registration *reg;
12432
12433         trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm);
12434
12435         spin_lock_bh(&rdev->beacon_registrations_lock);
12436         list_for_each_entry(reg, &rdev->beacon_registrations, list) {
12437                 msg = nlmsg_new(len + 100, GFP_ATOMIC);
12438                 if (!msg) {
12439                         spin_unlock_bh(&rdev->beacon_registrations_lock);
12440                         return;
12441                 }
12442
12443                 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
12444                 if (!hdr)
12445                         goto nla_put_failure;
12446
12447                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12448                     (freq &&
12449                      nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq)) ||
12450                     (sig_dbm &&
12451                      nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
12452                     nla_put(msg, NL80211_ATTR_FRAME, len, frame))
12453                         goto nla_put_failure;
12454
12455                 genlmsg_end(msg, hdr);
12456
12457                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid);
12458         }
12459         spin_unlock_bh(&rdev->beacon_registrations_lock);
12460         return;
12461
12462  nla_put_failure:
12463         spin_unlock_bh(&rdev->beacon_registrations_lock);
12464         if (hdr)
12465                 genlmsg_cancel(msg, hdr);
12466         nlmsg_free(msg);
12467 }
12468 EXPORT_SYMBOL(cfg80211_report_obss_beacon);
12469
12470 #ifdef CONFIG_PM
12471 static int cfg80211_net_detect_results(struct sk_buff *msg,
12472                                        struct cfg80211_wowlan_wakeup *wakeup)
12473 {
12474         struct cfg80211_wowlan_nd_info *nd = wakeup->net_detect;
12475         struct nlattr *nl_results, *nl_match, *nl_freqs;
12476         int i, j;
12477
12478         nl_results = nla_nest_start(
12479                 msg, NL80211_WOWLAN_TRIG_NET_DETECT_RESULTS);
12480         if (!nl_results)
12481                 return -EMSGSIZE;
12482
12483         for (i = 0; i < nd->n_matches; i++) {
12484                 struct cfg80211_wowlan_nd_match *match = nd->matches[i];
12485
12486                 nl_match = nla_nest_start(msg, i);
12487                 if (!nl_match)
12488                         break;
12489
12490                 /* The SSID attribute is optional in nl80211, but for
12491                  * simplicity reasons it's always present in the
12492                  * cfg80211 structure.  If a driver can't pass the
12493                  * SSID, that needs to be changed.  A zero length SSID
12494                  * is still a valid SSID (wildcard), so it cannot be
12495                  * used for this purpose.
12496                  */
12497                 if (nla_put(msg, NL80211_ATTR_SSID, match->ssid.ssid_len,
12498                             match->ssid.ssid)) {
12499                         nla_nest_cancel(msg, nl_match);
12500                         goto out;
12501                 }
12502
12503                 if (match->n_channels) {
12504                         nl_freqs = nla_nest_start(
12505                                 msg, NL80211_ATTR_SCAN_FREQUENCIES);
12506                         if (!nl_freqs) {
12507                                 nla_nest_cancel(msg, nl_match);
12508                                 goto out;
12509                         }
12510
12511                         for (j = 0; j < match->n_channels; j++) {
12512                                 if (nla_put_u32(msg,
12513                                                 NL80211_ATTR_WIPHY_FREQ,
12514                                                 match->channels[j])) {
12515                                         nla_nest_cancel(msg, nl_freqs);
12516                                         nla_nest_cancel(msg, nl_match);
12517                                         goto out;
12518                                 }
12519                         }
12520
12521                         nla_nest_end(msg, nl_freqs);
12522                 }
12523
12524                 nla_nest_end(msg, nl_match);
12525         }
12526
12527 out:
12528         nla_nest_end(msg, nl_results);
12529         return 0;
12530 }
12531
12532 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev,
12533                                    struct cfg80211_wowlan_wakeup *wakeup,
12534                                    gfp_t gfp)
12535 {
12536         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
12537         struct sk_buff *msg;
12538         void *hdr;
12539         int size = 200;
12540
12541         trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup);
12542
12543         if (wakeup)
12544                 size += wakeup->packet_present_len;
12545
12546         msg = nlmsg_new(size, gfp);
12547         if (!msg)
12548                 return;
12549
12550         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN);
12551         if (!hdr)
12552                 goto free_msg;
12553
12554         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12555             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
12556                 goto free_msg;
12557
12558         if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
12559                                         wdev->netdev->ifindex))
12560                 goto free_msg;
12561
12562         if (wakeup) {
12563                 struct nlattr *reasons;
12564
12565                 reasons = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
12566                 if (!reasons)
12567                         goto free_msg;
12568
12569                 if (wakeup->disconnect &&
12570                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT))
12571                         goto free_msg;
12572                 if (wakeup->magic_pkt &&
12573                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT))
12574                         goto free_msg;
12575                 if (wakeup->gtk_rekey_failure &&
12576                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE))
12577                         goto free_msg;
12578                 if (wakeup->eap_identity_req &&
12579                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST))
12580                         goto free_msg;
12581                 if (wakeup->four_way_handshake &&
12582                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE))
12583                         goto free_msg;
12584                 if (wakeup->rfkill_release &&
12585                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))
12586                         goto free_msg;
12587
12588                 if (wakeup->pattern_idx >= 0 &&
12589                     nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
12590                                 wakeup->pattern_idx))
12591                         goto free_msg;
12592
12593                 if (wakeup->tcp_match &&
12594                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH))
12595                         goto free_msg;
12596
12597                 if (wakeup->tcp_connlost &&
12598                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST))
12599                         goto free_msg;
12600
12601                 if (wakeup->tcp_nomoretokens &&
12602                     nla_put_flag(msg,
12603                                  NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS))
12604                         goto free_msg;
12605
12606                 if (wakeup->packet) {
12607                         u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211;
12608                         u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN;
12609
12610                         if (!wakeup->packet_80211) {
12611                                 pkt_attr =
12612                                         NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023;
12613                                 len_attr =
12614                                         NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN;
12615                         }
12616
12617                         if (wakeup->packet_len &&
12618                             nla_put_u32(msg, len_attr, wakeup->packet_len))
12619                                 goto free_msg;
12620
12621                         if (nla_put(msg, pkt_attr, wakeup->packet_present_len,
12622                                     wakeup->packet))
12623                                 goto free_msg;
12624                 }
12625
12626                 if (wakeup->net_detect &&
12627                     cfg80211_net_detect_results(msg, wakeup))
12628                                 goto free_msg;
12629
12630                 nla_nest_end(msg, reasons);
12631         }
12632
12633         genlmsg_end(msg, hdr);
12634
12635         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12636                                 NL80211_MCGRP_MLME, gfp);
12637         return;
12638
12639  free_msg:
12640         nlmsg_free(msg);
12641 }
12642 EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup);
12643 #endif
12644
12645 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer,
12646                                 enum nl80211_tdls_operation oper,
12647                                 u16 reason_code, gfp_t gfp)
12648 {
12649         struct wireless_dev *wdev = dev->ieee80211_ptr;
12650         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
12651         struct sk_buff *msg;
12652         void *hdr;
12653
12654         trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper,
12655                                          reason_code);
12656
12657         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12658         if (!msg)
12659                 return;
12660
12661         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER);
12662         if (!hdr) {
12663                 nlmsg_free(msg);
12664                 return;
12665         }
12666
12667         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12668             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
12669             nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) ||
12670             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) ||
12671             (reason_code > 0 &&
12672              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code)))
12673                 goto nla_put_failure;
12674
12675         genlmsg_end(msg, hdr);
12676
12677         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12678                                 NL80211_MCGRP_MLME, gfp);
12679         return;
12680
12681  nla_put_failure:
12682         genlmsg_cancel(msg, hdr);
12683         nlmsg_free(msg);
12684 }
12685 EXPORT_SYMBOL(cfg80211_tdls_oper_request);
12686
12687 static int nl80211_netlink_notify(struct notifier_block * nb,
12688                                   unsigned long state,
12689                                   void *_notify)
12690 {
12691         struct netlink_notify *notify = _notify;
12692         struct cfg80211_registered_device *rdev;
12693         struct wireless_dev *wdev;
12694         struct cfg80211_beacon_registration *reg, *tmp;
12695
12696         if (state != NETLINK_URELEASE)
12697                 return NOTIFY_DONE;
12698
12699         rcu_read_lock();
12700
12701         list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
12702                 bool schedule_destroy_work = false;
12703                 bool schedule_scan_stop = false;
12704                 struct cfg80211_sched_scan_request *sched_scan_req =
12705                         rcu_dereference(rdev->sched_scan_req);
12706
12707                 if (sched_scan_req && notify->portid &&
12708                     sched_scan_req->owner_nlportid == notify->portid)
12709                         schedule_scan_stop = true;
12710
12711                 list_for_each_entry_rcu(wdev, &rdev->wdev_list, list) {
12712                         cfg80211_mlme_unregister_socket(wdev, notify->portid);
12713
12714                         if (wdev->owner_nlportid == notify->portid)
12715                                 schedule_destroy_work = true;
12716                 }
12717
12718                 spin_lock_bh(&rdev->beacon_registrations_lock);
12719                 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations,
12720                                          list) {
12721                         if (reg->nlportid == notify->portid) {
12722                                 list_del(&reg->list);
12723                                 kfree(reg);
12724                                 break;
12725                         }
12726                 }
12727                 spin_unlock_bh(&rdev->beacon_registrations_lock);
12728
12729                 if (schedule_destroy_work) {
12730                         struct cfg80211_iface_destroy *destroy;
12731
12732                         destroy = kzalloc(sizeof(*destroy), GFP_ATOMIC);
12733                         if (destroy) {
12734                                 destroy->nlportid = notify->portid;
12735                                 spin_lock(&rdev->destroy_list_lock);
12736                                 list_add(&destroy->list, &rdev->destroy_list);
12737                                 spin_unlock(&rdev->destroy_list_lock);
12738                                 schedule_work(&rdev->destroy_work);
12739                         }
12740                 } else if (schedule_scan_stop) {
12741                         sched_scan_req->owner_nlportid = 0;
12742
12743                         if (rdev->ops->sched_scan_stop &&
12744                             rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN)
12745                                 schedule_work(&rdev->sched_scan_stop_wk);
12746                 }
12747         }
12748
12749         rcu_read_unlock();
12750
12751         return NOTIFY_OK;
12752 }
12753
12754 static struct notifier_block nl80211_netlink_notifier = {
12755         .notifier_call = nl80211_netlink_notify,
12756 };
12757
12758 void cfg80211_ft_event(struct net_device *netdev,
12759                        struct cfg80211_ft_event_params *ft_event)
12760 {
12761         struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
12762         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12763         struct sk_buff *msg;
12764         void *hdr;
12765
12766         trace_cfg80211_ft_event(wiphy, netdev, ft_event);
12767
12768         if (!ft_event->target_ap)
12769                 return;
12770
12771         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12772         if (!msg)
12773                 return;
12774
12775         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT);
12776         if (!hdr)
12777                 goto out;
12778
12779         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12780             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
12781             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap))
12782                 goto out;
12783
12784         if (ft_event->ies &&
12785             nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies))
12786                 goto out;
12787         if (ft_event->ric_ies &&
12788             nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len,
12789                     ft_event->ric_ies))
12790                 goto out;
12791
12792         genlmsg_end(msg, hdr);
12793
12794         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12795                                 NL80211_MCGRP_MLME, GFP_KERNEL);
12796         return;
12797  out:
12798         nlmsg_free(msg);
12799 }
12800 EXPORT_SYMBOL(cfg80211_ft_event);
12801
12802 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp)
12803 {
12804         struct cfg80211_registered_device *rdev;
12805         struct sk_buff *msg;
12806         void *hdr;
12807         u32 nlportid;
12808
12809         rdev = wiphy_to_rdev(wdev->wiphy);
12810         if (!rdev->crit_proto_nlportid)
12811                 return;
12812
12813         nlportid = rdev->crit_proto_nlportid;
12814         rdev->crit_proto_nlportid = 0;
12815
12816         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12817         if (!msg)
12818                 return;
12819
12820         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP);
12821         if (!hdr)
12822                 goto nla_put_failure;
12823
12824         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12825             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
12826                 goto nla_put_failure;
12827
12828         genlmsg_end(msg, hdr);
12829
12830         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
12831         return;
12832
12833  nla_put_failure:
12834         if (hdr)
12835                 genlmsg_cancel(msg, hdr);
12836         nlmsg_free(msg);
12837
12838 }
12839 EXPORT_SYMBOL(cfg80211_crit_proto_stopped);
12840
12841 void nl80211_send_ap_stopped(struct wireless_dev *wdev)
12842 {
12843         struct wiphy *wiphy = wdev->wiphy;
12844         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12845         struct sk_buff *msg;
12846         void *hdr;
12847
12848         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12849         if (!msg)
12850                 return;
12851
12852         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STOP_AP);
12853         if (!hdr)
12854                 goto out;
12855
12856         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12857             nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex) ||
12858             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
12859                 goto out;
12860
12861         genlmsg_end(msg, hdr);
12862
12863         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(wiphy), msg, 0,
12864                                 NL80211_MCGRP_MLME, GFP_KERNEL);
12865         return;
12866  out:
12867         nlmsg_free(msg);
12868 }
12869
12870 /* initialisation/exit functions */
12871
12872 int nl80211_init(void)
12873 {
12874         int err;
12875
12876         err = genl_register_family_with_ops_groups(&nl80211_fam, nl80211_ops,
12877                                                    nl80211_mcgrps);
12878         if (err)
12879                 return err;
12880
12881         err = netlink_register_notifier(&nl80211_netlink_notifier);
12882         if (err)
12883                 goto err_out;
12884
12885         return 0;
12886  err_out:
12887         genl_unregister_family(&nl80211_fam);
12888         return err;
12889 }
12890
12891 void nl80211_exit(void)
12892 {
12893         netlink_unregister_notifier(&nl80211_netlink_notifier);
12894         genl_unregister_family(&nl80211_fam);
12895 }