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  * Copyright 2015-2016  Intel Deutschland GmbH
   7  */
   8
   9 #include <linux/if.h>
  10 #include <linux/module.h>
  11 #include <linux/err.h>
  12 #include <linux/slab.h>
  13 #include <linux/list.h>
  14 #include <linux/if_ether.h>
  15 #include <linux/ieee80211.h>
  16 #include <linux/nl80211.h>
  17 #include <linux/rtnetlink.h>
  18 #include <linux/netlink.h>
  19 #include <linux/etherdevice.h>
  20 #include <net/net_namespace.h>
  21 #include <net/genetlink.h>
  22 #include <net/cfg80211.h>
  23 #include <net/sock.h>
  24 #include <net/inet_connection_sock.h>
  25 #include "core.h"
  26 #include "nl80211.h"
  27 #include "reg.h"
  28 #include "rdev-ops.h"
  29
  30 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
  31                                    struct genl_info *info,
  32                                    struct cfg80211_crypto_settings *settings,
  33                                    int cipher_limit);
  34
  35 /* the netlink family */
  36 static struct genl_family nl80211_fam;
  37
  38 /* multicast groups */
  39 enum nl80211_multicast_groups {
  40         NL80211_MCGRP_CONFIG,
  41         NL80211_MCGRP_SCAN,
  42         NL80211_MCGRP_REGULATORY,
  43         NL80211_MCGRP_MLME,
  44         NL80211_MCGRP_VENDOR,
  45         NL80211_MCGRP_NAN,
  46         NL80211_MCGRP_TESTMODE /* keep last - ifdef! */
  47 };
  48
  49 static const struct genl_multicast_group nl80211_mcgrps[] = {
  50         [NL80211_MCGRP_CONFIG] = { .name = NL80211_MULTICAST_GROUP_CONFIG },
  51         [NL80211_MCGRP_SCAN] = { .name = NL80211_MULTICAST_GROUP_SCAN },
  52         [NL80211_MCGRP_REGULATORY] = { .name = NL80211_MULTICAST_GROUP_REG },
  53         [NL80211_MCGRP_MLME] = { .name = NL80211_MULTICAST_GROUP_MLME },
  54         [NL80211_MCGRP_VENDOR] = { .name = NL80211_MULTICAST_GROUP_VENDOR },
  55         [NL80211_MCGRP_NAN] = { .name = NL80211_MULTICAST_GROUP_NAN },
  56 #ifdef CONFIG_NL80211_TESTMODE
  57         [NL80211_MCGRP_TESTMODE] = { .name = NL80211_MULTICAST_GROUP_TESTMODE }
  58 #endif
  59 };
  60
  61 /* returns ERR_PTR values */
  62 static struct wireless_dev *
  63 __cfg80211_wdev_from_attrs(struct net *netns, struct nlattr **attrs)
  64 {
  65         struct cfg80211_registered_device *rdev;
  66         struct wireless_dev *result = NULL;
  67         bool have_ifidx = attrs[NL80211_ATTR_IFINDEX];
  68         bool have_wdev_id = attrs[NL80211_ATTR_WDEV];
  69         u64 wdev_id;
  70         int wiphy_idx = -1;
  71         int ifidx = -1;
  72
  73         ASSERT_RTNL();
  74
  75         if (!have_ifidx && !have_wdev_id)
  76                 return ERR_PTR(-EINVAL);
  77
  78         if (have_ifidx)
  79                 ifidx = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
  80         if (have_wdev_id) {
  81                 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
  82                 wiphy_idx = wdev_id >> 32;
  83         }
  84
  85         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
  86                 struct wireless_dev *wdev;
  87
  88                 if (wiphy_net(&rdev->wiphy) != netns)
  89                         continue;
  90
  91                 if (have_wdev_id && rdev->wiphy_idx != wiphy_idx)
  92                         continue;
  93
  94                 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
  95                         if (have_ifidx && wdev->netdev &&
  96                             wdev->netdev->ifindex == ifidx) {
  97                                 result = wdev;
  98                                 break;
  99                         }
 100                         if (have_wdev_id && wdev->identifier == (u32)wdev_id) {
 101                                 result = wdev;
 102                                 break;
 103                         }
 104                 }
 105
 106                 if (result)
 107                         break;
 108         }
 109
 110         if (result)
 111                 return result;
 112         return ERR_PTR(-ENODEV);
 113 }
 114
 115 static struct cfg80211_registered_device *
 116 __cfg80211_rdev_from_attrs(struct net *netns, struct nlattr **attrs)
 117 {
 118         struct cfg80211_registered_device *rdev = NULL, *tmp;
 119         struct net_device *netdev;
 120
 121         ASSERT_RTNL();
 122
 123         if (!attrs[NL80211_ATTR_WIPHY] &&
 124             !attrs[NL80211_ATTR_IFINDEX] &&
 125             !attrs[NL80211_ATTR_WDEV])
 126                 return ERR_PTR(-EINVAL);
 127
 128         if (attrs[NL80211_ATTR_WIPHY])
 129                 rdev = cfg80211_rdev_by_wiphy_idx(
 130                                 nla_get_u32(attrs[NL80211_ATTR_WIPHY]));
 131
 132         if (attrs[NL80211_ATTR_WDEV]) {
 133                 u64 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
 134                 struct wireless_dev *wdev;
 135                 bool found = false;
 136
 137                 tmp = cfg80211_rdev_by_wiphy_idx(wdev_id >> 32);
 138                 if (tmp) {
 139                         /* make sure wdev exists */
 140                         list_for_each_entry(wdev, &tmp->wiphy.wdev_list, list) {
 141                                 if (wdev->identifier != (u32)wdev_id)
 142                                         continue;
 143                                 found = true;
 144                                 break;
 145                         }
 146
 147                         if (!found)
 148                                 tmp = NULL;
 149
 150                         if (rdev && tmp != rdev)
 151                                 return ERR_PTR(-EINVAL);
 152                         rdev = tmp;
 153                 }
 154         }
 155
 156         if (attrs[NL80211_ATTR_IFINDEX]) {
 157                 int ifindex = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
 158
 159                 netdev = __dev_get_by_index(netns, ifindex);
 160                 if (netdev) {
 161                         if (netdev->ieee80211_ptr)
 162                                 tmp = wiphy_to_rdev(
 163                                         netdev->ieee80211_ptr->wiphy);
 164                         else
 165                                 tmp = NULL;
 166
 167                         /* not wireless device -- return error */
 168                         if (!tmp)
 169                                 return ERR_PTR(-EINVAL);
 170
 171                         /* mismatch -- return error */
 172                         if (rdev && tmp != rdev)
 173                                 return ERR_PTR(-EINVAL);
 174
 175                         rdev = tmp;
 176                 }
 177         }
 178
 179         if (!rdev)
 180                 return ERR_PTR(-ENODEV);
 181
 182         if (netns != wiphy_net(&rdev->wiphy))
 183                 return ERR_PTR(-ENODEV);
 184
 185         return rdev;
 186 }
 187
 188 /*
 189  * This function returns a pointer to the driver
 190  * that the genl_info item that is passed refers to.
 191  *
 192  * The result of this can be a PTR_ERR and hence must
 193  * be checked with IS_ERR() for errors.
 194  */
 195 static struct cfg80211_registered_device *
 196 cfg80211_get_dev_from_info(struct net *netns, struct genl_info *info)
 197 {
 198         return __cfg80211_rdev_from_attrs(netns, info->attrs);
 199 }
 200
 201 /* policy for the attributes */
 202 static const struct nla_policy nl80211_policy[NUM_NL80211_ATTR] = {
 203         [NL80211_ATTR_WIPHY] = { .type = NLA_U32 },
 204         [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING,
 205                                       .len = 20-1 },
 206         [NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED },
 207
 208         [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 },
 209         [NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 },
 210         [NL80211_ATTR_CHANNEL_WIDTH] = { .type = NLA_U32 },
 211         [NL80211_ATTR_CENTER_FREQ1] = { .type = NLA_U32 },
 212         [NL80211_ATTR_CENTER_FREQ2] = { .type = NLA_U32 },
 213
 214         [NL80211_ATTR_WIPHY_RETRY_SHORT] = { .type = NLA_U8 },
 215         [NL80211_ATTR_WIPHY_RETRY_LONG] = { .type = NLA_U8 },
 216         [NL80211_ATTR_WIPHY_FRAG_THRESHOLD] = { .type = NLA_U32 },
 217         [NL80211_ATTR_WIPHY_RTS_THRESHOLD] = { .type = NLA_U32 },
 218         [NL80211_ATTR_WIPHY_COVERAGE_CLASS] = { .type = NLA_U8 },
 219         [NL80211_ATTR_WIPHY_DYN_ACK] = { .type = NLA_FLAG },
 220
 221         [NL80211_ATTR_IFTYPE] = { .type = NLA_U32 },
 222         [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 },
 223         [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 },
 224
 225         [NL80211_ATTR_MAC] = { .len = ETH_ALEN },
 226         [NL80211_ATTR_PREV_BSSID] = { .len = ETH_ALEN },
 227
 228         [NL80211_ATTR_KEY] = { .type = NLA_NESTED, },
 229         [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY,
 230                                     .len = WLAN_MAX_KEY_LEN },
 231         [NL80211_ATTR_KEY_IDX] = { .type = NLA_U8 },
 232         [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 },
 233         [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG },
 234         [NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
 235         [NL80211_ATTR_KEY_TYPE] = { .type = NLA_U32 },
 236
 237         [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 },
 238         [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 },
 239         [NL80211_ATTR_BEACON_HEAD] = { .type = NLA_BINARY,
 240                                        .len = IEEE80211_MAX_DATA_LEN },
 241         [NL80211_ATTR_BEACON_TAIL] = { .type = NLA_BINARY,
 242                                        .len = IEEE80211_MAX_DATA_LEN },
 243         [NL80211_ATTR_STA_AID] = { .type = NLA_U16 },
 244         [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED },
 245         [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 },
 246         [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY,
 247                                                .len = NL80211_MAX_SUPP_RATES },
 248         [NL80211_ATTR_STA_PLINK_ACTION] = { .type = NLA_U8 },
 249         [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 },
 250         [NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ },
 251         [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY,
 252                                    .len = IEEE80211_MAX_MESH_ID_LEN },
 253         [NL80211_ATTR_MPATH_NEXT_HOP] = { .type = NLA_U32 },
 254
 255         [NL80211_ATTR_REG_ALPHA2] = { .type = NLA_STRING, .len = 2 },
 256         [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED },
 257
 258         [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 },
 259         [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 },
 260         [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 },
 261         [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY,
 262                                            .len = NL80211_MAX_SUPP_RATES },
 263         [NL80211_ATTR_BSS_HT_OPMODE] = { .type = NLA_U16 },
 264
 265         [NL80211_ATTR_MESH_CONFIG] = { .type = NLA_NESTED },
 266         [NL80211_ATTR_SUPPORT_MESH_AUTH] = { .type = NLA_FLAG },
 267
 268         [NL80211_ATTR_HT_CAPABILITY] = { .len = NL80211_HT_CAPABILITY_LEN },
 269
 270         [NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 },
 271         [NL80211_ATTR_IE] = { .type = NLA_BINARY,
 272                               .len = IEEE80211_MAX_DATA_LEN },
 273         [NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED },
 274         [NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED },
 275
 276         [NL80211_ATTR_SSID] = { .type = NLA_BINARY,
 277                                 .len = IEEE80211_MAX_SSID_LEN },
 278         [NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 },
 279         [NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 },
 280         [NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG },
 281         [NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG },
 282         [NL80211_ATTR_USE_MFP] = { .type = NLA_U32 },
 283         [NL80211_ATTR_STA_FLAGS2] = {
 284                 .len = sizeof(struct nl80211_sta_flag_update),
 285         },
 286         [NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG },
 287         [NL80211_ATTR_CONTROL_PORT_ETHERTYPE] = { .type = NLA_U16 },
 288         [NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT] = { .type = NLA_FLAG },
 289         [NL80211_ATTR_PRIVACY] = { .type = NLA_FLAG },
 290         [NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 },
 291         [NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 },
 292         [NL80211_ATTR_PID] = { .type = NLA_U32 },
 293         [NL80211_ATTR_4ADDR] = { .type = NLA_U8 },
 294         [NL80211_ATTR_PMKID] = { .type = NLA_BINARY,
 295                                  .len = WLAN_PMKID_LEN },
 296         [NL80211_ATTR_DURATION] = { .type = NLA_U32 },
 297         [NL80211_ATTR_COOKIE] = { .type = NLA_U64 },
 298         [NL80211_ATTR_TX_RATES] = { .type = NLA_NESTED },
 299         [NL80211_ATTR_FRAME] = { .type = NLA_BINARY,
 300                                  .len = IEEE80211_MAX_DATA_LEN },
 301         [NL80211_ATTR_FRAME_MATCH] = { .type = NLA_BINARY, },
 302         [NL80211_ATTR_PS_STATE] = { .type = NLA_U32 },
 303         [NL80211_ATTR_CQM] = { .type = NLA_NESTED, },
 304         [NL80211_ATTR_LOCAL_STATE_CHANGE] = { .type = NLA_FLAG },
 305         [NL80211_ATTR_AP_ISOLATE] = { .type = NLA_U8 },
 306         [NL80211_ATTR_WIPHY_TX_POWER_SETTING] = { .type = NLA_U32 },
 307         [NL80211_ATTR_WIPHY_TX_POWER_LEVEL] = { .type = NLA_U32 },
 308         [NL80211_ATTR_FRAME_TYPE] = { .type = NLA_U16 },
 309         [NL80211_ATTR_WIPHY_ANTENNA_TX] = { .type = NLA_U32 },
 310         [NL80211_ATTR_WIPHY_ANTENNA_RX] = { .type = NLA_U32 },
 311         [NL80211_ATTR_MCAST_RATE] = { .type = NLA_U32 },
 312         [NL80211_ATTR_OFFCHANNEL_TX_OK] = { .type = NLA_FLAG },
 313         [NL80211_ATTR_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
 314         [NL80211_ATTR_WOWLAN_TRIGGERS] = { .type = NLA_NESTED },
 315         [NL80211_ATTR_STA_PLINK_STATE] = { .type = NLA_U8 },
 316         [NL80211_ATTR_SCHED_SCAN_INTERVAL] = { .type = NLA_U32 },
 317         [NL80211_ATTR_REKEY_DATA] = { .type = NLA_NESTED },
 318         [NL80211_ATTR_SCAN_SUPP_RATES] = { .type = NLA_NESTED },
 319         [NL80211_ATTR_HIDDEN_SSID] = { .type = NLA_U32 },
 320         [NL80211_ATTR_IE_PROBE_RESP] = { .type = NLA_BINARY,
 321                                          .len = IEEE80211_MAX_DATA_LEN },
 322         [NL80211_ATTR_IE_ASSOC_RESP] = { .type = NLA_BINARY,
 323                                          .len = IEEE80211_MAX_DATA_LEN },
 324         [NL80211_ATTR_ROAM_SUPPORT] = { .type = NLA_FLAG },
 325         [NL80211_ATTR_SCHED_SCAN_MATCH] = { .type = NLA_NESTED },
 326         [NL80211_ATTR_TX_NO_CCK_RATE] = { .type = NLA_FLAG },
 327         [NL80211_ATTR_TDLS_ACTION] = { .type = NLA_U8 },
 328         [NL80211_ATTR_TDLS_DIALOG_TOKEN] = { .type = NLA_U8 },
 329         [NL80211_ATTR_TDLS_OPERATION] = { .type = NLA_U8 },
 330         [NL80211_ATTR_TDLS_SUPPORT] = { .type = NLA_FLAG },
 331         [NL80211_ATTR_TDLS_EXTERNAL_SETUP] = { .type = NLA_FLAG },
 332         [NL80211_ATTR_TDLS_INITIATOR] = { .type = NLA_FLAG },
 333         [NL80211_ATTR_DONT_WAIT_FOR_ACK] = { .type = NLA_FLAG },
 334         [NL80211_ATTR_PROBE_RESP] = { .type = NLA_BINARY,
 335                                       .len = IEEE80211_MAX_DATA_LEN },
 336         [NL80211_ATTR_DFS_REGION] = { .type = NLA_U8 },
 337         [NL80211_ATTR_DISABLE_HT] = { .type = NLA_FLAG },
 338         [NL80211_ATTR_HT_CAPABILITY_MASK] = {
 339                 .len = NL80211_HT_CAPABILITY_LEN
 340         },
 341         [NL80211_ATTR_NOACK_MAP] = { .type = NLA_U16 },
 342         [NL80211_ATTR_INACTIVITY_TIMEOUT] = { .type = NLA_U16 },
 343         [NL80211_ATTR_BG_SCAN_PERIOD] = { .type = NLA_U16 },
 344         [NL80211_ATTR_WDEV] = { .type = NLA_U64 },
 345         [NL80211_ATTR_USER_REG_HINT_TYPE] = { .type = NLA_U32 },
 346         [NL80211_ATTR_AUTH_DATA] = { .type = NLA_BINARY, },
 347         [NL80211_ATTR_VHT_CAPABILITY] = { .len = NL80211_VHT_CAPABILITY_LEN },
 348         [NL80211_ATTR_SCAN_FLAGS] = { .type = NLA_U32 },
 349         [NL80211_ATTR_P2P_CTWINDOW] = { .type = NLA_U8 },
 350         [NL80211_ATTR_P2P_OPPPS] = { .type = NLA_U8 },
 351         [NL80211_ATTR_ACL_POLICY] = {. type = NLA_U32 },
 352         [NL80211_ATTR_MAC_ADDRS] = { .type = NLA_NESTED },
 353         [NL80211_ATTR_STA_CAPABILITY] = { .type = NLA_U16 },
 354         [NL80211_ATTR_STA_EXT_CAPABILITY] = { .type = NLA_BINARY, },
 355         [NL80211_ATTR_SPLIT_WIPHY_DUMP] = { .type = NLA_FLAG, },
 356         [NL80211_ATTR_DISABLE_VHT] = { .type = NLA_FLAG },
 357         [NL80211_ATTR_VHT_CAPABILITY_MASK] = {
 358                 .len = NL80211_VHT_CAPABILITY_LEN,
 359         },
 360         [NL80211_ATTR_MDID] = { .type = NLA_U16 },
 361         [NL80211_ATTR_IE_RIC] = { .type = NLA_BINARY,
 362                                   .len = IEEE80211_MAX_DATA_LEN },
 363         [NL80211_ATTR_PEER_AID] = { .type = NLA_U16 },
 364         [NL80211_ATTR_CH_SWITCH_COUNT] = { .type = NLA_U32 },
 365         [NL80211_ATTR_CH_SWITCH_BLOCK_TX] = { .type = NLA_FLAG },
 366         [NL80211_ATTR_CSA_IES] = { .type = NLA_NESTED },
 367         [NL80211_ATTR_CSA_C_OFF_BEACON] = { .type = NLA_BINARY },
 368         [NL80211_ATTR_CSA_C_OFF_PRESP] = { .type = NLA_BINARY },
 369         [NL80211_ATTR_STA_SUPPORTED_CHANNELS] = { .type = NLA_BINARY },
 370         [NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES] = { .type = NLA_BINARY },
 371         [NL80211_ATTR_HANDLE_DFS] = { .type = NLA_FLAG },
 372         [NL80211_ATTR_OPMODE_NOTIF] = { .type = NLA_U8 },
 373         [NL80211_ATTR_VENDOR_ID] = { .type = NLA_U32 },
 374         [NL80211_ATTR_VENDOR_SUBCMD] = { .type = NLA_U32 },
 375         [NL80211_ATTR_VENDOR_DATA] = { .type = NLA_BINARY },
 376         [NL80211_ATTR_QOS_MAP] = { .type = NLA_BINARY,
 377                                    .len = IEEE80211_QOS_MAP_LEN_MAX },
 378         [NL80211_ATTR_MAC_HINT] = { .len = ETH_ALEN },
 379         [NL80211_ATTR_WIPHY_FREQ_HINT] = { .type = NLA_U32 },
 380         [NL80211_ATTR_TDLS_PEER_CAPABILITY] = { .type = NLA_U32 },
 381         [NL80211_ATTR_SOCKET_OWNER] = { .type = NLA_FLAG },
 382         [NL80211_ATTR_CSA_C_OFFSETS_TX] = { .type = NLA_BINARY },
 383         [NL80211_ATTR_USE_RRM] = { .type = NLA_FLAG },
 384         [NL80211_ATTR_TSID] = { .type = NLA_U8 },
 385         [NL80211_ATTR_USER_PRIO] = { .type = NLA_U8 },
 386         [NL80211_ATTR_ADMITTED_TIME] = { .type = NLA_U16 },
 387         [NL80211_ATTR_SMPS_MODE] = { .type = NLA_U8 },
 388         [NL80211_ATTR_MAC_MASK] = { .len = ETH_ALEN },
 389         [NL80211_ATTR_WIPHY_SELF_MANAGED_REG] = { .type = NLA_FLAG },
 390         [NL80211_ATTR_NETNS_FD] = { .type = NLA_U32 },
 391         [NL80211_ATTR_SCHED_SCAN_DELAY] = { .type = NLA_U32 },
 392         [NL80211_ATTR_REG_INDOOR] = { .type = NLA_FLAG },
 393         [NL80211_ATTR_PBSS] = { .type = NLA_FLAG },
 394         [NL80211_ATTR_BSS_SELECT] = { .type = NLA_NESTED },
 395         [NL80211_ATTR_STA_SUPPORT_P2P_PS] = { .type = NLA_U8 },
 396         [NL80211_ATTR_MU_MIMO_GROUP_DATA] = {
 397                 .len = VHT_MUMIMO_GROUPS_DATA_LEN
 398         },
 399         [NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR] = { .len = ETH_ALEN },
 400         [NL80211_ATTR_NAN_MASTER_PREF] = { .type = NLA_U8 },
 401         [NL80211_ATTR_NAN_DUAL] = { .type = NLA_U8 },
 402         [NL80211_ATTR_NAN_FUNC] = { .type = NLA_NESTED },
 403         [NL80211_ATTR_FILS_KEK] = { .type = NLA_BINARY,
 404                                     .len = FILS_MAX_KEK_LEN },
 405         [NL80211_ATTR_FILS_NONCES] = { .len = 2 * FILS_NONCE_LEN },
 406         [NL80211_ATTR_MULTICAST_TO_UNICAST_ENABLED] = { .type = NLA_FLAG, },
 407         [NL80211_ATTR_BSSID] = { .len = ETH_ALEN },
 408         [NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI] = { .type = NLA_S8 },
 409         [NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST] = {
 410                 .len = sizeof(struct nl80211_bss_select_rssi_adjust)
 411         },
 412         [NL80211_ATTR_TIMEOUT_REASON] = { .type = NLA_U32 },
 413 };
 414
 415 /* policy for the key attributes */
 416 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = {
 417         [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN },
 418         [NL80211_KEY_IDX] = { .type = NLA_U8 },
 419         [NL80211_KEY_CIPHER] = { .type = NLA_U32 },
 420         [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
 421         [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG },
 422         [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG },
 423         [NL80211_KEY_TYPE] = { .type = NLA_U32 },
 424         [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
 425 };
 426
 427 /* policy for the key default flags */
 428 static const struct nla_policy
 429 nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = {
 430         [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG },
 431         [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG },
 432 };
 433
 434 #ifdef CONFIG_PM
 435 /* policy for WoWLAN attributes */
 436 static const struct nla_policy
 437 nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = {
 438         [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG },
 439         [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG },
 440         [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG },
 441         [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED },
 442         [NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG },
 443         [NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG },
 444         [NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG },
 445         [NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG },
 446         [NL80211_WOWLAN_TRIG_TCP_CONNECTION] = { .type = NLA_NESTED },
 447         [NL80211_WOWLAN_TRIG_NET_DETECT] = { .type = NLA_NESTED },
 448 };
 449
 450 static const struct nla_policy
 451 nl80211_wowlan_tcp_policy[NUM_NL80211_WOWLAN_TCP] = {
 452         [NL80211_WOWLAN_TCP_SRC_IPV4] = { .type = NLA_U32 },
 453         [NL80211_WOWLAN_TCP_DST_IPV4] = { .type = NLA_U32 },
 454         [NL80211_WOWLAN_TCP_DST_MAC] = { .len = ETH_ALEN },
 455         [NL80211_WOWLAN_TCP_SRC_PORT] = { .type = NLA_U16 },
 456         [NL80211_WOWLAN_TCP_DST_PORT] = { .type = NLA_U16 },
 457         [NL80211_WOWLAN_TCP_DATA_PAYLOAD] = { .len = 1 },
 458         [NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ] = {
 459                 .len = sizeof(struct nl80211_wowlan_tcp_data_seq)
 460         },
 461         [NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN] = {
 462                 .len = sizeof(struct nl80211_wowlan_tcp_data_token)
 463         },
 464         [NL80211_WOWLAN_TCP_DATA_INTERVAL] = { .type = NLA_U32 },
 465         [NL80211_WOWLAN_TCP_WAKE_PAYLOAD] = { .len = 1 },
 466         [NL80211_WOWLAN_TCP_WAKE_MASK] = { .len = 1 },
 467 };
 468 #endif /* CONFIG_PM */
 469
 470 /* policy for coalesce rule attributes */
 471 static const struct nla_policy
 472 nl80211_coalesce_policy[NUM_NL80211_ATTR_COALESCE_RULE] = {
 473         [NL80211_ATTR_COALESCE_RULE_DELAY] = { .type = NLA_U32 },
 474         [NL80211_ATTR_COALESCE_RULE_CONDITION] = { .type = NLA_U32 },
 475         [NL80211_ATTR_COALESCE_RULE_PKT_PATTERN] = { .type = NLA_NESTED },
 476 };
 477
 478 /* policy for GTK rekey offload attributes */
 479 static const struct nla_policy
 480 nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = {
 481         [NL80211_REKEY_DATA_KEK] = { .len = NL80211_KEK_LEN },
 482         [NL80211_REKEY_DATA_KCK] = { .len = NL80211_KCK_LEN },
 483         [NL80211_REKEY_DATA_REPLAY_CTR] = { .len = NL80211_REPLAY_CTR_LEN },
 484 };
 485
 486 static const struct nla_policy
 487 nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = {
 488         [NL80211_SCHED_SCAN_MATCH_ATTR_SSID] = { .type = NLA_BINARY,
 489                                                  .len = IEEE80211_MAX_SSID_LEN },
 490         [NL80211_SCHED_SCAN_MATCH_ATTR_RSSI] = { .type = NLA_U32 },
 491 };
 492
 493 static const struct nla_policy
 494 nl80211_plan_policy[NL80211_SCHED_SCAN_PLAN_MAX + 1] = {
 495         [NL80211_SCHED_SCAN_PLAN_INTERVAL] = { .type = NLA_U32 },
 496         [NL80211_SCHED_SCAN_PLAN_ITERATIONS] = { .type = NLA_U32 },
 497 };
 498
 499 static const struct nla_policy
 500 nl80211_bss_select_policy[NL80211_BSS_SELECT_ATTR_MAX + 1] = {
 501         [NL80211_BSS_SELECT_ATTR_RSSI] = { .type = NLA_FLAG },
 502         [NL80211_BSS_SELECT_ATTR_BAND_PREF] = { .type = NLA_U32 },
 503         [NL80211_BSS_SELECT_ATTR_RSSI_ADJUST] = {
 504                 .len = sizeof(struct nl80211_bss_select_rssi_adjust)
 505         },
 506 };
 507
 508 /* policy for NAN function attributes */
 509 static const struct nla_policy
 510 nl80211_nan_func_policy[NL80211_NAN_FUNC_ATTR_MAX + 1] = {
 511         [NL80211_NAN_FUNC_TYPE] = { .type = NLA_U8 },
 512         [NL80211_NAN_FUNC_SERVICE_ID] = { .type = NLA_BINARY,
 513                                     .len = NL80211_NAN_FUNC_SERVICE_ID_LEN },
 514         [NL80211_NAN_FUNC_PUBLISH_TYPE] = { .type = NLA_U8 },
 515         [NL80211_NAN_FUNC_PUBLISH_BCAST] = { .type = NLA_FLAG },
 516         [NL80211_NAN_FUNC_SUBSCRIBE_ACTIVE] = { .type = NLA_FLAG },
 517         [NL80211_NAN_FUNC_FOLLOW_UP_ID] = { .type = NLA_U8 },
 518         [NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID] = { .type = NLA_U8 },
 519         [NL80211_NAN_FUNC_FOLLOW_UP_DEST] = { .len = ETH_ALEN },
 520         [NL80211_NAN_FUNC_CLOSE_RANGE] = { .type = NLA_FLAG },
 521         [NL80211_NAN_FUNC_TTL] = { .type = NLA_U32 },
 522         [NL80211_NAN_FUNC_SERVICE_INFO] = { .type = NLA_BINARY,
 523                         .len = NL80211_NAN_FUNC_SERVICE_SPEC_INFO_MAX_LEN },
 524         [NL80211_NAN_FUNC_SRF] = { .type = NLA_NESTED },
 525         [NL80211_NAN_FUNC_RX_MATCH_FILTER] = { .type = NLA_NESTED },
 526         [NL80211_NAN_FUNC_TX_MATCH_FILTER] = { .type = NLA_NESTED },
 527         [NL80211_NAN_FUNC_INSTANCE_ID] = { .type = NLA_U8 },
 528         [NL80211_NAN_FUNC_TERM_REASON] = { .type = NLA_U8 },
 529 };
 530
 531 /* policy for Service Response Filter attributes */
 532 static const struct nla_policy
 533 nl80211_nan_srf_policy[NL80211_NAN_SRF_ATTR_MAX + 1] = {
 534         [NL80211_NAN_SRF_INCLUDE] = { .type = NLA_FLAG },
 535         [NL80211_NAN_SRF_BF] = { .type = NLA_BINARY,
 536                                  .len =  NL80211_NAN_FUNC_SRF_MAX_LEN },
 537         [NL80211_NAN_SRF_BF_IDX] = { .type = NLA_U8 },
 538         [NL80211_NAN_SRF_MAC_ADDRS] = { .type = NLA_NESTED },
 539 };
 540
 541 static int nl80211_prepare_wdev_dump(struct sk_buff *skb,
 542                                      struct netlink_callback *cb,
 543                                      struct cfg80211_registered_device **rdev,
 544                                      struct wireless_dev **wdev)
 545 {
 546         int err;
 547
 548         rtnl_lock();
 549
 550         if (!cb->args[0]) {
 551                 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
 552                                   genl_family_attrbuf(&nl80211_fam),
 553                                   nl80211_fam.maxattr, nl80211_policy);
 554                 if (err)
 555                         goto out_unlock;
 556
 557                 *wdev = __cfg80211_wdev_from_attrs(
 558                                         sock_net(skb->sk),
 559                                         genl_family_attrbuf(&nl80211_fam));
 560                 if (IS_ERR(*wdev)) {
 561                         err = PTR_ERR(*wdev);
 562                         goto out_unlock;
 563                 }
 564                 *rdev = wiphy_to_rdev((*wdev)->wiphy);
 565                 /* 0 is the first index - add 1 to parse only once */
 566                 cb->args[0] = (*rdev)->wiphy_idx + 1;
 567                 cb->args[1] = (*wdev)->identifier;
 568         } else {
 569                 /* subtract the 1 again here */
 570                 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
 571                 struct wireless_dev *tmp;
 572
 573                 if (!wiphy) {
 574                         err = -ENODEV;
 575                         goto out_unlock;
 576                 }
 577                 *rdev = wiphy_to_rdev(wiphy);
 578                 *wdev = NULL;
 579
 580                 list_for_each_entry(tmp, &(*rdev)->wiphy.wdev_list, list) {
 581                         if (tmp->identifier == cb->args[1]) {
 582                                 *wdev = tmp;
 583                                 break;
 584                         }
 585                 }
 586
 587                 if (!*wdev) {
 588                         err = -ENODEV;
 589                         goto out_unlock;
 590                 }
 591         }
 592
 593         return 0;
 594  out_unlock:
 595         rtnl_unlock();
 596         return err;
 597 }
 598
 599 static void nl80211_finish_wdev_dump(struct cfg80211_registered_device *rdev)
 600 {
 601         rtnl_unlock();
 602 }
 603
 604 /* IE validation */
 605 static bool is_valid_ie_attr(const struct nlattr *attr)
 606 {
 607         const u8 *pos;
 608         int len;
 609
 610         if (!attr)
 611                 return true;
 612
 613         pos = nla_data(attr);
 614         len = nla_len(attr);
 615
 616         while (len) {
 617                 u8 elemlen;
 618
 619                 if (len < 2)
 620                         return false;
 621                 len -= 2;
 622
 623                 elemlen = pos[1];
 624                 if (elemlen > len)
 625                         return false;
 626
 627                 len -= elemlen;
 628                 pos += 2 + elemlen;
 629         }
 630
 631         return true;
 632 }
 633
 634 /* message building helper */
 635 static inline void *nl80211hdr_put(struct sk_buff *skb, u32 portid, u32 seq,
 636                                    int flags, u8 cmd)
 637 {
 638         /* since there is no private header just add the generic one */
 639         return genlmsg_put(skb, portid, seq, &nl80211_fam, flags, cmd);
 640 }
 641
 642 static int nl80211_msg_put_channel(struct sk_buff *msg,
 643                                    struct ieee80211_channel *chan,
 644                                    bool large)
 645 {
 646         /* Some channels must be completely excluded from the
 647          * list to protect old user-space tools from breaking
 648          */
 649         if (!large && chan->flags &
 650             (IEEE80211_CHAN_NO_10MHZ | IEEE80211_CHAN_NO_20MHZ))
 651                 return 0;
 652
 653         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ,
 654                         chan->center_freq))
 655                 goto nla_put_failure;
 656
 657         if ((chan->flags & IEEE80211_CHAN_DISABLED) &&
 658             nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED))
 659                 goto nla_put_failure;
 660         if (chan->flags & IEEE80211_CHAN_NO_IR) {
 661                 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IR))
 662                         goto nla_put_failure;
 663                 if (nla_put_flag(msg, __NL80211_FREQUENCY_ATTR_NO_IBSS))
 664                         goto nla_put_failure;
 665         }
 666         if (chan->flags & IEEE80211_CHAN_RADAR) {
 667                 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR))
 668                         goto nla_put_failure;
 669                 if (large) {
 670                         u32 time;
 671
 672                         time = elapsed_jiffies_msecs(chan->dfs_state_entered);
 673
 674                         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_STATE,
 675                                         chan->dfs_state))
 676                                 goto nla_put_failure;
 677                         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_TIME,
 678                                         time))
 679                                 goto nla_put_failure;
 680                         if (nla_put_u32(msg,
 681                                         NL80211_FREQUENCY_ATTR_DFS_CAC_TIME,
 682                                         chan->dfs_cac_ms))
 683                                 goto nla_put_failure;
 684                 }
 685         }
 686
 687         if (large) {
 688                 if ((chan->flags & IEEE80211_CHAN_NO_HT40MINUS) &&
 689                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_MINUS))
 690                         goto nla_put_failure;
 691                 if ((chan->flags & IEEE80211_CHAN_NO_HT40PLUS) &&
 692                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_PLUS))
 693                         goto nla_put_failure;
 694                 if ((chan->flags & IEEE80211_CHAN_NO_80MHZ) &&
 695                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_80MHZ))
 696                         goto nla_put_failure;
 697                 if ((chan->flags & IEEE80211_CHAN_NO_160MHZ) &&
 698                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_160MHZ))
 699                         goto nla_put_failure;
 700                 if ((chan->flags & IEEE80211_CHAN_INDOOR_ONLY) &&
 701                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_INDOOR_ONLY))
 702                         goto nla_put_failure;
 703                 if ((chan->flags & IEEE80211_CHAN_IR_CONCURRENT) &&
 704                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_IR_CONCURRENT))
 705                         goto nla_put_failure;
 706                 if ((chan->flags & IEEE80211_CHAN_NO_20MHZ) &&
 707                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_20MHZ))
 708                         goto nla_put_failure;
 709                 if ((chan->flags & IEEE80211_CHAN_NO_10MHZ) &&
 710                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_10MHZ))
 711                         goto nla_put_failure;
 712         }
 713
 714         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
 715                         DBM_TO_MBM(chan->max_power)))
 716                 goto nla_put_failure;
 717
 718         return 0;
 719
 720  nla_put_failure:
 721         return -ENOBUFS;
 722 }
 723
 724 /* netlink command implementations */
 725
 726 struct key_parse {
 727         struct key_params p;
 728         int idx;
 729         int type;
 730         bool def, defmgmt;
 731         bool def_uni, def_multi;
 732 };
 733
 734 static int nl80211_parse_key_new(struct nlattr *key, struct key_parse *k)
 735 {
 736         struct nlattr *tb[NL80211_KEY_MAX + 1];
 737         int err = nla_parse_nested(tb, NL80211_KEY_MAX, key,
 738                                    nl80211_key_policy);
 739         if (err)
 740                 return err;
 741
 742         k->def = !!tb[NL80211_KEY_DEFAULT];
 743         k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];
 744
 745         if (k->def) {
 746                 k->def_uni = true;
 747                 k->def_multi = true;
 748         }
 749         if (k->defmgmt)
 750                 k->def_multi = true;
 751
 752         if (tb[NL80211_KEY_IDX])
 753                 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);
 754
 755         if (tb[NL80211_KEY_DATA]) {
 756                 k->p.key = nla_data(tb[NL80211_KEY_DATA]);
 757                 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
 758         }
 759
 760         if (tb[NL80211_KEY_SEQ]) {
 761                 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
 762                 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
 763         }
 764
 765         if (tb[NL80211_KEY_CIPHER])
 766                 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);
 767
 768         if (tb[NL80211_KEY_TYPE]) {
 769                 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]);
 770                 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
 771                         return -EINVAL;
 772         }
 773
 774         if (tb[NL80211_KEY_DEFAULT_TYPES]) {
 775                 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
 776
 777                 err = nla_parse_nested(kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
 778                                        tb[NL80211_KEY_DEFAULT_TYPES],
 779                                        nl80211_key_default_policy);
 780                 if (err)
 781                         return err;
 782
 783                 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
 784                 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
 785         }
 786
 787         return 0;
 788 }
 789
 790 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k)
 791 {
 792         if (info->attrs[NL80211_ATTR_KEY_DATA]) {
 793                 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
 794                 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
 795         }
 796
 797         if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
 798                 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
 799                 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
 800         }
 801
 802         if (info->attrs[NL80211_ATTR_KEY_IDX])
 803                 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
 804
 805         if (info->attrs[NL80211_ATTR_KEY_CIPHER])
 806                 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
 807
 808         k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
 809         k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT];
 810
 811         if (k->def) {
 812                 k->def_uni = true;
 813                 k->def_multi = true;
 814         }
 815         if (k->defmgmt)
 816                 k->def_multi = true;
 817
 818         if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
 819                 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
 820                 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
 821                         return -EINVAL;
 822         }
 823
 824         if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) {
 825                 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
 826                 int err = nla_parse_nested(
 827                                 kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
 828                                 info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES],
 829                                 nl80211_key_default_policy);
 830                 if (err)
 831                         return err;
 832
 833                 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
 834                 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
 835         }
 836
 837         return 0;
 838 }
 839
 840 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
 841 {
 842         int err;
 843
 844         memset(k, 0, sizeof(*k));
 845         k->idx = -1;
 846         k->type = -1;
 847
 848         if (info->attrs[NL80211_ATTR_KEY])
 849                 err = nl80211_parse_key_new(info->attrs[NL80211_ATTR_KEY], k);
 850         else
 851                 err = nl80211_parse_key_old(info, k);
 852
 853         if (err)
 854                 return err;
 855
 856         if (k->def && k->defmgmt)
 857                 return -EINVAL;
 858
 859         if (k->defmgmt) {
 860                 if (k->def_uni || !k->def_multi)
 861                         return -EINVAL;
 862         }
 863
 864         if (k->idx != -1) {
 865                 if (k->defmgmt) {
 866                         if (k->idx < 4 || k->idx > 5)
 867                                 return -EINVAL;
 868                 } else if (k->def) {
 869                         if (k->idx < 0 || k->idx > 3)
 870                                 return -EINVAL;
 871                 } else {
 872                         if (k->idx < 0 || k->idx > 5)
 873                                 return -EINVAL;
 874                 }
 875         }
 876
 877         return 0;
 878 }
 879
 880 static struct cfg80211_cached_keys *
 881 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
 882                        struct nlattr *keys, bool *no_ht)
 883 {
 884         struct key_parse parse;
 885         struct nlattr *key;
 886         struct cfg80211_cached_keys *result;
 887         int rem, err, def = 0;
 888         bool have_key = false;
 889
 890         nla_for_each_nested(key, keys, rem) {
 891                 have_key = true;
 892                 break;
 893         }
 894
 895         if (!have_key)
 896                 return NULL;
 897
 898         result = kzalloc(sizeof(*result), GFP_KERNEL);
 899         if (!result)
 900                 return ERR_PTR(-ENOMEM);
 901
 902         result->def = -1;
 903
 904         nla_for_each_nested(key, keys, rem) {
 905                 memset(&parse, 0, sizeof(parse));
 906                 parse.idx = -1;
 907
 908                 err = nl80211_parse_key_new(key, &parse);
 909                 if (err)
 910                         goto error;
 911                 err = -EINVAL;
 912                 if (!parse.p.key)
 913                         goto error;
 914                 if (parse.idx < 0 || parse.idx > 3)
 915                         goto error;
 916                 if (parse.def) {
 917                         if (def)
 918                                 goto error;
 919                         def = 1;
 920                         result->def = parse.idx;
 921                         if (!parse.def_uni || !parse.def_multi)
 922                                 goto error;
 923                 } else if (parse.defmgmt)
 924                         goto error;
 925                 err = cfg80211_validate_key_settings(rdev, &parse.p,
 926                                                      parse.idx, false, NULL);
 927                 if (err)
 928                         goto error;
 929                 if (parse.p.cipher != WLAN_CIPHER_SUITE_WEP40 &&
 930                     parse.p.cipher != WLAN_CIPHER_SUITE_WEP104) {
 931                         err = -EINVAL;
 932                         goto error;
 933                 }
 934                 result->params[parse.idx].cipher = parse.p.cipher;
 935                 result->params[parse.idx].key_len = parse.p.key_len;
 936                 result->params[parse.idx].key = result->data[parse.idx];
 937                 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
 938
 939                 /* must be WEP key if we got here */
 940                 if (no_ht)
 941                         *no_ht = true;
 942         }
 943
 944         if (result->def < 0) {
 945                 err = -EINVAL;
 946                 goto error;
 947         }
 948
 949         return result;
 950  error:
 951         kfree(result);
 952         return ERR_PTR(err);
 953 }
 954
 955 static int nl80211_key_allowed(struct wireless_dev *wdev)
 956 {
 957         ASSERT_WDEV_LOCK(wdev);
 958
 959         switch (wdev->iftype) {
 960         case NL80211_IFTYPE_AP:
 961         case NL80211_IFTYPE_AP_VLAN:
 962         case NL80211_IFTYPE_P2P_GO:
 963         case NL80211_IFTYPE_MESH_POINT:
 964                 break;
 965         case NL80211_IFTYPE_ADHOC:
 966         case NL80211_IFTYPE_STATION:
 967         case NL80211_IFTYPE_P2P_CLIENT:
 968                 if (!wdev->current_bss)
 969                         return -ENOLINK;
 970                 break;
 971         case NL80211_IFTYPE_UNSPECIFIED:
 972         case NL80211_IFTYPE_OCB:
 973         case NL80211_IFTYPE_MONITOR:
 974         case NL80211_IFTYPE_NAN:
 975         case NL80211_IFTYPE_P2P_DEVICE:
 976         case NL80211_IFTYPE_WDS:
 977         case NUM_NL80211_IFTYPES:
 978                 return -EINVAL;
 979         }
 980
 981         return 0;
 982 }
 983
 984 static struct ieee80211_channel *nl80211_get_valid_chan(struct wiphy *wiphy,
 985                                                         struct nlattr *tb)
 986 {
 987         struct ieee80211_channel *chan;
 988
 989         if (tb == NULL)
 990                 return NULL;
 991         chan = ieee80211_get_channel(wiphy, nla_get_u32(tb));
 992         if (!chan || chan->flags & IEEE80211_CHAN_DISABLED)
 993                 return NULL;
 994         return chan;
 995 }
 996
 997 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes)
 998 {
 999         struct nlattr *nl_modes = nla_nest_start(msg, attr);
1000         int i;
1001
1002         if (!nl_modes)
1003                 goto nla_put_failure;
1004
1005         i = 0;
1006         while (ifmodes) {
1007                 if ((ifmodes & 1) && nla_put_flag(msg, i))
1008                         goto nla_put_failure;
1009                 ifmodes >>= 1;
1010                 i++;
1011         }
1012
1013         nla_nest_end(msg, nl_modes);
1014         return 0;
1015
1016 nla_put_failure:
1017         return -ENOBUFS;
1018 }
1019
1020 static int nl80211_put_iface_combinations(struct wiphy *wiphy,
1021                                           struct sk_buff *msg,
1022                                           bool large)
1023 {
1024         struct nlattr *nl_combis;
1025         int i, j;
1026
1027         nl_combis = nla_nest_start(msg,
1028                                 NL80211_ATTR_INTERFACE_COMBINATIONS);
1029         if (!nl_combis)
1030                 goto nla_put_failure;
1031
1032         for (i = 0; i < wiphy->n_iface_combinations; i++) {
1033                 const struct ieee80211_iface_combination *c;
1034                 struct nlattr *nl_combi, *nl_limits;
1035
1036                 c = &wiphy->iface_combinations[i];
1037
1038                 nl_combi = nla_nest_start(msg, i + 1);
1039                 if (!nl_combi)
1040                         goto nla_put_failure;
1041
1042                 nl_limits = nla_nest_start(msg, NL80211_IFACE_COMB_LIMITS);
1043                 if (!nl_limits)
1044                         goto nla_put_failure;
1045
1046                 for (j = 0; j < c->n_limits; j++) {
1047                         struct nlattr *nl_limit;
1048
1049                         nl_limit = nla_nest_start(msg, j + 1);
1050                         if (!nl_limit)
1051                                 goto nla_put_failure;
1052                         if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX,
1053                                         c->limits[j].max))
1054                                 goto nla_put_failure;
1055                         if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES,
1056                                                 c->limits[j].types))
1057                                 goto nla_put_failure;
1058                         nla_nest_end(msg, nl_limit);
1059                 }
1060
1061                 nla_nest_end(msg, nl_limits);
1062
1063                 if (c->beacon_int_infra_match &&
1064                     nla_put_flag(msg, NL80211_IFACE_COMB_STA_AP_BI_MATCH))
1065                         goto nla_put_failure;
1066                 if (nla_put_u32(msg, NL80211_IFACE_COMB_NUM_CHANNELS,
1067                                 c->num_different_channels) ||
1068                     nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM,
1069                                 c->max_interfaces))
1070                         goto nla_put_failure;
1071                 if (large &&
1072                     (nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS,
1073                                 c->radar_detect_widths) ||
1074                      nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_REGIONS,
1075                                 c->radar_detect_regions)))
1076                         goto nla_put_failure;
1077                 if (c->beacon_int_min_gcd &&
1078                     nla_put_u32(msg, NL80211_IFACE_COMB_BI_MIN_GCD,
1079                                 c->beacon_int_min_gcd))
1080                         goto nla_put_failure;
1081
1082                 nla_nest_end(msg, nl_combi);
1083         }
1084
1085         nla_nest_end(msg, nl_combis);
1086
1087         return 0;
1088 nla_put_failure:
1089         return -ENOBUFS;
1090 }
1091
1092 #ifdef CONFIG_PM
1093 static int nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device *rdev,
1094                                         struct sk_buff *msg)
1095 {
1096         const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan->tcp;
1097         struct nlattr *nl_tcp;
1098
1099         if (!tcp)
1100                 return 0;
1101
1102         nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
1103         if (!nl_tcp)
1104                 return -ENOBUFS;
1105
1106         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1107                         tcp->data_payload_max))
1108                 return -ENOBUFS;
1109
1110         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1111                         tcp->data_payload_max))
1112                 return -ENOBUFS;
1113
1114         if (tcp->seq && nla_put_flag(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ))
1115                 return -ENOBUFS;
1116
1117         if (tcp->tok && nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
1118                                 sizeof(*tcp->tok), tcp->tok))
1119                 return -ENOBUFS;
1120
1121         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
1122                         tcp->data_interval_max))
1123                 return -ENOBUFS;
1124
1125         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
1126                         tcp->wake_payload_max))
1127                 return -ENOBUFS;
1128
1129         nla_nest_end(msg, nl_tcp);
1130         return 0;
1131 }
1132
1133 static int nl80211_send_wowlan(struct sk_buff *msg,
1134                                struct cfg80211_registered_device *rdev,
1135                                bool large)
1136 {
1137         struct nlattr *nl_wowlan;
1138
1139         if (!rdev->wiphy.wowlan)
1140                 return 0;
1141
1142         nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED);
1143         if (!nl_wowlan)
1144                 return -ENOBUFS;
1145
1146         if (((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_ANY) &&
1147              nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
1148             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_DISCONNECT) &&
1149              nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
1150             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT) &&
1151              nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
1152             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) &&
1153              nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) ||
1154             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) &&
1155              nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
1156             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) &&
1157              nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
1158             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) &&
1159              nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
1160             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE) &&
1161              nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
1162                 return -ENOBUFS;
1163
1164         if (rdev->wiphy.wowlan->n_patterns) {
1165                 struct nl80211_pattern_support pat = {
1166                         .max_patterns = rdev->wiphy.wowlan->n_patterns,
1167                         .min_pattern_len = rdev->wiphy.wowlan->pattern_min_len,
1168                         .max_pattern_len = rdev->wiphy.wowlan->pattern_max_len,
1169                         .max_pkt_offset = rdev->wiphy.wowlan->max_pkt_offset,
1170                 };
1171
1172                 if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
1173                             sizeof(pat), &pat))
1174                         return -ENOBUFS;
1175         }
1176
1177         if ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_NET_DETECT) &&
1178             nla_put_u32(msg, NL80211_WOWLAN_TRIG_NET_DETECT,
1179                         rdev->wiphy.wowlan->max_nd_match_sets))
1180                 return -ENOBUFS;
1181
1182         if (large && nl80211_send_wowlan_tcp_caps(rdev, msg))
1183                 return -ENOBUFS;
1184
1185         nla_nest_end(msg, nl_wowlan);
1186
1187         return 0;
1188 }
1189 #endif
1190
1191 static int nl80211_send_coalesce(struct sk_buff *msg,
1192                                  struct cfg80211_registered_device *rdev)
1193 {
1194         struct nl80211_coalesce_rule_support rule;
1195
1196         if (!rdev->wiphy.coalesce)
1197                 return 0;
1198
1199         rule.max_rules = rdev->wiphy.coalesce->n_rules;
1200         rule.max_delay = rdev->wiphy.coalesce->max_delay;
1201         rule.pat.max_patterns = rdev->wiphy.coalesce->n_patterns;
1202         rule.pat.min_pattern_len = rdev->wiphy.coalesce->pattern_min_len;
1203         rule.pat.max_pattern_len = rdev->wiphy.coalesce->pattern_max_len;
1204         rule.pat.max_pkt_offset = rdev->wiphy.coalesce->max_pkt_offset;
1205
1206         if (nla_put(msg, NL80211_ATTR_COALESCE_RULE, sizeof(rule), &rule))
1207                 return -ENOBUFS;
1208
1209         return 0;
1210 }
1211
1212 static int nl80211_send_band_rateinfo(struct sk_buff *msg,
1213                                       struct ieee80211_supported_band *sband)
1214 {
1215         struct nlattr *nl_rates, *nl_rate;
1216         struct ieee80211_rate *rate;
1217         int i;
1218
1219         /* add HT info */
1220         if (sband->ht_cap.ht_supported &&
1221             (nla_put(msg, NL80211_BAND_ATTR_HT_MCS_SET,
1222                      sizeof(sband->ht_cap.mcs),
1223                      &sband->ht_cap.mcs) ||
1224              nla_put_u16(msg, NL80211_BAND_ATTR_HT_CAPA,
1225                          sband->ht_cap.cap) ||
1226              nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
1227                         sband->ht_cap.ampdu_factor) ||
1228              nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
1229                         sband->ht_cap.ampdu_density)))
1230                 return -ENOBUFS;
1231
1232         /* add VHT info */
1233         if (sband->vht_cap.vht_supported &&
1234             (nla_put(msg, NL80211_BAND_ATTR_VHT_MCS_SET,
1235                      sizeof(sband->vht_cap.vht_mcs),
1236                      &sband->vht_cap.vht_mcs) ||
1237              nla_put_u32(msg, NL80211_BAND_ATTR_VHT_CAPA,
1238                          sband->vht_cap.cap)))
1239                 return -ENOBUFS;
1240
1241         /* add bitrates */
1242         nl_rates = nla_nest_start(msg, NL80211_BAND_ATTR_RATES);
1243         if (!nl_rates)
1244                 return -ENOBUFS;
1245
1246         for (i = 0; i < sband->n_bitrates; i++) {
1247                 nl_rate = nla_nest_start(msg, i);
1248                 if (!nl_rate)
1249                         return -ENOBUFS;
1250
1251                 rate = &sband->bitrates[i];
1252                 if (nla_put_u32(msg, NL80211_BITRATE_ATTR_RATE,
1253                                 rate->bitrate))
1254                         return -ENOBUFS;
1255                 if ((rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) &&
1256                     nla_put_flag(msg,
1257                                  NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE))
1258                         return -ENOBUFS;
1259
1260                 nla_nest_end(msg, nl_rate);
1261         }
1262
1263         nla_nest_end(msg, nl_rates);
1264
1265         return 0;
1266 }
1267
1268 static int
1269 nl80211_send_mgmt_stypes(struct sk_buff *msg,
1270                          const struct ieee80211_txrx_stypes *mgmt_stypes)
1271 {
1272         u16 stypes;
1273         struct nlattr *nl_ftypes, *nl_ifs;
1274         enum nl80211_iftype ift;
1275         int i;
1276
1277         if (!mgmt_stypes)
1278                 return 0;
1279
1280         nl_ifs = nla_nest_start(msg, NL80211_ATTR_TX_FRAME_TYPES);
1281         if (!nl_ifs)
1282                 return -ENOBUFS;
1283
1284         for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1285                 nl_ftypes = nla_nest_start(msg, ift);
1286                 if (!nl_ftypes)
1287                         return -ENOBUFS;
1288                 i = 0;
1289                 stypes = mgmt_stypes[ift].tx;
1290                 while (stypes) {
1291                         if ((stypes & 1) &&
1292                             nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1293                                         (i << 4) | IEEE80211_FTYPE_MGMT))
1294                                 return -ENOBUFS;
1295                         stypes >>= 1;
1296                         i++;
1297                 }
1298                 nla_nest_end(msg, nl_ftypes);
1299         }
1300
1301         nla_nest_end(msg, nl_ifs);
1302
1303         nl_ifs = nla_nest_start(msg, NL80211_ATTR_RX_FRAME_TYPES);
1304         if (!nl_ifs)
1305                 return -ENOBUFS;
1306
1307         for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1308                 nl_ftypes = nla_nest_start(msg, ift);
1309                 if (!nl_ftypes)
1310                         return -ENOBUFS;
1311                 i = 0;
1312                 stypes = mgmt_stypes[ift].rx;
1313                 while (stypes) {
1314                         if ((stypes & 1) &&
1315                             nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1316                                         (i << 4) | IEEE80211_FTYPE_MGMT))
1317                                 return -ENOBUFS;
1318                         stypes >>= 1;
1319                         i++;
1320                 }
1321                 nla_nest_end(msg, nl_ftypes);
1322         }
1323         nla_nest_end(msg, nl_ifs);
1324
1325         return 0;
1326 }
1327
1328 #define CMD(op, n)                                                      \
1329          do {                                                           \
1330                 if (rdev->ops->op) {                                    \
1331                         i++;                                            \
1332                         if (nla_put_u32(msg, i, NL80211_CMD_ ## n))     \
1333                                 goto nla_put_failure;                   \
1334                 }                                                       \
1335         } while (0)
1336
1337 static int nl80211_add_commands_unsplit(struct cfg80211_registered_device *rdev,
1338                                         struct sk_buff *msg)
1339 {
1340         int i = 0;
1341
1342         /*
1343          * do *NOT* add anything into this function, new things need to be
1344          * advertised only to new versions of userspace that can deal with
1345          * the split (and they can't possibly care about new features...
1346          */
1347         CMD(add_virtual_intf, NEW_INTERFACE);
1348         CMD(change_virtual_intf, SET_INTERFACE);
1349         CMD(add_key, NEW_KEY);
1350         CMD(start_ap, START_AP);
1351         CMD(add_station, NEW_STATION);
1352         CMD(add_mpath, NEW_MPATH);
1353         CMD(update_mesh_config, SET_MESH_CONFIG);
1354         CMD(change_bss, SET_BSS);
1355         CMD(auth, AUTHENTICATE);
1356         CMD(assoc, ASSOCIATE);
1357         CMD(deauth, DEAUTHENTICATE);
1358         CMD(disassoc, DISASSOCIATE);
1359         CMD(join_ibss, JOIN_IBSS);
1360         CMD(join_mesh, JOIN_MESH);
1361         CMD(set_pmksa, SET_PMKSA);
1362         CMD(del_pmksa, DEL_PMKSA);
1363         CMD(flush_pmksa, FLUSH_PMKSA);
1364         if (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)
1365                 CMD(remain_on_channel, REMAIN_ON_CHANNEL);
1366         CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
1367         CMD(mgmt_tx, FRAME);
1368         CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL);
1369         if (rdev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
1370                 i++;
1371                 if (nla_put_u32(msg, i, NL80211_CMD_SET_WIPHY_NETNS))
1372                         goto nla_put_failure;
1373         }
1374         if (rdev->ops->set_monitor_channel || rdev->ops->start_ap ||
1375             rdev->ops->join_mesh) {
1376                 i++;
1377                 if (nla_put_u32(msg, i, NL80211_CMD_SET_CHANNEL))
1378                         goto nla_put_failure;
1379         }
1380         CMD(set_wds_peer, SET_WDS_PEER);
1381         if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) {
1382                 CMD(tdls_mgmt, TDLS_MGMT);
1383                 CMD(tdls_oper, TDLS_OPER);
1384         }
1385         if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN)
1386                 CMD(sched_scan_start, START_SCHED_SCAN);
1387         CMD(probe_client, PROBE_CLIENT);
1388         CMD(set_noack_map, SET_NOACK_MAP);
1389         if (rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) {
1390                 i++;
1391                 if (nla_put_u32(msg, i, NL80211_CMD_REGISTER_BEACONS))
1392                         goto nla_put_failure;
1393         }
1394         CMD(start_p2p_device, START_P2P_DEVICE);
1395         CMD(set_mcast_rate, SET_MCAST_RATE);
1396 #ifdef CONFIG_NL80211_TESTMODE
1397         CMD(testmode_cmd, TESTMODE);
1398 #endif
1399
1400         if (rdev->ops->connect || rdev->ops->auth) {
1401                 i++;
1402                 if (nla_put_u32(msg, i, NL80211_CMD_CONNECT))
1403                         goto nla_put_failure;
1404         }
1405
1406         if (rdev->ops->disconnect || rdev->ops->deauth) {
1407                 i++;
1408                 if (nla_put_u32(msg, i, NL80211_CMD_DISCONNECT))
1409                         goto nla_put_failure;
1410         }
1411
1412         return i;
1413  nla_put_failure:
1414         return -ENOBUFS;
1415 }
1416
1417 struct nl80211_dump_wiphy_state {
1418         s64 filter_wiphy;
1419         long start;
1420         long split_start, band_start, chan_start, capa_start;
1421         bool split;
1422 };
1423
1424 static int nl80211_send_wiphy(struct cfg80211_registered_device *rdev,
1425                               enum nl80211_commands cmd,
1426                               struct sk_buff *msg, u32 portid, u32 seq,
1427                               int flags, struct nl80211_dump_wiphy_state *state)
1428 {
1429         void *hdr;
1430         struct nlattr *nl_bands, *nl_band;
1431         struct nlattr *nl_freqs, *nl_freq;
1432         struct nlattr *nl_cmds;
1433         enum nl80211_band band;
1434         struct ieee80211_channel *chan;
1435         int i;
1436         const struct ieee80211_txrx_stypes *mgmt_stypes =
1437                                 rdev->wiphy.mgmt_stypes;
1438         u32 features;
1439
1440         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
1441         if (!hdr)
1442                 return -ENOBUFS;
1443
1444         if (WARN_ON(!state))
1445                 return -EINVAL;
1446
1447         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
1448             nla_put_string(msg, NL80211_ATTR_WIPHY_NAME,
1449                            wiphy_name(&rdev->wiphy)) ||
1450             nla_put_u32(msg, NL80211_ATTR_GENERATION,
1451                         cfg80211_rdev_list_generation))
1452                 goto nla_put_failure;
1453
1454         if (cmd != NL80211_CMD_NEW_WIPHY)
1455                 goto finish;
1456
1457         switch (state->split_start) {
1458         case 0:
1459                 if (nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
1460                                rdev->wiphy.retry_short) ||
1461                     nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
1462                                rdev->wiphy.retry_long) ||
1463                     nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
1464                                 rdev->wiphy.frag_threshold) ||
1465                     nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
1466                                 rdev->wiphy.rts_threshold) ||
1467                     nla_put_u8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
1468                                rdev->wiphy.coverage_class) ||
1469                     nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
1470                                rdev->wiphy.max_scan_ssids) ||
1471                     nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS,
1472                                rdev->wiphy.max_sched_scan_ssids) ||
1473                     nla_put_u16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
1474                                 rdev->wiphy.max_scan_ie_len) ||
1475                     nla_put_u16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN,
1476                                 rdev->wiphy.max_sched_scan_ie_len) ||
1477                     nla_put_u8(msg, NL80211_ATTR_MAX_MATCH_SETS,
1478                                rdev->wiphy.max_match_sets) ||
1479                     nla_put_u32(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_PLANS,
1480                                 rdev->wiphy.max_sched_scan_plans) ||
1481                     nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_INTERVAL,
1482                                 rdev->wiphy.max_sched_scan_plan_interval) ||
1483                     nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_ITERATIONS,
1484                                 rdev->wiphy.max_sched_scan_plan_iterations))
1485                         goto nla_put_failure;
1486
1487                 if ((rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) &&
1488                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_IBSS_RSN))
1489                         goto nla_put_failure;
1490                 if ((rdev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) &&
1491                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_MESH_AUTH))
1492                         goto nla_put_failure;
1493                 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
1494                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_AP_UAPSD))
1495                         goto nla_put_failure;
1496                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) &&
1497                     nla_put_flag(msg, NL80211_ATTR_ROAM_SUPPORT))
1498                         goto nla_put_failure;
1499                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) &&
1500                     nla_put_flag(msg, NL80211_ATTR_TDLS_SUPPORT))
1501                         goto nla_put_failure;
1502                 if ((rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) &&
1503                     nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP))
1504                         goto nla_put_failure;
1505                 state->split_start++;
1506                 if (state->split)
1507                         break;
1508         case 1:
1509                 if (nla_put(msg, NL80211_ATTR_CIPHER_SUITES,
1510                             sizeof(u32) * rdev->wiphy.n_cipher_suites,
1511                             rdev->wiphy.cipher_suites))
1512                         goto nla_put_failure;
1513
1514                 if (nla_put_u8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
1515                                rdev->wiphy.max_num_pmkids))
1516                         goto nla_put_failure;
1517
1518                 if ((rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
1519                     nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE))
1520                         goto nla_put_failure;
1521
1522                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX,
1523                                 rdev->wiphy.available_antennas_tx) ||
1524                     nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX,
1525                                 rdev->wiphy.available_antennas_rx))
1526                         goto nla_put_failure;
1527
1528                 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) &&
1529                     nla_put_u32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD,
1530                                 rdev->wiphy.probe_resp_offload))
1531                         goto nla_put_failure;
1532
1533                 if ((rdev->wiphy.available_antennas_tx ||
1534                      rdev->wiphy.available_antennas_rx) &&
1535                     rdev->ops->get_antenna) {
1536                         u32 tx_ant = 0, rx_ant = 0;
1537                         int res;
1538
1539                         res = rdev_get_antenna(rdev, &tx_ant, &rx_ant);
1540                         if (!res) {
1541                                 if (nla_put_u32(msg,
1542                                                 NL80211_ATTR_WIPHY_ANTENNA_TX,
1543                                                 tx_ant) ||
1544                                     nla_put_u32(msg,
1545                                                 NL80211_ATTR_WIPHY_ANTENNA_RX,
1546                                                 rx_ant))
1547                                         goto nla_put_failure;
1548                         }
1549                 }
1550
1551                 state->split_start++;
1552                 if (state->split)
1553                         break;
1554         case 2:
1555                 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES,
1556                                         rdev->wiphy.interface_modes))
1557                                 goto nla_put_failure;
1558                 state->split_start++;
1559                 if (state->split)
1560                         break;
1561         case 3:
1562                 nl_bands = nla_nest_start(msg, NL80211_ATTR_WIPHY_BANDS);
1563                 if (!nl_bands)
1564                         goto nla_put_failure;
1565
1566                 for (band = state->band_start;
1567                      band < NUM_NL80211_BANDS; band++) {
1568                         struct ieee80211_supported_band *sband;
1569
1570                         sband = rdev->wiphy.bands[band];
1571
1572                         if (!sband)
1573                                 continue;
1574
1575                         nl_band = nla_nest_start(msg, band);
1576                         if (!nl_band)
1577                                 goto nla_put_failure;
1578
1579                         switch (state->chan_start) {
1580                         case 0:
1581                                 if (nl80211_send_band_rateinfo(msg, sband))
1582                                         goto nla_put_failure;
1583                                 state->chan_start++;
1584                                 if (state->split)
1585                                         break;
1586                         default:
1587                                 /* add frequencies */
1588                                 nl_freqs = nla_nest_start(
1589                                         msg, NL80211_BAND_ATTR_FREQS);
1590                                 if (!nl_freqs)
1591                                         goto nla_put_failure;
1592
1593                                 for (i = state->chan_start - 1;
1594                                      i < sband->n_channels;
1595                                      i++) {
1596                                         nl_freq = nla_nest_start(msg, i);
1597                                         if (!nl_freq)
1598                                                 goto nla_put_failure;
1599
1600                                         chan = &sband->channels[i];
1601
1602                                         if (nl80211_msg_put_channel(
1603                                                         msg, chan,
1604                                                         state->split))
1605                                                 goto nla_put_failure;
1606
1607                                         nla_nest_end(msg, nl_freq);
1608                                         if (state->split)
1609                                                 break;
1610                                 }
1611                                 if (i < sband->n_channels)
1612                                         state->chan_start = i + 2;
1613                                 else
1614                                         state->chan_start = 0;
1615                                 nla_nest_end(msg, nl_freqs);
1616                         }
1617
1618                         nla_nest_end(msg, nl_band);
1619
1620                         if (state->split) {
1621                                 /* start again here */
1622                                 if (state->chan_start)
1623                                         band--;
1624                                 break;
1625                         }
1626                 }
1627                 nla_nest_end(msg, nl_bands);
1628
1629                 if (band < NUM_NL80211_BANDS)
1630                         state->band_start = band + 1;
1631                 else
1632                         state->band_start = 0;
1633
1634                 /* if bands & channels are done, continue outside */
1635                 if (state->band_start == 0 && state->chan_start == 0)
1636                         state->split_start++;
1637                 if (state->split)
1638                         break;
1639         case 4:
1640                 nl_cmds = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_COMMANDS);
1641                 if (!nl_cmds)
1642                         goto nla_put_failure;
1643
1644                 i = nl80211_add_commands_unsplit(rdev, msg);
1645                 if (i < 0)
1646                         goto nla_put_failure;
1647                 if (state->split) {
1648                         CMD(crit_proto_start, CRIT_PROTOCOL_START);
1649                         CMD(crit_proto_stop, CRIT_PROTOCOL_STOP);
1650                         if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH)
1651                                 CMD(channel_switch, CHANNEL_SWITCH);
1652                         CMD(set_qos_map, SET_QOS_MAP);
1653                         if (rdev->wiphy.features &
1654                                         NL80211_FEATURE_SUPPORTS_WMM_ADMISSION)
1655                                 CMD(add_tx_ts, ADD_TX_TS);
1656                         CMD(set_multicast_to_unicast, SET_MULTICAST_TO_UNICAST);
1657                         CMD(update_connect_params, UPDATE_CONNECT_PARAMS);
1658                 }
1659 #undef CMD
1660
1661                 nla_nest_end(msg, nl_cmds);
1662                 state->split_start++;
1663                 if (state->split)
1664                         break;
1665         case 5:
1666                 if (rdev->ops->remain_on_channel &&
1667                     (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) &&
1668                     nla_put_u32(msg,
1669                                 NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
1670                                 rdev->wiphy.max_remain_on_channel_duration))
1671                         goto nla_put_failure;
1672
1673                 if ((rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) &&
1674                     nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK))
1675                         goto nla_put_failure;
1676
1677                 if (nl80211_send_mgmt_stypes(msg, mgmt_stypes))
1678                         goto nla_put_failure;
1679                 state->split_start++;
1680                 if (state->split)
1681                         break;
1682         case 6:
1683 #ifdef CONFIG_PM
1684                 if (nl80211_send_wowlan(msg, rdev, state->split))
1685                         goto nla_put_failure;
1686                 state->split_start++;
1687                 if (state->split)
1688                         break;
1689 #else
1690                 state->split_start++;
1691 #endif
1692         case 7:
1693                 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES,
1694                                         rdev->wiphy.software_iftypes))
1695                         goto nla_put_failure;
1696
1697                 if (nl80211_put_iface_combinations(&rdev->wiphy, msg,
1698                                                    state->split))
1699                         goto nla_put_failure;
1700
1701                 state->split_start++;
1702                 if (state->split)
1703                         break;
1704         case 8:
1705                 if ((rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) &&
1706                     nla_put_u32(msg, NL80211_ATTR_DEVICE_AP_SME,
1707                                 rdev->wiphy.ap_sme_capa))
1708                         goto nla_put_failure;
1709
1710                 features = rdev->wiphy.features;
1711                 /*
1712                  * We can only add the per-channel limit information if the
1713                  * dump is split, otherwise it makes it too big. Therefore
1714                  * only advertise it in that case.
1715                  */
1716                 if (state->split)
1717                         features |= NL80211_FEATURE_ADVERTISE_CHAN_LIMITS;
1718                 if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS, features))
1719                         goto nla_put_failure;
1720
1721                 if (rdev->wiphy.ht_capa_mod_mask &&
1722                     nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK,
1723                             sizeof(*rdev->wiphy.ht_capa_mod_mask),
1724                             rdev->wiphy.ht_capa_mod_mask))
1725                         goto nla_put_failure;
1726
1727                 if (rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME &&
1728                     rdev->wiphy.max_acl_mac_addrs &&
1729                     nla_put_u32(msg, NL80211_ATTR_MAC_ACL_MAX,
1730                                 rdev->wiphy.max_acl_mac_addrs))
1731                         goto nla_put_failure;
1732
1733                 /*
1734                  * Any information below this point is only available to
1735                  * applications that can deal with it being split. This
1736                  * helps ensure that newly added capabilities don't break
1737                  * older tools by overrunning their buffers.
1738                  *
1739                  * We still increment split_start so that in the split
1740                  * case we'll continue with more data in the next round,
1741                  * but break unconditionally so unsplit data stops here.
1742                  */
1743                 state->split_start++;
1744                 break;
1745         case 9:
1746                 if (rdev->wiphy.extended_capabilities &&
1747                     (nla_put(msg, NL80211_ATTR_EXT_CAPA,
1748                              rdev->wiphy.extended_capabilities_len,
1749                              rdev->wiphy.extended_capabilities) ||
1750                      nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
1751                              rdev->wiphy.extended_capabilities_len,
1752                              rdev->wiphy.extended_capabilities_mask)))
1753                         goto nla_put_failure;
1754
1755                 if (rdev->wiphy.vht_capa_mod_mask &&
1756                     nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK,
1757                             sizeof(*rdev->wiphy.vht_capa_mod_mask),
1758                             rdev->wiphy.vht_capa_mod_mask))
1759                         goto nla_put_failure;
1760
1761                 state->split_start++;
1762                 break;
1763         case 10:
1764                 if (nl80211_send_coalesce(msg, rdev))
1765                         goto nla_put_failure;
1766
1767                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ) &&
1768                     (nla_put_flag(msg, NL80211_ATTR_SUPPORT_5_MHZ) ||
1769                      nla_put_flag(msg, NL80211_ATTR_SUPPORT_10_MHZ)))
1770                         goto nla_put_failure;
1771
1772                 if (rdev->wiphy.max_ap_assoc_sta &&
1773                     nla_put_u32(msg, NL80211_ATTR_MAX_AP_ASSOC_STA,
1774                                 rdev->wiphy.max_ap_assoc_sta))
1775                         goto nla_put_failure;
1776
1777                 state->split_start++;
1778                 break;
1779         case 11:
1780                 if (rdev->wiphy.n_vendor_commands) {
1781                         const struct nl80211_vendor_cmd_info *info;
1782                         struct nlattr *nested;
1783
1784                         nested = nla_nest_start(msg, NL80211_ATTR_VENDOR_DATA);
1785                         if (!nested)
1786                                 goto nla_put_failure;
1787
1788                         for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
1789                                 info = &rdev->wiphy.vendor_commands[i].info;
1790                                 if (nla_put(msg, i + 1, sizeof(*info), info))
1791                                         goto nla_put_failure;
1792                         }
1793                         nla_nest_end(msg, nested);
1794                 }
1795
1796                 if (rdev->wiphy.n_vendor_events) {
1797                         const struct nl80211_vendor_cmd_info *info;
1798                         struct nlattr *nested;
1799
1800                         nested = nla_nest_start(msg,
1801                                                 NL80211_ATTR_VENDOR_EVENTS);
1802                         if (!nested)
1803                                 goto nla_put_failure;
1804
1805                         for (i = 0; i < rdev->wiphy.n_vendor_events; i++) {
1806                                 info = &rdev->wiphy.vendor_events[i];
1807                                 if (nla_put(msg, i + 1, sizeof(*info), info))
1808                                         goto nla_put_failure;
1809                         }
1810                         nla_nest_end(msg, nested);
1811                 }
1812                 state->split_start++;
1813                 break;
1814         case 12:
1815                 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH &&
1816                     nla_put_u8(msg, NL80211_ATTR_MAX_CSA_COUNTERS,
1817                                rdev->wiphy.max_num_csa_counters))
1818                         goto nla_put_failure;
1819
1820                 if (rdev->wiphy.regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
1821                     nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
1822                         goto nla_put_failure;
1823
1824                 if (nla_put(msg, NL80211_ATTR_EXT_FEATURES,
1825                             sizeof(rdev->wiphy.ext_features),
1826                             rdev->wiphy.ext_features))
1827                         goto nla_put_failure;
1828
1829                 if (rdev->wiphy.bss_select_support) {
1830                         struct nlattr *nested;
1831                         u32 bss_select_support = rdev->wiphy.bss_select_support;
1832
1833                         nested = nla_nest_start(msg, NL80211_ATTR_BSS_SELECT);
1834                         if (!nested)
1835                                 goto nla_put_failure;
1836
1837                         i = 0;
1838                         while (bss_select_support) {
1839                                 if ((bss_select_support & 1) &&
1840                                     nla_put_flag(msg, i))
1841                                         goto nla_put_failure;
1842                                 i++;
1843                                 bss_select_support >>= 1;
1844                         }
1845                         nla_nest_end(msg, nested);
1846                 }
1847
1848                 state->split_start++;
1849                 break;
1850         case 13:
1851                 if (rdev->wiphy.num_iftype_ext_capab &&
1852                     rdev->wiphy.iftype_ext_capab) {
1853                         struct nlattr *nested_ext_capab, *nested;
1854
1855                         nested = nla_nest_start(msg,
1856                                                 NL80211_ATTR_IFTYPE_EXT_CAPA);
1857                         if (!nested)
1858                                 goto nla_put_failure;
1859
1860                         for (i = state->capa_start;
1861                              i < rdev->wiphy.num_iftype_ext_capab; i++) {
1862                                 const struct wiphy_iftype_ext_capab *capab;
1863
1864                                 capab = &rdev->wiphy.iftype_ext_capab[i];
1865
1866                                 nested_ext_capab = nla_nest_start(msg, i);
1867                                 if (!nested_ext_capab ||
1868                                     nla_put_u32(msg, NL80211_ATTR_IFTYPE,
1869                                                 capab->iftype) ||
1870                                     nla_put(msg, NL80211_ATTR_EXT_CAPA,
1871                                             capab->extended_capabilities_len,
1872                                             capab->extended_capabilities) ||
1873                                     nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
1874                                             capab->extended_capabilities_len,
1875                                             capab->extended_capabilities_mask))
1876                                         goto nla_put_failure;
1877
1878                                 nla_nest_end(msg, nested_ext_capab);
1879                                 if (state->split)
1880                                         break;
1881                         }
1882                         nla_nest_end(msg, nested);
1883                         if (i < rdev->wiphy.num_iftype_ext_capab) {
1884                                 state->capa_start = i + 1;
1885                                 break;
1886                         }
1887                 }
1888
1889                 /* done */
1890                 state->split_start = 0;
1891                 break;
1892         }
1893  finish:
1894         genlmsg_end(msg, hdr);
1895         return 0;
1896
1897  nla_put_failure:
1898         genlmsg_cancel(msg, hdr);
1899         return -EMSGSIZE;
1900 }
1901
1902 static int nl80211_dump_wiphy_parse(struct sk_buff *skb,
1903                                     struct netlink_callback *cb,
1904                                     struct nl80211_dump_wiphy_state *state)
1905 {
1906         struct nlattr **tb = genl_family_attrbuf(&nl80211_fam);
1907         int ret = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
1908                               tb, nl80211_fam.maxattr, nl80211_policy);
1909         /* ignore parse errors for backward compatibility */
1910         if (ret)
1911                 return 0;
1912
1913         state->split = tb[NL80211_ATTR_SPLIT_WIPHY_DUMP];
1914         if (tb[NL80211_ATTR_WIPHY])
1915                 state->filter_wiphy = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
1916         if (tb[NL80211_ATTR_WDEV])
1917                 state->filter_wiphy = nla_get_u64(tb[NL80211_ATTR_WDEV]) >> 32;
1918         if (tb[NL80211_ATTR_IFINDEX]) {
1919                 struct net_device *netdev;
1920                 struct cfg80211_registered_device *rdev;
1921                 int ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
1922
1923                 netdev = __dev_get_by_index(sock_net(skb->sk), ifidx);
1924                 if (!netdev)
1925                         return -ENODEV;
1926                 if (netdev->ieee80211_ptr) {
1927                         rdev = wiphy_to_rdev(
1928                                 netdev->ieee80211_ptr->wiphy);
1929                         state->filter_wiphy = rdev->wiphy_idx;
1930                 }
1931         }
1932
1933         return 0;
1934 }
1935
1936 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
1937 {
1938         int idx = 0, ret;
1939         struct nl80211_dump_wiphy_state *state = (void *)cb->args[0];
1940         struct cfg80211_registered_device *rdev;
1941
1942         rtnl_lock();
1943         if (!state) {
1944                 state = kzalloc(sizeof(*state), GFP_KERNEL);
1945                 if (!state) {
1946                         rtnl_unlock();
1947                         return -ENOMEM;
1948                 }
1949                 state->filter_wiphy = -1;
1950                 ret = nl80211_dump_wiphy_parse(skb, cb, state);
1951                 if (ret) {
1952                         kfree(state);
1953                         rtnl_unlock();
1954                         return ret;
1955                 }
1956                 cb->args[0] = (long)state;
1957         }
1958
1959         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
1960                 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
1961                         continue;
1962                 if (++idx <= state->start)
1963                         continue;
1964                 if (state->filter_wiphy != -1 &&
1965                     state->filter_wiphy != rdev->wiphy_idx)
1966                         continue;
1967                 /* attempt to fit multiple wiphy data chunks into the skb */
1968                 do {
1969                         ret = nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY,
1970                                                  skb,
1971                                                  NETLINK_CB(cb->skb).portid,
1972                                                  cb->nlh->nlmsg_seq,
1973                                                  NLM_F_MULTI, state);
1974                         if (ret < 0) {
1975                                 /*
1976                                  * If sending the wiphy data didn't fit (ENOBUFS
1977                                  * or EMSGSIZE returned), this SKB is still
1978                                  * empty (so it's not too big because another
1979                                  * wiphy dataset is already in the skb) and
1980                                  * we've not tried to adjust the dump allocation
1981                                  * yet ... then adjust the alloc size to be
1982                                  * bigger, and return 1 but with the empty skb.
1983                                  * This results in an empty message being RX'ed
1984                                  * in userspace, but that is ignored.
1985                                  *
1986                                  * We can then retry with the larger buffer.
1987                                  */
1988                                 if ((ret == -ENOBUFS || ret == -EMSGSIZE) &&
1989                                     !skb->len && !state->split &&
1990                                     cb->min_dump_alloc < 4096) {
1991                                         cb->min_dump_alloc = 4096;
1992                                         state->split_start = 0;
1993                                         rtnl_unlock();
1994                                         return 1;
1995                                 }
1996                                 idx--;
1997                                 break;
1998                         }
1999                 } while (state->split_start > 0);
2000                 break;
2001         }
2002         rtnl_unlock();
2003
2004         state->start = idx;
2005
2006         return skb->len;
2007 }
2008
2009 static int nl80211_dump_wiphy_done(struct netlink_callback *cb)
2010 {
2011         kfree((void *)cb->args[0]);
2012         return 0;
2013 }
2014
2015 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
2016 {
2017         struct sk_buff *msg;
2018         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2019         struct nl80211_dump_wiphy_state state = {};
2020
2021         msg = nlmsg_new(4096, GFP_KERNEL);
2022         if (!msg)
2023                 return -ENOMEM;
2024
2025         if (nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY, msg,
2026                                info->snd_portid, info->snd_seq, 0,
2027                                &state) < 0) {
2028                 nlmsg_free(msg);
2029                 return -ENOBUFS;
2030         }
2031
2032         return genlmsg_reply(msg, info);
2033 }
2034
2035 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
2036         [NL80211_TXQ_ATTR_QUEUE]                = { .type = NLA_U8 },
2037         [NL80211_TXQ_ATTR_TXOP]                 = { .type = NLA_U16 },
2038         [NL80211_TXQ_ATTR_CWMIN]                = { .type = NLA_U16 },
2039         [NL80211_TXQ_ATTR_CWMAX]                = { .type = NLA_U16 },
2040         [NL80211_TXQ_ATTR_AIFS]                 = { .type = NLA_U8 },
2041 };
2042
2043 static int parse_txq_params(struct nlattr *tb[],
2044                             struct ieee80211_txq_params *txq_params)
2045 {
2046         if (!tb[NL80211_TXQ_ATTR_AC] || !tb[NL80211_TXQ_ATTR_TXOP] ||
2047             !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
2048             !tb[NL80211_TXQ_ATTR_AIFS])
2049                 return -EINVAL;
2050
2051         txq_params->ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]);
2052         txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
2053         txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
2054         txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
2055         txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
2056
2057         if (txq_params->ac >= NL80211_NUM_ACS)
2058                 return -EINVAL;
2059
2060         return 0;
2061 }
2062
2063 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
2064 {
2065         /*
2066          * You can only set the channel explicitly for WDS interfaces,
2067          * all others have their channel managed via their respective
2068          * "establish a connection" command (connect, join, ...)
2069          *
2070          * For AP/GO and mesh mode, the channel can be set with the
2071          * channel userspace API, but is only stored and passed to the
2072          * low-level driver when the AP starts or the mesh is joined.
2073          * This is for backward compatibility, userspace can also give
2074          * the channel in the start-ap or join-mesh commands instead.
2075          *
2076          * Monitors are special as they are normally slaved to
2077          * whatever else is going on, so they have their own special
2078          * operation to set the monitor channel if possible.
2079          */
2080         return !wdev ||
2081                 wdev->iftype == NL80211_IFTYPE_AP ||
2082                 wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
2083                 wdev->iftype == NL80211_IFTYPE_MONITOR ||
2084                 wdev->iftype == NL80211_IFTYPE_P2P_GO;
2085 }
2086
2087 static int nl80211_parse_chandef(struct cfg80211_registered_device *rdev,
2088                                  struct genl_info *info,
2089                                  struct cfg80211_chan_def *chandef)
2090 {
2091         u32 control_freq;
2092
2093         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
2094                 return -EINVAL;
2095
2096         control_freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
2097
2098         chandef->chan = ieee80211_get_channel(&rdev->wiphy, control_freq);
2099         chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
2100         chandef->center_freq1 = control_freq;
2101         chandef->center_freq2 = 0;
2102
2103         /* Primary channel not allowed */
2104         if (!chandef->chan || chandef->chan->flags & IEEE80211_CHAN_DISABLED)
2105                 return -EINVAL;
2106
2107         if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
2108                 enum nl80211_channel_type chantype;
2109
2110                 chantype = nla_get_u32(
2111                                 info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
2112
2113                 switch (chantype) {
2114                 case NL80211_CHAN_NO_HT:
2115                 case NL80211_CHAN_HT20:
2116                 case NL80211_CHAN_HT40PLUS:
2117                 case NL80211_CHAN_HT40MINUS:
2118                         cfg80211_chandef_create(chandef, chandef->chan,
2119                                                 chantype);
2120                         break;
2121                 default:
2122                         return -EINVAL;
2123                 }
2124         } else if (info->attrs[NL80211_ATTR_CHANNEL_WIDTH]) {
2125                 chandef->width =
2126                         nla_get_u32(info->attrs[NL80211_ATTR_CHANNEL_WIDTH]);
2127                 if (info->attrs[NL80211_ATTR_CENTER_FREQ1])
2128                         chandef->center_freq1 =
2129                                 nla_get_u32(
2130                                         info->attrs[NL80211_ATTR_CENTER_FREQ1]);
2131                 if (info->attrs[NL80211_ATTR_CENTER_FREQ2])
2132                         chandef->center_freq2 =
2133                                 nla_get_u32(
2134                                         info->attrs[NL80211_ATTR_CENTER_FREQ2]);
2135         }
2136
2137         if (!cfg80211_chandef_valid(chandef))
2138                 return -EINVAL;
2139
2140         if (!cfg80211_chandef_usable(&rdev->wiphy, chandef,
2141                                      IEEE80211_CHAN_DISABLED))
2142                 return -EINVAL;
2143
2144         if ((chandef->width == NL80211_CHAN_WIDTH_5 ||
2145              chandef->width == NL80211_CHAN_WIDTH_10) &&
2146             !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ))
2147                 return -EINVAL;
2148
2149         return 0;
2150 }
2151
2152 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
2153                                  struct net_device *dev,
2154                                  struct genl_info *info)
2155 {
2156         struct cfg80211_chan_def chandef;
2157         int result;
2158         enum nl80211_iftype iftype = NL80211_IFTYPE_MONITOR;
2159         struct wireless_dev *wdev = NULL;
2160
2161         if (dev)
2162                 wdev = dev->ieee80211_ptr;
2163         if (!nl80211_can_set_dev_channel(wdev))
2164                 return -EOPNOTSUPP;
2165         if (wdev)
2166                 iftype = wdev->iftype;
2167
2168         result = nl80211_parse_chandef(rdev, info, &chandef);
2169         if (result)
2170                 return result;
2171
2172         switch (iftype) {
2173         case NL80211_IFTYPE_AP:
2174         case NL80211_IFTYPE_P2P_GO:
2175                 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
2176                                                    iftype)) {
2177                         result = -EINVAL;
2178                         break;
2179                 }
2180                 if (wdev->beacon_interval) {
2181                         if (!dev || !rdev->ops->set_ap_chanwidth ||
2182                             !(rdev->wiphy.features &
2183                               NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE)) {
2184                                 result = -EBUSY;
2185                                 break;
2186                         }
2187
2188                         /* Only allow dynamic channel width changes */
2189                         if (chandef.chan != wdev->preset_chandef.chan) {
2190                                 result = -EBUSY;
2191                                 break;
2192                         }
2193                         result = rdev_set_ap_chanwidth(rdev, dev, &chandef);
2194                         if (result)
2195                                 break;
2196                 }
2197                 wdev->preset_chandef = chandef;
2198                 result = 0;
2199                 break;
2200         case NL80211_IFTYPE_MESH_POINT:
2201                 result = cfg80211_set_mesh_channel(rdev, wdev, &chandef);
2202                 break;
2203         case NL80211_IFTYPE_MONITOR:
2204                 result = cfg80211_set_monitor_channel(rdev, &chandef);
2205                 break;
2206         default:
2207                 result = -EINVAL;
2208         }
2209
2210         return result;
2211 }
2212
2213 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
2214 {
2215         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2216         struct net_device *netdev = info->user_ptr[1];
2217
2218         return __nl80211_set_channel(rdev, netdev, info);
2219 }
2220
2221 static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info)
2222 {
2223         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2224         struct net_device *dev = info->user_ptr[1];
2225         struct wireless_dev *wdev = dev->ieee80211_ptr;
2226         const u8 *bssid;
2227
2228         if (!info->attrs[NL80211_ATTR_MAC])
2229                 return -EINVAL;
2230
2231         if (netif_running(dev))
2232                 return -EBUSY;
2233
2234         if (!rdev->ops->set_wds_peer)
2235                 return -EOPNOTSUPP;
2236
2237         if (wdev->iftype != NL80211_IFTYPE_WDS)
2238                 return -EOPNOTSUPP;
2239
2240         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
2241         return rdev_set_wds_peer(rdev, dev, bssid);
2242 }
2243
2244 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
2245 {
2246         struct cfg80211_registered_device *rdev;
2247         struct net_device *netdev = NULL;
2248         struct wireless_dev *wdev;
2249         int result = 0, rem_txq_params = 0;
2250         struct nlattr *nl_txq_params;
2251         u32 changed;
2252         u8 retry_short = 0, retry_long = 0;
2253         u32 frag_threshold = 0, rts_threshold = 0;
2254         u8 coverage_class = 0;
2255
2256         ASSERT_RTNL();
2257
2258         /*
2259          * Try to find the wiphy and netdev. Normally this
2260          * function shouldn't need the netdev, but this is
2261          * done for backward compatibility -- previously
2262          * setting the channel was done per wiphy, but now
2263          * it is per netdev. Previous userland like hostapd
2264          * also passed a netdev to set_wiphy, so that it is
2265          * possible to let that go to the right netdev!
2266          */
2267
2268         if (info->attrs[NL80211_ATTR_IFINDEX]) {
2269                 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
2270
2271                 netdev = __dev_get_by_index(genl_info_net(info), ifindex);
2272                 if (netdev && netdev->ieee80211_ptr)
2273                         rdev = wiphy_to_rdev(netdev->ieee80211_ptr->wiphy);
2274                 else
2275                         netdev = NULL;
2276         }
2277
2278         if (!netdev) {
2279                 rdev = __cfg80211_rdev_from_attrs(genl_info_net(info),
2280                                                   info->attrs);
2281                 if (IS_ERR(rdev))
2282                         return PTR_ERR(rdev);
2283                 wdev = NULL;
2284                 netdev = NULL;
2285                 result = 0;
2286         } else
2287                 wdev = netdev->ieee80211_ptr;
2288
2289         /*
2290          * end workaround code, by now the rdev is available
2291          * and locked, and wdev may or may not be NULL.
2292          */
2293
2294         if (info->attrs[NL80211_ATTR_WIPHY_NAME])
2295                 result = cfg80211_dev_rename(
2296                         rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
2297
2298         if (result)
2299                 return result;
2300
2301         if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
2302                 struct ieee80211_txq_params txq_params;
2303                 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
2304
2305                 if (!rdev->ops->set_txq_params)
2306                         return -EOPNOTSUPP;
2307
2308                 if (!netdev)
2309                         return -EINVAL;
2310
2311                 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2312                     netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2313                         return -EINVAL;
2314
2315                 if (!netif_running(netdev))
2316                         return -ENETDOWN;
2317
2318                 nla_for_each_nested(nl_txq_params,
2319                                     info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
2320                                     rem_txq_params) {
2321                         result = nla_parse_nested(tb, NL80211_TXQ_ATTR_MAX,
2322                                                   nl_txq_params,
2323                                                   txq_params_policy);
2324                         if (result)
2325                                 return result;
2326                         result = parse_txq_params(tb, &txq_params);
2327                         if (result)
2328                                 return result;
2329
2330                         result = rdev_set_txq_params(rdev, netdev,
2331                                                      &txq_params);
2332                         if (result)
2333                                 return result;
2334                 }
2335         }
2336
2337         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
2338                 result = __nl80211_set_channel(
2339                         rdev,
2340                         nl80211_can_set_dev_channel(wdev) ? netdev : NULL,
2341                         info);
2342                 if (result)
2343                         return result;
2344         }
2345
2346         if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
2347                 struct wireless_dev *txp_wdev = wdev;
2348                 enum nl80211_tx_power_setting type;
2349                 int idx, mbm = 0;
2350
2351                 if (!(rdev->wiphy.features & NL80211_FEATURE_VIF_TXPOWER))
2352                         txp_wdev = NULL;
2353
2354                 if (!rdev->ops->set_tx_power)
2355                         return -EOPNOTSUPP;
2356
2357                 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
2358                 type = nla_get_u32(info->attrs[idx]);
2359
2360                 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
2361                     (type != NL80211_TX_POWER_AUTOMATIC))
2362                         return -EINVAL;
2363
2364                 if (type != NL80211_TX_POWER_AUTOMATIC) {
2365                         idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
2366                         mbm = nla_get_u32(info->attrs[idx]);
2367                 }
2368
2369                 result = rdev_set_tx_power(rdev, txp_wdev, type, mbm);
2370                 if (result)
2371                         return result;
2372         }
2373
2374         if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
2375             info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
2376                 u32 tx_ant, rx_ant;
2377
2378                 if ((!rdev->wiphy.available_antennas_tx &&
2379                      !rdev->wiphy.available_antennas_rx) ||
2380                     !rdev->ops->set_antenna)
2381                         return -EOPNOTSUPP;
2382
2383                 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
2384                 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
2385
2386                 /* reject antenna configurations which don't match the
2387                  * available antenna masks, except for the "all" mask */
2388                 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) ||
2389                     (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx)))
2390                         return -EINVAL;
2391
2392                 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx;
2393                 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx;
2394
2395                 result = rdev_set_antenna(rdev, tx_ant, rx_ant);
2396                 if (result)
2397                         return result;
2398         }
2399
2400         changed = 0;
2401
2402         if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
2403                 retry_short = nla_get_u8(
2404                         info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
2405                 if (retry_short == 0)
2406                         return -EINVAL;
2407
2408                 changed |= WIPHY_PARAM_RETRY_SHORT;
2409         }
2410
2411         if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
2412                 retry_long = nla_get_u8(
2413                         info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
2414                 if (retry_long == 0)
2415                         return -EINVAL;
2416
2417                 changed |= WIPHY_PARAM_RETRY_LONG;
2418         }
2419
2420         if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
2421                 frag_threshold = nla_get_u32(
2422                         info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
2423                 if (frag_threshold < 256)
2424                         return -EINVAL;
2425
2426                 if (frag_threshold != (u32) -1) {
2427                         /*
2428                          * Fragments (apart from the last one) are required to
2429                          * have even length. Make the fragmentation code
2430                          * simpler by stripping LSB should someone try to use
2431                          * odd threshold value.
2432                          */
2433                         frag_threshold &= ~0x1;
2434                 }
2435                 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
2436         }
2437
2438         if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
2439                 rts_threshold = nla_get_u32(
2440                         info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
2441                 changed |= WIPHY_PARAM_RTS_THRESHOLD;
2442         }
2443
2444         if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
2445                 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK])
2446                         return -EINVAL;
2447
2448                 coverage_class = nla_get_u8(
2449                         info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
2450                 changed |= WIPHY_PARAM_COVERAGE_CLASS;
2451         }
2452
2453         if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK]) {
2454                 if (!(rdev->wiphy.features & NL80211_FEATURE_ACKTO_ESTIMATION))
2455                         return -EOPNOTSUPP;
2456
2457                 changed |= WIPHY_PARAM_DYN_ACK;
2458         }
2459
2460         if (changed) {
2461                 u8 old_retry_short, old_retry_long;
2462                 u32 old_frag_threshold, old_rts_threshold;
2463                 u8 old_coverage_class;
2464
2465                 if (!rdev->ops->set_wiphy_params)
2466                         return -EOPNOTSUPP;
2467
2468                 old_retry_short = rdev->wiphy.retry_short;
2469                 old_retry_long = rdev->wiphy.retry_long;
2470                 old_frag_threshold = rdev->wiphy.frag_threshold;
2471                 old_rts_threshold = rdev->wiphy.rts_threshold;
2472                 old_coverage_class = rdev->wiphy.coverage_class;
2473
2474                 if (changed & WIPHY_PARAM_RETRY_SHORT)
2475                         rdev->wiphy.retry_short = retry_short;
2476                 if (changed & WIPHY_PARAM_RETRY_LONG)
2477                         rdev->wiphy.retry_long = retry_long;
2478                 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
2479                         rdev->wiphy.frag_threshold = frag_threshold;
2480                 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
2481                         rdev->wiphy.rts_threshold = rts_threshold;
2482                 if (changed & WIPHY_PARAM_COVERAGE_CLASS)
2483                         rdev->wiphy.coverage_class = coverage_class;
2484
2485                 result = rdev_set_wiphy_params(rdev, changed);
2486                 if (result) {
2487                         rdev->wiphy.retry_short = old_retry_short;
2488                         rdev->wiphy.retry_long = old_retry_long;
2489                         rdev->wiphy.frag_threshold = old_frag_threshold;
2490                         rdev->wiphy.rts_threshold = old_rts_threshold;
2491                         rdev->wiphy.coverage_class = old_coverage_class;
2492                         return result;
2493                 }
2494         }
2495         return 0;
2496 }
2497
2498 static inline u64 wdev_id(struct wireless_dev *wdev)
2499 {
2500         return (u64)wdev->identifier |
2501                ((u64)wiphy_to_rdev(wdev->wiphy)->wiphy_idx << 32);
2502 }
2503
2504 static int nl80211_send_chandef(struct sk_buff *msg,
2505                                 const struct cfg80211_chan_def *chandef)
2506 {
2507         if (WARN_ON(!cfg80211_chandef_valid(chandef)))
2508                 return -EINVAL;
2509
2510         if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
2511                         chandef->chan->center_freq))
2512                 return -ENOBUFS;
2513         switch (chandef->width) {
2514         case NL80211_CHAN_WIDTH_20_NOHT:
2515         case NL80211_CHAN_WIDTH_20:
2516         case NL80211_CHAN_WIDTH_40:
2517                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
2518                                 cfg80211_get_chandef_type(chandef)))
2519                         return -ENOBUFS;
2520                 break;
2521         default:
2522                 break;
2523         }
2524         if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, chandef->width))
2525                 return -ENOBUFS;
2526         if (nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1, chandef->center_freq1))
2527                 return -ENOBUFS;
2528         if (chandef->center_freq2 &&
2529             nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2, chandef->center_freq2))
2530                 return -ENOBUFS;
2531         return 0;
2532 }
2533
2534 static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags,
2535                               struct cfg80211_registered_device *rdev,
2536                               struct wireless_dev *wdev, bool removal)
2537 {
2538         struct net_device *dev = wdev->netdev;
2539         u8 cmd = NL80211_CMD_NEW_INTERFACE;
2540         void *hdr;
2541
2542         if (removal)
2543                 cmd = NL80211_CMD_DEL_INTERFACE;
2544
2545         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
2546         if (!hdr)
2547                 return -1;
2548
2549         if (dev &&
2550             (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
2551              nla_put_string(msg, NL80211_ATTR_IFNAME, dev->name)))
2552                 goto nla_put_failure;
2553
2554         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
2555             nla_put_u32(msg, NL80211_ATTR_IFTYPE, wdev->iftype) ||
2556             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
2557                               NL80211_ATTR_PAD) ||
2558             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, wdev_address(wdev)) ||
2559             nla_put_u32(msg, NL80211_ATTR_GENERATION,
2560                         rdev->devlist_generation ^
2561                         (cfg80211_rdev_list_generation << 2)))
2562                 goto nla_put_failure;
2563
2564         if (rdev->ops->get_channel) {
2565                 int ret;
2566                 struct cfg80211_chan_def chandef;
2567
2568                 ret = rdev_get_channel(rdev, wdev, &chandef);
2569                 if (ret == 0) {
2570                         if (nl80211_send_chandef(msg, &chandef))
2571                                 goto nla_put_failure;
2572                 }
2573         }
2574
2575         if (rdev->ops->get_tx_power) {
2576                 int dbm, ret;
2577
2578                 ret = rdev_get_tx_power(rdev, wdev, &dbm);
2579                 if (ret == 0 &&
2580                     nla_put_u32(msg, NL80211_ATTR_WIPHY_TX_POWER_LEVEL,
2581                                 DBM_TO_MBM(dbm)))
2582                         goto nla_put_failure;
2583         }
2584
2585         if (wdev->ssid_len) {
2586                 if (nla_put(msg, NL80211_ATTR_SSID, wdev->ssid_len, wdev->ssid))
2587                         goto nla_put_failure;
2588         }
2589
2590         genlmsg_end(msg, hdr);
2591         return 0;
2592
2593  nla_put_failure:
2594         genlmsg_cancel(msg, hdr);
2595         return -EMSGSIZE;
2596 }
2597
2598 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
2599 {
2600         int wp_idx = 0;
2601         int if_idx = 0;
2602         int wp_start = cb->args[0];
2603         int if_start = cb->args[1];
2604         int filter_wiphy = -1;
2605         struct cfg80211_registered_device *rdev;
2606         struct wireless_dev *wdev;
2607
2608         rtnl_lock();
2609         if (!cb->args[2]) {
2610                 struct nl80211_dump_wiphy_state state = {
2611                         .filter_wiphy = -1,
2612                 };
2613                 int ret;
2614
2615                 ret = nl80211_dump_wiphy_parse(skb, cb, &state);
2616                 if (ret)
2617                         return ret;
2618
2619                 filter_wiphy = state.filter_wiphy;
2620
2621                 /*
2622                  * if filtering, set cb->args[2] to +1 since 0 is the default
2623                  * value needed to determine that parsing is necessary.
2624                  */
2625                 if (filter_wiphy >= 0)
2626                         cb->args[2] = filter_wiphy + 1;
2627                 else
2628                         cb->args[2] = -1;
2629         } else if (cb->args[2] > 0) {
2630                 filter_wiphy = cb->args[2] - 1;
2631         }
2632
2633         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
2634                 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
2635                         continue;
2636                 if (wp_idx < wp_start) {
2637                         wp_idx++;
2638                         continue;
2639                 }
2640
2641                 if (filter_wiphy >= 0 && filter_wiphy != rdev->wiphy_idx)
2642                         continue;
2643
2644                 if_idx = 0;
2645
2646                 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
2647                         if (if_idx < if_start) {
2648                                 if_idx++;
2649                                 continue;
2650                         }
2651                         if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).portid,
2652                                                cb->nlh->nlmsg_seq, NLM_F_MULTI,
2653                                                rdev, wdev, false) < 0) {
2654                                 goto out;
2655                         }
2656                         if_idx++;
2657                 }
2658
2659                 wp_idx++;
2660         }
2661  out:
2662         rtnl_unlock();
2663
2664         cb->args[0] = wp_idx;
2665         cb->args[1] = if_idx;
2666
2667         return skb->len;
2668 }
2669
2670 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
2671 {
2672         struct sk_buff *msg;
2673         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2674         struct wireless_dev *wdev = info->user_ptr[1];
2675
2676         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2677         if (!msg)
2678                 return -ENOMEM;
2679
2680         if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
2681                                rdev, wdev, false) < 0) {
2682                 nlmsg_free(msg);
2683                 return -ENOBUFS;
2684         }
2685
2686         return genlmsg_reply(msg, info);
2687 }
2688
2689 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
2690         [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
2691         [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
2692         [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
2693         [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
2694         [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
2695         [NL80211_MNTR_FLAG_ACTIVE] = { .type = NLA_FLAG },
2696 };
2697
2698 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
2699 {
2700         struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
2701         int flag;
2702
2703         *mntrflags = 0;
2704
2705         if (!nla)
2706                 return -EINVAL;
2707
2708         if (nla_parse_nested(flags, NL80211_MNTR_FLAG_MAX,
2709                              nla, mntr_flags_policy))
2710                 return -EINVAL;
2711
2712         for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
2713                 if (flags[flag])
2714                         *mntrflags |= (1<<flag);
2715
2716         return 0;
2717 }
2718
2719 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
2720                                struct net_device *netdev, u8 use_4addr,
2721                                enum nl80211_iftype iftype)
2722 {
2723         if (!use_4addr) {
2724                 if (netdev && (netdev->priv_flags & IFF_BRIDGE_PORT))
2725                         return -EBUSY;
2726                 return 0;
2727         }
2728
2729         switch (iftype) {
2730         case NL80211_IFTYPE_AP_VLAN:
2731                 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
2732                         return 0;
2733                 break;
2734         case NL80211_IFTYPE_STATION:
2735                 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
2736                         return 0;
2737                 break;
2738         default:
2739                 break;
2740         }
2741
2742         return -EOPNOTSUPP;
2743 }
2744
2745 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
2746 {
2747         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2748         struct vif_params params;
2749         int err;
2750         enum nl80211_iftype otype, ntype;
2751         struct net_device *dev = info->user_ptr[1];
2752         u32 _flags, *flags = NULL;
2753         bool change = false;
2754
2755         memset(&params, 0, sizeof(params));
2756
2757         otype = ntype = dev->ieee80211_ptr->iftype;
2758
2759         if (info->attrs[NL80211_ATTR_IFTYPE]) {
2760                 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
2761                 if (otype != ntype)
2762                         change = true;
2763                 if (ntype > NL80211_IFTYPE_MAX)
2764                         return -EINVAL;
2765         }
2766
2767         if (info->attrs[NL80211_ATTR_MESH_ID]) {
2768                 struct wireless_dev *wdev = dev->ieee80211_ptr;
2769
2770                 if (ntype != NL80211_IFTYPE_MESH_POINT)
2771                         return -EINVAL;
2772                 if (netif_running(dev))
2773                         return -EBUSY;
2774
2775                 wdev_lock(wdev);
2776                 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
2777                              IEEE80211_MAX_MESH_ID_LEN);
2778                 wdev->mesh_id_up_len =
2779                         nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
2780                 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
2781                        wdev->mesh_id_up_len);
2782                 wdev_unlock(wdev);
2783         }
2784
2785         if (info->attrs[NL80211_ATTR_4ADDR]) {
2786                 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
2787                 change = true;
2788                 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
2789                 if (err)
2790                         return err;
2791         } else {
2792                 params.use_4addr = -1;
2793         }
2794
2795         if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
2796                 if (ntype != NL80211_IFTYPE_MONITOR)
2797                         return -EINVAL;
2798                 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
2799                                           &_flags);
2800                 if (err)
2801                         return err;
2802
2803                 flags = &_flags;
2804                 change = true;
2805         }
2806
2807         if (info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]) {
2808                 const u8 *mumimo_groups;
2809                 u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER;
2810
2811                 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag))
2812                         return -EOPNOTSUPP;
2813
2814                 mumimo_groups =
2815                         nla_data(info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]);
2816
2817                 /* bits 0 and 63 are reserved and must be zero */
2818                 if ((mumimo_groups[0] & BIT(7)) ||
2819                     (mumimo_groups[VHT_MUMIMO_GROUPS_DATA_LEN - 1] & BIT(0)))
2820                         return -EINVAL;
2821
2822                 memcpy(params.vht_mumimo_groups, mumimo_groups,
2823                        VHT_MUMIMO_GROUPS_DATA_LEN);
2824                 change = true;
2825         }
2826
2827         if (info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR]) {
2828                 u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER;
2829
2830                 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag))
2831                         return -EOPNOTSUPP;
2832
2833                 nla_memcpy(params.macaddr,
2834                            info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR],
2835                            ETH_ALEN);
2836                 change = true;
2837         }
2838
2839         if (flags && (*flags & MONITOR_FLAG_ACTIVE) &&
2840             !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
2841                 return -EOPNOTSUPP;
2842
2843         if (change)
2844                 err = cfg80211_change_iface(rdev, dev, ntype, flags, &params);
2845         else
2846                 err = 0;
2847
2848         if (!err && params.use_4addr != -1)
2849                 dev->ieee80211_ptr->use_4addr = params.use_4addr;
2850
2851         return err;
2852 }
2853
2854 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
2855 {
2856         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2857         struct vif_params params;
2858         struct wireless_dev *wdev;
2859         struct sk_buff *msg;
2860         int err;
2861         enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
2862         u32 flags;
2863
2864         /* to avoid failing a new interface creation due to pending removal */
2865         cfg80211_destroy_ifaces(rdev);
2866
2867         memset(&params, 0, sizeof(params));
2868
2869         if (!info->attrs[NL80211_ATTR_IFNAME])
2870                 return -EINVAL;
2871
2872         if (info->attrs[NL80211_ATTR_IFTYPE]) {
2873                 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
2874                 if (type > NL80211_IFTYPE_MAX)
2875                         return -EINVAL;
2876         }
2877
2878         if (!rdev->ops->add_virtual_intf ||
2879             !(rdev->wiphy.interface_modes & (1 << type)))
2880                 return -EOPNOTSUPP;
2881
2882         if ((type == NL80211_IFTYPE_P2P_DEVICE || type == NL80211_IFTYPE_NAN ||
2883              rdev->wiphy.features & NL80211_FEATURE_MAC_ON_CREATE) &&
2884             info->attrs[NL80211_ATTR_MAC]) {
2885                 nla_memcpy(params.macaddr, info->attrs[NL80211_ATTR_MAC],
2886                            ETH_ALEN);
2887                 if (!is_valid_ether_addr(params.macaddr))
2888                         return -EADDRNOTAVAIL;
2889         }
2890
2891         if (info->attrs[NL80211_ATTR_4ADDR]) {
2892                 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
2893                 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
2894                 if (err)
2895                         return err;
2896         }
2897
2898         err = parse_monitor_flags(type == NL80211_IFTYPE_MONITOR ?
2899                                   info->attrs[NL80211_ATTR_MNTR_FLAGS] : NULL,
2900                                   &flags);
2901
2902         if (!err && (flags & MONITOR_FLAG_ACTIVE) &&
2903             !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
2904                 return -EOPNOTSUPP;
2905
2906         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2907         if (!msg)
2908                 return -ENOMEM;
2909
2910         wdev = rdev_add_virtual_intf(rdev,
2911                                 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
2912                                 NET_NAME_USER, type, err ? NULL : &flags,
2913                                 &params);
2914         if (WARN_ON(!wdev)) {
2915                 nlmsg_free(msg);
2916                 return -EPROTO;
2917         } else if (IS_ERR(wdev)) {
2918                 nlmsg_free(msg);
2919                 return PTR_ERR(wdev);
2920         }
2921
2922         if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
2923                 wdev->owner_nlportid = info->snd_portid;
2924
2925         switch (type) {
2926         case NL80211_IFTYPE_MESH_POINT:
2927                 if (!info->attrs[NL80211_ATTR_MESH_ID])
2928                         break;
2929                 wdev_lock(wdev);
2930                 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
2931                              IEEE80211_MAX_MESH_ID_LEN);
2932                 wdev->mesh_id_up_len =
2933                         nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
2934                 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
2935                        wdev->mesh_id_up_len);
2936                 wdev_unlock(wdev);
2937                 break;
2938         case NL80211_IFTYPE_NAN:
2939         case NL80211_IFTYPE_P2P_DEVICE:
2940                 /*
2941                  * P2P Device and NAN do not have a netdev, so don't go
2942                  * through the netdev notifier and must be added here
2943                  */
2944                 mutex_init(&wdev->mtx);
2945                 INIT_LIST_HEAD(&wdev->event_list);
2946                 spin_lock_init(&wdev->event_lock);
2947                 INIT_LIST_HEAD(&wdev->mgmt_registrations);
2948                 spin_lock_init(&wdev->mgmt_registrations_lock);
2949
2950                 wdev->identifier = ++rdev->wdev_id;
2951                 list_add_rcu(&wdev->list, &rdev->wiphy.wdev_list);
2952                 rdev->devlist_generation++;
2953                 break;
2954         default:
2955                 break;
2956         }
2957
2958         if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
2959                                rdev, wdev, false) < 0) {
2960                 nlmsg_free(msg);
2961                 return -ENOBUFS;
2962         }
2963
2964         /*
2965          * For wdevs which have no associated netdev object (e.g. of type
2966          * NL80211_IFTYPE_P2P_DEVICE), emit the NEW_INTERFACE event here.
2967          * For all other types, the event will be generated from the
2968          * netdev notifier
2969          */
2970         if (!wdev->netdev)
2971                 nl80211_notify_iface(rdev, wdev, NL80211_CMD_NEW_INTERFACE);
2972
2973         return genlmsg_reply(msg, info);
2974 }
2975
2976 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
2977 {
2978         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2979         struct wireless_dev *wdev = info->user_ptr[1];
2980
2981         if (!rdev->ops->del_virtual_intf)
2982                 return -EOPNOTSUPP;
2983
2984         /*
2985          * If we remove a wireless device without a netdev then clear
2986          * user_ptr[1] so that nl80211_post_doit won't dereference it
2987          * to check if it needs to do dev_put(). Otherwise it crashes
2988          * since the wdev has been freed, unlike with a netdev where
2989          * we need the dev_put() for the netdev to really be freed.
2990          */
2991         if (!wdev->netdev)
2992                 info->user_ptr[1] = NULL;
2993
2994         return rdev_del_virtual_intf(rdev, wdev);
2995 }
2996
2997 static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info)
2998 {
2999         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3000         struct net_device *dev = info->user_ptr[1];
3001         u16 noack_map;
3002
3003         if (!info->attrs[NL80211_ATTR_NOACK_MAP])
3004                 return -EINVAL;
3005
3006         if (!rdev->ops->set_noack_map)
3007                 return -EOPNOTSUPP;
3008
3009         noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]);
3010
3011         return rdev_set_noack_map(rdev, dev, noack_map);
3012 }
3013
3014 struct get_key_cookie {
3015         struct sk_buff *msg;
3016         int error;
3017         int idx;
3018 };
3019
3020 static void get_key_callback(void *c, struct key_params *params)
3021 {
3022         struct nlattr *key;
3023         struct get_key_cookie *cookie = c;
3024
3025         if ((params->key &&
3026              nla_put(cookie->msg, NL80211_ATTR_KEY_DATA,
3027                      params->key_len, params->key)) ||
3028             (params->seq &&
3029              nla_put(cookie->msg, NL80211_ATTR_KEY_SEQ,
3030                      params->seq_len, params->seq)) ||
3031             (params->cipher &&
3032              nla_put_u32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
3033                          params->cipher)))
3034                 goto nla_put_failure;
3035
3036         key = nla_nest_start(cookie->msg, NL80211_ATTR_KEY);
3037         if (!key)
3038                 goto nla_put_failure;
3039
3040         if ((params->key &&
3041              nla_put(cookie->msg, NL80211_KEY_DATA,
3042                      params->key_len, params->key)) ||
3043             (params->seq &&
3044              nla_put(cookie->msg, NL80211_KEY_SEQ,
3045                      params->seq_len, params->seq)) ||
3046             (params->cipher &&
3047              nla_put_u32(cookie->msg, NL80211_KEY_CIPHER,
3048                          params->cipher)))
3049                 goto nla_put_failure;
3050
3051         if (nla_put_u8(cookie->msg, NL80211_ATTR_KEY_IDX, cookie->idx))
3052                 goto nla_put_failure;
3053
3054         nla_nest_end(cookie->msg, key);
3055
3056         return;
3057  nla_put_failure:
3058         cookie->error = 1;
3059 }
3060
3061 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
3062 {
3063         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3064         int err;
3065         struct net_device *dev = info->user_ptr[1];
3066         u8 key_idx = 0;
3067         const u8 *mac_addr = NULL;
3068         bool pairwise;
3069         struct get_key_cookie cookie = {
3070                 .error = 0,
3071         };
3072         void *hdr;
3073         struct sk_buff *msg;
3074
3075         if (info->attrs[NL80211_ATTR_KEY_IDX])
3076                 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
3077
3078         if (key_idx > 5)
3079                 return -EINVAL;
3080
3081         if (info->attrs[NL80211_ATTR_MAC])
3082                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3083
3084         pairwise = !!mac_addr;
3085         if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
3086                 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
3087
3088                 if (kt >= NUM_NL80211_KEYTYPES)
3089                         return -EINVAL;
3090                 if (kt != NL80211_KEYTYPE_GROUP &&
3091                     kt != NL80211_KEYTYPE_PAIRWISE)
3092                         return -EINVAL;
3093                 pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
3094         }
3095
3096         if (!rdev->ops->get_key)
3097                 return -EOPNOTSUPP;
3098
3099         if (!pairwise && mac_addr && !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
3100                 return -ENOENT;
3101
3102         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3103         if (!msg)
3104                 return -ENOMEM;
3105
3106         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
3107                              NL80211_CMD_NEW_KEY);
3108         if (!hdr)
3109                 goto nla_put_failure;
3110
3111         cookie.msg = msg;
3112         cookie.idx = key_idx;
3113
3114         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3115             nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx))
3116                 goto nla_put_failure;
3117         if (mac_addr &&
3118             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
3119                 goto nla_put_failure;
3120
3121         err = rdev_get_key(rdev, dev, key_idx, pairwise, mac_addr, &cookie,
3122                            get_key_callback);
3123
3124         if (err)
3125                 goto free_msg;
3126
3127         if (cookie.error)
3128                 goto nla_put_failure;
3129
3130         genlmsg_end(msg, hdr);
3131         return genlmsg_reply(msg, info);
3132
3133  nla_put_failure:
3134         err = -ENOBUFS;
3135  free_msg:
3136         nlmsg_free(msg);
3137         return err;
3138 }
3139
3140 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
3141 {
3142         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3143         struct key_parse key;
3144         int err;
3145         struct net_device *dev = info->user_ptr[1];
3146
3147         err = nl80211_parse_key(info, &key);
3148         if (err)
3149                 return err;
3150
3151         if (key.idx < 0)
3152                 return -EINVAL;
3153
3154         /* only support setting default key */
3155         if (!key.def && !key.defmgmt)
3156                 return -EINVAL;
3157
3158         wdev_lock(dev->ieee80211_ptr);
3159
3160         if (key.def) {
3161                 if (!rdev->ops->set_default_key) {
3162                         err = -EOPNOTSUPP;
3163                         goto out;
3164                 }
3165
3166                 err = nl80211_key_allowed(dev->ieee80211_ptr);
3167                 if (err)
3168                         goto out;
3169
3170                 err = rdev_set_default_key(rdev, dev, key.idx,
3171                                                  key.def_uni, key.def_multi);
3172
3173                 if (err)
3174                         goto out;
3175
3176 #ifdef CONFIG_CFG80211_WEXT
3177                 dev->ieee80211_ptr->wext.default_key = key.idx;
3178 #endif
3179         } else {
3180                 if (key.def_uni || !key.def_multi) {
3181                         err = -EINVAL;
3182                         goto out;
3183                 }
3184
3185                 if (!rdev->ops->set_default_mgmt_key) {
3186                         err = -EOPNOTSUPP;
3187                         goto out;
3188                 }
3189
3190                 err = nl80211_key_allowed(dev->ieee80211_ptr);
3191                 if (err)
3192                         goto out;
3193
3194                 err = rdev_set_default_mgmt_key(rdev, dev, key.idx);
3195                 if (err)
3196                         goto out;
3197
3198 #ifdef CONFIG_CFG80211_WEXT
3199                 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx;
3200 #endif
3201         }
3202
3203  out:
3204         wdev_unlock(dev->ieee80211_ptr);
3205
3206         return err;
3207 }
3208
3209 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
3210 {
3211         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3212         int err;
3213         struct net_device *dev = info->user_ptr[1];
3214         struct key_parse key;
3215         const u8 *mac_addr = NULL;
3216
3217         err = nl80211_parse_key(info, &key);
3218         if (err)
3219                 return err;
3220
3221         if (!key.p.key)
3222                 return -EINVAL;
3223
3224         if (info->attrs[NL80211_ATTR_MAC])
3225                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3226
3227         if (key.type == -1) {
3228                 if (mac_addr)
3229                         key.type = NL80211_KEYTYPE_PAIRWISE;
3230                 else
3231                         key.type = NL80211_KEYTYPE_GROUP;
3232         }
3233
3234         /* for now */
3235         if (key.type != NL80211_KEYTYPE_PAIRWISE &&
3236             key.type != NL80211_KEYTYPE_GROUP)
3237                 return -EINVAL;
3238
3239         if (!rdev->ops->add_key)
3240                 return -EOPNOTSUPP;
3241
3242         if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
3243                                            key.type == NL80211_KEYTYPE_PAIRWISE,
3244                                            mac_addr))
3245                 return -EINVAL;
3246
3247         wdev_lock(dev->ieee80211_ptr);
3248         err = nl80211_key_allowed(dev->ieee80211_ptr);
3249         if (!err)
3250                 err = rdev_add_key(rdev, dev, key.idx,
3251                                    key.type == NL80211_KEYTYPE_PAIRWISE,
3252                                     mac_addr, &key.p);
3253         wdev_unlock(dev->ieee80211_ptr);
3254
3255         return err;
3256 }
3257
3258 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
3259 {
3260         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3261         int err;
3262         struct net_device *dev = info->user_ptr[1];
3263         u8 *mac_addr = NULL;
3264         struct key_parse key;
3265
3266         err = nl80211_parse_key(info, &key);
3267         if (err)
3268                 return err;
3269
3270         if (info->attrs[NL80211_ATTR_MAC])
3271                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3272
3273         if (key.type == -1) {
3274                 if (mac_addr)
3275                         key.type = NL80211_KEYTYPE_PAIRWISE;
3276                 else
3277                         key.type = NL80211_KEYTYPE_GROUP;
3278         }
3279
3280         /* for now */
3281         if (key.type != NL80211_KEYTYPE_PAIRWISE &&
3282             key.type != NL80211_KEYTYPE_GROUP)
3283                 return -EINVAL;
3284
3285         if (!rdev->ops->del_key)
3286                 return -EOPNOTSUPP;
3287
3288         wdev_lock(dev->ieee80211_ptr);
3289         err = nl80211_key_allowed(dev->ieee80211_ptr);
3290
3291         if (key.type == NL80211_KEYTYPE_GROUP && mac_addr &&
3292             !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
3293                 err = -ENOENT;
3294
3295         if (!err)
3296                 err = rdev_del_key(rdev, dev, key.idx,
3297                                    key.type == NL80211_KEYTYPE_PAIRWISE,
3298                                    mac_addr);
3299
3300 #ifdef CONFIG_CFG80211_WEXT
3301         if (!err) {
3302                 if (key.idx == dev->ieee80211_ptr->wext.default_key)
3303                         dev->ieee80211_ptr->wext.default_key = -1;
3304                 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key)
3305                         dev->ieee80211_ptr->wext.default_mgmt_key = -1;
3306         }
3307 #endif
3308         wdev_unlock(dev->ieee80211_ptr);
3309
3310         return err;
3311 }
3312
3313 /* This function returns an error or the number of nested attributes */
3314 static int validate_acl_mac_addrs(struct nlattr *nl_attr)
3315 {
3316         struct nlattr *attr;
3317         int n_entries = 0, tmp;
3318
3319         nla_for_each_nested(attr, nl_attr, tmp) {
3320                 if (nla_len(attr) != ETH_ALEN)
3321                         return -EINVAL;
3322
3323                 n_entries++;
3324         }
3325
3326         return n_entries;
3327 }
3328
3329 /*
3330  * This function parses ACL information and allocates memory for ACL data.
3331  * On successful return, the calling function is responsible to free the
3332  * ACL buffer returned by this function.
3333  */
3334 static struct cfg80211_acl_data *parse_acl_data(struct wiphy *wiphy,
3335                                                 struct genl_info *info)
3336 {
3337         enum nl80211_acl_policy acl_policy;
3338         struct nlattr *attr;
3339         struct cfg80211_acl_data *acl;
3340         int i = 0, n_entries, tmp;
3341
3342         if (!wiphy->max_acl_mac_addrs)
3343                 return ERR_PTR(-EOPNOTSUPP);
3344
3345         if (!info->attrs[NL80211_ATTR_ACL_POLICY])
3346                 return ERR_PTR(-EINVAL);
3347
3348         acl_policy = nla_get_u32(info->attrs[NL80211_ATTR_ACL_POLICY]);
3349         if (acl_policy != NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED &&
3350             acl_policy != NL80211_ACL_POLICY_DENY_UNLESS_LISTED)
3351                 return ERR_PTR(-EINVAL);
3352
3353         if (!info->attrs[NL80211_ATTR_MAC_ADDRS])
3354                 return ERR_PTR(-EINVAL);
3355
3356         n_entries = validate_acl_mac_addrs(info->attrs[NL80211_ATTR_MAC_ADDRS]);
3357         if (n_entries < 0)
3358                 return ERR_PTR(n_entries);
3359
3360         if (n_entries > wiphy->max_acl_mac_addrs)
3361                 return ERR_PTR(-ENOTSUPP);
3362
3363         acl = kzalloc(sizeof(*acl) + (sizeof(struct mac_address) * n_entries),
3364                       GFP_KERNEL);
3365         if (!acl)
3366                 return ERR_PTR(-ENOMEM);
3367
3368         nla_for_each_nested(attr, info->attrs[NL80211_ATTR_MAC_ADDRS], tmp) {
3369                 memcpy(acl->mac_addrs[i].addr, nla_data(attr), ETH_ALEN);
3370                 i++;
3371         }
3372
3373         acl->n_acl_entries = n_entries;
3374         acl->acl_policy = acl_policy;
3375
3376         return acl;
3377 }
3378
3379 static int nl80211_set_mac_acl(struct sk_buff *skb, struct genl_info *info)
3380 {
3381         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3382         struct net_device *dev = info->user_ptr[1];
3383         struct cfg80211_acl_data *acl;
3384         int err;
3385
3386         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3387             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3388                 return -EOPNOTSUPP;
3389
3390         if (!dev->ieee80211_ptr->beacon_interval)
3391                 return -EINVAL;
3392
3393         acl = parse_acl_data(&rdev->wiphy, info);
3394         if (IS_ERR(acl))
3395                 return PTR_ERR(acl);
3396
3397         err = rdev_set_mac_acl(rdev, dev, acl);
3398
3399         kfree(acl);
3400
3401         return err;
3402 }
3403
3404 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
3405                            u8 *rates, u8 rates_len)
3406 {
3407         u8 i;
3408         u32 mask = 0;
3409
3410         for (i = 0; i < rates_len; i++) {
3411                 int rate = (rates[i] & 0x7f) * 5;
3412                 int ridx;
3413
3414                 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
3415                         struct ieee80211_rate *srate =
3416                                 &sband->bitrates[ridx];
3417                         if (rate == srate->bitrate) {
3418                                 mask |= 1 << ridx;
3419                                 break;
3420                         }
3421                 }
3422                 if (ridx == sband->n_bitrates)
3423                         return 0; /* rate not found */
3424         }
3425
3426         return mask;
3427 }
3428
3429 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband,
3430                                u8 *rates, u8 rates_len,
3431                                u8 mcs[IEEE80211_HT_MCS_MASK_LEN])
3432 {
3433         u8 i;
3434
3435         memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN);
3436
3437         for (i = 0; i < rates_len; i++) {
3438                 int ridx, rbit;
3439
3440                 ridx = rates[i] / 8;
3441                 rbit = BIT(rates[i] % 8);
3442
3443                 /* check validity */
3444                 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN))
3445                         return false;
3446
3447                 /* check availability */
3448                 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit)
3449                         mcs[ridx] |= rbit;
3450                 else
3451                         return false;
3452         }
3453
3454         return true;
3455 }
3456
3457 static u16 vht_mcs_map_to_mcs_mask(u8 vht_mcs_map)
3458 {
3459         u16 mcs_mask = 0;
3460
3461         switch (vht_mcs_map) {
3462         case IEEE80211_VHT_MCS_NOT_SUPPORTED:
3463                 break;
3464         case IEEE80211_VHT_MCS_SUPPORT_0_7:
3465                 mcs_mask = 0x00FF;
3466                 break;
3467         case IEEE80211_VHT_MCS_SUPPORT_0_8:
3468                 mcs_mask = 0x01FF;
3469                 break;
3470         case IEEE80211_VHT_MCS_SUPPORT_0_9:
3471                 mcs_mask = 0x03FF;
3472                 break;
3473         default:
3474                 break;
3475         }
3476
3477         return mcs_mask;
3478 }
3479
3480 static void vht_build_mcs_mask(u16 vht_mcs_map,
3481                                u16 vht_mcs_mask[NL80211_VHT_NSS_MAX])
3482 {
3483         u8 nss;
3484
3485         for (nss = 0; nss < NL80211_VHT_NSS_MAX; nss++) {
3486                 vht_mcs_mask[nss] = vht_mcs_map_to_mcs_mask(vht_mcs_map & 0x03);
3487                 vht_mcs_map >>= 2;
3488         }
3489 }
3490
3491 static bool vht_set_mcs_mask(struct ieee80211_supported_band *sband,
3492                              struct nl80211_txrate_vht *txrate,
3493                              u16 mcs[NL80211_VHT_NSS_MAX])
3494 {
3495         u16 tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
3496         u16 tx_mcs_mask[NL80211_VHT_NSS_MAX] = {};
3497         u8 i;
3498
3499         if (!sband->vht_cap.vht_supported)
3500                 return false;
3501
3502         memset(mcs, 0, sizeof(u16) * NL80211_VHT_NSS_MAX);
3503
3504         /* Build vht_mcs_mask from VHT capabilities */
3505         vht_build_mcs_mask(tx_mcs_map, tx_mcs_mask);
3506
3507         for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
3508                 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i])
3509                         mcs[i] = txrate->mcs[i];
3510                 else
3511                         return false;
3512         }
3513
3514         return true;
3515 }
3516
3517 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
3518         [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
3519                                     .len = NL80211_MAX_SUPP_RATES },
3520         [NL80211_TXRATE_HT] = { .type = NLA_BINARY,
3521                                 .len = NL80211_MAX_SUPP_HT_RATES },
3522         [NL80211_TXRATE_VHT] = { .len = sizeof(struct nl80211_txrate_vht)},
3523         [NL80211_TXRATE_GI] = { .type = NLA_U8 },
3524 };
3525
3526 static int nl80211_parse_tx_bitrate_mask(struct genl_info *info,
3527                                          struct cfg80211_bitrate_mask *mask)
3528 {
3529         struct nlattr *tb[NL80211_TXRATE_MAX + 1];
3530         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3531         int rem, i;
3532         struct nlattr *tx_rates;
3533         struct ieee80211_supported_band *sband;
3534         u16 vht_tx_mcs_map;
3535
3536         memset(mask, 0, sizeof(*mask));
3537         /* Default to all rates enabled */
3538         for (i = 0; i < NUM_NL80211_BANDS; i++) {
3539                 sband = rdev->wiphy.bands[i];
3540
3541                 if (!sband)
3542                         continue;
3543
3544                 mask->control[i].legacy = (1 << sband->n_bitrates) - 1;
3545                 memcpy(mask->control[i].ht_mcs,
3546                        sband->ht_cap.mcs.rx_mask,
3547                        sizeof(mask->control[i].ht_mcs));
3548
3549                 if (!sband->vht_cap.vht_supported)
3550                         continue;
3551
3552                 vht_tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
3553                 vht_build_mcs_mask(vht_tx_mcs_map, mask->control[i].vht_mcs);
3554         }
3555
3556         /* if no rates are given set it back to the defaults */
3557         if (!info->attrs[NL80211_ATTR_TX_RATES])
3558                 goto out;
3559
3560         /* The nested attribute uses enum nl80211_band as the index. This maps
3561          * directly to the enum nl80211_band values used in cfg80211.
3562          */
3563         BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8);
3564         nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem) {
3565                 enum nl80211_band band = nla_type(tx_rates);
3566                 int err;
3567
3568                 if (band < 0 || band >= NUM_NL80211_BANDS)
3569                         return -EINVAL;
3570                 sband = rdev->wiphy.bands[band];
3571                 if (sband == NULL)
3572                         return -EINVAL;
3573                 err = nla_parse_nested(tb, NL80211_TXRATE_MAX, tx_rates,
3574                                        nl80211_txattr_policy);
3575                 if (err)
3576                         return err;
3577                 if (tb[NL80211_TXRATE_LEGACY]) {
3578                         mask->control[band].legacy = rateset_to_mask(
3579                                 sband,
3580                                 nla_data(tb[NL80211_TXRATE_LEGACY]),
3581                                 nla_len(tb[NL80211_TXRATE_LEGACY]));
3582                         if ((mask->control[band].legacy == 0) &&
3583                             nla_len(tb[NL80211_TXRATE_LEGACY]))
3584                                 return -EINVAL;
3585                 }
3586                 if (tb[NL80211_TXRATE_HT]) {
3587                         if (!ht_rateset_to_mask(
3588                                         sband,
3589                                         nla_data(tb[NL80211_TXRATE_HT]),
3590                                         nla_len(tb[NL80211_TXRATE_HT]),
3591                                         mask->control[band].ht_mcs))
3592                                 return -EINVAL;
3593                 }
3594                 if (tb[NL80211_TXRATE_VHT]) {
3595                         if (!vht_set_mcs_mask(
3596                                         sband,
3597                                         nla_data(tb[NL80211_TXRATE_VHT]),
3598                                         mask->control[band].vht_mcs))
3599                                 return -EINVAL;
3600                 }
3601                 if (tb[NL80211_TXRATE_GI]) {
3602                         mask->control[band].gi =
3603                                 nla_get_u8(tb[NL80211_TXRATE_GI]);
3604                         if (mask->control[band].gi > NL80211_TXRATE_FORCE_LGI)
3605                                 return -EINVAL;
3606                 }
3607
3608                 if (mask->control[band].legacy == 0) {
3609                         /* don't allow empty legacy rates if HT or VHT
3610                          * are not even supported.
3611                          */
3612                         if (!(rdev->wiphy.bands[band]->ht_cap.ht_supported ||
3613                               rdev->wiphy.bands[band]->vht_cap.vht_supported))
3614                                 return -EINVAL;
3615
3616                         for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
3617                                 if (mask->control[band].ht_mcs[i])
3618                                         goto out;
3619
3620                         for (i = 0; i < NL80211_VHT_NSS_MAX; i++)
3621                                 if (mask->control[band].vht_mcs[i])
3622                                         goto out;
3623
3624                         /* legacy and mcs rates may not be both empty */
3625                         return -EINVAL;
3626                 }
3627         }
3628
3629 out:
3630         return 0;
3631 }
3632
3633 static int validate_beacon_tx_rate(struct cfg80211_registered_device *rdev,
3634                                    enum nl80211_band band,
3635                                    struct cfg80211_bitrate_mask *beacon_rate)
3636 {
3637         u32 count_ht, count_vht, i;
3638         u32 rate = beacon_rate->control[band].legacy;
3639
3640         /* Allow only one rate */
3641         if (hweight32(rate) > 1)
3642                 return -EINVAL;
3643
3644         count_ht = 0;
3645         for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++) {
3646                 if (hweight8(beacon_rate->control[band].ht_mcs[i]) > 1) {
3647                         return -EINVAL;
3648                 } else if (beacon_rate->control[band].ht_mcs[i]) {
3649                         count_ht++;
3650                         if (count_ht > 1)
3651                                 return -EINVAL;
3652                 }
3653                 if (count_ht && rate)
3654                         return -EINVAL;
3655         }
3656
3657         count_vht = 0;
3658         for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
3659                 if (hweight16(beacon_rate->control[band].vht_mcs[i]) > 1) {
3660                         return -EINVAL;
3661                 } else if (beacon_rate->control[band].vht_mcs[i]) {
3662                         count_vht++;
3663                         if (count_vht > 1)
3664                                 return -EINVAL;
3665                 }
3666                 if (count_vht && rate)
3667                         return -EINVAL;
3668         }
3669
3670         if ((count_ht && count_vht) || (!rate && !count_ht && !count_vht))
3671                 return -EINVAL;
3672
3673         if (rate &&
3674             !wiphy_ext_feature_isset(&rdev->wiphy,
3675                                      NL80211_EXT_FEATURE_BEACON_RATE_LEGACY))
3676                 return -EINVAL;
3677         if (count_ht &&
3678             !wiphy_ext_feature_isset(&rdev->wiphy,
3679                                      NL80211_EXT_FEATURE_BEACON_RATE_HT))
3680                 return -EINVAL;
3681         if (count_vht &&
3682             !wiphy_ext_feature_isset(&rdev->wiphy,
3683                                      NL80211_EXT_FEATURE_BEACON_RATE_VHT))
3684                 return -EINVAL;
3685
3686         return 0;
3687 }
3688
3689 static int nl80211_parse_beacon(struct nlattr *attrs[],
3690                                 struct cfg80211_beacon_data *bcn)
3691 {
3692         bool haveinfo = false;
3693
3694         if (!is_valid_ie_attr(attrs[NL80211_ATTR_BEACON_TAIL]) ||
3695             !is_valid_ie_attr(attrs[NL80211_ATTR_IE]) ||
3696             !is_valid_ie_attr(attrs[NL80211_ATTR_IE_PROBE_RESP]) ||
3697             !is_valid_ie_attr(attrs[NL80211_ATTR_IE_ASSOC_RESP]))
3698                 return -EINVAL;
3699
3700         memset(bcn, 0, sizeof(*bcn));
3701
3702         if (attrs[NL80211_ATTR_BEACON_HEAD]) {
3703                 bcn->head = nla_data(attrs[NL80211_ATTR_BEACON_HEAD]);
3704                 bcn->head_len = nla_len(attrs[NL80211_ATTR_BEACON_HEAD]);
3705                 if (!bcn->head_len)
3706                         return -EINVAL;
3707                 haveinfo = true;
3708         }
3709
3710         if (attrs[NL80211_ATTR_BEACON_TAIL]) {
3711                 bcn->tail = nla_data(attrs[NL80211_ATTR_BEACON_TAIL]);
3712                 bcn->tail_len = nla_len(attrs[NL80211_ATTR_BEACON_TAIL]);
3713                 haveinfo = true;
3714         }
3715
3716         if (!haveinfo)
3717                 return -EINVAL;
3718
3719         if (attrs[NL80211_ATTR_IE]) {
3720                 bcn->beacon_ies = nla_data(attrs[NL80211_ATTR_IE]);
3721                 bcn->beacon_ies_len = nla_len(attrs[NL80211_ATTR_IE]);
3722         }
3723
3724         if (attrs[NL80211_ATTR_IE_PROBE_RESP]) {
3725                 bcn->proberesp_ies =
3726                         nla_data(attrs[NL80211_ATTR_IE_PROBE_RESP]);
3727                 bcn->proberesp_ies_len =
3728                         nla_len(attrs[NL80211_ATTR_IE_PROBE_RESP]);
3729         }
3730
3731         if (attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
3732                 bcn->assocresp_ies =
3733                         nla_data(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
3734                 bcn->assocresp_ies_len =
3735                         nla_len(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
3736         }
3737
3738         if (attrs[NL80211_ATTR_PROBE_RESP]) {
3739                 bcn->probe_resp = nla_data(attrs[NL80211_ATTR_PROBE_RESP]);
3740                 bcn->probe_resp_len = nla_len(attrs[NL80211_ATTR_PROBE_RESP]);
3741         }
3742
3743         return 0;
3744 }
3745
3746 static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev,
3747                                    struct cfg80211_ap_settings *params)
3748 {
3749         struct wireless_dev *wdev;
3750         bool ret = false;
3751
3752         list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
3753                 if (wdev->iftype != NL80211_IFTYPE_AP &&
3754                     wdev->iftype != NL80211_IFTYPE_P2P_GO)
3755                         continue;
3756
3757                 if (!wdev->preset_chandef.chan)
3758                         continue;
3759
3760                 params->chandef = wdev->preset_chandef;
3761                 ret = true;
3762                 break;
3763         }
3764
3765         return ret;
3766 }
3767
3768 static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev,
3769                                     enum nl80211_auth_type auth_type,
3770                                     enum nl80211_commands cmd)
3771 {
3772         if (auth_type > NL80211_AUTHTYPE_MAX)
3773                 return false;
3774
3775         switch (cmd) {
3776         case NL80211_CMD_AUTHENTICATE:
3777                 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
3778                     auth_type == NL80211_AUTHTYPE_SAE)
3779                         return false;
3780                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
3781                                              NL80211_EXT_FEATURE_FILS_STA) &&
3782                     (auth_type == NL80211_AUTHTYPE_FILS_SK ||
3783                      auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
3784                      auth_type == NL80211_AUTHTYPE_FILS_PK))
3785                         return false;
3786                 return true;
3787         case NL80211_CMD_CONNECT:
3788         case NL80211_CMD_START_AP:
3789                 /* SAE not supported yet */
3790                 if (auth_type == NL80211_AUTHTYPE_SAE)
3791                         return false;
3792                 /* FILS not supported yet */
3793                 if (auth_type == NL80211_AUTHTYPE_FILS_SK ||
3794                     auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
3795                     auth_type == NL80211_AUTHTYPE_FILS_PK)
3796                         return false;
3797                 return true;
3798         default:
3799                 return false;
3800         }
3801 }
3802
3803 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
3804 {
3805         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3806         struct net_device *dev = info->user_ptr[1];
3807         struct wireless_dev *wdev = dev->ieee80211_ptr;
3808         struct cfg80211_ap_settings params;
3809         int err;
3810
3811         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3812             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3813                 return -EOPNOTSUPP;
3814
3815         if (!rdev->ops->start_ap)
3816                 return -EOPNOTSUPP;
3817
3818         if (wdev->beacon_interval)
3819                 return -EALREADY;
3820
3821         memset(&params, 0, sizeof(params));
3822
3823         /* these are required for START_AP */
3824         if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
3825             !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
3826             !info->attrs[NL80211_ATTR_BEACON_HEAD])
3827                 return -EINVAL;
3828
3829         err = nl80211_parse_beacon(info->attrs, &params.beacon);
3830         if (err)
3831                 return err;
3832
3833         params.beacon_interval =
3834                 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
3835         params.dtim_period =
3836                 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
3837
3838         err = cfg80211_validate_beacon_int(rdev, dev->ieee80211_ptr->iftype,
3839                                            params.beacon_interval);
3840         if (err)
3841                 return err;
3842
3843         /*
3844          * In theory, some of these attributes should be required here
3845          * but since they were not used when the command was originally
3846          * added, keep them optional for old user space programs to let
3847          * them continue to work with drivers that do not need the
3848          * additional information -- drivers must check!
3849          */
3850         if (info->attrs[NL80211_ATTR_SSID]) {
3851                 params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
3852                 params.ssid_len =
3853                         nla_len(info->attrs[NL80211_ATTR_SSID]);
3854                 if (params.ssid_len == 0 ||
3855                     params.ssid_len > IEEE80211_MAX_SSID_LEN)
3856                         return -EINVAL;
3857         }
3858
3859         if (info->attrs[NL80211_ATTR_HIDDEN_SSID]) {
3860                 params.hidden_ssid = nla_get_u32(
3861                         info->attrs[NL80211_ATTR_HIDDEN_SSID]);
3862                 if (params.hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE &&
3863                     params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_LEN &&
3864                     params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_CONTENTS)
3865                         return -EINVAL;
3866         }
3867
3868         params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
3869
3870         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
3871                 params.auth_type = nla_get_u32(
3872                         info->attrs[NL80211_ATTR_AUTH_TYPE]);
3873                 if (!nl80211_valid_auth_type(rdev, params.auth_type,
3874                                              NL80211_CMD_START_AP))
3875                         return -EINVAL;
3876         } else
3877                 params.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
3878
3879         err = nl80211_crypto_settings(rdev, info, &params.crypto,
3880                                       NL80211_MAX_NR_CIPHER_SUITES);
3881         if (err)
3882                 return err;
3883
3884         if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) {
3885                 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER))
3886                         return -EOPNOTSUPP;
3887                 params.inactivity_timeout = nla_get_u16(
3888                         info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]);
3889         }
3890
3891         if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
3892                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3893                         return -EINVAL;
3894                 params.p2p_ctwindow =
3895                         nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
3896                 if (params.p2p_ctwindow > 127)
3897                         return -EINVAL;
3898                 if (params.p2p_ctwindow != 0 &&
3899                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
3900                         return -EINVAL;
3901         }
3902
3903         if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
3904                 u8 tmp;
3905
3906                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3907                         return -EINVAL;
3908                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
3909                 if (tmp > 1)
3910                         return -EINVAL;
3911                 params.p2p_opp_ps = tmp;
3912                 if (params.p2p_opp_ps != 0 &&
3913                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
3914                         return -EINVAL;
3915         }
3916
3917         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
3918                 err = nl80211_parse_chandef(rdev, info, &params.chandef);
3919                 if (err)
3920                         return err;
3921         } else if (wdev->preset_chandef.chan) {
3922                 params.chandef = wdev->preset_chandef;
3923         } else if (!nl80211_get_ap_channel(rdev, &params))
3924                 return -EINVAL;
3925
3926         if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params.chandef,
3927                                            wdev->iftype))
3928                 return -EINVAL;
3929
3930         if (info->attrs[NL80211_ATTR_TX_RATES]) {
3931                 err = nl80211_parse_tx_bitrate_mask(info, &params.beacon_rate);
3932                 if (err)
3933                         return err;
3934
3935                 err = validate_beacon_tx_rate(rdev, params.chandef.chan->band,
3936                                               &params.beacon_rate);
3937                 if (err)
3938                         return err;
3939         }
3940
3941         if (info->attrs[NL80211_ATTR_SMPS_MODE]) {
3942                 params.smps_mode =
3943                         nla_get_u8(info->attrs[NL80211_ATTR_SMPS_MODE]);
3944                 switch (params.smps_mode) {
3945                 case NL80211_SMPS_OFF:
3946                         break;
3947                 case NL80211_SMPS_STATIC:
3948                         if (!(rdev->wiphy.features &
3949                               NL80211_FEATURE_STATIC_SMPS))
3950                                 return -EINVAL;
3951                         break;
3952                 case NL80211_SMPS_DYNAMIC:
3953                         if (!(rdev->wiphy.features &
3954                               NL80211_FEATURE_DYNAMIC_SMPS))
3955                                 return -EINVAL;
3956                         break;
3957                 default:
3958                         return -EINVAL;
3959                 }
3960         } else {
3961                 params.smps_mode = NL80211_SMPS_OFF;
3962         }
3963
3964         params.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
3965         if (params.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ])
3966                 return -EOPNOTSUPP;
3967
3968         if (info->attrs[NL80211_ATTR_ACL_POLICY]) {
3969                 params.acl = parse_acl_data(&rdev->wiphy, info);
3970                 if (IS_ERR(params.acl))
3971                         return PTR_ERR(params.acl);
3972         }
3973
3974         wdev_lock(wdev);
3975         err = rdev_start_ap(rdev, dev, &params);
3976         if (!err) {
3977                 wdev->preset_chandef = params.chandef;
3978                 wdev->beacon_interval = params.beacon_interval;
3979                 wdev->chandef = params.chandef;
3980                 wdev->ssid_len = params.ssid_len;
3981                 memcpy(wdev->ssid, params.ssid, wdev->ssid_len);
3982         }
3983         wdev_unlock(wdev);
3984
3985         kfree(params.acl);
3986
3987         return err;
3988 }
3989
3990 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info)
3991 {
3992         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3993         struct net_device *dev = info->user_ptr[1];
3994         struct wireless_dev *wdev = dev->ieee80211_ptr;
3995         struct cfg80211_beacon_data params;
3996         int err;
3997
3998         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3999             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4000                 return -EOPNOTSUPP;
4001
4002         if (!rdev->ops->change_beacon)
4003                 return -EOPNOTSUPP;
4004
4005         if (!wdev->beacon_interval)
4006                 return -EINVAL;
4007
4008         err = nl80211_parse_beacon(info->attrs, &params);
4009         if (err)
4010                 return err;
4011
4012         wdev_lock(wdev);
4013         err = rdev_change_beacon(rdev, dev, &params);
4014         wdev_unlock(wdev);
4015
4016         return err;
4017 }
4018
4019 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info)
4020 {
4021         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4022         struct net_device *dev = info->user_ptr[1];
4023
4024         return cfg80211_stop_ap(rdev, dev, false);
4025 }
4026
4027 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
4028         [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
4029         [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
4030         [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
4031         [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
4032         [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
4033         [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG },
4034 };
4035
4036 static int parse_station_flags(struct genl_info *info,
4037                                enum nl80211_iftype iftype,
4038                                struct station_parameters *params)
4039 {
4040         struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
4041         struct nlattr *nla;
4042         int flag;
4043
4044         /*
4045          * Try parsing the new attribute first so userspace
4046          * can specify both for older kernels.
4047          */
4048         nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
4049         if (nla) {
4050                 struct nl80211_sta_flag_update *sta_flags;
4051
4052                 sta_flags = nla_data(nla);
4053                 params->sta_flags_mask = sta_flags->mask;
4054                 params->sta_flags_set = sta_flags->set;
4055                 params->sta_flags_set &= params->sta_flags_mask;
4056                 if ((params->sta_flags_mask |
4057                      params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
4058                         return -EINVAL;
4059                 return 0;
4060         }
4061
4062         /* if present, parse the old attribute */
4063
4064         nla = info->attrs[NL80211_ATTR_STA_FLAGS];
4065         if (!nla)
4066                 return 0;
4067
4068         if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX,
4069                              nla, sta_flags_policy))
4070                 return -EINVAL;
4071
4072         /*
4073          * Only allow certain flags for interface types so that
4074          * other attributes are silently ignored. Remember that
4075          * this is backward compatibility code with old userspace
4076          * and shouldn't be hit in other cases anyway.
4077          */
4078         switch (iftype) {
4079         case NL80211_IFTYPE_AP:
4080         case NL80211_IFTYPE_AP_VLAN:
4081         case NL80211_IFTYPE_P2P_GO:
4082                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
4083                                          BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
4084                                          BIT(NL80211_STA_FLAG_WME) |
4085                                          BIT(NL80211_STA_FLAG_MFP);
4086                 break;
4087         case NL80211_IFTYPE_P2P_CLIENT:
4088         case NL80211_IFTYPE_STATION:
4089                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
4090                                          BIT(NL80211_STA_FLAG_TDLS_PEER);
4091                 break;
4092         case NL80211_IFTYPE_MESH_POINT:
4093                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4094                                          BIT(NL80211_STA_FLAG_MFP) |
4095                                          BIT(NL80211_STA_FLAG_AUTHORIZED);
4096         default:
4097                 return -EINVAL;
4098         }
4099
4100         for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) {
4101                 if (flags[flag]) {
4102                         params->sta_flags_set |= (1<<flag);
4103
4104                         /* no longer support new API additions in old API */
4105                         if (flag > NL80211_STA_FLAG_MAX_OLD_API)
4106                                 return -EINVAL;
4107                 }
4108         }
4109
4110         return 0;
4111 }
4112
4113 static bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info,
4114                                  int attr)
4115 {
4116         struct nlattr *rate;
4117         u32 bitrate;
4118         u16 bitrate_compat;
4119         enum nl80211_attrs rate_flg;
4120
4121         rate = nla_nest_start(msg, attr);
4122         if (!rate)
4123                 return false;
4124
4125         /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
4126         bitrate = cfg80211_calculate_bitrate(info);
4127         /* report 16-bit bitrate only if we can */
4128         bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0;
4129         if (bitrate > 0 &&
4130             nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate))
4131                 return false;
4132         if (bitrate_compat > 0 &&
4133             nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat))
4134                 return false;
4135
4136         switch (info->bw) {
4137         case RATE_INFO_BW_5:
4138                 rate_flg = NL80211_RATE_INFO_5_MHZ_WIDTH;
4139                 break;
4140         case RATE_INFO_BW_10:
4141                 rate_flg = NL80211_RATE_INFO_10_MHZ_WIDTH;
4142                 break;
4143         default:
4144                 WARN_ON(1);
4145                 /* fall through */
4146         case RATE_INFO_BW_20:
4147                 rate_flg = 0;
4148                 break;
4149         case RATE_INFO_BW_40:
4150                 rate_flg = NL80211_RATE_INFO_40_MHZ_WIDTH;
4151                 break;
4152         case RATE_INFO_BW_80:
4153                 rate_flg = NL80211_RATE_INFO_80_MHZ_WIDTH;
4154                 break;
4155         case RATE_INFO_BW_160:
4156                 rate_flg = NL80211_RATE_INFO_160_MHZ_WIDTH;
4157                 break;
4158         }
4159
4160         if (rate_flg && nla_put_flag(msg, rate_flg))
4161                 return false;
4162
4163         if (info->flags & RATE_INFO_FLAGS_MCS) {
4164                 if (nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs))
4165                         return false;
4166                 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
4167                     nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
4168                         return false;
4169         } else if (info->flags & RATE_INFO_FLAGS_VHT_MCS) {
4170                 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_MCS, info->mcs))
4171                         return false;
4172                 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_NSS, info->nss))
4173                         return false;
4174                 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
4175                     nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
4176                         return false;
4177         }
4178
4179         nla_nest_end(msg, rate);
4180         return true;
4181 }
4182
4183 static bool nl80211_put_signal(struct sk_buff *msg, u8 mask, s8 *signal,
4184                                int id)
4185 {
4186         void *attr;
4187         int i = 0;
4188
4189         if (!mask)
4190                 return true;
4191
4192         attr = nla_nest_start(msg, id);
4193         if (!attr)
4194                 return false;
4195
4196         for (i = 0; i < IEEE80211_MAX_CHAINS; i++) {
4197                 if (!(mask & BIT(i)))
4198                         continue;
4199
4200                 if (nla_put_u8(msg, i, signal[i]))
4201                         return false;
4202         }
4203
4204         nla_nest_end(msg, attr);
4205
4206         return true;
4207 }
4208
4209 static int nl80211_send_station(struct sk_buff *msg, u32 cmd, u32 portid,
4210                                 u32 seq, int flags,
4211                                 struct cfg80211_registered_device *rdev,
4212                                 struct net_device *dev,
4213                                 const u8 *mac_addr, struct station_info *sinfo)
4214 {
4215         void *hdr;
4216         struct nlattr *sinfoattr, *bss_param;
4217
4218         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
4219         if (!hdr)
4220                 return -1;
4221
4222         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
4223             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
4224             nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation))
4225                 goto nla_put_failure;
4226
4227         sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO);
4228         if (!sinfoattr)
4229                 goto nla_put_failure;
4230
4231 #define PUT_SINFO(attr, memb, type) do {                                \
4232         BUILD_BUG_ON(sizeof(type) == sizeof(u64));                      \
4233         if (sinfo->filled & (1ULL << NL80211_STA_INFO_ ## attr) &&      \
4234             nla_put_ ## type(msg, NL80211_STA_INFO_ ## attr,            \
4235                              sinfo->memb))                              \
4236                 goto nla_put_failure;                                   \
4237         } while (0)
4238 #define PUT_SINFO_U64(attr, memb) do {                                  \
4239         if (sinfo->filled & (1ULL << NL80211_STA_INFO_ ## attr) &&      \
4240             nla_put_u64_64bit(msg, NL80211_STA_INFO_ ## attr,           \
4241                               sinfo->memb, NL80211_STA_INFO_PAD))       \
4242                 goto nla_put_failure;                                   \
4243         } while (0)
4244
4245         PUT_SINFO(CONNECTED_TIME, connected_time, u32);
4246         PUT_SINFO(INACTIVE_TIME, inactive_time, u32);
4247
4248         if (sinfo->filled & (BIT(NL80211_STA_INFO_RX_BYTES) |
4249                              BIT(NL80211_STA_INFO_RX_BYTES64)) &&
4250             nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES,
4251                         (u32)sinfo->rx_bytes))
4252                 goto nla_put_failure;
4253
4254         if (sinfo->filled & (BIT(NL80211_STA_INFO_TX_BYTES) |
4255                              BIT(NL80211_STA_INFO_TX_BYTES64)) &&
4256             nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES,
4257                         (u32)sinfo->tx_bytes))
4258                 goto nla_put_failure;
4259
4260         PUT_SINFO_U64(RX_BYTES64, rx_bytes);
4261         PUT_SINFO_U64(TX_BYTES64, tx_bytes);
4262         PUT_SINFO(LLID, llid, u16);
4263         PUT_SINFO(PLID, plid, u16);
4264         PUT_SINFO(PLINK_STATE, plink_state, u8);
4265         PUT_SINFO_U64(RX_DURATION, rx_duration);
4266
4267         switch (rdev->wiphy.signal_type) {
4268         case CFG80211_SIGNAL_TYPE_MBM:
4269                 PUT_SINFO(SIGNAL, signal, u8);
4270                 PUT_SINFO(SIGNAL_AVG, signal_avg, u8);
4271                 break;
4272         default:
4273                 break;
4274         }
4275         if (sinfo->filled & BIT(NL80211_STA_INFO_CHAIN_SIGNAL)) {
4276                 if (!nl80211_put_signal(msg, sinfo->chains,
4277                                         sinfo->chain_signal,
4278                                         NL80211_STA_INFO_CHAIN_SIGNAL))
4279                         goto nla_put_failure;
4280         }
4281         if (sinfo->filled & BIT(NL80211_STA_INFO_CHAIN_SIGNAL_AVG)) {
4282                 if (!nl80211_put_signal(msg, sinfo->chains,
4283                                         sinfo->chain_signal_avg,
4284                                         NL80211_STA_INFO_CHAIN_SIGNAL_AVG))
4285                         goto nla_put_failure;
4286         }
4287         if (sinfo->filled & BIT(NL80211_STA_INFO_TX_BITRATE)) {
4288                 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
4289                                           NL80211_STA_INFO_TX_BITRATE))
4290                         goto nla_put_failure;
4291         }
4292         if (sinfo->filled & BIT(NL80211_STA_INFO_RX_BITRATE)) {
4293                 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
4294                                           NL80211_STA_INFO_RX_BITRATE))
4295                         goto nla_put_failure;
4296         }
4297
4298         PUT_SINFO(RX_PACKETS, rx_packets, u32);
4299         PUT_SINFO(TX_PACKETS, tx_packets, u32);
4300         PUT_SINFO(TX_RETRIES, tx_retries, u32);
4301         PUT_SINFO(TX_FAILED, tx_failed, u32);
4302         PUT_SINFO(EXPECTED_THROUGHPUT, expected_throughput, u32);
4303         PUT_SINFO(BEACON_LOSS, beacon_loss_count, u32);
4304         PUT_SINFO(LOCAL_PM, local_pm, u32);
4305         PUT_SINFO(PEER_PM, peer_pm, u32);
4306         PUT_SINFO(NONPEER_PM, nonpeer_pm, u32);
4307
4308         if (sinfo->filled & BIT(NL80211_STA_INFO_BSS_PARAM)) {
4309                 bss_param = nla_nest_start(msg, NL80211_STA_INFO_BSS_PARAM);
4310                 if (!bss_param)
4311                         goto nla_put_failure;
4312
4313                 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) &&
4314                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) ||
4315                     ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) &&
4316                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) ||
4317                     ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) &&
4318                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) ||
4319                     nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
4320                                sinfo->bss_param.dtim_period) ||
4321                     nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
4322                                 sinfo->bss_param.beacon_interval))
4323                         goto nla_put_failure;
4324
4325                 nla_nest_end(msg, bss_param);
4326         }
4327         if ((sinfo->filled & BIT(NL80211_STA_INFO_STA_FLAGS)) &&
4328             nla_put(msg, NL80211_STA_INFO_STA_FLAGS,
4329                     sizeof(struct nl80211_sta_flag_update),
4330                     &sinfo->sta_flags))
4331                 goto nla_put_failure;
4332
4333         PUT_SINFO_U64(T_OFFSET, t_offset);
4334         PUT_SINFO_U64(RX_DROP_MISC, rx_dropped_misc);
4335         PUT_SINFO_U64(BEACON_RX, rx_beacon);
4336         PUT_SINFO(BEACON_SIGNAL_AVG, rx_beacon_signal_avg, u8);
4337
4338 #undef PUT_SINFO
4339 #undef PUT_SINFO_U64
4340
4341         if (sinfo->filled & BIT(NL80211_STA_INFO_TID_STATS)) {
4342                 struct nlattr *tidsattr;
4343                 int tid;
4344
4345                 tidsattr = nla_nest_start(msg, NL80211_STA_INFO_TID_STATS);
4346                 if (!tidsattr)
4347                         goto nla_put_failure;
4348
4349                 for (tid = 0; tid < IEEE80211_NUM_TIDS + 1; tid++) {
4350                         struct cfg80211_tid_stats *tidstats;
4351                         struct nlattr *tidattr;
4352
4353                         tidstats = &sinfo->pertid[tid];
4354
4355                         if (!tidstats->filled)
4356                                 continue;
4357
4358                         tidattr = nla_nest_start(msg, tid + 1);
4359                         if (!tidattr)
4360                                 goto nla_put_failure;
4361
4362 #define PUT_TIDVAL_U64(attr, memb) do {                                 \
4363         if (tidstats->filled & BIT(NL80211_TID_STATS_ ## attr) &&       \
4364             nla_put_u64_64bit(msg, NL80211_TID_STATS_ ## attr,          \
4365                               tidstats->memb, NL80211_TID_STATS_PAD))   \
4366                 goto nla_put_failure;                                   \
4367         } while (0)
4368
4369                         PUT_TIDVAL_U64(RX_MSDU, rx_msdu);
4370                         PUT_TIDVAL_U64(TX_MSDU, tx_msdu);
4371                         PUT_TIDVAL_U64(TX_MSDU_RETRIES, tx_msdu_retries);
4372                         PUT_TIDVAL_U64(TX_MSDU_FAILED, tx_msdu_failed);
4373
4374 #undef PUT_TIDVAL_U64
4375                         nla_nest_end(msg, tidattr);
4376                 }
4377
4378                 nla_nest_end(msg, tidsattr);
4379         }
4380
4381         nla_nest_end(msg, sinfoattr);
4382
4383         if (sinfo->assoc_req_ies_len &&
4384             nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
4385                     sinfo->assoc_req_ies))
4386                 goto nla_put_failure;
4387
4388         genlmsg_end(msg, hdr);
4389         return 0;
4390
4391  nla_put_failure:
4392         genlmsg_cancel(msg, hdr);
4393         return -EMSGSIZE;
4394 }
4395
4396 static int nl80211_dump_station(struct sk_buff *skb,
4397                                 struct netlink_callback *cb)
4398 {
4399         struct station_info sinfo;
4400         struct cfg80211_registered_device *rdev;
4401         struct wireless_dev *wdev;
4402         u8 mac_addr[ETH_ALEN];
4403         int sta_idx = cb->args[2];
4404         int err;
4405
4406         err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
4407         if (err)
4408                 return err;
4409
4410         if (!wdev->netdev) {
4411                 err = -EINVAL;
4412                 goto out_err;
4413         }
4414
4415         if (!rdev->ops->dump_station) {
4416                 err = -EOPNOTSUPP;
4417                 goto out_err;
4418         }
4419
4420         while (1) {
4421                 memset(&sinfo, 0, sizeof(sinfo));
4422                 err = rdev_dump_station(rdev, wdev->netdev, sta_idx,
4423                                         mac_addr, &sinfo);
4424                 if (err == -ENOENT)
4425                         break;
4426                 if (err)
4427                         goto out_err;
4428
4429                 if (nl80211_send_station(skb, NL80211_CMD_NEW_STATION,
4430                                 NETLINK_CB(cb->skb).portid,
4431                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
4432                                 rdev, wdev->netdev, mac_addr,
4433                                 &sinfo) < 0)
4434                         goto out;
4435
4436                 sta_idx++;
4437         }
4438
4439  out:
4440         cb->args[2] = sta_idx;
4441         err = skb->len;
4442  out_err:
4443         nl80211_finish_wdev_dump(rdev);
4444
4445         return err;
4446 }
4447
4448 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
4449 {
4450         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4451         struct net_device *dev = info->user_ptr[1];
4452         struct station_info sinfo;
4453         struct sk_buff *msg;
4454         u8 *mac_addr = NULL;
4455         int err;
4456
4457         memset(&sinfo, 0, sizeof(sinfo));
4458
4459         if (!info->attrs[NL80211_ATTR_MAC])
4460                 return -EINVAL;
4461
4462         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4463
4464         if (!rdev->ops->get_station)
4465                 return -EOPNOTSUPP;
4466
4467         err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
4468         if (err)
4469                 return err;
4470
4471         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4472         if (!msg)
4473                 return -ENOMEM;
4474
4475         if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION,
4476                                  info->snd_portid, info->snd_seq, 0,
4477                                  rdev, dev, mac_addr, &sinfo) < 0) {
4478                 nlmsg_free(msg);
4479                 return -ENOBUFS;
4480         }
4481
4482         return genlmsg_reply(msg, info);
4483 }
4484
4485 int cfg80211_check_station_change(struct wiphy *wiphy,
4486                                   struct station_parameters *params,
4487                                   enum cfg80211_station_type statype)
4488 {
4489         if (params->listen_interval != -1 &&
4490             statype != CFG80211_STA_AP_CLIENT_UNASSOC)
4491                 return -EINVAL;
4492
4493         if (params->support_p2p_ps != -1 &&
4494             statype != CFG80211_STA_AP_CLIENT_UNASSOC)
4495                 return -EINVAL;
4496
4497         if (params->aid &&
4498             !(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) &&
4499             statype != CFG80211_STA_AP_CLIENT_UNASSOC)
4500                 return -EINVAL;
4501
4502         /* When you run into this, adjust the code below for the new flag */
4503         BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
4504
4505         switch (statype) {
4506         case CFG80211_STA_MESH_PEER_KERNEL:
4507         case CFG80211_STA_MESH_PEER_USER:
4508                 /*
4509                  * No ignoring the TDLS flag here -- the userspace mesh
4510                  * code doesn't have the bug of including TDLS in the
4511                  * mask everywhere.
4512                  */
4513                 if (params->sta_flags_mask &
4514                                 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4515                                   BIT(NL80211_STA_FLAG_MFP) |
4516                                   BIT(NL80211_STA_FLAG_AUTHORIZED)))
4517                         return -EINVAL;
4518                 break;
4519         case CFG80211_STA_TDLS_PEER_SETUP:
4520         case CFG80211_STA_TDLS_PEER_ACTIVE:
4521                 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
4522                         return -EINVAL;
4523                 /* ignore since it can't change */
4524                 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
4525                 break;
4526         default:
4527                 /* disallow mesh-specific things */
4528                 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
4529                         return -EINVAL;
4530                 if (params->local_pm)
4531                         return -EINVAL;
4532                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
4533                         return -EINVAL;
4534         }
4535
4536         if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
4537             statype != CFG80211_STA_TDLS_PEER_ACTIVE) {
4538                 /* TDLS can't be set, ... */
4539                 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
4540                         return -EINVAL;
4541                 /*
4542                  * ... but don't bother the driver with it. This works around
4543                  * a hostapd/wpa_supplicant issue -- it always includes the
4544                  * TLDS_PEER flag in the mask even for AP mode.
4545                  */
4546                 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
4547         }
4548
4549         if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
4550             statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
4551                 /* reject other things that can't change */
4552                 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD)
4553                         return -EINVAL;
4554                 if (params->sta_modify_mask & STATION_PARAM_APPLY_CAPABILITY)
4555                         return -EINVAL;
4556                 if (params->supported_rates)
4557                         return -EINVAL;
4558                 if (params->ext_capab || params->ht_capa || params->vht_capa)
4559                         return -EINVAL;
4560         }
4561
4562         if (statype != CFG80211_STA_AP_CLIENT &&
4563             statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
4564                 if (params->vlan)
4565                         return -EINVAL;
4566         }
4567
4568         switch (statype) {
4569         case CFG80211_STA_AP_MLME_CLIENT:
4570                 /* Use this only for authorizing/unauthorizing a station */
4571                 if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)))
4572                         return -EOPNOTSUPP;
4573                 break;
4574         case CFG80211_STA_AP_CLIENT:
4575         case CFG80211_STA_AP_CLIENT_UNASSOC:
4576                 /* accept only the listed bits */
4577                 if (params->sta_flags_mask &
4578                                 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
4579                                   BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4580                                   BIT(NL80211_STA_FLAG_ASSOCIATED) |
4581                                   BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
4582                                   BIT(NL80211_STA_FLAG_WME) |
4583                                   BIT(NL80211_STA_FLAG_MFP)))
4584                         return -EINVAL;
4585
4586                 /* but authenticated/associated only if driver handles it */
4587                 if (!(wiphy->features & NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
4588                     params->sta_flags_mask &
4589                                 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4590                                  BIT(NL80211_STA_FLAG_ASSOCIATED)))
4591                         return -EINVAL;
4592                 break;
4593         case CFG80211_STA_IBSS:
4594         case CFG80211_STA_AP_STA:
4595                 /* reject any changes other than AUTHORIZED */
4596                 if (params->sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
4597                         return -EINVAL;
4598                 break;
4599         case CFG80211_STA_TDLS_PEER_SETUP:
4600                 /* reject any changes other than AUTHORIZED or WME */
4601                 if (params->sta_flags_mask & ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
4602                                                BIT(NL80211_STA_FLAG_WME)))
4603                         return -EINVAL;
4604                 /* force (at least) rates when authorizing */
4605                 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED) &&
4606                     !params->supported_rates)
4607                         return -EINVAL;
4608                 break;
4609         case CFG80211_STA_TDLS_PEER_ACTIVE:
4610                 /* reject any changes */
4611                 return -EINVAL;
4612         case CFG80211_STA_MESH_PEER_KERNEL:
4613                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
4614                         return -EINVAL;
4615                 break;
4616         case CFG80211_STA_MESH_PEER_USER:
4617                 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION &&
4618                     params->plink_action != NL80211_PLINK_ACTION_BLOCK)
4619                         return -EINVAL;
4620                 break;
4621         }
4622
4623         /*
4624          * Older kernel versions ignored this attribute entirely, so don't
4625          * reject attempts to update it but mark it as unused instead so the
4626          * driver won't look at the data.
4627          */
4628         if (statype != CFG80211_STA_AP_CLIENT_UNASSOC &&
4629             statype != CFG80211_STA_TDLS_PEER_SETUP)
4630                 params->opmode_notif_used = false;
4631
4632         return 0;
4633 }
4634 EXPORT_SYMBOL(cfg80211_check_station_change);
4635
4636 /*
4637  * Get vlan interface making sure it is running and on the right wiphy.
4638  */
4639 static struct net_device *get_vlan(struct genl_info *info,
4640                                    struct cfg80211_registered_device *rdev)
4641 {
4642         struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
4643         struct net_device *v;
4644         int ret;
4645
4646         if (!vlanattr)
4647                 return NULL;
4648
4649         v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr));
4650         if (!v)
4651                 return ERR_PTR(-ENODEV);
4652
4653         if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) {
4654                 ret = -EINVAL;
4655                 goto error;
4656         }
4657
4658         if (v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
4659             v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4660             v->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
4661                 ret = -EINVAL;
4662                 goto error;
4663         }
4664
4665         if (!netif_running(v)) {
4666                 ret = -ENETDOWN;
4667                 goto error;
4668         }
4669
4670         return v;
4671  error:
4672         dev_put(v);
4673         return ERR_PTR(ret);
4674 }
4675
4676 static const struct nla_policy
4677 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] = {
4678         [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
4679         [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
4680 };
4681
4682 static int nl80211_parse_sta_wme(struct genl_info *info,
4683                                  struct station_parameters *params)
4684 {
4685         struct nlattr *tb[NL80211_STA_WME_MAX + 1];
4686         struct nlattr *nla;
4687         int err;
4688
4689         /* parse WME attributes if present */
4690         if (!info->attrs[NL80211_ATTR_STA_WME])
4691                 return 0;
4692
4693         nla = info->attrs[NL80211_ATTR_STA_WME];
4694         err = nla_parse_nested(tb, NL80211_STA_WME_MAX, nla,
4695                                nl80211_sta_wme_policy);
4696         if (err)
4697                 return err;
4698
4699         if (tb[NL80211_STA_WME_UAPSD_QUEUES])
4700                 params->uapsd_queues = nla_get_u8(
4701                         tb[NL80211_STA_WME_UAPSD_QUEUES]);
4702         if (params->uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
4703                 return -EINVAL;
4704
4705         if (tb[NL80211_STA_WME_MAX_SP])
4706                 params->max_sp = nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
4707
4708         if (params->max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
4709                 return -EINVAL;
4710
4711         params->sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
4712
4713         return 0;
4714 }
4715
4716 static int nl80211_parse_sta_channel_info(struct genl_info *info,
4717                                       struct station_parameters *params)
4718 {
4719         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]) {
4720                 params->supported_channels =
4721                      nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
4722                 params->supported_channels_len =
4723                      nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
4724                 /*
4725                  * Need to include at least one (first channel, number of
4726                  * channels) tuple for each subband, and must have proper
4727                  * tuples for the rest of the data as well.
4728                  */
4729                 if (params->supported_channels_len < 2)
4730                         return -EINVAL;
4731                 if (params->supported_channels_len % 2)
4732                         return -EINVAL;
4733         }
4734
4735         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]) {
4736                 params->supported_oper_classes =
4737                  nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
4738                 params->supported_oper_classes_len =
4739                   nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
4740                 /*
4741                  * The value of the Length field of the Supported Operating
4742                  * Classes element is between 2 and 253.
4743                  */
4744                 if (params->supported_oper_classes_len < 2 ||
4745                     params->supported_oper_classes_len > 253)
4746                         return -EINVAL;
4747         }
4748         return 0;
4749 }
4750
4751 static int nl80211_set_station_tdls(struct genl_info *info,
4752                                     struct station_parameters *params)
4753 {
4754         int err;
4755         /* Dummy STA entry gets updated once the peer capabilities are known */
4756         if (info->attrs[NL80211_ATTR_PEER_AID])
4757                 params->aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
4758         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
4759                 params->ht_capa =
4760                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
4761         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
4762                 params->vht_capa =
4763                         nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
4764
4765         err = nl80211_parse_sta_channel_info(info, params);
4766         if (err)
4767                 return err;
4768
4769         return nl80211_parse_sta_wme(info, params);
4770 }
4771
4772 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
4773 {
4774         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4775         struct net_device *dev = info->user_ptr[1];
4776         struct station_parameters params;
4777         u8 *mac_addr;
4778         int err;
4779
4780         memset(&params, 0, sizeof(params));
4781
4782         if (!rdev->ops->change_station)
4783                 return -EOPNOTSUPP;
4784
4785         /*
4786          * AID and listen_interval properties can be set only for unassociated
4787          * station. Include these parameters here and will check them in
4788          * cfg80211_check_station_change().
4789          */
4790         if (info->attrs[NL80211_ATTR_STA_AID])
4791                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
4792
4793         if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
4794                 params.listen_interval =
4795                      nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
4796         else
4797                 params.listen_interval = -1;
4798
4799         if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]) {
4800                 u8 tmp;
4801
4802                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
4803                 if (tmp >= NUM_NL80211_P2P_PS_STATUS)
4804                         return -EINVAL;
4805
4806                 params.support_p2p_ps = tmp;
4807         } else {
4808                 params.support_p2p_ps = -1;
4809         }
4810
4811         if (!info->attrs[NL80211_ATTR_MAC])
4812                 return -EINVAL;
4813
4814         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4815
4816         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
4817                 params.supported_rates =
4818                         nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4819                 params.supported_rates_len =
4820                         nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4821         }
4822
4823         if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
4824                 params.capability =
4825                         nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
4826                 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
4827         }
4828
4829         if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
4830                 params.ext_capab =
4831                         nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4832                 params.ext_capab_len =
4833                         nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4834         }
4835
4836         if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
4837                 return -EINVAL;
4838
4839         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
4840                 params.plink_action =
4841                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
4842                 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
4843                         return -EINVAL;
4844         }
4845
4846         if (info->attrs[NL80211_ATTR_STA_PLINK_STATE]) {
4847                 params.plink_state =
4848                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
4849                 if (params.plink_state >= NUM_NL80211_PLINK_STATES)
4850                         return -EINVAL;
4851                 if (info->attrs[NL80211_ATTR_MESH_PEER_AID]) {
4852                         params.peer_aid = nla_get_u16(
4853                                 info->attrs[NL80211_ATTR_MESH_PEER_AID]);
4854                         if (params.peer_aid > IEEE80211_MAX_AID)
4855                                 return -EINVAL;
4856                 }
4857                 params.sta_modify_mask |= STATION_PARAM_APPLY_PLINK_STATE;
4858         }
4859
4860         if (info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]) {
4861                 enum nl80211_mesh_power_mode pm = nla_get_u32(
4862                         info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]);
4863
4864                 if (pm <= NL80211_MESH_POWER_UNKNOWN ||
4865                     pm > NL80211_MESH_POWER_MAX)
4866                         return -EINVAL;
4867
4868                 params.local_pm = pm;
4869         }
4870
4871         if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
4872                 params.opmode_notif_used = true;
4873                 params.opmode_notif =
4874                         nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
4875         }
4876
4877         /* Include parameters for TDLS peer (will check later) */
4878         err = nl80211_set_station_tdls(info, &params);
4879         if (err)
4880                 return err;
4881
4882         params.vlan = get_vlan(info, rdev);
4883         if (IS_ERR(params.vlan))
4884                 return PTR_ERR(params.vlan);
4885
4886         switch (dev->ieee80211_ptr->iftype) {
4887         case NL80211_IFTYPE_AP:
4888         case NL80211_IFTYPE_AP_VLAN:
4889         case NL80211_IFTYPE_P2P_GO:
4890         case NL80211_IFTYPE_P2P_CLIENT:
4891         case NL80211_IFTYPE_STATION:
4892         case NL80211_IFTYPE_ADHOC:
4893         case NL80211_IFTYPE_MESH_POINT:
4894                 break;
4895         default:
4896                 err = -EOPNOTSUPP;
4897                 goto out_put_vlan;
4898         }
4899
4900         /* driver will call cfg80211_check_station_change() */
4901         err = rdev_change_station(rdev, dev, mac_addr, &params);
4902
4903  out_put_vlan:
4904         if (params.vlan)
4905                 dev_put(params.vlan);
4906
4907         return err;
4908 }
4909
4910 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
4911 {
4912         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4913         int err;
4914         struct net_device *dev = info->user_ptr[1];
4915         struct station_parameters params;
4916         u8 *mac_addr = NULL;
4917         u32 auth_assoc = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4918                          BIT(NL80211_STA_FLAG_ASSOCIATED);
4919
4920         memset(&params, 0, sizeof(params));
4921
4922         if (!rdev->ops->add_station)
4923                 return -EOPNOTSUPP;
4924
4925         if (!info->attrs[NL80211_ATTR_MAC])
4926                 return -EINVAL;
4927
4928         if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
4929                 return -EINVAL;
4930
4931         if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
4932                 return -EINVAL;
4933
4934         if (!info->attrs[NL80211_ATTR_STA_AID] &&
4935             !info->attrs[NL80211_ATTR_PEER_AID])
4936                 return -EINVAL;
4937
4938         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4939         params.supported_rates =
4940                 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4941         params.supported_rates_len =
4942                 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4943         params.listen_interval =
4944                 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
4945
4946         if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]) {
4947                 u8 tmp;
4948
4949                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
4950                 if (tmp >= NUM_NL80211_P2P_PS_STATUS)
4951                         return -EINVAL;
4952
4953                 params.support_p2p_ps = tmp;
4954         } else {
4955                 /*
4956                  * if not specified, assume it's supported for P2P GO interface,
4957                  * and is NOT supported for AP interface
4958                  */
4959                 params.support_p2p_ps =
4960                         dev->ieee80211_ptr->iftype == NL80211_IFTYPE_P2P_GO;
4961         }
4962
4963         if (info->attrs[NL80211_ATTR_PEER_AID])
4964                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
4965         else
4966                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
4967         if (!params.aid || params.aid > IEEE80211_MAX_AID)
4968                 return -EINVAL;
4969
4970         if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
4971                 params.capability =
4972                         nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
4973                 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
4974         }
4975
4976         if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
4977                 params.ext_capab =
4978                         nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4979                 params.ext_capab_len =
4980                         nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4981         }
4982
4983         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
4984                 params.ht_capa =
4985                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
4986
4987         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
4988                 params.vht_capa =
4989                         nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
4990
4991         if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
4992                 params.opmode_notif_used = true;
4993                 params.opmode_notif =
4994                         nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
4995         }
4996
4997         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
4998                 params.plink_action =
4999                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
5000                 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
5001                         return -EINVAL;
5002         }
5003
5004         err = nl80211_parse_sta_channel_info(info, &params);
5005         if (err)
5006                 return err;
5007
5008         err = nl80211_parse_sta_wme(info, &params);
5009         if (err)
5010                 return err;
5011
5012         if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
5013                 return -EINVAL;
5014
5015         /* HT/VHT requires QoS, but if we don't have that just ignore HT/VHT
5016          * as userspace might just pass through the capabilities from the IEs
5017          * directly, rather than enforcing this restriction and returning an
5018          * error in this case.
5019          */
5020         if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME))) {
5021                 params.ht_capa = NULL;
5022                 params.vht_capa = NULL;
5023         }
5024
5025         /* When you run into this, adjust the code below for the new flag */
5026         BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
5027
5028         switch (dev->ieee80211_ptr->iftype) {
5029         case NL80211_IFTYPE_AP:
5030         case NL80211_IFTYPE_AP_VLAN:
5031         case NL80211_IFTYPE_P2P_GO:
5032                 /* ignore WME attributes if iface/sta is not capable */
5033                 if (!(rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) ||
5034                     !(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)))
5035                         params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
5036
5037                 /* TDLS peers cannot be added */
5038                 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
5039                     info->attrs[NL80211_ATTR_PEER_AID])
5040                         return -EINVAL;
5041                 /* but don't bother the driver with it */
5042                 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
5043
5044                 /* allow authenticated/associated only if driver handles it */
5045                 if (!(rdev->wiphy.features &
5046                                 NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
5047                     params.sta_flags_mask & auth_assoc)
5048                         return -EINVAL;
5049
5050                 /* Older userspace, or userspace wanting to be compatible with
5051                  * !NL80211_FEATURE_FULL_AP_CLIENT_STATE, will not set the auth
5052                  * and assoc flags in the mask, but assumes the station will be
5053                  * added as associated anyway since this was the required driver
5054                  * behaviour before NL80211_FEATURE_FULL_AP_CLIENT_STATE was
5055                  * introduced.
5056                  * In order to not bother drivers with this quirk in the API
5057                  * set the flags in both the mask and set for new stations in
5058                  * this case.
5059                  */
5060                 if (!(params.sta_flags_mask & auth_assoc)) {
5061                         params.sta_flags_mask |= auth_assoc;
5062                         params.sta_flags_set |= auth_assoc;
5063                 }
5064
5065                 /* must be last in here for error handling */
5066                 params.vlan = get_vlan(info, rdev);
5067                 if (IS_ERR(params.vlan))
5068                         return PTR_ERR(params.vlan);
5069                 break;
5070         case NL80211_IFTYPE_MESH_POINT:
5071                 /* ignore uAPSD data */
5072                 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
5073
5074                 /* associated is disallowed */
5075                 if (params.sta_flags_mask & BIT(NL80211_STA_FLAG_ASSOCIATED))
5076                         return -EINVAL;
5077                 /* TDLS peers cannot be added */
5078                 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
5079                     info->attrs[NL80211_ATTR_PEER_AID])
5080                         return -EINVAL;
5081                 break;
5082         case NL80211_IFTYPE_STATION:
5083         case NL80211_IFTYPE_P2P_CLIENT:
5084                 /* ignore uAPSD data */
5085                 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
5086
5087                 /* these are disallowed */
5088                 if (params.sta_flags_mask &
5089                                 (BIT(NL80211_STA_FLAG_ASSOCIATED) |
5090                                  BIT(NL80211_STA_FLAG_AUTHENTICATED)))
5091                         return -EINVAL;
5092                 /* Only TDLS peers can be added */
5093                 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
5094                         return -EINVAL;
5095                 /* Can only add if TDLS ... */
5096                 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS))
5097                         return -EOPNOTSUPP;
5098                 /* ... with external setup is supported */
5099                 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP))
5100                         return -EOPNOTSUPP;
5101                 /*
5102                  * Older wpa_supplicant versions always mark the TDLS peer
5103                  * as authorized, but it shouldn't yet be.
5104                  */
5105                 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_AUTHORIZED);
5106                 break;
5107         default:
5108                 return -EOPNOTSUPP;
5109         }
5110
5111         /* be aware of params.vlan when changing code here */
5112
5113         err = rdev_add_station(rdev, dev, mac_addr, &params);
5114
5115         if (params.vlan)
5116                 dev_put(params.vlan);
5117         return err;
5118 }
5119
5120 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
5121 {
5122         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5123         struct net_device *dev = info->user_ptr[1];
5124         struct station_del_parameters params;
5125
5126         memset(&params, 0, sizeof(params));
5127
5128         if (info->attrs[NL80211_ATTR_MAC])
5129                 params.mac = nla_data(info->attrs[NL80211_ATTR_MAC]);
5130
5131         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5132             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
5133             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
5134             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5135                 return -EINVAL;
5136
5137         if (!rdev->ops->del_station)
5138                 return -EOPNOTSUPP;
5139
5140         if (info->attrs[NL80211_ATTR_MGMT_SUBTYPE]) {
5141                 params.subtype =
5142                         nla_get_u8(info->attrs[NL80211_ATTR_MGMT_SUBTYPE]);
5143                 if (params.subtype != IEEE80211_STYPE_DISASSOC >> 4 &&
5144                     params.subtype != IEEE80211_STYPE_DEAUTH >> 4)
5145                         return -EINVAL;
5146         } else {
5147                 /* Default to Deauthentication frame */
5148                 params.subtype = IEEE80211_STYPE_DEAUTH >> 4;
5149         }
5150
5151         if (info->attrs[NL80211_ATTR_REASON_CODE]) {
5152                 params.reason_code =
5153                         nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
5154                 if (params.reason_code == 0)
5155                         return -EINVAL; /* 0 is reserved */
5156         } else {
5157                 /* Default to reason code 2 */
5158                 params.reason_code = WLAN_REASON_PREV_AUTH_NOT_VALID;
5159         }
5160
5161         return rdev_del_station(rdev, dev, &params);
5162 }
5163
5164 static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq,
5165                                 int flags, struct net_device *dev,
5166                                 u8 *dst, u8 *next_hop,
5167                                 struct mpath_info *pinfo)
5168 {
5169         void *hdr;
5170         struct nlattr *pinfoattr;
5171
5172         hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_MPATH);
5173         if (!hdr)
5174                 return -1;
5175
5176         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
5177             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
5178             nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) ||
5179             nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation))
5180                 goto nla_put_failure;
5181
5182         pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO);
5183         if (!pinfoattr)
5184                 goto nla_put_failure;
5185         if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) &&
5186             nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
5187                         pinfo->frame_qlen))
5188                 goto nla_put_failure;
5189         if (((pinfo->filled & MPATH_INFO_SN) &&
5190              nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) ||
5191             ((pinfo->filled & MPATH_INFO_METRIC) &&
5192              nla_put_u32(msg, NL80211_MPATH_INFO_METRIC,
5193                          pinfo->metric)) ||
5194             ((pinfo->filled & MPATH_INFO_EXPTIME) &&
5195              nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME,
5196                          pinfo->exptime)) ||
5197             ((pinfo->filled & MPATH_INFO_FLAGS) &&
5198              nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS,
5199                         pinfo->flags)) ||
5200             ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) &&
5201              nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
5202                          pinfo->discovery_timeout)) ||
5203             ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) &&
5204              nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
5205                         pinfo->discovery_retries)))
5206                 goto nla_put_failure;
5207
5208         nla_nest_end(msg, pinfoattr);
5209
5210         genlmsg_end(msg, hdr);
5211         return 0;
5212
5213  nla_put_failure:
5214         genlmsg_cancel(msg, hdr);
5215         return -EMSGSIZE;
5216 }
5217
5218 static int nl80211_dump_mpath(struct sk_buff *skb,
5219                               struct netlink_callback *cb)
5220 {
5221         struct mpath_info pinfo;
5222         struct cfg80211_registered_device *rdev;
5223         struct wireless_dev *wdev;
5224         u8 dst[ETH_ALEN];
5225         u8 next_hop[ETH_ALEN];
5226         int path_idx = cb->args[2];
5227         int err;
5228
5229         err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
5230         if (err)
5231                 return err;
5232
5233         if (!rdev->ops->dump_mpath) {
5234                 err = -EOPNOTSUPP;
5235                 goto out_err;
5236         }
5237
5238         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
5239                 err = -EOPNOTSUPP;
5240                 goto out_err;
5241         }
5242
5243         while (1) {
5244                 err = rdev_dump_mpath(rdev, wdev->netdev, path_idx, dst,
5245                                       next_hop, &pinfo);
5246                 if (err == -ENOENT)
5247                         break;
5248                 if (err)
5249                         goto out_err;
5250
5251                 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
5252                                        cb->nlh->nlmsg_seq, NLM_F_MULTI,
5253                                        wdev->netdev, dst, next_hop,
5254                                        &pinfo) < 0)
5255                         goto out;
5256
5257                 path_idx++;
5258         }
5259
5260  out:
5261         cb->args[2] = path_idx;
5262         err = skb->len;
5263  out_err:
5264         nl80211_finish_wdev_dump(rdev);
5265         return err;
5266 }
5267
5268 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
5269 {
5270         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5271         int err;
5272         struct net_device *dev = info->user_ptr[1];
5273         struct mpath_info pinfo;
5274         struct sk_buff *msg;
5275         u8 *dst = NULL;
5276         u8 next_hop[ETH_ALEN];
5277
5278         memset(&pinfo, 0, sizeof(pinfo));
5279
5280         if (!info->attrs[NL80211_ATTR_MAC])
5281                 return -EINVAL;
5282
5283         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
5284
5285         if (!rdev->ops->get_mpath)
5286                 return -EOPNOTSUPP;
5287
5288         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
5289                 return -EOPNOTSUPP;
5290
5291         err = rdev_get_mpath(rdev, dev, dst, next_hop, &pinfo);
5292         if (err)
5293                 return err;
5294
5295         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5296         if (!msg)
5297                 return -ENOMEM;
5298
5299         if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
5300                                  dev, dst, next_hop, &pinfo) < 0) {
5301                 nlmsg_free(msg);
5302                 return -ENOBUFS;
5303         }
5304
5305         return genlmsg_reply(msg, info);
5306 }
5307
5308 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
5309 {
5310         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5311         struct net_device *dev = info->user_ptr[1];
5312         u8 *dst = NULL;
5313         u8 *next_hop = NULL;
5314
5315         if (!info->attrs[NL80211_ATTR_MAC])
5316                 return -EINVAL;
5317
5318         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
5319                 return -EINVAL;
5320
5321         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
5322         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
5323
5324         if (!rdev->ops->change_mpath)
5325                 return -EOPNOTSUPP;
5326
5327         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
5328                 return -EOPNOTSUPP;
5329
5330         return rdev_change_mpath(rdev, dev, dst, next_hop);
5331 }
5332
5333 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
5334 {
5335         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5336         struct net_device *dev = info->user_ptr[1];
5337         u8 *dst = NULL;
5338         u8 *next_hop = NULL;
5339
5340         if (!info->attrs[NL80211_ATTR_MAC])
5341                 return -EINVAL;
5342
5343         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
5344                 return -EINVAL;
5345
5346         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
5347         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
5348
5349         if (!rdev->ops->add_mpath)
5350                 return -EOPNOTSUPP;
5351
5352         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
5353                 return -EOPNOTSUPP;
5354
5355         return rdev_add_mpath(rdev, dev, dst, next_hop);
5356 }
5357
5358 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
5359 {
5360         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5361         struct net_device *dev = info->user_ptr[1];
5362         u8 *dst = NULL;
5363
5364         if (info->attrs[NL80211_ATTR_MAC])
5365                 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
5366
5367         if (!rdev->ops->del_mpath)
5368                 return -EOPNOTSUPP;
5369
5370         return rdev_del_mpath(rdev, dev, dst);
5371 }
5372
5373 static int nl80211_get_mpp(struct sk_buff *skb, struct genl_info *info)
5374 {
5375         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5376         int err;
5377         struct net_device *dev = info->user_ptr[1];
5378         struct mpath_info pinfo;
5379         struct sk_buff *msg;
5380         u8 *dst = NULL;
5381         u8 mpp[ETH_ALEN];
5382
5383         memset(&pinfo, 0, sizeof(pinfo));
5384
5385         if (!info->attrs[NL80211_ATTR_MAC])
5386                 return -EINVAL;
5387
5388         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
5389
5390         if (!rdev->ops->get_mpp)
5391                 return -EOPNOTSUPP;
5392
5393         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
5394                 return -EOPNOTSUPP;
5395
5396         err = rdev_get_mpp(rdev, dev, dst, mpp, &pinfo);
5397         if (err)
5398                 return err;
5399
5400         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5401         if (!msg)
5402                 return -ENOMEM;
5403
5404         if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
5405                                dev, dst, mpp, &pinfo) < 0) {
5406                 nlmsg_free(msg);
5407                 return -ENOBUFS;
5408         }
5409
5410         return genlmsg_reply(msg, info);
5411 }
5412
5413 static int nl80211_dump_mpp(struct sk_buff *skb,
5414                             struct netlink_callback *cb)
5415 {
5416         struct mpath_info pinfo;
5417         struct cfg80211_registered_device *rdev;
5418         struct wireless_dev *wdev;
5419         u8 dst[ETH_ALEN];
5420         u8 mpp[ETH_ALEN];
5421         int path_idx = cb->args[2];
5422         int err;
5423
5424         err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
5425         if (err)
5426                 return err;
5427
5428         if (!rdev->ops->dump_mpp) {
5429                 err = -EOPNOTSUPP;
5430                 goto out_err;
5431         }
5432
5433         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
5434                 err = -EOPNOTSUPP;
5435                 goto out_err;
5436         }
5437
5438         while (1) {
5439                 err = rdev_dump_mpp(rdev, wdev->netdev, path_idx, dst,
5440                                     mpp, &pinfo);
5441                 if (err == -ENOENT)
5442                         break;
5443                 if (err)
5444                         goto out_err;
5445
5446                 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
5447                                        cb->nlh->nlmsg_seq, NLM_F_MULTI,
5448                                        wdev->netdev, dst, mpp,
5449                                        &pinfo) < 0)
5450                         goto out;
5451
5452                 path_idx++;
5453         }
5454
5455  out:
5456         cb->args[2] = path_idx;
5457         err = skb->len;
5458  out_err:
5459         nl80211_finish_wdev_dump(rdev);
5460         return err;
5461 }
5462
5463 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
5464 {
5465         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5466         struct net_device *dev = info->user_ptr[1];
5467         struct wireless_dev *wdev = dev->ieee80211_ptr;
5468         struct bss_parameters params;
5469         int err;
5470
5471         memset(&params, 0, sizeof(params));
5472         /* default to not changing parameters */
5473         params.use_cts_prot = -1;
5474         params.use_short_preamble = -1;
5475         params.use_short_slot_time = -1;
5476         params.ap_isolate = -1;
5477         params.ht_opmode = -1;
5478         params.p2p_ctwindow = -1;
5479         params.p2p_opp_ps = -1;
5480
5481         if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
5482                 params.use_cts_prot =
5483                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
5484         if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
5485                 params.use_short_preamble =
5486                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
5487         if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
5488                 params.use_short_slot_time =
5489                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
5490         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
5491                 params.basic_rates =
5492                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
5493                 params.basic_rates_len =
5494                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
5495         }
5496         if (info->attrs[NL80211_ATTR_AP_ISOLATE])
5497                 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
5498         if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
5499                 params.ht_opmode =
5500                         nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
5501
5502         if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
5503                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5504                         return -EINVAL;
5505                 params.p2p_ctwindow =
5506                         nla_get_s8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
5507                 if (params.p2p_ctwindow < 0)
5508                         return -EINVAL;
5509                 if (params.p2p_ctwindow != 0 &&
5510                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
5511                         return -EINVAL;
5512         }
5513
5514         if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
5515                 u8 tmp;
5516
5517                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5518                         return -EINVAL;
5519                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
5520                 if (tmp > 1)
5521                         return -EINVAL;
5522                 params.p2p_opp_ps = tmp;
5523                 if (params.p2p_opp_ps &&
5524                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
5525                         return -EINVAL;
5526         }
5527
5528         if (!rdev->ops->change_bss)
5529                 return -EOPNOTSUPP;
5530
5531         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5532             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5533                 return -EOPNOTSUPP;
5534
5535         wdev_lock(wdev);
5536         err = rdev_change_bss(rdev, dev, &params);
5537         wdev_unlock(wdev);
5538
5539         return err;
5540 }
5541
5542 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
5543 {
5544         char *data = NULL;
5545         bool is_indoor;
5546         enum nl80211_user_reg_hint_type user_reg_hint_type;
5547         u32 owner_nlportid;
5548
5549         /*
5550          * You should only get this when cfg80211 hasn't yet initialized
5551          * completely when built-in to the kernel right between the time
5552          * window between nl80211_init() and regulatory_init(), if that is
5553          * even possible.
5554          */
5555         if (unlikely(!rcu_access_pointer(cfg80211_regdomain)))
5556                 return -EINPROGRESS;
5557
5558         if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE])
5559                 user_reg_hint_type =
5560                   nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]);
5561         else
5562                 user_reg_hint_type = NL80211_USER_REG_HINT_USER;
5563
5564         switch (user_reg_hint_type) {
5565         case NL80211_USER_REG_HINT_USER:
5566         case NL80211_USER_REG_HINT_CELL_BASE:
5567                 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
5568                         return -EINVAL;
5569
5570                 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
5571                 return regulatory_hint_user(data, user_reg_hint_type);
5572         case NL80211_USER_REG_HINT_INDOOR:
5573                 if (info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
5574                         owner_nlportid = info->snd_portid;
5575                         is_indoor = !!info->attrs[NL80211_ATTR_REG_INDOOR];
5576                 } else {
5577                         owner_nlportid = 0;
5578                         is_indoor = true;
5579                 }
5580
5581                 return regulatory_hint_indoor(is_indoor, owner_nlportid);
5582         default:
5583                 return -EINVAL;
5584         }
5585 }
5586
5587 static int nl80211_get_mesh_config(struct sk_buff *skb,
5588                                    struct genl_info *info)
5589 {
5590         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5591         struct net_device *dev = info->user_ptr[1];
5592         struct wireless_dev *wdev = dev->ieee80211_ptr;
5593         struct mesh_config cur_params;
5594         int err = 0;
5595         void *hdr;
5596         struct nlattr *pinfoattr;
5597         struct sk_buff *msg;
5598
5599         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
5600                 return -EOPNOTSUPP;
5601
5602         if (!rdev->ops->get_mesh_config)
5603                 return -EOPNOTSUPP;
5604
5605         wdev_lock(wdev);
5606         /* If not connected, get default parameters */
5607         if (!wdev->mesh_id_len)
5608                 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
5609         else
5610                 err = rdev_get_mesh_config(rdev, dev, &cur_params);
5611         wdev_unlock(wdev);
5612
5613         if (err)
5614                 return err;
5615
5616         /* Draw up a netlink message to send back */
5617         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5618         if (!msg)
5619                 return -ENOMEM;
5620         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
5621                              NL80211_CMD_GET_MESH_CONFIG);
5622         if (!hdr)
5623                 goto out;
5624         pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG);
5625         if (!pinfoattr)
5626                 goto nla_put_failure;
5627         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
5628             nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
5629                         cur_params.dot11MeshRetryTimeout) ||
5630             nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
5631                         cur_params.dot11MeshConfirmTimeout) ||
5632             nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
5633                         cur_params.dot11MeshHoldingTimeout) ||
5634             nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
5635                         cur_params.dot11MeshMaxPeerLinks) ||
5636             nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES,
5637                        cur_params.dot11MeshMaxRetries) ||
5638             nla_put_u8(msg, NL80211_MESHCONF_TTL,
5639                        cur_params.dot11MeshTTL) ||
5640             nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL,
5641                        cur_params.element_ttl) ||
5642             nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
5643                        cur_params.auto_open_plinks) ||
5644             nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
5645                         cur_params.dot11MeshNbrOffsetMaxNeighbor) ||
5646             nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
5647                        cur_params.dot11MeshHWMPmaxPREQretries) ||
5648             nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
5649                         cur_params.path_refresh_time) ||
5650             nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
5651                         cur_params.min_discovery_timeout) ||
5652             nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
5653                         cur_params.dot11MeshHWMPactivePathTimeout) ||
5654             nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
5655                         cur_params.dot11MeshHWMPpreqMinInterval) ||
5656             nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
5657                         cur_params.dot11MeshHWMPperrMinInterval) ||
5658             nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
5659                         cur_params.dot11MeshHWMPnetDiameterTraversalTime) ||
5660             nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
5661                        cur_params.dot11MeshHWMPRootMode) ||
5662             nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
5663                         cur_params.dot11MeshHWMPRannInterval) ||
5664             nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
5665                        cur_params.dot11MeshGateAnnouncementProtocol) ||
5666             nla_put_u8(msg, NL80211_MESHCONF_FORWARDING,
5667                        cur_params.dot11MeshForwarding) ||
5668             nla_put_u32(msg, NL80211_MESHCONF_RSSI_THRESHOLD,
5669                         cur_params.rssi_threshold) ||
5670             nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE,
5671                         cur_params.ht_opmode) ||
5672             nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
5673                         cur_params.dot11MeshHWMPactivePathToRootTimeout) ||
5674             nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
5675                         cur_params.dot11MeshHWMProotInterval) ||
5676             nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
5677                         cur_params.dot11MeshHWMPconfirmationInterval) ||
5678             nla_put_u32(msg, NL80211_MESHCONF_POWER_MODE,
5679                         cur_params.power_mode) ||
5680             nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW,
5681                         cur_params.dot11MeshAwakeWindowDuration) ||
5682             nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT,
5683                         cur_params.plink_timeout))
5684                 goto nla_put_failure;
5685         nla_nest_end(msg, pinfoattr);
5686         genlmsg_end(msg, hdr);
5687         return genlmsg_reply(msg, info);
5688
5689  nla_put_failure:
5690         genlmsg_cancel(msg, hdr);
5691  out:
5692         nlmsg_free(msg);
5693         return -ENOBUFS;
5694 }
5695
5696 static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
5697         [NL80211_MESHCONF_RETRY_TIMEOUT] = { .type = NLA_U16 },
5698         [NL80211_MESHCONF_CONFIRM_TIMEOUT] = { .type = NLA_U16 },
5699         [NL80211_MESHCONF_HOLDING_TIMEOUT] = { .type = NLA_U16 },
5700         [NL80211_MESHCONF_MAX_PEER_LINKS] = { .type = NLA_U16 },
5701         [NL80211_MESHCONF_MAX_RETRIES] = { .type = NLA_U8 },
5702         [NL80211_MESHCONF_TTL] = { .type = NLA_U8 },
5703         [NL80211_MESHCONF_ELEMENT_TTL] = { .type = NLA_U8 },
5704         [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = { .type = NLA_U8 },
5705         [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] = { .type = NLA_U32 },
5706         [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
5707         [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
5708         [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = { .type = NLA_U16 },
5709         [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
5710         [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 },
5711         [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] = { .type = NLA_U16 },
5712         [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 },
5713         [NL80211_MESHCONF_HWMP_ROOTMODE] = { .type = NLA_U8 },
5714         [NL80211_MESHCONF_HWMP_RANN_INTERVAL] = { .type = NLA_U16 },
5715         [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = { .type = NLA_U8 },
5716         [NL80211_MESHCONF_FORWARDING] = { .type = NLA_U8 },
5717         [NL80211_MESHCONF_RSSI_THRESHOLD] = { .type = NLA_U32 },
5718         [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 },
5719         [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 },
5720         [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] = { .type = NLA_U16 },
5721         [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] = { .type = NLA_U16 },
5722         [NL80211_MESHCONF_POWER_MODE] = { .type = NLA_U32 },
5723         [NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 },
5724         [NL80211_MESHCONF_PLINK_TIMEOUT] = { .type = NLA_U32 },
5725 };
5726
5727 static const struct nla_policy
5728         nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
5729         [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 },
5730         [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
5731         [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
5732         [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
5733         [NL80211_MESH_SETUP_AUTH_PROTOCOL] = { .type = NLA_U8 },
5734         [NL80211_MESH_SETUP_USERSPACE_MPM] = { .type = NLA_FLAG },
5735         [NL80211_MESH_SETUP_IE] = { .type = NLA_BINARY,
5736                                     .len = IEEE80211_MAX_DATA_LEN },
5737         [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
5738 };
5739
5740 static int nl80211_check_bool(const struct nlattr *nla, u8 min, u8 max, bool *out)
5741 {
5742         u8 val = nla_get_u8(nla);
5743         if (val < min || val > max)
5744                 return -EINVAL;
5745         *out = val;
5746         return 0;
5747 }
5748
5749 static int nl80211_check_u8(const struct nlattr *nla, u8 min, u8 max, u8 *out)
5750 {
5751         u8 val = nla_get_u8(nla);
5752         if (val < min || val > max)
5753                 return -EINVAL;
5754         *out = val;
5755         return 0;
5756 }
5757
5758 static int nl80211_check_u16(const struct nlattr *nla, u16 min, u16 max, u16 *out)
5759 {
5760         u16 val = nla_get_u16(nla);
5761         if (val < min || val > max)
5762                 return -EINVAL;
5763         *out = val;
5764         return 0;
5765 }
5766
5767 static int nl80211_check_u32(const struct nlattr *nla, u32 min, u32 max, u32 *out)
5768 {
5769         u32 val = nla_get_u32(nla);
5770         if (val < min || val > max)
5771                 return -EINVAL;
5772         *out = val;
5773         return 0;
5774 }
5775
5776 static int nl80211_check_s32(const struct nlattr *nla, s32 min, s32 max, s32 *out)
5777 {
5778         s32 val = nla_get_s32(nla);
5779         if (val < min || val > max)
5780                 return -EINVAL;
5781         *out = val;
5782         return 0;
5783 }
5784
5785 static int nl80211_check_power_mode(const struct nlattr *nla,
5786                                     enum nl80211_mesh_power_mode min,
5787                                     enum nl80211_mesh_power_mode max,
5788                                     enum nl80211_mesh_power_mode *out)
5789 {
5790         u32 val = nla_get_u32(nla);
5791         if (val < min || val > max)
5792                 return -EINVAL;
5793         *out = val;
5794         return 0;
5795 }
5796
5797 static int nl80211_parse_mesh_config(struct genl_info *info,
5798                                      struct mesh_config *cfg,
5799                                      u32 *mask_out)
5800 {
5801         struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
5802         u32 mask = 0;
5803         u16 ht_opmode;
5804
5805 #define FILL_IN_MESH_PARAM_IF_SET(tb, cfg, param, min, max, mask, attr, fn) \
5806 do {                                                                        \
5807         if (tb[attr]) {                                                     \
5808                 if (fn(tb[attr], min, max, &cfg->param))                    \
5809                         return -EINVAL;                                     \
5810                 mask |= (1 << (attr - 1));                                  \
5811         }                                                                   \
5812 } while (0)
5813
5814         if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
5815                 return -EINVAL;
5816         if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX,
5817                              info->attrs[NL80211_ATTR_MESH_CONFIG],
5818                              nl80211_meshconf_params_policy))
5819                 return -EINVAL;
5820
5821         /* This makes sure that there aren't more than 32 mesh config
5822          * parameters (otherwise our bitfield scheme would not work.) */
5823         BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
5824
5825         /* Fill in the params struct */
5826         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, 1, 255,
5827                                   mask, NL80211_MESHCONF_RETRY_TIMEOUT,
5828                                   nl80211_check_u16);
5829         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, 1, 255,
5830                                   mask, NL80211_MESHCONF_CONFIRM_TIMEOUT,
5831                                   nl80211_check_u16);
5832         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, 1, 255,
5833                                   mask, NL80211_MESHCONF_HOLDING_TIMEOUT,
5834                                   nl80211_check_u16);
5835         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, 0, 255,
5836                                   mask, NL80211_MESHCONF_MAX_PEER_LINKS,
5837                                   nl80211_check_u16);
5838         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, 0, 16,
5839                                   mask, NL80211_MESHCONF_MAX_RETRIES,
5840                                   nl80211_check_u8);
5841         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, 1, 255,
5842                                   mask, NL80211_MESHCONF_TTL, nl80211_check_u8);
5843         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl, 1, 255,
5844                                   mask, NL80211_MESHCONF_ELEMENT_TTL,
5845                                   nl80211_check_u8);
5846         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, 0, 1,
5847                                   mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
5848                                   nl80211_check_bool);
5849         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor,
5850                                   1, 255, mask,
5851                                   NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
5852                                   nl80211_check_u32);
5853         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, 0, 255,
5854                                   mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
5855                                   nl80211_check_u8);
5856         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, 1, 65535,
5857                                   mask, NL80211_MESHCONF_PATH_REFRESH_TIME,
5858                                   nl80211_check_u32);
5859         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, 1, 65535,
5860                                   mask, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
5861                                   nl80211_check_u16);
5862         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
5863                                   1, 65535, mask,
5864                                   NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
5865                                   nl80211_check_u32);
5866         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval,
5867                                   1, 65535, mask,
5868                                   NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
5869                                   nl80211_check_u16);
5870         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval,
5871                                   1, 65535, mask,
5872                                   NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
5873                                   nl80211_check_u16);
5874         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
5875                                   dot11MeshHWMPnetDiameterTraversalTime,
5876                                   1, 65535, mask,
5877                                   NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
5878                                   nl80211_check_u16);
5879         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, 0, 4,
5880                                   mask, NL80211_MESHCONF_HWMP_ROOTMODE,
5881                                   nl80211_check_u8);
5882         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, 1, 65535,
5883                                   mask, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
5884                                   nl80211_check_u16);
5885         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
5886                                   dot11MeshGateAnnouncementProtocol, 0, 1,
5887                                   mask, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
5888                                   nl80211_check_bool);
5889         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding, 0, 1,
5890                                   mask, NL80211_MESHCONF_FORWARDING,
5891                                   nl80211_check_bool);
5892         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold, -255, 0,
5893                                   mask, NL80211_MESHCONF_RSSI_THRESHOLD,
5894                                   nl80211_check_s32);
5895         /*
5896          * Check HT operation mode based on
5897          * IEEE 802.11 2012 8.4.2.59 HT Operation element.
5898          */
5899         if (tb[NL80211_MESHCONF_HT_OPMODE]) {
5900                 ht_opmode = nla_get_u16(tb[NL80211_MESHCONF_HT_OPMODE]);
5901
5902                 if (ht_opmode & ~(IEEE80211_HT_OP_MODE_PROTECTION |
5903                                   IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT |
5904                                   IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT))
5905                         return -EINVAL;
5906
5907                 if ((ht_opmode & IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT) &&
5908                     (ht_opmode & IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT))
5909                         return -EINVAL;
5910
5911                 switch (ht_opmode & IEEE80211_HT_OP_MODE_PROTECTION) {
5912                 case IEEE80211_HT_OP_MODE_PROTECTION_NONE:
5913                 case IEEE80211_HT_OP_MODE_PROTECTION_20MHZ:
5914                         if (ht_opmode & IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT)
5915                                 return -EINVAL;
5916                         break;
5917                 case IEEE80211_HT_OP_MODE_PROTECTION_NONMEMBER:
5918                 case IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED:
5919                         if (!(ht_opmode & IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT))
5920                                 return -EINVAL;
5921                         break;
5922                 }
5923                 cfg->ht_opmode = ht_opmode;
5924                 mask |= (1 << (NL80211_MESHCONF_HT_OPMODE - 1));
5925         }
5926         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathToRootTimeout,
5927                                   1, 65535, mask,
5928                                   NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
5929                                   nl80211_check_u32);
5930         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval, 1, 65535,
5931                                   mask, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
5932                                   nl80211_check_u16);
5933         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
5934                                   dot11MeshHWMPconfirmationInterval,
5935                                   1, 65535, mask,
5936                                   NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
5937                                   nl80211_check_u16);
5938         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, power_mode,
5939                                   NL80211_MESH_POWER_ACTIVE,
5940                                   NL80211_MESH_POWER_MAX,
5941                                   mask, NL80211_MESHCONF_POWER_MODE,
5942                                   nl80211_check_power_mode);
5943         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration,
5944                                   0, 65535, mask,
5945                                   NL80211_MESHCONF_AWAKE_WINDOW, nl80211_check_u16);
5946         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, plink_timeout, 0, 0xffffffff,
5947                                   mask, NL80211_MESHCONF_PLINK_TIMEOUT,
5948                                   nl80211_check_u32);
5949         if (mask_out)
5950                 *mask_out = mask;
5951
5952         return 0;
5953
5954 #undef FILL_IN_MESH_PARAM_IF_SET
5955 }
5956
5957 static int nl80211_parse_mesh_setup(struct genl_info *info,
5958                                      struct mesh_setup *setup)
5959 {
5960         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5961         struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
5962
5963         if (!info->attrs[NL80211_ATTR_MESH_SETUP])
5964                 return -EINVAL;
5965         if (nla_parse_nested(tb, NL80211_MESH_SETUP_ATTR_MAX,
5966                              info->attrs[NL80211_ATTR_MESH_SETUP],
5967                              nl80211_mesh_setup_params_policy))
5968                 return -EINVAL;
5969
5970         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])
5971                 setup->sync_method =
5972                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ?
5973                  IEEE80211_SYNC_METHOD_VENDOR :
5974                  IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET;
5975
5976         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
5977                 setup->path_sel_proto =
5978                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
5979                  IEEE80211_PATH_PROTOCOL_VENDOR :
5980                  IEEE80211_PATH_PROTOCOL_HWMP;
5981
5982         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
5983                 setup->path_metric =
5984                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
5985                  IEEE80211_PATH_METRIC_VENDOR :
5986                  IEEE80211_PATH_METRIC_AIRTIME;
5987
5988         if (tb[NL80211_MESH_SETUP_IE]) {
5989                 struct nlattr *ieattr =
5990                         tb[NL80211_MESH_SETUP_IE];
5991                 if (!is_valid_ie_attr(ieattr))
5992                         return -EINVAL;
5993                 setup->ie = nla_data(ieattr);
5994                 setup->ie_len = nla_len(ieattr);
5995         }
5996         if (tb[NL80211_MESH_SETUP_USERSPACE_MPM] &&
5997             !(rdev->wiphy.features & NL80211_FEATURE_USERSPACE_MPM))
5998                 return -EINVAL;
5999         setup->user_mpm = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_MPM]);
6000         setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
6001         setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
6002         if (setup->is_secure)
6003                 setup->user_mpm = true;
6004
6005         if (tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]) {
6006                 if (!setup->user_mpm)
6007                         return -EINVAL;
6008                 setup->auth_id =
6009                         nla_get_u8(tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]);
6010         }
6011
6012         return 0;
6013 }
6014
6015 static int nl80211_update_mesh_config(struct sk_buff *skb,
6016                                       struct genl_info *info)
6017 {
6018         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6019         struct net_device *dev = info->user_ptr[1];
6020         struct wireless_dev *wdev = dev->ieee80211_ptr;
6021         struct mesh_config cfg;
6022         u32 mask;
6023         int err;
6024
6025         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
6026                 return -EOPNOTSUPP;
6027
6028         if (!rdev->ops->update_mesh_config)
6029                 return -EOPNOTSUPP;
6030
6031         err = nl80211_parse_mesh_config(info, &cfg, &mask);
6032         if (err)
6033                 return err;
6034
6035         wdev_lock(wdev);
6036         if (!wdev->mesh_id_len)
6037                 err = -ENOLINK;
6038
6039         if (!err)
6040                 err = rdev_update_mesh_config(rdev, dev, mask, &cfg);
6041
6042         wdev_unlock(wdev);
6043
6044         return err;
6045 }
6046
6047 static int nl80211_put_regdom(const struct ieee80211_regdomain *regdom,
6048                               struct sk_buff *msg)
6049 {
6050         struct nlattr *nl_reg_rules;
6051         unsigned int i;
6052
6053         if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, regdom->alpha2) ||
6054             (regdom->dfs_region &&
6055              nla_put_u8(msg, NL80211_ATTR_DFS_REGION, regdom->dfs_region)))
6056                 goto nla_put_failure;
6057
6058         nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES);
6059         if (!nl_reg_rules)
6060                 goto nla_put_failure;
6061
6062         for (i = 0; i < regdom->n_reg_rules; i++) {
6063                 struct nlattr *nl_reg_rule;
6064                 const struct ieee80211_reg_rule *reg_rule;
6065                 const struct ieee80211_freq_range *freq_range;
6066                 const struct ieee80211_power_rule *power_rule;
6067                 unsigned int max_bandwidth_khz;
6068
6069                 reg_rule = &regdom->reg_rules[i];
6070                 freq_range = &reg_rule->freq_range;
6071                 power_rule = &reg_rule->power_rule;
6072
6073                 nl_reg_rule = nla_nest_start(msg, i);
6074                 if (!nl_reg_rule)
6075                         goto nla_put_failure;
6076
6077                 max_bandwidth_khz = freq_range->max_bandwidth_khz;
6078                 if (!max_bandwidth_khz)
6079                         max_bandwidth_khz = reg_get_max_bandwidth(regdom,
6080                                                                   reg_rule);
6081
6082                 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS,
6083                                 reg_rule->flags) ||
6084                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START,
6085                                 freq_range->start_freq_khz) ||
6086                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END,
6087                                 freq_range->end_freq_khz) ||
6088                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
6089                                 max_bandwidth_khz) ||
6090                     nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
6091                                 power_rule->max_antenna_gain) ||
6092                     nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
6093                                 power_rule->max_eirp) ||
6094                     nla_put_u32(msg, NL80211_ATTR_DFS_CAC_TIME,
6095                                 reg_rule->dfs_cac_ms))
6096                         goto nla_put_failure;
6097
6098                 nla_nest_end(msg, nl_reg_rule);
6099         }
6100
6101         nla_nest_end(msg, nl_reg_rules);
6102         return 0;
6103
6104 nla_put_failure:
6105         return -EMSGSIZE;
6106 }
6107
6108 static int nl80211_get_reg_do(struct sk_buff *skb, struct genl_info *info)
6109 {
6110         const struct ieee80211_regdomain *regdom = NULL;
6111         struct cfg80211_registered_device *rdev;
6112         struct wiphy *wiphy = NULL;
6113         struct sk_buff *msg;
6114         void *hdr;
6115
6116         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6117         if (!msg)
6118                 return -ENOBUFS;
6119
6120         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
6121                              NL80211_CMD_GET_REG);
6122         if (!hdr)
6123                 goto put_failure;
6124
6125         if (info->attrs[NL80211_ATTR_WIPHY]) {
6126                 bool self_managed;
6127
6128                 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
6129                 if (IS_ERR(rdev)) {
6130                         nlmsg_free(msg);
6131                         return PTR_ERR(rdev);
6132                 }
6133
6134                 wiphy = &rdev->wiphy;
6135                 self_managed = wiphy->regulatory_flags &
6136                                REGULATORY_WIPHY_SELF_MANAGED;
6137                 regdom = get_wiphy_regdom(wiphy);
6138
6139                 /* a self-managed-reg device must have a private regdom */
6140                 if (WARN_ON(!regdom && self_managed)) {
6141                         nlmsg_free(msg);
6142                         return -EINVAL;
6143                 }
6144
6145                 if (regdom &&
6146                     nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
6147                         goto nla_put_failure;
6148         }
6149
6150         if (!wiphy && reg_last_request_cell_base() &&
6151             nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
6152                         NL80211_USER_REG_HINT_CELL_BASE))
6153                 goto nla_put_failure;
6154
6155         rcu_read_lock();
6156
6157         if (!regdom)
6158                 regdom = rcu_dereference(cfg80211_regdomain);
6159
6160         if (nl80211_put_regdom(regdom, msg))
6161                 goto nla_put_failure_rcu;
6162
6163         rcu_read_unlock();
6164
6165         genlmsg_end(msg, hdr);
6166         return genlmsg_reply(msg, info);
6167
6168 nla_put_failure_rcu:
6169         rcu_read_unlock();
6170 nla_put_failure:
6171         genlmsg_cancel(msg, hdr);
6172 put_failure:
6173         nlmsg_free(msg);
6174         return -EMSGSIZE;
6175 }
6176
6177 static int nl80211_send_regdom(struct sk_buff *msg, struct netlink_callback *cb,
6178                                u32 seq, int flags, struct wiphy *wiphy,
6179                                const struct ieee80211_regdomain *regdom)
6180 {
6181         void *hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
6182                                    NL80211_CMD_GET_REG);
6183
6184         if (!hdr)
6185                 return -1;
6186
6187         genl_dump_check_consistent(cb, hdr, &nl80211_fam);
6188
6189         if (nl80211_put_regdom(regdom, msg))
6190                 goto nla_put_failure;
6191
6192         if (!wiphy && reg_last_request_cell_base() &&
6193             nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
6194                         NL80211_USER_REG_HINT_CELL_BASE))
6195                 goto nla_put_failure;
6196
6197         if (wiphy &&
6198             nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
6199                 goto nla_put_failure;
6200
6201         if (wiphy && wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
6202             nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
6203                 goto nla_put_failure;
6204
6205         genlmsg_end(msg, hdr);
6206         return 0;
6207
6208 nla_put_failure:
6209         genlmsg_cancel(msg, hdr);
6210         return -EMSGSIZE;
6211 }
6212
6213 static int nl80211_get_reg_dump(struct sk_buff *skb,
6214                                 struct netlink_callback *cb)
6215 {
6216         const struct ieee80211_regdomain *regdom = NULL;
6217         struct cfg80211_registered_device *rdev;
6218         int err, reg_idx, start = cb->args[2];
6219
6220         rtnl_lock();
6221
6222         if (cfg80211_regdomain && start == 0) {
6223                 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
6224                                           NLM_F_MULTI, NULL,
6225                                           rtnl_dereference(cfg80211_regdomain));
6226                 if (err < 0)
6227                         goto out_err;
6228         }
6229
6230         /* the global regdom is idx 0 */
6231         reg_idx = 1;
6232         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
6233                 regdom = get_wiphy_regdom(&rdev->wiphy);
6234                 if (!regdom)
6235                         continue;
6236
6237                 if (++reg_idx <= start)
6238                         continue;
6239
6240                 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
6241                                           NLM_F_MULTI, &rdev->wiphy, regdom);
6242                 if (err < 0) {
6243                         reg_idx--;
6244                         break;
6245                 }
6246         }
6247
6248         cb->args[2] = reg_idx;
6249         err = skb->len;
6250 out_err:
6251         rtnl_unlock();
6252         return err;
6253 }
6254
6255 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
6256 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
6257         [NL80211_ATTR_REG_RULE_FLAGS]           = { .type = NLA_U32 },
6258         [NL80211_ATTR_FREQ_RANGE_START]         = { .type = NLA_U32 },
6259         [NL80211_ATTR_FREQ_RANGE_END]           = { .type = NLA_U32 },
6260         [NL80211_ATTR_FREQ_RANGE_MAX_BW]        = { .type = NLA_U32 },
6261         [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]  = { .type = NLA_U32 },
6262         [NL80211_ATTR_POWER_RULE_MAX_EIRP]      = { .type = NLA_U32 },
6263         [NL80211_ATTR_DFS_CAC_TIME]             = { .type = NLA_U32 },
6264 };
6265
6266 static int parse_reg_rule(struct nlattr *tb[],
6267         struct ieee80211_reg_rule *reg_rule)
6268 {
6269         struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
6270         struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
6271
6272         if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
6273                 return -EINVAL;
6274         if (!tb[NL80211_ATTR_FREQ_RANGE_START])
6275                 return -EINVAL;
6276         if (!tb[NL80211_ATTR_FREQ_RANGE_END])
6277                 return -EINVAL;
6278         if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
6279                 return -EINVAL;
6280         if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
6281                 return -EINVAL;
6282
6283         reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
6284
6285         freq_range->start_freq_khz =
6286                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
6287         freq_range->end_freq_khz =
6288                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
6289         freq_range->max_bandwidth_khz =
6290                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
6291
6292         power_rule->max_eirp =
6293                 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
6294
6295         if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
6296                 power_rule->max_antenna_gain =
6297                         nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
6298
6299         if (tb[NL80211_ATTR_DFS_CAC_TIME])
6300                 reg_rule->dfs_cac_ms =
6301                         nla_get_u32(tb[NL80211_ATTR_DFS_CAC_TIME]);
6302
6303         return 0;
6304 }
6305
6306 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
6307 {
6308         struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
6309         struct nlattr *nl_reg_rule;
6310         char *alpha2;
6311         int rem_reg_rules, r;
6312         u32 num_rules = 0, rule_idx = 0, size_of_regd;
6313         enum nl80211_dfs_regions dfs_region = NL80211_DFS_UNSET;
6314         struct ieee80211_regdomain *rd;
6315
6316         if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
6317                 return -EINVAL;
6318
6319         if (!info->attrs[NL80211_ATTR_REG_RULES])
6320                 return -EINVAL;
6321
6322         alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
6323
6324         if (info->attrs[NL80211_ATTR_DFS_REGION])
6325                 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]);
6326
6327         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
6328                             rem_reg_rules) {
6329                 num_rules++;
6330                 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
6331                         return -EINVAL;
6332         }
6333
6334         if (!reg_is_valid_request(alpha2))
6335                 return -EINVAL;
6336
6337         size_of_regd = sizeof(struct ieee80211_regdomain) +
6338                        num_rules * sizeof(struct ieee80211_reg_rule);
6339
6340         rd = kzalloc(size_of_regd, GFP_KERNEL);
6341         if (!rd)
6342                 return -ENOMEM;
6343
6344         rd->n_reg_rules = num_rules;
6345         rd->alpha2[0] = alpha2[0];
6346         rd->alpha2[1] = alpha2[1];
6347
6348         /*
6349          * Disable DFS master mode if the DFS region was
6350          * not supported or known on this kernel.
6351          */
6352         if (reg_supported_dfs_region(dfs_region))
6353                 rd->dfs_region = dfs_region;
6354
6355         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
6356                             rem_reg_rules) {
6357                 r = nla_parse_nested(tb, NL80211_REG_RULE_ATTR_MAX,
6358                                      nl_reg_rule, reg_rule_policy);
6359                 if (r)
6360                         goto bad_reg;
6361                 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
6362                 if (r)
6363                         goto bad_reg;
6364
6365                 rule_idx++;
6366
6367                 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
6368                         r = -EINVAL;
6369                         goto bad_reg;
6370                 }
6371         }
6372
6373         /* set_regdom takes ownership of rd */
6374         return set_regdom(rd, REGD_SOURCE_CRDA);
6375  bad_reg:
6376         kfree(rd);
6377         return r;
6378 }
6379 #endif /* CONFIG_CFG80211_CRDA_SUPPORT */
6380
6381 static int validate_scan_freqs(struct nlattr *freqs)
6382 {
6383         struct nlattr *attr1, *attr2;
6384         int n_channels = 0, tmp1, tmp2;
6385
6386         nla_for_each_nested(attr1, freqs, tmp1) {
6387                 n_channels++;
6388                 /*
6389                  * Some hardware has a limited channel list for
6390                  * scanning, and it is pretty much nonsensical
6391                  * to scan for a channel twice, so disallow that
6392                  * and don't require drivers to check that the
6393                  * channel list they get isn't longer than what
6394                  * they can scan, as long as they can scan all
6395                  * the channels they registered at once.
6396                  */
6397                 nla_for_each_nested(attr2, freqs, tmp2)
6398                         if (attr1 != attr2 &&
6399                             nla_get_u32(attr1) == nla_get_u32(attr2))
6400                                 return 0;
6401         }
6402
6403         return n_channels;
6404 }
6405
6406 static bool is_band_valid(struct wiphy *wiphy, enum nl80211_band b)
6407 {
6408         return b < NUM_NL80211_BANDS && wiphy->bands[b];
6409 }
6410
6411 static int parse_bss_select(struct nlattr *nla, struct wiphy *wiphy,
6412                             struct cfg80211_bss_selection *bss_select)
6413 {
6414         struct nlattr *attr[NL80211_BSS_SELECT_ATTR_MAX + 1];
6415         struct nlattr *nest;
6416         int err;
6417         bool found = false;
6418         int i;
6419
6420         /* only process one nested attribute */
6421         nest = nla_data(nla);
6422         if (!nla_ok(nest, nla_len(nest)))
6423                 return -EINVAL;
6424
6425         err = nla_parse_nested(attr, NL80211_BSS_SELECT_ATTR_MAX, nest,
6426                                nl80211_bss_select_policy);
6427         if (err)
6428                 return err;
6429
6430         /* only one attribute may be given */
6431         for (i = 0; i <= NL80211_BSS_SELECT_ATTR_MAX; i++) {
6432                 if (attr[i]) {
6433                         if (found)
6434                                 return -EINVAL;
6435                         found = true;
6436                 }
6437         }
6438
6439         bss_select->behaviour = __NL80211_BSS_SELECT_ATTR_INVALID;
6440
6441         if (attr[NL80211_BSS_SELECT_ATTR_RSSI])
6442                 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI;
6443
6444         if (attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]) {
6445                 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_BAND_PREF;
6446                 bss_select->param.band_pref =
6447                         nla_get_u32(attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]);
6448                 if (!is_band_valid(wiphy, bss_select->param.band_pref))
6449                         return -EINVAL;
6450         }
6451
6452         if (attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]) {
6453                 struct nl80211_bss_select_rssi_adjust *adj_param;
6454
6455                 adj_param = nla_data(attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]);
6456                 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI_ADJUST;
6457                 bss_select->param.adjust.band = adj_param->band;
6458                 bss_select->param.adjust.delta = adj_param->delta;
6459                 if (!is_band_valid(wiphy, bss_select->param.adjust.band))
6460                         return -EINVAL;
6461         }
6462
6463         /* user-space did not provide behaviour attribute */
6464         if (bss_select->behaviour == __NL80211_BSS_SELECT_ATTR_INVALID)
6465                 return -EINVAL;
6466
6467         if (!(wiphy->bss_select_support & BIT(bss_select->behaviour)))
6468                 return -EINVAL;
6469
6470         return 0;
6471 }
6472
6473 static int nl80211_parse_random_mac(struct nlattr **attrs,
6474                                     u8 *mac_addr, u8 *mac_addr_mask)
6475 {
6476         int i;
6477
6478         if (!attrs[NL80211_ATTR_MAC] && !attrs[NL80211_ATTR_MAC_MASK]) {
6479                 eth_zero_addr(mac_addr);
6480                 eth_zero_addr(mac_addr_mask);
6481                 mac_addr[0] = 0x2;
6482                 mac_addr_mask[0] = 0x3;
6483
6484                 return 0;
6485         }
6486
6487         /* need both or none */
6488         if (!attrs[NL80211_ATTR_MAC] || !attrs[NL80211_ATTR_MAC_MASK])
6489                 return -EINVAL;
6490
6491         memcpy(mac_addr, nla_data(attrs[NL80211_ATTR_MAC]), ETH_ALEN);
6492         memcpy(mac_addr_mask, nla_data(attrs[NL80211_ATTR_MAC_MASK]), ETH_ALEN);
6493
6494         /* don't allow or configure an mcast address */
6495         if (!is_multicast_ether_addr(mac_addr_mask) ||
6496             is_multicast_ether_addr(mac_addr))
6497                 return -EINVAL;
6498
6499         /*
6500          * allow users to pass a MAC address that has bits set outside
6501          * of the mask, but don't bother drivers with having to deal
6502          * with such bits
6503          */
6504         for (i = 0; i < ETH_ALEN; i++)
6505                 mac_addr[i] &= mac_addr_mask[i];
6506
6507         return 0;
6508 }
6509
6510 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
6511 {
6512         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6513         struct wireless_dev *wdev = info->user_ptr[1];
6514         struct cfg80211_scan_request *request;
6515         struct nlattr *attr;
6516         struct wiphy *wiphy;
6517         int err, tmp, n_ssids = 0, n_channels, i;
6518         size_t ie_len;
6519
6520         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6521                 return -EINVAL;
6522
6523         wiphy = &rdev->wiphy;
6524
6525         if (wdev->iftype == NL80211_IFTYPE_NAN)
6526                 return -EOPNOTSUPP;
6527
6528         if (!rdev->ops->scan)
6529                 return -EOPNOTSUPP;
6530
6531         if (rdev->scan_req || rdev->scan_msg) {
6532                 err = -EBUSY;
6533                 goto unlock;
6534         }
6535
6536         if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
6537                 n_channels = validate_scan_freqs(
6538                                 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
6539                 if (!n_channels) {
6540                         err = -EINVAL;
6541                         goto unlock;
6542                 }
6543         } else {
6544                 n_channels = ieee80211_get_num_supported_channels(wiphy);
6545         }
6546
6547         if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
6548                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
6549                         n_ssids++;
6550
6551         if (n_ssids > wiphy->max_scan_ssids) {
6552                 err = -EINVAL;
6553                 goto unlock;
6554         }
6555
6556         if (info->attrs[NL80211_ATTR_IE])
6557                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6558         else
6559                 ie_len = 0;
6560
6561         if (ie_len > wiphy->max_scan_ie_len) {
6562                 err = -EINVAL;
6563                 goto unlock;
6564         }
6565
6566         request = kzalloc(sizeof(*request)
6567                         + sizeof(*request->ssids) * n_ssids
6568                         + sizeof(*request->channels) * n_channels
6569                         + ie_len, GFP_KERNEL);
6570         if (!request) {
6571                 err = -ENOMEM;
6572                 goto unlock;
6573         }
6574
6575         if (n_ssids)
6576                 request->ssids = (void *)&request->channels[n_channels];
6577         request->n_ssids = n_ssids;
6578         if (ie_len) {
6579                 if (n_ssids)
6580                         request->ie = (void *)(request->ssids + n_ssids);
6581                 else
6582                         request->ie = (void *)(request->channels + n_channels);
6583         }
6584
6585         i = 0;
6586         if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
6587                 /* user specified, bail out if channel not found */
6588                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) {
6589                         struct ieee80211_channel *chan;
6590
6591                         chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
6592
6593                         if (!chan) {
6594                                 err = -EINVAL;
6595                                 goto out_free;
6596                         }
6597
6598                         /* ignore disabled channels */
6599                         if (chan->flags & IEEE80211_CHAN_DISABLED)
6600                                 continue;
6601
6602                         request->channels[i] = chan;
6603                         i++;
6604                 }
6605         } else {
6606                 enum nl80211_band band;
6607
6608                 /* all channels */
6609                 for (band = 0; band < NUM_NL80211_BANDS; band++) {
6610                         int j;
6611
6612                         if (!wiphy->bands[band])
6613                                 continue;
6614                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
6615                                 struct ieee80211_channel *chan;
6616
6617                                 chan = &wiphy->bands[band]->channels[j];
6618
6619                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
6620                                         continue;
6621
6622                                 request->channels[i] = chan;
6623                                 i++;
6624                         }
6625                 }
6626         }
6627
6628         if (!i) {
6629                 err = -EINVAL;
6630                 goto out_free;
6631         }
6632
6633         request->n_channels = i;
6634
6635         i = 0;
6636         if (n_ssids) {
6637                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
6638                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
6639                                 err = -EINVAL;
6640                                 goto out_free;
6641                         }
6642                         request->ssids[i].ssid_len = nla_len(attr);
6643                         memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
6644                         i++;
6645                 }
6646         }
6647
6648         if (info->attrs[NL80211_ATTR_IE]) {
6649                 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6650                 memcpy((void *)request->ie,
6651                        nla_data(info->attrs[NL80211_ATTR_IE]),
6652                        request->ie_len);
6653         }
6654
6655         for (i = 0; i < NUM_NL80211_BANDS; i++)
6656                 if (wiphy->bands[i])
6657                         request->rates[i] =
6658                                 (1 << wiphy->bands[i]->n_bitrates) - 1;
6659
6660         if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
6661                 nla_for_each_nested(attr,
6662                                     info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
6663                                     tmp) {
6664                         enum nl80211_band band = nla_type(attr);
6665
6666                         if (band < 0 || band >= NUM_NL80211_BANDS) {
6667                                 err = -EINVAL;
6668                                 goto out_free;
6669                         }
6670
6671                         if (!wiphy->bands[band])
6672                                 continue;
6673
6674                         err = ieee80211_get_ratemask(wiphy->bands[band],
6675                                                      nla_data(attr),
6676                                                      nla_len(attr),
6677                                                      &request->rates[band]);
6678                         if (err)
6679                                 goto out_free;
6680                 }
6681         }
6682
6683         if (info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]) {
6684                 if (!wiphy_ext_feature_isset(wiphy,
6685                                         NL80211_EXT_FEATURE_SET_SCAN_DWELL)) {
6686                         err = -EOPNOTSUPP;
6687                         goto out_free;
6688                 }
6689
6690                 request->duration =
6691                         nla_get_u16(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]);
6692                 request->duration_mandatory =
6693                         nla_get_flag(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION_MANDATORY]);
6694         }
6695
6696         if (info->attrs[NL80211_ATTR_SCAN_FLAGS]) {
6697                 request->flags = nla_get_u32(
6698                         info->attrs[NL80211_ATTR_SCAN_FLAGS]);
6699                 if ((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
6700                     !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) {
6701                         err = -EOPNOTSUPP;
6702                         goto out_free;
6703                 }
6704
6705                 if (request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
6706                         if (!(wiphy->features &
6707                                         NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR)) {
6708                                 err = -EOPNOTSUPP;
6709                                 goto out_free;
6710                         }
6711
6712                         if (wdev->current_bss) {
6713                                 err = -EOPNOTSUPP;
6714                                 goto out_free;
6715                         }
6716
6717                         err = nl80211_parse_random_mac(info->attrs,
6718                                                        request->mac_addr,
6719                                                        request->mac_addr_mask);
6720                         if (err)
6721                                 goto out_free;
6722                 }
6723         }
6724
6725         request->no_cck =
6726                 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
6727
6728         /* Initial implementation used NL80211_ATTR_MAC to set the specific
6729          * BSSID to scan for. This was problematic because that same attribute
6730          * was already used for another purpose (local random MAC address). The
6731          * NL80211_ATTR_BSSID attribute was added to fix this. For backwards
6732          * compatibility with older userspace components, also use the
6733          * NL80211_ATTR_MAC value here if it can be determined to be used for
6734          * the specific BSSID use case instead of the random MAC address
6735          * (NL80211_ATTR_SCAN_FLAGS is used to enable random MAC address use).
6736          */
6737         if (info->attrs[NL80211_ATTR_BSSID])
6738                 memcpy(request->bssid,
6739                        nla_data(info->attrs[NL80211_ATTR_BSSID]), ETH_ALEN);
6740         else if (!(request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) &&
6741                  info->attrs[NL80211_ATTR_MAC])
6742                 memcpy(request->bssid, nla_data(info->attrs[NL80211_ATTR_MAC]),
6743                        ETH_ALEN);
6744         else
6745                 eth_broadcast_addr(request->bssid);
6746
6747         request->wdev = wdev;
6748         request->wiphy = &rdev->wiphy;
6749         request->scan_start = jiffies;
6750
6751         rdev->scan_req = request;
6752         err = rdev_scan(rdev, request);
6753
6754         if (!err) {
6755                 nl80211_send_scan_start(rdev, wdev);
6756                 if (wdev->netdev)
6757                         dev_hold(wdev->netdev);
6758         } else {
6759  out_free:
6760                 rdev->scan_req = NULL;
6761                 kfree(request);
6762         }
6763
6764  unlock:
6765         return err;
6766 }
6767
6768 static int nl80211_abort_scan(struct sk_buff *skb, struct genl_info *info)
6769 {
6770         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6771         struct wireless_dev *wdev = info->user_ptr[1];
6772
6773         if (!rdev->ops->abort_scan)
6774                 return -EOPNOTSUPP;
6775
6776         if (rdev->scan_msg)
6777                 return 0;
6778
6779         if (!rdev->scan_req)
6780                 return -ENOENT;
6781
6782         rdev_abort_scan(rdev, wdev);
6783         return 0;
6784 }
6785
6786 static int
6787 nl80211_parse_sched_scan_plans(struct wiphy *wiphy, int n_plans,
6788                                struct cfg80211_sched_scan_request *request,
6789                                struct nlattr **attrs)
6790 {
6791         int tmp, err, i = 0;
6792         struct nlattr *attr;
6793
6794         if (!attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
6795                 u32 interval;
6796
6797                 /*
6798                  * If scan plans are not specified,
6799                  * %NL80211_ATTR_SCHED_SCAN_INTERVAL will be specified. In this
6800                  * case one scan plan will be set with the specified scan
6801                  * interval and infinite number of iterations.
6802                  */
6803                 interval = nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
6804                 if (!interval)
6805                         return -EINVAL;
6806
6807                 request->scan_plans[0].interval =
6808                         DIV_ROUND_UP(interval, MSEC_PER_SEC);
6809                 if (!request->scan_plans[0].interval)
6810                         return -EINVAL;
6811
6812                 if (request->scan_plans[0].interval >
6813                     wiphy->max_sched_scan_plan_interval)
6814                         request->scan_plans[0].interval =
6815                                 wiphy->max_sched_scan_plan_interval;
6816
6817                 return 0;
6818         }
6819
6820         nla_for_each_nested(attr, attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp) {
6821                 struct nlattr *plan[NL80211_SCHED_SCAN_PLAN_MAX + 1];
6822
6823                 if (WARN_ON(i >= n_plans))
6824                         return -EINVAL;
6825
6826                 err = nla_parse_nested(plan, NL80211_SCHED_SCAN_PLAN_MAX,
6827                                        attr, nl80211_plan_policy);
6828                 if (err)
6829                         return err;
6830
6831                 if (!plan[NL80211_SCHED_SCAN_PLAN_INTERVAL])
6832                         return -EINVAL;
6833
6834                 request->scan_plans[i].interval =
6835                         nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_INTERVAL]);
6836                 if (!request->scan_plans[i].interval ||
6837                     request->scan_plans[i].interval >
6838                     wiphy->max_sched_scan_plan_interval)
6839                         return -EINVAL;
6840
6841                 if (plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]) {
6842                         request->scan_plans[i].iterations =
6843                                 nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]);
6844                         if (!request->scan_plans[i].iterations ||
6845                             (request->scan_plans[i].iterations >
6846                              wiphy->max_sched_scan_plan_iterations))
6847                                 return -EINVAL;
6848                 } else if (i < n_plans - 1) {
6849                         /*
6850                          * All scan plans but the last one must specify
6851                          * a finite number of iterations
6852                          */
6853                         return -EINVAL;
6854                 }
6855
6856                 i++;
6857         }
6858
6859         /*
6860          * The last scan plan must not specify the number of
6861          * iterations, it is supposed to run infinitely
6862          */
6863         if (request->scan_plans[n_plans - 1].iterations)
6864                 return  -EINVAL;
6865
6866         return 0;
6867 }
6868
6869 static struct cfg80211_sched_scan_request *
6870 nl80211_parse_sched_scan(struct wiphy *wiphy, struct wireless_dev *wdev,
6871                          struct nlattr **attrs)
6872 {
6873         struct cfg80211_sched_scan_request *request;
6874         struct nlattr *attr;
6875         int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i, n_plans = 0;
6876         enum nl80211_band band;
6877         size_t ie_len;
6878         struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
6879         s32 default_match_rssi = NL80211_SCAN_RSSI_THOLD_OFF;
6880
6881         if (!is_valid_ie_attr(attrs[NL80211_ATTR_IE]))
6882                 return ERR_PTR(-EINVAL);
6883
6884         if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
6885                 n_channels = validate_scan_freqs(
6886                                 attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
6887                 if (!n_channels)
6888                         return ERR_PTR(-EINVAL);
6889         } else {
6890                 n_channels = ieee80211_get_num_supported_channels(wiphy);
6891         }
6892
6893         if (attrs[NL80211_ATTR_SCAN_SSIDS])
6894                 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
6895                                     tmp)
6896                         n_ssids++;
6897
6898         if (n_ssids > wiphy->max_sched_scan_ssids)
6899                 return ERR_PTR(-EINVAL);
6900
6901         /*
6902          * First, count the number of 'real' matchsets. Due to an issue with
6903          * the old implementation, matchsets containing only the RSSI attribute
6904          * (NL80211_SCHED_SCAN_MATCH_ATTR_RSSI) are considered as the 'default'
6905          * RSSI for all matchsets, rather than their own matchset for reporting
6906          * all APs with a strong RSSI. This is needed to be compatible with
6907          * older userspace that treated a matchset with only the RSSI as the
6908          * global RSSI for all other matchsets - if there are other matchsets.
6909          */
6910         if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
6911                 nla_for_each_nested(attr,
6912                                     attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
6913                                     tmp) {
6914                         struct nlattr *rssi;
6915
6916                         err = nla_parse_nested(tb,
6917                                                NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
6918                                                attr, nl80211_match_policy);
6919                         if (err)
6920                                 return ERR_PTR(err);
6921                         /* add other standalone attributes here */
6922                         if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID]) {
6923                                 n_match_sets++;
6924                                 continue;
6925                         }
6926                         rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
6927                         if (rssi)
6928                                 default_match_rssi = nla_get_s32(rssi);
6929                 }
6930         }
6931
6932         /* However, if there's no other matchset, add the RSSI one */
6933         if (!n_match_sets && default_match_rssi != NL80211_SCAN_RSSI_THOLD_OFF)
6934                 n_match_sets = 1;
6935
6936         if (n_match_sets > wiphy->max_match_sets)
6937                 return ERR_PTR(-EINVAL);
6938
6939         if (attrs[NL80211_ATTR_IE])
6940                 ie_len = nla_len(attrs[NL80211_ATTR_IE]);
6941         else
6942                 ie_len = 0;
6943
6944         if (ie_len > wiphy->max_sched_scan_ie_len)
6945                 return ERR_PTR(-EINVAL);
6946
6947         if (attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
6948                 /*
6949                  * NL80211_ATTR_SCHED_SCAN_INTERVAL must not be specified since
6950                  * each scan plan already specifies its own interval
6951                  */
6952                 if (attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
6953                         return ERR_PTR(-EINVAL);
6954
6955                 nla_for_each_nested(attr,
6956                                     attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp)
6957                         n_plans++;
6958         } else {
6959                 /*
6960                  * The scan interval attribute is kept for backward
6961                  * compatibility. If no scan plans are specified and sched scan
6962                  * interval is specified, one scan plan will be set with this
6963                  * scan interval and infinite number of iterations.
6964                  */
6965                 if (!attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
6966                         return ERR_PTR(-EINVAL);
6967
6968                 n_plans = 1;
6969         }
6970
6971         if (!n_plans || n_plans > wiphy->max_sched_scan_plans)
6972                 return ERR_PTR(-EINVAL);
6973
6974         if (!wiphy_ext_feature_isset(
6975                     wiphy, NL80211_EXT_FEATURE_SCHED_SCAN_RELATIVE_RSSI) &&
6976             (attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI] ||
6977              attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]))
6978                 return ERR_PTR(-EINVAL);
6979
6980         request = kzalloc(sizeof(*request)
6981                         + sizeof(*request->ssids) * n_ssids
6982                         + sizeof(*request->match_sets) * n_match_sets
6983                         + sizeof(*request->scan_plans) * n_plans
6984                         + sizeof(*request->channels) * n_channels
6985                         + ie_len, GFP_KERNEL);
6986         if (!request)
6987                 return ERR_PTR(-ENOMEM);
6988
6989         if (n_ssids)
6990                 request->ssids = (void *)&request->channels[n_channels];
6991         request->n_ssids = n_ssids;
6992         if (ie_len) {
6993                 if (n_ssids)
6994                         request->ie = (void *)(request->ssids + n_ssids);
6995                 else
6996                         request->ie = (void *)(request->channels + n_channels);
6997         }
6998
6999         if (n_match_sets) {
7000                 if (request->ie)
7001                         request->match_sets = (void *)(request->ie + ie_len);
7002                 else if (n_ssids)
7003                         request->match_sets =
7004                                 (void *)(request->ssids + n_ssids);
7005                 else
7006                         request->match_sets =
7007                                 (void *)(request->channels + n_channels);
7008         }
7009         request->n_match_sets = n_match_sets;
7010
7011         if (n_match_sets)
7012                 request->scan_plans = (void *)(request->match_sets +
7013                                                n_match_sets);
7014         else if (request->ie)
7015                 request->scan_plans = (void *)(request->ie + ie_len);
7016         else if (n_ssids)
7017                 request->scan_plans = (void *)(request->ssids + n_ssids);
7018         else
7019                 request->scan_plans = (void *)(request->channels + n_channels);
7020
7021         request->n_scan_plans = n_plans;
7022
7023         i = 0;
7024         if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
7025                 /* user specified, bail out if channel not found */
7026                 nla_for_each_nested(attr,
7027                                     attrs[NL80211_ATTR_SCAN_FREQUENCIES],
7028                                     tmp) {
7029                         struct ieee80211_channel *chan;
7030
7031                         chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
7032
7033                         if (!chan) {
7034                                 err = -EINVAL;
7035                                 goto out_free;
7036                         }
7037
7038                         /* ignore disabled channels */
7039                         if (chan->flags & IEEE80211_CHAN_DISABLED)
7040                                 continue;
7041
7042                         request->channels[i] = chan;
7043                         i++;
7044                 }
7045         } else {
7046                 /* all channels */
7047                 for (band = 0; band < NUM_NL80211_BANDS; band++) {
7048                         int j;
7049
7050                         if (!wiphy->bands[band])
7051                                 continue;
7052                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
7053                                 struct ieee80211_channel *chan;
7054
7055                                 chan = &wiphy->bands[band]->channels[j];
7056
7057                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
7058                                         continue;
7059
7060                                 request->channels[i] = chan;
7061                                 i++;
7062                         }
7063                 }
7064         }
7065
7066         if (!i) {
7067                 err = -EINVAL;
7068                 goto out_free;
7069         }
7070
7071         request->n_channels = i;
7072
7073         i = 0;
7074         if (n_ssids) {
7075                 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
7076                                     tmp) {
7077                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
7078                                 err = -EINVAL;
7079                                 goto out_free;
7080                         }
7081                         request->ssids[i].ssid_len = nla_len(attr);
7082                         memcpy(request->ssids[i].ssid, nla_data(attr),
7083                                nla_len(attr));
7084                         i++;
7085                 }
7086         }
7087
7088         i = 0;
7089         if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
7090                 nla_for_each_nested(attr,
7091                                     attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
7092                                     tmp) {
7093                         struct nlattr *ssid, *rssi;
7094
7095                         err = nla_parse_nested(tb,
7096                                                NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
7097                                                attr, nl80211_match_policy);
7098                         if (err)
7099                                 goto out_free;
7100                         ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID];
7101                         if (ssid) {
7102                                 if (WARN_ON(i >= n_match_sets)) {
7103                                         /* this indicates a programming error,
7104                                          * the loop above should have verified
7105                                          * things properly
7106                                          */
7107                                         err = -EINVAL;
7108                                         goto out_free;
7109                                 }
7110
7111                                 if (nla_len(ssid) > IEEE80211_MAX_SSID_LEN) {
7112                                         err = -EINVAL;
7113                                         goto out_free;
7114                                 }
7115                                 memcpy(request->match_sets[i].ssid.ssid,
7116                                        nla_data(ssid), nla_len(ssid));
7117                                 request->match_sets[i].ssid.ssid_len =
7118                                         nla_len(ssid);
7119                                 /* special attribute - old implementation w/a */
7120                                 request->match_sets[i].rssi_thold =
7121                                         default_match_rssi;
7122                                 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
7123                                 if (rssi)
7124                                         request->match_sets[i].rssi_thold =
7125                                                 nla_get_s32(rssi);
7126                         }
7127                         i++;
7128                 }
7129
7130                 /* there was no other matchset, so the RSSI one is alone */
7131                 if (i == 0 && n_match_sets)
7132                         request->match_sets[0].rssi_thold = default_match_rssi;
7133
7134                 request->min_rssi_thold = INT_MAX;
7135                 for (i = 0; i < n_match_sets; i++)
7136                         request->min_rssi_thold =
7137                                 min(request->match_sets[i].rssi_thold,
7138                                     request->min_rssi_thold);
7139         } else {
7140                 request->min_rssi_thold = NL80211_SCAN_RSSI_THOLD_OFF;
7141         }
7142
7143         if (ie_len) {
7144                 request->ie_len = ie_len;
7145                 memcpy((void *)request->ie,
7146                        nla_data(attrs[NL80211_ATTR_IE]),
7147                        request->ie_len);
7148         }
7149
7150         if (attrs[NL80211_ATTR_SCAN_FLAGS]) {
7151                 request->flags = nla_get_u32(
7152                         attrs[NL80211_ATTR_SCAN_FLAGS]);
7153                 if ((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
7154                     !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) {
7155                         err = -EOPNOTSUPP;
7156                         goto out_free;
7157                 }
7158
7159                 if (request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
7160                         u32 flg = NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR;
7161
7162                         if (!wdev) /* must be net-detect */
7163                                 flg = NL80211_FEATURE_ND_RANDOM_MAC_ADDR;
7164
7165                         if (!(wiphy->features & flg)) {
7166                                 err = -EOPNOTSUPP;
7167                                 goto out_free;
7168                         }
7169
7170                         if (wdev && wdev->current_bss) {
7171                                 err = -EOPNOTSUPP;
7172                                 goto out_free;
7173                         }
7174
7175                         err = nl80211_parse_random_mac(attrs, request->mac_addr,
7176                                                        request->mac_addr_mask);
7177                         if (err)
7178                                 goto out_free;
7179                 }
7180         }
7181
7182         if (attrs[NL80211_ATTR_SCHED_SCAN_DELAY])
7183                 request->delay =
7184                         nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_DELAY]);
7185
7186         if (attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI]) {
7187                 request->relative_rssi = nla_get_s8(
7188                         attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI]);
7189                 request->relative_rssi_set = true;
7190         }
7191
7192         if (request->relative_rssi_set &&
7193             attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]) {
7194                 struct nl80211_bss_select_rssi_adjust *rssi_adjust;
7195
7196                 rssi_adjust = nla_data(
7197                         attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]);
7198                 request->rssi_adjust.band = rssi_adjust->band;
7199                 request->rssi_adjust.delta = rssi_adjust->delta;
7200                 if (!is_band_valid(wiphy, request->rssi_adjust.band)) {
7201                         err = -EINVAL;
7202                         goto out_free;
7203                 }
7204         }
7205
7206         err = nl80211_parse_sched_scan_plans(wiphy, n_plans, request, attrs);
7207         if (err)
7208                 goto out_free;
7209
7210         request->scan_start = jiffies;
7211
7212         return request;
7213
7214 out_free:
7215         kfree(request);
7216         return ERR_PTR(err);
7217 }
7218
7219 static int nl80211_start_sched_scan(struct sk_buff *skb,
7220                                     struct genl_info *info)
7221 {
7222         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7223         struct net_device *dev = info->user_ptr[1];
7224         struct wireless_dev *wdev = dev->ieee80211_ptr;
7225         struct cfg80211_sched_scan_request *sched_scan_req;
7226         int err;
7227
7228         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
7229             !rdev->ops->sched_scan_start)
7230                 return -EOPNOTSUPP;
7231
7232         if (rdev->sched_scan_req)
7233                 return -EINPROGRESS;
7234
7235         sched_scan_req = nl80211_parse_sched_scan(&rdev->wiphy, wdev,
7236                                                   info->attrs);
7237
7238         err = PTR_ERR_OR_ZERO(sched_scan_req);
7239         if (err)
7240                 goto out_err;
7241
7242         err = rdev_sched_scan_start(rdev, dev, sched_scan_req);
7243         if (err)
7244                 goto out_free;
7245
7246         sched_scan_req->dev = dev;
7247         sched_scan_req->wiphy = &rdev->wiphy;
7248
7249         if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
7250                 sched_scan_req->owner_nlportid = info->snd_portid;
7251
7252         rcu_assign_pointer(rdev->sched_scan_req, sched_scan_req);
7253
7254         nl80211_send_sched_scan(rdev, dev,
7255                                 NL80211_CMD_START_SCHED_SCAN);
7256         return 0;
7257
7258 out_free:
7259         kfree(sched_scan_req);
7260 out_err:
7261         return err;
7262 }
7263
7264 static int nl80211_stop_sched_scan(struct sk_buff *skb,
7265                                    struct genl_info *info)
7266 {
7267         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7268
7269         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
7270             !rdev->ops->sched_scan_stop)
7271                 return -EOPNOTSUPP;
7272
7273         return __cfg80211_stop_sched_scan(rdev, false);
7274 }
7275
7276 static int nl80211_start_radar_detection(struct sk_buff *skb,
7277                                          struct genl_info *info)
7278 {
7279         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7280         struct net_device *dev = info->user_ptr[1];
7281         struct wireless_dev *wdev = dev->ieee80211_ptr;
7282         struct cfg80211_chan_def chandef;
7283         enum nl80211_dfs_regions dfs_region;
7284         unsigned int cac_time_ms;
7285         int err;
7286
7287         dfs_region = reg_get_dfs_region(wdev->wiphy);
7288         if (dfs_region == NL80211_DFS_UNSET)
7289                 return -EINVAL;
7290
7291         err = nl80211_parse_chandef(rdev, info, &chandef);
7292         if (err)
7293                 return err;
7294
7295         if (netif_carrier_ok(dev))
7296                 return -EBUSY;
7297
7298         if (wdev->cac_started)
7299                 return -EBUSY;
7300
7301         err = cfg80211_chandef_dfs_required(wdev->wiphy, &chandef,
7302                                             wdev->iftype);
7303         if (err < 0)
7304                 return err;
7305
7306         if (err == 0)
7307                 return -EINVAL;
7308
7309         if (!cfg80211_chandef_dfs_usable(wdev->wiphy, &chandef))
7310                 return -EINVAL;
7311
7312         if (!rdev->ops->start_radar_detection)
7313                 return -EOPNOTSUPP;
7314
7315         cac_time_ms = cfg80211_chandef_dfs_cac_time(&rdev->wiphy, &chandef);
7316         if (WARN_ON(!cac_time_ms))
7317                 cac_time_ms = IEEE80211_DFS_MIN_CAC_TIME_MS;
7318
7319         err = rdev_start_radar_detection(rdev, dev, &chandef, cac_time_ms);
7320         if (!err) {
7321                 wdev->chandef = chandef;
7322                 wdev->cac_started = true;
7323                 wdev->cac_start_time = jiffies;
7324                 wdev->cac_time_ms = cac_time_ms;
7325         }
7326         return err;
7327 }
7328
7329 static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info)
7330 {
7331         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7332         struct net_device *dev = info->user_ptr[1];
7333         struct wireless_dev *wdev = dev->ieee80211_ptr;
7334         struct cfg80211_csa_settings params;
7335         /* csa_attrs is defined static to avoid waste of stack size - this
7336          * function is called under RTNL lock, so this should not be a problem.
7337          */
7338         static struct nlattr *csa_attrs[NL80211_ATTR_MAX+1];
7339         int err;
7340         bool need_new_beacon = false;
7341         int len, i;
7342         u32 cs_count;
7343
7344         if (!rdev->ops->channel_switch ||
7345             !(rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH))
7346                 return -EOPNOTSUPP;
7347
7348         switch (dev->ieee80211_ptr->iftype) {
7349         case NL80211_IFTYPE_AP:
7350         case NL80211_IFTYPE_P2P_GO:
7351                 need_new_beacon = true;
7352
7353                 /* useless if AP is not running */
7354                 if (!wdev->beacon_interval)
7355                         return -ENOTCONN;
7356                 break;
7357         case NL80211_IFTYPE_ADHOC:
7358                 if (!wdev->ssid_len)
7359                         return -ENOTCONN;
7360                 break;
7361         case NL80211_IFTYPE_MESH_POINT:
7362                 if (!wdev->mesh_id_len)
7363                         return -ENOTCONN;
7364                 break;
7365         default:
7366                 return -EOPNOTSUPP;
7367         }
7368
7369         memset(&params, 0, sizeof(params));
7370
7371         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
7372             !info->attrs[NL80211_ATTR_CH_SWITCH_COUNT])
7373                 return -EINVAL;
7374
7375         /* only important for AP, IBSS and mesh create IEs internally */
7376         if (need_new_beacon && !info->attrs[NL80211_ATTR_CSA_IES])
7377                 return -EINVAL;
7378
7379         /* Even though the attribute is u32, the specification says
7380          * u8, so let's make sure we don't overflow.
7381          */
7382         cs_count = nla_get_u32(info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]);
7383         if (cs_count > 255)
7384                 return -EINVAL;
7385
7386         params.count = cs_count;
7387
7388         if (!need_new_beacon)
7389                 goto skip_beacons;
7390
7391         err = nl80211_parse_beacon(info->attrs, &params.beacon_after);
7392         if (err)
7393                 return err;
7394
7395         err = nla_parse_nested(csa_attrs, NL80211_ATTR_MAX,
7396                                info->attrs[NL80211_ATTR_CSA_IES],
7397                                nl80211_policy);
7398         if (err)
7399                 return err;
7400
7401         err = nl80211_parse_beacon(csa_attrs, &params.beacon_csa);
7402         if (err)
7403                 return err;
7404
7405         if (!csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON])
7406                 return -EINVAL;
7407
7408         len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
7409         if (!len || (len % sizeof(u16)))
7410                 return -EINVAL;
7411
7412         params.n_counter_offsets_beacon = len / sizeof(u16);
7413         if (rdev->wiphy.max_num_csa_counters &&
7414             (params.n_counter_offsets_beacon >
7415              rdev->wiphy.max_num_csa_counters))
7416                 return -EINVAL;
7417
7418         params.counter_offsets_beacon =
7419                 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
7420
7421         /* sanity checks - counters should fit and be the same */
7422         for (i = 0; i < params.n_counter_offsets_beacon; i++) {
7423                 u16 offset = params.counter_offsets_beacon[i];
7424
7425                 if (offset >= params.beacon_csa.tail_len)
7426                         return -EINVAL;
7427
7428                 if (params.beacon_csa.tail[offset] != params.count)
7429                         return -EINVAL;
7430         }
7431
7432         if (csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]) {
7433                 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
7434                 if (!len || (len % sizeof(u16)))
7435                         return -EINVAL;
7436
7437                 params.n_counter_offsets_presp = len / sizeof(u16);
7438                 if (rdev->wiphy.max_num_csa_counters &&
7439                     (params.n_counter_offsets_presp >
7440                      rdev->wiphy.max_num_csa_counters))
7441                         return -EINVAL;
7442
7443                 params.counter_offsets_presp =
7444                         nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
7445
7446                 /* sanity checks - counters should fit and be the same */
7447                 for (i = 0; i < params.n_counter_offsets_presp; i++) {
7448                         u16 offset = params.counter_offsets_presp[i];
7449
7450                         if (offset >= params.beacon_csa.probe_resp_len)
7451                                 return -EINVAL;
7452
7453                         if (params.beacon_csa.probe_resp[offset] !=
7454                             params.count)
7455                                 return -EINVAL;
7456                 }
7457         }
7458
7459 skip_beacons:
7460         err = nl80211_parse_chandef(rdev, info, &params.chandef);
7461         if (err)
7462                 return err;
7463
7464         if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params.chandef,
7465                                            wdev->iftype))
7466                 return -EINVAL;
7467
7468         err = cfg80211_chandef_dfs_required(wdev->wiphy,
7469                                             &params.chandef,
7470                                             wdev->iftype);
7471         if (err < 0)
7472                 return err;
7473
7474         if (err > 0)
7475                 params.radar_required = true;
7476
7477         if (info->attrs[NL80211_ATTR_CH_SWITCH_BLOCK_TX])
7478                 params.block_tx = true;
7479
7480         wdev_lock(wdev);
7481         err = rdev_channel_switch(rdev, dev, &params);
7482         wdev_unlock(wdev);
7483
7484         return err;
7485 }
7486
7487 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
7488                             u32 seq, int flags,
7489                             struct cfg80211_registered_device *rdev,
7490                             struct wireless_dev *wdev,
7491                             struct cfg80211_internal_bss *intbss)
7492 {
7493         struct cfg80211_bss *res = &intbss->pub;
7494         const struct cfg80211_bss_ies *ies;
7495         void *hdr;
7496         struct nlattr *bss;
7497
7498         ASSERT_WDEV_LOCK(wdev);
7499
7500         hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
7501                              NL80211_CMD_NEW_SCAN_RESULTS);
7502         if (!hdr)
7503                 return -1;
7504
7505         genl_dump_check_consistent(cb, hdr, &nl80211_fam);
7506
7507         if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation))
7508                 goto nla_put_failure;
7509         if (wdev->netdev &&
7510             nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex))
7511                 goto nla_put_failure;
7512         if (nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
7513                               NL80211_ATTR_PAD))
7514                 goto nla_put_failure;
7515
7516         bss = nla_nest_start(msg, NL80211_ATTR_BSS);
7517         if (!bss)
7518                 goto nla_put_failure;
7519         if ((!is_zero_ether_addr(res->bssid) &&
7520              nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid)))
7521                 goto nla_put_failure;
7522
7523         rcu_read_lock();
7524         /* indicate whether we have probe response data or not */
7525         if (rcu_access_pointer(res->proberesp_ies) &&
7526             nla_put_flag(msg, NL80211_BSS_PRESP_DATA))
7527                 goto fail_unlock_rcu;
7528
7529         /* this pointer prefers to be pointed to probe response data
7530          * but is always valid
7531          */
7532         ies = rcu_dereference(res->ies);
7533         if (ies) {
7534                 if (nla_put_u64_64bit(msg, NL80211_BSS_TSF, ies->tsf,
7535                                       NL80211_BSS_PAD))
7536                         goto fail_unlock_rcu;
7537                 if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS,
7538                                         ies->len, ies->data))
7539                         goto fail_unlock_rcu;
7540         }
7541
7542         /* and this pointer is always (unless driver didn't know) beacon data */
7543         ies = rcu_dereference(res->beacon_ies);
7544         if (ies && ies->from_beacon) {
7545                 if (nla_put_u64_64bit(msg, NL80211_BSS_BEACON_TSF, ies->tsf,
7546                                       NL80211_BSS_PAD))
7547                         goto fail_unlock_rcu;
7548                 if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES,
7549                                         ies->len, ies->data))
7550                         goto fail_unlock_rcu;
7551         }
7552         rcu_read_unlock();
7553
7554         if (res->beacon_interval &&
7555             nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval))
7556                 goto nla_put_failure;
7557         if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) ||
7558             nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) ||
7559             nla_put_u32(msg, NL80211_BSS_CHAN_WIDTH, res->scan_width) ||
7560             nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO,
7561                         jiffies_to_msecs(jiffies - intbss->ts)))
7562                 goto nla_put_failure;
7563
7564         if (intbss->parent_tsf &&
7565             (nla_put_u64_64bit(msg, NL80211_BSS_PARENT_TSF,
7566                                intbss->parent_tsf, NL80211_BSS_PAD) ||
7567              nla_put(msg, NL80211_BSS_PARENT_BSSID, ETH_ALEN,
7568                      intbss->parent_bssid)))
7569                 goto nla_put_failure;
7570
7571         if (intbss->ts_boottime &&
7572             nla_put_u64_64bit(msg, NL80211_BSS_LAST_SEEN_BOOTTIME,
7573                               intbss->ts_boottime, NL80211_BSS_PAD))
7574                 goto nla_put_failure;
7575
7576         switch (rdev->wiphy.signal_type) {
7577         case CFG80211_SIGNAL_TYPE_MBM:
7578                 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal))
7579                         goto nla_put_failure;
7580                 break;
7581         case CFG80211_SIGNAL_TYPE_UNSPEC:
7582                 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal))
7583                         goto nla_put_failure;
7584                 break;
7585         default:
7586                 break;
7587         }
7588
7589         switch (wdev->iftype) {
7590         case NL80211_IFTYPE_P2P_CLIENT:
7591         case NL80211_IFTYPE_STATION:
7592                 if (intbss == wdev->current_bss &&
7593                     nla_put_u32(msg, NL80211_BSS_STATUS,
7594                                 NL80211_BSS_STATUS_ASSOCIATED))
7595                         goto nla_put_failure;
7596                 break;
7597         case NL80211_IFTYPE_ADHOC:
7598                 if (intbss == wdev->current_bss &&
7599                     nla_put_u32(msg, NL80211_BSS_STATUS,
7600                                 NL80211_BSS_STATUS_IBSS_JOINED))
7601                         goto nla_put_failure;
7602                 break;
7603         default:
7604                 break;
7605         }
7606
7607         nla_nest_end(msg, bss);
7608
7609         genlmsg_end(msg, hdr);
7610         return 0;
7611
7612  fail_unlock_rcu:
7613         rcu_read_unlock();
7614  nla_put_failure:
7615         genlmsg_cancel(msg, hdr);
7616         return -EMSGSIZE;
7617 }
7618
7619 static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb)
7620 {
7621         struct cfg80211_registered_device *rdev;
7622         struct cfg80211_internal_bss *scan;
7623         struct wireless_dev *wdev;
7624         int start = cb->args[2], idx = 0;
7625         int err;
7626
7627         err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
7628         if (err)
7629                 return err;
7630
7631         wdev_lock(wdev);
7632         spin_lock_bh(&rdev->bss_lock);
7633         cfg80211_bss_expire(rdev);
7634
7635         cb->seq = rdev->bss_generation;
7636
7637         list_for_each_entry(scan, &rdev->bss_list, list) {
7638                 if (++idx <= start)
7639                         continue;
7640                 if (nl80211_send_bss(skb, cb,
7641                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
7642                                 rdev, wdev, scan) < 0) {
7643                         idx--;
7644                         break;
7645                 }
7646         }
7647
7648         spin_unlock_bh(&rdev->bss_lock);
7649         wdev_unlock(wdev);
7650
7651         cb->args[2] = idx;
7652         nl80211_finish_wdev_dump(rdev);
7653
7654         return skb->len;
7655 }
7656
7657 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq,
7658                                int flags, struct net_device *dev,
7659                                bool allow_radio_stats,
7660                                struct survey_info *survey)
7661 {
7662         void *hdr;
7663         struct nlattr *infoattr;
7664
7665         /* skip radio stats if userspace didn't request them */
7666         if (!survey->channel && !allow_radio_stats)
7667                 return 0;
7668
7669         hdr = nl80211hdr_put(msg, portid, seq, flags,
7670                              NL80211_CMD_NEW_SURVEY_RESULTS);
7671         if (!hdr)
7672                 return -ENOMEM;
7673
7674         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
7675                 goto nla_put_failure;
7676
7677         infoattr = nla_nest_start(msg, NL80211_ATTR_SURVEY_INFO);
7678         if (!infoattr)
7679                 goto nla_put_failure;
7680
7681         if (survey->channel &&
7682             nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY,
7683                         survey->channel->center_freq))
7684                 goto nla_put_failure;
7685
7686         if ((survey->filled & SURVEY_INFO_NOISE_DBM) &&
7687             nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise))
7688                 goto nla_put_failure;
7689         if ((survey->filled & SURVEY_INFO_IN_USE) &&
7690             nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE))
7691                 goto nla_put_failure;
7692         if ((survey->filled & SURVEY_INFO_TIME) &&
7693             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME,
7694                         survey->time, NL80211_SURVEY_INFO_PAD))
7695                 goto nla_put_failure;
7696         if ((survey->filled & SURVEY_INFO_TIME_BUSY) &&
7697             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_BUSY,
7698                               survey->time_busy, NL80211_SURVEY_INFO_PAD))
7699                 goto nla_put_failure;
7700         if ((survey->filled & SURVEY_INFO_TIME_EXT_BUSY) &&
7701             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_EXT_BUSY,
7702                               survey->time_ext_busy, NL80211_SURVEY_INFO_PAD))
7703                 goto nla_put_failure;
7704         if ((survey->filled & SURVEY_INFO_TIME_RX) &&
7705             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_RX,
7706                               survey->time_rx, NL80211_SURVEY_INFO_PAD))
7707                 goto nla_put_failure;
7708         if ((survey->filled & SURVEY_INFO_TIME_TX) &&
7709             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_TX,
7710                               survey->time_tx, NL80211_SURVEY_INFO_PAD))
7711                 goto nla_put_failure;
7712         if ((survey->filled & SURVEY_INFO_TIME_SCAN) &&
7713             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_SCAN,
7714                               survey->time_scan, NL80211_SURVEY_INFO_PAD))
7715                 goto nla_put_failure;
7716
7717         nla_nest_end(msg, infoattr);
7718
7719         genlmsg_end(msg, hdr);
7720         return 0;
7721
7722  nla_put_failure:
7723         genlmsg_cancel(msg, hdr);
7724         return -EMSGSIZE;
7725 }
7726
7727 static int nl80211_dump_survey(struct sk_buff *skb, struct netlink_callback *cb)
7728 {
7729         struct nlattr **attrbuf = genl_family_attrbuf(&nl80211_fam);
7730         struct survey_info survey;
7731         struct cfg80211_registered_device *rdev;
7732         struct wireless_dev *wdev;
7733         int survey_idx = cb->args[2];
7734         int res;
7735         bool radio_stats;
7736
7737         res = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
7738         if (res)
7739                 return res;
7740
7741         /* prepare_wdev_dump parsed the attributes */
7742         radio_stats = attrbuf[NL80211_ATTR_SURVEY_RADIO_STATS];
7743
7744         if (!wdev->netdev) {
7745                 res = -EINVAL;
7746                 goto out_err;
7747         }
7748
7749         if (!rdev->ops->dump_survey) {
7750                 res = -EOPNOTSUPP;
7751                 goto out_err;
7752         }
7753
7754         while (1) {
7755                 res = rdev_dump_survey(rdev, wdev->netdev, survey_idx, &survey);
7756                 if (res == -ENOENT)
7757                         break;
7758                 if (res)
7759                         goto out_err;
7760
7761                 /* don't send disabled channels, but do send non-channel data */
7762                 if (survey.channel &&
7763                     survey.channel->flags & IEEE80211_CHAN_DISABLED) {
7764                         survey_idx++;
7765                         continue;
7766                 }
7767
7768                 if (nl80211_send_survey(skb,
7769                                 NETLINK_CB(cb->skb).portid,
7770                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
7771                                 wdev->netdev, radio_stats, &survey) < 0)
7772                         goto out;
7773                 survey_idx++;
7774         }
7775
7776  out:
7777         cb->args[2] = survey_idx;
7778         res = skb->len;
7779  out_err:
7780         nl80211_finish_wdev_dump(rdev);
7781         return res;
7782 }
7783
7784 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
7785 {
7786         return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
7787                                   NL80211_WPA_VERSION_2));
7788 }
7789
7790 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
7791 {
7792         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7793         struct net_device *dev = info->user_ptr[1];
7794         struct ieee80211_channel *chan;
7795         const u8 *bssid, *ssid, *ie = NULL, *auth_data = NULL;
7796         int err, ssid_len, ie_len = 0, auth_data_len = 0;
7797         enum nl80211_auth_type auth_type;
7798         struct key_parse key;
7799         bool local_state_change;
7800
7801         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7802                 return -EINVAL;
7803
7804         if (!info->attrs[NL80211_ATTR_MAC])
7805                 return -EINVAL;
7806
7807         if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
7808                 return -EINVAL;
7809
7810         if (!info->attrs[NL80211_ATTR_SSID])
7811                 return -EINVAL;
7812
7813         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
7814                 return -EINVAL;
7815
7816         err = nl80211_parse_key(info, &key);
7817         if (err)
7818                 return err;
7819
7820         if (key.idx >= 0) {
7821                 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
7822                         return -EINVAL;
7823                 if (!key.p.key || !key.p.key_len)
7824                         return -EINVAL;
7825                 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
7826                      key.p.key_len != WLAN_KEY_LEN_WEP40) &&
7827                     (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
7828                      key.p.key_len != WLAN_KEY_LEN_WEP104))
7829                         return -EINVAL;
7830                 if (key.idx > 3)
7831                         return -EINVAL;
7832         } else {
7833                 key.p.key_len = 0;
7834                 key.p.key = NULL;
7835         }
7836
7837         if (key.idx >= 0) {
7838                 int i;
7839                 bool ok = false;
7840
7841                 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
7842                         if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
7843                                 ok = true;
7844                                 break;
7845                         }
7846                 }
7847                 if (!ok)
7848                         return -EINVAL;
7849         }
7850
7851         if (!rdev->ops->auth)
7852                 return -EOPNOTSUPP;
7853
7854         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7855             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7856                 return -EOPNOTSUPP;
7857
7858         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7859         chan = nl80211_get_valid_chan(&rdev->wiphy,
7860                                       info->attrs[NL80211_ATTR_WIPHY_FREQ]);
7861         if (!chan)
7862                 return -EINVAL;
7863
7864         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
7865         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
7866
7867         if (info->attrs[NL80211_ATTR_IE]) {
7868                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7869                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7870         }
7871
7872         auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
7873         if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE))
7874                 return -EINVAL;
7875
7876         if ((auth_type == NL80211_AUTHTYPE_SAE ||
7877              auth_type == NL80211_AUTHTYPE_FILS_SK ||
7878              auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
7879              auth_type == NL80211_AUTHTYPE_FILS_PK) &&
7880             !info->attrs[NL80211_ATTR_AUTH_DATA])
7881                 return -EINVAL;
7882
7883         if (info->attrs[NL80211_ATTR_AUTH_DATA]) {
7884                 if (auth_type != NL80211_AUTHTYPE_SAE &&
7885                     auth_type != NL80211_AUTHTYPE_FILS_SK &&
7886                     auth_type != NL80211_AUTHTYPE_FILS_SK_PFS &&
7887                     auth_type != NL80211_AUTHTYPE_FILS_PK)
7888                         return -EINVAL;
7889                 auth_data = nla_data(info->attrs[NL80211_ATTR_AUTH_DATA]);
7890                 auth_data_len = nla_len(info->attrs[NL80211_ATTR_AUTH_DATA]);
7891                 /* need to include at least Auth Transaction and Status Code */
7892                 if (auth_data_len < 4)
7893                         return -EINVAL;
7894         }
7895
7896         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
7897
7898         /*
7899          * Since we no longer track auth state, ignore
7900          * requests to only change local state.
7901          */
7902         if (local_state_change)
7903                 return 0;
7904
7905         wdev_lock(dev->ieee80211_ptr);
7906         err = cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
7907                                  ssid, ssid_len, ie, ie_len,
7908                                  key.p.key, key.p.key_len, key.idx,
7909                                  auth_data, auth_data_len);
7910         wdev_unlock(dev->ieee80211_ptr);
7911         return err;
7912 }
7913
7914 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
7915                                    struct genl_info *info,
7916                                    struct cfg80211_crypto_settings *settings,
7917                                    int cipher_limit)
7918 {
7919         memset(settings, 0, sizeof(*settings));
7920
7921         settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
7922
7923         if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
7924                 u16 proto;
7925
7926                 proto = nla_get_u16(
7927                         info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
7928                 settings->control_port_ethertype = cpu_to_be16(proto);
7929                 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
7930                     proto != ETH_P_PAE)
7931                         return -EINVAL;
7932                 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
7933                         settings->control_port_no_encrypt = true;
7934         } else
7935                 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
7936
7937         if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
7938                 void *data;
7939                 int len, i;
7940
7941                 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
7942                 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
7943                 settings->n_ciphers_pairwise = len / sizeof(u32);
7944
7945                 if (len % sizeof(u32))
7946                         return -EINVAL;
7947
7948                 if (settings->n_ciphers_pairwise > cipher_limit)
7949                         return -EINVAL;
7950
7951                 memcpy(settings->ciphers_pairwise, data, len);
7952
7953                 for (i = 0; i < settings->n_ciphers_pairwise; i++)
7954                         if (!cfg80211_supported_cipher_suite(
7955                                         &rdev->wiphy,
7956                                         settings->ciphers_pairwise[i]))
7957                                 return -EINVAL;
7958         }
7959
7960         if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
7961                 settings->cipher_group =
7962                         nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
7963                 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
7964                                                      settings->cipher_group))
7965                         return -EINVAL;
7966         }
7967
7968         if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
7969                 settings->wpa_versions =
7970                         nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
7971                 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
7972                         return -EINVAL;
7973         }
7974
7975         if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
7976                 void *data;
7977                 int len;
7978
7979                 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
7980                 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
7981                 settings->n_akm_suites = len / sizeof(u32);
7982
7983                 if (len % sizeof(u32))
7984                         return -EINVAL;
7985
7986                 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES)
7987                         return -EINVAL;
7988
7989                 memcpy(settings->akm_suites, data, len);
7990         }
7991
7992         return 0;
7993 }
7994
7995 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
7996 {
7997         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7998         struct net_device *dev = info->user_ptr[1];
7999         struct ieee80211_channel *chan;
8000         struct cfg80211_assoc_request req = {};
8001         const u8 *bssid, *ssid;
8002         int err, ssid_len = 0;
8003
8004         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8005                 return -EINVAL;
8006
8007         if (!info->attrs[NL80211_ATTR_MAC] ||
8008             !info->attrs[NL80211_ATTR_SSID] ||
8009             !info->attrs[NL80211_ATTR_WIPHY_FREQ])
8010                 return -EINVAL;
8011
8012         if (!rdev->ops->assoc)
8013                 return -EOPNOTSUPP;
8014
8015         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8016             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8017                 return -EOPNOTSUPP;
8018
8019         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8020
8021         chan = nl80211_get_valid_chan(&rdev->wiphy,
8022                                       info->attrs[NL80211_ATTR_WIPHY_FREQ]);
8023         if (!chan)
8024                 return -EINVAL;
8025
8026         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
8027         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
8028
8029         if (info->attrs[NL80211_ATTR_IE]) {
8030                 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8031                 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8032         }
8033
8034         if (info->attrs[NL80211_ATTR_USE_MFP]) {
8035                 enum nl80211_mfp mfp =
8036                         nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
8037                 if (mfp == NL80211_MFP_REQUIRED)
8038                         req.use_mfp = true;
8039                 else if (mfp != NL80211_MFP_NO)
8040                         return -EINVAL;
8041         }
8042
8043         if (info->attrs[NL80211_ATTR_PREV_BSSID])
8044                 req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
8045
8046         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
8047                 req.flags |= ASSOC_REQ_DISABLE_HT;
8048
8049         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
8050                 memcpy(&req.ht_capa_mask,
8051                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
8052                        sizeof(req.ht_capa_mask));
8053
8054         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
8055                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
8056                         return -EINVAL;
8057                 memcpy(&req.ht_capa,
8058                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
8059                        sizeof(req.ht_capa));
8060         }
8061
8062         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
8063                 req.flags |= ASSOC_REQ_DISABLE_VHT;
8064
8065         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
8066                 memcpy(&req.vht_capa_mask,
8067                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
8068                        sizeof(req.vht_capa_mask));
8069
8070         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
8071                 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
8072                         return -EINVAL;
8073                 memcpy(&req.vht_capa,
8074                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
8075                        sizeof(req.vht_capa));
8076         }
8077
8078         if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
8079                 if (!((rdev->wiphy.features &
8080                         NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
8081                        (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
8082                     !wiphy_ext_feature_isset(&rdev->wiphy,
8083                                              NL80211_EXT_FEATURE_RRM))
8084                         return -EINVAL;
8085                 req.flags |= ASSOC_REQ_USE_RRM;
8086         }
8087
8088         if (info->attrs[NL80211_ATTR_FILS_KEK]) {
8089                 req.fils_kek = nla_data(info->attrs[NL80211_ATTR_FILS_KEK]);
8090                 req.fils_kek_len = nla_len(info->attrs[NL80211_ATTR_FILS_KEK]);
8091                 if (!info->attrs[NL80211_ATTR_FILS_NONCES])
8092                         return -EINVAL;
8093                 req.fils_nonces =
8094                         nla_data(info->attrs[NL80211_ATTR_FILS_NONCES]);
8095         }
8096
8097         err = nl80211_crypto_settings(rdev, info, &req.crypto, 1);
8098         if (!err) {
8099                 wdev_lock(dev->ieee80211_ptr);
8100
8101                 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid,
8102                                           ssid, ssid_len, &req);
8103
8104                 if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
8105                         dev->ieee80211_ptr->conn_owner_nlportid =
8106                                 info->snd_portid;
8107                         memcpy(dev->ieee80211_ptr->disconnect_bssid,
8108                                bssid, ETH_ALEN);
8109                 }
8110
8111                 wdev_unlock(dev->ieee80211_ptr);
8112         }
8113
8114         return err;
8115 }
8116
8117 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
8118 {
8119         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8120         struct net_device *dev = info->user_ptr[1];
8121         const u8 *ie = NULL, *bssid;
8122         int ie_len = 0, err;
8123         u16 reason_code;
8124         bool local_state_change;
8125
8126         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8127                 return -EINVAL;
8128
8129         if (!info->attrs[NL80211_ATTR_MAC])
8130                 return -EINVAL;
8131
8132         if (!info->attrs[NL80211_ATTR_REASON_CODE])
8133                 return -EINVAL;
8134
8135         if (!rdev->ops->deauth)
8136                 return -EOPNOTSUPP;
8137
8138         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8139             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8140                 return -EOPNOTSUPP;
8141
8142         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8143
8144         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
8145         if (reason_code == 0) {
8146                 /* Reason Code 0 is reserved */
8147                 return -EINVAL;
8148         }
8149
8150         if (info->attrs[NL80211_ATTR_IE]) {
8151                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8152                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8153         }
8154
8155         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
8156
8157         wdev_lock(dev->ieee80211_ptr);
8158         err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
8159                                    local_state_change);
8160         wdev_unlock(dev->ieee80211_ptr);
8161         return err;
8162 }
8163
8164 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
8165 {
8166         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8167         struct net_device *dev = info->user_ptr[1];
8168         const u8 *ie = NULL, *bssid;
8169         int ie_len = 0, err;
8170         u16 reason_code;
8171         bool local_state_change;
8172
8173         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8174                 return -EINVAL;
8175
8176         if (!info->attrs[NL80211_ATTR_MAC])
8177                 return -EINVAL;
8178
8179         if (!info->attrs[NL80211_ATTR_REASON_CODE])
8180                 return -EINVAL;
8181
8182         if (!rdev->ops->disassoc)
8183                 return -EOPNOTSUPP;
8184
8185         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8186             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8187                 return -EOPNOTSUPP;
8188
8189         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8190
8191         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
8192         if (reason_code == 0) {
8193                 /* Reason Code 0 is reserved */
8194                 return -EINVAL;
8195         }
8196
8197         if (info->attrs[NL80211_ATTR_IE]) {
8198                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8199                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8200         }
8201
8202         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
8203
8204         wdev_lock(dev->ieee80211_ptr);
8205         err = cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
8206                                      local_state_change);
8207         wdev_unlock(dev->ieee80211_ptr);
8208         return err;
8209 }
8210
8211 static bool
8212 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
8213                          int mcast_rate[NUM_NL80211_BANDS],
8214                          int rateval)
8215 {
8216         struct wiphy *wiphy = &rdev->wiphy;
8217         bool found = false;
8218         int band, i;
8219
8220         for (band = 0; band < NUM_NL80211_BANDS; band++) {
8221                 struct ieee80211_supported_band *sband;
8222
8223                 sband = wiphy->bands[band];
8224                 if (!sband)
8225                         continue;
8226
8227                 for (i = 0; i < sband->n_bitrates; i++) {
8228                         if (sband->bitrates[i].bitrate == rateval) {
8229                                 mcast_rate[band] = i + 1;
8230                                 found = true;
8231                                 break;
8232                         }
8233                 }
8234         }
8235
8236         return found;
8237 }
8238
8239 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
8240 {
8241         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8242         struct net_device *dev = info->user_ptr[1];
8243         struct cfg80211_ibss_params ibss;
8244         struct wiphy *wiphy;
8245         struct cfg80211_cached_keys *connkeys = NULL;
8246         int err;
8247
8248         memset(&ibss, 0, sizeof(ibss));
8249
8250         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8251                 return -EINVAL;
8252
8253         if (!info->attrs[NL80211_ATTR_SSID] ||
8254             !nla_len(info->attrs[NL80211_ATTR_SSID]))
8255                 return -EINVAL;
8256
8257         ibss.beacon_interval = 100;
8258
8259         if (info->attrs[NL80211_ATTR_BEACON_INTERVAL])
8260                 ibss.beacon_interval =
8261                         nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
8262
8263         err = cfg80211_validate_beacon_int(rdev, NL80211_IFTYPE_ADHOC,
8264                                            ibss.beacon_interval);
8265         if (err)
8266                 return err;
8267
8268         if (!rdev->ops->join_ibss)
8269                 return -EOPNOTSUPP;
8270
8271         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
8272                 return -EOPNOTSUPP;
8273
8274         wiphy = &rdev->wiphy;
8275
8276         if (info->attrs[NL80211_ATTR_MAC]) {
8277                 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8278
8279                 if (!is_valid_ether_addr(ibss.bssid))
8280                         return -EINVAL;
8281         }
8282         ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
8283         ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
8284
8285         if (info->attrs[NL80211_ATTR_IE]) {
8286                 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8287                 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8288         }
8289
8290         err = nl80211_parse_chandef(rdev, info, &ibss.chandef);
8291         if (err)
8292                 return err;
8293
8294         if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef,
8295                                      NL80211_IFTYPE_ADHOC))
8296                 return -EINVAL;
8297
8298         switch (ibss.chandef.width) {
8299         case NL80211_CHAN_WIDTH_5:
8300         case NL80211_CHAN_WIDTH_10:
8301         case NL80211_CHAN_WIDTH_20_NOHT:
8302                 break;
8303         case NL80211_CHAN_WIDTH_20:
8304         case NL80211_CHAN_WIDTH_40:
8305                 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
8306                         return -EINVAL;
8307                 break;
8308         case NL80211_CHAN_WIDTH_80:
8309         case NL80211_CHAN_WIDTH_80P80:
8310         case NL80211_CHAN_WIDTH_160:
8311                 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
8312                         return -EINVAL;
8313                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
8314                                              NL80211_EXT_FEATURE_VHT_IBSS))
8315                         return -EINVAL;
8316                 break;
8317         default:
8318                 return -EINVAL;
8319         }
8320
8321         ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
8322         ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
8323
8324         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
8325                 u8 *rates =
8326                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
8327                 int n_rates =
8328                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
8329                 struct ieee80211_supported_band *sband =
8330                         wiphy->bands[ibss.chandef.chan->band];
8331
8332                 err = ieee80211_get_ratemask(sband, rates, n_rates,
8333                                              &ibss.basic_rates);
8334                 if (err)
8335                         return err;
8336         }
8337
8338         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
8339                 memcpy(&ibss.ht_capa_mask,
8340                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
8341                        sizeof(ibss.ht_capa_mask));
8342
8343         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
8344                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
8345                         return -EINVAL;
8346                 memcpy(&ibss.ht_capa,
8347                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
8348                        sizeof(ibss.ht_capa));
8349         }
8350
8351         if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
8352             !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
8353                         nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
8354                 return -EINVAL;
8355
8356         if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
8357                 bool no_ht = false;
8358
8359                 connkeys = nl80211_parse_connkeys(rdev,
8360                                           info->attrs[NL80211_ATTR_KEYS],
8361                                           &no_ht);
8362                 if (IS_ERR(connkeys))
8363                         return PTR_ERR(connkeys);
8364
8365                 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) &&
8366                     no_ht) {
8367                         kzfree(connkeys);
8368                         return -EINVAL;
8369                 }
8370         }
8371
8372         ibss.control_port =
8373                 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]);
8374
8375         ibss.userspace_handles_dfs =
8376                 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
8377
8378         err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
8379         if (err)
8380                 kzfree(connkeys);
8381         return err;
8382 }
8383
8384 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
8385 {
8386         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8387         struct net_device *dev = info->user_ptr[1];
8388
8389         if (!rdev->ops->leave_ibss)
8390                 return -EOPNOTSUPP;
8391
8392         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
8393                 return -EOPNOTSUPP;
8394
8395         return cfg80211_leave_ibss(rdev, dev, false);
8396 }
8397
8398 static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info)
8399 {
8400         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8401         struct net_device *dev = info->user_ptr[1];
8402         int mcast_rate[NUM_NL80211_BANDS];
8403         u32 nla_rate;
8404         int err;
8405
8406         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
8407             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
8408             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_OCB)
8409                 return -EOPNOTSUPP;
8410
8411         if (!rdev->ops->set_mcast_rate)
8412                 return -EOPNOTSUPP;
8413
8414         memset(mcast_rate, 0, sizeof(mcast_rate));
8415
8416         if (!info->attrs[NL80211_ATTR_MCAST_RATE])
8417                 return -EINVAL;
8418
8419         nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]);
8420         if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate))
8421                 return -EINVAL;
8422
8423         err = rdev_set_mcast_rate(rdev, dev, mcast_rate);
8424
8425         return err;
8426 }
8427
8428 static struct sk_buff *
8429 __cfg80211_alloc_vendor_skb(struct cfg80211_registered_device *rdev,
8430                             struct wireless_dev *wdev, int approxlen,
8431                             u32 portid, u32 seq, enum nl80211_commands cmd,
8432                             enum nl80211_attrs attr,
8433                             const struct nl80211_vendor_cmd_info *info,
8434                             gfp_t gfp)
8435 {
8436         struct sk_buff *skb;
8437         void *hdr;
8438         struct nlattr *data;
8439
8440         skb = nlmsg_new(approxlen + 100, gfp);
8441         if (!skb)
8442                 return NULL;
8443
8444         hdr = nl80211hdr_put(skb, portid, seq, 0, cmd);
8445         if (!hdr) {
8446                 kfree_skb(skb);
8447                 return NULL;
8448         }
8449
8450         if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
8451                 goto nla_put_failure;
8452
8453         if (info) {
8454                 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_ID,
8455                                 info->vendor_id))
8456                         goto nla_put_failure;
8457                 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_SUBCMD,
8458                                 info->subcmd))
8459                         goto nla_put_failure;
8460         }
8461
8462         if (wdev) {
8463                 if (nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
8464                                       wdev_id(wdev), NL80211_ATTR_PAD))
8465                         goto nla_put_failure;
8466                 if (wdev->netdev &&
8467                     nla_put_u32(skb, NL80211_ATTR_IFINDEX,
8468                                 wdev->netdev->ifindex))
8469                         goto nla_put_failure;
8470         }
8471
8472         data = nla_nest_start(skb, attr);
8473         if (!data)
8474                 goto nla_put_failure;
8475
8476         ((void **)skb->cb)[0] = rdev;
8477         ((void **)skb->cb)[1] = hdr;
8478         ((void **)skb->cb)[2] = data;
8479
8480         return skb;
8481
8482  nla_put_failure:
8483         kfree_skb(skb);
8484         return NULL;
8485 }
8486
8487 struct sk_buff *__cfg80211_alloc_event_skb(struct wiphy *wiphy,
8488                                            struct wireless_dev *wdev,
8489                                            enum nl80211_commands cmd,
8490                                            enum nl80211_attrs attr,
8491                                            int vendor_event_idx,
8492                                            int approxlen, gfp_t gfp)
8493 {
8494         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
8495         const struct nl80211_vendor_cmd_info *info;
8496
8497         switch (cmd) {
8498         case NL80211_CMD_TESTMODE:
8499                 if (WARN_ON(vendor_event_idx != -1))
8500                         return NULL;
8501                 info = NULL;
8502                 break;
8503         case NL80211_CMD_VENDOR:
8504                 if (WARN_ON(vendor_event_idx < 0 ||
8505                             vendor_event_idx >= wiphy->n_vendor_events))
8506                         return NULL;
8507                 info = &wiphy->vendor_events[vendor_event_idx];
8508                 break;
8509         default:
8510                 WARN_ON(1);
8511                 return NULL;
8512         }
8513
8514         return __cfg80211_alloc_vendor_skb(rdev, wdev, approxlen, 0, 0,
8515                                            cmd, attr, info, gfp);
8516 }
8517 EXPORT_SYMBOL(__cfg80211_alloc_event_skb);
8518
8519 void __cfg80211_send_event_skb(struct sk_buff *skb, gfp_t gfp)
8520 {
8521         struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
8522         void *hdr = ((void **)skb->cb)[1];
8523         struct nlattr *data = ((void **)skb->cb)[2];
8524         enum nl80211_multicast_groups mcgrp = NL80211_MCGRP_TESTMODE;
8525
8526         /* clear CB data for netlink core to own from now on */
8527         memset(skb->cb, 0, sizeof(skb->cb));
8528
8529         nla_nest_end(skb, data);
8530         genlmsg_end(skb, hdr);
8531
8532         if (data->nla_type == NL80211_ATTR_VENDOR_DATA)
8533                 mcgrp = NL80211_MCGRP_VENDOR;
8534
8535         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), skb, 0,
8536                                 mcgrp, gfp);
8537 }
8538 EXPORT_SYMBOL(__cfg80211_send_event_skb);
8539
8540 #ifdef CONFIG_NL80211_TESTMODE
8541 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
8542 {
8543         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8544         struct wireless_dev *wdev =
8545                 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
8546         int err;
8547
8548         if (!rdev->ops->testmode_cmd)
8549                 return -EOPNOTSUPP;
8550
8551         if (IS_ERR(wdev)) {
8552                 err = PTR_ERR(wdev);
8553                 if (err != -EINVAL)
8554                         return err;
8555                 wdev = NULL;
8556         } else if (wdev->wiphy != &rdev->wiphy) {
8557                 return -EINVAL;
8558         }
8559
8560         if (!info->attrs[NL80211_ATTR_TESTDATA])
8561                 return -EINVAL;
8562
8563         rdev->cur_cmd_info = info;
8564         err = rdev_testmode_cmd(rdev, wdev,
8565                                 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
8566                                 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
8567         rdev->cur_cmd_info = NULL;
8568
8569         return err;
8570 }
8571
8572 static int nl80211_testmode_dump(struct sk_buff *skb,
8573                                  struct netlink_callback *cb)
8574 {
8575         struct cfg80211_registered_device *rdev;
8576         int err;
8577         long phy_idx;
8578         void *data = NULL;
8579         int data_len = 0;
8580
8581         rtnl_lock();
8582
8583         if (cb->args[0]) {
8584                 /*
8585                  * 0 is a valid index, but not valid for args[0],
8586                  * so we need to offset by 1.
8587                  */
8588                 phy_idx = cb->args[0] - 1;
8589         } else {
8590                 struct nlattr **attrbuf = genl_family_attrbuf(&nl80211_fam);
8591
8592                 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
8593                                   attrbuf, nl80211_fam.maxattr, nl80211_policy);
8594                 if (err)
8595                         goto out_err;
8596
8597                 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf);
8598                 if (IS_ERR(rdev)) {
8599                         err = PTR_ERR(rdev);
8600                         goto out_err;
8601                 }
8602                 phy_idx = rdev->wiphy_idx;
8603                 rdev = NULL;
8604
8605                 if (attrbuf[NL80211_ATTR_TESTDATA])
8606                         cb->args[1] = (long)attrbuf[NL80211_ATTR_TESTDATA];
8607         }
8608
8609         if (cb->args[1]) {
8610                 data = nla_data((void *)cb->args[1]);
8611                 data_len = nla_len((void *)cb->args[1]);
8612         }
8613
8614         rdev = cfg80211_rdev_by_wiphy_idx(phy_idx);
8615         if (!rdev) {
8616                 err = -ENOENT;
8617                 goto out_err;
8618         }
8619
8620         if (!rdev->ops->testmode_dump) {
8621                 err = -EOPNOTSUPP;
8622                 goto out_err;
8623         }
8624
8625         while (1) {
8626                 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
8627                                            cb->nlh->nlmsg_seq, NLM_F_MULTI,
8628                                            NL80211_CMD_TESTMODE);
8629                 struct nlattr *tmdata;
8630
8631                 if (!hdr)
8632                         break;
8633
8634                 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) {
8635                         genlmsg_cancel(skb, hdr);
8636                         break;
8637                 }
8638
8639                 tmdata = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
8640                 if (!tmdata) {
8641                         genlmsg_cancel(skb, hdr);
8642                         break;
8643                 }
8644                 err = rdev_testmode_dump(rdev, skb, cb, data, data_len);
8645                 nla_nest_end(skb, tmdata);
8646
8647                 if (err == -ENOBUFS || err == -ENOENT) {
8648                         genlmsg_cancel(skb, hdr);
8649                         break;
8650                 } else if (err) {
8651                         genlmsg_cancel(skb, hdr);
8652                         goto out_err;
8653                 }
8654
8655                 genlmsg_end(skb, hdr);
8656         }
8657
8658         err = skb->len;
8659         /* see above */
8660         cb->args[0] = phy_idx + 1;
8661  out_err:
8662         rtnl_unlock();
8663         return err;
8664 }
8665 #endif
8666
8667 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
8668 {
8669         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8670         struct net_device *dev = info->user_ptr[1];
8671         struct cfg80211_connect_params connect;
8672         struct wiphy *wiphy;
8673         struct cfg80211_cached_keys *connkeys = NULL;
8674         int err;
8675
8676         memset(&connect, 0, sizeof(connect));
8677
8678         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8679                 return -EINVAL;
8680
8681         if (!info->attrs[NL80211_ATTR_SSID] ||
8682             !nla_len(info->attrs[NL80211_ATTR_SSID]))
8683                 return -EINVAL;
8684
8685         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
8686                 connect.auth_type =
8687                         nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
8688                 if (!nl80211_valid_auth_type(rdev, connect.auth_type,
8689                                              NL80211_CMD_CONNECT))
8690                         return -EINVAL;
8691         } else
8692                 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
8693
8694         connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
8695
8696         err = nl80211_crypto_settings(rdev, info, &connect.crypto,
8697                                       NL80211_MAX_NR_CIPHER_SUITES);
8698         if (err)
8699                 return err;
8700
8701         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8702             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8703                 return -EOPNOTSUPP;
8704
8705         wiphy = &rdev->wiphy;
8706
8707         connect.bg_scan_period = -1;
8708         if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] &&
8709                 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) {
8710                 connect.bg_scan_period =
8711                         nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]);
8712         }
8713
8714         if (info->attrs[NL80211_ATTR_MAC])
8715                 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8716         else if (info->attrs[NL80211_ATTR_MAC_HINT])
8717                 connect.bssid_hint =
8718                         nla_data(info->attrs[NL80211_ATTR_MAC_HINT]);
8719         connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
8720         connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
8721
8722         if (info->attrs[NL80211_ATTR_IE]) {
8723                 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8724                 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8725         }
8726
8727         if (info->attrs[NL80211_ATTR_USE_MFP]) {
8728                 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
8729                 if (connect.mfp != NL80211_MFP_REQUIRED &&
8730                     connect.mfp != NL80211_MFP_NO)
8731                         return -EINVAL;
8732         } else {
8733                 connect.mfp = NL80211_MFP_NO;
8734         }
8735
8736         if (info->attrs[NL80211_ATTR_PREV_BSSID])
8737                 connect.prev_bssid =
8738                         nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
8739
8740         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
8741                 connect.channel = nl80211_get_valid_chan(
8742                         wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ]);
8743                 if (!connect.channel)
8744                         return -EINVAL;
8745         } else if (info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]) {
8746                 connect.channel_hint = nl80211_get_valid_chan(
8747                         wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]);
8748                 if (!connect.channel_hint)
8749                         return -EINVAL;
8750         }
8751
8752         if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
8753                 connkeys = nl80211_parse_connkeys(rdev,
8754                                           info->attrs[NL80211_ATTR_KEYS], NULL);
8755                 if (IS_ERR(connkeys))
8756                         return PTR_ERR(connkeys);
8757         }
8758
8759         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
8760                 connect.flags |= ASSOC_REQ_DISABLE_HT;
8761
8762         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
8763                 memcpy(&connect.ht_capa_mask,
8764                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
8765                        sizeof(connect.ht_capa_mask));
8766
8767         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
8768                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) {
8769                         kzfree(connkeys);
8770                         return -EINVAL;
8771                 }
8772                 memcpy(&connect.ht_capa,
8773                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
8774                        sizeof(connect.ht_capa));
8775         }
8776
8777         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
8778                 connect.flags |= ASSOC_REQ_DISABLE_VHT;
8779
8780         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
8781                 memcpy(&connect.vht_capa_mask,
8782                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
8783                        sizeof(connect.vht_capa_mask));
8784
8785         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
8786                 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) {
8787                         kzfree(connkeys);
8788                         return -EINVAL;
8789                 }
8790                 memcpy(&connect.vht_capa,
8791                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
8792                        sizeof(connect.vht_capa));
8793         }
8794
8795         if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
8796                 if (!((rdev->wiphy.features &
8797                         NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
8798                        (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
8799                     !wiphy_ext_feature_isset(&rdev->wiphy,
8800                                              NL80211_EXT_FEATURE_RRM)) {
8801                         kzfree(connkeys);
8802                         return -EINVAL;
8803                 }
8804                 connect.flags |= ASSOC_REQ_USE_RRM;
8805         }
8806
8807         connect.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
8808         if (connect.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ]) {
8809                 kzfree(connkeys);
8810                 return -EOPNOTSUPP;
8811         }
8812
8813         if (info->attrs[NL80211_ATTR_BSS_SELECT]) {
8814                 /* bss selection makes no sense if bssid is set */
8815                 if (connect.bssid) {
8816                         kzfree(connkeys);
8817                         return -EINVAL;
8818                 }
8819
8820                 err = parse_bss_select(info->attrs[NL80211_ATTR_BSS_SELECT],
8821                                        wiphy, &connect.bss_select);
8822                 if (err) {
8823                         kzfree(connkeys);
8824                         return err;
8825                 }
8826         }
8827
8828         wdev_lock(dev->ieee80211_ptr);
8829
8830         err = cfg80211_connect(rdev, dev, &connect, connkeys,
8831                                connect.prev_bssid);
8832         if (err)
8833                 kzfree(connkeys);
8834
8835         if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
8836                 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
8837                 if (connect.bssid)
8838                         memcpy(dev->ieee80211_ptr->disconnect_bssid,
8839                                connect.bssid, ETH_ALEN);
8840                 else
8841                         memset(dev->ieee80211_ptr->disconnect_bssid,
8842                                0, ETH_ALEN);
8843         }
8844
8845         wdev_unlock(dev->ieee80211_ptr);
8846
8847         return err;
8848 }
8849
8850 static int nl80211_update_connect_params(struct sk_buff *skb,
8851                                          struct genl_info *info)
8852 {
8853         struct cfg80211_connect_params connect = {};
8854         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8855         struct net_device *dev = info->user_ptr[1];
8856         struct wireless_dev *wdev = dev->ieee80211_ptr;
8857         u32 changed = 0;
8858         int ret;
8859
8860         if (!rdev->ops->update_connect_params)
8861                 return -EOPNOTSUPP;
8862
8863         if (info->attrs[NL80211_ATTR_IE]) {
8864                 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8865                         return -EINVAL;
8866                 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8867                 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8868                 changed |= UPDATE_ASSOC_IES;
8869         }
8870
8871         wdev_lock(dev->ieee80211_ptr);
8872         if (!wdev->current_bss)
8873                 ret = -ENOLINK;
8874         else
8875                 ret = rdev_update_connect_params(rdev, dev, &connect, changed);
8876         wdev_unlock(dev->ieee80211_ptr);
8877
8878         return ret;
8879 }
8880
8881 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
8882 {
8883         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8884         struct net_device *dev = info->user_ptr[1];
8885         u16 reason;
8886         int ret;
8887
8888         if (!info->attrs[NL80211_ATTR_REASON_CODE])
8889                 reason = WLAN_REASON_DEAUTH_LEAVING;
8890         else
8891                 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
8892
8893         if (reason == 0)
8894                 return -EINVAL;
8895
8896         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8897             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8898                 return -EOPNOTSUPP;
8899
8900         wdev_lock(dev->ieee80211_ptr);
8901         ret = cfg80211_disconnect(rdev, dev, reason, true);
8902         wdev_unlock(dev->ieee80211_ptr);
8903         return ret;
8904 }
8905
8906 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
8907 {
8908         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8909         struct net *net;
8910         int err;
8911
8912         if (info->attrs[NL80211_ATTR_PID]) {
8913                 u32 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
8914
8915                 net = get_net_ns_by_pid(pid);
8916         } else if (info->attrs[NL80211_ATTR_NETNS_FD]) {
8917                 u32 fd = nla_get_u32(info->attrs[NL80211_ATTR_NETNS_FD]);
8918
8919                 net = get_net_ns_by_fd(fd);
8920         } else {
8921                 return -EINVAL;
8922         }
8923
8924         if (IS_ERR(net))
8925                 return PTR_ERR(net);
8926
8927         err = 0;
8928
8929         /* check if anything to do */
8930         if (!net_eq(wiphy_net(&rdev->wiphy), net))
8931                 err = cfg80211_switch_netns(rdev, net);
8932
8933         put_net(net);
8934         return err;
8935 }
8936
8937 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
8938 {
8939         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8940         int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
8941                         struct cfg80211_pmksa *pmksa) = NULL;
8942         struct net_device *dev = info->user_ptr[1];
8943         struct cfg80211_pmksa pmksa;
8944
8945         memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
8946
8947         if (!info->attrs[NL80211_ATTR_MAC])
8948                 return -EINVAL;
8949
8950         if (!info->attrs[NL80211_ATTR_PMKID])
8951                 return -EINVAL;
8952
8953         pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
8954         pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8955
8956         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8957             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8958                 return -EOPNOTSUPP;
8959
8960         switch (info->genlhdr->cmd) {
8961         case NL80211_CMD_SET_PMKSA:
8962                 rdev_ops = rdev->ops->set_pmksa;
8963                 break;
8964         case NL80211_CMD_DEL_PMKSA:
8965                 rdev_ops = rdev->ops->del_pmksa;
8966                 break;
8967         default:
8968                 WARN_ON(1);
8969                 break;
8970         }
8971
8972         if (!rdev_ops)
8973                 return -EOPNOTSUPP;
8974
8975         return rdev_ops(&rdev->wiphy, dev, &pmksa);
8976 }
8977
8978 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
8979 {
8980         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8981         struct net_device *dev = info->user_ptr[1];
8982
8983         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8984             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8985                 return -EOPNOTSUPP;
8986
8987         if (!rdev->ops->flush_pmksa)
8988                 return -EOPNOTSUPP;
8989
8990         return rdev_flush_pmksa(rdev, dev);
8991 }
8992
8993 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
8994 {
8995         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8996         struct net_device *dev = info->user_ptr[1];
8997         u8 action_code, dialog_token;
8998         u32 peer_capability = 0;
8999         u16 status_code;
9000         u8 *peer;
9001         bool initiator;
9002
9003         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
9004             !rdev->ops->tdls_mgmt)
9005                 return -EOPNOTSUPP;
9006
9007         if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
9008             !info->attrs[NL80211_ATTR_STATUS_CODE] ||
9009             !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
9010             !info->attrs[NL80211_ATTR_IE] ||
9011             !info->attrs[NL80211_ATTR_MAC])
9012                 return -EINVAL;
9013
9014         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
9015         action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
9016         status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
9017         dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
9018         initiator = nla_get_flag(info->attrs[NL80211_ATTR_TDLS_INITIATOR]);
9019         if (info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY])
9020                 peer_capability =
9021                         nla_get_u32(info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY]);
9022
9023         return rdev_tdls_mgmt(rdev, dev, peer, action_code,
9024                               dialog_token, status_code, peer_capability,
9025                               initiator,
9026                               nla_data(info->attrs[NL80211_ATTR_IE]),
9027                               nla_len(info->attrs[NL80211_ATTR_IE]));
9028 }
9029
9030 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
9031 {
9032         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9033         struct net_device *dev = info->user_ptr[1];
9034         enum nl80211_tdls_operation operation;
9035         u8 *peer;
9036
9037         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
9038             !rdev->ops->tdls_oper)
9039                 return -EOPNOTSUPP;
9040
9041         if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
9042             !info->attrs[NL80211_ATTR_MAC])
9043                 return -EINVAL;
9044
9045         operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
9046         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
9047
9048         return rdev_tdls_oper(rdev, dev, peer, operation);
9049 }
9050
9051 static int nl80211_remain_on_channel(struct sk_buff *skb,
9052                                      struct genl_info *info)
9053 {
9054         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9055         struct wireless_dev *wdev = info->user_ptr[1];
9056         struct cfg80211_chan_def chandef;
9057         struct sk_buff *msg;
9058         void *hdr;
9059         u64 cookie;
9060         u32 duration;
9061         int err;
9062
9063         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
9064             !info->attrs[NL80211_ATTR_DURATION])
9065                 return -EINVAL;
9066
9067         duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
9068
9069         if (!rdev->ops->remain_on_channel ||
9070             !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL))
9071                 return -EOPNOTSUPP;
9072
9073         /*
9074          * We should be on that channel for at least a minimum amount of
9075          * time (10ms) but no longer than the driver supports.
9076          */
9077         if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
9078             duration > rdev->wiphy.max_remain_on_channel_duration)
9079                 return -EINVAL;
9080
9081         err = nl80211_parse_chandef(rdev, info, &chandef);
9082         if (err)
9083                 return err;
9084
9085         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9086         if (!msg)
9087                 return -ENOMEM;
9088
9089         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9090                              NL80211_CMD_REMAIN_ON_CHANNEL);
9091         if (!hdr) {
9092                 err = -ENOBUFS;
9093                 goto free_msg;
9094         }
9095
9096         err = rdev_remain_on_channel(rdev, wdev, chandef.chan,
9097                                      duration, &cookie);
9098
9099         if (err)
9100                 goto free_msg;
9101
9102         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
9103                               NL80211_ATTR_PAD))
9104                 goto nla_put_failure;
9105
9106         genlmsg_end(msg, hdr);
9107
9108         return genlmsg_reply(msg, info);
9109
9110  nla_put_failure:
9111         err = -ENOBUFS;
9112  free_msg:
9113         nlmsg_free(msg);
9114         return err;
9115 }
9116
9117 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
9118                                             struct genl_info *info)
9119 {
9120         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9121         struct wireless_dev *wdev = info->user_ptr[1];
9122         u64 cookie;
9123
9124         if (!info->attrs[NL80211_ATTR_COOKIE])
9125                 return -EINVAL;
9126
9127         if (!rdev->ops->cancel_remain_on_channel)
9128                 return -EOPNOTSUPP;
9129
9130         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
9131
9132         return rdev_cancel_remain_on_channel(rdev, wdev, cookie);
9133 }
9134
9135 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
9136                                        struct genl_info *info)
9137 {
9138         struct cfg80211_bitrate_mask mask;
9139         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9140         struct net_device *dev = info->user_ptr[1];
9141         int err;
9142
9143         if (!rdev->ops->set_bitrate_mask)
9144                 return -EOPNOTSUPP;
9145
9146         err = nl80211_parse_tx_bitrate_mask(info, &mask);
9147         if (err)
9148                 return err;
9149
9150         return rdev_set_bitrate_mask(rdev, dev, NULL, &mask);
9151 }
9152
9153 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
9154 {
9155         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9156         struct wireless_dev *wdev = info->user_ptr[1];
9157         u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
9158
9159         if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
9160                 return -EINVAL;
9161
9162         if (info->attrs[NL80211_ATTR_FRAME_TYPE])
9163                 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
9164
9165         switch (wdev->iftype) {
9166         case NL80211_IFTYPE_STATION:
9167         case NL80211_IFTYPE_ADHOC:
9168         case NL80211_IFTYPE_P2P_CLIENT:
9169         case NL80211_IFTYPE_AP:
9170         case NL80211_IFTYPE_AP_VLAN:
9171         case NL80211_IFTYPE_MESH_POINT:
9172         case NL80211_IFTYPE_P2P_GO:
9173         case NL80211_IFTYPE_P2P_DEVICE:
9174                 break;
9175         case NL80211_IFTYPE_NAN:
9176         default:
9177                 return -EOPNOTSUPP;
9178         }
9179
9180         /* not much point in registering if we can't reply */
9181         if (!rdev->ops->mgmt_tx)
9182                 return -EOPNOTSUPP;
9183
9184         return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type,
9185                         nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
9186                         nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]));
9187 }
9188
9189 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
9190 {
9191         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9192         struct wireless_dev *wdev = info->user_ptr[1];
9193         struct cfg80211_chan_def chandef;
9194         int err;
9195         void *hdr = NULL;
9196         u64 cookie;
9197         struct sk_buff *msg = NULL;
9198         struct cfg80211_mgmt_tx_params params = {
9199                 .dont_wait_for_ack =
9200                         info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK],
9201         };
9202
9203         if (!info->attrs[NL80211_ATTR_FRAME])
9204                 return -EINVAL;
9205
9206         if (!rdev->ops->mgmt_tx)
9207                 return -EOPNOTSUPP;
9208
9209         switch (wdev->iftype) {
9210         case NL80211_IFTYPE_P2P_DEVICE:
9211                 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
9212                         return -EINVAL;
9213         case NL80211_IFTYPE_STATION:
9214         case NL80211_IFTYPE_ADHOC:
9215         case NL80211_IFTYPE_P2P_CLIENT:
9216         case NL80211_IFTYPE_AP:
9217         case NL80211_IFTYPE_AP_VLAN:
9218         case NL80211_IFTYPE_MESH_POINT:
9219         case NL80211_IFTYPE_P2P_GO:
9220                 break;
9221         case NL80211_IFTYPE_NAN:
9222         default:
9223                 return -EOPNOTSUPP;
9224         }
9225
9226         if (info->attrs[NL80211_ATTR_DURATION]) {
9227                 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
9228                         return -EINVAL;
9229                 params.wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
9230
9231                 /*
9232                  * We should wait on the channel for at least a minimum amount
9233                  * of time (10ms) but no longer than the driver supports.
9234                  */
9235                 if (params.wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
9236                     params.wait > rdev->wiphy.max_remain_on_channel_duration)
9237                         return -EINVAL;
9238         }
9239
9240         params.offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
9241
9242         if (params.offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
9243                 return -EINVAL;
9244
9245         params.no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
9246
9247         /* get the channel if any has been specified, otherwise pass NULL to
9248          * the driver. The latter will use the current one
9249          */
9250         chandef.chan = NULL;
9251         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
9252                 err = nl80211_parse_chandef(rdev, info, &chandef);
9253                 if (err)
9254                         return err;
9255         }
9256
9257         if (!chandef.chan && params.offchan)
9258                 return -EINVAL;
9259
9260         params.buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
9261         params.len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
9262
9263         if (info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]) {
9264                 int len = nla_len(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
9265                 int i;
9266
9267                 if (len % sizeof(u16))
9268                         return -EINVAL;
9269
9270                 params.n_csa_offsets = len / sizeof(u16);
9271                 params.csa_offsets =
9272                         nla_data(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
9273
9274                 /* check that all the offsets fit the frame */
9275                 for (i = 0; i < params.n_csa_offsets; i++) {
9276                         if (params.csa_offsets[i] >= params.len)
9277                                 return -EINVAL;
9278                 }
9279         }
9280
9281         if (!params.dont_wait_for_ack) {
9282                 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9283                 if (!msg)
9284                         return -ENOMEM;
9285
9286                 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9287                                      NL80211_CMD_FRAME);
9288                 if (!hdr) {
9289                         err = -ENOBUFS;
9290                         goto free_msg;
9291                 }
9292         }
9293
9294         params.chan = chandef.chan;
9295         err = cfg80211_mlme_mgmt_tx(rdev, wdev, &params, &cookie);
9296         if (err)
9297                 goto free_msg;
9298
9299         if (msg) {
9300                 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
9301                                       NL80211_ATTR_PAD))
9302                         goto nla_put_failure;
9303
9304                 genlmsg_end(msg, hdr);
9305                 return genlmsg_reply(msg, info);
9306         }
9307
9308         return 0;
9309
9310  nla_put_failure:
9311         err = -ENOBUFS;
9312  free_msg:
9313         nlmsg_free(msg);
9314         return err;
9315 }
9316
9317 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
9318 {
9319         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9320         struct wireless_dev *wdev = info->user_ptr[1];
9321         u64 cookie;
9322
9323         if (!info->attrs[NL80211_ATTR_COOKIE])
9324                 return -EINVAL;
9325
9326         if (!rdev->ops->mgmt_tx_cancel_wait)
9327                 return -EOPNOTSUPP;
9328
9329         switch (wdev->iftype) {
9330         case NL80211_IFTYPE_STATION:
9331         case NL80211_IFTYPE_ADHOC:
9332         case NL80211_IFTYPE_P2P_CLIENT:
9333         case NL80211_IFTYPE_AP:
9334         case NL80211_IFTYPE_AP_VLAN:
9335         case NL80211_IFTYPE_P2P_GO:
9336         case NL80211_IFTYPE_P2P_DEVICE:
9337                 break;
9338         case NL80211_IFTYPE_NAN:
9339         default:
9340                 return -EOPNOTSUPP;
9341         }
9342
9343         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
9344
9345         return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie);
9346 }
9347
9348 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
9349 {
9350         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9351         struct wireless_dev *wdev;
9352         struct net_device *dev = info->user_ptr[1];
9353         u8 ps_state;
9354         bool state;
9355         int err;
9356
9357         if (!info->attrs[NL80211_ATTR_PS_STATE])
9358                 return -EINVAL;
9359
9360         ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
9361
9362         if (ps_state != NL80211_PS_DISABLED && ps_state != NL80211_PS_ENABLED)
9363                 return -EINVAL;
9364
9365         wdev = dev->ieee80211_ptr;
9366
9367         if (!rdev->ops->set_power_mgmt)
9368                 return -EOPNOTSUPP;
9369
9370         state = (ps_state == NL80211_PS_ENABLED) ? true : false;
9371
9372         if (state == wdev->ps)
9373                 return 0;
9374
9375         err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout);
9376         if (!err)
9377                 wdev->ps = state;
9378         return err;
9379 }
9380
9381 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
9382 {
9383         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9384         enum nl80211_ps_state ps_state;
9385         struct wireless_dev *wdev;
9386         struct net_device *dev = info->user_ptr[1];
9387         struct sk_buff *msg;
9388         void *hdr;
9389         int err;
9390
9391         wdev = dev->ieee80211_ptr;
9392
9393         if (!rdev->ops->set_power_mgmt)
9394                 return -EOPNOTSUPP;
9395
9396         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9397         if (!msg)
9398                 return -ENOMEM;
9399
9400         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9401                              NL80211_CMD_GET_POWER_SAVE);
9402         if (!hdr) {
9403                 err = -ENOBUFS;
9404                 goto free_msg;
9405         }
9406
9407         if (wdev->ps)
9408                 ps_state = NL80211_PS_ENABLED;
9409         else
9410                 ps_state = NL80211_PS_DISABLED;
9411
9412         if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state))
9413                 goto nla_put_failure;
9414
9415         genlmsg_end(msg, hdr);
9416         return genlmsg_reply(msg, info);
9417
9418  nla_put_failure:
9419         err = -ENOBUFS;
9420  free_msg:
9421         nlmsg_free(msg);
9422         return err;
9423 }
9424
9425 static const struct nla_policy
9426 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] = {
9427         [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 },
9428         [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
9429         [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
9430         [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 },
9431         [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 },
9432         [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 },
9433 };
9434
9435 static int nl80211_set_cqm_txe(struct genl_info *info,
9436                                u32 rate, u32 pkts, u32 intvl)
9437 {
9438         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9439         struct net_device *dev = info->user_ptr[1];
9440         struct wireless_dev *wdev = dev->ieee80211_ptr;
9441
9442         if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL)
9443                 return -EINVAL;
9444
9445         if (!rdev->ops->set_cqm_txe_config)
9446                 return -EOPNOTSUPP;
9447
9448         if (wdev->iftype != NL80211_IFTYPE_STATION &&
9449             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
9450                 return -EOPNOTSUPP;
9451
9452         return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl);
9453 }
9454
9455 static int nl80211_set_cqm_rssi(struct genl_info *info,
9456                                 s32 threshold, u32 hysteresis)
9457 {
9458         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9459         struct net_device *dev = info->user_ptr[1];
9460         struct wireless_dev *wdev = dev->ieee80211_ptr;
9461
9462         if (threshold > 0)
9463                 return -EINVAL;
9464
9465         /* disabling - hysteresis should also be zero then */
9466         if (threshold == 0)
9467                 hysteresis = 0;
9468
9469         if (!rdev->ops->set_cqm_rssi_config)
9470                 return -EOPNOTSUPP;
9471
9472         if (wdev->iftype != NL80211_IFTYPE_STATION &&
9473             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
9474                 return -EOPNOTSUPP;
9475
9476         return rdev_set_cqm_rssi_config(rdev, dev, threshold, hysteresis);
9477 }
9478
9479 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
9480 {
9481         struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
9482         struct nlattr *cqm;
9483         int err;
9484
9485         cqm = info->attrs[NL80211_ATTR_CQM];
9486         if (!cqm)
9487                 return -EINVAL;
9488
9489         err = nla_parse_nested(attrs, NL80211_ATTR_CQM_MAX, cqm,
9490                                nl80211_attr_cqm_policy);
9491         if (err)
9492                 return err;
9493
9494         if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
9495             attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
9496                 s32 threshold = nla_get_s32(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
9497                 u32 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
9498
9499                 return nl80211_set_cqm_rssi(info, threshold, hysteresis);
9500         }
9501
9502         if (attrs[NL80211_ATTR_CQM_TXE_RATE] &&
9503             attrs[NL80211_ATTR_CQM_TXE_PKTS] &&
9504             attrs[NL80211_ATTR_CQM_TXE_INTVL]) {
9505                 u32 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]);
9506                 u32 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]);
9507                 u32 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]);
9508
9509                 return nl80211_set_cqm_txe(info, rate, pkts, intvl);
9510         }
9511
9512         return -EINVAL;
9513 }
9514
9515 static int nl80211_join_ocb(struct sk_buff *skb, struct genl_info *info)
9516 {
9517         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9518         struct net_device *dev = info->user_ptr[1];
9519         struct ocb_setup setup = {};
9520         int err;
9521
9522         err = nl80211_parse_chandef(rdev, info, &setup.chandef);
9523         if (err)
9524                 return err;
9525
9526         return cfg80211_join_ocb(rdev, dev, &setup);
9527 }
9528
9529 static int nl80211_leave_ocb(struct sk_buff *skb, struct genl_info *info)
9530 {
9531         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9532         struct net_device *dev = info->user_ptr[1];
9533
9534         return cfg80211_leave_ocb(rdev, dev);
9535 }
9536
9537 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
9538 {
9539         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9540         struct net_device *dev = info->user_ptr[1];
9541         struct mesh_config cfg;
9542         struct mesh_setup setup;
9543         int err;
9544
9545         /* start with default */
9546         memcpy(&cfg, &default_mesh_config, sizeof(cfg));
9547         memcpy(&setup, &default_mesh_setup, sizeof(setup));
9548
9549         if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
9550                 /* and parse parameters if given */
9551                 err = nl80211_parse_mesh_config(info, &cfg, NULL);
9552                 if (err)
9553                         return err;
9554         }
9555
9556         if (!info->attrs[NL80211_ATTR_MESH_ID] ||
9557             !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
9558                 return -EINVAL;
9559
9560         setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
9561         setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
9562
9563         if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
9564             !nl80211_parse_mcast_rate(rdev, setup.mcast_rate,
9565                             nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
9566                         return -EINVAL;
9567
9568         if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
9569                 setup.beacon_interval =
9570                         nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
9571
9572                 err = cfg80211_validate_beacon_int(rdev,
9573                                                    NL80211_IFTYPE_MESH_POINT,
9574                                                    setup.beacon_interval);
9575                 if (err)
9576                         return err;
9577         }
9578
9579         if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
9580                 setup.dtim_period =
9581                         nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
9582                 if (setup.dtim_period < 1 || setup.dtim_period > 100)
9583                         return -EINVAL;
9584         }
9585
9586         if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
9587                 /* parse additional setup parameters if given */
9588                 err = nl80211_parse_mesh_setup(info, &setup);
9589                 if (err)
9590                         return err;
9591         }
9592
9593         if (setup.user_mpm)
9594                 cfg.auto_open_plinks = false;
9595
9596         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
9597                 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
9598                 if (err)
9599                         return err;
9600         } else {
9601                 /* cfg80211_join_mesh() will sort it out */
9602                 setup.chandef.chan = NULL;
9603         }
9604
9605         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
9606                 u8 *rates = nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
9607                 int n_rates =
9608                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
9609                 struct ieee80211_supported_band *sband;
9610
9611                 if (!setup.chandef.chan)
9612                         return -EINVAL;
9613
9614                 sband = rdev->wiphy.bands[setup.chandef.chan->band];
9615
9616                 err = ieee80211_get_ratemask(sband, rates, n_rates,
9617                                              &setup.basic_rates);
9618                 if (err)
9619                         return err;
9620         }
9621
9622         if (info->attrs[NL80211_ATTR_TX_RATES]) {
9623                 err = nl80211_parse_tx_bitrate_mask(info, &setup.beacon_rate);
9624                 if (err)
9625                         return err;
9626
9627                 err = validate_beacon_tx_rate(rdev, setup.chandef.chan->band,
9628                                               &setup.beacon_rate);
9629                 if (err)
9630                         return err;
9631         }
9632
9633         return cfg80211_join_mesh(rdev, dev, &setup, &cfg);
9634 }
9635
9636 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
9637 {
9638         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9639         struct net_device *dev = info->user_ptr[1];
9640
9641         return cfg80211_leave_mesh(rdev, dev);
9642 }
9643
9644 #ifdef CONFIG_PM
9645 static int nl80211_send_wowlan_patterns(struct sk_buff *msg,
9646                                         struct cfg80211_registered_device *rdev)
9647 {
9648         struct cfg80211_wowlan *wowlan = rdev->wiphy.wowlan_config;
9649         struct nlattr *nl_pats, *nl_pat;
9650         int i, pat_len;
9651
9652         if (!wowlan->n_patterns)
9653                 return 0;
9654
9655         nl_pats = nla_nest_start(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN);
9656         if (!nl_pats)
9657                 return -ENOBUFS;
9658
9659         for (i = 0; i < wowlan->n_patterns; i++) {
9660                 nl_pat = nla_nest_start(msg, i + 1);
9661                 if (!nl_pat)
9662                         return -ENOBUFS;
9663                 pat_len = wowlan->patterns[i].pattern_len;
9664                 if (nla_put(msg, NL80211_PKTPAT_MASK, DIV_ROUND_UP(pat_len, 8),
9665                             wowlan->patterns[i].mask) ||
9666                     nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
9667                             wowlan->patterns[i].pattern) ||
9668                     nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
9669                                 wowlan->patterns[i].pkt_offset))
9670                         return -ENOBUFS;
9671                 nla_nest_end(msg, nl_pat);
9672         }
9673         nla_nest_end(msg, nl_pats);
9674
9675         return 0;
9676 }
9677
9678 static int nl80211_send_wowlan_tcp(struct sk_buff *msg,
9679                                    struct cfg80211_wowlan_tcp *tcp)
9680 {
9681         struct nlattr *nl_tcp;
9682
9683         if (!tcp)
9684                 return 0;
9685
9686         nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
9687         if (!nl_tcp)
9688                 return -ENOBUFS;
9689
9690         if (nla_put_in_addr(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) ||
9691             nla_put_in_addr(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) ||
9692             nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) ||
9693             nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) ||
9694             nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) ||
9695             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
9696                     tcp->payload_len, tcp->payload) ||
9697             nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
9698                         tcp->data_interval) ||
9699             nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
9700                     tcp->wake_len, tcp->wake_data) ||
9701             nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK,
9702                     DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask))
9703                 return -ENOBUFS;
9704
9705         if (tcp->payload_seq.len &&
9706             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ,
9707                     sizeof(tcp->payload_seq), &tcp->payload_seq))
9708                 return -ENOBUFS;
9709
9710         if (tcp->payload_tok.len &&
9711             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
9712                     sizeof(tcp->payload_tok) + tcp->tokens_size,
9713                     &tcp->payload_tok))
9714                 return -ENOBUFS;
9715
9716         nla_nest_end(msg, nl_tcp);
9717
9718         return 0;
9719 }
9720
9721 static int nl80211_send_wowlan_nd(struct sk_buff *msg,
9722                                   struct cfg80211_sched_scan_request *req)
9723 {
9724         struct nlattr *nd, *freqs, *matches, *match, *scan_plans, *scan_plan;
9725         int i;
9726
9727         if (!req)
9728                 return 0;
9729
9730         nd = nla_nest_start(msg, NL80211_WOWLAN_TRIG_NET_DETECT);
9731         if (!nd)
9732                 return -ENOBUFS;
9733
9734         if (req->n_scan_plans == 1 &&
9735             nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_INTERVAL,
9736                         req->scan_plans[0].interval * 1000))
9737                 return -ENOBUFS;
9738
9739         if (nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_DELAY, req->delay))
9740                 return -ENOBUFS;
9741
9742         if (req->relative_rssi_set) {
9743                 struct nl80211_bss_select_rssi_adjust rssi_adjust;
9744
9745                 if (nla_put_s8(msg, NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI,
9746                                req->relative_rssi))
9747                         return -ENOBUFS;
9748
9749                 rssi_adjust.band = req->rssi_adjust.band;
9750                 rssi_adjust.delta = req->rssi_adjust.delta;
9751                 if (nla_put(msg, NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST,
9752                             sizeof(rssi_adjust), &rssi_adjust))
9753                         return -ENOBUFS;
9754         }
9755
9756         freqs = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
9757         if (!freqs)
9758                 return -ENOBUFS;
9759
9760         for (i = 0; i < req->n_channels; i++) {
9761                 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
9762                         return -ENOBUFS;
9763         }
9764
9765         nla_nest_end(msg, freqs);
9766
9767         if (req->n_match_sets) {
9768                 matches = nla_nest_start(msg, NL80211_ATTR_SCHED_SCAN_MATCH);
9769                 if (!matches)
9770                         return -ENOBUFS;
9771
9772                 for (i = 0; i < req->n_match_sets; i++) {
9773                         match = nla_nest_start(msg, i);
9774                         if (!match)
9775                                 return -ENOBUFS;
9776
9777                         if (nla_put(msg, NL80211_SCHED_SCAN_MATCH_ATTR_SSID,
9778                                     req->match_sets[i].ssid.ssid_len,
9779                                     req->match_sets[i].ssid.ssid))
9780                                 return -ENOBUFS;
9781                         nla_nest_end(msg, match);
9782                 }
9783                 nla_nest_end(msg, matches);
9784         }
9785
9786         scan_plans = nla_nest_start(msg, NL80211_ATTR_SCHED_SCAN_PLANS);
9787         if (!scan_plans)
9788                 return -ENOBUFS;
9789
9790         for (i = 0; i < req->n_scan_plans; i++) {
9791                 scan_plan = nla_nest_start(msg, i + 1);
9792                 if (!scan_plan)
9793                         return -ENOBUFS;
9794
9795                 if (!scan_plan ||
9796                     nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_INTERVAL,
9797                                 req->scan_plans[i].interval) ||
9798                     (req->scan_plans[i].iterations &&
9799                      nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_ITERATIONS,
9800                                  req->scan_plans[i].iterations)))
9801                         return -ENOBUFS;
9802                 nla_nest_end(msg, scan_plan);
9803         }
9804         nla_nest_end(msg, scan_plans);
9805
9806         nla_nest_end(msg, nd);
9807
9808         return 0;
9809 }
9810
9811 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
9812 {
9813         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9814         struct sk_buff *msg;
9815         void *hdr;
9816         u32 size = NLMSG_DEFAULT_SIZE;
9817
9818         if (!rdev->wiphy.wowlan)
9819                 return -EOPNOTSUPP;
9820
9821         if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) {
9822                 /* adjust size to have room for all the data */
9823                 size += rdev->wiphy.wowlan_config->tcp->tokens_size +
9824                         rdev->wiphy.wowlan_config->tcp->payload_len +
9825                         rdev->wiphy.wowlan_config->tcp->wake_len +
9826                         rdev->wiphy.wowlan_config->tcp->wake_len / 8;
9827         }
9828
9829         msg = nlmsg_new(size, GFP_KERNEL);
9830         if (!msg)
9831                 return -ENOMEM;
9832
9833         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9834                              NL80211_CMD_GET_WOWLAN);
9835         if (!hdr)
9836                 goto nla_put_failure;
9837
9838         if (rdev->wiphy.wowlan_config) {
9839                 struct nlattr *nl_wowlan;
9840
9841                 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
9842                 if (!nl_wowlan)
9843                         goto nla_put_failure;
9844
9845                 if ((rdev->wiphy.wowlan_config->any &&
9846                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
9847                     (rdev->wiphy.wowlan_config->disconnect &&
9848                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
9849                     (rdev->wiphy.wowlan_config->magic_pkt &&
9850                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
9851                     (rdev->wiphy.wowlan_config->gtk_rekey_failure &&
9852                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
9853                     (rdev->wiphy.wowlan_config->eap_identity_req &&
9854                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
9855                     (rdev->wiphy.wowlan_config->four_way_handshake &&
9856                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
9857                     (rdev->wiphy.wowlan_config->rfkill_release &&
9858                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
9859                         goto nla_put_failure;
9860
9861                 if (nl80211_send_wowlan_patterns(msg, rdev))
9862                         goto nla_put_failure;
9863
9864                 if (nl80211_send_wowlan_tcp(msg,
9865                                             rdev->wiphy.wowlan_config->tcp))
9866                         goto nla_put_failure;
9867
9868                 if (nl80211_send_wowlan_nd(
9869                             msg,
9870                             rdev->wiphy.wowlan_config->nd_config))
9871                         goto nla_put_failure;
9872
9873                 nla_nest_end(msg, nl_wowlan);
9874         }
9875
9876         genlmsg_end(msg, hdr);
9877         return genlmsg_reply(msg, info);
9878
9879 nla_put_failure:
9880         nlmsg_free(msg);
9881         return -ENOBUFS;
9882 }
9883
9884 static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev,
9885                                     struct nlattr *attr,
9886                                     struct cfg80211_wowlan *trig)
9887 {
9888         struct nlattr *tb[NUM_NL80211_WOWLAN_TCP];
9889         struct cfg80211_wowlan_tcp *cfg;
9890         struct nl80211_wowlan_tcp_data_token *tok = NULL;
9891         struct nl80211_wowlan_tcp_data_seq *seq = NULL;
9892         u32 size;
9893         u32 data_size, wake_size, tokens_size = 0, wake_mask_size;
9894         int err, port;
9895
9896         if (!rdev->wiphy.wowlan->tcp)
9897                 return -EINVAL;
9898
9899         err = nla_parse_nested(tb, MAX_NL80211_WOWLAN_TCP, attr,
9900                                nl80211_wowlan_tcp_policy);
9901         if (err)
9902                 return err;
9903
9904         if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] ||
9905             !tb[NL80211_WOWLAN_TCP_DST_IPV4] ||
9906             !tb[NL80211_WOWLAN_TCP_DST_MAC] ||
9907             !tb[NL80211_WOWLAN_TCP_DST_PORT] ||
9908             !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] ||
9909             !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] ||
9910             !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] ||
9911             !tb[NL80211_WOWLAN_TCP_WAKE_MASK])
9912                 return -EINVAL;
9913
9914         data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]);
9915         if (data_size > rdev->wiphy.wowlan->tcp->data_payload_max)
9916                 return -EINVAL;
9917
9918         if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) >
9919                         rdev->wiphy.wowlan->tcp->data_interval_max ||
9920             nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0)
9921                 return -EINVAL;
9922
9923         wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]);
9924         if (wake_size > rdev->wiphy.wowlan->tcp->wake_payload_max)
9925                 return -EINVAL;
9926
9927         wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]);
9928         if (wake_mask_size != DIV_ROUND_UP(wake_size, 8))
9929                 return -EINVAL;
9930
9931         if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) {
9932                 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
9933
9934                 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
9935                 tokens_size = tokln - sizeof(*tok);
9936
9937                 if (!tok->len || tokens_size % tok->len)
9938                         return -EINVAL;
9939                 if (!rdev->wiphy.wowlan->tcp->tok)
9940                         return -EINVAL;
9941                 if (tok->len > rdev->wiphy.wowlan->tcp->tok->max_len)
9942                         return -EINVAL;
9943                 if (tok->len < rdev->wiphy.wowlan->tcp->tok->min_len)
9944                         return -EINVAL;
9945                 if (tokens_size > rdev->wiphy.wowlan->tcp->tok->bufsize)
9946                         return -EINVAL;
9947                 if (tok->offset + tok->len > data_size)
9948                         return -EINVAL;
9949         }
9950
9951         if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) {
9952                 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]);
9953                 if (!rdev->wiphy.wowlan->tcp->seq)
9954                         return -EINVAL;
9955                 if (seq->len == 0 || seq->len > 4)
9956                         return -EINVAL;
9957                 if (seq->len + seq->offset > data_size)
9958                         return -EINVAL;
9959         }
9960
9961         size = sizeof(*cfg);
9962         size += data_size;
9963         size += wake_size + wake_mask_size;
9964         size += tokens_size;
9965
9966         cfg = kzalloc(size, GFP_KERNEL);
9967         if (!cfg)
9968                 return -ENOMEM;
9969         cfg->src = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_SRC_IPV4]);
9970         cfg->dst = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_DST_IPV4]);
9971         memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]),
9972                ETH_ALEN);
9973         if (tb[NL80211_WOWLAN_TCP_SRC_PORT])
9974                 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]);
9975         else
9976                 port = 0;
9977 #ifdef CONFIG_INET
9978         /* allocate a socket and port for it and use it */
9979         err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM,
9980                             IPPROTO_TCP, &cfg->sock, 1);
9981         if (err) {
9982                 kfree(cfg);
9983                 return err;
9984         }
9985         if (inet_csk_get_port(cfg->sock->sk, port)) {
9986                 sock_release(cfg->sock);
9987                 kfree(cfg);
9988                 return -EADDRINUSE;
9989         }
9990         cfg->src_port = inet_sk(cfg->sock->sk)->inet_num;
9991 #else
9992         if (!port) {
9993                 kfree(cfg);
9994                 return -EINVAL;
9995         }
9996         cfg->src_port = port;
9997 #endif
9998
9999         cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]);
10000         cfg->payload_len = data_size;
10001         cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size;
10002         memcpy((void *)cfg->payload,
10003                nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]),
10004                data_size);
10005         if (seq)
10006                 cfg->payload_seq = *seq;
10007         cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]);
10008         cfg->wake_len = wake_size;
10009         cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size;
10010         memcpy((void *)cfg->wake_data,
10011                nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]),
10012                wake_size);
10013         cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size +
10014                          data_size + wake_size;
10015         memcpy((void *)cfg->wake_mask,
10016                nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]),
10017                wake_mask_size);
10018         if (tok) {
10019                 cfg->tokens_size = tokens_size;
10020                 memcpy(&cfg->payload_tok, tok, sizeof(*tok) + tokens_size);
10021         }
10022
10023         trig->tcp = cfg;
10024
10025         return 0;
10026 }
10027
10028 static int nl80211_parse_wowlan_nd(struct cfg80211_registered_device *rdev,
10029                                    const struct wiphy_wowlan_support *wowlan,
10030                                    struct nlattr *attr,
10031                                    struct cfg80211_wowlan *trig)
10032 {
10033         struct nlattr **tb;
10034         int err;
10035
10036         tb = kzalloc(NUM_NL80211_ATTR * sizeof(*tb), GFP_KERNEL);
10037         if (!tb)
10038                 return -ENOMEM;
10039
10040         if (!(wowlan->flags & WIPHY_WOWLAN_NET_DETECT)) {
10041                 err = -EOPNOTSUPP;
10042                 goto out;
10043         }
10044
10045         err = nla_parse_nested(tb, NL80211_ATTR_MAX, attr, nl80211_policy);
10046         if (err)
10047                 goto out;
10048
10049         trig->nd_config = nl80211_parse_sched_scan(&rdev->wiphy, NULL, tb);
10050         err = PTR_ERR_OR_ZERO(trig->nd_config);
10051         if (err)
10052                 trig->nd_config = NULL;
10053
10054 out:
10055         kfree(tb);
10056         return err;
10057 }
10058
10059 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
10060 {
10061         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10062         struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
10063         struct cfg80211_wowlan new_triggers = {};
10064         struct cfg80211_wowlan *ntrig;
10065         const struct wiphy_wowlan_support *wowlan = rdev->wiphy.wowlan;
10066         int err, i;
10067         bool prev_enabled = rdev->wiphy.wowlan_config;
10068         bool regular = false;
10069
10070         if (!wowlan)
10071                 return -EOPNOTSUPP;
10072
10073         if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) {
10074                 cfg80211_rdev_free_wowlan(rdev);
10075                 rdev->wiphy.wowlan_config = NULL;
10076                 goto set_wakeup;
10077         }
10078
10079         err = nla_parse_nested(tb, MAX_NL80211_WOWLAN_TRIG,
10080                                info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS],
10081                                nl80211_wowlan_policy);
10082         if (err)
10083                 return err;
10084
10085         if (tb[NL80211_WOWLAN_TRIG_ANY]) {
10086                 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
10087                         return -EINVAL;
10088                 new_triggers.any = true;
10089         }
10090
10091         if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
10092                 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
10093                         return -EINVAL;
10094                 new_triggers.disconnect = true;
10095                 regular = true;
10096         }
10097
10098         if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
10099                 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
10100                         return -EINVAL;
10101                 new_triggers.magic_pkt = true;
10102                 regular = true;
10103         }
10104
10105         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
10106                 return -EINVAL;
10107
10108         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
10109                 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
10110                         return -EINVAL;
10111                 new_triggers.gtk_rekey_failure = true;
10112                 regular = true;
10113         }
10114
10115         if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
10116                 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
10117                         return -EINVAL;
10118                 new_triggers.eap_identity_req = true;
10119                 regular = true;
10120         }
10121
10122         if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
10123                 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
10124                         return -EINVAL;
10125                 new_triggers.four_way_handshake = true;
10126                 regular = true;
10127         }
10128
10129         if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
10130                 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
10131                         return -EINVAL;
10132                 new_triggers.rfkill_release = true;
10133                 regular = true;
10134         }
10135
10136         if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
10137                 struct nlattr *pat;
10138                 int n_patterns = 0;
10139                 int rem, pat_len, mask_len, pkt_offset;
10140                 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
10141
10142                 regular = true;
10143
10144                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
10145                                     rem)
10146                         n_patterns++;
10147                 if (n_patterns > wowlan->n_patterns)
10148                         return -EINVAL;
10149
10150                 new_triggers.patterns = kcalloc(n_patterns,
10151                                                 sizeof(new_triggers.patterns[0]),
10152                                                 GFP_KERNEL);
10153                 if (!new_triggers.patterns)
10154                         return -ENOMEM;
10155
10156                 new_triggers.n_patterns = n_patterns;
10157                 i = 0;
10158
10159                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
10160                                     rem) {
10161                         u8 *mask_pat;
10162
10163                         nla_parse_nested(pat_tb, MAX_NL80211_PKTPAT, pat,
10164                                          NULL);
10165                         err = -EINVAL;
10166                         if (!pat_tb[NL80211_PKTPAT_MASK] ||
10167                             !pat_tb[NL80211_PKTPAT_PATTERN])
10168                                 goto error;
10169                         pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
10170                         mask_len = DIV_ROUND_UP(pat_len, 8);
10171                         if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
10172                                 goto error;
10173                         if (pat_len > wowlan->pattern_max_len ||
10174                             pat_len < wowlan->pattern_min_len)
10175                                 goto error;
10176
10177                         if (!pat_tb[NL80211_PKTPAT_OFFSET])
10178                                 pkt_offset = 0;
10179                         else
10180                                 pkt_offset = nla_get_u32(
10181                                         pat_tb[NL80211_PKTPAT_OFFSET]);
10182                         if (pkt_offset > wowlan->max_pkt_offset)
10183                                 goto error;
10184                         new_triggers.patterns[i].pkt_offset = pkt_offset;
10185
10186                         mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
10187                         if (!mask_pat) {
10188                                 err = -ENOMEM;
10189                                 goto error;
10190                         }
10191                         new_triggers.patterns[i].mask = mask_pat;
10192                         memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
10193                                mask_len);
10194                         mask_pat += mask_len;
10195                         new_triggers.patterns[i].pattern = mask_pat;
10196                         new_triggers.patterns[i].pattern_len = pat_len;
10197                         memcpy(mask_pat,
10198                                nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
10199                                pat_len);
10200                         i++;
10201                 }
10202         }
10203
10204         if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) {
10205                 regular = true;
10206                 err = nl80211_parse_wowlan_tcp(
10207                         rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION],
10208                         &new_triggers);
10209                 if (err)
10210                         goto error;
10211         }
10212
10213         if (tb[NL80211_WOWLAN_TRIG_NET_DETECT]) {
10214                 regular = true;
10215                 err = nl80211_parse_wowlan_nd(
10216                         rdev, wowlan, tb[NL80211_WOWLAN_TRIG_NET_DETECT],
10217                         &new_triggers);
10218                 if (err)
10219                         goto error;
10220         }
10221
10222         /* The 'any' trigger means the device continues operating more or less
10223          * as in its normal operation mode and wakes up the host on most of the
10224          * normal interrupts (like packet RX, ...)
10225          * It therefore makes little sense to combine with the more constrained
10226          * wakeup trigger modes.
10227          */
10228         if (new_triggers.any && regular) {
10229                 err = -EINVAL;
10230                 goto error;
10231         }
10232
10233         ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL);
10234         if (!ntrig) {
10235                 err = -ENOMEM;
10236                 goto error;
10237         }
10238         cfg80211_rdev_free_wowlan(rdev);
10239         rdev->wiphy.wowlan_config = ntrig;
10240
10241  set_wakeup:
10242         if (rdev->ops->set_wakeup &&
10243             prev_enabled != !!rdev->wiphy.wowlan_config)
10244                 rdev_set_wakeup(rdev, rdev->wiphy.wowlan_config);
10245
10246         return 0;
10247  error:
10248         for (i = 0; i < new_triggers.n_patterns; i++)
10249                 kfree(new_triggers.patterns[i].mask);
10250         kfree(new_triggers.patterns);
10251         if (new_triggers.tcp && new_triggers.tcp->sock)
10252                 sock_release(new_triggers.tcp->sock);
10253         kfree(new_triggers.tcp);
10254         kfree(new_triggers.nd_config);
10255         return err;
10256 }
10257 #endif
10258
10259 static int nl80211_send_coalesce_rules(struct sk_buff *msg,
10260                                        struct cfg80211_registered_device *rdev)
10261 {
10262         struct nlattr *nl_pats, *nl_pat, *nl_rule, *nl_rules;
10263         int i, j, pat_len;
10264         struct cfg80211_coalesce_rules *rule;
10265
10266         if (!rdev->coalesce->n_rules)
10267                 return 0;
10268
10269         nl_rules = nla_nest_start(msg, NL80211_ATTR_COALESCE_RULE);
10270         if (!nl_rules)
10271                 return -ENOBUFS;
10272
10273         for (i = 0; i < rdev->coalesce->n_rules; i++) {
10274                 nl_rule = nla_nest_start(msg, i + 1);
10275                 if (!nl_rule)
10276                         return -ENOBUFS;
10277
10278                 rule = &rdev->coalesce->rules[i];
10279                 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_DELAY,
10280                                 rule->delay))
10281                         return -ENOBUFS;
10282
10283                 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_CONDITION,
10284                                 rule->condition))
10285                         return -ENOBUFS;
10286
10287                 nl_pats = nla_nest_start(msg,
10288                                 NL80211_ATTR_COALESCE_RULE_PKT_PATTERN);
10289                 if (!nl_pats)
10290                         return -ENOBUFS;
10291
10292                 for (j = 0; j < rule->n_patterns; j++) {
10293                         nl_pat = nla_nest_start(msg, j + 1);
10294                         if (!nl_pat)
10295                                 return -ENOBUFS;
10296                         pat_len = rule->patterns[j].pattern_len;
10297                         if (nla_put(msg, NL80211_PKTPAT_MASK,
10298                                     DIV_ROUND_UP(pat_len, 8),
10299                                     rule->patterns[j].mask) ||
10300                             nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
10301                                     rule->patterns[j].pattern) ||
10302                             nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
10303                                         rule->patterns[j].pkt_offset))
10304                                 return -ENOBUFS;
10305                         nla_nest_end(msg, nl_pat);
10306                 }
10307                 nla_nest_end(msg, nl_pats);
10308                 nla_nest_end(msg, nl_rule);
10309         }
10310         nla_nest_end(msg, nl_rules);
10311
10312         return 0;
10313 }
10314
10315 static int nl80211_get_coalesce(struct sk_buff *skb, struct genl_info *info)
10316 {
10317         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10318         struct sk_buff *msg;
10319         void *hdr;
10320
10321         if (!rdev->wiphy.coalesce)
10322                 return -EOPNOTSUPP;
10323
10324         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10325         if (!msg)
10326                 return -ENOMEM;
10327
10328         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
10329                              NL80211_CMD_GET_COALESCE);
10330         if (!hdr)
10331                 goto nla_put_failure;
10332
10333         if (rdev->coalesce && nl80211_send_coalesce_rules(msg, rdev))
10334                 goto nla_put_failure;
10335
10336         genlmsg_end(msg, hdr);
10337         return genlmsg_reply(msg, info);
10338
10339 nla_put_failure:
10340         nlmsg_free(msg);
10341         return -ENOBUFS;
10342 }
10343
10344 void cfg80211_rdev_free_coalesce(struct cfg80211_registered_device *rdev)
10345 {
10346         struct cfg80211_coalesce *coalesce = rdev->coalesce;
10347         int i, j;
10348         struct cfg80211_coalesce_rules *rule;
10349
10350         if (!coalesce)
10351                 return;
10352
10353         for (i = 0; i < coalesce->n_rules; i++) {
10354                 rule = &coalesce->rules[i];
10355                 for (j = 0; j < rule->n_patterns; j++)
10356                         kfree(rule->patterns[j].mask);
10357                 kfree(rule->patterns);
10358         }
10359         kfree(coalesce->rules);
10360         kfree(coalesce);
10361         rdev->coalesce = NULL;
10362 }
10363
10364 static int nl80211_parse_coalesce_rule(struct cfg80211_registered_device *rdev,
10365                                        struct nlattr *rule,
10366                                        struct cfg80211_coalesce_rules *new_rule)
10367 {
10368         int err, i;
10369         const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
10370         struct nlattr *tb[NUM_NL80211_ATTR_COALESCE_RULE], *pat;
10371         int rem, pat_len, mask_len, pkt_offset, n_patterns = 0;
10372         struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
10373
10374         err = nla_parse_nested(tb, NL80211_ATTR_COALESCE_RULE_MAX, rule,
10375                                nl80211_coalesce_policy);
10376         if (err)
10377                 return err;
10378
10379         if (tb[NL80211_ATTR_COALESCE_RULE_DELAY])
10380                 new_rule->delay =
10381                         nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_DELAY]);
10382         if (new_rule->delay > coalesce->max_delay)
10383                 return -EINVAL;
10384
10385         if (tb[NL80211_ATTR_COALESCE_RULE_CONDITION])
10386                 new_rule->condition =
10387                         nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_CONDITION]);
10388         if (new_rule->condition != NL80211_COALESCE_CONDITION_MATCH &&
10389             new_rule->condition != NL80211_COALESCE_CONDITION_NO_MATCH)
10390                 return -EINVAL;
10391
10392         if (!tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN])
10393                 return -EINVAL;
10394
10395         nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
10396                             rem)
10397                 n_patterns++;
10398         if (n_patterns > coalesce->n_patterns)
10399                 return -EINVAL;
10400
10401         new_rule->patterns = kcalloc(n_patterns, sizeof(new_rule->patterns[0]),
10402                                      GFP_KERNEL);
10403         if (!new_rule->patterns)
10404                 return -ENOMEM;
10405
10406         new_rule->n_patterns = n_patterns;
10407         i = 0;
10408
10409         nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
10410                             rem) {
10411                 u8 *mask_pat;
10412
10413                 nla_parse_nested(pat_tb, MAX_NL80211_PKTPAT, pat, NULL);
10414                 if (!pat_tb[NL80211_PKTPAT_MASK] ||
10415                     !pat_tb[NL80211_PKTPAT_PATTERN])
10416                         return -EINVAL;
10417                 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
10418                 mask_len = DIV_ROUND_UP(pat_len, 8);
10419                 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
10420                         return -EINVAL;
10421                 if (pat_len > coalesce->pattern_max_len ||
10422                     pat_len < coalesce->pattern_min_len)
10423                         return -EINVAL;
10424
10425                 if (!pat_tb[NL80211_PKTPAT_OFFSET])
10426                         pkt_offset = 0;
10427                 else
10428                         pkt_offset = nla_get_u32(pat_tb[NL80211_PKTPAT_OFFSET]);
10429                 if (pkt_offset > coalesce->max_pkt_offset)
10430                         return -EINVAL;
10431                 new_rule->patterns[i].pkt_offset = pkt_offset;
10432
10433                 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
10434                 if (!mask_pat)
10435                         return -ENOMEM;
10436
10437                 new_rule->patterns[i].mask = mask_pat;
10438                 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
10439                        mask_len);
10440
10441                 mask_pat += mask_len;
10442                 new_rule->patterns[i].pattern = mask_pat;
10443                 new_rule->patterns[i].pattern_len = pat_len;
10444                 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
10445                        pat_len);
10446                 i++;
10447         }
10448
10449         return 0;
10450 }
10451
10452 static int nl80211_set_coalesce(struct sk_buff *skb, struct genl_info *info)
10453 {
10454         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10455         const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
10456         struct cfg80211_coalesce new_coalesce = {};
10457         struct cfg80211_coalesce *n_coalesce;
10458         int err, rem_rule, n_rules = 0, i, j;
10459         struct nlattr *rule;
10460         struct cfg80211_coalesce_rules *tmp_rule;
10461
10462         if (!rdev->wiphy.coalesce || !rdev->ops->set_coalesce)
10463                 return -EOPNOTSUPP;
10464
10465         if (!info->attrs[NL80211_ATTR_COALESCE_RULE]) {
10466                 cfg80211_rdev_free_coalesce(rdev);
10467                 rdev_set_coalesce(rdev, NULL);
10468                 return 0;
10469         }
10470
10471         nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
10472                             rem_rule)
10473                 n_rules++;
10474         if (n_rules > coalesce->n_rules)
10475                 return -EINVAL;
10476
10477         new_coalesce.rules = kcalloc(n_rules, sizeof(new_coalesce.rules[0]),
10478                                      GFP_KERNEL);
10479         if (!new_coalesce.rules)
10480                 return -ENOMEM;
10481
10482         new_coalesce.n_rules = n_rules;
10483         i = 0;
10484
10485         nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
10486                             rem_rule) {
10487                 err = nl80211_parse_coalesce_rule(rdev, rule,
10488                                                   &new_coalesce.rules[i]);
10489                 if (err)
10490                         goto error;
10491
10492                 i++;
10493         }
10494
10495         err = rdev_set_coalesce(rdev, &new_coalesce);
10496         if (err)
10497                 goto error;
10498
10499         n_coalesce = kmemdup(&new_coalesce, sizeof(new_coalesce), GFP_KERNEL);
10500         if (!n_coalesce) {
10501                 err = -ENOMEM;
10502                 goto error;
10503         }
10504         cfg80211_rdev_free_coalesce(rdev);
10505         rdev->coalesce = n_coalesce;
10506
10507         return 0;
10508 error:
10509         for (i = 0; i < new_coalesce.n_rules; i++) {
10510                 tmp_rule = &new_coalesce.rules[i];
10511                 for (j = 0; j < tmp_rule->n_patterns; j++)
10512                         kfree(tmp_rule->patterns[j].mask);
10513                 kfree(tmp_rule->patterns);
10514         }
10515         kfree(new_coalesce.rules);
10516
10517         return err;
10518 }
10519
10520 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
10521 {
10522         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10523         struct net_device *dev = info->user_ptr[1];
10524         struct wireless_dev *wdev = dev->ieee80211_ptr;
10525         struct nlattr *tb[NUM_NL80211_REKEY_DATA];
10526         struct cfg80211_gtk_rekey_data rekey_data;
10527         int err;
10528
10529         if (!info->attrs[NL80211_ATTR_REKEY_DATA])
10530                 return -EINVAL;
10531
10532         err = nla_parse_nested(tb, MAX_NL80211_REKEY_DATA,
10533                                info->attrs[NL80211_ATTR_REKEY_DATA],
10534                                nl80211_rekey_policy);
10535         if (err)
10536                 return err;
10537
10538         if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN)
10539                 return -ERANGE;
10540         if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN)
10541                 return -ERANGE;
10542         if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN)
10543                 return -ERANGE;
10544
10545         rekey_data.kek = nla_data(tb[NL80211_REKEY_DATA_KEK]);
10546         rekey_data.kck = nla_data(tb[NL80211_REKEY_DATA_KCK]);
10547         rekey_data.replay_ctr = nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]);
10548
10549         wdev_lock(wdev);
10550         if (!wdev->current_bss) {
10551                 err = -ENOTCONN;
10552                 goto out;
10553         }
10554
10555         if (!rdev->ops->set_rekey_data) {
10556                 err = -EOPNOTSUPP;
10557                 goto out;
10558         }
10559
10560         err = rdev_set_rekey_data(rdev, dev, &rekey_data);
10561  out:
10562         wdev_unlock(wdev);
10563         return err;
10564 }
10565
10566 static int nl80211_register_unexpected_frame(struct sk_buff *skb,
10567                                              struct genl_info *info)
10568 {
10569         struct net_device *dev = info->user_ptr[1];
10570         struct wireless_dev *wdev = dev->ieee80211_ptr;
10571
10572         if (wdev->iftype != NL80211_IFTYPE_AP &&
10573             wdev->iftype != NL80211_IFTYPE_P2P_GO)
10574                 return -EINVAL;
10575
10576         if (wdev->ap_unexpected_nlportid)
10577                 return -EBUSY;
10578
10579         wdev->ap_unexpected_nlportid = info->snd_portid;
10580         return 0;
10581 }
10582
10583 static int nl80211_probe_client(struct sk_buff *skb,
10584                                 struct genl_info *info)
10585 {
10586         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10587         struct net_device *dev = info->user_ptr[1];
10588         struct wireless_dev *wdev = dev->ieee80211_ptr;
10589         struct sk_buff *msg;
10590         void *hdr;
10591         const u8 *addr;
10592         u64 cookie;
10593         int err;
10594
10595         if (wdev->iftype != NL80211_IFTYPE_AP &&
10596             wdev->iftype != NL80211_IFTYPE_P2P_GO)
10597                 return -EOPNOTSUPP;
10598
10599         if (!info->attrs[NL80211_ATTR_MAC])
10600                 return -EINVAL;
10601
10602         if (!rdev->ops->probe_client)
10603                 return -EOPNOTSUPP;
10604
10605         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10606         if (!msg)
10607                 return -ENOMEM;
10608
10609         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
10610                              NL80211_CMD_PROBE_CLIENT);
10611         if (!hdr) {
10612                 err = -ENOBUFS;
10613                 goto free_msg;
10614         }
10615
10616         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
10617
10618         err = rdev_probe_client(rdev, dev, addr, &cookie);
10619         if (err)
10620                 goto free_msg;
10621
10622         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
10623                               NL80211_ATTR_PAD))
10624                 goto nla_put_failure;
10625
10626         genlmsg_end(msg, hdr);
10627
10628         return genlmsg_reply(msg, info);
10629
10630  nla_put_failure:
10631         err = -ENOBUFS;
10632  free_msg:
10633         nlmsg_free(msg);
10634         return err;
10635 }
10636
10637 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
10638 {
10639         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10640         struct cfg80211_beacon_registration *reg, *nreg;
10641         int rv;
10642
10643         if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS))
10644                 return -EOPNOTSUPP;
10645
10646         nreg = kzalloc(sizeof(*nreg), GFP_KERNEL);
10647         if (!nreg)
10648                 return -ENOMEM;
10649
10650         /* First, check if already registered. */
10651         spin_lock_bh(&rdev->beacon_registrations_lock);
10652         list_for_each_entry(reg, &rdev->beacon_registrations, list) {
10653                 if (reg->nlportid == info->snd_portid) {
10654                         rv = -EALREADY;
10655                         goto out_err;
10656                 }
10657         }
10658         /* Add it to the list */
10659         nreg->nlportid = info->snd_portid;
10660         list_add(&nreg->list, &rdev->beacon_registrations);
10661
10662         spin_unlock_bh(&rdev->beacon_registrations_lock);
10663
10664         return 0;
10665 out_err:
10666         spin_unlock_bh(&rdev->beacon_registrations_lock);
10667         kfree(nreg);
10668         return rv;
10669 }
10670
10671 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info)
10672 {
10673         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10674         struct wireless_dev *wdev = info->user_ptr[1];
10675         int err;
10676
10677         if (!rdev->ops->start_p2p_device)
10678                 return -EOPNOTSUPP;
10679
10680         if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
10681                 return -EOPNOTSUPP;
10682
10683         if (wdev_running(wdev))
10684                 return 0;
10685
10686         if (rfkill_blocked(rdev->rfkill))
10687                 return -ERFKILL;
10688
10689         err = rdev_start_p2p_device(rdev, wdev);
10690         if (err)
10691                 return err;
10692
10693         wdev->is_running = true;
10694         rdev->opencount++;
10695
10696         return 0;
10697 }
10698
10699 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info)
10700 {
10701         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10702         struct wireless_dev *wdev = info->user_ptr[1];
10703
10704         if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
10705                 return -EOPNOTSUPP;
10706
10707         if (!rdev->ops->stop_p2p_device)
10708                 return -EOPNOTSUPP;
10709
10710         cfg80211_stop_p2p_device(rdev, wdev);
10711
10712         return 0;
10713 }
10714
10715 static int nl80211_start_nan(struct sk_buff *skb, struct genl_info *info)
10716 {
10717         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10718         struct wireless_dev *wdev = info->user_ptr[1];
10719         struct cfg80211_nan_conf conf = {};
10720         int err;
10721
10722         if (wdev->iftype != NL80211_IFTYPE_NAN)
10723                 return -EOPNOTSUPP;
10724
10725         if (wdev_running(wdev))
10726                 return -EEXIST;
10727
10728         if (rfkill_blocked(rdev->rfkill))
10729                 return -ERFKILL;
10730
10731         if (!info->attrs[NL80211_ATTR_NAN_MASTER_PREF])
10732                 return -EINVAL;
10733
10734         if (!info->attrs[NL80211_ATTR_NAN_DUAL])
10735                 return -EINVAL;
10736
10737         conf.master_pref =
10738                 nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]);
10739         if (!conf.master_pref)
10740                 return -EINVAL;
10741
10742         conf.dual = nla_get_u8(info->attrs[NL80211_ATTR_NAN_DUAL]);
10743
10744         err = rdev_start_nan(rdev, wdev, &conf);
10745         if (err)
10746                 return err;
10747
10748         wdev->is_running = true;
10749         rdev->opencount++;
10750
10751         return 0;
10752 }
10753
10754 static int nl80211_stop_nan(struct sk_buff *skb, struct genl_info *info)
10755 {
10756         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10757         struct wireless_dev *wdev = info->user_ptr[1];
10758
10759         if (wdev->iftype != NL80211_IFTYPE_NAN)
10760                 return -EOPNOTSUPP;
10761
10762         cfg80211_stop_nan(rdev, wdev);
10763
10764         return 0;
10765 }
10766
10767 static int validate_nan_filter(struct nlattr *filter_attr)
10768 {
10769         struct nlattr *attr;
10770         int len = 0, n_entries = 0, rem;
10771
10772         nla_for_each_nested(attr, filter_attr, rem) {
10773                 len += nla_len(attr);
10774                 n_entries++;
10775         }
10776
10777         if (len >= U8_MAX)
10778                 return -EINVAL;
10779
10780         return n_entries;
10781 }
10782
10783 static int handle_nan_filter(struct nlattr *attr_filter,
10784                              struct cfg80211_nan_func *func,
10785                              bool tx)
10786 {
10787         struct nlattr *attr;
10788         int n_entries, rem, i;
10789         struct cfg80211_nan_func_filter *filter;
10790
10791         n_entries = validate_nan_filter(attr_filter);
10792         if (n_entries < 0)
10793                 return n_entries;
10794
10795         BUILD_BUG_ON(sizeof(*func->rx_filters) != sizeof(*func->tx_filters));
10796
10797         filter = kcalloc(n_entries, sizeof(*func->rx_filters), GFP_KERNEL);
10798         if (!filter)
10799                 return -ENOMEM;
10800
10801         i = 0;
10802         nla_for_each_nested(attr, attr_filter, rem) {
10803                 filter[i].filter = nla_memdup(attr, GFP_KERNEL);
10804                 filter[i].len = nla_len(attr);
10805                 i++;
10806         }
10807         if (tx) {
10808                 func->num_tx_filters = n_entries;
10809                 func->tx_filters = filter;
10810         } else {
10811                 func->num_rx_filters = n_entries;
10812                 func->rx_filters = filter;
10813         }
10814
10815         return 0;
10816 }
10817
10818 static int nl80211_nan_add_func(struct sk_buff *skb,
10819                                 struct genl_info *info)
10820 {
10821         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10822         struct wireless_dev *wdev = info->user_ptr[1];
10823         struct nlattr *tb[NUM_NL80211_NAN_FUNC_ATTR], *func_attr;
10824         struct cfg80211_nan_func *func;
10825         struct sk_buff *msg = NULL;
10826         void *hdr = NULL;
10827         int err = 0;
10828
10829         if (wdev->iftype != NL80211_IFTYPE_NAN)
10830                 return -EOPNOTSUPP;
10831
10832         if (!wdev_running(wdev))
10833                 return -ENOTCONN;
10834
10835         if (!info->attrs[NL80211_ATTR_NAN_FUNC])
10836                 return -EINVAL;
10837
10838         if (wdev->owner_nlportid &&
10839             wdev->owner_nlportid != info->snd_portid)
10840                 return -ENOTCONN;
10841
10842         err = nla_parse_nested(tb, NL80211_NAN_FUNC_ATTR_MAX,
10843                                info->attrs[NL80211_ATTR_NAN_FUNC],
10844                                nl80211_nan_func_policy);
10845         if (err)
10846                 return err;
10847
10848         func = kzalloc(sizeof(*func), GFP_KERNEL);
10849         if (!func)
10850                 return -ENOMEM;
10851
10852         func->cookie = wdev->wiphy->cookie_counter++;
10853
10854         if (!tb[NL80211_NAN_FUNC_TYPE] ||
10855             nla_get_u8(tb[NL80211_NAN_FUNC_TYPE]) > NL80211_NAN_FUNC_MAX_TYPE) {
10856                 err = -EINVAL;
10857                 goto out;
10858         }
10859
10860
10861         func->type = nla_get_u8(tb[NL80211_NAN_FUNC_TYPE]);
10862
10863         if (!tb[NL80211_NAN_FUNC_SERVICE_ID]) {
10864                 err = -EINVAL;
10865                 goto out;
10866         }
10867
10868         memcpy(func->service_id, nla_data(tb[NL80211_NAN_FUNC_SERVICE_ID]),
10869                sizeof(func->service_id));
10870
10871         func->close_range =
10872                 nla_get_flag(tb[NL80211_NAN_FUNC_CLOSE_RANGE]);
10873
10874         if (tb[NL80211_NAN_FUNC_SERVICE_INFO]) {
10875                 func->serv_spec_info_len =
10876                         nla_len(tb[NL80211_NAN_FUNC_SERVICE_INFO]);
10877                 func->serv_spec_info =
10878                         kmemdup(nla_data(tb[NL80211_NAN_FUNC_SERVICE_INFO]),
10879                                 func->serv_spec_info_len,
10880                                 GFP_KERNEL);
10881                 if (!func->serv_spec_info) {
10882                         err = -ENOMEM;
10883                         goto out;
10884                 }
10885         }
10886
10887         if (tb[NL80211_NAN_FUNC_TTL])
10888                 func->ttl = nla_get_u32(tb[NL80211_NAN_FUNC_TTL]);
10889
10890         switch (func->type) {
10891         case NL80211_NAN_FUNC_PUBLISH:
10892                 if (!tb[NL80211_NAN_FUNC_PUBLISH_TYPE]) {
10893                         err = -EINVAL;
10894                         goto out;
10895                 }
10896
10897                 func->publish_type =
10898                         nla_get_u8(tb[NL80211_NAN_FUNC_PUBLISH_TYPE]);
10899                 func->publish_bcast =
10900                         nla_get_flag(tb[NL80211_NAN_FUNC_PUBLISH_BCAST]);
10901
10902                 if ((!(func->publish_type & NL80211_NAN_SOLICITED_PUBLISH)) &&
10903                         func->publish_bcast) {
10904                         err = -EINVAL;
10905                         goto out;
10906                 }
10907                 break;
10908         case NL80211_NAN_FUNC_SUBSCRIBE:
10909                 func->subscribe_active =
10910                         nla_get_flag(tb[NL80211_NAN_FUNC_SUBSCRIBE_ACTIVE]);
10911                 break;
10912         case NL80211_NAN_FUNC_FOLLOW_UP:
10913                 if (!tb[NL80211_NAN_FUNC_FOLLOW_UP_ID] ||
10914                     !tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID]) {
10915                         err = -EINVAL;
10916                         goto out;
10917                 }
10918
10919                 func->followup_id =
10920                         nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_ID]);
10921                 func->followup_reqid =
10922                         nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID]);
10923                 memcpy(func->followup_dest.addr,
10924                        nla_data(tb[NL80211_NAN_FUNC_FOLLOW_UP_DEST]),
10925                        sizeof(func->followup_dest.addr));
10926                 if (func->ttl) {
10927                         err = -EINVAL;
10928                         goto out;
10929                 }
10930                 break;
10931         default:
10932                 err = -EINVAL;
10933                 goto out;
10934         }
10935
10936         if (tb[NL80211_NAN_FUNC_SRF]) {
10937                 struct nlattr *srf_tb[NUM_NL80211_NAN_SRF_ATTR];
10938
10939                 err = nla_parse_nested(srf_tb, NL80211_NAN_SRF_ATTR_MAX,
10940                                        tb[NL80211_NAN_FUNC_SRF],
10941                                        nl80211_nan_srf_policy);
10942                 if (err)
10943                         goto out;
10944
10945                 func->srf_include =
10946                         nla_get_flag(srf_tb[NL80211_NAN_SRF_INCLUDE]);
10947
10948                 if (srf_tb[NL80211_NAN_SRF_BF]) {
10949                         if (srf_tb[NL80211_NAN_SRF_MAC_ADDRS] ||
10950                             !srf_tb[NL80211_NAN_SRF_BF_IDX]) {
10951                                 err = -EINVAL;
10952                                 goto out;
10953                         }
10954
10955                         func->srf_bf_len =
10956                                 nla_len(srf_tb[NL80211_NAN_SRF_BF]);
10957                         func->srf_bf =
10958                                 kmemdup(nla_data(srf_tb[NL80211_NAN_SRF_BF]),
10959                                         func->srf_bf_len, GFP_KERNEL);
10960                         if (!func->srf_bf) {
10961                                 err = -ENOMEM;
10962                                 goto out;
10963                         }
10964
10965                         func->srf_bf_idx =
10966                                 nla_get_u8(srf_tb[NL80211_NAN_SRF_BF_IDX]);
10967                 } else {
10968                         struct nlattr *attr, *mac_attr =
10969                                 srf_tb[NL80211_NAN_SRF_MAC_ADDRS];
10970                         int n_entries, rem, i = 0;
10971
10972                         if (!mac_attr) {
10973                                 err = -EINVAL;
10974                                 goto out;
10975                         }
10976
10977                         n_entries = validate_acl_mac_addrs(mac_attr);
10978                         if (n_entries <= 0) {
10979                                 err = -EINVAL;
10980                                 goto out;
10981                         }
10982
10983                         func->srf_num_macs = n_entries;
10984                         func->srf_macs =
10985                                 kzalloc(sizeof(*func->srf_macs) * n_entries,
10986                                         GFP_KERNEL);
10987                         if (!func->srf_macs) {
10988                                 err = -ENOMEM;
10989                                 goto out;
10990                         }
10991
10992                         nla_for_each_nested(attr, mac_attr, rem)
10993                                 memcpy(func->srf_macs[i++].addr, nla_data(attr),
10994                                        sizeof(*func->srf_macs));
10995                 }
10996         }
10997
10998         if (tb[NL80211_NAN_FUNC_TX_MATCH_FILTER]) {
10999                 err = handle_nan_filter(tb[NL80211_NAN_FUNC_TX_MATCH_FILTER],
11000                                         func, true);
11001                 if (err)
11002                         goto out;
11003         }
11004
11005         if (tb[NL80211_NAN_FUNC_RX_MATCH_FILTER]) {
11006                 err = handle_nan_filter(tb[NL80211_NAN_FUNC_RX_MATCH_FILTER],
11007                                         func, false);
11008                 if (err)
11009                         goto out;
11010         }
11011
11012         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11013         if (!msg) {
11014                 err = -ENOMEM;
11015                 goto out;
11016         }
11017
11018         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
11019                              NL80211_CMD_ADD_NAN_FUNCTION);
11020         /* This can't really happen - we just allocated 4KB */
11021         if (WARN_ON(!hdr)) {
11022                 err = -ENOMEM;
11023                 goto out;
11024         }
11025
11026         err = rdev_add_nan_func(rdev, wdev, func);
11027 out:
11028         if (err < 0) {
11029                 cfg80211_free_nan_func(func);
11030                 nlmsg_free(msg);
11031                 return err;
11032         }
11033
11034         /* propagate the instance id and cookie to userspace  */
11035         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, func->cookie,
11036                               NL80211_ATTR_PAD))
11037                 goto nla_put_failure;
11038
11039         func_attr = nla_nest_start(msg, NL80211_ATTR_NAN_FUNC);
11040         if (!func_attr)
11041                 goto nla_put_failure;
11042
11043         if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID,
11044                        func->instance_id))
11045                 goto nla_put_failure;
11046
11047         nla_nest_end(msg, func_attr);
11048
11049         genlmsg_end(msg, hdr);
11050         return genlmsg_reply(msg, info);
11051
11052 nla_put_failure:
11053         nlmsg_free(msg);
11054         return -ENOBUFS;
11055 }
11056
11057 static int nl80211_nan_del_func(struct sk_buff *skb,
11058                                struct genl_info *info)
11059 {
11060         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11061         struct wireless_dev *wdev = info->user_ptr[1];
11062         u64 cookie;
11063
11064         if (wdev->iftype != NL80211_IFTYPE_NAN)
11065                 return -EOPNOTSUPP;
11066
11067         if (!wdev_running(wdev))
11068                 return -ENOTCONN;
11069
11070         if (!info->attrs[NL80211_ATTR_COOKIE])
11071                 return -EINVAL;
11072
11073         if (wdev->owner_nlportid &&
11074             wdev->owner_nlportid != info->snd_portid)
11075                 return -ENOTCONN;
11076
11077         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
11078
11079         rdev_del_nan_func(rdev, wdev, cookie);
11080
11081         return 0;
11082 }
11083
11084 static int nl80211_nan_change_config(struct sk_buff *skb,
11085                                      struct genl_info *info)
11086 {
11087         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11088         struct wireless_dev *wdev = info->user_ptr[1];
11089         struct cfg80211_nan_conf conf = {};
11090         u32 changed = 0;
11091
11092         if (wdev->iftype != NL80211_IFTYPE_NAN)
11093                 return -EOPNOTSUPP;
11094
11095         if (!wdev_running(wdev))
11096                 return -ENOTCONN;
11097
11098         if (info->attrs[NL80211_ATTR_NAN_MASTER_PREF]) {
11099                 conf.master_pref =
11100                         nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]);
11101                 if (conf.master_pref <= 1 || conf.master_pref == 255)
11102                         return -EINVAL;
11103
11104                 changed |= CFG80211_NAN_CONF_CHANGED_PREF;
11105         }
11106
11107         if (info->attrs[NL80211_ATTR_NAN_DUAL]) {
11108                 conf.dual = nla_get_u8(info->attrs[NL80211_ATTR_NAN_DUAL]);
11109                 changed |= CFG80211_NAN_CONF_CHANGED_DUAL;
11110         }
11111
11112         if (!changed)
11113                 return -EINVAL;
11114
11115         return rdev_nan_change_conf(rdev, wdev, &conf, changed);
11116 }
11117
11118 void cfg80211_nan_match(struct wireless_dev *wdev,
11119                         struct cfg80211_nan_match_params *match, gfp_t gfp)
11120 {
11121         struct wiphy *wiphy = wdev->wiphy;
11122         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11123         struct nlattr *match_attr, *local_func_attr, *peer_func_attr;
11124         struct sk_buff *msg;
11125         void *hdr;
11126
11127         if (WARN_ON(!match->inst_id || !match->peer_inst_id || !match->addr))
11128                 return;
11129
11130         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11131         if (!msg)
11132                 return;
11133
11134         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NAN_MATCH);
11135         if (!hdr) {
11136                 nlmsg_free(msg);
11137                 return;
11138         }
11139
11140         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11141             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11142                                          wdev->netdev->ifindex)) ||
11143             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
11144                               NL80211_ATTR_PAD))
11145                 goto nla_put_failure;
11146
11147         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, match->cookie,
11148                               NL80211_ATTR_PAD) ||
11149             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, match->addr))
11150                 goto nla_put_failure;
11151
11152         match_attr = nla_nest_start(msg, NL80211_ATTR_NAN_MATCH);
11153         if (!match_attr)
11154                 goto nla_put_failure;
11155
11156         local_func_attr = nla_nest_start(msg, NL80211_NAN_MATCH_FUNC_LOCAL);
11157         if (!local_func_attr)
11158                 goto nla_put_failure;
11159
11160         if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->inst_id))
11161                 goto nla_put_failure;
11162
11163         nla_nest_end(msg, local_func_attr);
11164
11165         peer_func_attr = nla_nest_start(msg, NL80211_NAN_MATCH_FUNC_PEER);
11166         if (!peer_func_attr)
11167                 goto nla_put_failure;
11168
11169         if (nla_put_u8(msg, NL80211_NAN_FUNC_TYPE, match->type) ||
11170             nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->peer_inst_id))
11171                 goto nla_put_failure;
11172
11173         if (match->info && match->info_len &&
11174             nla_put(msg, NL80211_NAN_FUNC_SERVICE_INFO, match->info_len,
11175                     match->info))
11176                 goto nla_put_failure;
11177
11178         nla_nest_end(msg, peer_func_attr);
11179         nla_nest_end(msg, match_attr);
11180         genlmsg_end(msg, hdr);
11181
11182         if (!wdev->owner_nlportid)
11183                 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
11184                                         msg, 0, NL80211_MCGRP_NAN, gfp);
11185         else
11186                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
11187                                 wdev->owner_nlportid);
11188
11189         return;
11190
11191 nla_put_failure:
11192         nlmsg_free(msg);
11193 }
11194 EXPORT_SYMBOL(cfg80211_nan_match);
11195
11196 void cfg80211_nan_func_terminated(struct wireless_dev *wdev,
11197                                   u8 inst_id,
11198                                   enum nl80211_nan_func_term_reason reason,
11199                                   u64 cookie, gfp_t gfp)
11200 {
11201         struct wiphy *wiphy = wdev->wiphy;
11202         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11203         struct sk_buff *msg;
11204         struct nlattr *func_attr;
11205         void *hdr;
11206
11207         if (WARN_ON(!inst_id))
11208                 return;
11209
11210         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11211         if (!msg)
11212                 return;
11213
11214         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_NAN_FUNCTION);
11215         if (!hdr) {
11216                 nlmsg_free(msg);
11217                 return;
11218         }
11219
11220         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11221             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11222                                          wdev->netdev->ifindex)) ||
11223             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
11224                               NL80211_ATTR_PAD))
11225                 goto nla_put_failure;
11226
11227         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
11228                               NL80211_ATTR_PAD))
11229                 goto nla_put_failure;
11230
11231         func_attr = nla_nest_start(msg, NL80211_ATTR_NAN_FUNC);
11232         if (!func_attr)
11233                 goto nla_put_failure;
11234
11235         if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, inst_id) ||
11236             nla_put_u8(msg, NL80211_NAN_FUNC_TERM_REASON, reason))
11237                 goto nla_put_failure;
11238
11239         nla_nest_end(msg, func_attr);
11240         genlmsg_end(msg, hdr);
11241
11242         if (!wdev->owner_nlportid)
11243                 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
11244                                         msg, 0, NL80211_MCGRP_NAN, gfp);
11245         else
11246                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
11247                                 wdev->owner_nlportid);
11248
11249         return;
11250
11251 nla_put_failure:
11252         nlmsg_free(msg);
11253 }
11254 EXPORT_SYMBOL(cfg80211_nan_func_terminated);
11255
11256 static int nl80211_get_protocol_features(struct sk_buff *skb,
11257                                          struct genl_info *info)
11258 {
11259         void *hdr;
11260         struct sk_buff *msg;
11261
11262         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11263         if (!msg)
11264                 return -ENOMEM;
11265
11266         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
11267                              NL80211_CMD_GET_PROTOCOL_FEATURES);
11268         if (!hdr)
11269                 goto nla_put_failure;
11270
11271         if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES,
11272                         NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP))
11273                 goto nla_put_failure;
11274
11275         genlmsg_end(msg, hdr);
11276         return genlmsg_reply(msg, info);
11277
11278  nla_put_failure:
11279         kfree_skb(msg);
11280         return -ENOBUFS;
11281 }
11282
11283 static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info)
11284 {
11285         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11286         struct cfg80211_update_ft_ies_params ft_params;
11287         struct net_device *dev = info->user_ptr[1];
11288
11289         if (!rdev->ops->update_ft_ies)
11290                 return -EOPNOTSUPP;
11291
11292         if (!info->attrs[NL80211_ATTR_MDID] ||
11293             !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
11294                 return -EINVAL;
11295
11296         memset(&ft_params, 0, sizeof(ft_params));
11297         ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]);
11298         ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
11299         ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
11300
11301         return rdev_update_ft_ies(rdev, dev, &ft_params);
11302 }
11303
11304 static int nl80211_crit_protocol_start(struct sk_buff *skb,
11305                                        struct genl_info *info)
11306 {
11307         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11308         struct wireless_dev *wdev = info->user_ptr[1];
11309         enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC;
11310         u16 duration;
11311         int ret;
11312
11313         if (!rdev->ops->crit_proto_start)
11314                 return -EOPNOTSUPP;
11315
11316         if (WARN_ON(!rdev->ops->crit_proto_stop))
11317                 return -EINVAL;
11318
11319         if (rdev->crit_proto_nlportid)
11320                 return -EBUSY;
11321
11322         /* determine protocol if provided */
11323         if (info->attrs[NL80211_ATTR_CRIT_PROT_ID])
11324                 proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]);
11325
11326         if (proto >= NUM_NL80211_CRIT_PROTO)
11327                 return -EINVAL;
11328
11329         /* timeout must be provided */
11330         if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION])
11331                 return -EINVAL;
11332
11333         duration =
11334                 nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]);
11335
11336         if (duration > NL80211_CRIT_PROTO_MAX_DURATION)
11337                 return -ERANGE;
11338
11339         ret = rdev_crit_proto_start(rdev, wdev, proto, duration);
11340         if (!ret)
11341                 rdev->crit_proto_nlportid = info->snd_portid;
11342
11343         return ret;
11344 }
11345
11346 static int nl80211_crit_protocol_stop(struct sk_buff *skb,
11347                                       struct genl_info *info)
11348 {
11349         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11350         struct wireless_dev *wdev = info->user_ptr[1];
11351
11352         if (!rdev->ops->crit_proto_stop)
11353                 return -EOPNOTSUPP;
11354
11355         if (rdev->crit_proto_nlportid) {
11356                 rdev->crit_proto_nlportid = 0;
11357                 rdev_crit_proto_stop(rdev, wdev);
11358         }
11359         return 0;
11360 }
11361
11362 static int nl80211_vendor_cmd(struct sk_buff *skb, struct genl_info *info)
11363 {
11364         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11365         struct wireless_dev *wdev =
11366                 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
11367         int i, err;
11368         u32 vid, subcmd;
11369
11370         if (!rdev->wiphy.vendor_commands)
11371                 return -EOPNOTSUPP;
11372
11373         if (IS_ERR(wdev)) {
11374                 err = PTR_ERR(wdev);
11375                 if (err != -EINVAL)
11376                         return err;
11377                 wdev = NULL;
11378         } else if (wdev->wiphy != &rdev->wiphy) {
11379                 return -EINVAL;
11380         }
11381
11382         if (!info->attrs[NL80211_ATTR_VENDOR_ID] ||
11383             !info->attrs[NL80211_ATTR_VENDOR_SUBCMD])
11384                 return -EINVAL;
11385
11386         vid = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_ID]);
11387         subcmd = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_SUBCMD]);
11388         for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
11389                 const struct wiphy_vendor_command *vcmd;
11390                 void *data = NULL;
11391                 int len = 0;
11392
11393                 vcmd = &rdev->wiphy.vendor_commands[i];
11394
11395                 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
11396                         continue;
11397
11398                 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
11399                                    WIPHY_VENDOR_CMD_NEED_NETDEV)) {
11400                         if (!wdev)
11401                                 return -EINVAL;
11402                         if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
11403                             !wdev->netdev)
11404                                 return -EINVAL;
11405
11406                         if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
11407                                 if (!wdev_running(wdev))
11408                                         return -ENETDOWN;
11409                         }
11410
11411                         if (!vcmd->doit)
11412                                 return -EOPNOTSUPP;
11413                 } else {
11414                         wdev = NULL;
11415                 }
11416
11417                 if (info->attrs[NL80211_ATTR_VENDOR_DATA]) {
11418                         data = nla_data(info->attrs[NL80211_ATTR_VENDOR_DATA]);
11419                         len = nla_len(info->attrs[NL80211_ATTR_VENDOR_DATA]);
11420                 }
11421
11422                 rdev->cur_cmd_info = info;
11423                 err = rdev->wiphy.vendor_commands[i].doit(&rdev->wiphy, wdev,
11424                                                           data, len);
11425                 rdev->cur_cmd_info = NULL;
11426                 return err;
11427         }
11428
11429         return -EOPNOTSUPP;
11430 }
11431
11432 static int nl80211_prepare_vendor_dump(struct sk_buff *skb,
11433                                        struct netlink_callback *cb,
11434                                        struct cfg80211_registered_device **rdev,
11435                                        struct wireless_dev **wdev)
11436 {
11437         struct nlattr **attrbuf = genl_family_attrbuf(&nl80211_fam);
11438         u32 vid, subcmd;
11439         unsigned int i;
11440         int vcmd_idx = -1;
11441         int err;
11442         void *data = NULL;
11443         unsigned int data_len = 0;
11444
11445         rtnl_lock();
11446
11447         if (cb->args[0]) {
11448                 /* subtract the 1 again here */
11449                 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
11450                 struct wireless_dev *tmp;
11451
11452                 if (!wiphy) {
11453                         err = -ENODEV;
11454                         goto out_unlock;
11455                 }
11456                 *rdev = wiphy_to_rdev(wiphy);
11457                 *wdev = NULL;
11458
11459                 if (cb->args[1]) {
11460                         list_for_each_entry(tmp, &wiphy->wdev_list, list) {
11461                                 if (tmp->identifier == cb->args[1] - 1) {
11462                                         *wdev = tmp;
11463                                         break;
11464                                 }
11465                         }
11466                 }
11467
11468                 /* keep rtnl locked in successful case */
11469                 return 0;
11470         }
11471
11472         err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
11473                           attrbuf, nl80211_fam.maxattr, nl80211_policy);
11474         if (err)
11475                 goto out_unlock;
11476
11477         if (!attrbuf[NL80211_ATTR_VENDOR_ID] ||
11478             !attrbuf[NL80211_ATTR_VENDOR_SUBCMD]) {
11479                 err = -EINVAL;
11480                 goto out_unlock;
11481         }
11482
11483         *wdev = __cfg80211_wdev_from_attrs(sock_net(skb->sk), attrbuf);
11484         if (IS_ERR(*wdev))
11485                 *wdev = NULL;
11486
11487         *rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf);
11488         if (IS_ERR(*rdev)) {
11489                 err = PTR_ERR(*rdev);
11490                 goto out_unlock;
11491         }
11492
11493         vid = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_ID]);
11494         subcmd = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_SUBCMD]);
11495
11496         for (i = 0; i < (*rdev)->wiphy.n_vendor_commands; i++) {
11497                 const struct wiphy_vendor_command *vcmd;
11498
11499                 vcmd = &(*rdev)->wiphy.vendor_commands[i];
11500
11501                 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
11502                         continue;
11503
11504                 if (!vcmd->dumpit) {
11505                         err = -EOPNOTSUPP;
11506                         goto out_unlock;
11507                 }
11508
11509                 vcmd_idx = i;
11510                 break;
11511         }
11512
11513         if (vcmd_idx < 0) {
11514                 err = -EOPNOTSUPP;
11515                 goto out_unlock;
11516         }
11517
11518         if (attrbuf[NL80211_ATTR_VENDOR_DATA]) {
11519                 data = nla_data(attrbuf[NL80211_ATTR_VENDOR_DATA]);
11520                 data_len = nla_len(attrbuf[NL80211_ATTR_VENDOR_DATA]);
11521         }
11522
11523         /* 0 is the first index - add 1 to parse only once */
11524         cb->args[0] = (*rdev)->wiphy_idx + 1;
11525         /* add 1 to know if it was NULL */
11526         cb->args[1] = *wdev ? (*wdev)->identifier + 1 : 0;
11527         cb->args[2] = vcmd_idx;
11528         cb->args[3] = (unsigned long)data;
11529         cb->args[4] = data_len;
11530
11531         /* keep rtnl locked in successful case */
11532         return 0;
11533  out_unlock:
11534         rtnl_unlock();
11535         return err;
11536 }
11537
11538 static int nl80211_vendor_cmd_dump(struct sk_buff *skb,
11539                                    struct netlink_callback *cb)
11540 {
11541         struct cfg80211_registered_device *rdev;
11542         struct wireless_dev *wdev;
11543         unsigned int vcmd_idx;
11544         const struct wiphy_vendor_command *vcmd;
11545         void *data;
11546         int data_len;
11547         int err;
11548         struct nlattr *vendor_data;
11549
11550         err = nl80211_prepare_vendor_dump(skb, cb, &rdev, &wdev);
11551         if (err)
11552                 return err;
11553
11554         vcmd_idx = cb->args[2];
11555         data = (void *)cb->args[3];
11556         data_len = cb->args[4];
11557         vcmd = &rdev->wiphy.vendor_commands[vcmd_idx];
11558
11559         if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
11560                            WIPHY_VENDOR_CMD_NEED_NETDEV)) {
11561                 if (!wdev)
11562                         return -EINVAL;
11563                 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
11564                     !wdev->netdev)
11565                         return -EINVAL;
11566
11567                 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
11568                         if (!wdev_running(wdev))
11569                                 return -ENETDOWN;
11570                 }
11571         }
11572
11573         while (1) {
11574                 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
11575                                            cb->nlh->nlmsg_seq, NLM_F_MULTI,
11576                                            NL80211_CMD_VENDOR);
11577                 if (!hdr)
11578                         break;
11579
11580                 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11581                     (wdev && nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
11582                                                wdev_id(wdev),
11583                                                NL80211_ATTR_PAD))) {
11584                         genlmsg_cancel(skb, hdr);
11585                         break;
11586                 }
11587
11588                 vendor_data = nla_nest_start(skb, NL80211_ATTR_VENDOR_DATA);
11589                 if (!vendor_data) {
11590                         genlmsg_cancel(skb, hdr);
11591                         break;
11592                 }
11593
11594                 err = vcmd->dumpit(&rdev->wiphy, wdev, skb, data, data_len,
11595                                    (unsigned long *)&cb->args[5]);
11596                 nla_nest_end(skb, vendor_data);
11597
11598                 if (err == -ENOBUFS || err == -ENOENT) {
11599                         genlmsg_cancel(skb, hdr);
11600                         break;
11601                 } else if (err) {
11602                         genlmsg_cancel(skb, hdr);
11603                         goto out;
11604                 }
11605
11606                 genlmsg_end(skb, hdr);
11607         }
11608
11609         err = skb->len;
11610  out:
11611         rtnl_unlock();
11612         return err;
11613 }
11614
11615 struct sk_buff *__cfg80211_alloc_reply_skb(struct wiphy *wiphy,
11616                                            enum nl80211_commands cmd,
11617                                            enum nl80211_attrs attr,
11618                                            int approxlen)
11619 {
11620         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11621
11622         if (WARN_ON(!rdev->cur_cmd_info))
11623                 return NULL;
11624
11625         return __cfg80211_alloc_vendor_skb(rdev, NULL, approxlen,
11626                                            rdev->cur_cmd_info->snd_portid,
11627                                            rdev->cur_cmd_info->snd_seq,
11628                                            cmd, attr, NULL, GFP_KERNEL);
11629 }
11630 EXPORT_SYMBOL(__cfg80211_alloc_reply_skb);
11631
11632 int cfg80211_vendor_cmd_reply(struct sk_buff *skb)
11633 {
11634         struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
11635         void *hdr = ((void **)skb->cb)[1];
11636         struct nlattr *data = ((void **)skb->cb)[2];
11637
11638         /* clear CB data for netlink core to own from now on */
11639         memset(skb->cb, 0, sizeof(skb->cb));
11640
11641         if (WARN_ON(!rdev->cur_cmd_info)) {
11642                 kfree_skb(skb);
11643                 return -EINVAL;
11644         }
11645
11646         nla_nest_end(skb, data);
11647         genlmsg_end(skb, hdr);
11648         return genlmsg_reply(skb, rdev->cur_cmd_info);
11649 }
11650 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_reply);
11651
11652 static int nl80211_set_qos_map(struct sk_buff *skb,
11653                                struct genl_info *info)
11654 {
11655         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11656         struct cfg80211_qos_map *qos_map = NULL;
11657         struct net_device *dev = info->user_ptr[1];
11658         u8 *pos, len, num_des, des_len, des;
11659         int ret;
11660
11661         if (!rdev->ops->set_qos_map)
11662                 return -EOPNOTSUPP;
11663
11664         if (info->attrs[NL80211_ATTR_QOS_MAP]) {
11665                 pos = nla_data(info->attrs[NL80211_ATTR_QOS_MAP]);
11666                 len = nla_len(info->attrs[NL80211_ATTR_QOS_MAP]);
11667
11668                 if (len % 2 || len < IEEE80211_QOS_MAP_LEN_MIN ||
11669                     len > IEEE80211_QOS_MAP_LEN_MAX)
11670                         return -EINVAL;
11671
11672                 qos_map = kzalloc(sizeof(struct cfg80211_qos_map), GFP_KERNEL);
11673                 if (!qos_map)
11674                         return -ENOMEM;
11675
11676                 num_des = (len - IEEE80211_QOS_MAP_LEN_MIN) >> 1;
11677                 if (num_des) {
11678                         des_len = num_des *
11679                                 sizeof(struct cfg80211_dscp_exception);
11680                         memcpy(qos_map->dscp_exception, pos, des_len);
11681                         qos_map->num_des = num_des;
11682                         for (des = 0; des < num_des; des++) {
11683                                 if (qos_map->dscp_exception[des].up > 7) {
11684                                         kfree(qos_map);
11685                                         return -EINVAL;
11686                                 }
11687                         }
11688                         pos += des_len;
11689                 }
11690                 memcpy(qos_map->up, pos, IEEE80211_QOS_MAP_LEN_MIN);
11691         }
11692
11693         wdev_lock(dev->ieee80211_ptr);
11694         ret = nl80211_key_allowed(dev->ieee80211_ptr);
11695         if (!ret)
11696                 ret = rdev_set_qos_map(rdev, dev, qos_map);
11697         wdev_unlock(dev->ieee80211_ptr);
11698
11699         kfree(qos_map);
11700         return ret;
11701 }
11702
11703 static int nl80211_add_tx_ts(struct sk_buff *skb, struct genl_info *info)
11704 {
11705         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11706         struct net_device *dev = info->user_ptr[1];
11707         struct wireless_dev *wdev = dev->ieee80211_ptr;
11708         const u8 *peer;
11709         u8 tsid, up;
11710         u16 admitted_time = 0;
11711         int err;
11712
11713         if (!(rdev->wiphy.features & NL80211_FEATURE_SUPPORTS_WMM_ADMISSION))
11714                 return -EOPNOTSUPP;
11715
11716         if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC] ||
11717             !info->attrs[NL80211_ATTR_USER_PRIO])
11718                 return -EINVAL;
11719
11720         tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
11721         if (tsid >= IEEE80211_NUM_TIDS)
11722                 return -EINVAL;
11723
11724         up = nla_get_u8(info->attrs[NL80211_ATTR_USER_PRIO]);
11725         if (up >= IEEE80211_NUM_UPS)
11726                 return -EINVAL;
11727
11728         /* WMM uses TIDs 0-7 even for TSPEC */
11729         if (tsid >= IEEE80211_FIRST_TSPEC_TSID) {
11730                 /* TODO: handle 802.11 TSPEC/admission control
11731                  * need more attributes for that (e.g. BA session requirement);
11732                  * change the WMM adminssion test above to allow both then
11733                  */
11734                 return -EINVAL;
11735         }
11736
11737         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
11738
11739         if (info->attrs[NL80211_ATTR_ADMITTED_TIME]) {
11740                 admitted_time =
11741                         nla_get_u16(info->attrs[NL80211_ATTR_ADMITTED_TIME]);
11742                 if (!admitted_time)
11743                         return -EINVAL;
11744         }
11745
11746         wdev_lock(wdev);
11747         switch (wdev->iftype) {
11748         case NL80211_IFTYPE_STATION:
11749         case NL80211_IFTYPE_P2P_CLIENT:
11750                 if (wdev->current_bss)
11751                         break;
11752                 err = -ENOTCONN;
11753                 goto out;
11754         default:
11755                 err = -EOPNOTSUPP;
11756                 goto out;
11757         }
11758
11759         err = rdev_add_tx_ts(rdev, dev, tsid, peer, up, admitted_time);
11760
11761  out:
11762         wdev_unlock(wdev);
11763         return err;
11764 }
11765
11766 static int nl80211_del_tx_ts(struct sk_buff *skb, struct genl_info *info)
11767 {
11768         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11769         struct net_device *dev = info->user_ptr[1];
11770         struct wireless_dev *wdev = dev->ieee80211_ptr;
11771         const u8 *peer;
11772         u8 tsid;
11773         int err;
11774
11775         if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC])
11776                 return -EINVAL;
11777
11778         tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
11779         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
11780
11781         wdev_lock(wdev);
11782         err = rdev_del_tx_ts(rdev, dev, tsid, peer);
11783         wdev_unlock(wdev);
11784
11785         return err;
11786 }
11787
11788 static int nl80211_tdls_channel_switch(struct sk_buff *skb,
11789                                        struct genl_info *info)
11790 {
11791         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11792         struct net_device *dev = info->user_ptr[1];
11793         struct wireless_dev *wdev = dev->ieee80211_ptr;
11794         struct cfg80211_chan_def chandef = {};
11795         const u8 *addr;
11796         u8 oper_class;
11797         int err;
11798
11799         if (!rdev->ops->tdls_channel_switch ||
11800             !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
11801                 return -EOPNOTSUPP;
11802
11803         switch (dev->ieee80211_ptr->iftype) {
11804         case NL80211_IFTYPE_STATION:
11805         case NL80211_IFTYPE_P2P_CLIENT:
11806                 break;
11807         default:
11808                 return -EOPNOTSUPP;
11809         }
11810
11811         if (!info->attrs[NL80211_ATTR_MAC] ||
11812             !info->attrs[NL80211_ATTR_OPER_CLASS])
11813                 return -EINVAL;
11814
11815         err = nl80211_parse_chandef(rdev, info, &chandef);
11816         if (err)
11817                 return err;
11818
11819         /*
11820          * Don't allow wide channels on the 2.4Ghz band, as per IEEE802.11-2012
11821          * section 10.22.6.2.1. Disallow 5/10Mhz channels as well for now, the
11822          * specification is not defined for them.
11823          */
11824         if (chandef.chan->band == NL80211_BAND_2GHZ &&
11825             chandef.width != NL80211_CHAN_WIDTH_20_NOHT &&
11826             chandef.width != NL80211_CHAN_WIDTH_20)
11827                 return -EINVAL;
11828
11829         /* we will be active on the TDLS link */
11830         if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
11831                                            wdev->iftype))
11832                 return -EINVAL;
11833
11834         /* don't allow switching to DFS channels */
11835         if (cfg80211_chandef_dfs_required(wdev->wiphy, &chandef, wdev->iftype))
11836                 return -EINVAL;
11837
11838         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
11839         oper_class = nla_get_u8(info->attrs[NL80211_ATTR_OPER_CLASS]);
11840
11841         wdev_lock(wdev);
11842         err = rdev_tdls_channel_switch(rdev, dev, addr, oper_class, &chandef);
11843         wdev_unlock(wdev);
11844
11845         return err;
11846 }
11847
11848 static int nl80211_tdls_cancel_channel_switch(struct sk_buff *skb,
11849                                               struct genl_info *info)
11850 {
11851         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11852         struct net_device *dev = info->user_ptr[1];
11853         struct wireless_dev *wdev = dev->ieee80211_ptr;
11854         const u8 *addr;
11855
11856         if (!rdev->ops->tdls_channel_switch ||
11857             !rdev->ops->tdls_cancel_channel_switch ||
11858             !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
11859                 return -EOPNOTSUPP;
11860
11861         switch (dev->ieee80211_ptr->iftype) {
11862         case NL80211_IFTYPE_STATION:
11863         case NL80211_IFTYPE_P2P_CLIENT:
11864                 break;
11865         default:
11866                 return -EOPNOTSUPP;
11867         }
11868
11869         if (!info->attrs[NL80211_ATTR_MAC])
11870                 return -EINVAL;
11871
11872         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
11873
11874         wdev_lock(wdev);
11875         rdev_tdls_cancel_channel_switch(rdev, dev, addr);
11876         wdev_unlock(wdev);
11877
11878         return 0;
11879 }
11880
11881 static int nl80211_set_multicast_to_unicast(struct sk_buff *skb,
11882                                             struct genl_info *info)
11883 {
11884         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11885         struct net_device *dev = info->user_ptr[1];
11886         struct wireless_dev *wdev = dev->ieee80211_ptr;
11887         const struct nlattr *nla;
11888         bool enabled;
11889
11890         if (!rdev->ops->set_multicast_to_unicast)
11891                 return -EOPNOTSUPP;
11892
11893         if (wdev->iftype != NL80211_IFTYPE_AP &&
11894             wdev->iftype != NL80211_IFTYPE_P2P_GO)
11895                 return -EOPNOTSUPP;
11896
11897         nla = info->attrs[NL80211_ATTR_MULTICAST_TO_UNICAST_ENABLED];
11898         enabled = nla_get_flag(nla);
11899
11900         return rdev_set_multicast_to_unicast(rdev, dev, enabled);
11901 }
11902
11903 #define NL80211_FLAG_NEED_WIPHY         0x01
11904 #define NL80211_FLAG_NEED_NETDEV        0x02
11905 #define NL80211_FLAG_NEED_RTNL          0x04
11906 #define NL80211_FLAG_CHECK_NETDEV_UP    0x08
11907 #define NL80211_FLAG_NEED_NETDEV_UP     (NL80211_FLAG_NEED_NETDEV |\
11908                                          NL80211_FLAG_CHECK_NETDEV_UP)
11909 #define NL80211_FLAG_NEED_WDEV          0x10
11910 /* If a netdev is associated, it must be UP, P2P must be started */
11911 #define NL80211_FLAG_NEED_WDEV_UP       (NL80211_FLAG_NEED_WDEV |\
11912                                          NL80211_FLAG_CHECK_NETDEV_UP)
11913 #define NL80211_FLAG_CLEAR_SKB          0x20
11914
11915 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
11916                             struct genl_info *info)
11917 {
11918         struct cfg80211_registered_device *rdev;
11919         struct wireless_dev *wdev;
11920         struct net_device *dev;
11921         bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
11922
11923         if (rtnl)
11924                 rtnl_lock();
11925
11926         if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
11927                 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
11928                 if (IS_ERR(rdev)) {
11929                         if (rtnl)
11930                                 rtnl_unlock();
11931                         return PTR_ERR(rdev);
11932                 }
11933                 info->user_ptr[0] = rdev;
11934         } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV ||
11935                    ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
11936                 ASSERT_RTNL();
11937
11938                 wdev = __cfg80211_wdev_from_attrs(genl_info_net(info),
11939                                                   info->attrs);
11940                 if (IS_ERR(wdev)) {
11941                         if (rtnl)
11942                                 rtnl_unlock();
11943                         return PTR_ERR(wdev);
11944                 }
11945
11946                 dev = wdev->netdev;
11947                 rdev = wiphy_to_rdev(wdev->wiphy);
11948
11949                 if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
11950                         if (!dev) {
11951                                 if (rtnl)
11952                                         rtnl_unlock();
11953                                 return -EINVAL;
11954                         }
11955
11956                         info->user_ptr[1] = dev;
11957                 } else {
11958                         info->user_ptr[1] = wdev;
11959                 }
11960
11961                 if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
11962                     !wdev_running(wdev)) {
11963                         if (rtnl)
11964                                 rtnl_unlock();
11965                         return -ENETDOWN;
11966                 }
11967
11968                 if (dev)
11969                         dev_hold(dev);
11970
11971                 info->user_ptr[0] = rdev;
11972         }
11973
11974         return 0;
11975 }
11976
11977 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
11978                               struct genl_info *info)
11979 {
11980         if (info->user_ptr[1]) {
11981                 if (ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
11982                         struct wireless_dev *wdev = info->user_ptr[1];
11983
11984                         if (wdev->netdev)
11985                                 dev_put(wdev->netdev);
11986                 } else {
11987                         dev_put(info->user_ptr[1]);
11988                 }
11989         }
11990
11991         if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
11992                 rtnl_unlock();
11993
11994         /* If needed, clear the netlink message payload from the SKB
11995          * as it might contain key data that shouldn't stick around on
11996          * the heap after the SKB is freed. The netlink message header
11997          * is still needed for further processing, so leave it intact.
11998          */
11999         if (ops->internal_flags & NL80211_FLAG_CLEAR_SKB) {
12000                 struct nlmsghdr *nlh = nlmsg_hdr(skb);
12001
12002                 memset(nlmsg_data(nlh), 0, nlmsg_len(nlh));
12003         }
12004 }
12005
12006 static const struct genl_ops nl80211_ops[] = {
12007         {
12008                 .cmd = NL80211_CMD_GET_WIPHY,
12009                 .doit = nl80211_get_wiphy,
12010                 .dumpit = nl80211_dump_wiphy,
12011                 .done = nl80211_dump_wiphy_done,
12012                 .policy = nl80211_policy,
12013                 /* can be retrieved by unprivileged users */
12014                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
12015                                   NL80211_FLAG_NEED_RTNL,
12016         },
12017         {
12018                 .cmd = NL80211_CMD_SET_WIPHY,
12019                 .doit = nl80211_set_wiphy,
12020                 .policy = nl80211_policy,
12021                 .flags = GENL_UNS_ADMIN_PERM,
12022                 .internal_flags = NL80211_FLAG_NEED_RTNL,
12023         },
12024         {
12025                 .cmd = NL80211_CMD_GET_INTERFACE,
12026                 .doit = nl80211_get_interface,
12027                 .dumpit = nl80211_dump_interface,
12028                 .policy = nl80211_policy,
12029                 /* can be retrieved by unprivileged users */
12030                 .internal_flags = NL80211_FLAG_NEED_WDEV |
12031                                   NL80211_FLAG_NEED_RTNL,
12032         },
12033         {
12034                 .cmd = NL80211_CMD_SET_INTERFACE,
12035                 .doit = nl80211_set_interface,
12036                 .policy = nl80211_policy,
12037                 .flags = GENL_UNS_ADMIN_PERM,
12038                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12039                                   NL80211_FLAG_NEED_RTNL,
12040         },
12041         {
12042                 .cmd = NL80211_CMD_NEW_INTERFACE,
12043                 .doit = nl80211_new_interface,
12044                 .policy = nl80211_policy,
12045                 .flags = GENL_UNS_ADMIN_PERM,
12046                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
12047                                   NL80211_FLAG_NEED_RTNL,
12048         },
12049         {
12050                 .cmd = NL80211_CMD_DEL_INTERFACE,
12051                 .doit = nl80211_del_interface,
12052                 .policy = nl80211_policy,
12053                 .flags = GENL_UNS_ADMIN_PERM,
12054                 .internal_flags = NL80211_FLAG_NEED_WDEV |
12055                                   NL80211_FLAG_NEED_RTNL,
12056         },
12057         {
12058                 .cmd = NL80211_CMD_GET_KEY,
12059                 .doit = nl80211_get_key,
12060                 .policy = nl80211_policy,
12061                 .flags = GENL_UNS_ADMIN_PERM,
12062                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12063                                   NL80211_FLAG_NEED_RTNL,
12064         },
12065         {
12066                 .cmd = NL80211_CMD_SET_KEY,
12067                 .doit = nl80211_set_key,
12068                 .policy = nl80211_policy,
12069                 .flags = GENL_UNS_ADMIN_PERM,
12070                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12071                                   NL80211_FLAG_NEED_RTNL |
12072                                   NL80211_FLAG_CLEAR_SKB,
12073         },
12074         {
12075                 .cmd = NL80211_CMD_NEW_KEY,
12076                 .doit = nl80211_new_key,
12077                 .policy = nl80211_policy,
12078                 .flags = GENL_UNS_ADMIN_PERM,
12079                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12080                                   NL80211_FLAG_NEED_RTNL |
12081                                   NL80211_FLAG_CLEAR_SKB,
12082         },
12083         {
12084                 .cmd = NL80211_CMD_DEL_KEY,
12085                 .doit = nl80211_del_key,
12086                 .policy = nl80211_policy,
12087                 .flags = GENL_UNS_ADMIN_PERM,
12088                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12089                                   NL80211_FLAG_NEED_RTNL,
12090         },
12091         {
12092                 .cmd = NL80211_CMD_SET_BEACON,
12093                 .policy = nl80211_policy,
12094                 .flags = GENL_UNS_ADMIN_PERM,
12095                 .doit = nl80211_set_beacon,
12096                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12097                                   NL80211_FLAG_NEED_RTNL,
12098         },
12099         {
12100                 .cmd = NL80211_CMD_START_AP,
12101                 .policy = nl80211_policy,
12102                 .flags = GENL_UNS_ADMIN_PERM,
12103                 .doit = nl80211_start_ap,
12104                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12105                                   NL80211_FLAG_NEED_RTNL,
12106         },
12107         {
12108                 .cmd = NL80211_CMD_STOP_AP,
12109                 .policy = nl80211_policy,
12110                 .flags = GENL_UNS_ADMIN_PERM,
12111                 .doit = nl80211_stop_ap,
12112                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12113                                   NL80211_FLAG_NEED_RTNL,
12114         },
12115         {
12116                 .cmd = NL80211_CMD_GET_STATION,
12117                 .doit = nl80211_get_station,
12118                 .dumpit = nl80211_dump_station,
12119                 .policy = nl80211_policy,
12120                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12121                                   NL80211_FLAG_NEED_RTNL,
12122         },
12123         {
12124                 .cmd = NL80211_CMD_SET_STATION,
12125                 .doit = nl80211_set_station,
12126                 .policy = nl80211_policy,
12127                 .flags = GENL_UNS_ADMIN_PERM,
12128                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12129                                   NL80211_FLAG_NEED_RTNL,
12130         },
12131         {
12132                 .cmd = NL80211_CMD_NEW_STATION,
12133                 .doit = nl80211_new_station,
12134                 .policy = nl80211_policy,
12135                 .flags = GENL_UNS_ADMIN_PERM,
12136                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12137                                   NL80211_FLAG_NEED_RTNL,
12138         },
12139         {
12140                 .cmd = NL80211_CMD_DEL_STATION,
12141                 .doit = nl80211_del_station,
12142                 .policy = nl80211_policy,
12143                 .flags = GENL_UNS_ADMIN_PERM,
12144                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12145                                   NL80211_FLAG_NEED_RTNL,
12146         },
12147         {
12148                 .cmd = NL80211_CMD_GET_MPATH,
12149                 .doit = nl80211_get_mpath,
12150                 .dumpit = nl80211_dump_mpath,
12151                 .policy = nl80211_policy,
12152                 .flags = GENL_UNS_ADMIN_PERM,
12153                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12154                                   NL80211_FLAG_NEED_RTNL,
12155         },
12156         {
12157                 .cmd = NL80211_CMD_GET_MPP,
12158                 .doit = nl80211_get_mpp,
12159                 .dumpit = nl80211_dump_mpp,
12160                 .policy = nl80211_policy,
12161                 .flags = GENL_UNS_ADMIN_PERM,
12162                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12163                                   NL80211_FLAG_NEED_RTNL,
12164         },
12165         {
12166                 .cmd = NL80211_CMD_SET_MPATH,
12167                 .doit = nl80211_set_mpath,
12168                 .policy = nl80211_policy,
12169                 .flags = GENL_UNS_ADMIN_PERM,
12170                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12171                                   NL80211_FLAG_NEED_RTNL,
12172         },
12173         {
12174                 .cmd = NL80211_CMD_NEW_MPATH,
12175                 .doit = nl80211_new_mpath,
12176                 .policy = nl80211_policy,
12177                 .flags = GENL_UNS_ADMIN_PERM,
12178                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12179                                   NL80211_FLAG_NEED_RTNL,
12180         },
12181         {
12182                 .cmd = NL80211_CMD_DEL_MPATH,
12183                 .doit = nl80211_del_mpath,
12184                 .policy = nl80211_policy,
12185                 .flags = GENL_UNS_ADMIN_PERM,
12186                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12187                                   NL80211_FLAG_NEED_RTNL,
12188         },
12189         {
12190                 .cmd = NL80211_CMD_SET_BSS,
12191                 .doit = nl80211_set_bss,
12192                 .policy = nl80211_policy,
12193                 .flags = GENL_UNS_ADMIN_PERM,
12194                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12195                                   NL80211_FLAG_NEED_RTNL,
12196         },
12197         {
12198                 .cmd = NL80211_CMD_GET_REG,
12199                 .doit = nl80211_get_reg_do,
12200                 .dumpit = nl80211_get_reg_dump,
12201                 .policy = nl80211_policy,
12202                 .internal_flags = NL80211_FLAG_NEED_RTNL,
12203                 /* can be retrieved by unprivileged users */
12204         },
12205 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
12206         {
12207                 .cmd = NL80211_CMD_SET_REG,
12208                 .doit = nl80211_set_reg,
12209                 .policy = nl80211_policy,
12210                 .flags = GENL_ADMIN_PERM,
12211                 .internal_flags = NL80211_FLAG_NEED_RTNL,
12212         },
12213 #endif
12214         {
12215                 .cmd = NL80211_CMD_REQ_SET_REG,
12216                 .doit = nl80211_req_set_reg,
12217                 .policy = nl80211_policy,
12218                 .flags = GENL_ADMIN_PERM,
12219         },
12220         {
12221                 .cmd = NL80211_CMD_GET_MESH_CONFIG,
12222                 .doit = nl80211_get_mesh_config,
12223                 .policy = nl80211_policy,
12224                 /* can be retrieved by unprivileged users */
12225                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12226                                   NL80211_FLAG_NEED_RTNL,
12227         },
12228         {
12229                 .cmd = NL80211_CMD_SET_MESH_CONFIG,
12230                 .doit = nl80211_update_mesh_config,
12231                 .policy = nl80211_policy,
12232                 .flags = GENL_UNS_ADMIN_PERM,
12233                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12234                                   NL80211_FLAG_NEED_RTNL,
12235         },
12236         {
12237                 .cmd = NL80211_CMD_TRIGGER_SCAN,
12238                 .doit = nl80211_trigger_scan,
12239                 .policy = nl80211_policy,
12240                 .flags = GENL_UNS_ADMIN_PERM,
12241                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12242                                   NL80211_FLAG_NEED_RTNL,
12243         },
12244         {
12245                 .cmd = NL80211_CMD_ABORT_SCAN,
12246                 .doit = nl80211_abort_scan,
12247                 .policy = nl80211_policy,
12248                 .flags = GENL_UNS_ADMIN_PERM,
12249                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12250                                   NL80211_FLAG_NEED_RTNL,
12251         },
12252         {
12253                 .cmd = NL80211_CMD_GET_SCAN,
12254                 .policy = nl80211_policy,
12255                 .dumpit = nl80211_dump_scan,
12256         },
12257         {
12258                 .cmd = NL80211_CMD_START_SCHED_SCAN,
12259                 .doit = nl80211_start_sched_scan,
12260                 .policy = nl80211_policy,
12261                 .flags = GENL_UNS_ADMIN_PERM,
12262                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12263                                   NL80211_FLAG_NEED_RTNL,
12264         },
12265         {
12266                 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
12267                 .doit = nl80211_stop_sched_scan,
12268                 .policy = nl80211_policy,
12269                 .flags = GENL_UNS_ADMIN_PERM,
12270                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12271                                   NL80211_FLAG_NEED_RTNL,
12272         },
12273         {
12274                 .cmd = NL80211_CMD_AUTHENTICATE,
12275                 .doit = nl80211_authenticate,
12276                 .policy = nl80211_policy,
12277                 .flags = GENL_UNS_ADMIN_PERM,
12278                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12279                                   NL80211_FLAG_NEED_RTNL |
12280                                   NL80211_FLAG_CLEAR_SKB,
12281         },
12282         {
12283                 .cmd = NL80211_CMD_ASSOCIATE,
12284                 .doit = nl80211_associate,
12285                 .policy = nl80211_policy,
12286                 .flags = GENL_UNS_ADMIN_PERM,
12287                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12288                                   NL80211_FLAG_NEED_RTNL,
12289         },
12290         {
12291                 .cmd = NL80211_CMD_DEAUTHENTICATE,
12292                 .doit = nl80211_deauthenticate,
12293                 .policy = nl80211_policy,
12294                 .flags = GENL_UNS_ADMIN_PERM,
12295                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12296                                   NL80211_FLAG_NEED_RTNL,
12297         },
12298         {
12299                 .cmd = NL80211_CMD_DISASSOCIATE,
12300                 .doit = nl80211_disassociate,
12301                 .policy = nl80211_policy,
12302                 .flags = GENL_UNS_ADMIN_PERM,
12303                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12304                                   NL80211_FLAG_NEED_RTNL,
12305         },
12306         {
12307                 .cmd = NL80211_CMD_JOIN_IBSS,
12308                 .doit = nl80211_join_ibss,
12309                 .policy = nl80211_policy,
12310                 .flags = GENL_UNS_ADMIN_PERM,
12311                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12312                                   NL80211_FLAG_NEED_RTNL,
12313         },
12314         {
12315                 .cmd = NL80211_CMD_LEAVE_IBSS,
12316                 .doit = nl80211_leave_ibss,
12317                 .policy = nl80211_policy,
12318                 .flags = GENL_UNS_ADMIN_PERM,
12319                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12320                                   NL80211_FLAG_NEED_RTNL,
12321         },
12322 #ifdef CONFIG_NL80211_TESTMODE
12323         {
12324                 .cmd = NL80211_CMD_TESTMODE,
12325                 .doit = nl80211_testmode_do,
12326                 .dumpit = nl80211_testmode_dump,
12327                 .policy = nl80211_policy,
12328                 .flags = GENL_UNS_ADMIN_PERM,
12329                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
12330                                   NL80211_FLAG_NEED_RTNL,
12331         },
12332 #endif
12333         {
12334                 .cmd = NL80211_CMD_CONNECT,
12335                 .doit = nl80211_connect,
12336                 .policy = nl80211_policy,
12337                 .flags = GENL_UNS_ADMIN_PERM,
12338                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12339                                   NL80211_FLAG_NEED_RTNL,
12340         },
12341         {
12342                 .cmd = NL80211_CMD_UPDATE_CONNECT_PARAMS,
12343                 .doit = nl80211_update_connect_params,
12344                 .policy = nl80211_policy,
12345                 .flags = GENL_ADMIN_PERM,
12346                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12347                                   NL80211_FLAG_NEED_RTNL,
12348         },
12349         {
12350                 .cmd = NL80211_CMD_DISCONNECT,
12351                 .doit = nl80211_disconnect,
12352                 .policy = nl80211_policy,
12353                 .flags = GENL_UNS_ADMIN_PERM,
12354                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12355                                   NL80211_FLAG_NEED_RTNL,
12356         },
12357         {
12358                 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
12359                 .doit = nl80211_wiphy_netns,
12360                 .policy = nl80211_policy,
12361                 .flags = GENL_UNS_ADMIN_PERM,
12362                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
12363                                   NL80211_FLAG_NEED_RTNL,
12364         },
12365         {
12366                 .cmd = NL80211_CMD_GET_SURVEY,
12367                 .policy = nl80211_policy,
12368                 .dumpit = nl80211_dump_survey,
12369         },
12370         {
12371                 .cmd = NL80211_CMD_SET_PMKSA,
12372                 .doit = nl80211_setdel_pmksa,
12373                 .policy = nl80211_policy,
12374                 .flags = GENL_UNS_ADMIN_PERM,
12375                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12376                                   NL80211_FLAG_NEED_RTNL,
12377         },
12378         {
12379                 .cmd = NL80211_CMD_DEL_PMKSA,
12380                 .doit = nl80211_setdel_pmksa,
12381                 .policy = nl80211_policy,
12382                 .flags = GENL_UNS_ADMIN_PERM,
12383                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12384                                   NL80211_FLAG_NEED_RTNL,
12385         },
12386         {
12387                 .cmd = NL80211_CMD_FLUSH_PMKSA,
12388                 .doit = nl80211_flush_pmksa,
12389                 .policy = nl80211_policy,
12390                 .flags = GENL_UNS_ADMIN_PERM,
12391                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12392                                   NL80211_FLAG_NEED_RTNL,
12393         },
12394         {
12395                 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
12396                 .doit = nl80211_remain_on_channel,
12397                 .policy = nl80211_policy,
12398                 .flags = GENL_UNS_ADMIN_PERM,
12399                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12400                                   NL80211_FLAG_NEED_RTNL,
12401         },
12402         {
12403                 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
12404                 .doit = nl80211_cancel_remain_on_channel,
12405                 .policy = nl80211_policy,
12406                 .flags = GENL_UNS_ADMIN_PERM,
12407                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12408                                   NL80211_FLAG_NEED_RTNL,
12409         },
12410         {
12411                 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
12412                 .doit = nl80211_set_tx_bitrate_mask,
12413                 .policy = nl80211_policy,
12414                 .flags = GENL_UNS_ADMIN_PERM,
12415                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12416                                   NL80211_FLAG_NEED_RTNL,
12417         },
12418         {
12419                 .cmd = NL80211_CMD_REGISTER_FRAME,
12420                 .doit = nl80211_register_mgmt,
12421                 .policy = nl80211_policy,
12422                 .flags = GENL_UNS_ADMIN_PERM,
12423                 .internal_flags = NL80211_FLAG_NEED_WDEV |
12424                                   NL80211_FLAG_NEED_RTNL,
12425         },
12426         {
12427                 .cmd = NL80211_CMD_FRAME,
12428                 .doit = nl80211_tx_mgmt,
12429                 .policy = nl80211_policy,
12430                 .flags = GENL_UNS_ADMIN_PERM,
12431                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12432                                   NL80211_FLAG_NEED_RTNL,
12433         },
12434         {
12435                 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
12436                 .doit = nl80211_tx_mgmt_cancel_wait,
12437                 .policy = nl80211_policy,
12438                 .flags = GENL_UNS_ADMIN_PERM,
12439                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12440                                   NL80211_FLAG_NEED_RTNL,
12441         },
12442         {
12443                 .cmd = NL80211_CMD_SET_POWER_SAVE,
12444                 .doit = nl80211_set_power_save,
12445                 .policy = nl80211_policy,
12446                 .flags = GENL_UNS_ADMIN_PERM,
12447                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12448                                   NL80211_FLAG_NEED_RTNL,
12449         },
12450         {
12451                 .cmd = NL80211_CMD_GET_POWER_SAVE,
12452                 .doit = nl80211_get_power_save,
12453                 .policy = nl80211_policy,
12454                 /* can be retrieved by unprivileged users */
12455                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12456                                   NL80211_FLAG_NEED_RTNL,
12457         },
12458         {
12459                 .cmd = NL80211_CMD_SET_CQM,
12460                 .doit = nl80211_set_cqm,
12461                 .policy = nl80211_policy,
12462                 .flags = GENL_UNS_ADMIN_PERM,
12463                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12464                                   NL80211_FLAG_NEED_RTNL,
12465         },
12466         {
12467                 .cmd = NL80211_CMD_SET_CHANNEL,
12468                 .doit = nl80211_set_channel,
12469                 .policy = nl80211_policy,
12470                 .flags = GENL_UNS_ADMIN_PERM,
12471                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12472                                   NL80211_FLAG_NEED_RTNL,
12473         },
12474         {
12475                 .cmd = NL80211_CMD_SET_WDS_PEER,
12476                 .doit = nl80211_set_wds_peer,
12477                 .policy = nl80211_policy,
12478                 .flags = GENL_UNS_ADMIN_PERM,
12479                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12480                                   NL80211_FLAG_NEED_RTNL,
12481         },
12482         {
12483                 .cmd = NL80211_CMD_JOIN_MESH,
12484                 .doit = nl80211_join_mesh,
12485                 .policy = nl80211_policy,
12486                 .flags = GENL_UNS_ADMIN_PERM,
12487                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12488                                   NL80211_FLAG_NEED_RTNL,
12489         },
12490         {
12491                 .cmd = NL80211_CMD_LEAVE_MESH,
12492                 .doit = nl80211_leave_mesh,
12493                 .policy = nl80211_policy,
12494                 .flags = GENL_UNS_ADMIN_PERM,
12495                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12496                                   NL80211_FLAG_NEED_RTNL,
12497         },
12498         {
12499                 .cmd = NL80211_CMD_JOIN_OCB,
12500                 .doit = nl80211_join_ocb,
12501                 .policy = nl80211_policy,
12502                 .flags = GENL_UNS_ADMIN_PERM,
12503                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12504                                   NL80211_FLAG_NEED_RTNL,
12505         },
12506         {
12507                 .cmd = NL80211_CMD_LEAVE_OCB,
12508                 .doit = nl80211_leave_ocb,
12509                 .policy = nl80211_policy,
12510                 .flags = GENL_UNS_ADMIN_PERM,
12511                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12512                                   NL80211_FLAG_NEED_RTNL,
12513         },
12514 #ifdef CONFIG_PM
12515         {
12516                 .cmd = NL80211_CMD_GET_WOWLAN,
12517                 .doit = nl80211_get_wowlan,
12518                 .policy = nl80211_policy,
12519                 /* can be retrieved by unprivileged users */
12520                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
12521                                   NL80211_FLAG_NEED_RTNL,
12522         },
12523         {
12524                 .cmd = NL80211_CMD_SET_WOWLAN,
12525                 .doit = nl80211_set_wowlan,
12526                 .policy = nl80211_policy,
12527                 .flags = GENL_UNS_ADMIN_PERM,
12528                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
12529                                   NL80211_FLAG_NEED_RTNL,
12530         },
12531 #endif
12532         {
12533                 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
12534                 .doit = nl80211_set_rekey_data,
12535                 .policy = nl80211_policy,
12536                 .flags = GENL_UNS_ADMIN_PERM,
12537                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12538                                   NL80211_FLAG_NEED_RTNL |
12539                                   NL80211_FLAG_CLEAR_SKB,
12540         },
12541         {
12542                 .cmd = NL80211_CMD_TDLS_MGMT,
12543                 .doit = nl80211_tdls_mgmt,
12544                 .policy = nl80211_policy,
12545                 .flags = GENL_UNS_ADMIN_PERM,
12546                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12547                                   NL80211_FLAG_NEED_RTNL,
12548         },
12549         {
12550                 .cmd = NL80211_CMD_TDLS_OPER,
12551                 .doit = nl80211_tdls_oper,
12552                 .policy = nl80211_policy,
12553                 .flags = GENL_UNS_ADMIN_PERM,
12554                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12555                                   NL80211_FLAG_NEED_RTNL,
12556         },
12557         {
12558                 .cmd = NL80211_CMD_UNEXPECTED_FRAME,
12559                 .doit = nl80211_register_unexpected_frame,
12560                 .policy = nl80211_policy,
12561                 .flags = GENL_UNS_ADMIN_PERM,
12562                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12563                                   NL80211_FLAG_NEED_RTNL,
12564         },
12565         {
12566                 .cmd = NL80211_CMD_PROBE_CLIENT,
12567                 .doit = nl80211_probe_client,
12568                 .policy = nl80211_policy,
12569                 .flags = GENL_UNS_ADMIN_PERM,
12570                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12571                                   NL80211_FLAG_NEED_RTNL,
12572         },
12573         {
12574                 .cmd = NL80211_CMD_REGISTER_BEACONS,
12575                 .doit = nl80211_register_beacons,
12576                 .policy = nl80211_policy,
12577                 .flags = GENL_UNS_ADMIN_PERM,
12578                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
12579                                   NL80211_FLAG_NEED_RTNL,
12580         },
12581         {
12582                 .cmd = NL80211_CMD_SET_NOACK_MAP,
12583                 .doit = nl80211_set_noack_map,
12584                 .policy = nl80211_policy,
12585                 .flags = GENL_UNS_ADMIN_PERM,
12586                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12587                                   NL80211_FLAG_NEED_RTNL,
12588         },
12589         {
12590                 .cmd = NL80211_CMD_START_P2P_DEVICE,
12591                 .doit = nl80211_start_p2p_device,
12592                 .policy = nl80211_policy,
12593                 .flags = GENL_UNS_ADMIN_PERM,
12594                 .internal_flags = NL80211_FLAG_NEED_WDEV |
12595                                   NL80211_FLAG_NEED_RTNL,
12596         },
12597         {
12598                 .cmd = NL80211_CMD_STOP_P2P_DEVICE,
12599                 .doit = nl80211_stop_p2p_device,
12600                 .policy = nl80211_policy,
12601                 .flags = GENL_UNS_ADMIN_PERM,
12602                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12603                                   NL80211_FLAG_NEED_RTNL,
12604         },
12605         {
12606                 .cmd = NL80211_CMD_START_NAN,
12607                 .doit = nl80211_start_nan,
12608                 .policy = nl80211_policy,
12609                 .flags = GENL_ADMIN_PERM,
12610                 .internal_flags = NL80211_FLAG_NEED_WDEV |
12611                                   NL80211_FLAG_NEED_RTNL,
12612         },
12613         {
12614                 .cmd = NL80211_CMD_STOP_NAN,
12615                 .doit = nl80211_stop_nan,
12616                 .policy = nl80211_policy,
12617                 .flags = GENL_ADMIN_PERM,
12618                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12619                                   NL80211_FLAG_NEED_RTNL,
12620         },
12621         {
12622                 .cmd = NL80211_CMD_ADD_NAN_FUNCTION,
12623                 .doit = nl80211_nan_add_func,
12624                 .policy = nl80211_policy,
12625                 .flags = GENL_ADMIN_PERM,
12626                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12627                                   NL80211_FLAG_NEED_RTNL,
12628         },
12629         {
12630                 .cmd = NL80211_CMD_DEL_NAN_FUNCTION,
12631                 .doit = nl80211_nan_del_func,
12632                 .policy = nl80211_policy,
12633                 .flags = GENL_ADMIN_PERM,
12634                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12635                                   NL80211_FLAG_NEED_RTNL,
12636         },
12637         {
12638                 .cmd = NL80211_CMD_CHANGE_NAN_CONFIG,
12639                 .doit = nl80211_nan_change_config,
12640                 .policy = nl80211_policy,
12641                 .flags = GENL_ADMIN_PERM,
12642                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12643                                   NL80211_FLAG_NEED_RTNL,
12644         },
12645         {
12646                 .cmd = NL80211_CMD_SET_MCAST_RATE,
12647                 .doit = nl80211_set_mcast_rate,
12648                 .policy = nl80211_policy,
12649                 .flags = GENL_UNS_ADMIN_PERM,
12650                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12651                                   NL80211_FLAG_NEED_RTNL,
12652         },
12653         {
12654                 .cmd = NL80211_CMD_SET_MAC_ACL,
12655                 .doit = nl80211_set_mac_acl,
12656                 .policy = nl80211_policy,
12657                 .flags = GENL_UNS_ADMIN_PERM,
12658                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12659                                   NL80211_FLAG_NEED_RTNL,
12660         },
12661         {
12662                 .cmd = NL80211_CMD_RADAR_DETECT,
12663                 .doit = nl80211_start_radar_detection,
12664                 .policy = nl80211_policy,
12665                 .flags = GENL_UNS_ADMIN_PERM,
12666                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12667                                   NL80211_FLAG_NEED_RTNL,
12668         },
12669         {
12670                 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES,
12671                 .doit = nl80211_get_protocol_features,
12672                 .policy = nl80211_policy,
12673         },
12674         {
12675                 .cmd = NL80211_CMD_UPDATE_FT_IES,
12676                 .doit = nl80211_update_ft_ies,
12677                 .policy = nl80211_policy,
12678                 .flags = GENL_UNS_ADMIN_PERM,
12679                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12680                                   NL80211_FLAG_NEED_RTNL,
12681         },
12682         {
12683                 .cmd = NL80211_CMD_CRIT_PROTOCOL_START,
12684                 .doit = nl80211_crit_protocol_start,
12685                 .policy = nl80211_policy,
12686                 .flags = GENL_UNS_ADMIN_PERM,
12687                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12688                                   NL80211_FLAG_NEED_RTNL,
12689         },
12690         {
12691                 .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP,
12692                 .doit = nl80211_crit_protocol_stop,
12693                 .policy = nl80211_policy,
12694                 .flags = GENL_UNS_ADMIN_PERM,
12695                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12696                                   NL80211_FLAG_NEED_RTNL,
12697         },
12698         {
12699                 .cmd = NL80211_CMD_GET_COALESCE,
12700                 .doit = nl80211_get_coalesce,
12701                 .policy = nl80211_policy,
12702                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
12703                                   NL80211_FLAG_NEED_RTNL,
12704         },
12705         {
12706                 .cmd = NL80211_CMD_SET_COALESCE,
12707                 .doit = nl80211_set_coalesce,
12708                 .policy = nl80211_policy,
12709                 .flags = GENL_UNS_ADMIN_PERM,
12710                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
12711                                   NL80211_FLAG_NEED_RTNL,
12712         },
12713         {
12714                 .cmd = NL80211_CMD_CHANNEL_SWITCH,
12715                 .doit = nl80211_channel_switch,
12716                 .policy = nl80211_policy,
12717                 .flags = GENL_UNS_ADMIN_PERM,
12718                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12719                                   NL80211_FLAG_NEED_RTNL,
12720         },
12721         {
12722                 .cmd = NL80211_CMD_VENDOR,
12723                 .doit = nl80211_vendor_cmd,
12724                 .dumpit = nl80211_vendor_cmd_dump,
12725                 .policy = nl80211_policy,
12726                 .flags = GENL_UNS_ADMIN_PERM,
12727                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
12728                                   NL80211_FLAG_NEED_RTNL,
12729         },
12730         {
12731                 .cmd = NL80211_CMD_SET_QOS_MAP,
12732                 .doit = nl80211_set_qos_map,
12733                 .policy = nl80211_policy,
12734                 .flags = GENL_UNS_ADMIN_PERM,
12735                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12736                                   NL80211_FLAG_NEED_RTNL,
12737         },
12738         {
12739                 .cmd = NL80211_CMD_ADD_TX_TS,
12740                 .doit = nl80211_add_tx_ts,
12741                 .policy = nl80211_policy,
12742                 .flags = GENL_UNS_ADMIN_PERM,
12743                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12744                                   NL80211_FLAG_NEED_RTNL,
12745         },
12746         {
12747                 .cmd = NL80211_CMD_DEL_TX_TS,
12748                 .doit = nl80211_del_tx_ts,
12749                 .policy = nl80211_policy,
12750                 .flags = GENL_UNS_ADMIN_PERM,
12751                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12752                                   NL80211_FLAG_NEED_RTNL,
12753         },
12754         {
12755                 .cmd = NL80211_CMD_TDLS_CHANNEL_SWITCH,
12756                 .doit = nl80211_tdls_channel_switch,
12757                 .policy = nl80211_policy,
12758                 .flags = GENL_UNS_ADMIN_PERM,
12759                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12760                                   NL80211_FLAG_NEED_RTNL,
12761         },
12762         {
12763                 .cmd = NL80211_CMD_TDLS_CANCEL_CHANNEL_SWITCH,
12764                 .doit = nl80211_tdls_cancel_channel_switch,
12765                 .policy = nl80211_policy,
12766                 .flags = GENL_UNS_ADMIN_PERM,
12767                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12768                                   NL80211_FLAG_NEED_RTNL,
12769         },
12770         {
12771                 .cmd = NL80211_CMD_SET_MULTICAST_TO_UNICAST,
12772                 .doit = nl80211_set_multicast_to_unicast,
12773                 .policy = nl80211_policy,
12774                 .flags = GENL_UNS_ADMIN_PERM,
12775                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12776                                   NL80211_FLAG_NEED_RTNL,
12777         },
12778 };
12779
12780 static struct genl_family nl80211_fam __ro_after_init = {
12781         .name = NL80211_GENL_NAME,      /* have users key off the name instead */
12782         .hdrsize = 0,                   /* no private header */
12783         .version = 1,                   /* no particular meaning now */
12784         .maxattr = NL80211_ATTR_MAX,
12785         .netnsok = true,
12786         .pre_doit = nl80211_pre_doit,
12787         .post_doit = nl80211_post_doit,
12788         .module = THIS_MODULE,
12789         .ops = nl80211_ops,
12790         .n_ops = ARRAY_SIZE(nl80211_ops),
12791         .mcgrps = nl80211_mcgrps,
12792         .n_mcgrps = ARRAY_SIZE(nl80211_mcgrps),
12793 };
12794
12795 /* notification functions */
12796
12797 void nl80211_notify_wiphy(struct cfg80211_registered_device *rdev,
12798                           enum nl80211_commands cmd)
12799 {
12800         struct sk_buff *msg;
12801         struct nl80211_dump_wiphy_state state = {};
12802
12803         WARN_ON(cmd != NL80211_CMD_NEW_WIPHY &&
12804                 cmd != NL80211_CMD_DEL_WIPHY);
12805
12806         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12807         if (!msg)
12808                 return;
12809
12810         if (nl80211_send_wiphy(rdev, cmd, msg, 0, 0, 0, &state) < 0) {
12811                 nlmsg_free(msg);
12812                 return;
12813         }
12814
12815         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12816                                 NL80211_MCGRP_CONFIG, GFP_KERNEL);
12817 }
12818
12819 void nl80211_notify_iface(struct cfg80211_registered_device *rdev,
12820                                 struct wireless_dev *wdev,
12821                                 enum nl80211_commands cmd)
12822 {
12823         struct sk_buff *msg;
12824
12825         WARN_ON(cmd != NL80211_CMD_NEW_INTERFACE &&
12826                 cmd != NL80211_CMD_DEL_INTERFACE);
12827
12828         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12829         if (!msg)
12830                 return;
12831
12832         if (nl80211_send_iface(msg, 0, 0, 0, rdev, wdev,
12833                                cmd == NL80211_CMD_DEL_INTERFACE) < 0) {
12834                 nlmsg_free(msg);
12835                 return;
12836         }
12837
12838         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12839                                 NL80211_MCGRP_CONFIG, GFP_KERNEL);
12840 }
12841
12842 static int nl80211_add_scan_req(struct sk_buff *msg,
12843                                 struct cfg80211_registered_device *rdev)
12844 {
12845         struct cfg80211_scan_request *req = rdev->scan_req;
12846         struct nlattr *nest;
12847         int i;
12848
12849         if (WARN_ON(!req))
12850                 return 0;
12851
12852         nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS);
12853         if (!nest)
12854                 goto nla_put_failure;
12855         for (i = 0; i < req->n_ssids; i++) {
12856                 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid))
12857                         goto nla_put_failure;
12858         }
12859         nla_nest_end(msg, nest);
12860
12861         nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
12862         if (!nest)
12863                 goto nla_put_failure;
12864         for (i = 0; i < req->n_channels; i++) {
12865                 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
12866                         goto nla_put_failure;
12867         }
12868         nla_nest_end(msg, nest);
12869
12870         if (req->ie &&
12871             nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie))
12872                 goto nla_put_failure;
12873
12874         if (req->flags &&
12875             nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags))
12876                 goto nla_put_failure;
12877
12878         if (req->info.scan_start_tsf &&
12879             (nla_put_u64_64bit(msg, NL80211_ATTR_SCAN_START_TIME_TSF,
12880                                req->info.scan_start_tsf, NL80211_BSS_PAD) ||
12881              nla_put(msg, NL80211_ATTR_SCAN_START_TIME_TSF_BSSID, ETH_ALEN,
12882                      req->info.tsf_bssid)))
12883                 goto nla_put_failure;
12884
12885         return 0;
12886  nla_put_failure:
12887         return -ENOBUFS;
12888 }
12889
12890 static int nl80211_prep_scan_msg(struct sk_buff *msg,
12891                                  struct cfg80211_registered_device *rdev,
12892                                  struct wireless_dev *wdev,
12893                                  u32 portid, u32 seq, int flags,
12894                                  u32 cmd)
12895 {
12896         void *hdr;
12897
12898         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
12899         if (!hdr)
12900                 return -1;
12901
12902         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12903             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
12904                                          wdev->netdev->ifindex)) ||
12905             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
12906                               NL80211_ATTR_PAD))
12907                 goto nla_put_failure;
12908
12909         /* ignore errors and send incomplete event anyway */
12910         nl80211_add_scan_req(msg, rdev);
12911
12912         genlmsg_end(msg, hdr);
12913         return 0;
12914
12915  nla_put_failure:
12916         genlmsg_cancel(msg, hdr);
12917         return -EMSGSIZE;
12918 }
12919
12920 static int
12921 nl80211_prep_sched_scan_msg(struct sk_buff *msg,
12922                             struct cfg80211_registered_device *rdev,
12923                             struct net_device *netdev,
12924                             u32 portid, u32 seq, int flags, u32 cmd)
12925 {
12926         void *hdr;
12927
12928         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
12929         if (!hdr)
12930                 return -1;
12931
12932         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12933             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
12934                 goto nla_put_failure;
12935
12936         genlmsg_end(msg, hdr);
12937         return 0;
12938
12939  nla_put_failure:
12940         genlmsg_cancel(msg, hdr);
12941         return -EMSGSIZE;
12942 }
12943
12944 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
12945                              struct wireless_dev *wdev)
12946 {
12947         struct sk_buff *msg;
12948
12949         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12950         if (!msg)
12951                 return;
12952
12953         if (nl80211_prep_scan_msg(msg, rdev, wdev, 0, 0, 0,
12954                                   NL80211_CMD_TRIGGER_SCAN) < 0) {
12955                 nlmsg_free(msg);
12956                 return;
12957         }
12958
12959         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12960                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
12961 }
12962
12963 struct sk_buff *nl80211_build_scan_msg(struct cfg80211_registered_device *rdev,
12964                                        struct wireless_dev *wdev, bool aborted)
12965 {
12966         struct sk_buff *msg;
12967
12968         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12969         if (!msg)
12970                 return NULL;
12971
12972         if (nl80211_prep_scan_msg(msg, rdev, wdev, 0, 0, 0,
12973                                   aborted ? NL80211_CMD_SCAN_ABORTED :
12974                                             NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
12975                 nlmsg_free(msg);
12976                 return NULL;
12977         }
12978
12979         return msg;
12980 }
12981
12982 /* send message created by nl80211_build_scan_msg() */
12983 void nl80211_send_scan_msg(struct cfg80211_registered_device *rdev,
12984                            struct sk_buff *msg)
12985 {
12986         if (!msg)
12987                 return;
12988
12989         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12990                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
12991 }
12992
12993 void nl80211_send_sched_scan(struct cfg80211_registered_device *rdev,
12994                              struct net_device *netdev, u32 cmd)
12995 {
12996         struct sk_buff *msg;
12997
12998         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12999         if (!msg)
13000                 return;
13001
13002         if (nl80211_prep_sched_scan_msg(msg, rdev, netdev, 0, 0, 0, cmd) < 0) {
13003                 nlmsg_free(msg);
13004                 return;
13005         }
13006
13007         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13008                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
13009 }
13010
13011 static bool nl80211_reg_change_event_fill(struct sk_buff *msg,
13012                                           struct regulatory_request *request)
13013 {
13014         /* Userspace can always count this one always being set */
13015         if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator))
13016                 goto nla_put_failure;
13017
13018         if (request->alpha2[0] == '0' && request->alpha2[1] == '0') {
13019                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
13020                                NL80211_REGDOM_TYPE_WORLD))
13021                         goto nla_put_failure;
13022         } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') {
13023                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
13024                                NL80211_REGDOM_TYPE_CUSTOM_WORLD))
13025                         goto nla_put_failure;
13026         } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
13027                    request->intersect) {
13028                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
13029                                NL80211_REGDOM_TYPE_INTERSECTION))
13030                         goto nla_put_failure;
13031         } else {
13032                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
13033                                NL80211_REGDOM_TYPE_COUNTRY) ||
13034                     nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
13035                                    request->alpha2))
13036                         goto nla_put_failure;
13037         }
13038
13039         if (request->wiphy_idx != WIPHY_IDX_INVALID) {
13040                 struct wiphy *wiphy = wiphy_idx_to_wiphy(request->wiphy_idx);
13041
13042                 if (wiphy &&
13043                     nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx))
13044                         goto nla_put_failure;
13045
13046                 if (wiphy &&
13047                     wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
13048                     nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
13049                         goto nla_put_failure;
13050         }
13051
13052         return true;
13053
13054 nla_put_failure:
13055         return false;
13056 }
13057
13058 /*
13059  * This can happen on global regulatory changes or device specific settings
13060  * based on custom regulatory domains.
13061  */
13062 void nl80211_common_reg_change_event(enum nl80211_commands cmd_id,
13063                                      struct regulatory_request *request)
13064 {
13065         struct sk_buff *msg;
13066         void *hdr;
13067
13068         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13069         if (!msg)
13070                 return;
13071
13072         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd_id);
13073         if (!hdr) {
13074                 nlmsg_free(msg);
13075                 return;
13076         }
13077
13078         if (nl80211_reg_change_event_fill(msg, request) == false)
13079                 goto nla_put_failure;
13080
13081         genlmsg_end(msg, hdr);
13082
13083         rcu_read_lock();
13084         genlmsg_multicast_allns(&nl80211_fam, msg, 0,
13085                                 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
13086         rcu_read_unlock();
13087
13088         return;
13089
13090 nla_put_failure:
13091         genlmsg_cancel(msg, hdr);
13092         nlmsg_free(msg);
13093 }
13094
13095 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
13096                                     struct net_device *netdev,
13097                                     const u8 *buf, size_t len,
13098                                     enum nl80211_commands cmd, gfp_t gfp,
13099                                     int uapsd_queues)
13100 {
13101         struct sk_buff *msg;
13102         void *hdr;
13103
13104         msg = nlmsg_new(100 + len, gfp);
13105         if (!msg)
13106                 return;
13107
13108         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
13109         if (!hdr) {
13110                 nlmsg_free(msg);
13111                 return;
13112         }
13113
13114         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13115             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13116             nla_put(msg, NL80211_ATTR_FRAME, len, buf))
13117                 goto nla_put_failure;
13118
13119         if (uapsd_queues >= 0) {
13120                 struct nlattr *nla_wmm =
13121                         nla_nest_start(msg, NL80211_ATTR_STA_WME);
13122                 if (!nla_wmm)
13123                         goto nla_put_failure;
13124
13125                 if (nla_put_u8(msg, NL80211_STA_WME_UAPSD_QUEUES,
13126                                uapsd_queues))
13127                         goto nla_put_failure;
13128
13129                 nla_nest_end(msg, nla_wmm);
13130         }
13131
13132         genlmsg_end(msg, hdr);
13133
13134         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13135                                 NL80211_MCGRP_MLME, gfp);
13136         return;
13137
13138  nla_put_failure:
13139         genlmsg_cancel(msg, hdr);
13140         nlmsg_free(msg);
13141 }
13142
13143 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
13144                           struct net_device *netdev, const u8 *buf,
13145                           size_t len, gfp_t gfp)
13146 {
13147         nl80211_send_mlme_event(rdev, netdev, buf, len,
13148                                 NL80211_CMD_AUTHENTICATE, gfp, -1);
13149 }
13150
13151 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
13152                            struct net_device *netdev, const u8 *buf,
13153                            size_t len, gfp_t gfp, int uapsd_queues)
13154 {
13155         nl80211_send_mlme_event(rdev, netdev, buf, len,
13156                                 NL80211_CMD_ASSOCIATE, gfp, uapsd_queues);
13157 }
13158
13159 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
13160                          struct net_device *netdev, const u8 *buf,
13161                          size_t len, gfp_t gfp)
13162 {
13163         nl80211_send_mlme_event(rdev, netdev, buf, len,
13164                                 NL80211_CMD_DEAUTHENTICATE, gfp, -1);
13165 }
13166
13167 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
13168                            struct net_device *netdev, const u8 *buf,
13169                            size_t len, gfp_t gfp)
13170 {
13171         nl80211_send_mlme_event(rdev, netdev, buf, len,
13172                                 NL80211_CMD_DISASSOCIATE, gfp, -1);
13173 }
13174
13175 void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf,
13176                                   size_t len)
13177 {
13178         struct wireless_dev *wdev = dev->ieee80211_ptr;
13179         struct wiphy *wiphy = wdev->wiphy;
13180         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13181         const struct ieee80211_mgmt *mgmt = (void *)buf;
13182         u32 cmd;
13183
13184         if (WARN_ON(len < 2))
13185                 return;
13186
13187         if (ieee80211_is_deauth(mgmt->frame_control))
13188                 cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE;
13189         else
13190                 cmd = NL80211_CMD_UNPROT_DISASSOCIATE;
13191
13192         trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len);
13193         nl80211_send_mlme_event(rdev, dev, buf, len, cmd, GFP_ATOMIC, -1);
13194 }
13195 EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt);
13196
13197 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
13198                                       struct net_device *netdev, int cmd,
13199                                       const u8 *addr, gfp_t gfp)
13200 {
13201         struct sk_buff *msg;
13202         void *hdr;
13203
13204         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13205         if (!msg)
13206                 return;
13207
13208         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
13209         if (!hdr) {
13210                 nlmsg_free(msg);
13211                 return;
13212         }
13213
13214         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13215             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13216             nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
13217             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
13218                 goto nla_put_failure;
13219
13220         genlmsg_end(msg, hdr);
13221
13222         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13223                                 NL80211_MCGRP_MLME, gfp);
13224         return;
13225
13226  nla_put_failure:
13227         genlmsg_cancel(msg, hdr);
13228         nlmsg_free(msg);
13229 }
13230
13231 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
13232                                struct net_device *netdev, const u8 *addr,
13233                                gfp_t gfp)
13234 {
13235         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
13236                                   addr, gfp);
13237 }
13238
13239 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
13240                                 struct net_device *netdev, const u8 *addr,
13241                                 gfp_t gfp)
13242 {
13243         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
13244                                   addr, gfp);
13245 }
13246
13247 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
13248                                  struct net_device *netdev, const u8 *bssid,
13249                                  const u8 *req_ie, size_t req_ie_len,
13250                                  const u8 *resp_ie, size_t resp_ie_len,
13251                                  int status,
13252                                  enum nl80211_timeout_reason timeout_reason,
13253                                  gfp_t gfp)
13254 {
13255         struct sk_buff *msg;
13256         void *hdr;
13257
13258         msg = nlmsg_new(100 + req_ie_len + resp_ie_len, gfp);
13259         if (!msg)
13260                 return;
13261
13262         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
13263         if (!hdr) {
13264                 nlmsg_free(msg);
13265                 return;
13266         }
13267
13268         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13269             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13270             (bssid && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid)) ||
13271             nla_put_u16(msg, NL80211_ATTR_STATUS_CODE,
13272                         status < 0 ? WLAN_STATUS_UNSPECIFIED_FAILURE :
13273                         status) ||
13274             (status < 0 &&
13275              (nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
13276               nla_put_u32(msg, NL80211_ATTR_TIMEOUT_REASON, timeout_reason))) ||
13277             (req_ie &&
13278              nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
13279             (resp_ie &&
13280              nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
13281                 goto nla_put_failure;
13282
13283         genlmsg_end(msg, hdr);
13284
13285         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13286                                 NL80211_MCGRP_MLME, gfp);
13287         return;
13288
13289  nla_put_failure:
13290         genlmsg_cancel(msg, hdr);
13291         nlmsg_free(msg);
13292 }
13293
13294 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
13295                          struct net_device *netdev, const u8 *bssid,
13296                          const u8 *req_ie, size_t req_ie_len,
13297                          const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp)
13298 {
13299         struct sk_buff *msg;
13300         void *hdr;
13301
13302         msg = nlmsg_new(100 + req_ie_len + resp_ie_len, gfp);
13303         if (!msg)
13304                 return;
13305
13306         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
13307         if (!hdr) {
13308                 nlmsg_free(msg);
13309                 return;
13310         }
13311
13312         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13313             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13314             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid) ||
13315             (req_ie &&
13316              nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
13317             (resp_ie &&
13318              nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
13319                 goto nla_put_failure;
13320
13321         genlmsg_end(msg, hdr);
13322
13323         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13324                                 NL80211_MCGRP_MLME, gfp);
13325         return;
13326
13327  nla_put_failure:
13328         genlmsg_cancel(msg, hdr);
13329         nlmsg_free(msg);
13330 }
13331
13332 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
13333                                struct net_device *netdev, u16 reason,
13334                                const u8 *ie, size_t ie_len, bool from_ap)
13335 {
13336         struct sk_buff *msg;
13337         void *hdr;
13338
13339         msg = nlmsg_new(100 + ie_len, GFP_KERNEL);
13340         if (!msg)
13341                 return;
13342
13343         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
13344         if (!hdr) {
13345                 nlmsg_free(msg);
13346                 return;
13347         }
13348
13349         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13350             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13351             (from_ap && reason &&
13352              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) ||
13353             (from_ap &&
13354              nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) ||
13355             (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie)))
13356                 goto nla_put_failure;
13357
13358         genlmsg_end(msg, hdr);
13359
13360         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13361                                 NL80211_MCGRP_MLME, GFP_KERNEL);
13362         return;
13363
13364  nla_put_failure:
13365         genlmsg_cancel(msg, hdr);
13366         nlmsg_free(msg);
13367 }
13368
13369 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
13370                              struct net_device *netdev, const u8 *bssid,
13371                              gfp_t gfp)
13372 {
13373         struct sk_buff *msg;
13374         void *hdr;
13375
13376         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13377         if (!msg)
13378                 return;
13379
13380         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
13381         if (!hdr) {
13382                 nlmsg_free(msg);
13383                 return;
13384         }
13385
13386         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13387             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13388             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
13389                 goto nla_put_failure;
13390
13391         genlmsg_end(msg, hdr);
13392
13393         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13394                                 NL80211_MCGRP_MLME, gfp);
13395         return;
13396
13397  nla_put_failure:
13398         genlmsg_cancel(msg, hdr);
13399         nlmsg_free(msg);
13400 }
13401
13402 void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr,
13403                                         const u8* ie, u8 ie_len, gfp_t gfp)
13404 {
13405         struct wireless_dev *wdev = dev->ieee80211_ptr;
13406         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
13407         struct sk_buff *msg;
13408         void *hdr;
13409
13410         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT))
13411                 return;
13412
13413         trace_cfg80211_notify_new_peer_candidate(dev, addr);
13414
13415         msg = nlmsg_new(100 + ie_len, gfp);
13416         if (!msg)
13417                 return;
13418
13419         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
13420         if (!hdr) {
13421                 nlmsg_free(msg);
13422                 return;
13423         }
13424
13425         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13426             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
13427             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
13428             (ie_len && ie &&
13429              nla_put(msg, NL80211_ATTR_IE, ie_len , ie)))
13430                 goto nla_put_failure;
13431
13432         genlmsg_end(msg, hdr);
13433
13434         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13435                                 NL80211_MCGRP_MLME, gfp);
13436         return;
13437
13438  nla_put_failure:
13439         genlmsg_cancel(msg, hdr);
13440         nlmsg_free(msg);
13441 }
13442 EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate);
13443
13444 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
13445                                  struct net_device *netdev, const u8 *addr,
13446                                  enum nl80211_key_type key_type, int key_id,
13447                                  const u8 *tsc, gfp_t gfp)
13448 {
13449         struct sk_buff *msg;
13450         void *hdr;
13451
13452         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13453         if (!msg)
13454                 return;
13455
13456         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
13457         if (!hdr) {
13458                 nlmsg_free(msg);
13459                 return;
13460         }
13461
13462         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13463             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13464             (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
13465             nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) ||
13466             (key_id != -1 &&
13467              nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) ||
13468             (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc)))
13469                 goto nla_put_failure;
13470
13471         genlmsg_end(msg, hdr);
13472
13473         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13474                                 NL80211_MCGRP_MLME, gfp);
13475         return;
13476
13477  nla_put_failure:
13478         genlmsg_cancel(msg, hdr);
13479         nlmsg_free(msg);
13480 }
13481
13482 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
13483                                     struct ieee80211_channel *channel_before,
13484                                     struct ieee80211_channel *channel_after)
13485 {
13486         struct sk_buff *msg;
13487         void *hdr;
13488         struct nlattr *nl_freq;
13489
13490         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
13491         if (!msg)
13492                 return;
13493
13494         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
13495         if (!hdr) {
13496                 nlmsg_free(msg);
13497                 return;
13498         }
13499
13500         /*
13501          * Since we are applying the beacon hint to a wiphy we know its
13502          * wiphy_idx is valid
13503          */
13504         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
13505                 goto nla_put_failure;
13506
13507         /* Before */
13508         nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE);
13509         if (!nl_freq)
13510                 goto nla_put_failure;
13511         if (nl80211_msg_put_channel(msg, channel_before, false))
13512                 goto nla_put_failure;
13513         nla_nest_end(msg, nl_freq);
13514
13515         /* After */
13516         nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER);
13517         if (!nl_freq)
13518                 goto nla_put_failure;
13519         if (nl80211_msg_put_channel(msg, channel_after, false))
13520                 goto nla_put_failure;
13521         nla_nest_end(msg, nl_freq);
13522
13523         genlmsg_end(msg, hdr);
13524
13525         rcu_read_lock();
13526         genlmsg_multicast_allns(&nl80211_fam, msg, 0,
13527                                 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
13528         rcu_read_unlock();
13529
13530         return;
13531
13532 nla_put_failure:
13533         genlmsg_cancel(msg, hdr);
13534         nlmsg_free(msg);
13535 }
13536
13537 static void nl80211_send_remain_on_chan_event(
13538         int cmd, struct cfg80211_registered_device *rdev,
13539         struct wireless_dev *wdev, u64 cookie,
13540         struct ieee80211_channel *chan,
13541         unsigned int duration, gfp_t gfp)
13542 {
13543         struct sk_buff *msg;
13544         void *hdr;
13545
13546         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13547         if (!msg)
13548                 return;
13549
13550         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
13551         if (!hdr) {
13552                 nlmsg_free(msg);
13553                 return;
13554         }
13555
13556         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13557             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
13558                                          wdev->netdev->ifindex)) ||
13559             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
13560                               NL80211_ATTR_PAD) ||
13561             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) ||
13562             nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
13563                         NL80211_CHAN_NO_HT) ||
13564             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
13565                               NL80211_ATTR_PAD))
13566                 goto nla_put_failure;
13567
13568         if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL &&
13569             nla_put_u32(msg, NL80211_ATTR_DURATION, duration))
13570                 goto nla_put_failure;
13571
13572         genlmsg_end(msg, hdr);
13573
13574         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13575                                 NL80211_MCGRP_MLME, gfp);
13576         return;
13577
13578  nla_put_failure:
13579         genlmsg_cancel(msg, hdr);
13580         nlmsg_free(msg);
13581 }
13582
13583 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie,
13584                                struct ieee80211_channel *chan,
13585                                unsigned int duration, gfp_t gfp)
13586 {
13587         struct wiphy *wiphy = wdev->wiphy;
13588         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13589
13590         trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration);
13591         nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
13592                                           rdev, wdev, cookie, chan,
13593                                           duration, gfp);
13594 }
13595 EXPORT_SYMBOL(cfg80211_ready_on_channel);
13596
13597 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie,
13598                                         struct ieee80211_channel *chan,
13599                                         gfp_t gfp)
13600 {
13601         struct wiphy *wiphy = wdev->wiphy;
13602         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13603
13604         trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan);
13605         nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
13606                                           rdev, wdev, cookie, chan, 0, gfp);
13607 }
13608 EXPORT_SYMBOL(cfg80211_remain_on_channel_expired);
13609
13610 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr,
13611                       struct station_info *sinfo, gfp_t gfp)
13612 {
13613         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
13614         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13615         struct sk_buff *msg;
13616
13617         trace_cfg80211_new_sta(dev, mac_addr, sinfo);
13618
13619         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13620         if (!msg)
13621                 return;
13622
13623         if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION, 0, 0, 0,
13624                                  rdev, dev, mac_addr, sinfo) < 0) {
13625                 nlmsg_free(msg);
13626                 return;
13627         }
13628
13629         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13630                                 NL80211_MCGRP_MLME, gfp);
13631 }
13632 EXPORT_SYMBOL(cfg80211_new_sta);
13633
13634 void cfg80211_del_sta_sinfo(struct net_device *dev, const u8 *mac_addr,
13635                             struct station_info *sinfo, gfp_t gfp)
13636 {
13637         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
13638         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13639         struct sk_buff *msg;
13640         struct station_info empty_sinfo = {};
13641
13642         if (!sinfo)
13643                 sinfo = &empty_sinfo;
13644
13645         trace_cfg80211_del_sta(dev, mac_addr);
13646
13647         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13648         if (!msg)
13649                 return;
13650
13651         if (nl80211_send_station(msg, NL80211_CMD_DEL_STATION, 0, 0, 0,
13652                                  rdev, dev, mac_addr, sinfo) < 0) {
13653                 nlmsg_free(msg);
13654                 return;
13655         }
13656
13657         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13658                                 NL80211_MCGRP_MLME, gfp);
13659 }
13660 EXPORT_SYMBOL(cfg80211_del_sta_sinfo);
13661
13662 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr,
13663                           enum nl80211_connect_failed_reason reason,
13664                           gfp_t gfp)
13665 {
13666         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
13667         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13668         struct sk_buff *msg;
13669         void *hdr;
13670
13671         msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
13672         if (!msg)
13673                 return;
13674
13675         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED);
13676         if (!hdr) {
13677                 nlmsg_free(msg);
13678                 return;
13679         }
13680
13681         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
13682             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
13683             nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason))
13684                 goto nla_put_failure;
13685
13686         genlmsg_end(msg, hdr);
13687
13688         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13689                                 NL80211_MCGRP_MLME, gfp);
13690         return;
13691
13692  nla_put_failure:
13693         genlmsg_cancel(msg, hdr);
13694         nlmsg_free(msg);
13695 }
13696 EXPORT_SYMBOL(cfg80211_conn_failed);
13697
13698 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
13699                                        const u8 *addr, gfp_t gfp)
13700 {
13701         struct wireless_dev *wdev = dev->ieee80211_ptr;
13702         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
13703         struct sk_buff *msg;
13704         void *hdr;
13705         u32 nlportid = ACCESS_ONCE(wdev->ap_unexpected_nlportid);
13706
13707         if (!nlportid)
13708                 return false;
13709
13710         msg = nlmsg_new(100, gfp);
13711         if (!msg)
13712                 return true;
13713
13714         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
13715         if (!hdr) {
13716                 nlmsg_free(msg);
13717                 return true;
13718         }
13719
13720         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13721             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
13722             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
13723                 goto nla_put_failure;
13724
13725         genlmsg_end(msg, hdr);
13726         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
13727         return true;
13728
13729  nla_put_failure:
13730         genlmsg_cancel(msg, hdr);
13731         nlmsg_free(msg);
13732         return true;
13733 }
13734
13735 bool cfg80211_rx_spurious_frame(struct net_device *dev,
13736                                 const u8 *addr, gfp_t gfp)
13737 {
13738         struct wireless_dev *wdev = dev->ieee80211_ptr;
13739         bool ret;
13740
13741         trace_cfg80211_rx_spurious_frame(dev, addr);
13742
13743         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
13744                     wdev->iftype != NL80211_IFTYPE_P2P_GO)) {
13745                 trace_cfg80211_return_bool(false);
13746                 return false;
13747         }
13748         ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
13749                                          addr, gfp);
13750         trace_cfg80211_return_bool(ret);
13751         return ret;
13752 }
13753 EXPORT_SYMBOL(cfg80211_rx_spurious_frame);
13754
13755 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev,
13756                                         const u8 *addr, gfp_t gfp)
13757 {
13758         struct wireless_dev *wdev = dev->ieee80211_ptr;
13759         bool ret;
13760
13761         trace_cfg80211_rx_unexpected_4addr_frame(dev, addr);
13762
13763         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
13764                     wdev->iftype != NL80211_IFTYPE_P2P_GO &&
13765                     wdev->iftype != NL80211_IFTYPE_AP_VLAN)) {
13766                 trace_cfg80211_return_bool(false);
13767                 return false;
13768         }
13769         ret = __nl80211_unexpected_frame(dev,
13770                                          NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
13771                                          addr, gfp);
13772         trace_cfg80211_return_bool(ret);
13773         return ret;
13774 }
13775 EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame);
13776
13777 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
13778                       struct wireless_dev *wdev, u32 nlportid,
13779                       int freq, int sig_dbm,
13780                       const u8 *buf, size_t len, u32 flags, gfp_t gfp)
13781 {
13782         struct net_device *netdev = wdev->netdev;
13783         struct sk_buff *msg;
13784         void *hdr;
13785
13786         msg = nlmsg_new(100 + len, gfp);
13787         if (!msg)
13788                 return -ENOMEM;
13789
13790         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
13791         if (!hdr) {
13792                 nlmsg_free(msg);
13793                 return -ENOMEM;
13794         }
13795
13796         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13797             (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
13798                                         netdev->ifindex)) ||
13799             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
13800                               NL80211_ATTR_PAD) ||
13801             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) ||
13802             (sig_dbm &&
13803              nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
13804             nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
13805             (flags &&
13806              nla_put_u32(msg, NL80211_ATTR_RXMGMT_FLAGS, flags)))
13807                 goto nla_put_failure;
13808
13809         genlmsg_end(msg, hdr);
13810
13811         return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
13812
13813  nla_put_failure:
13814         genlmsg_cancel(msg, hdr);
13815         nlmsg_free(msg);
13816         return -ENOBUFS;
13817 }
13818
13819 void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie,
13820                              const u8 *buf, size_t len, bool ack, gfp_t gfp)
13821 {
13822         struct wiphy *wiphy = wdev->wiphy;
13823         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13824         struct net_device *netdev = wdev->netdev;
13825         struct sk_buff *msg;
13826         void *hdr;
13827
13828         trace_cfg80211_mgmt_tx_status(wdev, cookie, ack);
13829
13830         msg = nlmsg_new(100 + len, gfp);
13831         if (!msg)
13832                 return;
13833
13834         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS);
13835         if (!hdr) {
13836                 nlmsg_free(msg);
13837                 return;
13838         }
13839
13840         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13841             (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
13842                                    netdev->ifindex)) ||
13843             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
13844                               NL80211_ATTR_PAD) ||
13845             nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
13846             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
13847                               NL80211_ATTR_PAD) ||
13848             (ack && nla_put_flag(msg, NL80211_ATTR_ACK)))
13849                 goto nla_put_failure;
13850
13851         genlmsg_end(msg, hdr);
13852
13853         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13854                                 NL80211_MCGRP_MLME, gfp);
13855         return;
13856
13857  nla_put_failure:
13858         genlmsg_cancel(msg, hdr);
13859         nlmsg_free(msg);
13860 }
13861 EXPORT_SYMBOL(cfg80211_mgmt_tx_status);
13862
13863 static struct sk_buff *cfg80211_prepare_cqm(struct net_device *dev,
13864                                             const char *mac, gfp_t gfp)
13865 {
13866         struct wireless_dev *wdev = dev->ieee80211_ptr;
13867         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
13868         struct sk_buff *msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13869         void **cb;
13870
13871         if (!msg)
13872                 return NULL;
13873
13874         cb = (void **)msg->cb;
13875
13876         cb[0] = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
13877         if (!cb[0]) {
13878                 nlmsg_free(msg);
13879                 return NULL;
13880         }
13881
13882         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13883             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
13884                 goto nla_put_failure;
13885
13886         if (mac && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
13887                 goto nla_put_failure;
13888
13889         cb[1] = nla_nest_start(msg, NL80211_ATTR_CQM);
13890         if (!cb[1])
13891                 goto nla_put_failure;
13892
13893         cb[2] = rdev;
13894
13895         return msg;
13896  nla_put_failure:
13897         nlmsg_free(msg);
13898         return NULL;
13899 }
13900
13901 static void cfg80211_send_cqm(struct sk_buff *msg, gfp_t gfp)
13902 {
13903         void **cb = (void **)msg->cb;
13904         struct cfg80211_registered_device *rdev = cb[2];
13905
13906         nla_nest_end(msg, cb[1]);
13907         genlmsg_end(msg, cb[0]);
13908
13909         memset(msg->cb, 0, sizeof(msg->cb));
13910
13911         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13912                                 NL80211_MCGRP_MLME, gfp);
13913 }
13914
13915 void cfg80211_cqm_rssi_notify(struct net_device *dev,
13916                               enum nl80211_cqm_rssi_threshold_event rssi_event,
13917                               gfp_t gfp)
13918 {
13919         struct sk_buff *msg;
13920
13921         trace_cfg80211_cqm_rssi_notify(dev, rssi_event);
13922
13923         if (WARN_ON(rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW &&
13924                     rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH))
13925                 return;
13926
13927         msg = cfg80211_prepare_cqm(dev, NULL, gfp);
13928         if (!msg)
13929                 return;
13930
13931         if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
13932                         rssi_event))
13933                 goto nla_put_failure;
13934
13935         cfg80211_send_cqm(msg, gfp);
13936
13937         return;
13938
13939  nla_put_failure:
13940         nlmsg_free(msg);
13941 }
13942 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify);
13943
13944 void cfg80211_cqm_txe_notify(struct net_device *dev,
13945                              const u8 *peer, u32 num_packets,
13946                              u32 rate, u32 intvl, gfp_t gfp)
13947 {
13948         struct sk_buff *msg;
13949
13950         msg = cfg80211_prepare_cqm(dev, peer, gfp);
13951         if (!msg)
13952                 return;
13953
13954         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets))
13955                 goto nla_put_failure;
13956
13957         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate))
13958                 goto nla_put_failure;
13959
13960         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl))
13961                 goto nla_put_failure;
13962
13963         cfg80211_send_cqm(msg, gfp);
13964         return;
13965
13966  nla_put_failure:
13967         nlmsg_free(msg);
13968 }
13969 EXPORT_SYMBOL(cfg80211_cqm_txe_notify);
13970
13971 void cfg80211_cqm_pktloss_notify(struct net_device *dev,
13972                                  const u8 *peer, u32 num_packets, gfp_t gfp)
13973 {
13974         struct sk_buff *msg;
13975
13976         trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets);
13977
13978         msg = cfg80211_prepare_cqm(dev, peer, gfp);
13979         if (!msg)
13980                 return;
13981
13982         if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets))
13983                 goto nla_put_failure;
13984
13985         cfg80211_send_cqm(msg, gfp);
13986         return;
13987
13988  nla_put_failure:
13989         nlmsg_free(msg);
13990 }
13991 EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify);
13992
13993 void cfg80211_cqm_beacon_loss_notify(struct net_device *dev, gfp_t gfp)
13994 {
13995         struct sk_buff *msg;
13996
13997         msg = cfg80211_prepare_cqm(dev, NULL, gfp);
13998         if (!msg)
13999                 return;
14000
14001         if (nla_put_flag(msg, NL80211_ATTR_CQM_BEACON_LOSS_EVENT))
14002                 goto nla_put_failure;
14003
14004         cfg80211_send_cqm(msg, gfp);
14005         return;
14006
14007  nla_put_failure:
14008         nlmsg_free(msg);
14009 }
14010 EXPORT_SYMBOL(cfg80211_cqm_beacon_loss_notify);
14011
14012 static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
14013                                      struct net_device *netdev, const u8 *bssid,
14014                                      const u8 *replay_ctr, gfp_t gfp)
14015 {
14016         struct sk_buff *msg;
14017         struct nlattr *rekey_attr;
14018         void *hdr;
14019
14020         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14021         if (!msg)
14022                 return;
14023
14024         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
14025         if (!hdr) {
14026                 nlmsg_free(msg);
14027                 return;
14028         }
14029
14030         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14031             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
14032             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
14033                 goto nla_put_failure;
14034
14035         rekey_attr = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA);
14036         if (!rekey_attr)
14037                 goto nla_put_failure;
14038
14039         if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR,
14040                     NL80211_REPLAY_CTR_LEN, replay_ctr))
14041                 goto nla_put_failure;
14042
14043         nla_nest_end(msg, rekey_attr);
14044
14045         genlmsg_end(msg, hdr);
14046
14047         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14048                                 NL80211_MCGRP_MLME, gfp);
14049         return;
14050
14051  nla_put_failure:
14052         genlmsg_cancel(msg, hdr);
14053         nlmsg_free(msg);
14054 }
14055
14056 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid,
14057                                const u8 *replay_ctr, gfp_t gfp)
14058 {
14059         struct wireless_dev *wdev = dev->ieee80211_ptr;
14060         struct wiphy *wiphy = wdev->wiphy;
14061         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14062
14063         trace_cfg80211_gtk_rekey_notify(dev, bssid);
14064         nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp);
14065 }
14066 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify);
14067
14068 static void
14069 nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
14070                                struct net_device *netdev, int index,
14071                                const u8 *bssid, bool preauth, gfp_t gfp)
14072 {
14073         struct sk_buff *msg;
14074         struct nlattr *attr;
14075         void *hdr;
14076
14077         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14078         if (!msg)
14079                 return;
14080
14081         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
14082         if (!hdr) {
14083                 nlmsg_free(msg);
14084                 return;
14085         }
14086
14087         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14088             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
14089                 goto nla_put_failure;
14090
14091         attr = nla_nest_start(msg, NL80211_ATTR_PMKSA_CANDIDATE);
14092         if (!attr)
14093                 goto nla_put_failure;
14094
14095         if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) ||
14096             nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) ||
14097             (preauth &&
14098              nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH)))
14099                 goto nla_put_failure;
14100
14101         nla_nest_end(msg, attr);
14102
14103         genlmsg_end(msg, hdr);
14104
14105         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14106                                 NL80211_MCGRP_MLME, gfp);
14107         return;
14108
14109  nla_put_failure:
14110         genlmsg_cancel(msg, hdr);
14111         nlmsg_free(msg);
14112 }
14113
14114 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index,
14115                                      const u8 *bssid, bool preauth, gfp_t gfp)
14116 {
14117         struct wireless_dev *wdev = dev->ieee80211_ptr;
14118         struct wiphy *wiphy = wdev->wiphy;
14119         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14120
14121         trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth);
14122         nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp);
14123 }
14124 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify);
14125
14126 static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev,
14127                                      struct net_device *netdev,
14128                                      struct cfg80211_chan_def *chandef,
14129                                      gfp_t gfp,
14130                                      enum nl80211_commands notif,
14131                                      u8 count)
14132 {
14133         struct sk_buff *msg;
14134         void *hdr;
14135
14136         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14137         if (!msg)
14138                 return;
14139
14140         hdr = nl80211hdr_put(msg, 0, 0, 0, notif);
14141         if (!hdr) {
14142                 nlmsg_free(msg);
14143                 return;
14144         }
14145
14146         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
14147                 goto nla_put_failure;
14148
14149         if (nl80211_send_chandef(msg, chandef))
14150                 goto nla_put_failure;
14151
14152         if ((notif == NL80211_CMD_CH_SWITCH_STARTED_NOTIFY) &&
14153             (nla_put_u32(msg, NL80211_ATTR_CH_SWITCH_COUNT, count)))
14154                         goto nla_put_failure;
14155
14156         genlmsg_end(msg, hdr);
14157
14158         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14159                                 NL80211_MCGRP_MLME, gfp);
14160         return;
14161
14162  nla_put_failure:
14163         genlmsg_cancel(msg, hdr);
14164         nlmsg_free(msg);
14165 }
14166
14167 void cfg80211_ch_switch_notify(struct net_device *dev,
14168                                struct cfg80211_chan_def *chandef)
14169 {
14170         struct wireless_dev *wdev = dev->ieee80211_ptr;
14171         struct wiphy *wiphy = wdev->wiphy;
14172         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14173
14174         ASSERT_WDEV_LOCK(wdev);
14175
14176         trace_cfg80211_ch_switch_notify(dev, chandef);
14177
14178         wdev->chandef = *chandef;
14179         wdev->preset_chandef = *chandef;
14180         nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
14181                                  NL80211_CMD_CH_SWITCH_NOTIFY, 0);
14182 }
14183 EXPORT_SYMBOL(cfg80211_ch_switch_notify);
14184
14185 void cfg80211_ch_switch_started_notify(struct net_device *dev,
14186                                        struct cfg80211_chan_def *chandef,
14187                                        u8 count)
14188 {
14189         struct wireless_dev *wdev = dev->ieee80211_ptr;
14190         struct wiphy *wiphy = wdev->wiphy;
14191         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14192
14193         trace_cfg80211_ch_switch_started_notify(dev, chandef);
14194
14195         nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
14196                                  NL80211_CMD_CH_SWITCH_STARTED_NOTIFY, count);
14197 }
14198 EXPORT_SYMBOL(cfg80211_ch_switch_started_notify);
14199
14200 void
14201 nl80211_radar_notify(struct cfg80211_registered_device *rdev,
14202                      const struct cfg80211_chan_def *chandef,
14203                      enum nl80211_radar_event event,
14204                      struct net_device *netdev, gfp_t gfp)
14205 {
14206         struct sk_buff *msg;
14207         void *hdr;
14208
14209         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14210         if (!msg)
14211                 return;
14212
14213         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT);
14214         if (!hdr) {
14215                 nlmsg_free(msg);
14216                 return;
14217         }
14218
14219         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
14220                 goto nla_put_failure;
14221
14222         /* NOP and radar events don't need a netdev parameter */
14223         if (netdev) {
14224                 struct wireless_dev *wdev = netdev->ieee80211_ptr;
14225
14226                 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
14227                     nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
14228                                       NL80211_ATTR_PAD))
14229                         goto nla_put_failure;
14230         }
14231
14232         if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event))
14233                 goto nla_put_failure;
14234
14235         if (nl80211_send_chandef(msg, chandef))
14236                 goto nla_put_failure;
14237
14238         genlmsg_end(msg, hdr);
14239
14240         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14241                                 NL80211_MCGRP_MLME, gfp);
14242         return;
14243
14244  nla_put_failure:
14245         genlmsg_cancel(msg, hdr);
14246         nlmsg_free(msg);
14247 }
14248
14249 void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
14250                            u64 cookie, bool acked, gfp_t gfp)
14251 {
14252         struct wireless_dev *wdev = dev->ieee80211_ptr;
14253         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
14254         struct sk_buff *msg;
14255         void *hdr;
14256
14257         trace_cfg80211_probe_status(dev, addr, cookie, acked);
14258
14259         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14260
14261         if (!msg)
14262                 return;
14263
14264         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT);
14265         if (!hdr) {
14266                 nlmsg_free(msg);
14267                 return;
14268         }
14269
14270         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14271             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
14272             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
14273             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
14274                               NL80211_ATTR_PAD) ||
14275             (acked && nla_put_flag(msg, NL80211_ATTR_ACK)))
14276                 goto nla_put_failure;
14277
14278         genlmsg_end(msg, hdr);
14279
14280         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14281                                 NL80211_MCGRP_MLME, gfp);
14282         return;
14283
14284  nla_put_failure:
14285         genlmsg_cancel(msg, hdr);
14286         nlmsg_free(msg);
14287 }
14288 EXPORT_SYMBOL(cfg80211_probe_status);
14289
14290 void cfg80211_report_obss_beacon(struct wiphy *wiphy,
14291                                  const u8 *frame, size_t len,
14292                                  int freq, int sig_dbm)
14293 {
14294         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14295         struct sk_buff *msg;
14296         void *hdr;
14297         struct cfg80211_beacon_registration *reg;
14298
14299         trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm);
14300
14301         spin_lock_bh(&rdev->beacon_registrations_lock);
14302         list_for_each_entry(reg, &rdev->beacon_registrations, list) {
14303                 msg = nlmsg_new(len + 100, GFP_ATOMIC);
14304                 if (!msg) {
14305                         spin_unlock_bh(&rdev->beacon_registrations_lock);
14306                         return;
14307                 }
14308
14309                 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
14310                 if (!hdr)
14311                         goto nla_put_failure;
14312
14313                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14314                     (freq &&
14315                      nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq)) ||
14316                     (sig_dbm &&
14317                      nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
14318                     nla_put(msg, NL80211_ATTR_FRAME, len, frame))
14319                         goto nla_put_failure;
14320
14321                 genlmsg_end(msg, hdr);
14322
14323                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid);
14324         }
14325         spin_unlock_bh(&rdev->beacon_registrations_lock);
14326         return;
14327
14328  nla_put_failure:
14329         spin_unlock_bh(&rdev->beacon_registrations_lock);
14330         if (hdr)
14331                 genlmsg_cancel(msg, hdr);
14332         nlmsg_free(msg);
14333 }
14334 EXPORT_SYMBOL(cfg80211_report_obss_beacon);
14335
14336 #ifdef CONFIG_PM
14337 static int cfg80211_net_detect_results(struct sk_buff *msg,
14338                                        struct cfg80211_wowlan_wakeup *wakeup)
14339 {
14340         struct cfg80211_wowlan_nd_info *nd = wakeup->net_detect;
14341         struct nlattr *nl_results, *nl_match, *nl_freqs;
14342         int i, j;
14343
14344         nl_results = nla_nest_start(
14345                 msg, NL80211_WOWLAN_TRIG_NET_DETECT_RESULTS);
14346         if (!nl_results)
14347                 return -EMSGSIZE;
14348
14349         for (i = 0; i < nd->n_matches; i++) {
14350                 struct cfg80211_wowlan_nd_match *match = nd->matches[i];
14351
14352                 nl_match = nla_nest_start(msg, i);
14353                 if (!nl_match)
14354                         break;
14355
14356                 /* The SSID attribute is optional in nl80211, but for
14357                  * simplicity reasons it's always present in the
14358                  * cfg80211 structure.  If a driver can't pass the
14359                  * SSID, that needs to be changed.  A zero length SSID
14360                  * is still a valid SSID (wildcard), so it cannot be
14361                  * used for this purpose.
14362                  */
14363                 if (nla_put(msg, NL80211_ATTR_SSID, match->ssid.ssid_len,
14364                             match->ssid.ssid)) {
14365                         nla_nest_cancel(msg, nl_match);
14366                         goto out;
14367                 }
14368
14369                 if (match->n_channels) {
14370                         nl_freqs = nla_nest_start(
14371                                 msg, NL80211_ATTR_SCAN_FREQUENCIES);
14372                         if (!nl_freqs) {
14373                                 nla_nest_cancel(msg, nl_match);
14374                                 goto out;
14375                         }
14376
14377                         for (j = 0; j < match->n_channels; j++) {
14378                                 if (nla_put_u32(msg, j, match->channels[j])) {
14379                                         nla_nest_cancel(msg, nl_freqs);
14380                                         nla_nest_cancel(msg, nl_match);
14381                                         goto out;
14382                                 }
14383                         }
14384
14385                         nla_nest_end(msg, nl_freqs);
14386                 }
14387
14388                 nla_nest_end(msg, nl_match);
14389         }
14390
14391 out:
14392         nla_nest_end(msg, nl_results);
14393         return 0;
14394 }
14395
14396 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev,
14397                                    struct cfg80211_wowlan_wakeup *wakeup,
14398                                    gfp_t gfp)
14399 {
14400         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
14401         struct sk_buff *msg;
14402         void *hdr;
14403         int size = 200;
14404
14405         trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup);
14406
14407         if (wakeup)
14408                 size += wakeup->packet_present_len;
14409
14410         msg = nlmsg_new(size, gfp);
14411         if (!msg)
14412                 return;
14413
14414         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN);
14415         if (!hdr)
14416                 goto free_msg;
14417
14418         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14419             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
14420                               NL80211_ATTR_PAD))
14421                 goto free_msg;
14422
14423         if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
14424                                         wdev->netdev->ifindex))
14425                 goto free_msg;
14426
14427         if (wakeup) {
14428                 struct nlattr *reasons;
14429
14430                 reasons = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
14431                 if (!reasons)
14432                         goto free_msg;
14433
14434                 if (wakeup->disconnect &&
14435                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT))
14436                         goto free_msg;
14437                 if (wakeup->magic_pkt &&
14438                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT))
14439                         goto free_msg;
14440                 if (wakeup->gtk_rekey_failure &&
14441                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE))
14442                         goto free_msg;
14443                 if (wakeup->eap_identity_req &&
14444                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST))
14445                         goto free_msg;
14446                 if (wakeup->four_way_handshake &&
14447                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE))
14448                         goto free_msg;
14449                 if (wakeup->rfkill_release &&
14450                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))
14451                         goto free_msg;
14452
14453                 if (wakeup->pattern_idx >= 0 &&
14454                     nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
14455                                 wakeup->pattern_idx))
14456                         goto free_msg;
14457
14458                 if (wakeup->tcp_match &&
14459                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH))
14460                         goto free_msg;
14461
14462                 if (wakeup->tcp_connlost &&
14463                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST))
14464                         goto free_msg;
14465
14466                 if (wakeup->tcp_nomoretokens &&
14467                     nla_put_flag(msg,
14468                                  NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS))
14469                         goto free_msg;
14470
14471                 if (wakeup->packet) {
14472                         u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211;
14473                         u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN;
14474
14475                         if (!wakeup->packet_80211) {
14476                                 pkt_attr =
14477                                         NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023;
14478                                 len_attr =
14479                                         NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN;
14480                         }
14481
14482                         if (wakeup->packet_len &&
14483                             nla_put_u32(msg, len_attr, wakeup->packet_len))
14484                                 goto free_msg;
14485
14486                         if (nla_put(msg, pkt_attr, wakeup->packet_present_len,
14487                                     wakeup->packet))
14488                                 goto free_msg;
14489                 }
14490
14491                 if (wakeup->net_detect &&
14492                     cfg80211_net_detect_results(msg, wakeup))
14493                                 goto free_msg;
14494
14495                 nla_nest_end(msg, reasons);
14496         }
14497
14498         genlmsg_end(msg, hdr);
14499
14500         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14501                                 NL80211_MCGRP_MLME, gfp);
14502         return;
14503
14504  free_msg:
14505         nlmsg_free(msg);
14506 }
14507 EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup);
14508 #endif
14509
14510 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer,
14511                                 enum nl80211_tdls_operation oper,
14512                                 u16 reason_code, gfp_t gfp)
14513 {
14514         struct wireless_dev *wdev = dev->ieee80211_ptr;
14515         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
14516         struct sk_buff *msg;
14517         void *hdr;
14518
14519         trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper,
14520                                          reason_code);
14521
14522         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14523         if (!msg)
14524                 return;
14525
14526         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER);
14527         if (!hdr) {
14528                 nlmsg_free(msg);
14529                 return;
14530         }
14531
14532         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14533             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
14534             nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) ||
14535             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) ||
14536             (reason_code > 0 &&
14537              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code)))
14538                 goto nla_put_failure;
14539
14540         genlmsg_end(msg, hdr);
14541
14542         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14543                                 NL80211_MCGRP_MLME, gfp);
14544         return;
14545
14546  nla_put_failure:
14547         genlmsg_cancel(msg, hdr);
14548         nlmsg_free(msg);
14549 }
14550 EXPORT_SYMBOL(cfg80211_tdls_oper_request);
14551
14552 static int nl80211_netlink_notify(struct notifier_block * nb,
14553                                   unsigned long state,
14554                                   void *_notify)
14555 {
14556         struct netlink_notify *notify = _notify;
14557         struct cfg80211_registered_device *rdev;
14558         struct wireless_dev *wdev;
14559         struct cfg80211_beacon_registration *reg, *tmp;
14560
14561         if (state != NETLINK_URELEASE || notify->protocol != NETLINK_GENERIC)
14562                 return NOTIFY_DONE;
14563
14564         rcu_read_lock();
14565
14566         list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
14567                 bool schedule_destroy_work = false;
14568                 struct cfg80211_sched_scan_request *sched_scan_req =
14569                         rcu_dereference(rdev->sched_scan_req);
14570
14571                 if (sched_scan_req && notify->portid &&
14572                     sched_scan_req->owner_nlportid == notify->portid) {
14573                         sched_scan_req->owner_nlportid = 0;
14574
14575                         if (rdev->ops->sched_scan_stop &&
14576                             rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN)
14577                                 schedule_work(&rdev->sched_scan_stop_wk);
14578                 }
14579
14580                 list_for_each_entry_rcu(wdev, &rdev->wiphy.wdev_list, list) {
14581                         cfg80211_mlme_unregister_socket(wdev, notify->portid);
14582
14583                         if (wdev->owner_nlportid == notify->portid)
14584                                 schedule_destroy_work = true;
14585                         else if (wdev->conn_owner_nlportid == notify->portid)
14586                                 schedule_work(&wdev->disconnect_wk);
14587                 }
14588
14589                 spin_lock_bh(&rdev->beacon_registrations_lock);
14590                 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations,
14591                                          list) {
14592                         if (reg->nlportid == notify->portid) {
14593                                 list_del(&reg->list);
14594                                 kfree(reg);
14595                                 break;
14596                         }
14597                 }
14598                 spin_unlock_bh(&rdev->beacon_registrations_lock);
14599
14600                 if (schedule_destroy_work) {
14601                         struct cfg80211_iface_destroy *destroy;
14602
14603                         destroy = kzalloc(sizeof(*destroy), GFP_ATOMIC);
14604                         if (destroy) {
14605                                 destroy->nlportid = notify->portid;
14606                                 spin_lock(&rdev->destroy_list_lock);
14607                                 list_add(&destroy->list, &rdev->destroy_list);
14608                                 spin_unlock(&rdev->destroy_list_lock);
14609                                 schedule_work(&rdev->destroy_work);
14610                         }
14611                 }
14612         }
14613
14614         rcu_read_unlock();
14615
14616         /*
14617          * It is possible that the user space process that is controlling the
14618          * indoor setting disappeared, so notify the regulatory core.
14619          */
14620         regulatory_netlink_notify(notify->portid);
14621         return NOTIFY_OK;
14622 }
14623
14624 static struct notifier_block nl80211_netlink_notifier = {
14625         .notifier_call = nl80211_netlink_notify,
14626 };
14627
14628 void cfg80211_ft_event(struct net_device *netdev,
14629                        struct cfg80211_ft_event_params *ft_event)
14630 {
14631         struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
14632         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14633         struct sk_buff *msg;
14634         void *hdr;
14635
14636         trace_cfg80211_ft_event(wiphy, netdev, ft_event);
14637
14638         if (!ft_event->target_ap)
14639                 return;
14640
14641         msg = nlmsg_new(100 + ft_event->ric_ies_len, GFP_KERNEL);
14642         if (!msg)
14643                 return;
14644
14645         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT);
14646         if (!hdr)
14647                 goto out;
14648
14649         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14650             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
14651             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap))
14652                 goto out;
14653
14654         if (ft_event->ies &&
14655             nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies))
14656                 goto out;
14657         if (ft_event->ric_ies &&
14658             nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len,
14659                     ft_event->ric_ies))
14660                 goto out;
14661
14662         genlmsg_end(msg, hdr);
14663
14664         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14665                                 NL80211_MCGRP_MLME, GFP_KERNEL);
14666         return;
14667  out:
14668         nlmsg_free(msg);
14669 }
14670 EXPORT_SYMBOL(cfg80211_ft_event);
14671
14672 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp)
14673 {
14674         struct cfg80211_registered_device *rdev;
14675         struct sk_buff *msg;
14676         void *hdr;
14677         u32 nlportid;
14678
14679         rdev = wiphy_to_rdev(wdev->wiphy);
14680         if (!rdev->crit_proto_nlportid)
14681                 return;
14682
14683         nlportid = rdev->crit_proto_nlportid;
14684         rdev->crit_proto_nlportid = 0;
14685
14686         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14687         if (!msg)
14688                 return;
14689
14690         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP);
14691         if (!hdr)
14692                 goto nla_put_failure;
14693
14694         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14695             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
14696                               NL80211_ATTR_PAD))
14697                 goto nla_put_failure;
14698
14699         genlmsg_end(msg, hdr);
14700
14701         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
14702         return;
14703
14704  nla_put_failure:
14705         if (hdr)
14706                 genlmsg_cancel(msg, hdr);
14707         nlmsg_free(msg);
14708 }
14709 EXPORT_SYMBOL(cfg80211_crit_proto_stopped);
14710
14711 void nl80211_send_ap_stopped(struct wireless_dev *wdev)
14712 {
14713         struct wiphy *wiphy = wdev->wiphy;
14714         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14715         struct sk_buff *msg;
14716         void *hdr;
14717
14718         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14719         if (!msg)
14720                 return;
14721
14722         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STOP_AP);
14723         if (!hdr)
14724                 goto out;
14725
14726         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14727             nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex) ||
14728             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
14729                               NL80211_ATTR_PAD))
14730                 goto out;
14731
14732         genlmsg_end(msg, hdr);
14733
14734         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(wiphy), msg, 0,
14735                                 NL80211_MCGRP_MLME, GFP_KERNEL);
14736         return;
14737  out:
14738         nlmsg_free(msg);
14739 }
14740
14741 /* initialisation/exit functions */
14742
14743 int __init nl80211_init(void)
14744 {
14745         int err;
14746
14747         err = genl_register_family(&nl80211_fam);
14748         if (err)
14749                 return err;
14750
14751         err = netlink_register_notifier(&nl80211_netlink_notifier);
14752         if (err)
14753                 goto err_out;
14754
14755         return 0;
14756  err_out:
14757         genl_unregister_family(&nl80211_fam);
14758         return err;
14759 }
14760
14761 void nl80211_exit(void)
14762 {
14763         netlink_unregister_notifier(&nl80211_netlink_notifier);
14764         genl_unregister_family(&nl80211_fam);
14765 }