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 2015-2017  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] = { .len = WLAN_PMKID_LEN },
 295         [NL80211_ATTR_DURATION] = { .type = NLA_U32 },
 296         [NL80211_ATTR_COOKIE] = { .type = NLA_U64 },
 297         [NL80211_ATTR_TX_RATES] = { .type = NLA_NESTED },
 298         [NL80211_ATTR_FRAME] = { .type = NLA_BINARY,
 299                                  .len = IEEE80211_MAX_DATA_LEN },
 300         [NL80211_ATTR_FRAME_MATCH] = { .type = NLA_BINARY, },
 301         [NL80211_ATTR_PS_STATE] = { .type = NLA_U32 },
 302         [NL80211_ATTR_CQM] = { .type = NLA_NESTED, },
 303         [NL80211_ATTR_LOCAL_STATE_CHANGE] = { .type = NLA_FLAG },
 304         [NL80211_ATTR_AP_ISOLATE] = { .type = NLA_U8 },
 305         [NL80211_ATTR_WIPHY_TX_POWER_SETTING] = { .type = NLA_U32 },
 306         [NL80211_ATTR_WIPHY_TX_POWER_LEVEL] = { .type = NLA_U32 },
 307         [NL80211_ATTR_FRAME_TYPE] = { .type = NLA_U16 },
 308         [NL80211_ATTR_WIPHY_ANTENNA_TX] = { .type = NLA_U32 },
 309         [NL80211_ATTR_WIPHY_ANTENNA_RX] = { .type = NLA_U32 },
 310         [NL80211_ATTR_MCAST_RATE] = { .type = NLA_U32 },
 311         [NL80211_ATTR_OFFCHANNEL_TX_OK] = { .type = NLA_FLAG },
 312         [NL80211_ATTR_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
 313         [NL80211_ATTR_WOWLAN_TRIGGERS] = { .type = NLA_NESTED },
 314         [NL80211_ATTR_STA_PLINK_STATE] = { .type = NLA_U8 },
 315         [NL80211_ATTR_SCHED_SCAN_INTERVAL] = { .type = NLA_U32 },
 316         [NL80211_ATTR_REKEY_DATA] = { .type = NLA_NESTED },
 317         [NL80211_ATTR_SCAN_SUPP_RATES] = { .type = NLA_NESTED },
 318         [NL80211_ATTR_HIDDEN_SSID] = { .type = NLA_U32 },
 319         [NL80211_ATTR_IE_PROBE_RESP] = { .type = NLA_BINARY,
 320                                          .len = IEEE80211_MAX_DATA_LEN },
 321         [NL80211_ATTR_IE_ASSOC_RESP] = { .type = NLA_BINARY,
 322                                          .len = IEEE80211_MAX_DATA_LEN },
 323         [NL80211_ATTR_ROAM_SUPPORT] = { .type = NLA_FLAG },
 324         [NL80211_ATTR_SCHED_SCAN_MATCH] = { .type = NLA_NESTED },
 325         [NL80211_ATTR_TX_NO_CCK_RATE] = { .type = NLA_FLAG },
 326         [NL80211_ATTR_TDLS_ACTION] = { .type = NLA_U8 },
 327         [NL80211_ATTR_TDLS_DIALOG_TOKEN] = { .type = NLA_U8 },
 328         [NL80211_ATTR_TDLS_OPERATION] = { .type = NLA_U8 },
 329         [NL80211_ATTR_TDLS_SUPPORT] = { .type = NLA_FLAG },
 330         [NL80211_ATTR_TDLS_EXTERNAL_SETUP] = { .type = NLA_FLAG },
 331         [NL80211_ATTR_TDLS_INITIATOR] = { .type = NLA_FLAG },
 332         [NL80211_ATTR_DONT_WAIT_FOR_ACK] = { .type = NLA_FLAG },
 333         [NL80211_ATTR_PROBE_RESP] = { .type = NLA_BINARY,
 334                                       .len = IEEE80211_MAX_DATA_LEN },
 335         [NL80211_ATTR_DFS_REGION] = { .type = NLA_U8 },
 336         [NL80211_ATTR_DISABLE_HT] = { .type = NLA_FLAG },
 337         [NL80211_ATTR_HT_CAPABILITY_MASK] = {
 338                 .len = NL80211_HT_CAPABILITY_LEN
 339         },
 340         [NL80211_ATTR_NOACK_MAP] = { .type = NLA_U16 },
 341         [NL80211_ATTR_INACTIVITY_TIMEOUT] = { .type = NLA_U16 },
 342         [NL80211_ATTR_BG_SCAN_PERIOD] = { .type = NLA_U16 },
 343         [NL80211_ATTR_WDEV] = { .type = NLA_U64 },
 344         [NL80211_ATTR_USER_REG_HINT_TYPE] = { .type = NLA_U32 },
 345         [NL80211_ATTR_AUTH_DATA] = { .type = NLA_BINARY, },
 346         [NL80211_ATTR_VHT_CAPABILITY] = { .len = NL80211_VHT_CAPABILITY_LEN },
 347         [NL80211_ATTR_SCAN_FLAGS] = { .type = NLA_U32 },
 348         [NL80211_ATTR_P2P_CTWINDOW] = { .type = NLA_U8 },
 349         [NL80211_ATTR_P2P_OPPPS] = { .type = NLA_U8 },
 350         [NL80211_ATTR_LOCAL_MESH_POWER_MODE] = {. type = NLA_U32 },
 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_BANDS] = { .type = NLA_U32 },
 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         [NL80211_ATTR_FILS_ERP_USERNAME] = { .type = NLA_BINARY,
 414                                              .len = FILS_ERP_MAX_USERNAME_LEN },
 415         [NL80211_ATTR_FILS_ERP_REALM] = { .type = NLA_BINARY,
 416                                           .len = FILS_ERP_MAX_REALM_LEN },
 417         [NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] = { .type = NLA_U16 },
 418         [NL80211_ATTR_FILS_ERP_RRK] = { .type = NLA_BINARY,
 419                                         .len = FILS_ERP_MAX_RRK_LEN },
 420         [NL80211_ATTR_FILS_CACHE_ID] = { .len = 2 },
 421         [NL80211_ATTR_PMK] = { .type = NLA_BINARY, .len = PMK_MAX_LEN },
 422         [NL80211_ATTR_SCHED_SCAN_MULTI] = { .type = NLA_FLAG },
 423 };
 424
 425 /* policy for the key attributes */
 426 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = {
 427         [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN },
 428         [NL80211_KEY_IDX] = { .type = NLA_U8 },
 429         [NL80211_KEY_CIPHER] = { .type = NLA_U32 },
 430         [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
 431         [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG },
 432         [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG },
 433         [NL80211_KEY_TYPE] = { .type = NLA_U32 },
 434         [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
 435 };
 436
 437 /* policy for the key default flags */
 438 static const struct nla_policy
 439 nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = {
 440         [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG },
 441         [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG },
 442 };
 443
 444 #ifdef CONFIG_PM
 445 /* policy for WoWLAN attributes */
 446 static const struct nla_policy
 447 nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = {
 448         [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG },
 449         [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG },
 450         [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG },
 451         [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED },
 452         [NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG },
 453         [NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG },
 454         [NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG },
 455         [NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG },
 456         [NL80211_WOWLAN_TRIG_TCP_CONNECTION] = { .type = NLA_NESTED },
 457         [NL80211_WOWLAN_TRIG_NET_DETECT] = { .type = NLA_NESTED },
 458 };
 459
 460 static const struct nla_policy
 461 nl80211_wowlan_tcp_policy[NUM_NL80211_WOWLAN_TCP] = {
 462         [NL80211_WOWLAN_TCP_SRC_IPV4] = { .type = NLA_U32 },
 463         [NL80211_WOWLAN_TCP_DST_IPV4] = { .type = NLA_U32 },
 464         [NL80211_WOWLAN_TCP_DST_MAC] = { .len = ETH_ALEN },
 465         [NL80211_WOWLAN_TCP_SRC_PORT] = { .type = NLA_U16 },
 466         [NL80211_WOWLAN_TCP_DST_PORT] = { .type = NLA_U16 },
 467         [NL80211_WOWLAN_TCP_DATA_PAYLOAD] = { .len = 1 },
 468         [NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ] = {
 469                 .len = sizeof(struct nl80211_wowlan_tcp_data_seq)
 470         },
 471         [NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN] = {
 472                 .len = sizeof(struct nl80211_wowlan_tcp_data_token)
 473         },
 474         [NL80211_WOWLAN_TCP_DATA_INTERVAL] = { .type = NLA_U32 },
 475         [NL80211_WOWLAN_TCP_WAKE_PAYLOAD] = { .len = 1 },
 476         [NL80211_WOWLAN_TCP_WAKE_MASK] = { .len = 1 },
 477 };
 478 #endif /* CONFIG_PM */
 479
 480 /* policy for coalesce rule attributes */
 481 static const struct nla_policy
 482 nl80211_coalesce_policy[NUM_NL80211_ATTR_COALESCE_RULE] = {
 483         [NL80211_ATTR_COALESCE_RULE_DELAY] = { .type = NLA_U32 },
 484         [NL80211_ATTR_COALESCE_RULE_CONDITION] = { .type = NLA_U32 },
 485         [NL80211_ATTR_COALESCE_RULE_PKT_PATTERN] = { .type = NLA_NESTED },
 486 };
 487
 488 /* policy for GTK rekey offload attributes */
 489 static const struct nla_policy
 490 nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = {
 491         [NL80211_REKEY_DATA_KEK] = { .len = NL80211_KEK_LEN },
 492         [NL80211_REKEY_DATA_KCK] = { .len = NL80211_KCK_LEN },
 493         [NL80211_REKEY_DATA_REPLAY_CTR] = { .len = NL80211_REPLAY_CTR_LEN },
 494 };
 495
 496 static const struct nla_policy
 497 nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = {
 498         [NL80211_SCHED_SCAN_MATCH_ATTR_SSID] = { .type = NLA_BINARY,
 499                                                  .len = IEEE80211_MAX_SSID_LEN },
 500         [NL80211_SCHED_SCAN_MATCH_ATTR_BSSID] = { .len = ETH_ALEN },
 501         [NL80211_SCHED_SCAN_MATCH_ATTR_RSSI] = { .type = NLA_U32 },
 502 };
 503
 504 static const struct nla_policy
 505 nl80211_plan_policy[NL80211_SCHED_SCAN_PLAN_MAX + 1] = {
 506         [NL80211_SCHED_SCAN_PLAN_INTERVAL] = { .type = NLA_U32 },
 507         [NL80211_SCHED_SCAN_PLAN_ITERATIONS] = { .type = NLA_U32 },
 508 };
 509
 510 static const struct nla_policy
 511 nl80211_bss_select_policy[NL80211_BSS_SELECT_ATTR_MAX + 1] = {
 512         [NL80211_BSS_SELECT_ATTR_RSSI] = { .type = NLA_FLAG },
 513         [NL80211_BSS_SELECT_ATTR_BAND_PREF] = { .type = NLA_U32 },
 514         [NL80211_BSS_SELECT_ATTR_RSSI_ADJUST] = {
 515                 .len = sizeof(struct nl80211_bss_select_rssi_adjust)
 516         },
 517 };
 518
 519 /* policy for NAN function attributes */
 520 static const struct nla_policy
 521 nl80211_nan_func_policy[NL80211_NAN_FUNC_ATTR_MAX + 1] = {
 522         [NL80211_NAN_FUNC_TYPE] = { .type = NLA_U8 },
 523         [NL80211_NAN_FUNC_SERVICE_ID] = {
 524                                     .len = NL80211_NAN_FUNC_SERVICE_ID_LEN },
 525         [NL80211_NAN_FUNC_PUBLISH_TYPE] = { .type = NLA_U8 },
 526         [NL80211_NAN_FUNC_PUBLISH_BCAST] = { .type = NLA_FLAG },
 527         [NL80211_NAN_FUNC_SUBSCRIBE_ACTIVE] = { .type = NLA_FLAG },
 528         [NL80211_NAN_FUNC_FOLLOW_UP_ID] = { .type = NLA_U8 },
 529         [NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID] = { .type = NLA_U8 },
 530         [NL80211_NAN_FUNC_FOLLOW_UP_DEST] = { .len = ETH_ALEN },
 531         [NL80211_NAN_FUNC_CLOSE_RANGE] = { .type = NLA_FLAG },
 532         [NL80211_NAN_FUNC_TTL] = { .type = NLA_U32 },
 533         [NL80211_NAN_FUNC_SERVICE_INFO] = { .type = NLA_BINARY,
 534                         .len = NL80211_NAN_FUNC_SERVICE_SPEC_INFO_MAX_LEN },
 535         [NL80211_NAN_FUNC_SRF] = { .type = NLA_NESTED },
 536         [NL80211_NAN_FUNC_RX_MATCH_FILTER] = { .type = NLA_NESTED },
 537         [NL80211_NAN_FUNC_TX_MATCH_FILTER] = { .type = NLA_NESTED },
 538         [NL80211_NAN_FUNC_INSTANCE_ID] = { .type = NLA_U8 },
 539         [NL80211_NAN_FUNC_TERM_REASON] = { .type = NLA_U8 },
 540 };
 541
 542 /* policy for Service Response Filter attributes */
 543 static const struct nla_policy
 544 nl80211_nan_srf_policy[NL80211_NAN_SRF_ATTR_MAX + 1] = {
 545         [NL80211_NAN_SRF_INCLUDE] = { .type = NLA_FLAG },
 546         [NL80211_NAN_SRF_BF] = { .type = NLA_BINARY,
 547                                  .len =  NL80211_NAN_FUNC_SRF_MAX_LEN },
 548         [NL80211_NAN_SRF_BF_IDX] = { .type = NLA_U8 },
 549         [NL80211_NAN_SRF_MAC_ADDRS] = { .type = NLA_NESTED },
 550 };
 551
 552 static int nl80211_prepare_wdev_dump(struct sk_buff *skb,
 553                                      struct netlink_callback *cb,
 554                                      struct cfg80211_registered_device **rdev,
 555                                      struct wireless_dev **wdev)
 556 {
 557         int err;
 558
 559         if (!cb->args[0]) {
 560                 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
 561                                   genl_family_attrbuf(&nl80211_fam),
 562                                   nl80211_fam.maxattr, nl80211_policy, NULL);
 563                 if (err)
 564                         return err;
 565
 566                 *wdev = __cfg80211_wdev_from_attrs(
 567                                         sock_net(skb->sk),
 568                                         genl_family_attrbuf(&nl80211_fam));
 569                 if (IS_ERR(*wdev))
 570                         return PTR_ERR(*wdev);
 571                 *rdev = wiphy_to_rdev((*wdev)->wiphy);
 572                 /* 0 is the first index - add 1 to parse only once */
 573                 cb->args[0] = (*rdev)->wiphy_idx + 1;
 574                 cb->args[1] = (*wdev)->identifier;
 575         } else {
 576                 /* subtract the 1 again here */
 577                 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
 578                 struct wireless_dev *tmp;
 579
 580                 if (!wiphy)
 581                         return -ENODEV;
 582                 *rdev = wiphy_to_rdev(wiphy);
 583                 *wdev = NULL;
 584
 585                 list_for_each_entry(tmp, &(*rdev)->wiphy.wdev_list, list) {
 586                         if (tmp->identifier == cb->args[1]) {
 587                                 *wdev = tmp;
 588                                 break;
 589                         }
 590                 }
 591
 592                 if (!*wdev)
 593                         return -ENODEV;
 594         }
 595
 596         return 0;
 597 }
 598
 599 /* IE validation */
 600 static bool is_valid_ie_attr(const struct nlattr *attr)
 601 {
 602         const u8 *pos;
 603         int len;
 604
 605         if (!attr)
 606                 return true;
 607
 608         pos = nla_data(attr);
 609         len = nla_len(attr);
 610
 611         while (len) {
 612                 u8 elemlen;
 613
 614                 if (len < 2)
 615                         return false;
 616                 len -= 2;
 617
 618                 elemlen = pos[1];
 619                 if (elemlen > len)
 620                         return false;
 621
 622                 len -= elemlen;
 623                 pos += 2 + elemlen;
 624         }
 625
 626         return true;
 627 }
 628
 629 /* message building helper */
 630 static inline void *nl80211hdr_put(struct sk_buff *skb, u32 portid, u32 seq,
 631                                    int flags, u8 cmd)
 632 {
 633         /* since there is no private header just add the generic one */
 634         return genlmsg_put(skb, portid, seq, &nl80211_fam, flags, cmd);
 635 }
 636
 637 static int nl80211_msg_put_channel(struct sk_buff *msg,
 638                                    struct ieee80211_channel *chan,
 639                                    bool large)
 640 {
 641         /* Some channels must be completely excluded from the
 642          * list to protect old user-space tools from breaking
 643          */
 644         if (!large && chan->flags &
 645             (IEEE80211_CHAN_NO_10MHZ | IEEE80211_CHAN_NO_20MHZ))
 646                 return 0;
 647
 648         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ,
 649                         chan->center_freq))
 650                 goto nla_put_failure;
 651
 652         if ((chan->flags & IEEE80211_CHAN_DISABLED) &&
 653             nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED))
 654                 goto nla_put_failure;
 655         if (chan->flags & IEEE80211_CHAN_NO_IR) {
 656                 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IR))
 657                         goto nla_put_failure;
 658                 if (nla_put_flag(msg, __NL80211_FREQUENCY_ATTR_NO_IBSS))
 659                         goto nla_put_failure;
 660         }
 661         if (chan->flags & IEEE80211_CHAN_RADAR) {
 662                 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR))
 663                         goto nla_put_failure;
 664                 if (large) {
 665                         u32 time;
 666
 667                         time = elapsed_jiffies_msecs(chan->dfs_state_entered);
 668
 669                         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_STATE,
 670                                         chan->dfs_state))
 671                                 goto nla_put_failure;
 672                         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_TIME,
 673                                         time))
 674                                 goto nla_put_failure;
 675                         if (nla_put_u32(msg,
 676                                         NL80211_FREQUENCY_ATTR_DFS_CAC_TIME,
 677                                         chan->dfs_cac_ms))
 678                                 goto nla_put_failure;
 679                 }
 680         }
 681
 682         if (large) {
 683                 if ((chan->flags & IEEE80211_CHAN_NO_HT40MINUS) &&
 684                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_MINUS))
 685                         goto nla_put_failure;
 686                 if ((chan->flags & IEEE80211_CHAN_NO_HT40PLUS) &&
 687                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_PLUS))
 688                         goto nla_put_failure;
 689                 if ((chan->flags & IEEE80211_CHAN_NO_80MHZ) &&
 690                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_80MHZ))
 691                         goto nla_put_failure;
 692                 if ((chan->flags & IEEE80211_CHAN_NO_160MHZ) &&
 693                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_160MHZ))
 694                         goto nla_put_failure;
 695                 if ((chan->flags & IEEE80211_CHAN_INDOOR_ONLY) &&
 696                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_INDOOR_ONLY))
 697                         goto nla_put_failure;
 698                 if ((chan->flags & IEEE80211_CHAN_IR_CONCURRENT) &&
 699                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_IR_CONCURRENT))
 700                         goto nla_put_failure;
 701                 if ((chan->flags & IEEE80211_CHAN_NO_20MHZ) &&
 702                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_20MHZ))
 703                         goto nla_put_failure;
 704                 if ((chan->flags & IEEE80211_CHAN_NO_10MHZ) &&
 705                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_10MHZ))
 706                         goto nla_put_failure;
 707         }
 708
 709         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
 710                         DBM_TO_MBM(chan->max_power)))
 711                 goto nla_put_failure;
 712
 713         return 0;
 714
 715  nla_put_failure:
 716         return -ENOBUFS;
 717 }
 718
 719 /* netlink command implementations */
 720
 721 struct key_parse {
 722         struct key_params p;
 723         int idx;
 724         int type;
 725         bool def, defmgmt;
 726         bool def_uni, def_multi;
 727 };
 728
 729 static int nl80211_parse_key_new(struct nlattr *key, struct key_parse *k)
 730 {
 731         struct nlattr *tb[NL80211_KEY_MAX + 1];
 732         int err = nla_parse_nested(tb, NL80211_KEY_MAX, key,
 733                                    nl80211_key_policy, NULL);
 734         if (err)
 735                 return err;
 736
 737         k->def = !!tb[NL80211_KEY_DEFAULT];
 738         k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];
 739
 740         if (k->def) {
 741                 k->def_uni = true;
 742                 k->def_multi = true;
 743         }
 744         if (k->defmgmt)
 745                 k->def_multi = true;
 746
 747         if (tb[NL80211_KEY_IDX])
 748                 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);
 749
 750         if (tb[NL80211_KEY_DATA]) {
 751                 k->p.key = nla_data(tb[NL80211_KEY_DATA]);
 752                 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
 753         }
 754
 755         if (tb[NL80211_KEY_SEQ]) {
 756                 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
 757                 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
 758         }
 759
 760         if (tb[NL80211_KEY_CIPHER])
 761                 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);
 762
 763         if (tb[NL80211_KEY_TYPE]) {
 764                 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]);
 765                 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
 766                         return -EINVAL;
 767         }
 768
 769         if (tb[NL80211_KEY_DEFAULT_TYPES]) {
 770                 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
 771
 772                 err = nla_parse_nested(kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
 773                                        tb[NL80211_KEY_DEFAULT_TYPES],
 774                                        nl80211_key_default_policy, NULL);
 775                 if (err)
 776                         return err;
 777
 778                 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
 779                 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
 780         }
 781
 782         return 0;
 783 }
 784
 785 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k)
 786 {
 787         if (info->attrs[NL80211_ATTR_KEY_DATA]) {
 788                 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
 789                 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
 790         }
 791
 792         if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
 793                 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
 794                 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
 795         }
 796
 797         if (info->attrs[NL80211_ATTR_KEY_IDX])
 798                 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
 799
 800         if (info->attrs[NL80211_ATTR_KEY_CIPHER])
 801                 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
 802
 803         k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
 804         k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT];
 805
 806         if (k->def) {
 807                 k->def_uni = true;
 808                 k->def_multi = true;
 809         }
 810         if (k->defmgmt)
 811                 k->def_multi = true;
 812
 813         if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
 814                 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
 815                 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
 816                         return -EINVAL;
 817         }
 818
 819         if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) {
 820                 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
 821                 int err = nla_parse_nested(kdt,
 822                                            NUM_NL80211_KEY_DEFAULT_TYPES - 1,
 823                                            info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES],
 824                                            nl80211_key_default_policy,
 825                                            info->extack);
 826                 if (err)
 827                         return err;
 828
 829                 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
 830                 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
 831         }
 832
 833         return 0;
 834 }
 835
 836 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
 837 {
 838         int err;
 839
 840         memset(k, 0, sizeof(*k));
 841         k->idx = -1;
 842         k->type = -1;
 843
 844         if (info->attrs[NL80211_ATTR_KEY])
 845                 err = nl80211_parse_key_new(info->attrs[NL80211_ATTR_KEY], k);
 846         else
 847                 err = nl80211_parse_key_old(info, k);
 848
 849         if (err)
 850                 return err;
 851
 852         if (k->def && k->defmgmt)
 853                 return -EINVAL;
 854
 855         if (k->defmgmt) {
 856                 if (k->def_uni || !k->def_multi)
 857                         return -EINVAL;
 858         }
 859
 860         if (k->idx != -1) {
 861                 if (k->defmgmt) {
 862                         if (k->idx < 4 || k->idx > 5)
 863                                 return -EINVAL;
 864                 } else if (k->def) {
 865                         if (k->idx < 0 || k->idx > 3)
 866                                 return -EINVAL;
 867                 } else {
 868                         if (k->idx < 0 || k->idx > 5)
 869                                 return -EINVAL;
 870                 }
 871         }
 872
 873         return 0;
 874 }
 875
 876 static struct cfg80211_cached_keys *
 877 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
 878                        struct nlattr *keys, bool *no_ht)
 879 {
 880         struct key_parse parse;
 881         struct nlattr *key;
 882         struct cfg80211_cached_keys *result;
 883         int rem, err, def = 0;
 884         bool have_key = false;
 885
 886         nla_for_each_nested(key, keys, rem) {
 887                 have_key = true;
 888                 break;
 889         }
 890
 891         if (!have_key)
 892                 return NULL;
 893
 894         result = kzalloc(sizeof(*result), GFP_KERNEL);
 895         if (!result)
 896                 return ERR_PTR(-ENOMEM);
 897
 898         result->def = -1;
 899
 900         nla_for_each_nested(key, keys, rem) {
 901                 memset(&parse, 0, sizeof(parse));
 902                 parse.idx = -1;
 903
 904                 err = nl80211_parse_key_new(key, &parse);
 905                 if (err)
 906                         goto error;
 907                 err = -EINVAL;
 908                 if (!parse.p.key)
 909                         goto error;
 910                 if (parse.idx < 0 || parse.idx > 3)
 911                         goto error;
 912                 if (parse.def) {
 913                         if (def)
 914                                 goto error;
 915                         def = 1;
 916                         result->def = parse.idx;
 917                         if (!parse.def_uni || !parse.def_multi)
 918                                 goto error;
 919                 } else if (parse.defmgmt)
 920                         goto error;
 921                 err = cfg80211_validate_key_settings(rdev, &parse.p,
 922                                                      parse.idx, false, NULL);
 923                 if (err)
 924                         goto error;
 925                 if (parse.p.cipher != WLAN_CIPHER_SUITE_WEP40 &&
 926                     parse.p.cipher != WLAN_CIPHER_SUITE_WEP104) {
 927                         err = -EINVAL;
 928                         goto error;
 929                 }
 930                 result->params[parse.idx].cipher = parse.p.cipher;
 931                 result->params[parse.idx].key_len = parse.p.key_len;
 932                 result->params[parse.idx].key = result->data[parse.idx];
 933                 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
 934
 935                 /* must be WEP key if we got here */
 936                 if (no_ht)
 937                         *no_ht = true;
 938         }
 939
 940         if (result->def < 0) {
 941                 err = -EINVAL;
 942                 goto error;
 943         }
 944
 945         return result;
 946  error:
 947         kfree(result);
 948         return ERR_PTR(err);
 949 }
 950
 951 static int nl80211_key_allowed(struct wireless_dev *wdev)
 952 {
 953         ASSERT_WDEV_LOCK(wdev);
 954
 955         switch (wdev->iftype) {
 956         case NL80211_IFTYPE_AP:
 957         case NL80211_IFTYPE_AP_VLAN:
 958         case NL80211_IFTYPE_P2P_GO:
 959         case NL80211_IFTYPE_MESH_POINT:
 960                 break;
 961         case NL80211_IFTYPE_ADHOC:
 962         case NL80211_IFTYPE_STATION:
 963         case NL80211_IFTYPE_P2P_CLIENT:
 964                 if (!wdev->current_bss)
 965                         return -ENOLINK;
 966                 break;
 967         case NL80211_IFTYPE_UNSPECIFIED:
 968         case NL80211_IFTYPE_OCB:
 969         case NL80211_IFTYPE_MONITOR:
 970         case NL80211_IFTYPE_NAN:
 971         case NL80211_IFTYPE_P2P_DEVICE:
 972         case NL80211_IFTYPE_WDS:
 973         case NUM_NL80211_IFTYPES:
 974                 return -EINVAL;
 975         }
 976
 977         return 0;
 978 }
 979
 980 static struct ieee80211_channel *nl80211_get_valid_chan(struct wiphy *wiphy,
 981                                                         struct nlattr *tb)
 982 {
 983         struct ieee80211_channel *chan;
 984
 985         if (tb == NULL)
 986                 return NULL;
 987         chan = ieee80211_get_channel(wiphy, nla_get_u32(tb));
 988         if (!chan || chan->flags & IEEE80211_CHAN_DISABLED)
 989                 return NULL;
 990         return chan;
 991 }
 992
 993 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes)
 994 {
 995         struct nlattr *nl_modes = nla_nest_start(msg, attr);
 996         int i;
 997
 998         if (!nl_modes)
 999                 goto nla_put_failure;
1000
1001         i = 0;
1002         while (ifmodes) {
1003                 if ((ifmodes & 1) && nla_put_flag(msg, i))
1004                         goto nla_put_failure;
1005                 ifmodes >>= 1;
1006                 i++;
1007         }
1008
1009         nla_nest_end(msg, nl_modes);
1010         return 0;
1011
1012 nla_put_failure:
1013         return -ENOBUFS;
1014 }
1015
1016 static int nl80211_put_iface_combinations(struct wiphy *wiphy,
1017                                           struct sk_buff *msg,
1018                                           bool large)
1019 {
1020         struct nlattr *nl_combis;
1021         int i, j;
1022
1023         nl_combis = nla_nest_start(msg,
1024                                 NL80211_ATTR_INTERFACE_COMBINATIONS);
1025         if (!nl_combis)
1026                 goto nla_put_failure;
1027
1028         for (i = 0; i < wiphy->n_iface_combinations; i++) {
1029                 const struct ieee80211_iface_combination *c;
1030                 struct nlattr *nl_combi, *nl_limits;
1031
1032                 c = &wiphy->iface_combinations[i];
1033
1034                 nl_combi = nla_nest_start(msg, i + 1);
1035                 if (!nl_combi)
1036                         goto nla_put_failure;
1037
1038                 nl_limits = nla_nest_start(msg, NL80211_IFACE_COMB_LIMITS);
1039                 if (!nl_limits)
1040                         goto nla_put_failure;
1041
1042                 for (j = 0; j < c->n_limits; j++) {
1043                         struct nlattr *nl_limit;
1044
1045                         nl_limit = nla_nest_start(msg, j + 1);
1046                         if (!nl_limit)
1047                                 goto nla_put_failure;
1048                         if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX,
1049                                         c->limits[j].max))
1050                                 goto nla_put_failure;
1051                         if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES,
1052                                                 c->limits[j].types))
1053                                 goto nla_put_failure;
1054                         nla_nest_end(msg, nl_limit);
1055                 }
1056
1057                 nla_nest_end(msg, nl_limits);
1058
1059                 if (c->beacon_int_infra_match &&
1060                     nla_put_flag(msg, NL80211_IFACE_COMB_STA_AP_BI_MATCH))
1061                         goto nla_put_failure;
1062                 if (nla_put_u32(msg, NL80211_IFACE_COMB_NUM_CHANNELS,
1063                                 c->num_different_channels) ||
1064                     nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM,
1065                                 c->max_interfaces))
1066                         goto nla_put_failure;
1067                 if (large &&
1068                     (nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS,
1069                                 c->radar_detect_widths) ||
1070                      nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_REGIONS,
1071                                 c->radar_detect_regions)))
1072                         goto nla_put_failure;
1073                 if (c->beacon_int_min_gcd &&
1074                     nla_put_u32(msg, NL80211_IFACE_COMB_BI_MIN_GCD,
1075                                 c->beacon_int_min_gcd))
1076                         goto nla_put_failure;
1077
1078                 nla_nest_end(msg, nl_combi);
1079         }
1080
1081         nla_nest_end(msg, nl_combis);
1082
1083         return 0;
1084 nla_put_failure:
1085         return -ENOBUFS;
1086 }
1087
1088 #ifdef CONFIG_PM
1089 static int nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device *rdev,
1090                                         struct sk_buff *msg)
1091 {
1092         const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan->tcp;
1093         struct nlattr *nl_tcp;
1094
1095         if (!tcp)
1096                 return 0;
1097
1098         nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
1099         if (!nl_tcp)
1100                 return -ENOBUFS;
1101
1102         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1103                         tcp->data_payload_max))
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 (tcp->seq && nla_put_flag(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ))
1111                 return -ENOBUFS;
1112
1113         if (tcp->tok && nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
1114                                 sizeof(*tcp->tok), tcp->tok))
1115                 return -ENOBUFS;
1116
1117         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
1118                         tcp->data_interval_max))
1119                 return -ENOBUFS;
1120
1121         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
1122                         tcp->wake_payload_max))
1123                 return -ENOBUFS;
1124
1125         nla_nest_end(msg, nl_tcp);
1126         return 0;
1127 }
1128
1129 static int nl80211_send_wowlan(struct sk_buff *msg,
1130                                struct cfg80211_registered_device *rdev,
1131                                bool large)
1132 {
1133         struct nlattr *nl_wowlan;
1134
1135         if (!rdev->wiphy.wowlan)
1136                 return 0;
1137
1138         nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED);
1139         if (!nl_wowlan)
1140                 return -ENOBUFS;
1141
1142         if (((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_ANY) &&
1143              nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
1144             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_DISCONNECT) &&
1145              nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
1146             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT) &&
1147              nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
1148             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) &&
1149              nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) ||
1150             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) &&
1151              nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
1152             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) &&
1153              nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
1154             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) &&
1155              nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
1156             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE) &&
1157              nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
1158                 return -ENOBUFS;
1159
1160         if (rdev->wiphy.wowlan->n_patterns) {
1161                 struct nl80211_pattern_support pat = {
1162                         .max_patterns = rdev->wiphy.wowlan->n_patterns,
1163                         .min_pattern_len = rdev->wiphy.wowlan->pattern_min_len,
1164                         .max_pattern_len = rdev->wiphy.wowlan->pattern_max_len,
1165                         .max_pkt_offset = rdev->wiphy.wowlan->max_pkt_offset,
1166                 };
1167
1168                 if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
1169                             sizeof(pat), &pat))
1170                         return -ENOBUFS;
1171         }
1172
1173         if ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_NET_DETECT) &&
1174             nla_put_u32(msg, NL80211_WOWLAN_TRIG_NET_DETECT,
1175                         rdev->wiphy.wowlan->max_nd_match_sets))
1176                 return -ENOBUFS;
1177
1178         if (large && nl80211_send_wowlan_tcp_caps(rdev, msg))
1179                 return -ENOBUFS;
1180
1181         nla_nest_end(msg, nl_wowlan);
1182
1183         return 0;
1184 }
1185 #endif
1186
1187 static int nl80211_send_coalesce(struct sk_buff *msg,
1188                                  struct cfg80211_registered_device *rdev)
1189 {
1190         struct nl80211_coalesce_rule_support rule;
1191
1192         if (!rdev->wiphy.coalesce)
1193                 return 0;
1194
1195         rule.max_rules = rdev->wiphy.coalesce->n_rules;
1196         rule.max_delay = rdev->wiphy.coalesce->max_delay;
1197         rule.pat.max_patterns = rdev->wiphy.coalesce->n_patterns;
1198         rule.pat.min_pattern_len = rdev->wiphy.coalesce->pattern_min_len;
1199         rule.pat.max_pattern_len = rdev->wiphy.coalesce->pattern_max_len;
1200         rule.pat.max_pkt_offset = rdev->wiphy.coalesce->max_pkt_offset;
1201
1202         if (nla_put(msg, NL80211_ATTR_COALESCE_RULE, sizeof(rule), &rule))
1203                 return -ENOBUFS;
1204
1205         return 0;
1206 }
1207
1208 static int nl80211_send_band_rateinfo(struct sk_buff *msg,
1209                                       struct ieee80211_supported_band *sband)
1210 {
1211         struct nlattr *nl_rates, *nl_rate;
1212         struct ieee80211_rate *rate;
1213         int i;
1214
1215         /* add HT info */
1216         if (sband->ht_cap.ht_supported &&
1217             (nla_put(msg, NL80211_BAND_ATTR_HT_MCS_SET,
1218                      sizeof(sband->ht_cap.mcs),
1219                      &sband->ht_cap.mcs) ||
1220              nla_put_u16(msg, NL80211_BAND_ATTR_HT_CAPA,
1221                          sband->ht_cap.cap) ||
1222              nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
1223                         sband->ht_cap.ampdu_factor) ||
1224              nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
1225                         sband->ht_cap.ampdu_density)))
1226                 return -ENOBUFS;
1227
1228         /* add VHT info */
1229         if (sband->vht_cap.vht_supported &&
1230             (nla_put(msg, NL80211_BAND_ATTR_VHT_MCS_SET,
1231                      sizeof(sband->vht_cap.vht_mcs),
1232                      &sband->vht_cap.vht_mcs) ||
1233              nla_put_u32(msg, NL80211_BAND_ATTR_VHT_CAPA,
1234                          sband->vht_cap.cap)))
1235                 return -ENOBUFS;
1236
1237         /* add bitrates */
1238         nl_rates = nla_nest_start(msg, NL80211_BAND_ATTR_RATES);
1239         if (!nl_rates)
1240                 return -ENOBUFS;
1241
1242         for (i = 0; i < sband->n_bitrates; i++) {
1243                 nl_rate = nla_nest_start(msg, i);
1244                 if (!nl_rate)
1245                         return -ENOBUFS;
1246
1247                 rate = &sband->bitrates[i];
1248                 if (nla_put_u32(msg, NL80211_BITRATE_ATTR_RATE,
1249                                 rate->bitrate))
1250                         return -ENOBUFS;
1251                 if ((rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) &&
1252                     nla_put_flag(msg,
1253                                  NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE))
1254                         return -ENOBUFS;
1255
1256                 nla_nest_end(msg, nl_rate);
1257         }
1258
1259         nla_nest_end(msg, nl_rates);
1260
1261         return 0;
1262 }
1263
1264 static int
1265 nl80211_send_mgmt_stypes(struct sk_buff *msg,
1266                          const struct ieee80211_txrx_stypes *mgmt_stypes)
1267 {
1268         u16 stypes;
1269         struct nlattr *nl_ftypes, *nl_ifs;
1270         enum nl80211_iftype ift;
1271         int i;
1272
1273         if (!mgmt_stypes)
1274                 return 0;
1275
1276         nl_ifs = nla_nest_start(msg, NL80211_ATTR_TX_FRAME_TYPES);
1277         if (!nl_ifs)
1278                 return -ENOBUFS;
1279
1280         for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1281                 nl_ftypes = nla_nest_start(msg, ift);
1282                 if (!nl_ftypes)
1283                         return -ENOBUFS;
1284                 i = 0;
1285                 stypes = mgmt_stypes[ift].tx;
1286                 while (stypes) {
1287                         if ((stypes & 1) &&
1288                             nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1289                                         (i << 4) | IEEE80211_FTYPE_MGMT))
1290                                 return -ENOBUFS;
1291                         stypes >>= 1;
1292                         i++;
1293                 }
1294                 nla_nest_end(msg, nl_ftypes);
1295         }
1296
1297         nla_nest_end(msg, nl_ifs);
1298
1299         nl_ifs = nla_nest_start(msg, NL80211_ATTR_RX_FRAME_TYPES);
1300         if (!nl_ifs)
1301                 return -ENOBUFS;
1302
1303         for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1304                 nl_ftypes = nla_nest_start(msg, ift);
1305                 if (!nl_ftypes)
1306                         return -ENOBUFS;
1307                 i = 0;
1308                 stypes = mgmt_stypes[ift].rx;
1309                 while (stypes) {
1310                         if ((stypes & 1) &&
1311                             nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1312                                         (i << 4) | IEEE80211_FTYPE_MGMT))
1313                                 return -ENOBUFS;
1314                         stypes >>= 1;
1315                         i++;
1316                 }
1317                 nla_nest_end(msg, nl_ftypes);
1318         }
1319         nla_nest_end(msg, nl_ifs);
1320
1321         return 0;
1322 }
1323
1324 #define CMD(op, n)                                                      \
1325          do {                                                           \
1326                 if (rdev->ops->op) {                                    \
1327                         i++;                                            \
1328                         if (nla_put_u32(msg, i, NL80211_CMD_ ## n))     \
1329                                 goto nla_put_failure;                   \
1330                 }                                                       \
1331         } while (0)
1332
1333 static int nl80211_add_commands_unsplit(struct cfg80211_registered_device *rdev,
1334                                         struct sk_buff *msg)
1335 {
1336         int i = 0;
1337
1338         /*
1339          * do *NOT* add anything into this function, new things need to be
1340          * advertised only to new versions of userspace that can deal with
1341          * the split (and they can't possibly care about new features...
1342          */
1343         CMD(add_virtual_intf, NEW_INTERFACE);
1344         CMD(change_virtual_intf, SET_INTERFACE);
1345         CMD(add_key, NEW_KEY);
1346         CMD(start_ap, START_AP);
1347         CMD(add_station, NEW_STATION);
1348         CMD(add_mpath, NEW_MPATH);
1349         CMD(update_mesh_config, SET_MESH_CONFIG);
1350         CMD(change_bss, SET_BSS);
1351         CMD(auth, AUTHENTICATE);
1352         CMD(assoc, ASSOCIATE);
1353         CMD(deauth, DEAUTHENTICATE);
1354         CMD(disassoc, DISASSOCIATE);
1355         CMD(join_ibss, JOIN_IBSS);
1356         CMD(join_mesh, JOIN_MESH);
1357         CMD(set_pmksa, SET_PMKSA);
1358         CMD(del_pmksa, DEL_PMKSA);
1359         CMD(flush_pmksa, FLUSH_PMKSA);
1360         if (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)
1361                 CMD(remain_on_channel, REMAIN_ON_CHANNEL);
1362         CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
1363         CMD(mgmt_tx, FRAME);
1364         CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL);
1365         if (rdev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
1366                 i++;
1367                 if (nla_put_u32(msg, i, NL80211_CMD_SET_WIPHY_NETNS))
1368                         goto nla_put_failure;
1369         }
1370         if (rdev->ops->set_monitor_channel || rdev->ops->start_ap ||
1371             rdev->ops->join_mesh) {
1372                 i++;
1373                 if (nla_put_u32(msg, i, NL80211_CMD_SET_CHANNEL))
1374                         goto nla_put_failure;
1375         }
1376         CMD(set_wds_peer, SET_WDS_PEER);
1377         if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) {
1378                 CMD(tdls_mgmt, TDLS_MGMT);
1379                 CMD(tdls_oper, TDLS_OPER);
1380         }
1381         if (rdev->wiphy.max_sched_scan_reqs)
1382                 CMD(sched_scan_start, START_SCHED_SCAN);
1383         CMD(probe_client, PROBE_CLIENT);
1384         CMD(set_noack_map, SET_NOACK_MAP);
1385         if (rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) {
1386                 i++;
1387                 if (nla_put_u32(msg, i, NL80211_CMD_REGISTER_BEACONS))
1388                         goto nla_put_failure;
1389         }
1390         CMD(start_p2p_device, START_P2P_DEVICE);
1391         CMD(set_mcast_rate, SET_MCAST_RATE);
1392 #ifdef CONFIG_NL80211_TESTMODE
1393         CMD(testmode_cmd, TESTMODE);
1394 #endif
1395
1396         if (rdev->ops->connect || rdev->ops->auth) {
1397                 i++;
1398                 if (nla_put_u32(msg, i, NL80211_CMD_CONNECT))
1399                         goto nla_put_failure;
1400         }
1401
1402         if (rdev->ops->disconnect || rdev->ops->deauth) {
1403                 i++;
1404                 if (nla_put_u32(msg, i, NL80211_CMD_DISCONNECT))
1405                         goto nla_put_failure;
1406         }
1407
1408         return i;
1409  nla_put_failure:
1410         return -ENOBUFS;
1411 }
1412
1413 struct nl80211_dump_wiphy_state {
1414         s64 filter_wiphy;
1415         long start;
1416         long split_start, band_start, chan_start, capa_start;
1417         bool split;
1418 };
1419
1420 static int nl80211_send_wiphy(struct cfg80211_registered_device *rdev,
1421                               enum nl80211_commands cmd,
1422                               struct sk_buff *msg, u32 portid, u32 seq,
1423                               int flags, struct nl80211_dump_wiphy_state *state)
1424 {
1425         void *hdr;
1426         struct nlattr *nl_bands, *nl_band;
1427         struct nlattr *nl_freqs, *nl_freq;
1428         struct nlattr *nl_cmds;
1429         enum nl80211_band band;
1430         struct ieee80211_channel *chan;
1431         int i;
1432         const struct ieee80211_txrx_stypes *mgmt_stypes =
1433                                 rdev->wiphy.mgmt_stypes;
1434         u32 features;
1435
1436         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
1437         if (!hdr)
1438                 return -ENOBUFS;
1439
1440         if (WARN_ON(!state))
1441                 return -EINVAL;
1442
1443         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
1444             nla_put_string(msg, NL80211_ATTR_WIPHY_NAME,
1445                            wiphy_name(&rdev->wiphy)) ||
1446             nla_put_u32(msg, NL80211_ATTR_GENERATION,
1447                         cfg80211_rdev_list_generation))
1448                 goto nla_put_failure;
1449
1450         if (cmd != NL80211_CMD_NEW_WIPHY)
1451                 goto finish;
1452
1453         switch (state->split_start) {
1454         case 0:
1455                 if (nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
1456                                rdev->wiphy.retry_short) ||
1457                     nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
1458                                rdev->wiphy.retry_long) ||
1459                     nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
1460                                 rdev->wiphy.frag_threshold) ||
1461                     nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
1462                                 rdev->wiphy.rts_threshold) ||
1463                     nla_put_u8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
1464                                rdev->wiphy.coverage_class) ||
1465                     nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
1466                                rdev->wiphy.max_scan_ssids) ||
1467                     nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS,
1468                                rdev->wiphy.max_sched_scan_ssids) ||
1469                     nla_put_u16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
1470                                 rdev->wiphy.max_scan_ie_len) ||
1471                     nla_put_u16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN,
1472                                 rdev->wiphy.max_sched_scan_ie_len) ||
1473                     nla_put_u8(msg, NL80211_ATTR_MAX_MATCH_SETS,
1474                                rdev->wiphy.max_match_sets) ||
1475                     nla_put_u32(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_PLANS,
1476                                 rdev->wiphy.max_sched_scan_plans) ||
1477                     nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_INTERVAL,
1478                                 rdev->wiphy.max_sched_scan_plan_interval) ||
1479                     nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_ITERATIONS,
1480                                 rdev->wiphy.max_sched_scan_plan_iterations))
1481                         goto nla_put_failure;
1482
1483                 if ((rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) &&
1484                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_IBSS_RSN))
1485                         goto nla_put_failure;
1486                 if ((rdev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) &&
1487                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_MESH_AUTH))
1488                         goto nla_put_failure;
1489                 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
1490                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_AP_UAPSD))
1491                         goto nla_put_failure;
1492                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) &&
1493                     nla_put_flag(msg, NL80211_ATTR_ROAM_SUPPORT))
1494                         goto nla_put_failure;
1495                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) &&
1496                     nla_put_flag(msg, NL80211_ATTR_TDLS_SUPPORT))
1497                         goto nla_put_failure;
1498                 if ((rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) &&
1499                     nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP))
1500                         goto nla_put_failure;
1501                 state->split_start++;
1502                 if (state->split)
1503                         break;
1504         case 1:
1505                 if (nla_put(msg, NL80211_ATTR_CIPHER_SUITES,
1506                             sizeof(u32) * rdev->wiphy.n_cipher_suites,
1507                             rdev->wiphy.cipher_suites))
1508                         goto nla_put_failure;
1509
1510                 if (nla_put_u8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
1511                                rdev->wiphy.max_num_pmkids))
1512                         goto nla_put_failure;
1513
1514                 if ((rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
1515                     nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE))
1516                         goto nla_put_failure;
1517
1518                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX,
1519                                 rdev->wiphy.available_antennas_tx) ||
1520                     nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX,
1521                                 rdev->wiphy.available_antennas_rx))
1522                         goto nla_put_failure;
1523
1524                 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) &&
1525                     nla_put_u32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD,
1526                                 rdev->wiphy.probe_resp_offload))
1527                         goto nla_put_failure;
1528
1529                 if ((rdev->wiphy.available_antennas_tx ||
1530                      rdev->wiphy.available_antennas_rx) &&
1531                     rdev->ops->get_antenna) {
1532                         u32 tx_ant = 0, rx_ant = 0;
1533                         int res;
1534
1535                         res = rdev_get_antenna(rdev, &tx_ant, &rx_ant);
1536                         if (!res) {
1537                                 if (nla_put_u32(msg,
1538                                                 NL80211_ATTR_WIPHY_ANTENNA_TX,
1539                                                 tx_ant) ||
1540                                     nla_put_u32(msg,
1541                                                 NL80211_ATTR_WIPHY_ANTENNA_RX,
1542                                                 rx_ant))
1543                                         goto nla_put_failure;
1544                         }
1545                 }
1546
1547                 state->split_start++;
1548                 if (state->split)
1549                         break;
1550         case 2:
1551                 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES,
1552                                         rdev->wiphy.interface_modes))
1553                                 goto nla_put_failure;
1554                 state->split_start++;
1555                 if (state->split)
1556                         break;
1557         case 3:
1558                 nl_bands = nla_nest_start(msg, NL80211_ATTR_WIPHY_BANDS);
1559                 if (!nl_bands)
1560                         goto nla_put_failure;
1561
1562                 for (band = state->band_start;
1563                      band < NUM_NL80211_BANDS; band++) {
1564                         struct ieee80211_supported_band *sband;
1565
1566                         sband = rdev->wiphy.bands[band];
1567
1568                         if (!sband)
1569                                 continue;
1570
1571                         nl_band = nla_nest_start(msg, band);
1572                         if (!nl_band)
1573                                 goto nla_put_failure;
1574
1575                         switch (state->chan_start) {
1576                         case 0:
1577                                 if (nl80211_send_band_rateinfo(msg, sband))
1578                                         goto nla_put_failure;
1579                                 state->chan_start++;
1580                                 if (state->split)
1581                                         break;
1582                         default:
1583                                 /* add frequencies */
1584                                 nl_freqs = nla_nest_start(
1585                                         msg, NL80211_BAND_ATTR_FREQS);
1586                                 if (!nl_freqs)
1587                                         goto nla_put_failure;
1588
1589                                 for (i = state->chan_start - 1;
1590                                      i < sband->n_channels;
1591                                      i++) {
1592                                         nl_freq = nla_nest_start(msg, i);
1593                                         if (!nl_freq)
1594                                                 goto nla_put_failure;
1595
1596                                         chan = &sband->channels[i];
1597
1598                                         if (nl80211_msg_put_channel(
1599                                                         msg, chan,
1600                                                         state->split))
1601                                                 goto nla_put_failure;
1602
1603                                         nla_nest_end(msg, nl_freq);
1604                                         if (state->split)
1605                                                 break;
1606                                 }
1607                                 if (i < sband->n_channels)
1608                                         state->chan_start = i + 2;
1609                                 else
1610                                         state->chan_start = 0;
1611                                 nla_nest_end(msg, nl_freqs);
1612                         }
1613
1614                         nla_nest_end(msg, nl_band);
1615
1616                         if (state->split) {
1617                                 /* start again here */
1618                                 if (state->chan_start)
1619                                         band--;
1620                                 break;
1621                         }
1622                 }
1623                 nla_nest_end(msg, nl_bands);
1624
1625                 if (band < NUM_NL80211_BANDS)
1626                         state->band_start = band + 1;
1627                 else
1628                         state->band_start = 0;
1629
1630                 /* if bands & channels are done, continue outside */
1631                 if (state->band_start == 0 && state->chan_start == 0)
1632                         state->split_start++;
1633                 if (state->split)
1634                         break;
1635         case 4:
1636                 nl_cmds = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_COMMANDS);
1637                 if (!nl_cmds)
1638                         goto nla_put_failure;
1639
1640                 i = nl80211_add_commands_unsplit(rdev, msg);
1641                 if (i < 0)
1642                         goto nla_put_failure;
1643                 if (state->split) {
1644                         CMD(crit_proto_start, CRIT_PROTOCOL_START);
1645                         CMD(crit_proto_stop, CRIT_PROTOCOL_STOP);
1646                         if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH)
1647                                 CMD(channel_switch, CHANNEL_SWITCH);
1648                         CMD(set_qos_map, SET_QOS_MAP);
1649                         if (rdev->wiphy.features &
1650                                         NL80211_FEATURE_SUPPORTS_WMM_ADMISSION)
1651                                 CMD(add_tx_ts, ADD_TX_TS);
1652                         CMD(set_multicast_to_unicast, SET_MULTICAST_TO_UNICAST);
1653                         CMD(update_connect_params, UPDATE_CONNECT_PARAMS);
1654                 }
1655 #undef CMD
1656
1657                 nla_nest_end(msg, nl_cmds);
1658                 state->split_start++;
1659                 if (state->split)
1660                         break;
1661         case 5:
1662                 if (rdev->ops->remain_on_channel &&
1663                     (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) &&
1664                     nla_put_u32(msg,
1665                                 NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
1666                                 rdev->wiphy.max_remain_on_channel_duration))
1667                         goto nla_put_failure;
1668
1669                 if ((rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) &&
1670                     nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK))
1671                         goto nla_put_failure;
1672
1673                 if (nl80211_send_mgmt_stypes(msg, mgmt_stypes))
1674                         goto nla_put_failure;
1675                 state->split_start++;
1676                 if (state->split)
1677                         break;
1678         case 6:
1679 #ifdef CONFIG_PM
1680                 if (nl80211_send_wowlan(msg, rdev, state->split))
1681                         goto nla_put_failure;
1682                 state->split_start++;
1683                 if (state->split)
1684                         break;
1685 #else
1686                 state->split_start++;
1687 #endif
1688         case 7:
1689                 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES,
1690                                         rdev->wiphy.software_iftypes))
1691                         goto nla_put_failure;
1692
1693                 if (nl80211_put_iface_combinations(&rdev->wiphy, msg,
1694                                                    state->split))
1695                         goto nla_put_failure;
1696
1697                 state->split_start++;
1698                 if (state->split)
1699                         break;
1700         case 8:
1701                 if ((rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) &&
1702                     nla_put_u32(msg, NL80211_ATTR_DEVICE_AP_SME,
1703                                 rdev->wiphy.ap_sme_capa))
1704                         goto nla_put_failure;
1705
1706                 features = rdev->wiphy.features;
1707                 /*
1708                  * We can only add the per-channel limit information if the
1709                  * dump is split, otherwise it makes it too big. Therefore
1710                  * only advertise it in that case.
1711                  */
1712                 if (state->split)
1713                         features |= NL80211_FEATURE_ADVERTISE_CHAN_LIMITS;
1714                 if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS, features))
1715                         goto nla_put_failure;
1716
1717                 if (rdev->wiphy.ht_capa_mod_mask &&
1718                     nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK,
1719                             sizeof(*rdev->wiphy.ht_capa_mod_mask),
1720                             rdev->wiphy.ht_capa_mod_mask))
1721                         goto nla_put_failure;
1722
1723                 if (rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME &&
1724                     rdev->wiphy.max_acl_mac_addrs &&
1725                     nla_put_u32(msg, NL80211_ATTR_MAC_ACL_MAX,
1726                                 rdev->wiphy.max_acl_mac_addrs))
1727                         goto nla_put_failure;
1728
1729                 /*
1730                  * Any information below this point is only available to
1731                  * applications that can deal with it being split. This
1732                  * helps ensure that newly added capabilities don't break
1733                  * older tools by overrunning their buffers.
1734                  *
1735                  * We still increment split_start so that in the split
1736                  * case we'll continue with more data in the next round,
1737                  * but break unconditionally so unsplit data stops here.
1738                  */
1739                 state->split_start++;
1740                 break;
1741         case 9:
1742                 if (rdev->wiphy.extended_capabilities &&
1743                     (nla_put(msg, NL80211_ATTR_EXT_CAPA,
1744                              rdev->wiphy.extended_capabilities_len,
1745                              rdev->wiphy.extended_capabilities) ||
1746                      nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
1747                              rdev->wiphy.extended_capabilities_len,
1748                              rdev->wiphy.extended_capabilities_mask)))
1749                         goto nla_put_failure;
1750
1751                 if (rdev->wiphy.vht_capa_mod_mask &&
1752                     nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK,
1753                             sizeof(*rdev->wiphy.vht_capa_mod_mask),
1754                             rdev->wiphy.vht_capa_mod_mask))
1755                         goto nla_put_failure;
1756
1757                 state->split_start++;
1758                 break;
1759         case 10:
1760                 if (nl80211_send_coalesce(msg, rdev))
1761                         goto nla_put_failure;
1762
1763                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ) &&
1764                     (nla_put_flag(msg, NL80211_ATTR_SUPPORT_5_MHZ) ||
1765                      nla_put_flag(msg, NL80211_ATTR_SUPPORT_10_MHZ)))
1766                         goto nla_put_failure;
1767
1768                 if (rdev->wiphy.max_ap_assoc_sta &&
1769                     nla_put_u32(msg, NL80211_ATTR_MAX_AP_ASSOC_STA,
1770                                 rdev->wiphy.max_ap_assoc_sta))
1771                         goto nla_put_failure;
1772
1773                 state->split_start++;
1774                 break;
1775         case 11:
1776                 if (rdev->wiphy.n_vendor_commands) {
1777                         const struct nl80211_vendor_cmd_info *info;
1778                         struct nlattr *nested;
1779
1780                         nested = nla_nest_start(msg, NL80211_ATTR_VENDOR_DATA);
1781                         if (!nested)
1782                                 goto nla_put_failure;
1783
1784                         for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
1785                                 info = &rdev->wiphy.vendor_commands[i].info;
1786                                 if (nla_put(msg, i + 1, sizeof(*info), info))
1787                                         goto nla_put_failure;
1788                         }
1789                         nla_nest_end(msg, nested);
1790                 }
1791
1792                 if (rdev->wiphy.n_vendor_events) {
1793                         const struct nl80211_vendor_cmd_info *info;
1794                         struct nlattr *nested;
1795
1796                         nested = nla_nest_start(msg,
1797                                                 NL80211_ATTR_VENDOR_EVENTS);
1798                         if (!nested)
1799                                 goto nla_put_failure;
1800
1801                         for (i = 0; i < rdev->wiphy.n_vendor_events; i++) {
1802                                 info = &rdev->wiphy.vendor_events[i];
1803                                 if (nla_put(msg, i + 1, sizeof(*info), info))
1804                                         goto nla_put_failure;
1805                         }
1806                         nla_nest_end(msg, nested);
1807                 }
1808                 state->split_start++;
1809                 break;
1810         case 12:
1811                 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH &&
1812                     nla_put_u8(msg, NL80211_ATTR_MAX_CSA_COUNTERS,
1813                                rdev->wiphy.max_num_csa_counters))
1814                         goto nla_put_failure;
1815
1816                 if (rdev->wiphy.regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
1817                     nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
1818                         goto nla_put_failure;
1819
1820                 if (rdev->wiphy.max_sched_scan_reqs &&
1821                     nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_MAX_REQS,
1822                                 rdev->wiphy.max_sched_scan_reqs))
1823                         goto nla_put_failure;
1824
1825                 if (nla_put(msg, NL80211_ATTR_EXT_FEATURES,
1826                             sizeof(rdev->wiphy.ext_features),
1827                             rdev->wiphy.ext_features))
1828                         goto nla_put_failure;
1829
1830                 if (rdev->wiphy.bss_select_support) {
1831                         struct nlattr *nested;
1832                         u32 bss_select_support = rdev->wiphy.bss_select_support;
1833
1834                         nested = nla_nest_start(msg, NL80211_ATTR_BSS_SELECT);
1835                         if (!nested)
1836                                 goto nla_put_failure;
1837
1838                         i = 0;
1839                         while (bss_select_support) {
1840                                 if ((bss_select_support & 1) &&
1841                                     nla_put_flag(msg, i))
1842                                         goto nla_put_failure;
1843                                 i++;
1844                                 bss_select_support >>= 1;
1845                         }
1846                         nla_nest_end(msg, nested);
1847                 }
1848
1849                 state->split_start++;
1850                 break;
1851         case 13:
1852                 if (rdev->wiphy.num_iftype_ext_capab &&
1853                     rdev->wiphy.iftype_ext_capab) {
1854                         struct nlattr *nested_ext_capab, *nested;
1855
1856                         nested = nla_nest_start(msg,
1857                                                 NL80211_ATTR_IFTYPE_EXT_CAPA);
1858                         if (!nested)
1859                                 goto nla_put_failure;
1860
1861                         for (i = state->capa_start;
1862                              i < rdev->wiphy.num_iftype_ext_capab; i++) {
1863                                 const struct wiphy_iftype_ext_capab *capab;
1864
1865                                 capab = &rdev->wiphy.iftype_ext_capab[i];
1866
1867                                 nested_ext_capab = nla_nest_start(msg, i);
1868                                 if (!nested_ext_capab ||
1869                                     nla_put_u32(msg, NL80211_ATTR_IFTYPE,
1870                                                 capab->iftype) ||
1871                                     nla_put(msg, NL80211_ATTR_EXT_CAPA,
1872                                             capab->extended_capabilities_len,
1873                                             capab->extended_capabilities) ||
1874                                     nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
1875                                             capab->extended_capabilities_len,
1876                                             capab->extended_capabilities_mask))
1877                                         goto nla_put_failure;
1878
1879                                 nla_nest_end(msg, nested_ext_capab);
1880                                 if (state->split)
1881                                         break;
1882                         }
1883                         nla_nest_end(msg, nested);
1884                         if (i < rdev->wiphy.num_iftype_ext_capab) {
1885                                 state->capa_start = i + 1;
1886                                 break;
1887                         }
1888                 }
1889
1890                 if (nla_put_u32(msg, NL80211_ATTR_BANDS,
1891                                 rdev->wiphy.nan_supported_bands))
1892                         goto nla_put_failure;
1893
1894                 /* done */
1895                 state->split_start = 0;
1896                 break;
1897         }
1898  finish:
1899         genlmsg_end(msg, hdr);
1900         return 0;
1901
1902  nla_put_failure:
1903         genlmsg_cancel(msg, hdr);
1904         return -EMSGSIZE;
1905 }
1906
1907 static int nl80211_dump_wiphy_parse(struct sk_buff *skb,
1908                                     struct netlink_callback *cb,
1909                                     struct nl80211_dump_wiphy_state *state)
1910 {
1911         struct nlattr **tb = genl_family_attrbuf(&nl80211_fam);
1912         int ret = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize, tb,
1913                               nl80211_fam.maxattr, nl80211_policy, NULL);
1914         /* ignore parse errors for backward compatibility */
1915         if (ret)
1916                 return 0;
1917
1918         state->split = tb[NL80211_ATTR_SPLIT_WIPHY_DUMP];
1919         if (tb[NL80211_ATTR_WIPHY])
1920                 state->filter_wiphy = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
1921         if (tb[NL80211_ATTR_WDEV])
1922                 state->filter_wiphy = nla_get_u64(tb[NL80211_ATTR_WDEV]) >> 32;
1923         if (tb[NL80211_ATTR_IFINDEX]) {
1924                 struct net_device *netdev;
1925                 struct cfg80211_registered_device *rdev;
1926                 int ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
1927
1928                 netdev = __dev_get_by_index(sock_net(skb->sk), ifidx);
1929                 if (!netdev)
1930                         return -ENODEV;
1931                 if (netdev->ieee80211_ptr) {
1932                         rdev = wiphy_to_rdev(
1933                                 netdev->ieee80211_ptr->wiphy);
1934                         state->filter_wiphy = rdev->wiphy_idx;
1935                 }
1936         }
1937
1938         return 0;
1939 }
1940
1941 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
1942 {
1943         int idx = 0, ret;
1944         struct nl80211_dump_wiphy_state *state = (void *)cb->args[0];
1945         struct cfg80211_registered_device *rdev;
1946
1947         rtnl_lock();
1948         if (!state) {
1949                 state = kzalloc(sizeof(*state), GFP_KERNEL);
1950                 if (!state) {
1951                         rtnl_unlock();
1952                         return -ENOMEM;
1953                 }
1954                 state->filter_wiphy = -1;
1955                 ret = nl80211_dump_wiphy_parse(skb, cb, state);
1956                 if (ret) {
1957                         kfree(state);
1958                         rtnl_unlock();
1959                         return ret;
1960                 }
1961                 cb->args[0] = (long)state;
1962         }
1963
1964         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
1965                 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
1966                         continue;
1967                 if (++idx <= state->start)
1968                         continue;
1969                 if (state->filter_wiphy != -1 &&
1970                     state->filter_wiphy != rdev->wiphy_idx)
1971                         continue;
1972                 /* attempt to fit multiple wiphy data chunks into the skb */
1973                 do {
1974                         ret = nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY,
1975                                                  skb,
1976                                                  NETLINK_CB(cb->skb).portid,
1977                                                  cb->nlh->nlmsg_seq,
1978                                                  NLM_F_MULTI, state);
1979                         if (ret < 0) {
1980                                 /*
1981                                  * If sending the wiphy data didn't fit (ENOBUFS
1982                                  * or EMSGSIZE returned), this SKB is still
1983                                  * empty (so it's not too big because another
1984                                  * wiphy dataset is already in the skb) and
1985                                  * we've not tried to adjust the dump allocation
1986                                  * yet ... then adjust the alloc size to be
1987                                  * bigger, and return 1 but with the empty skb.
1988                                  * This results in an empty message being RX'ed
1989                                  * in userspace, but that is ignored.
1990                                  *
1991                                  * We can then retry with the larger buffer.
1992                                  */
1993                                 if ((ret == -ENOBUFS || ret == -EMSGSIZE) &&
1994                                     !skb->len && !state->split &&
1995                                     cb->min_dump_alloc < 4096) {
1996                                         cb->min_dump_alloc = 4096;
1997                                         state->split_start = 0;
1998                                         rtnl_unlock();
1999                                         return 1;
2000                                 }
2001                                 idx--;
2002                                 break;
2003                         }
2004                 } while (state->split_start > 0);
2005                 break;
2006         }
2007         rtnl_unlock();
2008
2009         state->start = idx;
2010
2011         return skb->len;
2012 }
2013
2014 static int nl80211_dump_wiphy_done(struct netlink_callback *cb)
2015 {
2016         kfree((void *)cb->args[0]);
2017         return 0;
2018 }
2019
2020 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
2021 {
2022         struct sk_buff *msg;
2023         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2024         struct nl80211_dump_wiphy_state state = {};
2025
2026         msg = nlmsg_new(4096, GFP_KERNEL);
2027         if (!msg)
2028                 return -ENOMEM;
2029
2030         if (nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY, msg,
2031                                info->snd_portid, info->snd_seq, 0,
2032                                &state) < 0) {
2033                 nlmsg_free(msg);
2034                 return -ENOBUFS;
2035         }
2036
2037         return genlmsg_reply(msg, info);
2038 }
2039
2040 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
2041         [NL80211_TXQ_ATTR_QUEUE]                = { .type = NLA_U8 },
2042         [NL80211_TXQ_ATTR_TXOP]                 = { .type = NLA_U16 },
2043         [NL80211_TXQ_ATTR_CWMIN]                = { .type = NLA_U16 },
2044         [NL80211_TXQ_ATTR_CWMAX]                = { .type = NLA_U16 },
2045         [NL80211_TXQ_ATTR_AIFS]                 = { .type = NLA_U8 },
2046 };
2047
2048 static int parse_txq_params(struct nlattr *tb[],
2049                             struct ieee80211_txq_params *txq_params)
2050 {
2051         if (!tb[NL80211_TXQ_ATTR_AC] || !tb[NL80211_TXQ_ATTR_TXOP] ||
2052             !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
2053             !tb[NL80211_TXQ_ATTR_AIFS])
2054                 return -EINVAL;
2055
2056         txq_params->ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]);
2057         txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
2058         txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
2059         txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
2060         txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
2061
2062         if (txq_params->ac >= NL80211_NUM_ACS)
2063                 return -EINVAL;
2064
2065         return 0;
2066 }
2067
2068 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
2069 {
2070         /*
2071          * You can only set the channel explicitly for WDS interfaces,
2072          * all others have their channel managed via their respective
2073          * "establish a connection" command (connect, join, ...)
2074          *
2075          * For AP/GO and mesh mode, the channel can be set with the
2076          * channel userspace API, but is only stored and passed to the
2077          * low-level driver when the AP starts or the mesh is joined.
2078          * This is for backward compatibility, userspace can also give
2079          * the channel in the start-ap or join-mesh commands instead.
2080          *
2081          * Monitors are special as they are normally slaved to
2082          * whatever else is going on, so they have their own special
2083          * operation to set the monitor channel if possible.
2084          */
2085         return !wdev ||
2086                 wdev->iftype == NL80211_IFTYPE_AP ||
2087                 wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
2088                 wdev->iftype == NL80211_IFTYPE_MONITOR ||
2089                 wdev->iftype == NL80211_IFTYPE_P2P_GO;
2090 }
2091
2092 static int nl80211_parse_chandef(struct cfg80211_registered_device *rdev,
2093                                  struct genl_info *info,
2094                                  struct cfg80211_chan_def *chandef)
2095 {
2096         u32 control_freq;
2097
2098         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
2099                 return -EINVAL;
2100
2101         control_freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
2102
2103         chandef->chan = ieee80211_get_channel(&rdev->wiphy, control_freq);
2104         chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
2105         chandef->center_freq1 = control_freq;
2106         chandef->center_freq2 = 0;
2107
2108         /* Primary channel not allowed */
2109         if (!chandef->chan || chandef->chan->flags & IEEE80211_CHAN_DISABLED)
2110                 return -EINVAL;
2111
2112         if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
2113                 enum nl80211_channel_type chantype;
2114
2115                 chantype = nla_get_u32(
2116                                 info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
2117
2118                 switch (chantype) {
2119                 case NL80211_CHAN_NO_HT:
2120                 case NL80211_CHAN_HT20:
2121                 case NL80211_CHAN_HT40PLUS:
2122                 case NL80211_CHAN_HT40MINUS:
2123                         cfg80211_chandef_create(chandef, chandef->chan,
2124                                                 chantype);
2125                         /* user input for center_freq is incorrect */
2126                         if (info->attrs[NL80211_ATTR_CENTER_FREQ1] &&
2127                             chandef->center_freq1 != nla_get_u32(
2128                                         info->attrs[NL80211_ATTR_CENTER_FREQ1]))
2129                                 return -EINVAL;
2130                         /* center_freq2 must be zero */
2131                         if (info->attrs[NL80211_ATTR_CENTER_FREQ2] &&
2132                             nla_get_u32(info->attrs[NL80211_ATTR_CENTER_FREQ2]))
2133                                 return -EINVAL;
2134                         break;
2135                 default:
2136                         return -EINVAL;
2137                 }
2138         } else if (info->attrs[NL80211_ATTR_CHANNEL_WIDTH]) {
2139                 chandef->width =
2140                         nla_get_u32(info->attrs[NL80211_ATTR_CHANNEL_WIDTH]);
2141                 if (info->attrs[NL80211_ATTR_CENTER_FREQ1])
2142                         chandef->center_freq1 =
2143                                 nla_get_u32(
2144                                         info->attrs[NL80211_ATTR_CENTER_FREQ1]);
2145                 if (info->attrs[NL80211_ATTR_CENTER_FREQ2])
2146                         chandef->center_freq2 =
2147                                 nla_get_u32(
2148                                         info->attrs[NL80211_ATTR_CENTER_FREQ2]);
2149         }
2150
2151         if (!cfg80211_chandef_valid(chandef))
2152                 return -EINVAL;
2153
2154         if (!cfg80211_chandef_usable(&rdev->wiphy, chandef,
2155                                      IEEE80211_CHAN_DISABLED))
2156                 return -EINVAL;
2157
2158         if ((chandef->width == NL80211_CHAN_WIDTH_5 ||
2159              chandef->width == NL80211_CHAN_WIDTH_10) &&
2160             !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ))
2161                 return -EINVAL;
2162
2163         return 0;
2164 }
2165
2166 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
2167                                  struct net_device *dev,
2168                                  struct genl_info *info)
2169 {
2170         struct cfg80211_chan_def chandef;
2171         int result;
2172         enum nl80211_iftype iftype = NL80211_IFTYPE_MONITOR;
2173         struct wireless_dev *wdev = NULL;
2174
2175         if (dev)
2176                 wdev = dev->ieee80211_ptr;
2177         if (!nl80211_can_set_dev_channel(wdev))
2178                 return -EOPNOTSUPP;
2179         if (wdev)
2180                 iftype = wdev->iftype;
2181
2182         result = nl80211_parse_chandef(rdev, info, &chandef);
2183         if (result)
2184                 return result;
2185
2186         switch (iftype) {
2187         case NL80211_IFTYPE_AP:
2188         case NL80211_IFTYPE_P2P_GO:
2189                 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
2190                                                    iftype)) {
2191                         result = -EINVAL;
2192                         break;
2193                 }
2194                 if (wdev->beacon_interval) {
2195                         if (!dev || !rdev->ops->set_ap_chanwidth ||
2196                             !(rdev->wiphy.features &
2197                               NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE)) {
2198                                 result = -EBUSY;
2199                                 break;
2200                         }
2201
2202                         /* Only allow dynamic channel width changes */
2203                         if (chandef.chan != wdev->preset_chandef.chan) {
2204                                 result = -EBUSY;
2205                                 break;
2206                         }
2207                         result = rdev_set_ap_chanwidth(rdev, dev, &chandef);
2208                         if (result)
2209                                 break;
2210                 }
2211                 wdev->preset_chandef = chandef;
2212                 result = 0;
2213                 break;
2214         case NL80211_IFTYPE_MESH_POINT:
2215                 result = cfg80211_set_mesh_channel(rdev, wdev, &chandef);
2216                 break;
2217         case NL80211_IFTYPE_MONITOR:
2218                 result = cfg80211_set_monitor_channel(rdev, &chandef);
2219                 break;
2220         default:
2221                 result = -EINVAL;
2222         }
2223
2224         return result;
2225 }
2226
2227 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
2228 {
2229         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2230         struct net_device *netdev = info->user_ptr[1];
2231
2232         return __nl80211_set_channel(rdev, netdev, info);
2233 }
2234
2235 static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info)
2236 {
2237         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2238         struct net_device *dev = info->user_ptr[1];
2239         struct wireless_dev *wdev = dev->ieee80211_ptr;
2240         const u8 *bssid;
2241
2242         if (!info->attrs[NL80211_ATTR_MAC])
2243                 return -EINVAL;
2244
2245         if (netif_running(dev))
2246                 return -EBUSY;
2247
2248         if (!rdev->ops->set_wds_peer)
2249                 return -EOPNOTSUPP;
2250
2251         if (wdev->iftype != NL80211_IFTYPE_WDS)
2252                 return -EOPNOTSUPP;
2253
2254         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
2255         return rdev_set_wds_peer(rdev, dev, bssid);
2256 }
2257
2258 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
2259 {
2260         struct cfg80211_registered_device *rdev;
2261         struct net_device *netdev = NULL;
2262         struct wireless_dev *wdev;
2263         int result = 0, rem_txq_params = 0;
2264         struct nlattr *nl_txq_params;
2265         u32 changed;
2266         u8 retry_short = 0, retry_long = 0;
2267         u32 frag_threshold = 0, rts_threshold = 0;
2268         u8 coverage_class = 0;
2269
2270         ASSERT_RTNL();
2271
2272         /*
2273          * Try to find the wiphy and netdev. Normally this
2274          * function shouldn't need the netdev, but this is
2275          * done for backward compatibility -- previously
2276          * setting the channel was done per wiphy, but now
2277          * it is per netdev. Previous userland like hostapd
2278          * also passed a netdev to set_wiphy, so that it is
2279          * possible to let that go to the right netdev!
2280          */
2281
2282         if (info->attrs[NL80211_ATTR_IFINDEX]) {
2283                 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
2284
2285                 netdev = __dev_get_by_index(genl_info_net(info), ifindex);
2286                 if (netdev && netdev->ieee80211_ptr)
2287                         rdev = wiphy_to_rdev(netdev->ieee80211_ptr->wiphy);
2288                 else
2289                         netdev = NULL;
2290         }
2291
2292         if (!netdev) {
2293                 rdev = __cfg80211_rdev_from_attrs(genl_info_net(info),
2294                                                   info->attrs);
2295                 if (IS_ERR(rdev))
2296                         return PTR_ERR(rdev);
2297                 wdev = NULL;
2298                 netdev = NULL;
2299                 result = 0;
2300         } else
2301                 wdev = netdev->ieee80211_ptr;
2302
2303         /*
2304          * end workaround code, by now the rdev is available
2305          * and locked, and wdev may or may not be NULL.
2306          */
2307
2308         if (info->attrs[NL80211_ATTR_WIPHY_NAME])
2309                 result = cfg80211_dev_rename(
2310                         rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
2311
2312         if (result)
2313                 return result;
2314
2315         if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
2316                 struct ieee80211_txq_params txq_params;
2317                 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
2318
2319                 if (!rdev->ops->set_txq_params)
2320                         return -EOPNOTSUPP;
2321
2322                 if (!netdev)
2323                         return -EINVAL;
2324
2325                 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2326                     netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2327                         return -EINVAL;
2328
2329                 if (!netif_running(netdev))
2330                         return -ENETDOWN;
2331
2332                 nla_for_each_nested(nl_txq_params,
2333                                     info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
2334                                     rem_txq_params) {
2335                         result = nla_parse_nested(tb, NL80211_TXQ_ATTR_MAX,
2336                                                   nl_txq_params,
2337                                                   txq_params_policy,
2338                                                   info->extack);
2339                         if (result)
2340                                 return result;
2341                         result = parse_txq_params(tb, &txq_params);
2342                         if (result)
2343                                 return result;
2344
2345                         result = rdev_set_txq_params(rdev, netdev,
2346                                                      &txq_params);
2347                         if (result)
2348                                 return result;
2349                 }
2350         }
2351
2352         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
2353                 result = __nl80211_set_channel(
2354                         rdev,
2355                         nl80211_can_set_dev_channel(wdev) ? netdev : NULL,
2356                         info);
2357                 if (result)
2358                         return result;
2359         }
2360
2361         if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
2362                 struct wireless_dev *txp_wdev = wdev;
2363                 enum nl80211_tx_power_setting type;
2364                 int idx, mbm = 0;
2365
2366                 if (!(rdev->wiphy.features & NL80211_FEATURE_VIF_TXPOWER))
2367                         txp_wdev = NULL;
2368
2369                 if (!rdev->ops->set_tx_power)
2370                         return -EOPNOTSUPP;
2371
2372                 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
2373                 type = nla_get_u32(info->attrs[idx]);
2374
2375                 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
2376                     (type != NL80211_TX_POWER_AUTOMATIC))
2377                         return -EINVAL;
2378
2379                 if (type != NL80211_TX_POWER_AUTOMATIC) {
2380                         idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
2381                         mbm = nla_get_u32(info->attrs[idx]);
2382                 }
2383
2384                 result = rdev_set_tx_power(rdev, txp_wdev, type, mbm);
2385                 if (result)
2386                         return result;
2387         }
2388
2389         if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
2390             info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
2391                 u32 tx_ant, rx_ant;
2392
2393                 if ((!rdev->wiphy.available_antennas_tx &&
2394                      !rdev->wiphy.available_antennas_rx) ||
2395                     !rdev->ops->set_antenna)
2396                         return -EOPNOTSUPP;
2397
2398                 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
2399                 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
2400
2401                 /* reject antenna configurations which don't match the
2402                  * available antenna masks, except for the "all" mask */
2403                 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) ||
2404                     (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx)))
2405                         return -EINVAL;
2406
2407                 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx;
2408                 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx;
2409
2410                 result = rdev_set_antenna(rdev, tx_ant, rx_ant);
2411                 if (result)
2412                         return result;
2413         }
2414
2415         changed = 0;
2416
2417         if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
2418                 retry_short = nla_get_u8(
2419                         info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
2420                 if (retry_short == 0)
2421                         return -EINVAL;
2422
2423                 changed |= WIPHY_PARAM_RETRY_SHORT;
2424         }
2425
2426         if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
2427                 retry_long = nla_get_u8(
2428                         info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
2429                 if (retry_long == 0)
2430                         return -EINVAL;
2431
2432                 changed |= WIPHY_PARAM_RETRY_LONG;
2433         }
2434
2435         if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
2436                 frag_threshold = nla_get_u32(
2437                         info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
2438                 if (frag_threshold < 256)
2439                         return -EINVAL;
2440
2441                 if (frag_threshold != (u32) -1) {
2442                         /*
2443                          * Fragments (apart from the last one) are required to
2444                          * have even length. Make the fragmentation code
2445                          * simpler by stripping LSB should someone try to use
2446                          * odd threshold value.
2447                          */
2448                         frag_threshold &= ~0x1;
2449                 }
2450                 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
2451         }
2452
2453         if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
2454                 rts_threshold = nla_get_u32(
2455                         info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
2456                 changed |= WIPHY_PARAM_RTS_THRESHOLD;
2457         }
2458
2459         if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
2460                 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK])
2461                         return -EINVAL;
2462
2463                 coverage_class = nla_get_u8(
2464                         info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
2465                 changed |= WIPHY_PARAM_COVERAGE_CLASS;
2466         }
2467
2468         if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK]) {
2469                 if (!(rdev->wiphy.features & NL80211_FEATURE_ACKTO_ESTIMATION))
2470                         return -EOPNOTSUPP;
2471
2472                 changed |= WIPHY_PARAM_DYN_ACK;
2473         }
2474
2475         if (changed) {
2476                 u8 old_retry_short, old_retry_long;
2477                 u32 old_frag_threshold, old_rts_threshold;
2478                 u8 old_coverage_class;
2479
2480                 if (!rdev->ops->set_wiphy_params)
2481                         return -EOPNOTSUPP;
2482
2483                 old_retry_short = rdev->wiphy.retry_short;
2484                 old_retry_long = rdev->wiphy.retry_long;
2485                 old_frag_threshold = rdev->wiphy.frag_threshold;
2486                 old_rts_threshold = rdev->wiphy.rts_threshold;
2487                 old_coverage_class = rdev->wiphy.coverage_class;
2488
2489                 if (changed & WIPHY_PARAM_RETRY_SHORT)
2490                         rdev->wiphy.retry_short = retry_short;
2491                 if (changed & WIPHY_PARAM_RETRY_LONG)
2492                         rdev->wiphy.retry_long = retry_long;
2493                 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
2494                         rdev->wiphy.frag_threshold = frag_threshold;
2495                 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
2496                         rdev->wiphy.rts_threshold = rts_threshold;
2497                 if (changed & WIPHY_PARAM_COVERAGE_CLASS)
2498                         rdev->wiphy.coverage_class = coverage_class;
2499
2500                 result = rdev_set_wiphy_params(rdev, changed);
2501                 if (result) {
2502                         rdev->wiphy.retry_short = old_retry_short;
2503                         rdev->wiphy.retry_long = old_retry_long;
2504                         rdev->wiphy.frag_threshold = old_frag_threshold;
2505                         rdev->wiphy.rts_threshold = old_rts_threshold;
2506                         rdev->wiphy.coverage_class = old_coverage_class;
2507                         return result;
2508                 }
2509         }
2510         return 0;
2511 }
2512
2513 static inline u64 wdev_id(struct wireless_dev *wdev)
2514 {
2515         return (u64)wdev->identifier |
2516                ((u64)wiphy_to_rdev(wdev->wiphy)->wiphy_idx << 32);
2517 }
2518
2519 static int nl80211_send_chandef(struct sk_buff *msg,
2520                                 const struct cfg80211_chan_def *chandef)
2521 {
2522         if (WARN_ON(!cfg80211_chandef_valid(chandef)))
2523                 return -EINVAL;
2524
2525         if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
2526                         chandef->chan->center_freq))
2527                 return -ENOBUFS;
2528         switch (chandef->width) {
2529         case NL80211_CHAN_WIDTH_20_NOHT:
2530         case NL80211_CHAN_WIDTH_20:
2531         case NL80211_CHAN_WIDTH_40:
2532                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
2533                                 cfg80211_get_chandef_type(chandef)))
2534                         return -ENOBUFS;
2535                 break;
2536         default:
2537                 break;
2538         }
2539         if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, chandef->width))
2540                 return -ENOBUFS;
2541         if (nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1, chandef->center_freq1))
2542                 return -ENOBUFS;
2543         if (chandef->center_freq2 &&
2544             nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2, chandef->center_freq2))
2545                 return -ENOBUFS;
2546         return 0;
2547 }
2548
2549 static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags,
2550                               struct cfg80211_registered_device *rdev,
2551                               struct wireless_dev *wdev, bool removal)
2552 {
2553         struct net_device *dev = wdev->netdev;
2554         u8 cmd = NL80211_CMD_NEW_INTERFACE;
2555         void *hdr;
2556
2557         if (removal)
2558                 cmd = NL80211_CMD_DEL_INTERFACE;
2559
2560         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
2561         if (!hdr)
2562                 return -1;
2563
2564         if (dev &&
2565             (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
2566              nla_put_string(msg, NL80211_ATTR_IFNAME, dev->name)))
2567                 goto nla_put_failure;
2568
2569         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
2570             nla_put_u32(msg, NL80211_ATTR_IFTYPE, wdev->iftype) ||
2571             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
2572                               NL80211_ATTR_PAD) ||
2573             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, wdev_address(wdev)) ||
2574             nla_put_u32(msg, NL80211_ATTR_GENERATION,
2575                         rdev->devlist_generation ^
2576                         (cfg80211_rdev_list_generation << 2)))
2577                 goto nla_put_failure;
2578
2579         if (rdev->ops->get_channel) {
2580                 int ret;
2581                 struct cfg80211_chan_def chandef;
2582
2583                 ret = rdev_get_channel(rdev, wdev, &chandef);
2584                 if (ret == 0) {
2585                         if (nl80211_send_chandef(msg, &chandef))
2586                                 goto nla_put_failure;
2587                 }
2588         }
2589
2590         if (rdev->ops->get_tx_power) {
2591                 int dbm, ret;
2592
2593                 ret = rdev_get_tx_power(rdev, wdev, &dbm);
2594                 if (ret == 0 &&
2595                     nla_put_u32(msg, NL80211_ATTR_WIPHY_TX_POWER_LEVEL,
2596                                 DBM_TO_MBM(dbm)))
2597                         goto nla_put_failure;
2598         }
2599
2600         if (wdev->ssid_len) {
2601                 if (nla_put(msg, NL80211_ATTR_SSID, wdev->ssid_len, wdev->ssid))
2602                         goto nla_put_failure;
2603         }
2604
2605         genlmsg_end(msg, hdr);
2606         return 0;
2607
2608  nla_put_failure:
2609         genlmsg_cancel(msg, hdr);
2610         return -EMSGSIZE;
2611 }
2612
2613 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
2614 {
2615         int wp_idx = 0;
2616         int if_idx = 0;
2617         int wp_start = cb->args[0];
2618         int if_start = cb->args[1];
2619         int filter_wiphy = -1;
2620         struct cfg80211_registered_device *rdev;
2621         struct wireless_dev *wdev;
2622         int ret;
2623
2624         rtnl_lock();
2625         if (!cb->args[2]) {
2626                 struct nl80211_dump_wiphy_state state = {
2627                         .filter_wiphy = -1,
2628                 };
2629
2630                 ret = nl80211_dump_wiphy_parse(skb, cb, &state);
2631                 if (ret)
2632                         goto out_unlock;
2633
2634                 filter_wiphy = state.filter_wiphy;
2635
2636                 /*
2637                  * if filtering, set cb->args[2] to +1 since 0 is the default
2638                  * value needed to determine that parsing is necessary.
2639                  */
2640                 if (filter_wiphy >= 0)
2641                         cb->args[2] = filter_wiphy + 1;
2642                 else
2643                         cb->args[2] = -1;
2644         } else if (cb->args[2] > 0) {
2645                 filter_wiphy = cb->args[2] - 1;
2646         }
2647
2648         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
2649                 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
2650                         continue;
2651                 if (wp_idx < wp_start) {
2652                         wp_idx++;
2653                         continue;
2654                 }
2655
2656                 if (filter_wiphy >= 0 && filter_wiphy != rdev->wiphy_idx)
2657                         continue;
2658
2659                 if_idx = 0;
2660
2661                 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
2662                         if (if_idx < if_start) {
2663                                 if_idx++;
2664                                 continue;
2665                         }
2666                         if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).portid,
2667                                                cb->nlh->nlmsg_seq, NLM_F_MULTI,
2668                                                rdev, wdev, false) < 0) {
2669                                 goto out;
2670                         }
2671                         if_idx++;
2672                 }
2673
2674                 wp_idx++;
2675         }
2676  out:
2677         cb->args[0] = wp_idx;
2678         cb->args[1] = if_idx;
2679
2680         ret = skb->len;
2681  out_unlock:
2682         rtnl_unlock();
2683
2684         return ret;
2685 }
2686
2687 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
2688 {
2689         struct sk_buff *msg;
2690         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2691         struct wireless_dev *wdev = info->user_ptr[1];
2692
2693         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2694         if (!msg)
2695                 return -ENOMEM;
2696
2697         if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
2698                                rdev, wdev, false) < 0) {
2699                 nlmsg_free(msg);
2700                 return -ENOBUFS;
2701         }
2702
2703         return genlmsg_reply(msg, info);
2704 }
2705
2706 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
2707         [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
2708         [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
2709         [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
2710         [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
2711         [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
2712         [NL80211_MNTR_FLAG_ACTIVE] = { .type = NLA_FLAG },
2713 };
2714
2715 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
2716 {
2717         struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
2718         int flag;
2719
2720         *mntrflags = 0;
2721
2722         if (!nla)
2723                 return -EINVAL;
2724
2725         if (nla_parse_nested(flags, NL80211_MNTR_FLAG_MAX, nla,
2726                              mntr_flags_policy, NULL))
2727                 return -EINVAL;
2728
2729         for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
2730                 if (flags[flag])
2731                         *mntrflags |= (1<<flag);
2732
2733         *mntrflags |= MONITOR_FLAG_CHANGED;
2734
2735         return 0;
2736 }
2737
2738 static int nl80211_parse_mon_options(struct cfg80211_registered_device *rdev,
2739                                      enum nl80211_iftype type,
2740                                      struct genl_info *info,
2741                                      struct vif_params *params)
2742 {
2743         bool change = false;
2744         int err;
2745
2746         if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
2747                 if (type != NL80211_IFTYPE_MONITOR)
2748                         return -EINVAL;
2749
2750                 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
2751                                           &params->flags);
2752                 if (err)
2753                         return err;
2754
2755                 change = true;
2756         }
2757
2758         if (params->flags & MONITOR_FLAG_ACTIVE &&
2759             !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
2760                 return -EOPNOTSUPP;
2761
2762         if (info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]) {
2763                 const u8 *mumimo_groups;
2764                 u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER;
2765
2766                 if (type != NL80211_IFTYPE_MONITOR)
2767                         return -EINVAL;
2768
2769                 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag))
2770                         return -EOPNOTSUPP;
2771
2772                 mumimo_groups =
2773                         nla_data(info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]);
2774
2775                 /* bits 0 and 63 are reserved and must be zero */
2776                 if ((mumimo_groups[0] & BIT(0)) ||
2777                     (mumimo_groups[VHT_MUMIMO_GROUPS_DATA_LEN - 1] & BIT(7)))
2778                         return -EINVAL;
2779
2780                 params->vht_mumimo_groups = mumimo_groups;
2781                 change = true;
2782         }
2783
2784         if (info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR]) {
2785                 u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER;
2786
2787                 if (type != NL80211_IFTYPE_MONITOR)
2788                         return -EINVAL;
2789
2790                 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag))
2791                         return -EOPNOTSUPP;
2792
2793                 params->vht_mumimo_follow_addr =
2794                         nla_data(info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR]);
2795                 change = true;
2796         }
2797
2798         return change ? 1 : 0;
2799 }
2800
2801 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
2802                                struct net_device *netdev, u8 use_4addr,
2803                                enum nl80211_iftype iftype)
2804 {
2805         if (!use_4addr) {
2806                 if (netdev && (netdev->priv_flags & IFF_BRIDGE_PORT))
2807                         return -EBUSY;
2808                 return 0;
2809         }
2810
2811         switch (iftype) {
2812         case NL80211_IFTYPE_AP_VLAN:
2813                 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
2814                         return 0;
2815                 break;
2816         case NL80211_IFTYPE_STATION:
2817                 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
2818                         return 0;
2819                 break;
2820         default:
2821                 break;
2822         }
2823
2824         return -EOPNOTSUPP;
2825 }
2826
2827 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
2828 {
2829         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2830         struct vif_params params;
2831         int err;
2832         enum nl80211_iftype otype, ntype;
2833         struct net_device *dev = info->user_ptr[1];
2834         bool change = false;
2835
2836         memset(&params, 0, sizeof(params));
2837
2838         otype = ntype = dev->ieee80211_ptr->iftype;
2839
2840         if (info->attrs[NL80211_ATTR_IFTYPE]) {
2841                 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
2842                 if (otype != ntype)
2843                         change = true;
2844                 if (ntype > NL80211_IFTYPE_MAX)
2845                         return -EINVAL;
2846         }
2847
2848         if (info->attrs[NL80211_ATTR_MESH_ID]) {
2849                 struct wireless_dev *wdev = dev->ieee80211_ptr;
2850
2851                 if (ntype != NL80211_IFTYPE_MESH_POINT)
2852                         return -EINVAL;
2853                 if (netif_running(dev))
2854                         return -EBUSY;
2855
2856                 wdev_lock(wdev);
2857                 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
2858                              IEEE80211_MAX_MESH_ID_LEN);
2859                 wdev->mesh_id_up_len =
2860                         nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
2861                 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
2862                        wdev->mesh_id_up_len);
2863                 wdev_unlock(wdev);
2864         }
2865
2866         if (info->attrs[NL80211_ATTR_4ADDR]) {
2867                 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
2868                 change = true;
2869                 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
2870                 if (err)
2871                         return err;
2872         } else {
2873                 params.use_4addr = -1;
2874         }
2875
2876         err = nl80211_parse_mon_options(rdev, ntype, info, &params);
2877         if (err < 0)
2878                 return err;
2879         if (err > 0)
2880                 change = true;
2881
2882         if (change)
2883                 err = cfg80211_change_iface(rdev, dev, ntype, &params);
2884         else
2885                 err = 0;
2886
2887         if (!err && params.use_4addr != -1)
2888                 dev->ieee80211_ptr->use_4addr = params.use_4addr;
2889
2890         return err;
2891 }
2892
2893 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
2894 {
2895         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2896         struct vif_params params;
2897         struct wireless_dev *wdev;
2898         struct sk_buff *msg;
2899         int err;
2900         enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
2901
2902         /* to avoid failing a new interface creation due to pending removal */
2903         cfg80211_destroy_ifaces(rdev);
2904
2905         memset(&params, 0, sizeof(params));
2906
2907         if (!info->attrs[NL80211_ATTR_IFNAME])
2908                 return -EINVAL;
2909
2910         if (info->attrs[NL80211_ATTR_IFTYPE]) {
2911                 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
2912                 if (type > NL80211_IFTYPE_MAX)
2913                         return -EINVAL;
2914         }
2915
2916         if (!rdev->ops->add_virtual_intf ||
2917             !(rdev->wiphy.interface_modes & (1 << type)))
2918                 return -EOPNOTSUPP;
2919
2920         if ((type == NL80211_IFTYPE_P2P_DEVICE || type == NL80211_IFTYPE_NAN ||
2921              rdev->wiphy.features & NL80211_FEATURE_MAC_ON_CREATE) &&
2922             info->attrs[NL80211_ATTR_MAC]) {
2923                 nla_memcpy(params.macaddr, info->attrs[NL80211_ATTR_MAC],
2924                            ETH_ALEN);
2925                 if (!is_valid_ether_addr(params.macaddr))
2926                         return -EADDRNOTAVAIL;
2927         }
2928
2929         if (info->attrs[NL80211_ATTR_4ADDR]) {
2930                 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
2931                 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
2932                 if (err)
2933                         return err;
2934         }
2935
2936         err = nl80211_parse_mon_options(rdev, type, info, &params);
2937         if (err < 0)
2938                 return err;
2939
2940         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2941         if (!msg)
2942                 return -ENOMEM;
2943
2944         wdev = rdev_add_virtual_intf(rdev,
2945                                 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
2946                                 NET_NAME_USER, type, &params);
2947         if (WARN_ON(!wdev)) {
2948                 nlmsg_free(msg);
2949                 return -EPROTO;
2950         } else if (IS_ERR(wdev)) {
2951                 nlmsg_free(msg);
2952                 return PTR_ERR(wdev);
2953         }
2954
2955         if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
2956                 wdev->owner_nlportid = info->snd_portid;
2957
2958         switch (type) {
2959         case NL80211_IFTYPE_MESH_POINT:
2960                 if (!info->attrs[NL80211_ATTR_MESH_ID])
2961                         break;
2962                 wdev_lock(wdev);
2963                 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
2964                              IEEE80211_MAX_MESH_ID_LEN);
2965                 wdev->mesh_id_up_len =
2966                         nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
2967                 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
2968                        wdev->mesh_id_up_len);
2969                 wdev_unlock(wdev);
2970                 break;
2971         case NL80211_IFTYPE_NAN:
2972         case NL80211_IFTYPE_P2P_DEVICE:
2973                 /*
2974                  * P2P Device and NAN do not have a netdev, so don't go
2975                  * through the netdev notifier and must be added here
2976                  */
2977                 mutex_init(&wdev->mtx);
2978                 INIT_LIST_HEAD(&wdev->event_list);
2979                 spin_lock_init(&wdev->event_lock);
2980                 INIT_LIST_HEAD(&wdev->mgmt_registrations);
2981                 spin_lock_init(&wdev->mgmt_registrations_lock);
2982
2983                 wdev->identifier = ++rdev->wdev_id;
2984                 list_add_rcu(&wdev->list, &rdev->wiphy.wdev_list);
2985                 rdev->devlist_generation++;
2986                 break;
2987         default:
2988                 break;
2989         }
2990
2991         if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
2992                                rdev, wdev, false) < 0) {
2993                 nlmsg_free(msg);
2994                 return -ENOBUFS;
2995         }
2996
2997         /*
2998          * For wdevs which have no associated netdev object (e.g. of type
2999          * NL80211_IFTYPE_P2P_DEVICE), emit the NEW_INTERFACE event here.
3000          * For all other types, the event will be generated from the
3001          * netdev notifier
3002          */
3003         if (!wdev->netdev)
3004                 nl80211_notify_iface(rdev, wdev, NL80211_CMD_NEW_INTERFACE);
3005
3006         return genlmsg_reply(msg, info);
3007 }
3008
3009 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
3010 {
3011         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3012         struct wireless_dev *wdev = info->user_ptr[1];
3013
3014         if (!rdev->ops->del_virtual_intf)
3015                 return -EOPNOTSUPP;
3016
3017         /*
3018          * If we remove a wireless device without a netdev then clear
3019          * user_ptr[1] so that nl80211_post_doit won't dereference it
3020          * to check if it needs to do dev_put(). Otherwise it crashes
3021          * since the wdev has been freed, unlike with a netdev where
3022          * we need the dev_put() for the netdev to really be freed.
3023          */
3024         if (!wdev->netdev)
3025                 info->user_ptr[1] = NULL;
3026
3027         return rdev_del_virtual_intf(rdev, wdev);
3028 }
3029
3030 static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info)
3031 {
3032         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3033         struct net_device *dev = info->user_ptr[1];
3034         u16 noack_map;
3035
3036         if (!info->attrs[NL80211_ATTR_NOACK_MAP])
3037                 return -EINVAL;
3038
3039         if (!rdev->ops->set_noack_map)
3040                 return -EOPNOTSUPP;
3041
3042         noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]);
3043
3044         return rdev_set_noack_map(rdev, dev, noack_map);
3045 }
3046
3047 struct get_key_cookie {
3048         struct sk_buff *msg;
3049         int error;
3050         int idx;
3051 };
3052
3053 static void get_key_callback(void *c, struct key_params *params)
3054 {
3055         struct nlattr *key;
3056         struct get_key_cookie *cookie = c;
3057
3058         if ((params->key &&
3059              nla_put(cookie->msg, NL80211_ATTR_KEY_DATA,
3060                      params->key_len, params->key)) ||
3061             (params->seq &&
3062              nla_put(cookie->msg, NL80211_ATTR_KEY_SEQ,
3063                      params->seq_len, params->seq)) ||
3064             (params->cipher &&
3065              nla_put_u32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
3066                          params->cipher)))
3067                 goto nla_put_failure;
3068
3069         key = nla_nest_start(cookie->msg, NL80211_ATTR_KEY);
3070         if (!key)
3071                 goto nla_put_failure;
3072
3073         if ((params->key &&
3074              nla_put(cookie->msg, NL80211_KEY_DATA,
3075                      params->key_len, params->key)) ||
3076             (params->seq &&
3077              nla_put(cookie->msg, NL80211_KEY_SEQ,
3078                      params->seq_len, params->seq)) ||
3079             (params->cipher &&
3080              nla_put_u32(cookie->msg, NL80211_KEY_CIPHER,
3081                          params->cipher)))
3082                 goto nla_put_failure;
3083
3084         if (nla_put_u8(cookie->msg, NL80211_ATTR_KEY_IDX, cookie->idx))
3085                 goto nla_put_failure;
3086
3087         nla_nest_end(cookie->msg, key);
3088
3089         return;
3090  nla_put_failure:
3091         cookie->error = 1;
3092 }
3093
3094 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
3095 {
3096         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3097         int err;
3098         struct net_device *dev = info->user_ptr[1];
3099         u8 key_idx = 0;
3100         const u8 *mac_addr = NULL;
3101         bool pairwise;
3102         struct get_key_cookie cookie = {
3103                 .error = 0,
3104         };
3105         void *hdr;
3106         struct sk_buff *msg;
3107
3108         if (info->attrs[NL80211_ATTR_KEY_IDX])
3109                 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
3110
3111         if (key_idx > 5)
3112                 return -EINVAL;
3113
3114         if (info->attrs[NL80211_ATTR_MAC])
3115                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3116
3117         pairwise = !!mac_addr;
3118         if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
3119                 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
3120
3121                 if (kt >= NUM_NL80211_KEYTYPES)
3122                         return -EINVAL;
3123                 if (kt != NL80211_KEYTYPE_GROUP &&
3124                     kt != NL80211_KEYTYPE_PAIRWISE)
3125                         return -EINVAL;
3126                 pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
3127         }
3128
3129         if (!rdev->ops->get_key)
3130                 return -EOPNOTSUPP;
3131
3132         if (!pairwise && mac_addr && !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
3133                 return -ENOENT;
3134
3135         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3136         if (!msg)
3137                 return -ENOMEM;
3138
3139         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
3140                              NL80211_CMD_NEW_KEY);
3141         if (!hdr)
3142                 goto nla_put_failure;
3143
3144         cookie.msg = msg;
3145         cookie.idx = key_idx;
3146
3147         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3148             nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx))
3149                 goto nla_put_failure;
3150         if (mac_addr &&
3151             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
3152                 goto nla_put_failure;
3153
3154         err = rdev_get_key(rdev, dev, key_idx, pairwise, mac_addr, &cookie,
3155                            get_key_callback);
3156
3157         if (err)
3158                 goto free_msg;
3159
3160         if (cookie.error)
3161                 goto nla_put_failure;
3162
3163         genlmsg_end(msg, hdr);
3164         return genlmsg_reply(msg, info);
3165
3166  nla_put_failure:
3167         err = -ENOBUFS;
3168  free_msg:
3169         nlmsg_free(msg);
3170         return err;
3171 }
3172
3173 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
3174 {
3175         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3176         struct key_parse key;
3177         int err;
3178         struct net_device *dev = info->user_ptr[1];
3179
3180         err = nl80211_parse_key(info, &key);
3181         if (err)
3182                 return err;
3183
3184         if (key.idx < 0)
3185                 return -EINVAL;
3186
3187         /* only support setting default key */
3188         if (!key.def && !key.defmgmt)
3189                 return -EINVAL;
3190
3191         wdev_lock(dev->ieee80211_ptr);
3192
3193         if (key.def) {
3194                 if (!rdev->ops->set_default_key) {
3195                         err = -EOPNOTSUPP;
3196                         goto out;
3197                 }
3198
3199                 err = nl80211_key_allowed(dev->ieee80211_ptr);
3200                 if (err)
3201                         goto out;
3202
3203                 err = rdev_set_default_key(rdev, dev, key.idx,
3204                                                  key.def_uni, key.def_multi);
3205
3206                 if (err)
3207                         goto out;
3208
3209 #ifdef CONFIG_CFG80211_WEXT
3210                 dev->ieee80211_ptr->wext.default_key = key.idx;
3211 #endif
3212         } else {
3213                 if (key.def_uni || !key.def_multi) {
3214                         err = -EINVAL;
3215                         goto out;
3216                 }
3217
3218                 if (!rdev->ops->set_default_mgmt_key) {
3219                         err = -EOPNOTSUPP;
3220                         goto out;
3221                 }
3222
3223                 err = nl80211_key_allowed(dev->ieee80211_ptr);
3224                 if (err)
3225                         goto out;
3226
3227                 err = rdev_set_default_mgmt_key(rdev, dev, key.idx);
3228                 if (err)
3229                         goto out;
3230
3231 #ifdef CONFIG_CFG80211_WEXT
3232                 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx;
3233 #endif
3234         }
3235
3236  out:
3237         wdev_unlock(dev->ieee80211_ptr);
3238
3239         return err;
3240 }
3241
3242 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
3243 {
3244         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3245         int err;
3246         struct net_device *dev = info->user_ptr[1];
3247         struct key_parse key;
3248         const u8 *mac_addr = NULL;
3249
3250         err = nl80211_parse_key(info, &key);
3251         if (err)
3252                 return err;
3253
3254         if (!key.p.key)
3255                 return -EINVAL;
3256
3257         if (info->attrs[NL80211_ATTR_MAC])
3258                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3259
3260         if (key.type == -1) {
3261                 if (mac_addr)
3262                         key.type = NL80211_KEYTYPE_PAIRWISE;
3263                 else
3264                         key.type = NL80211_KEYTYPE_GROUP;
3265         }
3266
3267         /* for now */
3268         if (key.type != NL80211_KEYTYPE_PAIRWISE &&
3269             key.type != NL80211_KEYTYPE_GROUP)
3270                 return -EINVAL;
3271
3272         if (!rdev->ops->add_key)
3273                 return -EOPNOTSUPP;
3274
3275         if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
3276                                            key.type == NL80211_KEYTYPE_PAIRWISE,
3277                                            mac_addr))
3278                 return -EINVAL;
3279
3280         wdev_lock(dev->ieee80211_ptr);
3281         err = nl80211_key_allowed(dev->ieee80211_ptr);
3282         if (!err)
3283                 err = rdev_add_key(rdev, dev, key.idx,
3284                                    key.type == NL80211_KEYTYPE_PAIRWISE,
3285                                     mac_addr, &key.p);
3286         wdev_unlock(dev->ieee80211_ptr);
3287
3288         return err;
3289 }
3290
3291 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
3292 {
3293         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3294         int err;
3295         struct net_device *dev = info->user_ptr[1];
3296         u8 *mac_addr = NULL;
3297         struct key_parse key;
3298
3299         err = nl80211_parse_key(info, &key);
3300         if (err)
3301                 return err;
3302
3303         if (info->attrs[NL80211_ATTR_MAC])
3304                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3305
3306         if (key.type == -1) {
3307                 if (mac_addr)
3308                         key.type = NL80211_KEYTYPE_PAIRWISE;
3309                 else
3310                         key.type = NL80211_KEYTYPE_GROUP;
3311         }
3312
3313         /* for now */
3314         if (key.type != NL80211_KEYTYPE_PAIRWISE &&
3315             key.type != NL80211_KEYTYPE_GROUP)
3316                 return -EINVAL;
3317
3318         if (!rdev->ops->del_key)
3319                 return -EOPNOTSUPP;
3320
3321         wdev_lock(dev->ieee80211_ptr);
3322         err = nl80211_key_allowed(dev->ieee80211_ptr);
3323
3324         if (key.type == NL80211_KEYTYPE_GROUP && mac_addr &&
3325             !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
3326                 err = -ENOENT;
3327
3328         if (!err)
3329                 err = rdev_del_key(rdev, dev, key.idx,
3330                                    key.type == NL80211_KEYTYPE_PAIRWISE,
3331                                    mac_addr);
3332
3333 #ifdef CONFIG_CFG80211_WEXT
3334         if (!err) {
3335                 if (key.idx == dev->ieee80211_ptr->wext.default_key)
3336                         dev->ieee80211_ptr->wext.default_key = -1;
3337                 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key)
3338                         dev->ieee80211_ptr->wext.default_mgmt_key = -1;
3339         }
3340 #endif
3341         wdev_unlock(dev->ieee80211_ptr);
3342
3343         return err;
3344 }
3345
3346 /* This function returns an error or the number of nested attributes */
3347 static int validate_acl_mac_addrs(struct nlattr *nl_attr)
3348 {
3349         struct nlattr *attr;
3350         int n_entries = 0, tmp;
3351
3352         nla_for_each_nested(attr, nl_attr, tmp) {
3353                 if (nla_len(attr) != ETH_ALEN)
3354                         return -EINVAL;
3355
3356                 n_entries++;
3357         }
3358
3359         return n_entries;
3360 }
3361
3362 /*
3363  * This function parses ACL information and allocates memory for ACL data.
3364  * On successful return, the calling function is responsible to free the
3365  * ACL buffer returned by this function.
3366  */
3367 static struct cfg80211_acl_data *parse_acl_data(struct wiphy *wiphy,
3368                                                 struct genl_info *info)
3369 {
3370         enum nl80211_acl_policy acl_policy;
3371         struct nlattr *attr;
3372         struct cfg80211_acl_data *acl;
3373         int i = 0, n_entries, tmp;
3374
3375         if (!wiphy->max_acl_mac_addrs)
3376                 return ERR_PTR(-EOPNOTSUPP);
3377
3378         if (!info->attrs[NL80211_ATTR_ACL_POLICY])
3379                 return ERR_PTR(-EINVAL);
3380
3381         acl_policy = nla_get_u32(info->attrs[NL80211_ATTR_ACL_POLICY]);
3382         if (acl_policy != NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED &&
3383             acl_policy != NL80211_ACL_POLICY_DENY_UNLESS_LISTED)
3384                 return ERR_PTR(-EINVAL);
3385
3386         if (!info->attrs[NL80211_ATTR_MAC_ADDRS])
3387                 return ERR_PTR(-EINVAL);
3388
3389         n_entries = validate_acl_mac_addrs(info->attrs[NL80211_ATTR_MAC_ADDRS]);
3390         if (n_entries < 0)
3391                 return ERR_PTR(n_entries);
3392
3393         if (n_entries > wiphy->max_acl_mac_addrs)
3394                 return ERR_PTR(-ENOTSUPP);
3395
3396         acl = kzalloc(sizeof(*acl) + (sizeof(struct mac_address) * n_entries),
3397                       GFP_KERNEL);
3398         if (!acl)
3399                 return ERR_PTR(-ENOMEM);
3400
3401         nla_for_each_nested(attr, info->attrs[NL80211_ATTR_MAC_ADDRS], tmp) {
3402                 memcpy(acl->mac_addrs[i].addr, nla_data(attr), ETH_ALEN);
3403                 i++;
3404         }
3405
3406         acl->n_acl_entries = n_entries;
3407         acl->acl_policy = acl_policy;
3408
3409         return acl;
3410 }
3411
3412 static int nl80211_set_mac_acl(struct sk_buff *skb, struct genl_info *info)
3413 {
3414         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3415         struct net_device *dev = info->user_ptr[1];
3416         struct cfg80211_acl_data *acl;
3417         int err;
3418
3419         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3420             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3421                 return -EOPNOTSUPP;
3422
3423         if (!dev->ieee80211_ptr->beacon_interval)
3424                 return -EINVAL;
3425
3426         acl = parse_acl_data(&rdev->wiphy, info);
3427         if (IS_ERR(acl))
3428                 return PTR_ERR(acl);
3429
3430         err = rdev_set_mac_acl(rdev, dev, acl);
3431
3432         kfree(acl);
3433
3434         return err;
3435 }
3436
3437 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
3438                            u8 *rates, u8 rates_len)
3439 {
3440         u8 i;
3441         u32 mask = 0;
3442
3443         for (i = 0; i < rates_len; i++) {
3444                 int rate = (rates[i] & 0x7f) * 5;
3445                 int ridx;
3446
3447                 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
3448                         struct ieee80211_rate *srate =
3449                                 &sband->bitrates[ridx];
3450                         if (rate == srate->bitrate) {
3451                                 mask |= 1 << ridx;
3452                                 break;
3453                         }
3454                 }
3455                 if (ridx == sband->n_bitrates)
3456                         return 0; /* rate not found */
3457         }
3458
3459         return mask;
3460 }
3461
3462 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband,
3463                                u8 *rates, u8 rates_len,
3464                                u8 mcs[IEEE80211_HT_MCS_MASK_LEN])
3465 {
3466         u8 i;
3467
3468         memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN);
3469
3470         for (i = 0; i < rates_len; i++) {
3471                 int ridx, rbit;
3472
3473                 ridx = rates[i] / 8;
3474                 rbit = BIT(rates[i] % 8);
3475
3476                 /* check validity */
3477                 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN))
3478                         return false;
3479
3480                 /* check availability */
3481                 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit)
3482                         mcs[ridx] |= rbit;
3483                 else
3484                         return false;
3485         }
3486
3487         return true;
3488 }
3489
3490 static u16 vht_mcs_map_to_mcs_mask(u8 vht_mcs_map)
3491 {
3492         u16 mcs_mask = 0;
3493
3494         switch (vht_mcs_map) {
3495         case IEEE80211_VHT_MCS_NOT_SUPPORTED:
3496                 break;
3497         case IEEE80211_VHT_MCS_SUPPORT_0_7:
3498                 mcs_mask = 0x00FF;
3499                 break;
3500         case IEEE80211_VHT_MCS_SUPPORT_0_8:
3501                 mcs_mask = 0x01FF;
3502                 break;
3503         case IEEE80211_VHT_MCS_SUPPORT_0_9:
3504                 mcs_mask = 0x03FF;
3505                 break;
3506         default:
3507                 break;
3508         }
3509
3510         return mcs_mask;
3511 }
3512
3513 static void vht_build_mcs_mask(u16 vht_mcs_map,
3514                                u16 vht_mcs_mask[NL80211_VHT_NSS_MAX])
3515 {
3516         u8 nss;
3517
3518         for (nss = 0; nss < NL80211_VHT_NSS_MAX; nss++) {
3519                 vht_mcs_mask[nss] = vht_mcs_map_to_mcs_mask(vht_mcs_map & 0x03);
3520                 vht_mcs_map >>= 2;
3521         }
3522 }
3523
3524 static bool vht_set_mcs_mask(struct ieee80211_supported_band *sband,
3525                              struct nl80211_txrate_vht *txrate,
3526                              u16 mcs[NL80211_VHT_NSS_MAX])
3527 {
3528         u16 tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
3529         u16 tx_mcs_mask[NL80211_VHT_NSS_MAX] = {};
3530         u8 i;
3531
3532         if (!sband->vht_cap.vht_supported)
3533                 return false;
3534
3535         memset(mcs, 0, sizeof(u16) * NL80211_VHT_NSS_MAX);
3536
3537         /* Build vht_mcs_mask from VHT capabilities */
3538         vht_build_mcs_mask(tx_mcs_map, tx_mcs_mask);
3539
3540         for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
3541                 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i])
3542                         mcs[i] = txrate->mcs[i];
3543                 else
3544                         return false;
3545         }
3546
3547         return true;
3548 }
3549
3550 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
3551         [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
3552                                     .len = NL80211_MAX_SUPP_RATES },
3553         [NL80211_TXRATE_HT] = { .type = NLA_BINARY,
3554                                 .len = NL80211_MAX_SUPP_HT_RATES },
3555         [NL80211_TXRATE_VHT] = { .len = sizeof(struct nl80211_txrate_vht)},
3556         [NL80211_TXRATE_GI] = { .type = NLA_U8 },
3557 };
3558
3559 static int nl80211_parse_tx_bitrate_mask(struct genl_info *info,
3560                                          struct cfg80211_bitrate_mask *mask)
3561 {
3562         struct nlattr *tb[NL80211_TXRATE_MAX + 1];
3563         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3564         int rem, i;
3565         struct nlattr *tx_rates;
3566         struct ieee80211_supported_band *sband;
3567         u16 vht_tx_mcs_map;
3568
3569         memset(mask, 0, sizeof(*mask));
3570         /* Default to all rates enabled */
3571         for (i = 0; i < NUM_NL80211_BANDS; i++) {
3572                 sband = rdev->wiphy.bands[i];
3573
3574                 if (!sband)
3575                         continue;
3576
3577                 mask->control[i].legacy = (1 << sband->n_bitrates) - 1;
3578                 memcpy(mask->control[i].ht_mcs,
3579                        sband->ht_cap.mcs.rx_mask,
3580                        sizeof(mask->control[i].ht_mcs));
3581
3582                 if (!sband->vht_cap.vht_supported)
3583                         continue;
3584
3585                 vht_tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
3586                 vht_build_mcs_mask(vht_tx_mcs_map, mask->control[i].vht_mcs);
3587         }
3588
3589         /* if no rates are given set it back to the defaults */
3590         if (!info->attrs[NL80211_ATTR_TX_RATES])
3591                 goto out;
3592
3593         /* The nested attribute uses enum nl80211_band as the index. This maps
3594          * directly to the enum nl80211_band values used in cfg80211.
3595          */
3596         BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8);
3597         nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem) {
3598                 enum nl80211_band band = nla_type(tx_rates);
3599                 int err;
3600
3601                 if (band < 0 || band >= NUM_NL80211_BANDS)
3602                         return -EINVAL;
3603                 sband = rdev->wiphy.bands[band];
3604                 if (sband == NULL)
3605                         return -EINVAL;
3606                 err = nla_parse_nested(tb, NL80211_TXRATE_MAX, tx_rates,
3607                                        nl80211_txattr_policy, info->extack);
3608                 if (err)
3609                         return err;
3610                 if (tb[NL80211_TXRATE_LEGACY]) {
3611                         mask->control[band].legacy = rateset_to_mask(
3612                                 sband,
3613                                 nla_data(tb[NL80211_TXRATE_LEGACY]),
3614                                 nla_len(tb[NL80211_TXRATE_LEGACY]));
3615                         if ((mask->control[band].legacy == 0) &&
3616                             nla_len(tb[NL80211_TXRATE_LEGACY]))
3617                                 return -EINVAL;
3618                 }
3619                 if (tb[NL80211_TXRATE_HT]) {
3620                         if (!ht_rateset_to_mask(
3621                                         sband,
3622                                         nla_data(tb[NL80211_TXRATE_HT]),
3623                                         nla_len(tb[NL80211_TXRATE_HT]),
3624                                         mask->control[band].ht_mcs))
3625                                 return -EINVAL;
3626                 }
3627                 if (tb[NL80211_TXRATE_VHT]) {
3628                         if (!vht_set_mcs_mask(
3629                                         sband,
3630                                         nla_data(tb[NL80211_TXRATE_VHT]),
3631                                         mask->control[band].vht_mcs))
3632                                 return -EINVAL;
3633                 }
3634                 if (tb[NL80211_TXRATE_GI]) {
3635                         mask->control[band].gi =
3636                                 nla_get_u8(tb[NL80211_TXRATE_GI]);
3637                         if (mask->control[band].gi > NL80211_TXRATE_FORCE_LGI)
3638                                 return -EINVAL;
3639                 }
3640
3641                 if (mask->control[band].legacy == 0) {
3642                         /* don't allow empty legacy rates if HT or VHT
3643                          * are not even supported.
3644                          */
3645                         if (!(rdev->wiphy.bands[band]->ht_cap.ht_supported ||
3646                               rdev->wiphy.bands[band]->vht_cap.vht_supported))
3647                                 return -EINVAL;
3648
3649                         for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
3650                                 if (mask->control[band].ht_mcs[i])
3651                                         goto out;
3652
3653                         for (i = 0; i < NL80211_VHT_NSS_MAX; i++)
3654                                 if (mask->control[band].vht_mcs[i])
3655                                         goto out;
3656
3657                         /* legacy and mcs rates may not be both empty */
3658                         return -EINVAL;
3659                 }
3660         }
3661
3662 out:
3663         return 0;
3664 }
3665
3666 static int validate_beacon_tx_rate(struct cfg80211_registered_device *rdev,
3667                                    enum nl80211_band band,
3668                                    struct cfg80211_bitrate_mask *beacon_rate)
3669 {
3670         u32 count_ht, count_vht, i;
3671         u32 rate = beacon_rate->control[band].legacy;
3672
3673         /* Allow only one rate */
3674         if (hweight32(rate) > 1)
3675                 return -EINVAL;
3676
3677         count_ht = 0;
3678         for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++) {
3679                 if (hweight8(beacon_rate->control[band].ht_mcs[i]) > 1) {
3680                         return -EINVAL;
3681                 } else if (beacon_rate->control[band].ht_mcs[i]) {
3682                         count_ht++;
3683                         if (count_ht > 1)
3684                                 return -EINVAL;
3685                 }
3686                 if (count_ht && rate)
3687                         return -EINVAL;
3688         }
3689
3690         count_vht = 0;
3691         for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
3692                 if (hweight16(beacon_rate->control[band].vht_mcs[i]) > 1) {
3693                         return -EINVAL;
3694                 } else if (beacon_rate->control[band].vht_mcs[i]) {
3695                         count_vht++;
3696                         if (count_vht > 1)
3697                                 return -EINVAL;
3698                 }
3699                 if (count_vht && rate)
3700                         return -EINVAL;
3701         }
3702
3703         if ((count_ht && count_vht) || (!rate && !count_ht && !count_vht))
3704                 return -EINVAL;
3705
3706         if (rate &&
3707             !wiphy_ext_feature_isset(&rdev->wiphy,
3708                                      NL80211_EXT_FEATURE_BEACON_RATE_LEGACY))
3709                 return -EINVAL;
3710         if (count_ht &&
3711             !wiphy_ext_feature_isset(&rdev->wiphy,
3712                                      NL80211_EXT_FEATURE_BEACON_RATE_HT))
3713                 return -EINVAL;
3714         if (count_vht &&
3715             !wiphy_ext_feature_isset(&rdev->wiphy,
3716                                      NL80211_EXT_FEATURE_BEACON_RATE_VHT))
3717                 return -EINVAL;
3718
3719         return 0;
3720 }
3721
3722 static int nl80211_parse_beacon(struct nlattr *attrs[],
3723                                 struct cfg80211_beacon_data *bcn)
3724 {
3725         bool haveinfo = false;
3726
3727         if (!is_valid_ie_attr(attrs[NL80211_ATTR_BEACON_TAIL]) ||
3728             !is_valid_ie_attr(attrs[NL80211_ATTR_IE]) ||
3729             !is_valid_ie_attr(attrs[NL80211_ATTR_IE_PROBE_RESP]) ||
3730             !is_valid_ie_attr(attrs[NL80211_ATTR_IE_ASSOC_RESP]))
3731                 return -EINVAL;
3732
3733         memset(bcn, 0, sizeof(*bcn));
3734
3735         if (attrs[NL80211_ATTR_BEACON_HEAD]) {
3736                 bcn->head = nla_data(attrs[NL80211_ATTR_BEACON_HEAD]);
3737                 bcn->head_len = nla_len(attrs[NL80211_ATTR_BEACON_HEAD]);
3738                 if (!bcn->head_len)
3739                         return -EINVAL;
3740                 haveinfo = true;
3741         }
3742
3743         if (attrs[NL80211_ATTR_BEACON_TAIL]) {
3744                 bcn->tail = nla_data(attrs[NL80211_ATTR_BEACON_TAIL]);
3745                 bcn->tail_len = nla_len(attrs[NL80211_ATTR_BEACON_TAIL]);
3746                 haveinfo = true;
3747         }
3748
3749         if (!haveinfo)
3750                 return -EINVAL;
3751
3752         if (attrs[NL80211_ATTR_IE]) {
3753                 bcn->beacon_ies = nla_data(attrs[NL80211_ATTR_IE]);
3754                 bcn->beacon_ies_len = nla_len(attrs[NL80211_ATTR_IE]);
3755         }
3756
3757         if (attrs[NL80211_ATTR_IE_PROBE_RESP]) {
3758                 bcn->proberesp_ies =
3759                         nla_data(attrs[NL80211_ATTR_IE_PROBE_RESP]);
3760                 bcn->proberesp_ies_len =
3761                         nla_len(attrs[NL80211_ATTR_IE_PROBE_RESP]);
3762         }
3763
3764         if (attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
3765                 bcn->assocresp_ies =
3766                         nla_data(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
3767                 bcn->assocresp_ies_len =
3768                         nla_len(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
3769         }
3770
3771         if (attrs[NL80211_ATTR_PROBE_RESP]) {
3772                 bcn->probe_resp = nla_data(attrs[NL80211_ATTR_PROBE_RESP]);
3773                 bcn->probe_resp_len = nla_len(attrs[NL80211_ATTR_PROBE_RESP]);
3774         }
3775
3776         return 0;
3777 }
3778
3779 static void nl80211_check_ap_rate_selectors(struct cfg80211_ap_settings *params,
3780                                             const u8 *rates)
3781 {
3782         int i;
3783
3784         if (!rates)
3785                 return;
3786
3787         for (i = 0; i < rates[1]; i++) {
3788                 if (rates[2 + i] == BSS_MEMBERSHIP_SELECTOR_HT_PHY)
3789                         params->ht_required = true;
3790                 if (rates[2 + i] == BSS_MEMBERSHIP_SELECTOR_VHT_PHY)
3791                         params->vht_required = true;
3792         }
3793 }
3794
3795 /*
3796  * Since the nl80211 API didn't include, from the beginning, attributes about
3797  * HT/VHT requirements/capabilities, we parse them out of the IEs for the
3798  * benefit of drivers that rebuild IEs in the firmware.
3799  */
3800 static void nl80211_calculate_ap_params(struct cfg80211_ap_settings *params)
3801 {
3802         const struct cfg80211_beacon_data *bcn = &params->beacon;
3803         size_t ies_len = bcn->tail_len;
3804         const u8 *ies = bcn->tail;
3805         const u8 *rates;
3806         const u8 *cap;
3807
3808         rates = cfg80211_find_ie(WLAN_EID_SUPP_RATES, ies, ies_len);
3809         nl80211_check_ap_rate_selectors(params, rates);
3810
3811         rates = cfg80211_find_ie(WLAN_EID_EXT_SUPP_RATES, ies, ies_len);
3812         nl80211_check_ap_rate_selectors(params, rates);
3813
3814         cap = cfg80211_find_ie(WLAN_EID_HT_CAPABILITY, ies, ies_len);
3815         if (cap && cap[1] >= sizeof(*params->ht_cap))
3816                 params->ht_cap = (void *)(cap + 2);
3817         cap = cfg80211_find_ie(WLAN_EID_VHT_CAPABILITY, ies, ies_len);
3818         if (cap && cap[1] >= sizeof(*params->vht_cap))
3819                 params->vht_cap = (void *)(cap + 2);
3820 }
3821
3822 static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev,
3823                                    struct cfg80211_ap_settings *params)
3824 {
3825         struct wireless_dev *wdev;
3826         bool ret = false;
3827
3828         list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
3829                 if (wdev->iftype != NL80211_IFTYPE_AP &&
3830                     wdev->iftype != NL80211_IFTYPE_P2P_GO)
3831                         continue;
3832
3833                 if (!wdev->preset_chandef.chan)
3834                         continue;
3835
3836                 params->chandef = wdev->preset_chandef;
3837                 ret = true;
3838                 break;
3839         }
3840
3841         return ret;
3842 }
3843
3844 static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev,
3845                                     enum nl80211_auth_type auth_type,
3846                                     enum nl80211_commands cmd)
3847 {
3848         if (auth_type > NL80211_AUTHTYPE_MAX)
3849                 return false;
3850
3851         switch (cmd) {
3852         case NL80211_CMD_AUTHENTICATE:
3853                 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
3854                     auth_type == NL80211_AUTHTYPE_SAE)
3855                         return false;
3856                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
3857                                              NL80211_EXT_FEATURE_FILS_STA) &&
3858                     (auth_type == NL80211_AUTHTYPE_FILS_SK ||
3859                      auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
3860                      auth_type == NL80211_AUTHTYPE_FILS_PK))
3861                         return false;
3862                 return true;
3863         case NL80211_CMD_CONNECT:
3864                 /* SAE not supported yet */
3865                 if (auth_type == NL80211_AUTHTYPE_SAE)
3866                         return false;
3867                 /* FILS with SK PFS or PK not supported yet */
3868                 if (auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
3869                     auth_type == NL80211_AUTHTYPE_FILS_PK)
3870                         return false;
3871                 if (!wiphy_ext_feature_isset(
3872                             &rdev->wiphy,
3873                             NL80211_EXT_FEATURE_FILS_SK_OFFLOAD) &&
3874                     auth_type == NL80211_AUTHTYPE_FILS_SK)
3875                         return false;
3876                 return true;
3877         case NL80211_CMD_START_AP:
3878                 /* SAE not supported yet */
3879                 if (auth_type == NL80211_AUTHTYPE_SAE)
3880                         return false;
3881                 /* FILS not supported yet */
3882                 if (auth_type == NL80211_AUTHTYPE_FILS_SK ||
3883                     auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
3884                     auth_type == NL80211_AUTHTYPE_FILS_PK)
3885                         return false;
3886                 return true;
3887         default:
3888                 return false;
3889         }
3890 }
3891
3892 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
3893 {
3894         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3895         struct net_device *dev = info->user_ptr[1];
3896         struct wireless_dev *wdev = dev->ieee80211_ptr;
3897         struct cfg80211_ap_settings params;
3898         int err;
3899
3900         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3901             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3902                 return -EOPNOTSUPP;
3903
3904         if (!rdev->ops->start_ap)
3905                 return -EOPNOTSUPP;
3906
3907         if (wdev->beacon_interval)
3908                 return -EALREADY;
3909
3910         memset(&params, 0, sizeof(params));
3911
3912         /* these are required for START_AP */
3913         if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
3914             !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
3915             !info->attrs[NL80211_ATTR_BEACON_HEAD])
3916                 return -EINVAL;
3917
3918         err = nl80211_parse_beacon(info->attrs, &params.beacon);
3919         if (err)
3920                 return err;
3921
3922         params.beacon_interval =
3923                 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
3924         params.dtim_period =
3925                 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
3926
3927         err = cfg80211_validate_beacon_int(rdev, dev->ieee80211_ptr->iftype,
3928                                            params.beacon_interval);
3929         if (err)
3930                 return err;
3931
3932         /*
3933          * In theory, some of these attributes should be required here
3934          * but since they were not used when the command was originally
3935          * added, keep them optional for old user space programs to let
3936          * them continue to work with drivers that do not need the
3937          * additional information -- drivers must check!
3938          */
3939         if (info->attrs[NL80211_ATTR_SSID]) {
3940                 params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
3941                 params.ssid_len =
3942                         nla_len(info->attrs[NL80211_ATTR_SSID]);
3943                 if (params.ssid_len == 0 ||
3944                     params.ssid_len > IEEE80211_MAX_SSID_LEN)
3945                         return -EINVAL;
3946         }
3947
3948         if (info->attrs[NL80211_ATTR_HIDDEN_SSID]) {
3949                 params.hidden_ssid = nla_get_u32(
3950                         info->attrs[NL80211_ATTR_HIDDEN_SSID]);
3951                 if (params.hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE &&
3952                     params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_LEN &&
3953                     params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_CONTENTS)
3954                         return -EINVAL;
3955         }
3956
3957         params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
3958
3959         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
3960                 params.auth_type = nla_get_u32(
3961                         info->attrs[NL80211_ATTR_AUTH_TYPE]);
3962                 if (!nl80211_valid_auth_type(rdev, params.auth_type,
3963                                              NL80211_CMD_START_AP))
3964                         return -EINVAL;
3965         } else
3966                 params.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
3967
3968         err = nl80211_crypto_settings(rdev, info, &params.crypto,
3969                                       NL80211_MAX_NR_CIPHER_SUITES);
3970         if (err)
3971                 return err;
3972
3973         if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) {
3974                 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER))
3975                         return -EOPNOTSUPP;
3976                 params.inactivity_timeout = nla_get_u16(
3977                         info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]);
3978         }
3979
3980         if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
3981                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3982                         return -EINVAL;
3983                 params.p2p_ctwindow =
3984                         nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
3985                 if (params.p2p_ctwindow > 127)
3986                         return -EINVAL;
3987                 if (params.p2p_ctwindow != 0 &&
3988                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
3989                         return -EINVAL;
3990         }
3991
3992         if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
3993                 u8 tmp;
3994
3995                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3996                         return -EINVAL;
3997                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
3998                 if (tmp > 1)
3999                         return -EINVAL;
4000                 params.p2p_opp_ps = tmp;
4001                 if (params.p2p_opp_ps != 0 &&
4002                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
4003                         return -EINVAL;
4004         }
4005
4006         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
4007                 err = nl80211_parse_chandef(rdev, info, &params.chandef);
4008                 if (err)
4009                         return err;
4010         } else if (wdev->preset_chandef.chan) {
4011                 params.chandef = wdev->preset_chandef;
4012         } else if (!nl80211_get_ap_channel(rdev, &params))
4013                 return -EINVAL;
4014
4015         if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params.chandef,
4016                                            wdev->iftype))
4017                 return -EINVAL;
4018
4019         if (info->attrs[NL80211_ATTR_TX_RATES]) {
4020                 err = nl80211_parse_tx_bitrate_mask(info, &params.beacon_rate);
4021                 if (err)
4022                         return err;
4023
4024                 err = validate_beacon_tx_rate(rdev, params.chandef.chan->band,
4025                                               &params.beacon_rate);
4026                 if (err)
4027                         return err;
4028         }
4029
4030         if (info->attrs[NL80211_ATTR_SMPS_MODE]) {
4031                 params.smps_mode =
4032                         nla_get_u8(info->attrs[NL80211_ATTR_SMPS_MODE]);
4033                 switch (params.smps_mode) {
4034                 case NL80211_SMPS_OFF:
4035                         break;
4036                 case NL80211_SMPS_STATIC:
4037                         if (!(rdev->wiphy.features &
4038                               NL80211_FEATURE_STATIC_SMPS))
4039                                 return -EINVAL;
4040                         break;
4041                 case NL80211_SMPS_DYNAMIC:
4042                         if (!(rdev->wiphy.features &
4043                               NL80211_FEATURE_DYNAMIC_SMPS))
4044                                 return -EINVAL;
4045                         break;
4046                 default:
4047                         return -EINVAL;
4048                 }
4049         } else {
4050                 params.smps_mode = NL80211_SMPS_OFF;
4051         }
4052
4053         params.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
4054         if (params.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ])
4055                 return -EOPNOTSUPP;
4056
4057         if (info->attrs[NL80211_ATTR_ACL_POLICY]) {
4058                 params.acl = parse_acl_data(&rdev->wiphy, info);
4059                 if (IS_ERR(params.acl))
4060                         return PTR_ERR(params.acl);
4061         }
4062
4063         nl80211_calculate_ap_params(&params);
4064
4065         wdev_lock(wdev);
4066         err = rdev_start_ap(rdev, dev, &params);
4067         if (!err) {
4068                 wdev->preset_chandef = params.chandef;
4069                 wdev->beacon_interval = params.beacon_interval;
4070                 wdev->chandef = params.chandef;
4071                 wdev->ssid_len = params.ssid_len;
4072                 memcpy(wdev->ssid, params.ssid, wdev->ssid_len);
4073         }
4074         wdev_unlock(wdev);
4075
4076         kfree(params.acl);
4077
4078         return err;
4079 }
4080
4081 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info)
4082 {
4083         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4084         struct net_device *dev = info->user_ptr[1];
4085         struct wireless_dev *wdev = dev->ieee80211_ptr;
4086         struct cfg80211_beacon_data params;
4087         int err;
4088
4089         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4090             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4091                 return -EOPNOTSUPP;
4092
4093         if (!rdev->ops->change_beacon)
4094                 return -EOPNOTSUPP;
4095
4096         if (!wdev->beacon_interval)
4097                 return -EINVAL;
4098
4099         err = nl80211_parse_beacon(info->attrs, &params);
4100         if (err)
4101                 return err;
4102
4103         wdev_lock(wdev);
4104         err = rdev_change_beacon(rdev, dev, &params);
4105         wdev_unlock(wdev);
4106
4107         return err;
4108 }
4109
4110 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info)
4111 {
4112         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4113         struct net_device *dev = info->user_ptr[1];
4114
4115         return cfg80211_stop_ap(rdev, dev, false);
4116 }
4117
4118 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
4119         [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
4120         [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
4121         [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
4122         [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
4123         [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
4124         [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG },
4125 };
4126
4127 static int parse_station_flags(struct genl_info *info,
4128                                enum nl80211_iftype iftype,
4129                                struct station_parameters *params)
4130 {
4131         struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
4132         struct nlattr *nla;
4133         int flag;
4134
4135         /*
4136          * Try parsing the new attribute first so userspace
4137          * can specify both for older kernels.
4138          */
4139         nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
4140         if (nla) {
4141                 struct nl80211_sta_flag_update *sta_flags;
4142
4143                 sta_flags = nla_data(nla);
4144                 params->sta_flags_mask = sta_flags->mask;
4145                 params->sta_flags_set = sta_flags->set;
4146                 params->sta_flags_set &= params->sta_flags_mask;
4147                 if ((params->sta_flags_mask |
4148                      params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
4149                         return -EINVAL;
4150                 return 0;
4151         }
4152
4153         /* if present, parse the old attribute */
4154
4155         nla = info->attrs[NL80211_ATTR_STA_FLAGS];
4156         if (!nla)
4157                 return 0;
4158
4159         if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX, nla,
4160                              sta_flags_policy, info->extack))
4161                 return -EINVAL;
4162
4163         /*
4164          * Only allow certain flags for interface types so that
4165          * other attributes are silently ignored. Remember that
4166          * this is backward compatibility code with old userspace
4167          * and shouldn't be hit in other cases anyway.
4168          */
4169         switch (iftype) {
4170         case NL80211_IFTYPE_AP:
4171         case NL80211_IFTYPE_AP_VLAN:
4172         case NL80211_IFTYPE_P2P_GO:
4173                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
4174                                          BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
4175                                          BIT(NL80211_STA_FLAG_WME) |
4176                                          BIT(NL80211_STA_FLAG_MFP);
4177                 break;
4178         case NL80211_IFTYPE_P2P_CLIENT:
4179         case NL80211_IFTYPE_STATION:
4180                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
4181                                          BIT(NL80211_STA_FLAG_TDLS_PEER);
4182                 break;
4183         case NL80211_IFTYPE_MESH_POINT:
4184                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4185                                          BIT(NL80211_STA_FLAG_MFP) |
4186                                          BIT(NL80211_STA_FLAG_AUTHORIZED);
4187         default:
4188                 return -EINVAL;
4189         }
4190
4191         for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) {
4192                 if (flags[flag]) {
4193                         params->sta_flags_set |= (1<<flag);
4194
4195                         /* no longer support new API additions in old API */
4196                         if (flag > NL80211_STA_FLAG_MAX_OLD_API)
4197                                 return -EINVAL;
4198                 }
4199         }
4200
4201         return 0;
4202 }
4203
4204 static bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info,
4205                                  int attr)
4206 {
4207         struct nlattr *rate;
4208         u32 bitrate;
4209         u16 bitrate_compat;
4210         enum nl80211_rate_info rate_flg;
4211
4212         rate = nla_nest_start(msg, attr);
4213         if (!rate)
4214                 return false;
4215
4216         /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
4217         bitrate = cfg80211_calculate_bitrate(info);
4218         /* report 16-bit bitrate only if we can */
4219         bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0;
4220         if (bitrate > 0 &&
4221             nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate))
4222                 return false;
4223         if (bitrate_compat > 0 &&
4224             nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat))
4225                 return false;
4226
4227         switch (info->bw) {
4228         case RATE_INFO_BW_5:
4229                 rate_flg = NL80211_RATE_INFO_5_MHZ_WIDTH;
4230                 break;
4231         case RATE_INFO_BW_10:
4232                 rate_flg = NL80211_RATE_INFO_10_MHZ_WIDTH;
4233                 break;
4234         default:
4235                 WARN_ON(1);
4236                 /* fall through */
4237         case RATE_INFO_BW_20:
4238                 rate_flg = 0;
4239                 break;
4240         case RATE_INFO_BW_40:
4241                 rate_flg = NL80211_RATE_INFO_40_MHZ_WIDTH;
4242                 break;
4243         case RATE_INFO_BW_80:
4244                 rate_flg = NL80211_RATE_INFO_80_MHZ_WIDTH;
4245                 break;
4246         case RATE_INFO_BW_160:
4247                 rate_flg = NL80211_RATE_INFO_160_MHZ_WIDTH;
4248                 break;
4249         }
4250
4251         if (rate_flg && nla_put_flag(msg, rate_flg))
4252                 return false;
4253
4254         if (info->flags & RATE_INFO_FLAGS_MCS) {
4255                 if (nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs))
4256                         return false;
4257                 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
4258                     nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
4259                         return false;
4260         } else if (info->flags & RATE_INFO_FLAGS_VHT_MCS) {
4261                 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_MCS, info->mcs))
4262                         return false;
4263                 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_NSS, info->nss))
4264                         return false;
4265                 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
4266                     nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
4267                         return false;
4268         }
4269
4270         nla_nest_end(msg, rate);
4271         return true;
4272 }
4273
4274 static bool nl80211_put_signal(struct sk_buff *msg, u8 mask, s8 *signal,
4275                                int id)
4276 {
4277         void *attr;
4278         int i = 0;
4279
4280         if (!mask)
4281                 return true;
4282
4283         attr = nla_nest_start(msg, id);
4284         if (!attr)
4285                 return false;
4286
4287         for (i = 0; i < IEEE80211_MAX_CHAINS; i++) {
4288                 if (!(mask & BIT(i)))
4289                         continue;
4290
4291                 if (nla_put_u8(msg, i, signal[i]))
4292                         return false;
4293         }
4294
4295         nla_nest_end(msg, attr);
4296
4297         return true;
4298 }
4299
4300 static int nl80211_send_station(struct sk_buff *msg, u32 cmd, u32 portid,
4301                                 u32 seq, int flags,
4302                                 struct cfg80211_registered_device *rdev,
4303                                 struct net_device *dev,
4304                                 const u8 *mac_addr, struct station_info *sinfo)
4305 {
4306         void *hdr;
4307         struct nlattr *sinfoattr, *bss_param;
4308
4309         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
4310         if (!hdr)
4311                 return -1;
4312
4313         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
4314             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
4315             nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation))
4316                 goto nla_put_failure;
4317
4318         sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO);
4319         if (!sinfoattr)
4320                 goto nla_put_failure;
4321
4322 #define PUT_SINFO(attr, memb, type) do {                                \
4323         BUILD_BUG_ON(sizeof(type) == sizeof(u64));                      \
4324         if (sinfo->filled & (1ULL << NL80211_STA_INFO_ ## attr) &&      \
4325             nla_put_ ## type(msg, NL80211_STA_INFO_ ## attr,            \
4326                              sinfo->memb))                              \
4327                 goto nla_put_failure;                                   \
4328         } while (0)
4329 #define PUT_SINFO_U64(attr, memb) do {                                  \
4330         if (sinfo->filled & (1ULL << NL80211_STA_INFO_ ## attr) &&      \
4331             nla_put_u64_64bit(msg, NL80211_STA_INFO_ ## attr,           \
4332                               sinfo->memb, NL80211_STA_INFO_PAD))       \
4333                 goto nla_put_failure;                                   \
4334         } while (0)
4335
4336         PUT_SINFO(CONNECTED_TIME, connected_time, u32);
4337         PUT_SINFO(INACTIVE_TIME, inactive_time, u32);
4338
4339         if (sinfo->filled & (BIT(NL80211_STA_INFO_RX_BYTES) |
4340                              BIT(NL80211_STA_INFO_RX_BYTES64)) &&
4341             nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES,
4342                         (u32)sinfo->rx_bytes))
4343                 goto nla_put_failure;
4344
4345         if (sinfo->filled & (BIT(NL80211_STA_INFO_TX_BYTES) |
4346                              BIT(NL80211_STA_INFO_TX_BYTES64)) &&
4347             nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES,
4348                         (u32)sinfo->tx_bytes))
4349                 goto nla_put_failure;
4350
4351         PUT_SINFO_U64(RX_BYTES64, rx_bytes);
4352         PUT_SINFO_U64(TX_BYTES64, tx_bytes);
4353         PUT_SINFO(LLID, llid, u16);
4354         PUT_SINFO(PLID, plid, u16);
4355         PUT_SINFO(PLINK_STATE, plink_state, u8);
4356         PUT_SINFO_U64(RX_DURATION, rx_duration);
4357
4358         switch (rdev->wiphy.signal_type) {
4359         case CFG80211_SIGNAL_TYPE_MBM:
4360                 PUT_SINFO(SIGNAL, signal, u8);
4361                 PUT_SINFO(SIGNAL_AVG, signal_avg, u8);
4362                 break;
4363         default:
4364                 break;
4365         }
4366         if (sinfo->filled & BIT(NL80211_STA_INFO_CHAIN_SIGNAL)) {
4367                 if (!nl80211_put_signal(msg, sinfo->chains,
4368                                         sinfo->chain_signal,
4369                                         NL80211_STA_INFO_CHAIN_SIGNAL))
4370                         goto nla_put_failure;
4371         }
4372         if (sinfo->filled & BIT(NL80211_STA_INFO_CHAIN_SIGNAL_AVG)) {
4373                 if (!nl80211_put_signal(msg, sinfo->chains,
4374                                         sinfo->chain_signal_avg,
4375                                         NL80211_STA_INFO_CHAIN_SIGNAL_AVG))
4376                         goto nla_put_failure;
4377         }
4378         if (sinfo->filled & BIT(NL80211_STA_INFO_TX_BITRATE)) {
4379                 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
4380                                           NL80211_STA_INFO_TX_BITRATE))
4381                         goto nla_put_failure;
4382         }
4383         if (sinfo->filled & BIT(NL80211_STA_INFO_RX_BITRATE)) {
4384                 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
4385                                           NL80211_STA_INFO_RX_BITRATE))
4386                         goto nla_put_failure;
4387         }
4388
4389         PUT_SINFO(RX_PACKETS, rx_packets, u32);
4390         PUT_SINFO(TX_PACKETS, tx_packets, u32);
4391         PUT_SINFO(TX_RETRIES, tx_retries, u32);
4392         PUT_SINFO(TX_FAILED, tx_failed, u32);
4393         PUT_SINFO(EXPECTED_THROUGHPUT, expected_throughput, u32);
4394         PUT_SINFO(BEACON_LOSS, beacon_loss_count, u32);
4395         PUT_SINFO(LOCAL_PM, local_pm, u32);
4396         PUT_SINFO(PEER_PM, peer_pm, u32);
4397         PUT_SINFO(NONPEER_PM, nonpeer_pm, u32);
4398
4399         if (sinfo->filled & BIT(NL80211_STA_INFO_BSS_PARAM)) {
4400                 bss_param = nla_nest_start(msg, NL80211_STA_INFO_BSS_PARAM);
4401                 if (!bss_param)
4402                         goto nla_put_failure;
4403
4404                 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) &&
4405                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) ||
4406                     ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) &&
4407                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) ||
4408                     ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) &&
4409                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) ||
4410                     nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
4411                                sinfo->bss_param.dtim_period) ||
4412                     nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
4413                                 sinfo->bss_param.beacon_interval))
4414                         goto nla_put_failure;
4415
4416                 nla_nest_end(msg, bss_param);
4417         }
4418         if ((sinfo->filled & BIT(NL80211_STA_INFO_STA_FLAGS)) &&
4419             nla_put(msg, NL80211_STA_INFO_STA_FLAGS,
4420                     sizeof(struct nl80211_sta_flag_update),
4421                     &sinfo->sta_flags))
4422                 goto nla_put_failure;
4423
4424         PUT_SINFO_U64(T_OFFSET, t_offset);
4425         PUT_SINFO_U64(RX_DROP_MISC, rx_dropped_misc);
4426         PUT_SINFO_U64(BEACON_RX, rx_beacon);
4427         PUT_SINFO(BEACON_SIGNAL_AVG, rx_beacon_signal_avg, u8);
4428
4429 #undef PUT_SINFO
4430 #undef PUT_SINFO_U64
4431
4432         if (sinfo->filled & BIT(NL80211_STA_INFO_TID_STATS)) {
4433                 struct nlattr *tidsattr;
4434                 int tid;
4435
4436                 tidsattr = nla_nest_start(msg, NL80211_STA_INFO_TID_STATS);
4437                 if (!tidsattr)
4438                         goto nla_put_failure;
4439
4440                 for (tid = 0; tid < IEEE80211_NUM_TIDS + 1; tid++) {
4441                         struct cfg80211_tid_stats *tidstats;
4442                         struct nlattr *tidattr;
4443
4444                         tidstats = &sinfo->pertid[tid];
4445
4446                         if (!tidstats->filled)
4447                                 continue;
4448
4449                         tidattr = nla_nest_start(msg, tid + 1);
4450                         if (!tidattr)
4451                                 goto nla_put_failure;
4452
4453 #define PUT_TIDVAL_U64(attr, memb) do {                                 \
4454         if (tidstats->filled & BIT(NL80211_TID_STATS_ ## attr) &&       \
4455             nla_put_u64_64bit(msg, NL80211_TID_STATS_ ## attr,          \
4456                               tidstats->memb, NL80211_TID_STATS_PAD))   \
4457                 goto nla_put_failure;                                   \
4458         } while (0)
4459
4460                         PUT_TIDVAL_U64(RX_MSDU, rx_msdu);
4461                         PUT_TIDVAL_U64(TX_MSDU, tx_msdu);
4462                         PUT_TIDVAL_U64(TX_MSDU_RETRIES, tx_msdu_retries);
4463                         PUT_TIDVAL_U64(TX_MSDU_FAILED, tx_msdu_failed);
4464
4465 #undef PUT_TIDVAL_U64
4466                         nla_nest_end(msg, tidattr);
4467                 }
4468
4469                 nla_nest_end(msg, tidsattr);
4470         }
4471
4472         nla_nest_end(msg, sinfoattr);
4473
4474         if (sinfo->assoc_req_ies_len &&
4475             nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
4476                     sinfo->assoc_req_ies))
4477                 goto nla_put_failure;
4478
4479         genlmsg_end(msg, hdr);
4480         return 0;
4481
4482  nla_put_failure:
4483         genlmsg_cancel(msg, hdr);
4484         return -EMSGSIZE;
4485 }
4486
4487 static int nl80211_dump_station(struct sk_buff *skb,
4488                                 struct netlink_callback *cb)
4489 {
4490         struct station_info sinfo;
4491         struct cfg80211_registered_device *rdev;
4492         struct wireless_dev *wdev;
4493         u8 mac_addr[ETH_ALEN];
4494         int sta_idx = cb->args[2];
4495         int err;
4496
4497         rtnl_lock();
4498         err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
4499         if (err)
4500                 goto out_err;
4501
4502         if (!wdev->netdev) {
4503                 err = -EINVAL;
4504                 goto out_err;
4505         }
4506
4507         if (!rdev->ops->dump_station) {
4508                 err = -EOPNOTSUPP;
4509                 goto out_err;
4510         }
4511
4512         while (1) {
4513                 memset(&sinfo, 0, sizeof(sinfo));
4514                 err = rdev_dump_station(rdev, wdev->netdev, sta_idx,
4515                                         mac_addr, &sinfo);
4516                 if (err == -ENOENT)
4517                         break;
4518                 if (err)
4519                         goto out_err;
4520
4521                 if (nl80211_send_station(skb, NL80211_CMD_NEW_STATION,
4522                                 NETLINK_CB(cb->skb).portid,
4523                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
4524                                 rdev, wdev->netdev, mac_addr,
4525                                 &sinfo) < 0)
4526                         goto out;
4527
4528                 sta_idx++;
4529         }
4530
4531  out:
4532         cb->args[2] = sta_idx;
4533         err = skb->len;
4534  out_err:
4535         rtnl_unlock();
4536
4537         return err;
4538 }
4539
4540 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
4541 {
4542         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4543         struct net_device *dev = info->user_ptr[1];
4544         struct station_info sinfo;
4545         struct sk_buff *msg;
4546         u8 *mac_addr = NULL;
4547         int err;
4548
4549         memset(&sinfo, 0, sizeof(sinfo));
4550
4551         if (!info->attrs[NL80211_ATTR_MAC])
4552                 return -EINVAL;
4553
4554         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4555
4556         if (!rdev->ops->get_station)
4557                 return -EOPNOTSUPP;
4558
4559         err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
4560         if (err)
4561                 return err;
4562
4563         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4564         if (!msg)
4565                 return -ENOMEM;
4566
4567         if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION,
4568                                  info->snd_portid, info->snd_seq, 0,
4569                                  rdev, dev, mac_addr, &sinfo) < 0) {
4570                 nlmsg_free(msg);
4571                 return -ENOBUFS;
4572         }
4573
4574         return genlmsg_reply(msg, info);
4575 }
4576
4577 int cfg80211_check_station_change(struct wiphy *wiphy,
4578                                   struct station_parameters *params,
4579                                   enum cfg80211_station_type statype)
4580 {
4581         if (params->listen_interval != -1 &&
4582             statype != CFG80211_STA_AP_CLIENT_UNASSOC)
4583                 return -EINVAL;
4584
4585         if (params->support_p2p_ps != -1 &&
4586             statype != CFG80211_STA_AP_CLIENT_UNASSOC)
4587                 return -EINVAL;
4588
4589         if (params->aid &&
4590             !(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) &&
4591             statype != CFG80211_STA_AP_CLIENT_UNASSOC)
4592                 return -EINVAL;
4593
4594         /* When you run into this, adjust the code below for the new flag */
4595         BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
4596
4597         switch (statype) {
4598         case CFG80211_STA_MESH_PEER_KERNEL:
4599         case CFG80211_STA_MESH_PEER_USER:
4600                 /*
4601                  * No ignoring the TDLS flag here -- the userspace mesh
4602                  * code doesn't have the bug of including TDLS in the
4603                  * mask everywhere.
4604                  */
4605                 if (params->sta_flags_mask &
4606                                 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4607                                   BIT(NL80211_STA_FLAG_MFP) |
4608                                   BIT(NL80211_STA_FLAG_AUTHORIZED)))
4609                         return -EINVAL;
4610                 break;
4611         case CFG80211_STA_TDLS_PEER_SETUP:
4612         case CFG80211_STA_TDLS_PEER_ACTIVE:
4613                 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
4614                         return -EINVAL;
4615                 /* ignore since it can't change */
4616                 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
4617                 break;
4618         default:
4619                 /* disallow mesh-specific things */
4620                 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
4621                         return -EINVAL;
4622                 if (params->local_pm)
4623                         return -EINVAL;
4624                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
4625                         return -EINVAL;
4626         }
4627
4628         if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
4629             statype != CFG80211_STA_TDLS_PEER_ACTIVE) {
4630                 /* TDLS can't be set, ... */
4631                 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
4632                         return -EINVAL;
4633                 /*
4634                  * ... but don't bother the driver with it. This works around
4635                  * a hostapd/wpa_supplicant issue -- it always includes the
4636                  * TLDS_PEER flag in the mask even for AP mode.
4637                  */
4638                 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
4639         }
4640
4641         if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
4642             statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
4643                 /* reject other things that can't change */
4644                 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD)
4645                         return -EINVAL;
4646                 if (params->sta_modify_mask & STATION_PARAM_APPLY_CAPABILITY)
4647                         return -EINVAL;
4648                 if (params->supported_rates)
4649                         return -EINVAL;
4650                 if (params->ext_capab || params->ht_capa || params->vht_capa)
4651                         return -EINVAL;
4652         }
4653
4654         if (statype != CFG80211_STA_AP_CLIENT &&
4655             statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
4656                 if (params->vlan)
4657                         return -EINVAL;
4658         }
4659
4660         switch (statype) {
4661         case CFG80211_STA_AP_MLME_CLIENT:
4662                 /* Use this only for authorizing/unauthorizing a station */
4663                 if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)))
4664                         return -EOPNOTSUPP;
4665                 break;
4666         case CFG80211_STA_AP_CLIENT:
4667         case CFG80211_STA_AP_CLIENT_UNASSOC:
4668                 /* accept only the listed bits */
4669                 if (params->sta_flags_mask &
4670                                 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
4671                                   BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4672                                   BIT(NL80211_STA_FLAG_ASSOCIATED) |
4673                                   BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
4674                                   BIT(NL80211_STA_FLAG_WME) |
4675                                   BIT(NL80211_STA_FLAG_MFP)))
4676                         return -EINVAL;
4677
4678                 /* but authenticated/associated only if driver handles it */
4679                 if (!(wiphy->features & NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
4680                     params->sta_flags_mask &
4681                                 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4682                                  BIT(NL80211_STA_FLAG_ASSOCIATED)))
4683                         return -EINVAL;
4684                 break;
4685         case CFG80211_STA_IBSS:
4686         case CFG80211_STA_AP_STA:
4687                 /* reject any changes other than AUTHORIZED */
4688                 if (params->sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
4689                         return -EINVAL;
4690                 break;
4691         case CFG80211_STA_TDLS_PEER_SETUP:
4692                 /* reject any changes other than AUTHORIZED or WME */
4693                 if (params->sta_flags_mask & ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
4694                                                BIT(NL80211_STA_FLAG_WME)))
4695                         return -EINVAL;
4696                 /* force (at least) rates when authorizing */
4697                 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED) &&
4698                     !params->supported_rates)
4699                         return -EINVAL;
4700                 break;
4701         case CFG80211_STA_TDLS_PEER_ACTIVE:
4702                 /* reject any changes */
4703                 return -EINVAL;
4704         case CFG80211_STA_MESH_PEER_KERNEL:
4705                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
4706                         return -EINVAL;
4707                 break;
4708         case CFG80211_STA_MESH_PEER_USER:
4709                 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION &&
4710                     params->plink_action != NL80211_PLINK_ACTION_BLOCK)
4711                         return -EINVAL;
4712                 break;
4713         }
4714
4715         /*
4716          * Older kernel versions ignored this attribute entirely, so don't
4717          * reject attempts to update it but mark it as unused instead so the
4718          * driver won't look at the data.
4719          */
4720         if (statype != CFG80211_STA_AP_CLIENT_UNASSOC &&
4721             statype != CFG80211_STA_TDLS_PEER_SETUP)
4722                 params->opmode_notif_used = false;
4723
4724         return 0;
4725 }
4726 EXPORT_SYMBOL(cfg80211_check_station_change);
4727
4728 /*
4729  * Get vlan interface making sure it is running and on the right wiphy.
4730  */
4731 static struct net_device *get_vlan(struct genl_info *info,
4732                                    struct cfg80211_registered_device *rdev)
4733 {
4734         struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
4735         struct net_device *v;
4736         int ret;
4737
4738         if (!vlanattr)
4739                 return NULL;
4740
4741         v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr));
4742         if (!v)
4743                 return ERR_PTR(-ENODEV);
4744
4745         if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) {
4746                 ret = -EINVAL;
4747                 goto error;
4748         }
4749
4750         if (v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
4751             v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4752             v->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
4753                 ret = -EINVAL;
4754                 goto error;
4755         }
4756
4757         if (!netif_running(v)) {
4758                 ret = -ENETDOWN;
4759                 goto error;
4760         }
4761
4762         return v;
4763  error:
4764         dev_put(v);
4765         return ERR_PTR(ret);
4766 }
4767
4768 static const struct nla_policy
4769 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] = {
4770         [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
4771         [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
4772 };
4773
4774 static int nl80211_parse_sta_wme(struct genl_info *info,
4775                                  struct station_parameters *params)
4776 {
4777         struct nlattr *tb[NL80211_STA_WME_MAX + 1];
4778         struct nlattr *nla;
4779         int err;
4780
4781         /* parse WME attributes if present */
4782         if (!info->attrs[NL80211_ATTR_STA_WME])
4783                 return 0;
4784
4785         nla = info->attrs[NL80211_ATTR_STA_WME];
4786         err = nla_parse_nested(tb, NL80211_STA_WME_MAX, nla,
4787                                nl80211_sta_wme_policy, info->extack);
4788         if (err)
4789                 return err;
4790
4791         if (tb[NL80211_STA_WME_UAPSD_QUEUES])
4792                 params->uapsd_queues = nla_get_u8(
4793                         tb[NL80211_STA_WME_UAPSD_QUEUES]);
4794         if (params->uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
4795                 return -EINVAL;
4796
4797         if (tb[NL80211_STA_WME_MAX_SP])
4798                 params->max_sp = nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
4799
4800         if (params->max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
4801                 return -EINVAL;
4802
4803         params->sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
4804
4805         return 0;
4806 }
4807
4808 static int nl80211_parse_sta_channel_info(struct genl_info *info,
4809                                       struct station_parameters *params)
4810 {
4811         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]) {
4812                 params->supported_channels =
4813                      nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
4814                 params->supported_channels_len =
4815                      nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
4816                 /*
4817                  * Need to include at least one (first channel, number of
4818                  * channels) tuple for each subband, and must have proper
4819                  * tuples for the rest of the data as well.
4820                  */
4821                 if (params->supported_channels_len < 2)
4822                         return -EINVAL;
4823                 if (params->supported_channels_len % 2)
4824                         return -EINVAL;
4825         }
4826
4827         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]) {
4828                 params->supported_oper_classes =
4829                  nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
4830                 params->supported_oper_classes_len =
4831                   nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
4832                 /*
4833                  * The value of the Length field of the Supported Operating
4834                  * Classes element is between 2 and 253.
4835                  */
4836                 if (params->supported_oper_classes_len < 2 ||
4837                     params->supported_oper_classes_len > 253)
4838                         return -EINVAL;
4839         }
4840         return 0;
4841 }
4842
4843 static int nl80211_set_station_tdls(struct genl_info *info,
4844                                     struct station_parameters *params)
4845 {
4846         int err;
4847         /* Dummy STA entry gets updated once the peer capabilities are known */
4848         if (info->attrs[NL80211_ATTR_PEER_AID])
4849                 params->aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
4850         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
4851                 params->ht_capa =
4852                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
4853         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
4854                 params->vht_capa =
4855                         nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
4856
4857         err = nl80211_parse_sta_channel_info(info, params);
4858         if (err)
4859                 return err;
4860
4861         return nl80211_parse_sta_wme(info, params);
4862 }
4863
4864 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
4865 {
4866         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4867         struct net_device *dev = info->user_ptr[1];
4868         struct station_parameters params;
4869         u8 *mac_addr;
4870         int err;
4871
4872         memset(&params, 0, sizeof(params));
4873
4874         if (!rdev->ops->change_station)
4875                 return -EOPNOTSUPP;
4876
4877         /*
4878          * AID and listen_interval properties can be set only for unassociated
4879          * station. Include these parameters here and will check them in
4880          * cfg80211_check_station_change().
4881          */
4882         if (info->attrs[NL80211_ATTR_STA_AID])
4883                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
4884
4885         if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
4886                 params.listen_interval =
4887                      nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
4888         else
4889                 params.listen_interval = -1;
4890
4891         if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]) {
4892                 u8 tmp;
4893
4894                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
4895                 if (tmp >= NUM_NL80211_P2P_PS_STATUS)
4896                         return -EINVAL;
4897
4898                 params.support_p2p_ps = tmp;
4899         } else {
4900                 params.support_p2p_ps = -1;
4901         }
4902
4903         if (!info->attrs[NL80211_ATTR_MAC])
4904                 return -EINVAL;
4905
4906         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4907
4908         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
4909                 params.supported_rates =
4910                         nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4911                 params.supported_rates_len =
4912                         nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4913         }
4914
4915         if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
4916                 params.capability =
4917                         nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
4918                 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
4919         }
4920
4921         if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
4922                 params.ext_capab =
4923                         nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4924                 params.ext_capab_len =
4925                         nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4926         }
4927
4928         if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
4929                 return -EINVAL;
4930
4931         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
4932                 params.plink_action =
4933                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
4934                 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
4935                         return -EINVAL;
4936         }
4937
4938         if (info->attrs[NL80211_ATTR_STA_PLINK_STATE]) {
4939                 params.plink_state =
4940                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
4941                 if (params.plink_state >= NUM_NL80211_PLINK_STATES)
4942                         return -EINVAL;
4943                 if (info->attrs[NL80211_ATTR_MESH_PEER_AID]) {
4944                         params.peer_aid = nla_get_u16(
4945                                 info->attrs[NL80211_ATTR_MESH_PEER_AID]);
4946                         if (params.peer_aid > IEEE80211_MAX_AID)
4947                                 return -EINVAL;
4948                 }
4949                 params.sta_modify_mask |= STATION_PARAM_APPLY_PLINK_STATE;
4950         }
4951
4952         if (info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]) {
4953                 enum nl80211_mesh_power_mode pm = nla_get_u32(
4954                         info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]);
4955
4956                 if (pm <= NL80211_MESH_POWER_UNKNOWN ||
4957                     pm > NL80211_MESH_POWER_MAX)
4958                         return -EINVAL;
4959
4960                 params.local_pm = pm;
4961         }
4962
4963         if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
4964                 params.opmode_notif_used = true;
4965                 params.opmode_notif =
4966                         nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
4967         }
4968
4969         /* Include parameters for TDLS peer (will check later) */
4970         err = nl80211_set_station_tdls(info, &params);
4971         if (err)
4972                 return err;
4973
4974         params.vlan = get_vlan(info, rdev);
4975         if (IS_ERR(params.vlan))
4976                 return PTR_ERR(params.vlan);
4977
4978         switch (dev->ieee80211_ptr->iftype) {
4979         case NL80211_IFTYPE_AP:
4980         case NL80211_IFTYPE_AP_VLAN:
4981         case NL80211_IFTYPE_P2P_GO:
4982         case NL80211_IFTYPE_P2P_CLIENT:
4983         case NL80211_IFTYPE_STATION:
4984         case NL80211_IFTYPE_ADHOC:
4985         case NL80211_IFTYPE_MESH_POINT:
4986                 break;
4987         default:
4988                 err = -EOPNOTSUPP;
4989                 goto out_put_vlan;
4990         }
4991
4992         /* driver will call cfg80211_check_station_change() */
4993         err = rdev_change_station(rdev, dev, mac_addr, &params);
4994
4995  out_put_vlan:
4996         if (params.vlan)
4997                 dev_put(params.vlan);
4998
4999         return err;
5000 }
5001
5002 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
5003 {
5004         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5005         int err;
5006         struct net_device *dev = info->user_ptr[1];
5007         struct station_parameters params;
5008         u8 *mac_addr = NULL;
5009         u32 auth_assoc = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
5010                          BIT(NL80211_STA_FLAG_ASSOCIATED);
5011
5012         memset(&params, 0, sizeof(params));
5013
5014         if (!rdev->ops->add_station)
5015                 return -EOPNOTSUPP;
5016
5017         if (!info->attrs[NL80211_ATTR_MAC])
5018                 return -EINVAL;
5019
5020         if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
5021                 return -EINVAL;
5022
5023         if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
5024                 return -EINVAL;
5025
5026         if (!info->attrs[NL80211_ATTR_STA_AID] &&
5027             !info->attrs[NL80211_ATTR_PEER_AID])
5028                 return -EINVAL;
5029
5030         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
5031         params.supported_rates =
5032                 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
5033         params.supported_rates_len =
5034                 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
5035         params.listen_interval =
5036                 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
5037
5038         if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]) {
5039                 u8 tmp;
5040
5041                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
5042                 if (tmp >= NUM_NL80211_P2P_PS_STATUS)
5043                         return -EINVAL;
5044
5045                 params.support_p2p_ps = tmp;
5046         } else {
5047                 /*
5048                  * if not specified, assume it's supported for P2P GO interface,
5049                  * and is NOT supported for AP interface
5050                  */
5051                 params.support_p2p_ps =
5052                         dev->ieee80211_ptr->iftype == NL80211_IFTYPE_P2P_GO;
5053         }
5054
5055         if (info->attrs[NL80211_ATTR_PEER_AID])
5056                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
5057         else
5058                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
5059         if (!params.aid || params.aid > IEEE80211_MAX_AID)
5060                 return -EINVAL;
5061
5062         if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
5063                 params.capability =
5064                         nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
5065                 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
5066         }
5067
5068         if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
5069                 params.ext_capab =
5070                         nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
5071                 params.ext_capab_len =
5072                         nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
5073         }
5074
5075         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
5076                 params.ht_capa =
5077                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
5078
5079         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
5080                 params.vht_capa =
5081                         nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
5082
5083         if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
5084                 params.opmode_notif_used = true;
5085                 params.opmode_notif =
5086                         nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
5087         }
5088
5089         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
5090                 params.plink_action =
5091                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
5092                 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
5093                         return -EINVAL;
5094         }
5095
5096         err = nl80211_parse_sta_channel_info(info, &params);
5097         if (err)
5098                 return err;
5099
5100         err = nl80211_parse_sta_wme(info, &params);
5101         if (err)
5102                 return err;
5103
5104         if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
5105                 return -EINVAL;
5106
5107         /* HT/VHT requires QoS, but if we don't have that just ignore HT/VHT
5108          * as userspace might just pass through the capabilities from the IEs
5109          * directly, rather than enforcing this restriction and returning an
5110          * error in this case.
5111          */
5112         if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME))) {
5113                 params.ht_capa = NULL;
5114                 params.vht_capa = NULL;
5115         }
5116
5117         /* When you run into this, adjust the code below for the new flag */
5118         BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
5119
5120         switch (dev->ieee80211_ptr->iftype) {
5121         case NL80211_IFTYPE_AP:
5122         case NL80211_IFTYPE_AP_VLAN:
5123         case NL80211_IFTYPE_P2P_GO:
5124                 /* ignore WME attributes if iface/sta is not capable */
5125                 if (!(rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) ||
5126                     !(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)))
5127                         params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
5128
5129                 /* TDLS peers cannot be added */
5130                 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
5131                     info->attrs[NL80211_ATTR_PEER_AID])
5132                         return -EINVAL;
5133                 /* but don't bother the driver with it */
5134                 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
5135
5136                 /* allow authenticated/associated only if driver handles it */
5137                 if (!(rdev->wiphy.features &
5138                                 NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
5139                     params.sta_flags_mask & auth_assoc)
5140                         return -EINVAL;
5141
5142                 /* Older userspace, or userspace wanting to be compatible with
5143                  * !NL80211_FEATURE_FULL_AP_CLIENT_STATE, will not set the auth
5144                  * and assoc flags in the mask, but assumes the station will be
5145                  * added as associated anyway since this was the required driver
5146                  * behaviour before NL80211_FEATURE_FULL_AP_CLIENT_STATE was
5147                  * introduced.
5148                  * In order to not bother drivers with this quirk in the API
5149                  * set the flags in both the mask and set for new stations in
5150                  * this case.
5151                  */
5152                 if (!(params.sta_flags_mask & auth_assoc)) {
5153                         params.sta_flags_mask |= auth_assoc;
5154                         params.sta_flags_set |= auth_assoc;
5155                 }
5156
5157                 /* must be last in here for error handling */
5158                 params.vlan = get_vlan(info, rdev);
5159                 if (IS_ERR(params.vlan))
5160                         return PTR_ERR(params.vlan);
5161                 break;
5162         case NL80211_IFTYPE_MESH_POINT:
5163                 /* ignore uAPSD data */
5164                 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
5165
5166                 /* associated is disallowed */
5167                 if (params.sta_flags_mask & BIT(NL80211_STA_FLAG_ASSOCIATED))
5168                         return -EINVAL;
5169                 /* TDLS peers cannot be added */
5170                 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
5171                     info->attrs[NL80211_ATTR_PEER_AID])
5172                         return -EINVAL;
5173                 break;
5174         case NL80211_IFTYPE_STATION:
5175         case NL80211_IFTYPE_P2P_CLIENT:
5176                 /* ignore uAPSD data */
5177                 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
5178
5179                 /* these are disallowed */
5180                 if (params.sta_flags_mask &
5181                                 (BIT(NL80211_STA_FLAG_ASSOCIATED) |
5182                                  BIT(NL80211_STA_FLAG_AUTHENTICATED)))
5183                         return -EINVAL;
5184                 /* Only TDLS peers can be added */
5185                 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
5186                         return -EINVAL;
5187                 /* Can only add if TDLS ... */
5188                 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS))
5189                         return -EOPNOTSUPP;
5190                 /* ... with external setup is supported */
5191                 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP))
5192                         return -EOPNOTSUPP;
5193                 /*
5194                  * Older wpa_supplicant versions always mark the TDLS peer
5195                  * as authorized, but it shouldn't yet be.
5196                  */
5197                 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_AUTHORIZED);
5198                 break;
5199         default:
5200                 return -EOPNOTSUPP;
5201         }
5202
5203         /* be aware of params.vlan when changing code here */
5204
5205         err = rdev_add_station(rdev, dev, mac_addr, &params);
5206
5207         if (params.vlan)
5208                 dev_put(params.vlan);
5209         return err;
5210 }
5211
5212 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
5213 {
5214         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5215         struct net_device *dev = info->user_ptr[1];
5216         struct station_del_parameters params;
5217
5218         memset(&params, 0, sizeof(params));
5219
5220         if (info->attrs[NL80211_ATTR_MAC])
5221                 params.mac = nla_data(info->attrs[NL80211_ATTR_MAC]);
5222
5223         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5224             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
5225             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
5226             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5227                 return -EINVAL;
5228
5229         if (!rdev->ops->del_station)
5230                 return -EOPNOTSUPP;
5231
5232         if (info->attrs[NL80211_ATTR_MGMT_SUBTYPE]) {
5233                 params.subtype =
5234                         nla_get_u8(info->attrs[NL80211_ATTR_MGMT_SUBTYPE]);
5235                 if (params.subtype != IEEE80211_STYPE_DISASSOC >> 4 &&
5236                     params.subtype != IEEE80211_STYPE_DEAUTH >> 4)
5237                         return -EINVAL;
5238         } else {
5239                 /* Default to Deauthentication frame */
5240                 params.subtype = IEEE80211_STYPE_DEAUTH >> 4;
5241         }
5242
5243         if (info->attrs[NL80211_ATTR_REASON_CODE]) {
5244                 params.reason_code =
5245                         nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
5246                 if (params.reason_code == 0)
5247                         return -EINVAL; /* 0 is reserved */
5248         } else {
5249                 /* Default to reason code 2 */
5250                 params.reason_code = WLAN_REASON_PREV_AUTH_NOT_VALID;
5251         }
5252
5253         return rdev_del_station(rdev, dev, &params);
5254 }
5255
5256 static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq,
5257                                 int flags, struct net_device *dev,
5258                                 u8 *dst, u8 *next_hop,
5259                                 struct mpath_info *pinfo)
5260 {
5261         void *hdr;
5262         struct nlattr *pinfoattr;
5263
5264         hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_MPATH);
5265         if (!hdr)
5266                 return -1;
5267
5268         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
5269             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
5270             nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) ||
5271             nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation))
5272                 goto nla_put_failure;
5273
5274         pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO);
5275         if (!pinfoattr)
5276                 goto nla_put_failure;
5277         if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) &&
5278             nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
5279                         pinfo->frame_qlen))
5280                 goto nla_put_failure;
5281         if (((pinfo->filled & MPATH_INFO_SN) &&
5282              nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) ||
5283             ((pinfo->filled & MPATH_INFO_METRIC) &&
5284              nla_put_u32(msg, NL80211_MPATH_INFO_METRIC,
5285                          pinfo->metric)) ||
5286             ((pinfo->filled & MPATH_INFO_EXPTIME) &&
5287              nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME,
5288                          pinfo->exptime)) ||
5289             ((pinfo->filled & MPATH_INFO_FLAGS) &&
5290              nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS,
5291                         pinfo->flags)) ||
5292             ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) &&
5293              nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
5294                          pinfo->discovery_timeout)) ||
5295             ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) &&
5296              nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
5297                         pinfo->discovery_retries)))
5298                 goto nla_put_failure;
5299
5300         nla_nest_end(msg, pinfoattr);
5301
5302         genlmsg_end(msg, hdr);
5303         return 0;
5304
5305  nla_put_failure:
5306         genlmsg_cancel(msg, hdr);
5307         return -EMSGSIZE;
5308 }
5309
5310 static int nl80211_dump_mpath(struct sk_buff *skb,
5311                               struct netlink_callback *cb)
5312 {
5313         struct mpath_info pinfo;
5314         struct cfg80211_registered_device *rdev;
5315         struct wireless_dev *wdev;
5316         u8 dst[ETH_ALEN];
5317         u8 next_hop[ETH_ALEN];
5318         int path_idx = cb->args[2];
5319         int err;
5320
5321         rtnl_lock();
5322         err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
5323         if (err)
5324                 goto out_err;
5325
5326         if (!rdev->ops->dump_mpath) {
5327                 err = -EOPNOTSUPP;
5328                 goto out_err;
5329         }
5330
5331         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
5332                 err = -EOPNOTSUPP;
5333                 goto out_err;
5334         }
5335
5336         while (1) {
5337                 err = rdev_dump_mpath(rdev, wdev->netdev, path_idx, dst,
5338                                       next_hop, &pinfo);
5339                 if (err == -ENOENT)
5340                         break;
5341                 if (err)
5342                         goto out_err;
5343
5344                 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
5345                                        cb->nlh->nlmsg_seq, NLM_F_MULTI,
5346                                        wdev->netdev, dst, next_hop,
5347                                        &pinfo) < 0)
5348                         goto out;
5349
5350                 path_idx++;
5351         }
5352
5353  out:
5354         cb->args[2] = path_idx;
5355         err = skb->len;
5356  out_err:
5357         rtnl_unlock();
5358         return err;
5359 }
5360
5361 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
5362 {
5363         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5364         int err;
5365         struct net_device *dev = info->user_ptr[1];
5366         struct mpath_info pinfo;
5367         struct sk_buff *msg;
5368         u8 *dst = NULL;
5369         u8 next_hop[ETH_ALEN];
5370
5371         memset(&pinfo, 0, sizeof(pinfo));
5372
5373         if (!info->attrs[NL80211_ATTR_MAC])
5374                 return -EINVAL;
5375
5376         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
5377
5378         if (!rdev->ops->get_mpath)
5379                 return -EOPNOTSUPP;
5380
5381         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
5382                 return -EOPNOTSUPP;
5383
5384         err = rdev_get_mpath(rdev, dev, dst, next_hop, &pinfo);
5385         if (err)
5386                 return err;
5387
5388         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5389         if (!msg)
5390                 return -ENOMEM;
5391
5392         if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
5393                                  dev, dst, next_hop, &pinfo) < 0) {
5394                 nlmsg_free(msg);
5395                 return -ENOBUFS;
5396         }
5397
5398         return genlmsg_reply(msg, info);
5399 }
5400
5401 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
5402 {
5403         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5404         struct net_device *dev = info->user_ptr[1];
5405         u8 *dst = NULL;
5406         u8 *next_hop = NULL;
5407
5408         if (!info->attrs[NL80211_ATTR_MAC])
5409                 return -EINVAL;
5410
5411         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
5412                 return -EINVAL;
5413
5414         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
5415         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
5416
5417         if (!rdev->ops->change_mpath)
5418                 return -EOPNOTSUPP;
5419
5420         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
5421                 return -EOPNOTSUPP;
5422
5423         return rdev_change_mpath(rdev, dev, dst, next_hop);
5424 }
5425
5426 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
5427 {
5428         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5429         struct net_device *dev = info->user_ptr[1];
5430         u8 *dst = NULL;
5431         u8 *next_hop = NULL;
5432
5433         if (!info->attrs[NL80211_ATTR_MAC])
5434                 return -EINVAL;
5435
5436         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
5437                 return -EINVAL;
5438
5439         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
5440         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
5441
5442         if (!rdev->ops->add_mpath)
5443                 return -EOPNOTSUPP;
5444
5445         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
5446                 return -EOPNOTSUPP;
5447
5448         return rdev_add_mpath(rdev, dev, dst, next_hop);
5449 }
5450
5451 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
5452 {
5453         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5454         struct net_device *dev = info->user_ptr[1];
5455         u8 *dst = NULL;
5456
5457         if (info->attrs[NL80211_ATTR_MAC])
5458                 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
5459
5460         if (!rdev->ops->del_mpath)
5461                 return -EOPNOTSUPP;
5462
5463         return rdev_del_mpath(rdev, dev, dst);
5464 }
5465
5466 static int nl80211_get_mpp(struct sk_buff *skb, struct genl_info *info)
5467 {
5468         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5469         int err;
5470         struct net_device *dev = info->user_ptr[1];
5471         struct mpath_info pinfo;
5472         struct sk_buff *msg;
5473         u8 *dst = NULL;
5474         u8 mpp[ETH_ALEN];
5475
5476         memset(&pinfo, 0, sizeof(pinfo));
5477
5478         if (!info->attrs[NL80211_ATTR_MAC])
5479                 return -EINVAL;
5480
5481         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
5482
5483         if (!rdev->ops->get_mpp)
5484                 return -EOPNOTSUPP;
5485
5486         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
5487                 return -EOPNOTSUPP;
5488
5489         err = rdev_get_mpp(rdev, dev, dst, mpp, &pinfo);
5490         if (err)
5491                 return err;
5492
5493         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5494         if (!msg)
5495                 return -ENOMEM;
5496
5497         if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
5498                                dev, dst, mpp, &pinfo) < 0) {
5499                 nlmsg_free(msg);
5500                 return -ENOBUFS;
5501         }
5502
5503         return genlmsg_reply(msg, info);
5504 }
5505
5506 static int nl80211_dump_mpp(struct sk_buff *skb,
5507                             struct netlink_callback *cb)
5508 {
5509         struct mpath_info pinfo;
5510         struct cfg80211_registered_device *rdev;
5511         struct wireless_dev *wdev;
5512         u8 dst[ETH_ALEN];
5513         u8 mpp[ETH_ALEN];
5514         int path_idx = cb->args[2];
5515         int err;
5516
5517         rtnl_lock();
5518         err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
5519         if (err)
5520                 goto out_err;
5521
5522         if (!rdev->ops->dump_mpp) {
5523                 err = -EOPNOTSUPP;
5524                 goto out_err;
5525         }
5526
5527         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
5528                 err = -EOPNOTSUPP;
5529                 goto out_err;
5530         }
5531
5532         while (1) {
5533                 err = rdev_dump_mpp(rdev, wdev->netdev, path_idx, dst,
5534                                     mpp, &pinfo);
5535                 if (err == -ENOENT)
5536                         break;
5537                 if (err)
5538                         goto out_err;
5539
5540                 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
5541                                        cb->nlh->nlmsg_seq, NLM_F_MULTI,
5542                                        wdev->netdev, dst, mpp,
5543                                        &pinfo) < 0)
5544                         goto out;
5545
5546                 path_idx++;
5547         }
5548
5549  out:
5550         cb->args[2] = path_idx;
5551         err = skb->len;
5552  out_err:
5553         rtnl_unlock();
5554         return err;
5555 }
5556
5557 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
5558 {
5559         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5560         struct net_device *dev = info->user_ptr[1];
5561         struct wireless_dev *wdev = dev->ieee80211_ptr;
5562         struct bss_parameters params;
5563         int err;
5564
5565         memset(&params, 0, sizeof(params));
5566         /* default to not changing parameters */
5567         params.use_cts_prot = -1;
5568         params.use_short_preamble = -1;
5569         params.use_short_slot_time = -1;
5570         params.ap_isolate = -1;
5571         params.ht_opmode = -1;
5572         params.p2p_ctwindow = -1;
5573         params.p2p_opp_ps = -1;
5574
5575         if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
5576                 params.use_cts_prot =
5577                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
5578         if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
5579                 params.use_short_preamble =
5580                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
5581         if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
5582                 params.use_short_slot_time =
5583                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
5584         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
5585                 params.basic_rates =
5586                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
5587                 params.basic_rates_len =
5588                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
5589         }
5590         if (info->attrs[NL80211_ATTR_AP_ISOLATE])
5591                 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
5592         if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
5593                 params.ht_opmode =
5594                         nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
5595
5596         if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
5597                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5598                         return -EINVAL;
5599                 params.p2p_ctwindow =
5600                         nla_get_s8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
5601                 if (params.p2p_ctwindow < 0)
5602                         return -EINVAL;
5603                 if (params.p2p_ctwindow != 0 &&
5604                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
5605                         return -EINVAL;
5606         }
5607
5608         if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
5609                 u8 tmp;
5610
5611                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5612                         return -EINVAL;
5613                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
5614                 if (tmp > 1)
5615                         return -EINVAL;
5616                 params.p2p_opp_ps = tmp;
5617                 if (params.p2p_opp_ps &&
5618                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
5619                         return -EINVAL;
5620         }
5621
5622         if (!rdev->ops->change_bss)
5623                 return -EOPNOTSUPP;
5624
5625         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5626             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5627                 return -EOPNOTSUPP;
5628
5629         wdev_lock(wdev);
5630         err = rdev_change_bss(rdev, dev, &params);
5631         wdev_unlock(wdev);
5632
5633         return err;
5634 }
5635
5636 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
5637 {
5638         char *data = NULL;
5639         bool is_indoor;
5640         enum nl80211_user_reg_hint_type user_reg_hint_type;
5641         u32 owner_nlportid;
5642
5643         /*
5644          * You should only get this when cfg80211 hasn't yet initialized
5645          * completely when built-in to the kernel right between the time
5646          * window between nl80211_init() and regulatory_init(), if that is
5647          * even possible.
5648          */
5649         if (unlikely(!rcu_access_pointer(cfg80211_regdomain)))
5650                 return -EINPROGRESS;
5651
5652         if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE])
5653                 user_reg_hint_type =
5654                   nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]);
5655         else
5656                 user_reg_hint_type = NL80211_USER_REG_HINT_USER;
5657
5658         switch (user_reg_hint_type) {
5659         case NL80211_USER_REG_HINT_USER:
5660         case NL80211_USER_REG_HINT_CELL_BASE:
5661                 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
5662                         return -EINVAL;
5663
5664                 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
5665                 return regulatory_hint_user(data, user_reg_hint_type);
5666         case NL80211_USER_REG_HINT_INDOOR:
5667                 if (info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
5668                         owner_nlportid = info->snd_portid;
5669                         is_indoor = !!info->attrs[NL80211_ATTR_REG_INDOOR];
5670                 } else {
5671                         owner_nlportid = 0;
5672                         is_indoor = true;
5673                 }
5674
5675                 return regulatory_hint_indoor(is_indoor, owner_nlportid);
5676         default:
5677                 return -EINVAL;
5678         }
5679 }
5680
5681 static int nl80211_reload_regdb(struct sk_buff *skb, struct genl_info *info)
5682 {
5683         return reg_reload_regdb();
5684 }
5685
5686 static int nl80211_get_mesh_config(struct sk_buff *skb,
5687                                    struct genl_info *info)
5688 {
5689         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5690         struct net_device *dev = info->user_ptr[1];
5691         struct wireless_dev *wdev = dev->ieee80211_ptr;
5692         struct mesh_config cur_params;
5693         int err = 0;
5694         void *hdr;
5695         struct nlattr *pinfoattr;
5696         struct sk_buff *msg;
5697
5698         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
5699                 return -EOPNOTSUPP;
5700
5701         if (!rdev->ops->get_mesh_config)
5702                 return -EOPNOTSUPP;
5703
5704         wdev_lock(wdev);
5705         /* If not connected, get default parameters */
5706         if (!wdev->mesh_id_len)
5707                 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
5708         else
5709                 err = rdev_get_mesh_config(rdev, dev, &cur_params);
5710         wdev_unlock(wdev);
5711
5712         if (err)
5713                 return err;
5714
5715         /* Draw up a netlink message to send back */
5716         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5717         if (!msg)
5718                 return -ENOMEM;
5719         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
5720                              NL80211_CMD_GET_MESH_CONFIG);
5721         if (!hdr)
5722                 goto out;
5723         pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG);
5724         if (!pinfoattr)
5725                 goto nla_put_failure;
5726         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
5727             nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
5728                         cur_params.dot11MeshRetryTimeout) ||
5729             nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
5730                         cur_params.dot11MeshConfirmTimeout) ||
5731             nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
5732                         cur_params.dot11MeshHoldingTimeout) ||
5733             nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
5734                         cur_params.dot11MeshMaxPeerLinks) ||
5735             nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES,
5736                        cur_params.dot11MeshMaxRetries) ||
5737             nla_put_u8(msg, NL80211_MESHCONF_TTL,
5738                        cur_params.dot11MeshTTL) ||
5739             nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL,
5740                        cur_params.element_ttl) ||
5741             nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
5742                        cur_params.auto_open_plinks) ||
5743             nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
5744                         cur_params.dot11MeshNbrOffsetMaxNeighbor) ||
5745             nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
5746                        cur_params.dot11MeshHWMPmaxPREQretries) ||
5747             nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
5748                         cur_params.path_refresh_time) ||
5749             nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
5750                         cur_params.min_discovery_timeout) ||
5751             nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
5752                         cur_params.dot11MeshHWMPactivePathTimeout) ||
5753             nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
5754                         cur_params.dot11MeshHWMPpreqMinInterval) ||
5755             nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
5756                         cur_params.dot11MeshHWMPperrMinInterval) ||
5757             nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
5758                         cur_params.dot11MeshHWMPnetDiameterTraversalTime) ||
5759             nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
5760                        cur_params.dot11MeshHWMPRootMode) ||
5761             nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
5762                         cur_params.dot11MeshHWMPRannInterval) ||
5763             nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
5764                        cur_params.dot11MeshGateAnnouncementProtocol) ||
5765             nla_put_u8(msg, NL80211_MESHCONF_FORWARDING,
5766                        cur_params.dot11MeshForwarding) ||
5767             nla_put_s32(msg, NL80211_MESHCONF_RSSI_THRESHOLD,
5768                         cur_params.rssi_threshold) ||
5769             nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE,
5770                         cur_params.ht_opmode) ||
5771             nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
5772                         cur_params.dot11MeshHWMPactivePathToRootTimeout) ||
5773             nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
5774                         cur_params.dot11MeshHWMProotInterval) ||
5775             nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
5776                         cur_params.dot11MeshHWMPconfirmationInterval) ||
5777             nla_put_u32(msg, NL80211_MESHCONF_POWER_MODE,
5778                         cur_params.power_mode) ||
5779             nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW,
5780                         cur_params.dot11MeshAwakeWindowDuration) ||
5781             nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT,
5782                         cur_params.plink_timeout))
5783                 goto nla_put_failure;
5784         nla_nest_end(msg, pinfoattr);
5785         genlmsg_end(msg, hdr);
5786         return genlmsg_reply(msg, info);
5787
5788  nla_put_failure:
5789         genlmsg_cancel(msg, hdr);
5790  out:
5791         nlmsg_free(msg);
5792         return -ENOBUFS;
5793 }
5794
5795 static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
5796         [NL80211_MESHCONF_RETRY_TIMEOUT] = { .type = NLA_U16 },
5797         [NL80211_MESHCONF_CONFIRM_TIMEOUT] = { .type = NLA_U16 },
5798         [NL80211_MESHCONF_HOLDING_TIMEOUT] = { .type = NLA_U16 },
5799         [NL80211_MESHCONF_MAX_PEER_LINKS] = { .type = NLA_U16 },
5800         [NL80211_MESHCONF_MAX_RETRIES] = { .type = NLA_U8 },
5801         [NL80211_MESHCONF_TTL] = { .type = NLA_U8 },
5802         [NL80211_MESHCONF_ELEMENT_TTL] = { .type = NLA_U8 },
5803         [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = { .type = NLA_U8 },
5804         [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] = { .type = NLA_U32 },
5805         [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
5806         [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
5807         [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = { .type = NLA_U16 },
5808         [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
5809         [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 },
5810         [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] = { .type = NLA_U16 },
5811         [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 },
5812         [NL80211_MESHCONF_HWMP_ROOTMODE] = { .type = NLA_U8 },
5813         [NL80211_MESHCONF_HWMP_RANN_INTERVAL] = { .type = NLA_U16 },
5814         [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = { .type = NLA_U8 },
5815         [NL80211_MESHCONF_FORWARDING] = { .type = NLA_U8 },
5816         [NL80211_MESHCONF_RSSI_THRESHOLD] = { .type = NLA_U32 },
5817         [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 },
5818         [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 },
5819         [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] = { .type = NLA_U16 },
5820         [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] = { .type = NLA_U16 },
5821         [NL80211_MESHCONF_POWER_MODE] = { .type = NLA_U32 },
5822         [NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 },
5823         [NL80211_MESHCONF_PLINK_TIMEOUT] = { .type = NLA_U32 },
5824 };
5825
5826 static const struct nla_policy
5827         nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
5828         [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 },
5829         [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
5830         [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
5831         [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
5832         [NL80211_MESH_SETUP_AUTH_PROTOCOL] = { .type = NLA_U8 },
5833         [NL80211_MESH_SETUP_USERSPACE_MPM] = { .type = NLA_FLAG },
5834         [NL80211_MESH_SETUP_IE] = { .type = NLA_BINARY,
5835                                     .len = IEEE80211_MAX_DATA_LEN },
5836         [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
5837 };
5838
5839 static int nl80211_check_bool(const struct nlattr *nla, u8 min, u8 max, bool *out)
5840 {
5841         u8 val = nla_get_u8(nla);
5842         if (val < min || val > max)
5843                 return -EINVAL;
5844         *out = val;
5845         return 0;
5846 }
5847
5848 static int nl80211_check_u8(const struct nlattr *nla, u8 min, u8 max, u8 *out)
5849 {
5850         u8 val = nla_get_u8(nla);
5851         if (val < min || val > max)
5852                 return -EINVAL;
5853         *out = val;
5854         return 0;
5855 }
5856
5857 static int nl80211_check_u16(const struct nlattr *nla, u16 min, u16 max, u16 *out)
5858 {
5859         u16 val = nla_get_u16(nla);
5860         if (val < min || val > max)
5861                 return -EINVAL;
5862         *out = val;
5863         return 0;
5864 }
5865
5866 static int nl80211_check_u32(const struct nlattr *nla, u32 min, u32 max, u32 *out)
5867 {
5868         u32 val = nla_get_u32(nla);
5869         if (val < min || val > max)
5870                 return -EINVAL;
5871         *out = val;
5872         return 0;
5873 }
5874
5875 static int nl80211_check_s32(const struct nlattr *nla, s32 min, s32 max, s32 *out)
5876 {
5877         s32 val = nla_get_s32(nla);
5878         if (val < min || val > max)
5879                 return -EINVAL;
5880         *out = val;
5881         return 0;
5882 }
5883
5884 static int nl80211_check_power_mode(const struct nlattr *nla,
5885                                     enum nl80211_mesh_power_mode min,
5886                                     enum nl80211_mesh_power_mode max,
5887                                     enum nl80211_mesh_power_mode *out)
5888 {
5889         u32 val = nla_get_u32(nla);
5890         if (val < min || val > max)
5891                 return -EINVAL;
5892         *out = val;
5893         return 0;
5894 }
5895
5896 static int nl80211_parse_mesh_config(struct genl_info *info,
5897                                      struct mesh_config *cfg,
5898                                      u32 *mask_out)
5899 {
5900         struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
5901         u32 mask = 0;
5902         u16 ht_opmode;
5903
5904 #define FILL_IN_MESH_PARAM_IF_SET(tb, cfg, param, min, max, mask, attr, fn) \
5905 do {                                                                        \
5906         if (tb[attr]) {                                                     \
5907                 if (fn(tb[attr], min, max, &cfg->param))                    \
5908                         return -EINVAL;                                     \
5909                 mask |= (1 << (attr - 1));                                  \
5910         }                                                                   \
5911 } while (0)
5912
5913         if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
5914                 return -EINVAL;
5915         if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX,
5916                              info->attrs[NL80211_ATTR_MESH_CONFIG],
5917                              nl80211_meshconf_params_policy, info->extack))
5918                 return -EINVAL;
5919
5920         /* This makes sure that there aren't more than 32 mesh config
5921          * parameters (otherwise our bitfield scheme would not work.) */
5922         BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
5923
5924         /* Fill in the params struct */
5925         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, 1, 255,
5926                                   mask, NL80211_MESHCONF_RETRY_TIMEOUT,
5927                                   nl80211_check_u16);
5928         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, 1, 255,
5929                                   mask, NL80211_MESHCONF_CONFIRM_TIMEOUT,
5930                                   nl80211_check_u16);
5931         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, 1, 255,
5932                                   mask, NL80211_MESHCONF_HOLDING_TIMEOUT,
5933                                   nl80211_check_u16);
5934         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, 0, 255,
5935                                   mask, NL80211_MESHCONF_MAX_PEER_LINKS,
5936                                   nl80211_check_u16);
5937         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, 0, 16,
5938                                   mask, NL80211_MESHCONF_MAX_RETRIES,
5939                                   nl80211_check_u8);
5940         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, 1, 255,
5941                                   mask, NL80211_MESHCONF_TTL, nl80211_check_u8);
5942         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl, 1, 255,
5943                                   mask, NL80211_MESHCONF_ELEMENT_TTL,
5944                                   nl80211_check_u8);
5945         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, 0, 1,
5946                                   mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
5947                                   nl80211_check_bool);
5948         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor,
5949                                   1, 255, mask,
5950                                   NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
5951                                   nl80211_check_u32);
5952         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, 0, 255,
5953                                   mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
5954                                   nl80211_check_u8);
5955         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, 1, 65535,
5956                                   mask, NL80211_MESHCONF_PATH_REFRESH_TIME,
5957                                   nl80211_check_u32);
5958         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, 1, 65535,
5959                                   mask, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
5960                                   nl80211_check_u16);
5961         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
5962                                   1, 65535, mask,
5963                                   NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
5964                                   nl80211_check_u32);
5965         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval,
5966                                   1, 65535, mask,
5967                                   NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
5968                                   nl80211_check_u16);
5969         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval,
5970                                   1, 65535, mask,
5971                                   NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
5972                                   nl80211_check_u16);
5973         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
5974                                   dot11MeshHWMPnetDiameterTraversalTime,
5975                                   1, 65535, mask,
5976                                   NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
5977                                   nl80211_check_u16);
5978         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, 0, 4,
5979                                   mask, NL80211_MESHCONF_HWMP_ROOTMODE,
5980                                   nl80211_check_u8);
5981         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, 1, 65535,
5982                                   mask, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
5983                                   nl80211_check_u16);
5984         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
5985                                   dot11MeshGateAnnouncementProtocol, 0, 1,
5986                                   mask, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
5987                                   nl80211_check_bool);
5988         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding, 0, 1,
5989                                   mask, NL80211_MESHCONF_FORWARDING,
5990                                   nl80211_check_bool);
5991         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold, -255, 0,
5992                                   mask, NL80211_MESHCONF_RSSI_THRESHOLD,
5993                                   nl80211_check_s32);
5994         /*
5995          * Check HT operation mode based on
5996          * IEEE 802.11 2012 8.4.2.59 HT Operation element.
5997          */
5998         if (tb[NL80211_MESHCONF_HT_OPMODE]) {
5999                 ht_opmode = nla_get_u16(tb[NL80211_MESHCONF_HT_OPMODE]);
6000
6001                 if (ht_opmode & ~(IEEE80211_HT_OP_MODE_PROTECTION |
6002                                   IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT |
6003                                   IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT))
6004                         return -EINVAL;
6005
6006                 if ((ht_opmode & IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT) &&
6007                     (ht_opmode & IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT))
6008                         return -EINVAL;
6009
6010                 switch (ht_opmode & IEEE80211_HT_OP_MODE_PROTECTION) {
6011                 case IEEE80211_HT_OP_MODE_PROTECTION_NONE:
6012                 case IEEE80211_HT_OP_MODE_PROTECTION_20MHZ:
6013                         if (ht_opmode & IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT)
6014                                 return -EINVAL;
6015                         break;
6016                 case IEEE80211_HT_OP_MODE_PROTECTION_NONMEMBER:
6017                 case IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED:
6018                         if (!(ht_opmode & IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT))
6019                                 return -EINVAL;
6020                         break;
6021                 }
6022                 cfg->ht_opmode = ht_opmode;
6023                 mask |= (1 << (NL80211_MESHCONF_HT_OPMODE - 1));
6024         }
6025         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathToRootTimeout,
6026                                   1, 65535, mask,
6027                                   NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
6028                                   nl80211_check_u32);
6029         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval, 1, 65535,
6030                                   mask, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
6031                                   nl80211_check_u16);
6032         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
6033                                   dot11MeshHWMPconfirmationInterval,
6034                                   1, 65535, mask,
6035                                   NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
6036                                   nl80211_check_u16);
6037         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, power_mode,
6038                                   NL80211_MESH_POWER_ACTIVE,
6039                                   NL80211_MESH_POWER_MAX,
6040                                   mask, NL80211_MESHCONF_POWER_MODE,
6041                                   nl80211_check_power_mode);
6042         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration,
6043                                   0, 65535, mask,
6044                                   NL80211_MESHCONF_AWAKE_WINDOW, nl80211_check_u16);
6045         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, plink_timeout, 0, 0xffffffff,
6046                                   mask, NL80211_MESHCONF_PLINK_TIMEOUT,
6047                                   nl80211_check_u32);
6048         if (mask_out)
6049                 *mask_out = mask;
6050
6051         return 0;
6052
6053 #undef FILL_IN_MESH_PARAM_IF_SET
6054 }
6055
6056 static int nl80211_parse_mesh_setup(struct genl_info *info,
6057                                      struct mesh_setup *setup)
6058 {
6059         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6060         struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
6061
6062         if (!info->attrs[NL80211_ATTR_MESH_SETUP])
6063                 return -EINVAL;
6064         if (nla_parse_nested(tb, NL80211_MESH_SETUP_ATTR_MAX,
6065                              info->attrs[NL80211_ATTR_MESH_SETUP],
6066                              nl80211_mesh_setup_params_policy, info->extack))
6067                 return -EINVAL;
6068
6069         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])
6070                 setup->sync_method =
6071                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ?
6072                  IEEE80211_SYNC_METHOD_VENDOR :
6073                  IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET;
6074
6075         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
6076                 setup->path_sel_proto =
6077                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
6078                  IEEE80211_PATH_PROTOCOL_VENDOR :
6079                  IEEE80211_PATH_PROTOCOL_HWMP;
6080
6081         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
6082                 setup->path_metric =
6083                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
6084                  IEEE80211_PATH_METRIC_VENDOR :
6085                  IEEE80211_PATH_METRIC_AIRTIME;
6086
6087         if (tb[NL80211_MESH_SETUP_IE]) {
6088                 struct nlattr *ieattr =
6089                         tb[NL80211_MESH_SETUP_IE];
6090                 if (!is_valid_ie_attr(ieattr))
6091                         return -EINVAL;
6092                 setup->ie = nla_data(ieattr);
6093                 setup->ie_len = nla_len(ieattr);
6094         }
6095         if (tb[NL80211_MESH_SETUP_USERSPACE_MPM] &&
6096             !(rdev->wiphy.features & NL80211_FEATURE_USERSPACE_MPM))
6097                 return -EINVAL;
6098         setup->user_mpm = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_MPM]);
6099         setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
6100         setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
6101         if (setup->is_secure)
6102                 setup->user_mpm = true;
6103
6104         if (tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]) {
6105                 if (!setup->user_mpm)
6106                         return -EINVAL;
6107                 setup->auth_id =
6108                         nla_get_u8(tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]);
6109         }
6110
6111         return 0;
6112 }
6113
6114 static int nl80211_update_mesh_config(struct sk_buff *skb,
6115                                       struct genl_info *info)
6116 {
6117         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6118         struct net_device *dev = info->user_ptr[1];
6119         struct wireless_dev *wdev = dev->ieee80211_ptr;
6120         struct mesh_config cfg;
6121         u32 mask;
6122         int err;
6123
6124         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
6125                 return -EOPNOTSUPP;
6126
6127         if (!rdev->ops->update_mesh_config)
6128                 return -EOPNOTSUPP;
6129
6130         err = nl80211_parse_mesh_config(info, &cfg, &mask);
6131         if (err)
6132                 return err;
6133
6134         wdev_lock(wdev);
6135         if (!wdev->mesh_id_len)
6136                 err = -ENOLINK;
6137
6138         if (!err)
6139                 err = rdev_update_mesh_config(rdev, dev, mask, &cfg);
6140
6141         wdev_unlock(wdev);
6142
6143         return err;
6144 }
6145
6146 static int nl80211_put_regdom(const struct ieee80211_regdomain *regdom,
6147                               struct sk_buff *msg)
6148 {
6149         struct nlattr *nl_reg_rules;
6150         unsigned int i;
6151
6152         if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, regdom->alpha2) ||
6153             (regdom->dfs_region &&
6154              nla_put_u8(msg, NL80211_ATTR_DFS_REGION, regdom->dfs_region)))
6155                 goto nla_put_failure;
6156
6157         nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES);
6158         if (!nl_reg_rules)
6159                 goto nla_put_failure;
6160
6161         for (i = 0; i < regdom->n_reg_rules; i++) {
6162                 struct nlattr *nl_reg_rule;
6163                 const struct ieee80211_reg_rule *reg_rule;
6164                 const struct ieee80211_freq_range *freq_range;
6165                 const struct ieee80211_power_rule *power_rule;
6166                 unsigned int max_bandwidth_khz;
6167
6168                 reg_rule = &regdom->reg_rules[i];
6169                 freq_range = &reg_rule->freq_range;
6170                 power_rule = &reg_rule->power_rule;
6171
6172                 nl_reg_rule = nla_nest_start(msg, i);
6173                 if (!nl_reg_rule)
6174                         goto nla_put_failure;
6175
6176                 max_bandwidth_khz = freq_range->max_bandwidth_khz;
6177                 if (!max_bandwidth_khz)
6178                         max_bandwidth_khz = reg_get_max_bandwidth(regdom,
6179                                                                   reg_rule);
6180
6181                 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS,
6182                                 reg_rule->flags) ||
6183                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START,
6184                                 freq_range->start_freq_khz) ||
6185                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END,
6186                                 freq_range->end_freq_khz) ||
6187                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
6188                                 max_bandwidth_khz) ||
6189                     nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
6190                                 power_rule->max_antenna_gain) ||
6191                     nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
6192                                 power_rule->max_eirp) ||
6193                     nla_put_u32(msg, NL80211_ATTR_DFS_CAC_TIME,
6194                                 reg_rule->dfs_cac_ms))
6195                         goto nla_put_failure;
6196
6197                 nla_nest_end(msg, nl_reg_rule);
6198         }
6199
6200         nla_nest_end(msg, nl_reg_rules);
6201         return 0;
6202
6203 nla_put_failure:
6204         return -EMSGSIZE;
6205 }
6206
6207 static int nl80211_get_reg_do(struct sk_buff *skb, struct genl_info *info)
6208 {
6209         const struct ieee80211_regdomain *regdom = NULL;
6210         struct cfg80211_registered_device *rdev;
6211         struct wiphy *wiphy = NULL;
6212         struct sk_buff *msg;
6213         void *hdr;
6214
6215         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6216         if (!msg)
6217                 return -ENOBUFS;
6218
6219         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
6220                              NL80211_CMD_GET_REG);
6221         if (!hdr)
6222                 goto put_failure;
6223
6224         if (info->attrs[NL80211_ATTR_WIPHY]) {
6225                 bool self_managed;
6226
6227                 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
6228                 if (IS_ERR(rdev)) {
6229                         nlmsg_free(msg);
6230                         return PTR_ERR(rdev);
6231                 }
6232
6233                 wiphy = &rdev->wiphy;
6234                 self_managed = wiphy->regulatory_flags &
6235                                REGULATORY_WIPHY_SELF_MANAGED;
6236                 regdom = get_wiphy_regdom(wiphy);
6237
6238                 /* a self-managed-reg device must have a private regdom */
6239                 if (WARN_ON(!regdom && self_managed)) {
6240                         nlmsg_free(msg);
6241                         return -EINVAL;
6242                 }
6243
6244                 if (regdom &&
6245                     nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
6246                         goto nla_put_failure;
6247         }
6248
6249         if (!wiphy && reg_last_request_cell_base() &&
6250             nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
6251                         NL80211_USER_REG_HINT_CELL_BASE))
6252                 goto nla_put_failure;
6253
6254         rcu_read_lock();
6255
6256         if (!regdom)
6257                 regdom = rcu_dereference(cfg80211_regdomain);
6258
6259         if (nl80211_put_regdom(regdom, msg))
6260                 goto nla_put_failure_rcu;
6261
6262         rcu_read_unlock();
6263
6264         genlmsg_end(msg, hdr);
6265         return genlmsg_reply(msg, info);
6266
6267 nla_put_failure_rcu:
6268         rcu_read_unlock();
6269 nla_put_failure:
6270         genlmsg_cancel(msg, hdr);
6271 put_failure:
6272         nlmsg_free(msg);
6273         return -EMSGSIZE;
6274 }
6275
6276 static int nl80211_send_regdom(struct sk_buff *msg, struct netlink_callback *cb,
6277                                u32 seq, int flags, struct wiphy *wiphy,
6278                                const struct ieee80211_regdomain *regdom)
6279 {
6280         void *hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
6281                                    NL80211_CMD_GET_REG);
6282
6283         if (!hdr)
6284                 return -1;
6285
6286         genl_dump_check_consistent(cb, hdr, &nl80211_fam);
6287
6288         if (nl80211_put_regdom(regdom, msg))
6289                 goto nla_put_failure;
6290
6291         if (!wiphy && reg_last_request_cell_base() &&
6292             nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
6293                         NL80211_USER_REG_HINT_CELL_BASE))
6294                 goto nla_put_failure;
6295
6296         if (wiphy &&
6297             nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
6298                 goto nla_put_failure;
6299
6300         if (wiphy && wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
6301             nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
6302                 goto nla_put_failure;
6303
6304         genlmsg_end(msg, hdr);
6305         return 0;
6306
6307 nla_put_failure:
6308         genlmsg_cancel(msg, hdr);
6309         return -EMSGSIZE;
6310 }
6311
6312 static int nl80211_get_reg_dump(struct sk_buff *skb,
6313                                 struct netlink_callback *cb)
6314 {
6315         const struct ieee80211_regdomain *regdom = NULL;
6316         struct cfg80211_registered_device *rdev;
6317         int err, reg_idx, start = cb->args[2];
6318
6319         rtnl_lock();
6320
6321         if (cfg80211_regdomain && start == 0) {
6322                 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
6323                                           NLM_F_MULTI, NULL,
6324                                           rtnl_dereference(cfg80211_regdomain));
6325                 if (err < 0)
6326                         goto out_err;
6327         }
6328
6329         /* the global regdom is idx 0 */
6330         reg_idx = 1;
6331         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
6332                 regdom = get_wiphy_regdom(&rdev->wiphy);
6333                 if (!regdom)
6334                         continue;
6335
6336                 if (++reg_idx <= start)
6337                         continue;
6338
6339                 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
6340                                           NLM_F_MULTI, &rdev->wiphy, regdom);
6341                 if (err < 0) {
6342                         reg_idx--;
6343                         break;
6344                 }
6345         }
6346
6347         cb->args[2] = reg_idx;
6348         err = skb->len;
6349 out_err:
6350         rtnl_unlock();
6351         return err;
6352 }
6353
6354 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
6355 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
6356         [NL80211_ATTR_REG_RULE_FLAGS]           = { .type = NLA_U32 },
6357         [NL80211_ATTR_FREQ_RANGE_START]         = { .type = NLA_U32 },
6358         [NL80211_ATTR_FREQ_RANGE_END]           = { .type = NLA_U32 },
6359         [NL80211_ATTR_FREQ_RANGE_MAX_BW]        = { .type = NLA_U32 },
6360         [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]  = { .type = NLA_U32 },
6361         [NL80211_ATTR_POWER_RULE_MAX_EIRP]      = { .type = NLA_U32 },
6362         [NL80211_ATTR_DFS_CAC_TIME]             = { .type = NLA_U32 },
6363 };
6364
6365 static int parse_reg_rule(struct nlattr *tb[],
6366         struct ieee80211_reg_rule *reg_rule)
6367 {
6368         struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
6369         struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
6370
6371         if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
6372                 return -EINVAL;
6373         if (!tb[NL80211_ATTR_FREQ_RANGE_START])
6374                 return -EINVAL;
6375         if (!tb[NL80211_ATTR_FREQ_RANGE_END])
6376                 return -EINVAL;
6377         if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
6378                 return -EINVAL;
6379         if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
6380                 return -EINVAL;
6381
6382         reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
6383
6384         freq_range->start_freq_khz =
6385                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
6386         freq_range->end_freq_khz =
6387                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
6388         freq_range->max_bandwidth_khz =
6389                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
6390
6391         power_rule->max_eirp =
6392                 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
6393
6394         if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
6395                 power_rule->max_antenna_gain =
6396                         nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
6397
6398         if (tb[NL80211_ATTR_DFS_CAC_TIME])
6399                 reg_rule->dfs_cac_ms =
6400                         nla_get_u32(tb[NL80211_ATTR_DFS_CAC_TIME]);
6401
6402         return 0;
6403 }
6404
6405 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
6406 {
6407         struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
6408         struct nlattr *nl_reg_rule;
6409         char *alpha2;
6410         int rem_reg_rules, r;
6411         u32 num_rules = 0, rule_idx = 0, size_of_regd;
6412         enum nl80211_dfs_regions dfs_region = NL80211_DFS_UNSET;
6413         struct ieee80211_regdomain *rd;
6414
6415         if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
6416                 return -EINVAL;
6417
6418         if (!info->attrs[NL80211_ATTR_REG_RULES])
6419                 return -EINVAL;
6420
6421         alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
6422
6423         if (info->attrs[NL80211_ATTR_DFS_REGION])
6424                 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]);
6425
6426         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
6427                             rem_reg_rules) {
6428                 num_rules++;
6429                 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
6430                         return -EINVAL;
6431         }
6432
6433         if (!reg_is_valid_request(alpha2))
6434                 return -EINVAL;
6435
6436         size_of_regd = sizeof(struct ieee80211_regdomain) +
6437                        num_rules * sizeof(struct ieee80211_reg_rule);
6438
6439         rd = kzalloc(size_of_regd, GFP_KERNEL);
6440         if (!rd)
6441                 return -ENOMEM;
6442
6443         rd->n_reg_rules = num_rules;
6444         rd->alpha2[0] = alpha2[0];
6445         rd->alpha2[1] = alpha2[1];
6446
6447         /*
6448          * Disable DFS master mode if the DFS region was
6449          * not supported or known on this kernel.
6450          */
6451         if (reg_supported_dfs_region(dfs_region))
6452                 rd->dfs_region = dfs_region;
6453
6454         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
6455                             rem_reg_rules) {
6456                 r = nla_parse_nested(tb, NL80211_REG_RULE_ATTR_MAX,
6457                                      nl_reg_rule, reg_rule_policy,
6458                                      info->extack);
6459                 if (r)
6460                         goto bad_reg;
6461                 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
6462                 if (r)
6463                         goto bad_reg;
6464
6465                 rule_idx++;
6466
6467                 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
6468                         r = -EINVAL;
6469                         goto bad_reg;
6470                 }
6471         }
6472
6473         /* set_regdom takes ownership of rd */
6474         return set_regdom(rd, REGD_SOURCE_CRDA);
6475  bad_reg:
6476         kfree(rd);
6477         return r;
6478 }
6479 #endif /* CONFIG_CFG80211_CRDA_SUPPORT */
6480
6481 static int validate_scan_freqs(struct nlattr *freqs)
6482 {
6483         struct nlattr *attr1, *attr2;
6484         int n_channels = 0, tmp1, tmp2;
6485
6486         nla_for_each_nested(attr1, freqs, tmp1)
6487                 if (nla_len(attr1) != sizeof(u32))
6488                         return 0;
6489
6490         nla_for_each_nested(attr1, freqs, tmp1) {
6491                 n_channels++;
6492                 /*
6493                  * Some hardware has a limited channel list for
6494                  * scanning, and it is pretty much nonsensical
6495                  * to scan for a channel twice, so disallow that
6496                  * and don't require drivers to check that the
6497                  * channel list they get isn't longer than what
6498                  * they can scan, as long as they can scan all
6499                  * the channels they registered at once.
6500                  */
6501                 nla_for_each_nested(attr2, freqs, tmp2)
6502                         if (attr1 != attr2 &&
6503                             nla_get_u32(attr1) == nla_get_u32(attr2))
6504                                 return 0;
6505         }
6506
6507         return n_channels;
6508 }
6509
6510 static bool is_band_valid(struct wiphy *wiphy, enum nl80211_band b)
6511 {
6512         return b < NUM_NL80211_BANDS && wiphy->bands[b];
6513 }
6514
6515 static int parse_bss_select(struct nlattr *nla, struct wiphy *wiphy,
6516                             struct cfg80211_bss_selection *bss_select)
6517 {
6518         struct nlattr *attr[NL80211_BSS_SELECT_ATTR_MAX + 1];
6519         struct nlattr *nest;
6520         int err;
6521         bool found = false;
6522         int i;
6523
6524         /* only process one nested attribute */
6525         nest = nla_data(nla);
6526         if (!nla_ok(nest, nla_len(nest)))
6527                 return -EINVAL;
6528
6529         err = nla_parse_nested(attr, NL80211_BSS_SELECT_ATTR_MAX, nest,
6530                                nl80211_bss_select_policy, NULL);
6531         if (err)
6532                 return err;
6533
6534         /* only one attribute may be given */
6535         for (i = 0; i <= NL80211_BSS_SELECT_ATTR_MAX; i++) {
6536                 if (attr[i]) {
6537                         if (found)
6538                                 return -EINVAL;
6539                         found = true;
6540                 }
6541         }
6542
6543         bss_select->behaviour = __NL80211_BSS_SELECT_ATTR_INVALID;
6544
6545         if (attr[NL80211_BSS_SELECT_ATTR_RSSI])
6546                 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI;
6547
6548         if (attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]) {
6549                 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_BAND_PREF;
6550                 bss_select->param.band_pref =
6551                         nla_get_u32(attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]);
6552                 if (!is_band_valid(wiphy, bss_select->param.band_pref))
6553                         return -EINVAL;
6554         }
6555
6556         if (attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]) {
6557                 struct nl80211_bss_select_rssi_adjust *adj_param;
6558
6559                 adj_param = nla_data(attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]);
6560                 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI_ADJUST;
6561                 bss_select->param.adjust.band = adj_param->band;
6562                 bss_select->param.adjust.delta = adj_param->delta;
6563                 if (!is_band_valid(wiphy, bss_select->param.adjust.band))
6564                         return -EINVAL;
6565         }
6566
6567         /* user-space did not provide behaviour attribute */
6568         if (bss_select->behaviour == __NL80211_BSS_SELECT_ATTR_INVALID)
6569                 return -EINVAL;
6570
6571         if (!(wiphy->bss_select_support & BIT(bss_select->behaviour)))
6572                 return -EINVAL;
6573
6574         return 0;
6575 }
6576
6577 static int nl80211_parse_random_mac(struct nlattr **attrs,
6578                                     u8 *mac_addr, u8 *mac_addr_mask)
6579 {
6580         int i;
6581
6582         if (!attrs[NL80211_ATTR_MAC] && !attrs[NL80211_ATTR_MAC_MASK]) {
6583                 eth_zero_addr(mac_addr);
6584                 eth_zero_addr(mac_addr_mask);
6585                 mac_addr[0] = 0x2;
6586                 mac_addr_mask[0] = 0x3;
6587
6588                 return 0;
6589         }
6590
6591         /* need both or none */
6592         if (!attrs[NL80211_ATTR_MAC] || !attrs[NL80211_ATTR_MAC_MASK])
6593                 return -EINVAL;
6594
6595         memcpy(mac_addr, nla_data(attrs[NL80211_ATTR_MAC]), ETH_ALEN);
6596         memcpy(mac_addr_mask, nla_data(attrs[NL80211_ATTR_MAC_MASK]), ETH_ALEN);
6597
6598         /* don't allow or configure an mcast address */
6599         if (!is_multicast_ether_addr(mac_addr_mask) ||
6600             is_multicast_ether_addr(mac_addr))
6601                 return -EINVAL;
6602
6603         /*
6604          * allow users to pass a MAC address that has bits set outside
6605          * of the mask, but don't bother drivers with having to deal
6606          * with such bits
6607          */
6608         for (i = 0; i < ETH_ALEN; i++)
6609                 mac_addr[i] &= mac_addr_mask[i];
6610
6611         return 0;
6612 }
6613
6614 static bool cfg80211_off_channel_oper_allowed(struct wireless_dev *wdev)
6615 {
6616         ASSERT_WDEV_LOCK(wdev);
6617
6618         if (!cfg80211_beaconing_iface_active(wdev))
6619                 return true;
6620
6621         if (!(wdev->chandef.chan->flags & IEEE80211_CHAN_RADAR))
6622                 return true;
6623
6624         return regulatory_pre_cac_allowed(wdev->wiphy);
6625 }
6626
6627 static int
6628 nl80211_check_scan_flags(struct wiphy *wiphy, struct wireless_dev *wdev,
6629                          void *request, struct nlattr **attrs,
6630                          bool is_sched_scan)
6631 {
6632         u8 *mac_addr, *mac_addr_mask;
6633         u32 *flags;
6634         enum nl80211_feature_flags randomness_flag;
6635
6636         if (!attrs[NL80211_ATTR_SCAN_FLAGS])
6637                 return 0;
6638
6639         if (is_sched_scan) {
6640                 struct cfg80211_sched_scan_request *req = request;
6641
6642                 randomness_flag = wdev ?
6643                                   NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR :
6644                                   NL80211_FEATURE_ND_RANDOM_MAC_ADDR;
6645                 flags = &req->flags;
6646                 mac_addr = req->mac_addr;
6647                 mac_addr_mask = req->mac_addr_mask;
6648         } else {
6649                 struct cfg80211_scan_request *req = request;
6650
6651                 randomness_flag = NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR;
6652                 flags = &req->flags;
6653                 mac_addr = req->mac_addr;
6654                 mac_addr_mask = req->mac_addr_mask;
6655         }
6656
6657         *flags = nla_get_u32(attrs[NL80211_ATTR_SCAN_FLAGS]);
6658
6659         if ((*flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
6660             !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN))
6661                 return -EOPNOTSUPP;
6662
6663         if (*flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
6664                 int err;
6665
6666                 if (!(wiphy->features & randomness_flag) ||
6667                     (wdev && wdev->current_bss))
6668                         return -EOPNOTSUPP;
6669
6670                 err = nl80211_parse_random_mac(attrs, mac_addr, mac_addr_mask);
6671                 if (err)
6672                         return err;
6673         }
6674
6675         if ((*flags & NL80211_SCAN_FLAG_FILS_MAX_CHANNEL_TIME) &&
6676             !wiphy_ext_feature_isset(wiphy,
6677                                      NL80211_EXT_FEATURE_FILS_MAX_CHANNEL_TIME))
6678                 return -EOPNOTSUPP;
6679
6680         if ((*flags & NL80211_SCAN_FLAG_ACCEPT_BCAST_PROBE_RESP) &&
6681            !wiphy_ext_feature_isset(wiphy,
6682                                     NL80211_EXT_FEATURE_ACCEPT_BCAST_PROBE_RESP))
6683                 return -EOPNOTSUPP;
6684
6685         if ((*flags & NL80211_SCAN_FLAG_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION) &&
6686             !wiphy_ext_feature_isset(wiphy,
6687                                      NL80211_EXT_FEATURE_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION))
6688                 return -EOPNOTSUPP;
6689
6690         if ((*flags & NL80211_SCAN_FLAG_OCE_PROBE_REQ_HIGH_TX_RATE) &&
6691             !wiphy_ext_feature_isset(wiphy,
6692                                      NL80211_EXT_FEATURE_OCE_PROBE_REQ_HIGH_TX_RATE))
6693                 return -EOPNOTSUPP;
6694
6695         return 0;
6696 }
6697
6698 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
6699 {
6700         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6701         struct wireless_dev *wdev = info->user_ptr[1];
6702         struct cfg80211_scan_request *request;
6703         struct nlattr *attr;
6704         struct wiphy *wiphy;
6705         int err, tmp, n_ssids = 0, n_channels, i;
6706         size_t ie_len;
6707
6708         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6709                 return -EINVAL;
6710
6711         wiphy = &rdev->wiphy;
6712
6713         if (wdev->iftype == NL80211_IFTYPE_NAN)
6714                 return -EOPNOTSUPP;
6715
6716         if (!rdev->ops->scan)
6717                 return -EOPNOTSUPP;
6718
6719         if (rdev->scan_req || rdev->scan_msg) {
6720                 err = -EBUSY;
6721                 goto unlock;
6722         }
6723
6724         if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
6725                 n_channels = validate_scan_freqs(
6726                                 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
6727                 if (!n_channels) {
6728                         err = -EINVAL;
6729                         goto unlock;
6730                 }
6731         } else {
6732                 n_channels = ieee80211_get_num_supported_channels(wiphy);
6733         }
6734
6735         if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
6736                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
6737                         n_ssids++;
6738
6739         if (n_ssids > wiphy->max_scan_ssids) {
6740                 err = -EINVAL;
6741                 goto unlock;
6742         }
6743
6744         if (info->attrs[NL80211_ATTR_IE])
6745                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6746         else
6747                 ie_len = 0;
6748
6749         if (ie_len > wiphy->max_scan_ie_len) {
6750                 err = -EINVAL;
6751                 goto unlock;
6752         }
6753
6754         request = kzalloc(sizeof(*request)
6755                         + sizeof(*request->ssids) * n_ssids
6756                         + sizeof(*request->channels) * n_channels
6757                         + ie_len, GFP_KERNEL);
6758         if (!request) {
6759                 err = -ENOMEM;
6760                 goto unlock;
6761         }
6762
6763         if (n_ssids)
6764                 request->ssids = (void *)&request->channels[n_channels];
6765         request->n_ssids = n_ssids;
6766         if (ie_len) {
6767                 if (n_ssids)
6768                         request->ie = (void *)(request->ssids + n_ssids);
6769                 else
6770                         request->ie = (void *)(request->channels + n_channels);
6771         }
6772
6773         i = 0;
6774         if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
6775                 /* user specified, bail out if channel not found */
6776                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) {
6777                         struct ieee80211_channel *chan;
6778
6779                         chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
6780
6781                         if (!chan) {
6782                                 err = -EINVAL;
6783                                 goto out_free;
6784                         }
6785
6786                         /* ignore disabled channels */
6787                         if (chan->flags & IEEE80211_CHAN_DISABLED)
6788                                 continue;
6789
6790                         request->channels[i] = chan;
6791                         i++;
6792                 }
6793         } else {
6794                 enum nl80211_band band;
6795
6796                 /* all channels */
6797                 for (band = 0; band < NUM_NL80211_BANDS; band++) {
6798                         int j;
6799
6800                         if (!wiphy->bands[band])
6801                                 continue;
6802                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
6803                                 struct ieee80211_channel *chan;
6804
6805                                 chan = &wiphy->bands[band]->channels[j];
6806
6807                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
6808                                         continue;
6809
6810                                 request->channels[i] = chan;
6811                                 i++;
6812                         }
6813                 }
6814         }
6815
6816         if (!i) {
6817                 err = -EINVAL;
6818                 goto out_free;
6819         }
6820
6821         request->n_channels = i;
6822
6823         wdev_lock(wdev);
6824         if (!cfg80211_off_channel_oper_allowed(wdev)) {
6825                 struct ieee80211_channel *chan;
6826
6827                 if (request->n_channels != 1) {
6828                         wdev_unlock(wdev);
6829                         err = -EBUSY;
6830                         goto out_free;
6831                 }
6832
6833                 chan = request->channels[0];
6834                 if (chan->center_freq != wdev->chandef.chan->center_freq) {
6835                         wdev_unlock(wdev);
6836                         err = -EBUSY;
6837                         goto out_free;
6838                 }
6839         }
6840         wdev_unlock(wdev);
6841
6842         i = 0;
6843         if (n_ssids) {
6844                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
6845                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
6846                                 err = -EINVAL;
6847                                 goto out_free;
6848                         }
6849                         request->ssids[i].ssid_len = nla_len(attr);
6850                         memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
6851                         i++;
6852                 }
6853         }
6854
6855         if (info->attrs[NL80211_ATTR_IE]) {
6856                 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6857                 memcpy((void *)request->ie,
6858                        nla_data(info->attrs[NL80211_ATTR_IE]),
6859                        request->ie_len);
6860         }
6861
6862         for (i = 0; i < NUM_NL80211_BANDS; i++)
6863                 if (wiphy->bands[i])
6864                         request->rates[i] =
6865                                 (1 << wiphy->bands[i]->n_bitrates) - 1;
6866
6867         if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
6868                 nla_for_each_nested(attr,
6869                                     info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
6870                                     tmp) {
6871                         enum nl80211_band band = nla_type(attr);
6872
6873                         if (band < 0 || band >= NUM_NL80211_BANDS) {
6874                                 err = -EINVAL;
6875                                 goto out_free;
6876                         }
6877
6878                         if (!wiphy->bands[band])
6879                                 continue;
6880
6881                         err = ieee80211_get_ratemask(wiphy->bands[band],
6882                                                      nla_data(attr),
6883                                                      nla_len(attr),
6884                                                      &request->rates[band]);
6885                         if (err)
6886                                 goto out_free;
6887                 }
6888         }
6889
6890         if (info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]) {
6891                 if (!wiphy_ext_feature_isset(wiphy,
6892                                         NL80211_EXT_FEATURE_SET_SCAN_DWELL)) {
6893                         err = -EOPNOTSUPP;
6894                         goto out_free;
6895                 }
6896
6897                 request->duration =
6898                         nla_get_u16(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]);
6899                 request->duration_mandatory =
6900                         nla_get_flag(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION_MANDATORY]);
6901         }
6902
6903         err = nl80211_check_scan_flags(wiphy, wdev, request, info->attrs,
6904                                        false);
6905         if (err)
6906                 goto out_free;
6907
6908         request->no_cck =
6909                 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
6910
6911         /* Initial implementation used NL80211_ATTR_MAC to set the specific
6912          * BSSID to scan for. This was problematic because that same attribute
6913          * was already used for another purpose (local random MAC address). The
6914          * NL80211_ATTR_BSSID attribute was added to fix this. For backwards
6915          * compatibility with older userspace components, also use the
6916          * NL80211_ATTR_MAC value here if it can be determined to be used for
6917          * the specific BSSID use case instead of the random MAC address
6918          * (NL80211_ATTR_SCAN_FLAGS is used to enable random MAC address use).
6919          */
6920         if (info->attrs[NL80211_ATTR_BSSID])
6921                 memcpy(request->bssid,
6922                        nla_data(info->attrs[NL80211_ATTR_BSSID]), ETH_ALEN);
6923         else if (!(request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) &&
6924                  info->attrs[NL80211_ATTR_MAC])
6925                 memcpy(request->bssid, nla_data(info->attrs[NL80211_ATTR_MAC]),
6926                        ETH_ALEN);
6927         else
6928                 eth_broadcast_addr(request->bssid);
6929
6930         request->wdev = wdev;
6931         request->wiphy = &rdev->wiphy;
6932         request->scan_start = jiffies;
6933
6934         rdev->scan_req = request;
6935         err = rdev_scan(rdev, request);
6936
6937         if (!err) {
6938                 nl80211_send_scan_start(rdev, wdev);
6939                 if (wdev->netdev)
6940                         dev_hold(wdev->netdev);
6941         } else {
6942  out_free:
6943                 rdev->scan_req = NULL;
6944                 kfree(request);
6945         }
6946
6947  unlock:
6948         return err;
6949 }
6950
6951 static int nl80211_abort_scan(struct sk_buff *skb, struct genl_info *info)
6952 {
6953         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6954         struct wireless_dev *wdev = info->user_ptr[1];
6955
6956         if (!rdev->ops->abort_scan)
6957                 return -EOPNOTSUPP;
6958
6959         if (rdev->scan_msg)
6960                 return 0;
6961
6962         if (!rdev->scan_req)
6963                 return -ENOENT;
6964
6965         rdev_abort_scan(rdev, wdev);
6966         return 0;
6967 }
6968
6969 static int
6970 nl80211_parse_sched_scan_plans(struct wiphy *wiphy, int n_plans,
6971                                struct cfg80211_sched_scan_request *request,
6972                                struct nlattr **attrs)
6973 {
6974         int tmp, err, i = 0;
6975         struct nlattr *attr;
6976
6977         if (!attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
6978                 u32 interval;
6979
6980                 /*
6981                  * If scan plans are not specified,
6982                  * %NL80211_ATTR_SCHED_SCAN_INTERVAL will be specified. In this
6983                  * case one scan plan will be set with the specified scan
6984                  * interval and infinite number of iterations.
6985                  */
6986                 interval = nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
6987                 if (!interval)
6988                         return -EINVAL;
6989
6990                 request->scan_plans[0].interval =
6991                         DIV_ROUND_UP(interval, MSEC_PER_SEC);
6992                 if (!request->scan_plans[0].interval)
6993                         return -EINVAL;
6994
6995                 if (request->scan_plans[0].interval >
6996                     wiphy->max_sched_scan_plan_interval)
6997                         request->scan_plans[0].interval =
6998                                 wiphy->max_sched_scan_plan_interval;
6999
7000                 return 0;
7001         }
7002
7003         nla_for_each_nested(attr, attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp) {
7004                 struct nlattr *plan[NL80211_SCHED_SCAN_PLAN_MAX + 1];
7005
7006                 if (WARN_ON(i >= n_plans))
7007                         return -EINVAL;
7008
7009                 err = nla_parse_nested(plan, NL80211_SCHED_SCAN_PLAN_MAX,
7010                                        attr, nl80211_plan_policy, NULL);
7011                 if (err)
7012                         return err;
7013
7014                 if (!plan[NL80211_SCHED_SCAN_PLAN_INTERVAL])
7015                         return -EINVAL;
7016
7017                 request->scan_plans[i].interval =
7018                         nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_INTERVAL]);
7019                 if (!request->scan_plans[i].interval ||
7020                     request->scan_plans[i].interval >
7021                     wiphy->max_sched_scan_plan_interval)
7022                         return -EINVAL;
7023
7024                 if (plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]) {
7025                         request->scan_plans[i].iterations =
7026                                 nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]);
7027                         if (!request->scan_plans[i].iterations ||
7028                             (request->scan_plans[i].iterations >
7029                              wiphy->max_sched_scan_plan_iterations))
7030                                 return -EINVAL;
7031                 } else if (i < n_plans - 1) {
7032                         /*
7033                          * All scan plans but the last one must specify
7034                          * a finite number of iterations
7035                          */
7036                         return -EINVAL;
7037                 }
7038
7039                 i++;
7040         }
7041
7042         /*
7043          * The last scan plan must not specify the number of
7044          * iterations, it is supposed to run infinitely
7045          */
7046         if (request->scan_plans[n_plans - 1].iterations)
7047                 return  -EINVAL;
7048
7049         return 0;
7050 }
7051
7052 static struct cfg80211_sched_scan_request *
7053 nl80211_parse_sched_scan(struct wiphy *wiphy, struct wireless_dev *wdev,
7054                          struct nlattr **attrs, int max_match_sets)
7055 {
7056         struct cfg80211_sched_scan_request *request;
7057         struct nlattr *attr;
7058         int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i, n_plans = 0;
7059         enum nl80211_band band;
7060         size_t ie_len;
7061         struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
7062         s32 default_match_rssi = NL80211_SCAN_RSSI_THOLD_OFF;
7063
7064         if (!is_valid_ie_attr(attrs[NL80211_ATTR_IE]))
7065                 return ERR_PTR(-EINVAL);
7066
7067         if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
7068                 n_channels = validate_scan_freqs(
7069                                 attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
7070                 if (!n_channels)
7071                         return ERR_PTR(-EINVAL);
7072         } else {
7073                 n_channels = ieee80211_get_num_supported_channels(wiphy);
7074         }
7075
7076         if (attrs[NL80211_ATTR_SCAN_SSIDS])
7077                 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
7078                                     tmp)
7079                         n_ssids++;
7080
7081         if (n_ssids > wiphy->max_sched_scan_ssids)
7082                 return ERR_PTR(-EINVAL);
7083
7084         /*
7085          * First, count the number of 'real' matchsets. Due to an issue with
7086          * the old implementation, matchsets containing only the RSSI attribute
7087          * (NL80211_SCHED_SCAN_MATCH_ATTR_RSSI) are considered as the 'default'
7088          * RSSI for all matchsets, rather than their own matchset for reporting
7089          * all APs with a strong RSSI. This is needed to be compatible with
7090          * older userspace that treated a matchset with only the RSSI as the
7091          * global RSSI for all other matchsets - if there are other matchsets.
7092          */
7093         if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
7094                 nla_for_each_nested(attr,
7095                                     attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
7096                                     tmp) {
7097                         struct nlattr *rssi;
7098
7099                         err = nla_parse_nested(tb,
7100                                                NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
7101                                                attr, nl80211_match_policy,
7102                                                NULL);
7103                         if (err)
7104                                 return ERR_PTR(err);
7105
7106                         /* SSID and BSSID are mutually exclusive */
7107                         if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID] &&
7108                             tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID])
7109                                 return ERR_PTR(-EINVAL);
7110
7111                         /* add other standalone attributes here */
7112                         if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID] ||
7113                             tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID]) {
7114                                 n_match_sets++;
7115                                 continue;
7116                         }
7117                         rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
7118                         if (rssi)
7119                                 default_match_rssi = nla_get_s32(rssi);
7120                 }
7121         }
7122
7123         /* However, if there's no other matchset, add the RSSI one */
7124         if (!n_match_sets && default_match_rssi != NL80211_SCAN_RSSI_THOLD_OFF)
7125                 n_match_sets = 1;
7126
7127         if (n_match_sets > max_match_sets)
7128                 return ERR_PTR(-EINVAL);
7129
7130         if (attrs[NL80211_ATTR_IE])
7131                 ie_len = nla_len(attrs[NL80211_ATTR_IE]);
7132         else
7133                 ie_len = 0;
7134
7135         if (ie_len > wiphy->max_sched_scan_ie_len)
7136                 return ERR_PTR(-EINVAL);
7137
7138         if (attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
7139                 /*
7140                  * NL80211_ATTR_SCHED_SCAN_INTERVAL must not be specified since
7141                  * each scan plan already specifies its own interval
7142                  */
7143                 if (attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
7144                         return ERR_PTR(-EINVAL);
7145
7146                 nla_for_each_nested(attr,
7147                                     attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp)
7148                         n_plans++;
7149         } else {
7150                 /*
7151                  * The scan interval attribute is kept for backward
7152                  * compatibility. If no scan plans are specified and sched scan
7153                  * interval is specified, one scan plan will be set with this
7154                  * scan interval and infinite number of iterations.
7155                  */
7156                 if (!attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
7157                         return ERR_PTR(-EINVAL);
7158
7159                 n_plans = 1;
7160         }
7161
7162         if (!n_plans || n_plans > wiphy->max_sched_scan_plans)
7163                 return ERR_PTR(-EINVAL);
7164
7165         if (!wiphy_ext_feature_isset(
7166                     wiphy, NL80211_EXT_FEATURE_SCHED_SCAN_RELATIVE_RSSI) &&
7167             (attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI] ||
7168              attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]))
7169                 return ERR_PTR(-EINVAL);
7170
7171         request = kzalloc(sizeof(*request)
7172                         + sizeof(*request->ssids) * n_ssids
7173                         + sizeof(*request->match_sets) * n_match_sets
7174                         + sizeof(*request->scan_plans) * n_plans
7175                         + sizeof(*request->channels) * n_channels
7176                         + ie_len, GFP_KERNEL);
7177         if (!request)
7178                 return ERR_PTR(-ENOMEM);
7179
7180         if (n_ssids)
7181                 request->ssids = (void *)&request->channels[n_channels];
7182         request->n_ssids = n_ssids;
7183         if (ie_len) {
7184                 if (n_ssids)
7185                         request->ie = (void *)(request->ssids + n_ssids);
7186                 else
7187                         request->ie = (void *)(request->channels + n_channels);
7188         }
7189
7190         if (n_match_sets) {
7191                 if (request->ie)
7192                         request->match_sets = (void *)(request->ie + ie_len);
7193                 else if (n_ssids)
7194                         request->match_sets =
7195                                 (void *)(request->ssids + n_ssids);
7196                 else
7197                         request->match_sets =
7198                                 (void *)(request->channels + n_channels);
7199         }
7200         request->n_match_sets = n_match_sets;
7201
7202         if (n_match_sets)
7203                 request->scan_plans = (void *)(request->match_sets +
7204                                                n_match_sets);
7205         else if (request->ie)
7206                 request->scan_plans = (void *)(request->ie + ie_len);
7207         else if (n_ssids)
7208                 request->scan_plans = (void *)(request->ssids + n_ssids);
7209         else
7210                 request->scan_plans = (void *)(request->channels + n_channels);
7211
7212         request->n_scan_plans = n_plans;
7213
7214         i = 0;
7215         if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
7216                 /* user specified, bail out if channel not found */
7217                 nla_for_each_nested(attr,
7218                                     attrs[NL80211_ATTR_SCAN_FREQUENCIES],
7219                                     tmp) {
7220                         struct ieee80211_channel *chan;
7221
7222                         chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
7223
7224                         if (!chan) {
7225                                 err = -EINVAL;
7226                                 goto out_free;
7227                         }
7228
7229                         /* ignore disabled channels */
7230                         if (chan->flags & IEEE80211_CHAN_DISABLED)
7231                                 continue;
7232
7233                         request->channels[i] = chan;
7234                         i++;
7235                 }
7236         } else {
7237                 /* all channels */
7238                 for (band = 0; band < NUM_NL80211_BANDS; band++) {
7239                         int j;
7240
7241                         if (!wiphy->bands[band])
7242                                 continue;
7243                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
7244                                 struct ieee80211_channel *chan;
7245
7246                                 chan = &wiphy->bands[band]->channels[j];
7247
7248                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
7249                                         continue;
7250
7251                                 request->channels[i] = chan;
7252                                 i++;
7253                         }
7254                 }
7255         }
7256
7257         if (!i) {
7258                 err = -EINVAL;
7259                 goto out_free;
7260         }
7261
7262         request->n_channels = i;
7263
7264         i = 0;
7265         if (n_ssids) {
7266                 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
7267                                     tmp) {
7268                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
7269                                 err = -EINVAL;
7270                                 goto out_free;
7271                         }
7272                         request->ssids[i].ssid_len = nla_len(attr);
7273                         memcpy(request->ssids[i].ssid, nla_data(attr),
7274                                nla_len(attr));
7275                         i++;
7276                 }
7277         }
7278
7279         i = 0;
7280         if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
7281                 nla_for_each_nested(attr,
7282                                     attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
7283                                     tmp) {
7284                         struct nlattr *ssid, *bssid, *rssi;
7285
7286                         err = nla_parse_nested(tb,
7287                                                NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
7288                                                attr, nl80211_match_policy,
7289                                                NULL);
7290                         if (err)
7291                                 goto out_free;
7292                         ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID];
7293                         bssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID];
7294                         if (ssid || bssid) {
7295                                 if (WARN_ON(i >= n_match_sets)) {
7296                                         /* this indicates a programming error,
7297                                          * the loop above should have verified
7298                                          * things properly
7299                                          */
7300                                         err = -EINVAL;
7301                                         goto out_free;
7302                                 }
7303
7304                                 if (ssid) {
7305                                         if (nla_len(ssid) > IEEE80211_MAX_SSID_LEN) {
7306                                                 err = -EINVAL;
7307                                                 goto out_free;
7308                                         }
7309                                         memcpy(request->match_sets[i].ssid.ssid,
7310                                                nla_data(ssid), nla_len(ssid));
7311                                         request->match_sets[i].ssid.ssid_len =
7312                                                 nla_len(ssid);
7313                                 }
7314                                 if (bssid) {
7315                                         if (nla_len(bssid) != ETH_ALEN) {
7316                                                 err = -EINVAL;
7317                                                 goto out_free;
7318                                         }
7319                                         memcpy(request->match_sets[i].bssid,
7320                                                nla_data(bssid), ETH_ALEN);
7321                                 }
7322
7323                                 /* special attribute - old implementation w/a */
7324                                 request->match_sets[i].rssi_thold =
7325                                         default_match_rssi;
7326                                 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
7327                                 if (rssi)
7328                                         request->match_sets[i].rssi_thold =
7329                                                 nla_get_s32(rssi);
7330                         }
7331                         i++;
7332                 }
7333
7334                 /* there was no other matchset, so the RSSI one is alone */
7335                 if (i == 0 && n_match_sets)
7336                         request->match_sets[0].rssi_thold = default_match_rssi;
7337
7338                 request->min_rssi_thold = INT_MAX;
7339                 for (i = 0; i < n_match_sets; i++)
7340                         request->min_rssi_thold =
7341                                 min(request->match_sets[i].rssi_thold,
7342                                     request->min_rssi_thold);
7343         } else {
7344                 request->min_rssi_thold = NL80211_SCAN_RSSI_THOLD_OFF;
7345         }
7346
7347         if (ie_len) {
7348                 request->ie_len = ie_len;
7349                 memcpy((void *)request->ie,
7350                        nla_data(attrs[NL80211_ATTR_IE]),
7351                        request->ie_len);
7352         }
7353
7354         err = nl80211_check_scan_flags(wiphy, wdev, request, attrs, true);
7355         if (err)
7356                 goto out_free;
7357
7358         if (attrs[NL80211_ATTR_SCHED_SCAN_DELAY])
7359                 request->delay =
7360                         nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_DELAY]);
7361
7362         if (attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI]) {
7363                 request->relative_rssi = nla_get_s8(
7364                         attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI]);
7365                 request->relative_rssi_set = true;
7366         }
7367
7368         if (request->relative_rssi_set &&
7369             attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]) {
7370                 struct nl80211_bss_select_rssi_adjust *rssi_adjust;
7371
7372                 rssi_adjust = nla_data(
7373                         attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]);
7374                 request->rssi_adjust.band = rssi_adjust->band;
7375                 request->rssi_adjust.delta = rssi_adjust->delta;
7376                 if (!is_band_valid(wiphy, request->rssi_adjust.band)) {
7377                         err = -EINVAL;
7378                         goto out_free;
7379                 }
7380         }
7381
7382         err = nl80211_parse_sched_scan_plans(wiphy, n_plans, request, attrs);
7383         if (err)
7384                 goto out_free;
7385
7386         request->scan_start = jiffies;
7387
7388         return request;
7389
7390 out_free:
7391         kfree(request);
7392         return ERR_PTR(err);
7393 }
7394
7395 static int nl80211_start_sched_scan(struct sk_buff *skb,
7396                                     struct genl_info *info)
7397 {
7398         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7399         struct net_device *dev = info->user_ptr[1];
7400         struct wireless_dev *wdev = dev->ieee80211_ptr;
7401         struct cfg80211_sched_scan_request *sched_scan_req;
7402         bool want_multi;
7403         int err;
7404
7405         if (!rdev->wiphy.max_sched_scan_reqs || !rdev->ops->sched_scan_start)
7406                 return -EOPNOTSUPP;
7407
7408         want_multi = info->attrs[NL80211_ATTR_SCHED_SCAN_MULTI];
7409         err = cfg80211_sched_scan_req_possible(rdev, want_multi);
7410         if (err)
7411                 return err;
7412
7413         sched_scan_req = nl80211_parse_sched_scan(&rdev->wiphy, wdev,
7414                                                   info->attrs,
7415                                                   rdev->wiphy.max_match_sets);
7416
7417         err = PTR_ERR_OR_ZERO(sched_scan_req);
7418         if (err)
7419                 goto out_err;
7420
7421         /* leave request id zero for legacy request
7422          * or if driver does not support multi-scheduled scan
7423          */
7424         if (want_multi && rdev->wiphy.max_sched_scan_reqs > 1) {
7425                 while (!sched_scan_req->reqid)
7426                         sched_scan_req->reqid = rdev->wiphy.cookie_counter++;
7427         }
7428
7429         err = rdev_sched_scan_start(rdev, dev, sched_scan_req);
7430         if (err)
7431                 goto out_free;
7432
7433         sched_scan_req->dev = dev;
7434         sched_scan_req->wiphy = &rdev->wiphy;
7435
7436         if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
7437                 sched_scan_req->owner_nlportid = info->snd_portid;
7438
7439         cfg80211_add_sched_scan_req(rdev, sched_scan_req);
7440
7441         nl80211_send_sched_scan(sched_scan_req, NL80211_CMD_START_SCHED_SCAN);
7442         return 0;
7443
7444 out_free:
7445         kfree(sched_scan_req);
7446 out_err:
7447         return err;
7448 }
7449
7450 static int nl80211_stop_sched_scan(struct sk_buff *skb,
7451                                    struct genl_info *info)
7452 {
7453         struct cfg80211_sched_scan_request *req;
7454         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7455         u64 cookie;
7456
7457         if (!rdev->wiphy.max_sched_scan_reqs || !rdev->ops->sched_scan_stop)
7458                 return -EOPNOTSUPP;
7459
7460         if (info->attrs[NL80211_ATTR_COOKIE]) {
7461                 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
7462                 return __cfg80211_stop_sched_scan(rdev, cookie, false);
7463         }
7464
7465         req = list_first_or_null_rcu(&rdev->sched_scan_req_list,
7466                                      struct cfg80211_sched_scan_request,
7467                                      list);
7468         if (!req || req->reqid ||
7469             (req->owner_nlportid &&
7470              req->owner_nlportid != info->snd_portid))
7471                 return -ENOENT;
7472
7473         return cfg80211_stop_sched_scan_req(rdev, req, false);
7474 }
7475
7476 static int nl80211_start_radar_detection(struct sk_buff *skb,
7477                                          struct genl_info *info)
7478 {
7479         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7480         struct net_device *dev = info->user_ptr[1];
7481         struct wireless_dev *wdev = dev->ieee80211_ptr;
7482         struct cfg80211_chan_def chandef;
7483         enum nl80211_dfs_regions dfs_region;
7484         unsigned int cac_time_ms;
7485         int err;
7486
7487         dfs_region = reg_get_dfs_region(wdev->wiphy);
7488         if (dfs_region == NL80211_DFS_UNSET)
7489                 return -EINVAL;
7490
7491         err = nl80211_parse_chandef(rdev, info, &chandef);
7492         if (err)
7493                 return err;
7494
7495         if (netif_carrier_ok(dev))
7496                 return -EBUSY;
7497
7498         if (wdev->cac_started)
7499                 return -EBUSY;
7500
7501         err = cfg80211_chandef_dfs_required(wdev->wiphy, &chandef,
7502                                             wdev->iftype);
7503         if (err < 0)
7504                 return err;
7505
7506         if (err == 0)
7507                 return -EINVAL;
7508
7509         if (!cfg80211_chandef_dfs_usable(wdev->wiphy, &chandef))
7510                 return -EINVAL;
7511
7512         if (!rdev->ops->start_radar_detection)
7513                 return -EOPNOTSUPP;
7514
7515         cac_time_ms = cfg80211_chandef_dfs_cac_time(&rdev->wiphy, &chandef);
7516         if (WARN_ON(!cac_time_ms))
7517                 cac_time_ms = IEEE80211_DFS_MIN_CAC_TIME_MS;
7518
7519         err = rdev_start_radar_detection(rdev, dev, &chandef, cac_time_ms);
7520         if (!err) {
7521                 wdev->chandef = chandef;
7522                 wdev->cac_started = true;
7523                 wdev->cac_start_time = jiffies;
7524                 wdev->cac_time_ms = cac_time_ms;
7525         }
7526         return err;
7527 }
7528
7529 static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info)
7530 {
7531         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7532         struct net_device *dev = info->user_ptr[1];
7533         struct wireless_dev *wdev = dev->ieee80211_ptr;
7534         struct cfg80211_csa_settings params;
7535         /* csa_attrs is defined static to avoid waste of stack size - this
7536          * function is called under RTNL lock, so this should not be a problem.
7537          */
7538         static struct nlattr *csa_attrs[NL80211_ATTR_MAX+1];
7539         int err;
7540         bool need_new_beacon = false;
7541         bool need_handle_dfs_flag = true;
7542         int len, i;
7543         u32 cs_count;
7544
7545         if (!rdev->ops->channel_switch ||
7546             !(rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH))
7547                 return -EOPNOTSUPP;
7548
7549         switch (dev->ieee80211_ptr->iftype) {
7550         case NL80211_IFTYPE_AP:
7551         case NL80211_IFTYPE_P2P_GO:
7552                 need_new_beacon = true;
7553                 /* For all modes except AP the handle_dfs flag needs to be
7554                  * supplied to tell the kernel that userspace will handle radar
7555                  * events when they happen. Otherwise a switch to a channel
7556                  * requiring DFS will be rejected.
7557                  */
7558                 need_handle_dfs_flag = false;
7559
7560                 /* useless if AP is not running */
7561                 if (!wdev->beacon_interval)
7562                         return -ENOTCONN;
7563                 break;
7564         case NL80211_IFTYPE_ADHOC:
7565                 if (!wdev->ssid_len)
7566                         return -ENOTCONN;
7567                 break;
7568         case NL80211_IFTYPE_MESH_POINT:
7569                 if (!wdev->mesh_id_len)
7570                         return -ENOTCONN;
7571                 break;
7572         default:
7573                 return -EOPNOTSUPP;
7574         }
7575
7576         memset(&params, 0, sizeof(params));
7577
7578         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
7579             !info->attrs[NL80211_ATTR_CH_SWITCH_COUNT])
7580                 return -EINVAL;
7581
7582         /* only important for AP, IBSS and mesh create IEs internally */
7583         if (need_new_beacon && !info->attrs[NL80211_ATTR_CSA_IES])
7584                 return -EINVAL;
7585
7586         /* Even though the attribute is u32, the specification says
7587          * u8, so let's make sure we don't overflow.
7588          */
7589         cs_count = nla_get_u32(info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]);
7590         if (cs_count > 255)
7591                 return -EINVAL;
7592
7593         params.count = cs_count;
7594
7595         if (!need_new_beacon)
7596                 goto skip_beacons;
7597
7598         err = nl80211_parse_beacon(info->attrs, &params.beacon_after);
7599         if (err)
7600                 return err;
7601
7602         err = nla_parse_nested(csa_attrs, NL80211_ATTR_MAX,
7603                                info->attrs[NL80211_ATTR_CSA_IES],
7604                                nl80211_policy, info->extack);
7605         if (err)
7606                 return err;
7607
7608         err = nl80211_parse_beacon(csa_attrs, &params.beacon_csa);
7609         if (err)
7610                 return err;
7611
7612         if (!csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON])
7613                 return -EINVAL;
7614
7615         len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
7616         if (!len || (len % sizeof(u16)))
7617                 return -EINVAL;
7618
7619         params.n_counter_offsets_beacon = len / sizeof(u16);
7620         if (rdev->wiphy.max_num_csa_counters &&
7621             (params.n_counter_offsets_beacon >
7622              rdev->wiphy.max_num_csa_counters))
7623                 return -EINVAL;
7624
7625         params.counter_offsets_beacon =
7626                 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
7627
7628         /* sanity checks - counters should fit and be the same */
7629         for (i = 0; i < params.n_counter_offsets_beacon; i++) {
7630                 u16 offset = params.counter_offsets_beacon[i];
7631
7632                 if (offset >= params.beacon_csa.tail_len)
7633                         return -EINVAL;
7634
7635                 if (params.beacon_csa.tail[offset] != params.count)
7636                         return -EINVAL;
7637         }
7638
7639         if (csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]) {
7640                 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
7641                 if (!len || (len % sizeof(u16)))
7642                         return -EINVAL;
7643
7644                 params.n_counter_offsets_presp = len / sizeof(u16);
7645                 if (rdev->wiphy.max_num_csa_counters &&
7646                     (params.n_counter_offsets_presp >
7647                      rdev->wiphy.max_num_csa_counters))
7648                         return -EINVAL;
7649
7650                 params.counter_offsets_presp =
7651                         nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
7652
7653                 /* sanity checks - counters should fit and be the same */
7654                 for (i = 0; i < params.n_counter_offsets_presp; i++) {
7655                         u16 offset = params.counter_offsets_presp[i];
7656
7657                         if (offset >= params.beacon_csa.probe_resp_len)
7658                                 return -EINVAL;
7659
7660                         if (params.beacon_csa.probe_resp[offset] !=
7661                             params.count)
7662                                 return -EINVAL;
7663                 }
7664         }
7665
7666 skip_beacons:
7667         err = nl80211_parse_chandef(rdev, info, &params.chandef);
7668         if (err)
7669                 return err;
7670
7671         if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params.chandef,
7672                                            wdev->iftype))
7673                 return -EINVAL;
7674
7675         err = cfg80211_chandef_dfs_required(wdev->wiphy,
7676                                             &params.chandef,
7677                                             wdev->iftype);
7678         if (err < 0)
7679                 return err;
7680
7681         if (err > 0) {
7682                 params.radar_required = true;
7683                 if (need_handle_dfs_flag &&
7684                     !nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS])) {
7685                         return -EINVAL;
7686                 }
7687         }
7688
7689         if (info->attrs[NL80211_ATTR_CH_SWITCH_BLOCK_TX])
7690                 params.block_tx = true;
7691
7692         wdev_lock(wdev);
7693         err = rdev_channel_switch(rdev, dev, &params);
7694         wdev_unlock(wdev);
7695
7696         return err;
7697 }
7698
7699 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
7700                             u32 seq, int flags,
7701                             struct cfg80211_registered_device *rdev,
7702                             struct wireless_dev *wdev,
7703                             struct cfg80211_internal_bss *intbss)
7704 {
7705         struct cfg80211_bss *res = &intbss->pub;
7706         const struct cfg80211_bss_ies *ies;
7707         void *hdr;
7708         struct nlattr *bss;
7709
7710         ASSERT_WDEV_LOCK(wdev);
7711
7712         hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
7713                              NL80211_CMD_NEW_SCAN_RESULTS);
7714         if (!hdr)
7715                 return -1;
7716
7717         genl_dump_check_consistent(cb, hdr, &nl80211_fam);
7718
7719         if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation))
7720                 goto nla_put_failure;
7721         if (wdev->netdev &&
7722             nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex))
7723                 goto nla_put_failure;
7724         if (nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
7725                               NL80211_ATTR_PAD))
7726                 goto nla_put_failure;
7727
7728         bss = nla_nest_start(msg, NL80211_ATTR_BSS);
7729         if (!bss)
7730                 goto nla_put_failure;
7731         if ((!is_zero_ether_addr(res->bssid) &&
7732              nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid)))
7733                 goto nla_put_failure;
7734
7735         rcu_read_lock();
7736         /* indicate whether we have probe response data or not */
7737         if (rcu_access_pointer(res->proberesp_ies) &&
7738             nla_put_flag(msg, NL80211_BSS_PRESP_DATA))
7739                 goto fail_unlock_rcu;
7740
7741         /* this pointer prefers to be pointed to probe response data
7742          * but is always valid
7743          */
7744         ies = rcu_dereference(res->ies);
7745         if (ies) {
7746                 if (nla_put_u64_64bit(msg, NL80211_BSS_TSF, ies->tsf,
7747                                       NL80211_BSS_PAD))
7748                         goto fail_unlock_rcu;
7749                 if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS,
7750                                         ies->len, ies->data))
7751                         goto fail_unlock_rcu;
7752         }
7753
7754         /* and this pointer is always (unless driver didn't know) beacon data */
7755         ies = rcu_dereference(res->beacon_ies);
7756         if (ies && ies->from_beacon) {
7757                 if (nla_put_u64_64bit(msg, NL80211_BSS_BEACON_TSF, ies->tsf,
7758                                       NL80211_BSS_PAD))
7759                         goto fail_unlock_rcu;
7760                 if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES,
7761                                         ies->len, ies->data))
7762                         goto fail_unlock_rcu;
7763         }
7764         rcu_read_unlock();
7765
7766         if (res->beacon_interval &&
7767             nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval))
7768                 goto nla_put_failure;
7769         if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) ||
7770             nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) ||
7771             nla_put_u32(msg, NL80211_BSS_CHAN_WIDTH, res->scan_width) ||
7772             nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO,
7773                         jiffies_to_msecs(jiffies - intbss->ts)))
7774                 goto nla_put_failure;
7775
7776         if (intbss->parent_tsf &&
7777             (nla_put_u64_64bit(msg, NL80211_BSS_PARENT_TSF,
7778                                intbss->parent_tsf, NL80211_BSS_PAD) ||
7779              nla_put(msg, NL80211_BSS_PARENT_BSSID, ETH_ALEN,
7780                      intbss->parent_bssid)))
7781                 goto nla_put_failure;
7782
7783         if (intbss->ts_boottime &&
7784             nla_put_u64_64bit(msg, NL80211_BSS_LAST_SEEN_BOOTTIME,
7785                               intbss->ts_boottime, NL80211_BSS_PAD))
7786                 goto nla_put_failure;
7787
7788         switch (rdev->wiphy.signal_type) {
7789         case CFG80211_SIGNAL_TYPE_MBM:
7790                 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal))
7791                         goto nla_put_failure;
7792                 break;
7793         case CFG80211_SIGNAL_TYPE_UNSPEC:
7794                 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal))
7795                         goto nla_put_failure;
7796                 break;
7797         default:
7798                 break;
7799         }
7800
7801         switch (wdev->iftype) {
7802         case NL80211_IFTYPE_P2P_CLIENT:
7803         case NL80211_IFTYPE_STATION:
7804                 if (intbss == wdev->current_bss &&
7805                     nla_put_u32(msg, NL80211_BSS_STATUS,
7806                                 NL80211_BSS_STATUS_ASSOCIATED))
7807                         goto nla_put_failure;
7808                 break;
7809         case NL80211_IFTYPE_ADHOC:
7810                 if (intbss == wdev->current_bss &&
7811                     nla_put_u32(msg, NL80211_BSS_STATUS,
7812                                 NL80211_BSS_STATUS_IBSS_JOINED))
7813                         goto nla_put_failure;
7814                 break;
7815         default:
7816                 break;
7817         }
7818
7819         nla_nest_end(msg, bss);
7820
7821         genlmsg_end(msg, hdr);
7822         return 0;
7823
7824  fail_unlock_rcu:
7825         rcu_read_unlock();
7826  nla_put_failure:
7827         genlmsg_cancel(msg, hdr);
7828         return -EMSGSIZE;
7829 }
7830
7831 static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb)
7832 {
7833         struct cfg80211_registered_device *rdev;
7834         struct cfg80211_internal_bss *scan;
7835         struct wireless_dev *wdev;
7836         int start = cb->args[2], idx = 0;
7837         int err;
7838
7839         rtnl_lock();
7840         err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
7841         if (err) {
7842                 rtnl_unlock();
7843                 return err;
7844         }
7845
7846         wdev_lock(wdev);
7847         spin_lock_bh(&rdev->bss_lock);
7848         cfg80211_bss_expire(rdev);
7849
7850         cb->seq = rdev->bss_generation;
7851
7852         list_for_each_entry(scan, &rdev->bss_list, list) {
7853                 if (++idx <= start)
7854                         continue;
7855                 if (nl80211_send_bss(skb, cb,
7856                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
7857                                 rdev, wdev, scan) < 0) {
7858                         idx--;
7859                         break;
7860                 }
7861         }
7862
7863         spin_unlock_bh(&rdev->bss_lock);
7864         wdev_unlock(wdev);
7865
7866         cb->args[2] = idx;
7867         rtnl_unlock();
7868
7869         return skb->len;
7870 }
7871
7872 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq,
7873                                int flags, struct net_device *dev,
7874                                bool allow_radio_stats,
7875                                struct survey_info *survey)
7876 {
7877         void *hdr;
7878         struct nlattr *infoattr;
7879
7880         /* skip radio stats if userspace didn't request them */
7881         if (!survey->channel && !allow_radio_stats)
7882                 return 0;
7883
7884         hdr = nl80211hdr_put(msg, portid, seq, flags,
7885                              NL80211_CMD_NEW_SURVEY_RESULTS);
7886         if (!hdr)
7887                 return -ENOMEM;
7888
7889         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
7890                 goto nla_put_failure;
7891
7892         infoattr = nla_nest_start(msg, NL80211_ATTR_SURVEY_INFO);
7893         if (!infoattr)
7894                 goto nla_put_failure;
7895
7896         if (survey->channel &&
7897             nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY,
7898                         survey->channel->center_freq))
7899                 goto nla_put_failure;
7900
7901         if ((survey->filled & SURVEY_INFO_NOISE_DBM) &&
7902             nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise))
7903                 goto nla_put_failure;
7904         if ((survey->filled & SURVEY_INFO_IN_USE) &&
7905             nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE))
7906                 goto nla_put_failure;
7907         if ((survey->filled & SURVEY_INFO_TIME) &&
7908             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME,
7909                         survey->time, NL80211_SURVEY_INFO_PAD))
7910                 goto nla_put_failure;
7911         if ((survey->filled & SURVEY_INFO_TIME_BUSY) &&
7912             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_BUSY,
7913                               survey->time_busy, NL80211_SURVEY_INFO_PAD))
7914                 goto nla_put_failure;
7915         if ((survey->filled & SURVEY_INFO_TIME_EXT_BUSY) &&
7916             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_EXT_BUSY,
7917                               survey->time_ext_busy, NL80211_SURVEY_INFO_PAD))
7918                 goto nla_put_failure;
7919         if ((survey->filled & SURVEY_INFO_TIME_RX) &&
7920             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_RX,
7921                               survey->time_rx, NL80211_SURVEY_INFO_PAD))
7922                 goto nla_put_failure;
7923         if ((survey->filled & SURVEY_INFO_TIME_TX) &&
7924             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_TX,
7925                               survey->time_tx, NL80211_SURVEY_INFO_PAD))
7926                 goto nla_put_failure;
7927         if ((survey->filled & SURVEY_INFO_TIME_SCAN) &&
7928             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_SCAN,
7929                               survey->time_scan, NL80211_SURVEY_INFO_PAD))
7930                 goto nla_put_failure;
7931
7932         nla_nest_end(msg, infoattr);
7933
7934         genlmsg_end(msg, hdr);
7935         return 0;
7936
7937  nla_put_failure:
7938         genlmsg_cancel(msg, hdr);
7939         return -EMSGSIZE;
7940 }
7941
7942 static int nl80211_dump_survey(struct sk_buff *skb, struct netlink_callback *cb)
7943 {
7944         struct nlattr **attrbuf = genl_family_attrbuf(&nl80211_fam);
7945         struct survey_info survey;
7946         struct cfg80211_registered_device *rdev;
7947         struct wireless_dev *wdev;
7948         int survey_idx = cb->args[2];
7949         int res;
7950         bool radio_stats;
7951
7952         rtnl_lock();
7953         res = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
7954         if (res)
7955                 goto out_err;
7956
7957         /* prepare_wdev_dump parsed the attributes */
7958         radio_stats = attrbuf[NL80211_ATTR_SURVEY_RADIO_STATS];
7959
7960         if (!wdev->netdev) {
7961                 res = -EINVAL;
7962                 goto out_err;
7963         }
7964
7965         if (!rdev->ops->dump_survey) {
7966                 res = -EOPNOTSUPP;
7967                 goto out_err;
7968         }
7969
7970         while (1) {
7971                 res = rdev_dump_survey(rdev, wdev->netdev, survey_idx, &survey);
7972                 if (res == -ENOENT)
7973                         break;
7974                 if (res)
7975                         goto out_err;
7976
7977                 /* don't send disabled channels, but do send non-channel data */
7978                 if (survey.channel &&
7979                     survey.channel->flags & IEEE80211_CHAN_DISABLED) {
7980                         survey_idx++;
7981                         continue;
7982                 }
7983
7984                 if (nl80211_send_survey(skb,
7985                                 NETLINK_CB(cb->skb).portid,
7986                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
7987                                 wdev->netdev, radio_stats, &survey) < 0)
7988                         goto out;
7989                 survey_idx++;
7990         }
7991
7992  out:
7993         cb->args[2] = survey_idx;
7994         res = skb->len;
7995  out_err:
7996         rtnl_unlock();
7997         return res;
7998 }
7999
8000 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
8001 {
8002         return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
8003                                   NL80211_WPA_VERSION_2));
8004 }
8005
8006 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
8007 {
8008         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8009         struct net_device *dev = info->user_ptr[1];
8010         struct ieee80211_channel *chan;
8011         const u8 *bssid, *ssid, *ie = NULL, *auth_data = NULL;
8012         int err, ssid_len, ie_len = 0, auth_data_len = 0;
8013         enum nl80211_auth_type auth_type;
8014         struct key_parse key;
8015         bool local_state_change;
8016
8017         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8018                 return -EINVAL;
8019
8020         if (!info->attrs[NL80211_ATTR_MAC])
8021                 return -EINVAL;
8022
8023         if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
8024                 return -EINVAL;
8025
8026         if (!info->attrs[NL80211_ATTR_SSID])
8027                 return -EINVAL;
8028
8029         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
8030                 return -EINVAL;
8031
8032         err = nl80211_parse_key(info, &key);
8033         if (err)
8034                 return err;
8035
8036         if (key.idx >= 0) {
8037                 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
8038                         return -EINVAL;
8039                 if (!key.p.key || !key.p.key_len)
8040                         return -EINVAL;
8041                 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
8042                      key.p.key_len != WLAN_KEY_LEN_WEP40) &&
8043                     (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
8044                      key.p.key_len != WLAN_KEY_LEN_WEP104))
8045                         return -EINVAL;
8046                 if (key.idx > 3)
8047                         return -EINVAL;
8048         } else {
8049                 key.p.key_len = 0;
8050                 key.p.key = NULL;
8051         }
8052
8053         if (key.idx >= 0) {
8054                 int i;
8055                 bool ok = false;
8056
8057                 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
8058                         if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
8059                                 ok = true;
8060                                 break;
8061                         }
8062                 }
8063                 if (!ok)
8064                         return -EINVAL;
8065         }
8066
8067         if (!rdev->ops->auth)
8068                 return -EOPNOTSUPP;
8069
8070         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8071             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8072                 return -EOPNOTSUPP;
8073
8074         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8075         chan = nl80211_get_valid_chan(&rdev->wiphy,
8076                                       info->attrs[NL80211_ATTR_WIPHY_FREQ]);
8077         if (!chan)
8078                 return -EINVAL;
8079
8080         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
8081         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
8082
8083         if (info->attrs[NL80211_ATTR_IE]) {
8084                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8085                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8086         }
8087
8088         auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
8089         if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE))
8090                 return -EINVAL;
8091
8092         if ((auth_type == NL80211_AUTHTYPE_SAE ||
8093              auth_type == NL80211_AUTHTYPE_FILS_SK ||
8094              auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
8095              auth_type == NL80211_AUTHTYPE_FILS_PK) &&
8096             !info->attrs[NL80211_ATTR_AUTH_DATA])
8097                 return -EINVAL;
8098
8099         if (info->attrs[NL80211_ATTR_AUTH_DATA]) {
8100                 if (auth_type != NL80211_AUTHTYPE_SAE &&
8101                     auth_type != NL80211_AUTHTYPE_FILS_SK &&
8102                     auth_type != NL80211_AUTHTYPE_FILS_SK_PFS &&
8103                     auth_type != NL80211_AUTHTYPE_FILS_PK)
8104                         return -EINVAL;
8105                 auth_data = nla_data(info->attrs[NL80211_ATTR_AUTH_DATA]);
8106                 auth_data_len = nla_len(info->attrs[NL80211_ATTR_AUTH_DATA]);
8107                 /* need to include at least Auth Transaction and Status Code */
8108                 if (auth_data_len < 4)
8109                         return -EINVAL;
8110         }
8111
8112         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
8113
8114         /*
8115          * Since we no longer track auth state, ignore
8116          * requests to only change local state.
8117          */
8118         if (local_state_change)
8119                 return 0;
8120
8121         wdev_lock(dev->ieee80211_ptr);
8122         err = cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
8123                                  ssid, ssid_len, ie, ie_len,
8124                                  key.p.key, key.p.key_len, key.idx,
8125                                  auth_data, auth_data_len);
8126         wdev_unlock(dev->ieee80211_ptr);
8127         return err;
8128 }
8129
8130 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
8131                                    struct genl_info *info,
8132                                    struct cfg80211_crypto_settings *settings,
8133                                    int cipher_limit)
8134 {
8135         memset(settings, 0, sizeof(*settings));
8136
8137         settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
8138
8139         if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
8140                 u16 proto;
8141
8142                 proto = nla_get_u16(
8143                         info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
8144                 settings->control_port_ethertype = cpu_to_be16(proto);
8145                 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
8146                     proto != ETH_P_PAE)
8147                         return -EINVAL;
8148                 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
8149                         settings->control_port_no_encrypt = true;
8150         } else
8151                 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
8152
8153         if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
8154                 void *data;
8155                 int len, i;
8156
8157                 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
8158                 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
8159                 settings->n_ciphers_pairwise = len / sizeof(u32);
8160
8161                 if (len % sizeof(u32))
8162                         return -EINVAL;
8163
8164                 if (settings->n_ciphers_pairwise > cipher_limit)
8165                         return -EINVAL;
8166
8167                 memcpy(settings->ciphers_pairwise, data, len);
8168
8169                 for (i = 0; i < settings->n_ciphers_pairwise; i++)
8170                         if (!cfg80211_supported_cipher_suite(
8171                                         &rdev->wiphy,
8172                                         settings->ciphers_pairwise[i]))
8173                                 return -EINVAL;
8174         }
8175
8176         if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
8177                 settings->cipher_group =
8178                         nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
8179                 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
8180                                                      settings->cipher_group))
8181                         return -EINVAL;
8182         }
8183
8184         if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
8185                 settings->wpa_versions =
8186                         nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
8187                 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
8188                         return -EINVAL;
8189         }
8190
8191         if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
8192                 void *data;
8193                 int len;
8194
8195                 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
8196                 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
8197                 settings->n_akm_suites = len / sizeof(u32);
8198
8199                 if (len % sizeof(u32))
8200                         return -EINVAL;
8201
8202                 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES)
8203                         return -EINVAL;
8204
8205                 memcpy(settings->akm_suites, data, len);
8206         }
8207
8208         if (info->attrs[NL80211_ATTR_PMK]) {
8209                 if (nla_len(info->attrs[NL80211_ATTR_PMK]) != WLAN_PMK_LEN)
8210                         return -EINVAL;
8211                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
8212                                              NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_PSK))
8213                         return -EINVAL;
8214                 settings->psk = nla_data(info->attrs[NL80211_ATTR_PMK]);
8215         }
8216
8217         return 0;
8218 }
8219
8220 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
8221 {
8222         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8223         struct net_device *dev = info->user_ptr[1];
8224         struct ieee80211_channel *chan;
8225         struct cfg80211_assoc_request req = {};
8226         const u8 *bssid, *ssid;
8227         int err, ssid_len = 0;
8228
8229         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8230                 return -EINVAL;
8231
8232         if (!info->attrs[NL80211_ATTR_MAC] ||
8233             !info->attrs[NL80211_ATTR_SSID] ||
8234             !info->attrs[NL80211_ATTR_WIPHY_FREQ])
8235                 return -EINVAL;
8236
8237         if (!rdev->ops->assoc)
8238                 return -EOPNOTSUPP;
8239
8240         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8241             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8242                 return -EOPNOTSUPP;
8243
8244         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8245
8246         chan = nl80211_get_valid_chan(&rdev->wiphy,
8247                                       info->attrs[NL80211_ATTR_WIPHY_FREQ]);
8248         if (!chan)
8249                 return -EINVAL;
8250
8251         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
8252         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
8253
8254         if (info->attrs[NL80211_ATTR_IE]) {
8255                 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8256                 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8257         }
8258
8259         if (info->attrs[NL80211_ATTR_USE_MFP]) {
8260                 enum nl80211_mfp mfp =
8261                         nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
8262                 if (mfp == NL80211_MFP_REQUIRED)
8263                         req.use_mfp = true;
8264                 else if (mfp != NL80211_MFP_NO)
8265                         return -EINVAL;
8266         }
8267
8268         if (info->attrs[NL80211_ATTR_PREV_BSSID])
8269                 req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
8270
8271         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
8272                 req.flags |= ASSOC_REQ_DISABLE_HT;
8273
8274         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
8275                 memcpy(&req.ht_capa_mask,
8276                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
8277                        sizeof(req.ht_capa_mask));
8278
8279         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
8280                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
8281                         return -EINVAL;
8282                 memcpy(&req.ht_capa,
8283                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
8284                        sizeof(req.ht_capa));
8285         }
8286
8287         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
8288                 req.flags |= ASSOC_REQ_DISABLE_VHT;
8289
8290         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
8291                 memcpy(&req.vht_capa_mask,
8292                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
8293                        sizeof(req.vht_capa_mask));
8294
8295         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
8296                 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
8297                         return -EINVAL;
8298                 memcpy(&req.vht_capa,
8299                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
8300                        sizeof(req.vht_capa));
8301         }
8302
8303         if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
8304                 if (!((rdev->wiphy.features &
8305                         NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
8306                        (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
8307                     !wiphy_ext_feature_isset(&rdev->wiphy,
8308                                              NL80211_EXT_FEATURE_RRM))
8309                         return -EINVAL;
8310                 req.flags |= ASSOC_REQ_USE_RRM;
8311         }
8312
8313         if (info->attrs[NL80211_ATTR_FILS_KEK]) {
8314                 req.fils_kek = nla_data(info->attrs[NL80211_ATTR_FILS_KEK]);
8315                 req.fils_kek_len = nla_len(info->attrs[NL80211_ATTR_FILS_KEK]);
8316                 if (!info->attrs[NL80211_ATTR_FILS_NONCES])
8317                         return -EINVAL;
8318                 req.fils_nonces =
8319                         nla_data(info->attrs[NL80211_ATTR_FILS_NONCES]);
8320         }
8321
8322         err = nl80211_crypto_settings(rdev, info, &req.crypto, 1);
8323         if (!err) {
8324                 wdev_lock(dev->ieee80211_ptr);
8325
8326                 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid,
8327                                           ssid, ssid_len, &req);
8328
8329                 if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
8330                         dev->ieee80211_ptr->conn_owner_nlportid =
8331                                 info->snd_portid;
8332                         memcpy(dev->ieee80211_ptr->disconnect_bssid,
8333                                bssid, ETH_ALEN);
8334                 }
8335
8336                 wdev_unlock(dev->ieee80211_ptr);
8337         }
8338
8339         return err;
8340 }
8341
8342 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
8343 {
8344         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8345         struct net_device *dev = info->user_ptr[1];
8346         const u8 *ie = NULL, *bssid;
8347         int ie_len = 0, err;
8348         u16 reason_code;
8349         bool local_state_change;
8350
8351         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8352                 return -EINVAL;
8353
8354         if (!info->attrs[NL80211_ATTR_MAC])
8355                 return -EINVAL;
8356
8357         if (!info->attrs[NL80211_ATTR_REASON_CODE])
8358                 return -EINVAL;
8359
8360         if (!rdev->ops->deauth)
8361                 return -EOPNOTSUPP;
8362
8363         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8364             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8365                 return -EOPNOTSUPP;
8366
8367         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8368
8369         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
8370         if (reason_code == 0) {
8371                 /* Reason Code 0 is reserved */
8372                 return -EINVAL;
8373         }
8374
8375         if (info->attrs[NL80211_ATTR_IE]) {
8376                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8377                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8378         }
8379
8380         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
8381
8382         wdev_lock(dev->ieee80211_ptr);
8383         err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
8384                                    local_state_change);
8385         wdev_unlock(dev->ieee80211_ptr);
8386         return err;
8387 }
8388
8389 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
8390 {
8391         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8392         struct net_device *dev = info->user_ptr[1];
8393         const u8 *ie = NULL, *bssid;
8394         int ie_len = 0, err;
8395         u16 reason_code;
8396         bool local_state_change;
8397
8398         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8399                 return -EINVAL;
8400
8401         if (!info->attrs[NL80211_ATTR_MAC])
8402                 return -EINVAL;
8403
8404         if (!info->attrs[NL80211_ATTR_REASON_CODE])
8405                 return -EINVAL;
8406
8407         if (!rdev->ops->disassoc)
8408                 return -EOPNOTSUPP;
8409
8410         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8411             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8412                 return -EOPNOTSUPP;
8413
8414         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8415
8416         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
8417         if (reason_code == 0) {
8418                 /* Reason Code 0 is reserved */
8419                 return -EINVAL;
8420         }
8421
8422         if (info->attrs[NL80211_ATTR_IE]) {
8423                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8424                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8425         }
8426
8427         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
8428
8429         wdev_lock(dev->ieee80211_ptr);
8430         err = cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
8431                                      local_state_change);
8432         wdev_unlock(dev->ieee80211_ptr);
8433         return err;
8434 }
8435
8436 static bool
8437 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
8438                          int mcast_rate[NUM_NL80211_BANDS],
8439                          int rateval)
8440 {
8441         struct wiphy *wiphy = &rdev->wiphy;
8442         bool found = false;
8443         int band, i;
8444
8445         for (band = 0; band < NUM_NL80211_BANDS; band++) {
8446                 struct ieee80211_supported_band *sband;
8447
8448                 sband = wiphy->bands[band];
8449                 if (!sband)
8450                         continue;
8451
8452                 for (i = 0; i < sband->n_bitrates; i++) {
8453                         if (sband->bitrates[i].bitrate == rateval) {
8454                                 mcast_rate[band] = i + 1;
8455                                 found = true;
8456                                 break;
8457                         }
8458                 }
8459         }
8460
8461         return found;
8462 }
8463
8464 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
8465 {
8466         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8467         struct net_device *dev = info->user_ptr[1];
8468         struct cfg80211_ibss_params ibss;
8469         struct wiphy *wiphy;
8470         struct cfg80211_cached_keys *connkeys = NULL;
8471         int err;
8472
8473         memset(&ibss, 0, sizeof(ibss));
8474
8475         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8476                 return -EINVAL;
8477
8478         if (!info->attrs[NL80211_ATTR_SSID] ||
8479             !nla_len(info->attrs[NL80211_ATTR_SSID]))
8480                 return -EINVAL;
8481
8482         ibss.beacon_interval = 100;
8483
8484         if (info->attrs[NL80211_ATTR_BEACON_INTERVAL])
8485                 ibss.beacon_interval =
8486                         nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
8487
8488         err = cfg80211_validate_beacon_int(rdev, NL80211_IFTYPE_ADHOC,
8489                                            ibss.beacon_interval);
8490         if (err)
8491                 return err;
8492
8493         if (!rdev->ops->join_ibss)
8494                 return -EOPNOTSUPP;
8495
8496         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
8497                 return -EOPNOTSUPP;
8498
8499         wiphy = &rdev->wiphy;
8500
8501         if (info->attrs[NL80211_ATTR_MAC]) {
8502                 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8503
8504                 if (!is_valid_ether_addr(ibss.bssid))
8505                         return -EINVAL;
8506         }
8507         ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
8508         ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
8509
8510         if (info->attrs[NL80211_ATTR_IE]) {
8511                 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8512                 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8513         }
8514
8515         err = nl80211_parse_chandef(rdev, info, &ibss.chandef);
8516         if (err)
8517                 return err;
8518
8519         if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef,
8520                                      NL80211_IFTYPE_ADHOC))
8521                 return -EINVAL;
8522
8523         switch (ibss.chandef.width) {
8524         case NL80211_CHAN_WIDTH_5:
8525         case NL80211_CHAN_WIDTH_10:
8526         case NL80211_CHAN_WIDTH_20_NOHT:
8527                 break;
8528         case NL80211_CHAN_WIDTH_20:
8529         case NL80211_CHAN_WIDTH_40:
8530                 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
8531                         return -EINVAL;
8532                 break;
8533         case NL80211_CHAN_WIDTH_80:
8534         case NL80211_CHAN_WIDTH_80P80:
8535         case NL80211_CHAN_WIDTH_160:
8536                 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
8537                         return -EINVAL;
8538                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
8539                                              NL80211_EXT_FEATURE_VHT_IBSS))
8540                         return -EINVAL;
8541                 break;
8542         default:
8543                 return -EINVAL;
8544         }
8545
8546         ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
8547         ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
8548
8549         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
8550                 u8 *rates =
8551                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
8552                 int n_rates =
8553                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
8554                 struct ieee80211_supported_band *sband =
8555                         wiphy->bands[ibss.chandef.chan->band];
8556
8557                 err = ieee80211_get_ratemask(sband, rates, n_rates,
8558                                              &ibss.basic_rates);
8559                 if (err)
8560                         return err;
8561         }
8562
8563         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
8564                 memcpy(&ibss.ht_capa_mask,
8565                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
8566                        sizeof(ibss.ht_capa_mask));
8567
8568         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
8569                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
8570                         return -EINVAL;
8571                 memcpy(&ibss.ht_capa,
8572                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
8573                        sizeof(ibss.ht_capa));
8574         }
8575
8576         if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
8577             !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
8578                         nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
8579                 return -EINVAL;
8580
8581         if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
8582                 bool no_ht = false;
8583
8584                 connkeys = nl80211_parse_connkeys(rdev,
8585                                           info->attrs[NL80211_ATTR_KEYS],
8586                                           &no_ht);
8587                 if (IS_ERR(connkeys))
8588                         return PTR_ERR(connkeys);
8589
8590                 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) &&
8591                     no_ht) {
8592                         kzfree(connkeys);
8593                         return -EINVAL;
8594                 }
8595         }
8596
8597         ibss.control_port =
8598                 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]);
8599
8600         ibss.userspace_handles_dfs =
8601                 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
8602
8603         err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
8604         if (err)
8605                 kzfree(connkeys);
8606         return err;
8607 }
8608
8609 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
8610 {
8611         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8612         struct net_device *dev = info->user_ptr[1];
8613
8614         if (!rdev->ops->leave_ibss)
8615                 return -EOPNOTSUPP;
8616
8617         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
8618                 return -EOPNOTSUPP;
8619
8620         return cfg80211_leave_ibss(rdev, dev, false);
8621 }
8622
8623 static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info)
8624 {
8625         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8626         struct net_device *dev = info->user_ptr[1];
8627         int mcast_rate[NUM_NL80211_BANDS];
8628         u32 nla_rate;
8629         int err;
8630
8631         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
8632             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
8633             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_OCB)
8634                 return -EOPNOTSUPP;
8635
8636         if (!rdev->ops->set_mcast_rate)
8637                 return -EOPNOTSUPP;
8638
8639         memset(mcast_rate, 0, sizeof(mcast_rate));
8640
8641         if (!info->attrs[NL80211_ATTR_MCAST_RATE])
8642                 return -EINVAL;
8643
8644         nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]);
8645         if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate))
8646                 return -EINVAL;
8647
8648         err = rdev_set_mcast_rate(rdev, dev, mcast_rate);
8649
8650         return err;
8651 }
8652
8653 static struct sk_buff *
8654 __cfg80211_alloc_vendor_skb(struct cfg80211_registered_device *rdev,
8655                             struct wireless_dev *wdev, int approxlen,
8656                             u32 portid, u32 seq, enum nl80211_commands cmd,
8657                             enum nl80211_attrs attr,
8658                             const struct nl80211_vendor_cmd_info *info,
8659                             gfp_t gfp)
8660 {
8661         struct sk_buff *skb;
8662         void *hdr;
8663         struct nlattr *data;
8664
8665         skb = nlmsg_new(approxlen + 100, gfp);
8666         if (!skb)
8667                 return NULL;
8668
8669         hdr = nl80211hdr_put(skb, portid, seq, 0, cmd);
8670         if (!hdr) {
8671                 kfree_skb(skb);
8672                 return NULL;
8673         }
8674
8675         if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
8676                 goto nla_put_failure;
8677
8678         if (info) {
8679                 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_ID,
8680                                 info->vendor_id))
8681                         goto nla_put_failure;
8682                 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_SUBCMD,
8683                                 info->subcmd))
8684                         goto nla_put_failure;
8685         }
8686
8687         if (wdev) {
8688                 if (nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
8689                                       wdev_id(wdev), NL80211_ATTR_PAD))
8690                         goto nla_put_failure;
8691                 if (wdev->netdev &&
8692                     nla_put_u32(skb, NL80211_ATTR_IFINDEX,
8693                                 wdev->netdev->ifindex))
8694                         goto nla_put_failure;
8695         }
8696
8697         data = nla_nest_start(skb, attr);
8698         if (!data)
8699                 goto nla_put_failure;
8700
8701         ((void **)skb->cb)[0] = rdev;
8702         ((void **)skb->cb)[1] = hdr;
8703         ((void **)skb->cb)[2] = data;
8704
8705         return skb;
8706
8707  nla_put_failure:
8708         kfree_skb(skb);
8709         return NULL;
8710 }
8711
8712 struct sk_buff *__cfg80211_alloc_event_skb(struct wiphy *wiphy,
8713                                            struct wireless_dev *wdev,
8714                                            enum nl80211_commands cmd,
8715                                            enum nl80211_attrs attr,
8716                                            int vendor_event_idx,
8717                                            int approxlen, gfp_t gfp)
8718 {
8719         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
8720         const struct nl80211_vendor_cmd_info *info;
8721
8722         switch (cmd) {
8723         case NL80211_CMD_TESTMODE:
8724                 if (WARN_ON(vendor_event_idx != -1))
8725                         return NULL;
8726                 info = NULL;
8727                 break;
8728         case NL80211_CMD_VENDOR:
8729                 if (WARN_ON(vendor_event_idx < 0 ||
8730                             vendor_event_idx >= wiphy->n_vendor_events))
8731                         return NULL;
8732                 info = &wiphy->vendor_events[vendor_event_idx];
8733                 break;
8734         default:
8735                 WARN_ON(1);
8736                 return NULL;
8737         }
8738
8739         return __cfg80211_alloc_vendor_skb(rdev, wdev, approxlen, 0, 0,
8740                                            cmd, attr, info, gfp);
8741 }
8742 EXPORT_SYMBOL(__cfg80211_alloc_event_skb);
8743
8744 void __cfg80211_send_event_skb(struct sk_buff *skb, gfp_t gfp)
8745 {
8746         struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
8747         void *hdr = ((void **)skb->cb)[1];
8748         struct nlattr *data = ((void **)skb->cb)[2];
8749         enum nl80211_multicast_groups mcgrp = NL80211_MCGRP_TESTMODE;
8750
8751         /* clear CB data for netlink core to own from now on */
8752         memset(skb->cb, 0, sizeof(skb->cb));
8753
8754         nla_nest_end(skb, data);
8755         genlmsg_end(skb, hdr);
8756
8757         if (data->nla_type == NL80211_ATTR_VENDOR_DATA)
8758                 mcgrp = NL80211_MCGRP_VENDOR;
8759
8760         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), skb, 0,
8761                                 mcgrp, gfp);
8762 }
8763 EXPORT_SYMBOL(__cfg80211_send_event_skb);
8764
8765 #ifdef CONFIG_NL80211_TESTMODE
8766 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
8767 {
8768         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8769         struct wireless_dev *wdev =
8770                 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
8771         int err;
8772
8773         if (!rdev->ops->testmode_cmd)
8774                 return -EOPNOTSUPP;
8775
8776         if (IS_ERR(wdev)) {
8777                 err = PTR_ERR(wdev);
8778                 if (err != -EINVAL)
8779                         return err;
8780                 wdev = NULL;
8781         } else if (wdev->wiphy != &rdev->wiphy) {
8782                 return -EINVAL;
8783         }
8784
8785         if (!info->attrs[NL80211_ATTR_TESTDATA])
8786                 return -EINVAL;
8787
8788         rdev->cur_cmd_info = info;
8789         err = rdev_testmode_cmd(rdev, wdev,
8790                                 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
8791                                 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
8792         rdev->cur_cmd_info = NULL;
8793
8794         return err;
8795 }
8796
8797 static int nl80211_testmode_dump(struct sk_buff *skb,
8798                                  struct netlink_callback *cb)
8799 {
8800         struct cfg80211_registered_device *rdev;
8801         int err;
8802         long phy_idx;
8803         void *data = NULL;
8804         int data_len = 0;
8805
8806         rtnl_lock();
8807
8808         if (cb->args[0]) {
8809                 /*
8810                  * 0 is a valid index, but not valid for args[0],
8811                  * so we need to offset by 1.
8812                  */
8813                 phy_idx = cb->args[0] - 1;
8814
8815                 rdev = cfg80211_rdev_by_wiphy_idx(phy_idx);
8816                 if (!rdev) {
8817                         err = -ENOENT;
8818                         goto out_err;
8819                 }
8820         } else {
8821                 struct nlattr **attrbuf = genl_family_attrbuf(&nl80211_fam);
8822
8823                 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
8824                                   attrbuf, nl80211_fam.maxattr,
8825                                   nl80211_policy, NULL);
8826                 if (err)
8827                         goto out_err;
8828
8829                 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf);
8830                 if (IS_ERR(rdev)) {
8831                         err = PTR_ERR(rdev);
8832                         goto out_err;
8833                 }
8834                 phy_idx = rdev->wiphy_idx;
8835
8836                 if (attrbuf[NL80211_ATTR_TESTDATA])
8837                         cb->args[1] = (long)attrbuf[NL80211_ATTR_TESTDATA];
8838         }
8839
8840         if (cb->args[1]) {
8841                 data = nla_data((void *)cb->args[1]);
8842                 data_len = nla_len((void *)cb->args[1]);
8843         }
8844
8845         if (!rdev->ops->testmode_dump) {
8846                 err = -EOPNOTSUPP;
8847                 goto out_err;
8848         }
8849
8850         while (1) {
8851                 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
8852                                            cb->nlh->nlmsg_seq, NLM_F_MULTI,
8853                                            NL80211_CMD_TESTMODE);
8854                 struct nlattr *tmdata;
8855
8856                 if (!hdr)
8857                         break;
8858
8859                 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) {
8860                         genlmsg_cancel(skb, hdr);
8861                         break;
8862                 }
8863
8864                 tmdata = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
8865                 if (!tmdata) {
8866                         genlmsg_cancel(skb, hdr);
8867                         break;
8868                 }
8869                 err = rdev_testmode_dump(rdev, skb, cb, data, data_len);
8870                 nla_nest_end(skb, tmdata);
8871
8872                 if (err == -ENOBUFS || err == -ENOENT) {
8873                         genlmsg_cancel(skb, hdr);
8874                         break;
8875                 } else if (err) {
8876                         genlmsg_cancel(skb, hdr);
8877                         goto out_err;
8878                 }
8879
8880                 genlmsg_end(skb, hdr);
8881         }
8882
8883         err = skb->len;
8884         /* see above */
8885         cb->args[0] = phy_idx + 1;
8886  out_err:
8887         rtnl_unlock();
8888         return err;
8889 }
8890 #endif
8891
8892 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
8893 {
8894         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8895         struct net_device *dev = info->user_ptr[1];
8896         struct cfg80211_connect_params connect;
8897         struct wiphy *wiphy;
8898         struct cfg80211_cached_keys *connkeys = NULL;
8899         int err;
8900
8901         memset(&connect, 0, sizeof(connect));
8902
8903         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8904                 return -EINVAL;
8905
8906         if (!info->attrs[NL80211_ATTR_SSID] ||
8907             !nla_len(info->attrs[NL80211_ATTR_SSID]))
8908                 return -EINVAL;
8909
8910         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
8911                 connect.auth_type =
8912                         nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
8913                 if (!nl80211_valid_auth_type(rdev, connect.auth_type,
8914                                              NL80211_CMD_CONNECT))
8915                         return -EINVAL;
8916         } else
8917                 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
8918
8919         connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
8920
8921         if (info->attrs[NL80211_ATTR_WANT_1X_4WAY_HS] &&
8922             !wiphy_ext_feature_isset(&rdev->wiphy,
8923                                      NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
8924                 return -EINVAL;
8925         connect.want_1x = info->attrs[NL80211_ATTR_WANT_1X_4WAY_HS];
8926
8927         err = nl80211_crypto_settings(rdev, info, &connect.crypto,
8928                                       NL80211_MAX_NR_CIPHER_SUITES);
8929         if (err)
8930                 return err;
8931
8932         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8933             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8934                 return -EOPNOTSUPP;
8935
8936         wiphy = &rdev->wiphy;
8937
8938         connect.bg_scan_period = -1;
8939         if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] &&
8940                 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) {
8941                 connect.bg_scan_period =
8942                         nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]);
8943         }
8944
8945         if (info->attrs[NL80211_ATTR_MAC])
8946                 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8947         else if (info->attrs[NL80211_ATTR_MAC_HINT])
8948                 connect.bssid_hint =
8949                         nla_data(info->attrs[NL80211_ATTR_MAC_HINT]);
8950         connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
8951         connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
8952
8953         if (info->attrs[NL80211_ATTR_IE]) {
8954                 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8955                 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8956         }
8957
8958         if (info->attrs[NL80211_ATTR_USE_MFP]) {
8959                 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
8960                 if (connect.mfp == NL80211_MFP_OPTIONAL &&
8961                     !wiphy_ext_feature_isset(&rdev->wiphy,
8962                                              NL80211_EXT_FEATURE_MFP_OPTIONAL))
8963                         return -EOPNOTSUPP;
8964
8965                 if (connect.mfp != NL80211_MFP_REQUIRED &&
8966                     connect.mfp != NL80211_MFP_NO &&
8967                     connect.mfp != NL80211_MFP_OPTIONAL)
8968                         return -EINVAL;
8969         } else {
8970                 connect.mfp = NL80211_MFP_NO;
8971         }
8972
8973         if (info->attrs[NL80211_ATTR_PREV_BSSID])
8974                 connect.prev_bssid =
8975                         nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
8976
8977         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
8978                 connect.channel = nl80211_get_valid_chan(
8979                         wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ]);
8980                 if (!connect.channel)
8981                         return -EINVAL;
8982         } else if (info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]) {
8983                 connect.channel_hint = nl80211_get_valid_chan(
8984                         wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]);
8985                 if (!connect.channel_hint)
8986                         return -EINVAL;
8987         }
8988
8989         if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
8990                 connkeys = nl80211_parse_connkeys(rdev,
8991                                           info->attrs[NL80211_ATTR_KEYS], NULL);
8992                 if (IS_ERR(connkeys))
8993                         return PTR_ERR(connkeys);
8994         }
8995
8996         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
8997                 connect.flags |= ASSOC_REQ_DISABLE_HT;
8998
8999         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
9000                 memcpy(&connect.ht_capa_mask,
9001                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
9002                        sizeof(connect.ht_capa_mask));
9003
9004         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
9005                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) {
9006                         kzfree(connkeys);
9007                         return -EINVAL;
9008                 }
9009                 memcpy(&connect.ht_capa,
9010                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
9011                        sizeof(connect.ht_capa));
9012         }
9013
9014         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
9015                 connect.flags |= ASSOC_REQ_DISABLE_VHT;
9016
9017         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
9018                 memcpy(&connect.vht_capa_mask,
9019                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
9020                        sizeof(connect.vht_capa_mask));
9021
9022         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
9023                 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) {
9024                         kzfree(connkeys);
9025                         return -EINVAL;
9026                 }
9027                 memcpy(&connect.vht_capa,
9028                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
9029                        sizeof(connect.vht_capa));
9030         }
9031
9032         if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
9033                 if (!((rdev->wiphy.features &
9034                         NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
9035                        (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
9036                     !wiphy_ext_feature_isset(&rdev->wiphy,
9037                                              NL80211_EXT_FEATURE_RRM)) {
9038                         kzfree(connkeys);
9039                         return -EINVAL;
9040                 }
9041                 connect.flags |= ASSOC_REQ_USE_RRM;
9042         }
9043
9044         connect.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
9045         if (connect.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ]) {
9046                 kzfree(connkeys);
9047                 return -EOPNOTSUPP;
9048         }
9049
9050         if (info->attrs[NL80211_ATTR_BSS_SELECT]) {
9051                 /* bss selection makes no sense if bssid is set */
9052                 if (connect.bssid) {
9053                         kzfree(connkeys);
9054                         return -EINVAL;
9055                 }
9056
9057                 err = parse_bss_select(info->attrs[NL80211_ATTR_BSS_SELECT],
9058                                        wiphy, &connect.bss_select);
9059                 if (err) {
9060                         kzfree(connkeys);
9061                         return err;
9062                 }
9063         }
9064
9065         if (wiphy_ext_feature_isset(&rdev->wiphy,
9066                                     NL80211_EXT_FEATURE_FILS_SK_OFFLOAD) &&
9067             info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] &&
9068             info->attrs[NL80211_ATTR_FILS_ERP_REALM] &&
9069             info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] &&
9070             info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
9071                 connect.fils_erp_username =
9072                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
9073                 connect.fils_erp_username_len =
9074                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
9075                 connect.fils_erp_realm =
9076                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
9077                 connect.fils_erp_realm_len =
9078                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
9079                 connect.fils_erp_next_seq_num =
9080                         nla_get_u16(
9081                            info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM]);
9082                 connect.fils_erp_rrk =
9083                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
9084                 connect.fils_erp_rrk_len =
9085                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
9086         } else if (info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] ||
9087                    info->attrs[NL80211_ATTR_FILS_ERP_REALM] ||
9088                    info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] ||
9089                    info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
9090                 kzfree(connkeys);
9091                 return -EINVAL;
9092         }
9093
9094         wdev_lock(dev->ieee80211_ptr);
9095
9096         err = cfg80211_connect(rdev, dev, &connect, connkeys,
9097                                connect.prev_bssid);
9098         if (err)
9099                 kzfree(connkeys);
9100
9101         if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
9102                 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
9103                 if (connect.bssid)
9104                         memcpy(dev->ieee80211_ptr->disconnect_bssid,
9105                                connect.bssid, ETH_ALEN);
9106                 else
9107                         memset(dev->ieee80211_ptr->disconnect_bssid,
9108                                0, ETH_ALEN);
9109         }
9110
9111         wdev_unlock(dev->ieee80211_ptr);
9112
9113         return err;
9114 }
9115
9116 static int nl80211_update_connect_params(struct sk_buff *skb,
9117                                          struct genl_info *info)
9118 {
9119         struct cfg80211_connect_params connect = {};
9120         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9121         struct net_device *dev = info->user_ptr[1];
9122         struct wireless_dev *wdev = dev->ieee80211_ptr;
9123         u32 changed = 0;
9124         int ret;
9125
9126         if (!rdev->ops->update_connect_params)
9127                 return -EOPNOTSUPP;
9128
9129         if (info->attrs[NL80211_ATTR_IE]) {
9130                 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
9131                         return -EINVAL;
9132                 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9133                 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9134                 changed |= UPDATE_ASSOC_IES;
9135         }
9136
9137         wdev_lock(dev->ieee80211_ptr);
9138         if (!wdev->current_bss)
9139                 ret = -ENOLINK;
9140         else
9141                 ret = rdev_update_connect_params(rdev, dev, &connect, changed);
9142         wdev_unlock(dev->ieee80211_ptr);
9143
9144         return ret;
9145 }
9146
9147 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
9148 {
9149         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9150         struct net_device *dev = info->user_ptr[1];
9151         u16 reason;
9152         int ret;
9153
9154         if (!info->attrs[NL80211_ATTR_REASON_CODE])
9155                 reason = WLAN_REASON_DEAUTH_LEAVING;
9156         else
9157                 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
9158
9159         if (reason == 0)
9160                 return -EINVAL;
9161
9162         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9163             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9164                 return -EOPNOTSUPP;
9165
9166         wdev_lock(dev->ieee80211_ptr);
9167         ret = cfg80211_disconnect(rdev, dev, reason, true);
9168         wdev_unlock(dev->ieee80211_ptr);
9169         return ret;
9170 }
9171
9172 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
9173 {
9174         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9175         struct net *net;
9176         int err;
9177
9178         if (info->attrs[NL80211_ATTR_PID]) {
9179                 u32 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
9180
9181                 net = get_net_ns_by_pid(pid);
9182         } else if (info->attrs[NL80211_ATTR_NETNS_FD]) {
9183                 u32 fd = nla_get_u32(info->attrs[NL80211_ATTR_NETNS_FD]);
9184
9185                 net = get_net_ns_by_fd(fd);
9186         } else {
9187                 return -EINVAL;
9188         }
9189
9190         if (IS_ERR(net))
9191                 return PTR_ERR(net);
9192
9193         err = 0;
9194
9195         /* check if anything to do */
9196         if (!net_eq(wiphy_net(&rdev->wiphy), net))
9197                 err = cfg80211_switch_netns(rdev, net);
9198
9199         put_net(net);
9200         return err;
9201 }
9202
9203 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
9204 {
9205         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9206         int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
9207                         struct cfg80211_pmksa *pmksa) = NULL;
9208         struct net_device *dev = info->user_ptr[1];
9209         struct cfg80211_pmksa pmksa;
9210
9211         memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
9212
9213         if (!info->attrs[NL80211_ATTR_PMKID])
9214                 return -EINVAL;
9215
9216         pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
9217
9218         if (info->attrs[NL80211_ATTR_MAC]) {
9219                 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9220         } else if (info->attrs[NL80211_ATTR_SSID] &&
9221                    info->attrs[NL80211_ATTR_FILS_CACHE_ID] &&
9222                    (info->genlhdr->cmd == NL80211_CMD_DEL_PMKSA ||
9223                     info->attrs[NL80211_ATTR_PMK])) {
9224                 pmksa.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
9225                 pmksa.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
9226                 pmksa.cache_id =
9227                         nla_data(info->attrs[NL80211_ATTR_FILS_CACHE_ID]);
9228         } else {
9229                 return -EINVAL;
9230         }
9231         if (info->attrs[NL80211_ATTR_PMK]) {
9232                 pmksa.pmk = nla_data(info->attrs[NL80211_ATTR_PMK]);
9233                 pmksa.pmk_len = nla_len(info->attrs[NL80211_ATTR_PMK]);
9234         }
9235
9236         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9237             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9238                 return -EOPNOTSUPP;
9239
9240         switch (info->genlhdr->cmd) {
9241         case NL80211_CMD_SET_PMKSA:
9242                 rdev_ops = rdev->ops->set_pmksa;
9243                 break;
9244         case NL80211_CMD_DEL_PMKSA:
9245                 rdev_ops = rdev->ops->del_pmksa;
9246                 break;
9247         default:
9248                 WARN_ON(1);
9249                 break;
9250         }
9251
9252         if (!rdev_ops)
9253                 return -EOPNOTSUPP;
9254
9255         return rdev_ops(&rdev->wiphy, dev, &pmksa);
9256 }
9257
9258 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
9259 {
9260         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9261         struct net_device *dev = info->user_ptr[1];
9262
9263         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9264             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9265                 return -EOPNOTSUPP;
9266
9267         if (!rdev->ops->flush_pmksa)
9268                 return -EOPNOTSUPP;
9269
9270         return rdev_flush_pmksa(rdev, dev);
9271 }
9272
9273 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
9274 {
9275         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9276         struct net_device *dev = info->user_ptr[1];
9277         u8 action_code, dialog_token;
9278         u32 peer_capability = 0;
9279         u16 status_code;
9280         u8 *peer;
9281         bool initiator;
9282
9283         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
9284             !rdev->ops->tdls_mgmt)
9285                 return -EOPNOTSUPP;
9286
9287         if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
9288             !info->attrs[NL80211_ATTR_STATUS_CODE] ||
9289             !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
9290             !info->attrs[NL80211_ATTR_IE] ||
9291             !info->attrs[NL80211_ATTR_MAC])
9292                 return -EINVAL;
9293
9294         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
9295         action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
9296         status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
9297         dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
9298         initiator = nla_get_flag(info->attrs[NL80211_ATTR_TDLS_INITIATOR]);
9299         if (info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY])
9300                 peer_capability =
9301                         nla_get_u32(info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY]);
9302
9303         return rdev_tdls_mgmt(rdev, dev, peer, action_code,
9304                               dialog_token, status_code, peer_capability,
9305                               initiator,
9306                               nla_data(info->attrs[NL80211_ATTR_IE]),
9307                               nla_len(info->attrs[NL80211_ATTR_IE]));
9308 }
9309
9310 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
9311 {
9312         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9313         struct net_device *dev = info->user_ptr[1];
9314         enum nl80211_tdls_operation operation;
9315         u8 *peer;
9316
9317         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
9318             !rdev->ops->tdls_oper)
9319                 return -EOPNOTSUPP;
9320
9321         if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
9322             !info->attrs[NL80211_ATTR_MAC])
9323                 return -EINVAL;
9324
9325         operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
9326         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
9327
9328         return rdev_tdls_oper(rdev, dev, peer, operation);
9329 }
9330
9331 static int nl80211_remain_on_channel(struct sk_buff *skb,
9332                                      struct genl_info *info)
9333 {
9334         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9335         struct wireless_dev *wdev = info->user_ptr[1];
9336         struct cfg80211_chan_def chandef;
9337         const struct cfg80211_chan_def *compat_chandef;
9338         struct sk_buff *msg;
9339         void *hdr;
9340         u64 cookie;
9341         u32 duration;
9342         int err;
9343
9344         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
9345             !info->attrs[NL80211_ATTR_DURATION])
9346                 return -EINVAL;
9347
9348         duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
9349
9350         if (!rdev->ops->remain_on_channel ||
9351             !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL))
9352                 return -EOPNOTSUPP;
9353
9354         /*
9355          * We should be on that channel for at least a minimum amount of
9356          * time (10ms) but no longer than the driver supports.
9357          */
9358         if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
9359             duration > rdev->wiphy.max_remain_on_channel_duration)
9360                 return -EINVAL;
9361
9362         err = nl80211_parse_chandef(rdev, info, &chandef);
9363         if (err)
9364                 return err;
9365
9366         wdev_lock(wdev);
9367         if (!cfg80211_off_channel_oper_allowed(wdev) &&
9368             !cfg80211_chandef_identical(&wdev->chandef, &chandef)) {
9369                 compat_chandef = cfg80211_chandef_compatible(&wdev->chandef,
9370                                                              &chandef);
9371                 if (compat_chandef != &chandef) {
9372                         wdev_unlock(wdev);
9373                         return -EBUSY;
9374                 }
9375         }
9376         wdev_unlock(wdev);
9377
9378         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9379         if (!msg)
9380                 return -ENOMEM;
9381
9382         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9383                              NL80211_CMD_REMAIN_ON_CHANNEL);
9384         if (!hdr) {
9385                 err = -ENOBUFS;
9386                 goto free_msg;
9387         }
9388
9389         err = rdev_remain_on_channel(rdev, wdev, chandef.chan,
9390                                      duration, &cookie);
9391
9392         if (err)
9393                 goto free_msg;
9394
9395         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
9396                               NL80211_ATTR_PAD))
9397                 goto nla_put_failure;
9398
9399         genlmsg_end(msg, hdr);
9400
9401         return genlmsg_reply(msg, info);
9402
9403  nla_put_failure:
9404         err = -ENOBUFS;
9405  free_msg:
9406         nlmsg_free(msg);
9407         return err;
9408 }
9409
9410 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
9411                                             struct genl_info *info)
9412 {
9413         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9414         struct wireless_dev *wdev = info->user_ptr[1];
9415         u64 cookie;
9416
9417         if (!info->attrs[NL80211_ATTR_COOKIE])
9418                 return -EINVAL;
9419
9420         if (!rdev->ops->cancel_remain_on_channel)
9421                 return -EOPNOTSUPP;
9422
9423         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
9424
9425         return rdev_cancel_remain_on_channel(rdev, wdev, cookie);
9426 }
9427
9428 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
9429                                        struct genl_info *info)
9430 {
9431         struct cfg80211_bitrate_mask mask;
9432         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9433         struct net_device *dev = info->user_ptr[1];
9434         int err;
9435
9436         if (!rdev->ops->set_bitrate_mask)
9437                 return -EOPNOTSUPP;
9438
9439         err = nl80211_parse_tx_bitrate_mask(info, &mask);
9440         if (err)
9441                 return err;
9442
9443         return rdev_set_bitrate_mask(rdev, dev, NULL, &mask);
9444 }
9445
9446 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
9447 {
9448         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9449         struct wireless_dev *wdev = info->user_ptr[1];
9450         u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
9451
9452         if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
9453                 return -EINVAL;
9454
9455         if (info->attrs[NL80211_ATTR_FRAME_TYPE])
9456                 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
9457
9458         switch (wdev->iftype) {
9459         case NL80211_IFTYPE_STATION:
9460         case NL80211_IFTYPE_ADHOC:
9461         case NL80211_IFTYPE_P2P_CLIENT:
9462         case NL80211_IFTYPE_AP:
9463         case NL80211_IFTYPE_AP_VLAN:
9464         case NL80211_IFTYPE_MESH_POINT:
9465         case NL80211_IFTYPE_P2P_GO:
9466         case NL80211_IFTYPE_P2P_DEVICE:
9467                 break;
9468         case NL80211_IFTYPE_NAN:
9469         default:
9470                 return -EOPNOTSUPP;
9471         }
9472
9473         /* not much point in registering if we can't reply */
9474         if (!rdev->ops->mgmt_tx)
9475                 return -EOPNOTSUPP;
9476
9477         return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type,
9478                         nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
9479                         nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]));
9480 }
9481
9482 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
9483 {
9484         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9485         struct wireless_dev *wdev = info->user_ptr[1];
9486         struct cfg80211_chan_def chandef;
9487         int err;
9488         void *hdr = NULL;
9489         u64 cookie;
9490         struct sk_buff *msg = NULL;
9491         struct cfg80211_mgmt_tx_params params = {
9492                 .dont_wait_for_ack =
9493                         info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK],
9494         };
9495
9496         if (!info->attrs[NL80211_ATTR_FRAME])
9497                 return -EINVAL;
9498
9499         if (!rdev->ops->mgmt_tx)
9500                 return -EOPNOTSUPP;
9501
9502         switch (wdev->iftype) {
9503         case NL80211_IFTYPE_P2P_DEVICE:
9504                 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
9505                         return -EINVAL;
9506         case NL80211_IFTYPE_STATION:
9507         case NL80211_IFTYPE_ADHOC:
9508         case NL80211_IFTYPE_P2P_CLIENT:
9509         case NL80211_IFTYPE_AP:
9510         case NL80211_IFTYPE_AP_VLAN:
9511         case NL80211_IFTYPE_MESH_POINT:
9512         case NL80211_IFTYPE_P2P_GO:
9513                 break;
9514         case NL80211_IFTYPE_NAN:
9515         default:
9516                 return -EOPNOTSUPP;
9517         }
9518
9519         if (info->attrs[NL80211_ATTR_DURATION]) {
9520                 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
9521                         return -EINVAL;
9522                 params.wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
9523
9524                 /*
9525                  * We should wait on the channel for at least a minimum amount
9526                  * of time (10ms) but no longer than the driver supports.
9527                  */
9528                 if (params.wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
9529                     params.wait > rdev->wiphy.max_remain_on_channel_duration)
9530                         return -EINVAL;
9531         }
9532
9533         params.offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
9534
9535         if (params.offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
9536                 return -EINVAL;
9537
9538         params.no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
9539
9540         /* get the channel if any has been specified, otherwise pass NULL to
9541          * the driver. The latter will use the current one
9542          */
9543         chandef.chan = NULL;
9544         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
9545                 err = nl80211_parse_chandef(rdev, info, &chandef);
9546                 if (err)
9547                         return err;
9548         }
9549
9550         if (!chandef.chan && params.offchan)
9551                 return -EINVAL;
9552
9553         wdev_lock(wdev);
9554         if (params.offchan && !cfg80211_off_channel_oper_allowed(wdev)) {
9555                 wdev_unlock(wdev);
9556                 return -EBUSY;
9557         }
9558         wdev_unlock(wdev);
9559
9560         params.buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
9561         params.len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
9562
9563         if (info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]) {
9564                 int len = nla_len(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
9565                 int i;
9566
9567                 if (len % sizeof(u16))
9568                         return -EINVAL;
9569
9570                 params.n_csa_offsets = len / sizeof(u16);
9571                 params.csa_offsets =
9572                         nla_data(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
9573
9574                 /* check that all the offsets fit the frame */
9575                 for (i = 0; i < params.n_csa_offsets; i++) {
9576                         if (params.csa_offsets[i] >= params.len)
9577                                 return -EINVAL;
9578                 }
9579         }
9580
9581         if (!params.dont_wait_for_ack) {
9582                 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9583                 if (!msg)
9584                         return -ENOMEM;
9585
9586                 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9587                                      NL80211_CMD_FRAME);
9588                 if (!hdr) {
9589                         err = -ENOBUFS;
9590                         goto free_msg;
9591                 }
9592         }
9593
9594         params.chan = chandef.chan;
9595         err = cfg80211_mlme_mgmt_tx(rdev, wdev, &params, &cookie);
9596         if (err)
9597                 goto free_msg;
9598
9599         if (msg) {
9600                 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
9601                                       NL80211_ATTR_PAD))
9602                         goto nla_put_failure;
9603
9604                 genlmsg_end(msg, hdr);
9605                 return genlmsg_reply(msg, info);
9606         }
9607
9608         return 0;
9609
9610  nla_put_failure:
9611         err = -ENOBUFS;
9612  free_msg:
9613         nlmsg_free(msg);
9614         return err;
9615 }
9616
9617 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
9618 {
9619         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9620         struct wireless_dev *wdev = info->user_ptr[1];
9621         u64 cookie;
9622
9623         if (!info->attrs[NL80211_ATTR_COOKIE])
9624                 return -EINVAL;
9625
9626         if (!rdev->ops->mgmt_tx_cancel_wait)
9627                 return -EOPNOTSUPP;
9628
9629         switch (wdev->iftype) {
9630         case NL80211_IFTYPE_STATION:
9631         case NL80211_IFTYPE_ADHOC:
9632         case NL80211_IFTYPE_P2P_CLIENT:
9633         case NL80211_IFTYPE_AP:
9634         case NL80211_IFTYPE_AP_VLAN:
9635         case NL80211_IFTYPE_P2P_GO:
9636         case NL80211_IFTYPE_P2P_DEVICE:
9637                 break;
9638         case NL80211_IFTYPE_NAN:
9639         default:
9640                 return -EOPNOTSUPP;
9641         }
9642
9643         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
9644
9645         return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie);
9646 }
9647
9648 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
9649 {
9650         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9651         struct wireless_dev *wdev;
9652         struct net_device *dev = info->user_ptr[1];
9653         u8 ps_state;
9654         bool state;
9655         int err;
9656
9657         if (!info->attrs[NL80211_ATTR_PS_STATE])
9658                 return -EINVAL;
9659
9660         ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
9661
9662         if (ps_state != NL80211_PS_DISABLED && ps_state != NL80211_PS_ENABLED)
9663                 return -EINVAL;
9664
9665         wdev = dev->ieee80211_ptr;
9666
9667         if (!rdev->ops->set_power_mgmt)
9668                 return -EOPNOTSUPP;
9669
9670         state = (ps_state == NL80211_PS_ENABLED) ? true : false;
9671
9672         if (state == wdev->ps)
9673                 return 0;
9674
9675         err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout);
9676         if (!err)
9677                 wdev->ps = state;
9678         return err;
9679 }
9680
9681 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
9682 {
9683         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9684         enum nl80211_ps_state ps_state;
9685         struct wireless_dev *wdev;
9686         struct net_device *dev = info->user_ptr[1];
9687         struct sk_buff *msg;
9688         void *hdr;
9689         int err;
9690
9691         wdev = dev->ieee80211_ptr;
9692
9693         if (!rdev->ops->set_power_mgmt)
9694                 return -EOPNOTSUPP;
9695
9696         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9697         if (!msg)
9698                 return -ENOMEM;
9699
9700         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9701                              NL80211_CMD_GET_POWER_SAVE);
9702         if (!hdr) {
9703                 err = -ENOBUFS;
9704                 goto free_msg;
9705         }
9706
9707         if (wdev->ps)
9708                 ps_state = NL80211_PS_ENABLED;
9709         else
9710                 ps_state = NL80211_PS_DISABLED;
9711
9712         if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state))
9713                 goto nla_put_failure;
9714
9715         genlmsg_end(msg, hdr);
9716         return genlmsg_reply(msg, info);
9717
9718  nla_put_failure:
9719         err = -ENOBUFS;
9720  free_msg:
9721         nlmsg_free(msg);
9722         return err;
9723 }
9724
9725 static const struct nla_policy
9726 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] = {
9727         [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_BINARY },
9728         [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
9729         [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
9730         [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 },
9731         [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 },
9732         [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 },
9733         [NL80211_ATTR_CQM_RSSI_LEVEL] = { .type = NLA_S32 },
9734 };
9735
9736 static int nl80211_set_cqm_txe(struct genl_info *info,
9737                                u32 rate, u32 pkts, u32 intvl)
9738 {
9739         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9740         struct net_device *dev = info->user_ptr[1];
9741         struct wireless_dev *wdev = dev->ieee80211_ptr;
9742
9743         if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL)
9744                 return -EINVAL;
9745
9746         if (!rdev->ops->set_cqm_txe_config)
9747                 return -EOPNOTSUPP;
9748
9749         if (wdev->iftype != NL80211_IFTYPE_STATION &&
9750             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
9751                 return -EOPNOTSUPP;
9752
9753         return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl);
9754 }
9755
9756 static int cfg80211_cqm_rssi_update(struct cfg80211_registered_device *rdev,
9757                                     struct net_device *dev)
9758 {
9759         struct wireless_dev *wdev = dev->ieee80211_ptr;
9760         s32 last, low, high;
9761         u32 hyst;
9762         int i, n;
9763         int err;
9764
9765         /* RSSI reporting disabled? */
9766         if (!wdev->cqm_config)
9767                 return rdev_set_cqm_rssi_range_config(rdev, dev, 0, 0);
9768
9769         /*
9770          * Obtain current RSSI value if possible, if not and no RSSI threshold
9771          * event has been received yet, we should receive an event after a
9772          * connection is established and enough beacons received to calculate
9773          * the average.
9774          */
9775         if (!wdev->cqm_config->last_rssi_event_value && wdev->current_bss &&
9776             rdev->ops->get_station) {
9777                 struct station_info sinfo;
9778                 u8 *mac_addr;
9779
9780                 mac_addr = wdev->current_bss->pub.bssid;
9781
9782                 err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
9783                 if (err)
9784                         return err;
9785
9786                 if (sinfo.filled & BIT(NL80211_STA_INFO_BEACON_SIGNAL_AVG))
9787                         wdev->cqm_config->last_rssi_event_value =
9788                                 (s8) sinfo.rx_beacon_signal_avg;
9789         }
9790
9791         last = wdev->cqm_config->last_rssi_event_value;
9792         hyst = wdev->cqm_config->rssi_hyst;
9793         n = wdev->cqm_config->n_rssi_thresholds;
9794
9795         for (i = 0; i < n; i++)
9796                 if (last < wdev->cqm_config->rssi_thresholds[i])
9797                         break;
9798
9799         low = i > 0 ?
9800                 (wdev->cqm_config->rssi_thresholds[i - 1] - hyst) : S32_MIN;
9801         high = i < n ?
9802                 (wdev->cqm_config->rssi_thresholds[i] + hyst - 1) : S32_MAX;
9803
9804         return rdev_set_cqm_rssi_range_config(rdev, dev, low, high);
9805 }
9806
9807 static int nl80211_set_cqm_rssi(struct genl_info *info,
9808                                 const s32 *thresholds, int n_thresholds,
9809                                 u32 hysteresis)
9810 {
9811         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9812         struct net_device *dev = info->user_ptr[1];
9813         struct wireless_dev *wdev = dev->ieee80211_ptr;
9814         int i, err;
9815         s32 prev = S32_MIN;
9816
9817         /* Check all values negative and sorted */
9818         for (i = 0; i < n_thresholds; i++) {
9819                 if (thresholds[i] > 0 || thresholds[i] <= prev)
9820                         return -EINVAL;
9821
9822                 prev = thresholds[i];
9823         }
9824
9825         if (wdev->iftype != NL80211_IFTYPE_STATION &&
9826             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
9827                 return -EOPNOTSUPP;
9828
9829         wdev_lock(wdev);
9830         cfg80211_cqm_config_free(wdev);
9831         wdev_unlock(wdev);
9832
9833         if (n_thresholds <= 1 && rdev->ops->set_cqm_rssi_config) {
9834                 if (n_thresholds == 0 || thresholds[0] == 0) /* Disabling */
9835                         return rdev_set_cqm_rssi_config(rdev, dev, 0, 0);
9836
9837                 return rdev_set_cqm_rssi_config(rdev, dev,
9838                                                 thresholds[0], hysteresis);
9839         }
9840
9841         if (!wiphy_ext_feature_isset(&rdev->wiphy,
9842                                      NL80211_EXT_FEATURE_CQM_RSSI_LIST))
9843                 return -EOPNOTSUPP;
9844
9845         if (n_thresholds == 1 && thresholds[0] == 0) /* Disabling */
9846                 n_thresholds = 0;
9847
9848         wdev_lock(wdev);
9849         if (n_thresholds) {
9850                 struct cfg80211_cqm_config *cqm_config;
9851
9852                 cqm_config = kzalloc(sizeof(struct cfg80211_cqm_config) +
9853                                      n_thresholds * sizeof(s32), GFP_KERNEL);
9854                 if (!cqm_config) {
9855                         err = -ENOMEM;
9856                         goto unlock;
9857                 }
9858
9859                 cqm_config->rssi_hyst = hysteresis;
9860                 cqm_config->n_rssi_thresholds = n_thresholds;
9861                 memcpy(cqm_config->rssi_thresholds, thresholds,
9862                        n_thresholds * sizeof(s32));
9863
9864                 wdev->cqm_config = cqm_config;
9865         }
9866
9867         err = cfg80211_cqm_rssi_update(rdev, dev);
9868
9869 unlock:
9870         wdev_unlock(wdev);
9871
9872         return err;
9873 }
9874
9875 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
9876 {
9877         struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
9878         struct nlattr *cqm;
9879         int err;
9880
9881         cqm = info->attrs[NL80211_ATTR_CQM];
9882         if (!cqm)
9883                 return -EINVAL;
9884
9885         err = nla_parse_nested(attrs, NL80211_ATTR_CQM_MAX, cqm,
9886                                nl80211_attr_cqm_policy, info->extack);
9887         if (err)
9888                 return err;
9889
9890         if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
9891             attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
9892                 const s32 *thresholds =
9893                         nla_data(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
9894                 int len = nla_len(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
9895                 u32 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
9896
9897                 if (len % 4)
9898                         return -EINVAL;
9899
9900                 return nl80211_set_cqm_rssi(info, thresholds, len / 4,
9901                                             hysteresis);
9902         }
9903
9904         if (attrs[NL80211_ATTR_CQM_TXE_RATE] &&
9905             attrs[NL80211_ATTR_CQM_TXE_PKTS] &&
9906             attrs[NL80211_ATTR_CQM_TXE_INTVL]) {
9907                 u32 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]);
9908                 u32 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]);
9909                 u32 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]);
9910
9911                 return nl80211_set_cqm_txe(info, rate, pkts, intvl);
9912         }
9913
9914         return -EINVAL;
9915 }
9916
9917 static int nl80211_join_ocb(struct sk_buff *skb, struct genl_info *info)
9918 {
9919         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9920         struct net_device *dev = info->user_ptr[1];
9921         struct ocb_setup setup = {};
9922         int err;
9923
9924         err = nl80211_parse_chandef(rdev, info, &setup.chandef);
9925         if (err)
9926                 return err;
9927
9928         return cfg80211_join_ocb(rdev, dev, &setup);
9929 }
9930
9931 static int nl80211_leave_ocb(struct sk_buff *skb, struct genl_info *info)
9932 {
9933         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9934         struct net_device *dev = info->user_ptr[1];
9935
9936         return cfg80211_leave_ocb(rdev, dev);
9937 }
9938
9939 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
9940 {
9941         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9942         struct net_device *dev = info->user_ptr[1];
9943         struct mesh_config cfg;
9944         struct mesh_setup setup;
9945         int err;
9946
9947         /* start with default */
9948         memcpy(&cfg, &default_mesh_config, sizeof(cfg));
9949         memcpy(&setup, &default_mesh_setup, sizeof(setup));
9950
9951         if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
9952                 /* and parse parameters if given */
9953                 err = nl80211_parse_mesh_config(info, &cfg, NULL);
9954                 if (err)
9955                         return err;
9956         }
9957
9958         if (!info->attrs[NL80211_ATTR_MESH_ID] ||
9959             !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
9960                 return -EINVAL;
9961
9962         setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
9963         setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
9964
9965         if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
9966             !nl80211_parse_mcast_rate(rdev, setup.mcast_rate,
9967                             nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
9968                         return -EINVAL;
9969
9970         if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
9971                 setup.beacon_interval =
9972                         nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
9973
9974                 err = cfg80211_validate_beacon_int(rdev,
9975                                                    NL80211_IFTYPE_MESH_POINT,
9976                                                    setup.beacon_interval);
9977                 if (err)
9978                         return err;
9979         }
9980
9981         if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
9982                 setup.dtim_period =
9983                         nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
9984                 if (setup.dtim_period < 1 || setup.dtim_period > 100)
9985                         return -EINVAL;
9986         }
9987
9988         if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
9989                 /* parse additional setup parameters if given */
9990                 err = nl80211_parse_mesh_setup(info, &setup);
9991                 if (err)
9992                         return err;
9993         }
9994
9995         if (setup.user_mpm)
9996                 cfg.auto_open_plinks = false;
9997
9998         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
9999                 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
10000                 if (err)
10001                         return err;
10002         } else {
10003                 /* cfg80211_join_mesh() will sort it out */
10004                 setup.chandef.chan = NULL;
10005         }
10006
10007         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
10008                 u8 *rates = nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
10009                 int n_rates =
10010                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
10011                 struct ieee80211_supported_band *sband;
10012
10013                 if (!setup.chandef.chan)
10014                         return -EINVAL;
10015
10016                 sband = rdev->wiphy.bands[setup.chandef.chan->band];
10017
10018                 err = ieee80211_get_ratemask(sband, rates, n_rates,
10019                                              &setup.basic_rates);
10020                 if (err)
10021                         return err;
10022         }
10023
10024         if (info->attrs[NL80211_ATTR_TX_RATES]) {
10025                 err = nl80211_parse_tx_bitrate_mask(info, &setup.beacon_rate);
10026                 if (err)
10027                         return err;
10028
10029                 if (!setup.chandef.chan)
10030                         return -EINVAL;
10031
10032                 err = validate_beacon_tx_rate(rdev, setup.chandef.chan->band,
10033                                               &setup.beacon_rate);
10034                 if (err)
10035                         return err;
10036         }
10037
10038         setup.userspace_handles_dfs =
10039                 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
10040
10041         return cfg80211_join_mesh(rdev, dev, &setup, &cfg);
10042 }
10043
10044 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
10045 {
10046         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10047         struct net_device *dev = info->user_ptr[1];
10048
10049         return cfg80211_leave_mesh(rdev, dev);
10050 }
10051
10052 #ifdef CONFIG_PM
10053 static int nl80211_send_wowlan_patterns(struct sk_buff *msg,
10054                                         struct cfg80211_registered_device *rdev)
10055 {
10056         struct cfg80211_wowlan *wowlan = rdev->wiphy.wowlan_config;
10057         struct nlattr *nl_pats, *nl_pat;
10058         int i, pat_len;
10059
10060         if (!wowlan->n_patterns)
10061                 return 0;
10062
10063         nl_pats = nla_nest_start(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN);
10064         if (!nl_pats)
10065                 return -ENOBUFS;
10066
10067         for (i = 0; i < wowlan->n_patterns; i++) {
10068                 nl_pat = nla_nest_start(msg, i + 1);
10069                 if (!nl_pat)
10070                         return -ENOBUFS;
10071                 pat_len = wowlan->patterns[i].pattern_len;
10072                 if (nla_put(msg, NL80211_PKTPAT_MASK, DIV_ROUND_UP(pat_len, 8),
10073                             wowlan->patterns[i].mask) ||
10074                     nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
10075                             wowlan->patterns[i].pattern) ||
10076                     nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
10077                                 wowlan->patterns[i].pkt_offset))
10078                         return -ENOBUFS;
10079                 nla_nest_end(msg, nl_pat);
10080         }
10081         nla_nest_end(msg, nl_pats);
10082
10083         return 0;
10084 }
10085
10086 static int nl80211_send_wowlan_tcp(struct sk_buff *msg,
10087                                    struct cfg80211_wowlan_tcp *tcp)
10088 {
10089         struct nlattr *nl_tcp;
10090
10091         if (!tcp)
10092                 return 0;
10093
10094         nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
10095         if (!nl_tcp)
10096                 return -ENOBUFS;
10097
10098         if (nla_put_in_addr(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) ||
10099             nla_put_in_addr(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) ||
10100             nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) ||
10101             nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) ||
10102             nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) ||
10103             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
10104                     tcp->payload_len, tcp->payload) ||
10105             nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
10106                         tcp->data_interval) ||
10107             nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
10108                     tcp->wake_len, tcp->wake_data) ||
10109             nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK,
10110                     DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask))
10111                 return -ENOBUFS;
10112
10113         if (tcp->payload_seq.len &&
10114             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ,
10115                     sizeof(tcp->payload_seq), &tcp->payload_seq))
10116                 return -ENOBUFS;
10117
10118         if (tcp->payload_tok.len &&
10119             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
10120                     sizeof(tcp->payload_tok) + tcp->tokens_size,
10121                     &tcp->payload_tok))
10122                 return -ENOBUFS;
10123
10124         nla_nest_end(msg, nl_tcp);
10125
10126         return 0;
10127 }
10128
10129 static int nl80211_send_wowlan_nd(struct sk_buff *msg,
10130                                   struct cfg80211_sched_scan_request *req)
10131 {
10132         struct nlattr *nd, *freqs, *matches, *match, *scan_plans, *scan_plan;
10133         int i;
10134
10135         if (!req)
10136                 return 0;
10137
10138         nd = nla_nest_start(msg, NL80211_WOWLAN_TRIG_NET_DETECT);
10139         if (!nd)
10140                 return -ENOBUFS;
10141
10142         if (req->n_scan_plans == 1 &&
10143             nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_INTERVAL,
10144                         req->scan_plans[0].interval * 1000))
10145                 return -ENOBUFS;
10146
10147         if (nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_DELAY, req->delay))
10148                 return -ENOBUFS;
10149
10150         if (req->relative_rssi_set) {
10151                 struct nl80211_bss_select_rssi_adjust rssi_adjust;
10152
10153                 if (nla_put_s8(msg, NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI,
10154                                req->relative_rssi))
10155                         return -ENOBUFS;
10156
10157                 rssi_adjust.band = req->rssi_adjust.band;
10158                 rssi_adjust.delta = req->rssi_adjust.delta;
10159                 if (nla_put(msg, NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST,
10160                             sizeof(rssi_adjust), &rssi_adjust))
10161                         return -ENOBUFS;
10162         }
10163
10164         freqs = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
10165         if (!freqs)
10166                 return -ENOBUFS;
10167
10168         for (i = 0; i < req->n_channels; i++) {
10169                 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
10170                         return -ENOBUFS;
10171         }
10172
10173         nla_nest_end(msg, freqs);
10174
10175         if (req->n_match_sets) {
10176                 matches = nla_nest_start(msg, NL80211_ATTR_SCHED_SCAN_MATCH);
10177                 if (!matches)
10178                         return -ENOBUFS;
10179
10180                 for (i = 0; i < req->n_match_sets; i++) {
10181                         match = nla_nest_start(msg, i);
10182                         if (!match)
10183                                 return -ENOBUFS;
10184
10185                         if (nla_put(msg, NL80211_SCHED_SCAN_MATCH_ATTR_SSID,
10186                                     req->match_sets[i].ssid.ssid_len,
10187                                     req->match_sets[i].ssid.ssid))
10188                                 return -ENOBUFS;
10189                         nla_nest_end(msg, match);
10190                 }
10191                 nla_nest_end(msg, matches);
10192         }
10193
10194         scan_plans = nla_nest_start(msg, NL80211_ATTR_SCHED_SCAN_PLANS);
10195         if (!scan_plans)
10196                 return -ENOBUFS;
10197
10198         for (i = 0; i < req->n_scan_plans; i++) {
10199                 scan_plan = nla_nest_start(msg, i + 1);
10200                 if (!scan_plan)
10201                         return -ENOBUFS;
10202
10203                 if (!scan_plan ||
10204                     nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_INTERVAL,
10205                                 req->scan_plans[i].interval) ||
10206                     (req->scan_plans[i].iterations &&
10207                      nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_ITERATIONS,
10208                                  req->scan_plans[i].iterations)))
10209                         return -ENOBUFS;
10210                 nla_nest_end(msg, scan_plan);
10211         }
10212         nla_nest_end(msg, scan_plans);
10213
10214         nla_nest_end(msg, nd);
10215
10216         return 0;
10217 }
10218
10219 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
10220 {
10221         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10222         struct sk_buff *msg;
10223         void *hdr;
10224         u32 size = NLMSG_DEFAULT_SIZE;
10225
10226         if (!rdev->wiphy.wowlan)
10227                 return -EOPNOTSUPP;
10228
10229         if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) {
10230                 /* adjust size to have room for all the data */
10231                 size += rdev->wiphy.wowlan_config->tcp->tokens_size +
10232                         rdev->wiphy.wowlan_config->tcp->payload_len +
10233                         rdev->wiphy.wowlan_config->tcp->wake_len +
10234                         rdev->wiphy.wowlan_config->tcp->wake_len / 8;
10235         }
10236
10237         msg = nlmsg_new(size, GFP_KERNEL);
10238         if (!msg)
10239                 return -ENOMEM;
10240
10241         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
10242                              NL80211_CMD_GET_WOWLAN);
10243         if (!hdr)
10244                 goto nla_put_failure;
10245
10246         if (rdev->wiphy.wowlan_config) {
10247                 struct nlattr *nl_wowlan;
10248
10249                 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
10250                 if (!nl_wowlan)
10251                         goto nla_put_failure;
10252
10253                 if ((rdev->wiphy.wowlan_config->any &&
10254                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
10255                     (rdev->wiphy.wowlan_config->disconnect &&
10256                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
10257                     (rdev->wiphy.wowlan_config->magic_pkt &&
10258                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
10259                     (rdev->wiphy.wowlan_config->gtk_rekey_failure &&
10260                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
10261                     (rdev->wiphy.wowlan_config->eap_identity_req &&
10262                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
10263                     (rdev->wiphy.wowlan_config->four_way_handshake &&
10264                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
10265                     (rdev->wiphy.wowlan_config->rfkill_release &&
10266                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
10267                         goto nla_put_failure;
10268
10269                 if (nl80211_send_wowlan_patterns(msg, rdev))
10270                         goto nla_put_failure;
10271
10272                 if (nl80211_send_wowlan_tcp(msg,
10273                                             rdev->wiphy.wowlan_config->tcp))
10274                         goto nla_put_failure;
10275
10276                 if (nl80211_send_wowlan_nd(
10277                             msg,
10278                             rdev->wiphy.wowlan_config->nd_config))
10279                         goto nla_put_failure;
10280
10281                 nla_nest_end(msg, nl_wowlan);
10282         }
10283
10284         genlmsg_end(msg, hdr);
10285         return genlmsg_reply(msg, info);
10286
10287 nla_put_failure:
10288         nlmsg_free(msg);
10289         return -ENOBUFS;
10290 }
10291
10292 static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev,
10293                                     struct nlattr *attr,
10294                                     struct cfg80211_wowlan *trig)
10295 {
10296         struct nlattr *tb[NUM_NL80211_WOWLAN_TCP];
10297         struct cfg80211_wowlan_tcp *cfg;
10298         struct nl80211_wowlan_tcp_data_token *tok = NULL;
10299         struct nl80211_wowlan_tcp_data_seq *seq = NULL;
10300         u32 size;
10301         u32 data_size, wake_size, tokens_size = 0, wake_mask_size;
10302         int err, port;
10303
10304         if (!rdev->wiphy.wowlan->tcp)
10305                 return -EINVAL;
10306
10307         err = nla_parse_nested(tb, MAX_NL80211_WOWLAN_TCP, attr,
10308                                nl80211_wowlan_tcp_policy, NULL);
10309         if (err)
10310                 return err;
10311
10312         if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] ||
10313             !tb[NL80211_WOWLAN_TCP_DST_IPV4] ||
10314             !tb[NL80211_WOWLAN_TCP_DST_MAC] ||
10315             !tb[NL80211_WOWLAN_TCP_DST_PORT] ||
10316             !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] ||
10317             !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] ||
10318             !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] ||
10319             !tb[NL80211_WOWLAN_TCP_WAKE_MASK])
10320                 return -EINVAL;
10321
10322         data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]);
10323         if (data_size > rdev->wiphy.wowlan->tcp->data_payload_max)
10324                 return -EINVAL;
10325
10326         if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) >
10327                         rdev->wiphy.wowlan->tcp->data_interval_max ||
10328             nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0)
10329                 return -EINVAL;
10330
10331         wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]);
10332         if (wake_size > rdev->wiphy.wowlan->tcp->wake_payload_max)
10333                 return -EINVAL;
10334
10335         wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]);
10336         if (wake_mask_size != DIV_ROUND_UP(wake_size, 8))
10337                 return -EINVAL;
10338
10339         if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) {
10340                 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
10341
10342                 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
10343                 tokens_size = tokln - sizeof(*tok);
10344
10345                 if (!tok->len || tokens_size % tok->len)
10346                         return -EINVAL;
10347                 if (!rdev->wiphy.wowlan->tcp->tok)
10348                         return -EINVAL;
10349                 if (tok->len > rdev->wiphy.wowlan->tcp->tok->max_len)
10350                         return -EINVAL;
10351                 if (tok->len < rdev->wiphy.wowlan->tcp->tok->min_len)
10352                         return -EINVAL;
10353                 if (tokens_size > rdev->wiphy.wowlan->tcp->tok->bufsize)
10354                         return -EINVAL;
10355                 if (tok->offset + tok->len > data_size)
10356                         return -EINVAL;
10357         }
10358
10359         if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) {
10360                 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]);
10361                 if (!rdev->wiphy.wowlan->tcp->seq)
10362                         return -EINVAL;
10363                 if (seq->len == 0 || seq->len > 4)
10364                         return -EINVAL;
10365                 if (seq->len + seq->offset > data_size)
10366                         return -EINVAL;
10367         }
10368
10369         size = sizeof(*cfg);
10370         size += data_size;
10371         size += wake_size + wake_mask_size;
10372         size += tokens_size;
10373
10374         cfg = kzalloc(size, GFP_KERNEL);
10375         if (!cfg)
10376                 return -ENOMEM;
10377         cfg->src = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_SRC_IPV4]);
10378         cfg->dst = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_DST_IPV4]);
10379         memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]),
10380                ETH_ALEN);
10381         if (tb[NL80211_WOWLAN_TCP_SRC_PORT])
10382                 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]);
10383         else
10384                 port = 0;
10385 #ifdef CONFIG_INET
10386         /* allocate a socket and port for it and use it */
10387         err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM,
10388                             IPPROTO_TCP, &cfg->sock, 1);
10389         if (err) {
10390                 kfree(cfg);
10391                 return err;
10392         }
10393         if (inet_csk_get_port(cfg->sock->sk, port)) {
10394                 sock_release(cfg->sock);
10395                 kfree(cfg);
10396                 return -EADDRINUSE;
10397         }
10398         cfg->src_port = inet_sk(cfg->sock->sk)->inet_num;
10399 #else
10400         if (!port) {
10401                 kfree(cfg);
10402                 return -EINVAL;
10403         }
10404         cfg->src_port = port;
10405 #endif
10406
10407         cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]);
10408         cfg->payload_len = data_size;
10409         cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size;
10410         memcpy((void *)cfg->payload,
10411                nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]),
10412                data_size);
10413         if (seq)
10414                 cfg->payload_seq = *seq;
10415         cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]);
10416         cfg->wake_len = wake_size;
10417         cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size;
10418         memcpy((void *)cfg->wake_data,
10419                nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]),
10420                wake_size);
10421         cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size +
10422                          data_size + wake_size;
10423         memcpy((void *)cfg->wake_mask,
10424                nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]),
10425                wake_mask_size);
10426         if (tok) {
10427                 cfg->tokens_size = tokens_size;
10428                 memcpy(&cfg->payload_tok, tok, sizeof(*tok) + tokens_size);
10429         }
10430
10431         trig->tcp = cfg;
10432
10433         return 0;
10434 }
10435
10436 static int nl80211_parse_wowlan_nd(struct cfg80211_registered_device *rdev,
10437                                    const struct wiphy_wowlan_support *wowlan,
10438                                    struct nlattr *attr,
10439                                    struct cfg80211_wowlan *trig)
10440 {
10441         struct nlattr **tb;
10442         int err;
10443
10444         tb = kzalloc(NUM_NL80211_ATTR * sizeof(*tb), GFP_KERNEL);
10445         if (!tb)
10446                 return -ENOMEM;
10447
10448         if (!(wowlan->flags & WIPHY_WOWLAN_NET_DETECT)) {
10449                 err = -EOPNOTSUPP;
10450                 goto out;
10451         }
10452
10453         err = nla_parse_nested(tb, NL80211_ATTR_MAX, attr, nl80211_policy,
10454                                NULL);
10455         if (err)
10456                 goto out;
10457
10458         trig->nd_config = nl80211_parse_sched_scan(&rdev->wiphy, NULL, tb,
10459                                                    wowlan->max_nd_match_sets);
10460         err = PTR_ERR_OR_ZERO(trig->nd_config);
10461         if (err)
10462                 trig->nd_config = NULL;
10463
10464 out:
10465         kfree(tb);
10466         return err;
10467 }
10468
10469 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
10470 {
10471         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10472         struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
10473         struct cfg80211_wowlan new_triggers = {};
10474         struct cfg80211_wowlan *ntrig;
10475         const struct wiphy_wowlan_support *wowlan = rdev->wiphy.wowlan;
10476         int err, i;
10477         bool prev_enabled = rdev->wiphy.wowlan_config;
10478         bool regular = false;
10479
10480         if (!wowlan)
10481                 return -EOPNOTSUPP;
10482
10483         if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) {
10484                 cfg80211_rdev_free_wowlan(rdev);
10485                 rdev->wiphy.wowlan_config = NULL;
10486                 goto set_wakeup;
10487         }
10488
10489         err = nla_parse_nested(tb, MAX_NL80211_WOWLAN_TRIG,
10490                                info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS],
10491                                nl80211_wowlan_policy, info->extack);
10492         if (err)
10493                 return err;
10494
10495         if (tb[NL80211_WOWLAN_TRIG_ANY]) {
10496                 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
10497                         return -EINVAL;
10498                 new_triggers.any = true;
10499         }
10500
10501         if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
10502                 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
10503                         return -EINVAL;
10504                 new_triggers.disconnect = true;
10505                 regular = true;
10506         }
10507
10508         if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
10509                 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
10510                         return -EINVAL;
10511                 new_triggers.magic_pkt = true;
10512                 regular = true;
10513         }
10514
10515         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
10516                 return -EINVAL;
10517
10518         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
10519                 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
10520                         return -EINVAL;
10521                 new_triggers.gtk_rekey_failure = true;
10522                 regular = true;
10523         }
10524
10525         if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
10526                 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
10527                         return -EINVAL;
10528                 new_triggers.eap_identity_req = true;
10529                 regular = true;
10530         }
10531
10532         if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
10533                 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
10534                         return -EINVAL;
10535                 new_triggers.four_way_handshake = true;
10536                 regular = true;
10537         }
10538
10539         if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
10540                 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
10541                         return -EINVAL;
10542                 new_triggers.rfkill_release = true;
10543                 regular = true;
10544         }
10545
10546         if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
10547                 struct nlattr *pat;
10548                 int n_patterns = 0;
10549                 int rem, pat_len, mask_len, pkt_offset;
10550                 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
10551
10552                 regular = true;
10553
10554                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
10555                                     rem)
10556                         n_patterns++;
10557                 if (n_patterns > wowlan->n_patterns)
10558                         return -EINVAL;
10559
10560                 new_triggers.patterns = kcalloc(n_patterns,
10561                                                 sizeof(new_triggers.patterns[0]),
10562                                                 GFP_KERNEL);
10563                 if (!new_triggers.patterns)
10564                         return -ENOMEM;
10565
10566                 new_triggers.n_patterns = n_patterns;
10567                 i = 0;
10568
10569                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
10570                                     rem) {
10571                         u8 *mask_pat;
10572
10573                         nla_parse_nested(pat_tb, MAX_NL80211_PKTPAT, pat,
10574                                          NULL, info->extack);
10575                         err = -EINVAL;
10576                         if (!pat_tb[NL80211_PKTPAT_MASK] ||
10577                             !pat_tb[NL80211_PKTPAT_PATTERN])
10578                                 goto error;
10579                         pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
10580                         mask_len = DIV_ROUND_UP(pat_len, 8);
10581                         if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
10582                                 goto error;
10583                         if (pat_len > wowlan->pattern_max_len ||
10584                             pat_len < wowlan->pattern_min_len)
10585                                 goto error;
10586
10587                         if (!pat_tb[NL80211_PKTPAT_OFFSET])
10588                                 pkt_offset = 0;
10589                         else
10590                                 pkt_offset = nla_get_u32(
10591                                         pat_tb[NL80211_PKTPAT_OFFSET]);
10592                         if (pkt_offset > wowlan->max_pkt_offset)
10593                                 goto error;
10594                         new_triggers.patterns[i].pkt_offset = pkt_offset;
10595
10596                         mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
10597                         if (!mask_pat) {
10598                                 err = -ENOMEM;
10599                                 goto error;
10600                         }
10601                         new_triggers.patterns[i].mask = mask_pat;
10602                         memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
10603                                mask_len);
10604                         mask_pat += mask_len;
10605                         new_triggers.patterns[i].pattern = mask_pat;
10606                         new_triggers.patterns[i].pattern_len = pat_len;
10607                         memcpy(mask_pat,
10608                                nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
10609                                pat_len);
10610                         i++;
10611                 }
10612         }
10613
10614         if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) {
10615                 regular = true;
10616                 err = nl80211_parse_wowlan_tcp(
10617                         rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION],
10618                         &new_triggers);
10619                 if (err)
10620                         goto error;
10621         }
10622
10623         if (tb[NL80211_WOWLAN_TRIG_NET_DETECT]) {
10624                 regular = true;
10625                 err = nl80211_parse_wowlan_nd(
10626                         rdev, wowlan, tb[NL80211_WOWLAN_TRIG_NET_DETECT],
10627                         &new_triggers);
10628                 if (err)
10629                         goto error;
10630         }
10631
10632         /* The 'any' trigger means the device continues operating more or less
10633          * as in its normal operation mode and wakes up the host on most of the
10634          * normal interrupts (like packet RX, ...)
10635          * It therefore makes little sense to combine with the more constrained
10636          * wakeup trigger modes.
10637          */
10638         if (new_triggers.any && regular) {
10639                 err = -EINVAL;
10640                 goto error;
10641         }
10642
10643         ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL);
10644         if (!ntrig) {
10645                 err = -ENOMEM;
10646                 goto error;
10647         }
10648         cfg80211_rdev_free_wowlan(rdev);
10649         rdev->wiphy.wowlan_config = ntrig;
10650
10651  set_wakeup:
10652         if (rdev->ops->set_wakeup &&
10653             prev_enabled != !!rdev->wiphy.wowlan_config)
10654                 rdev_set_wakeup(rdev, rdev->wiphy.wowlan_config);
10655
10656         return 0;
10657  error:
10658         for (i = 0; i < new_triggers.n_patterns; i++)
10659                 kfree(new_triggers.patterns[i].mask);
10660         kfree(new_triggers.patterns);
10661         if (new_triggers.tcp && new_triggers.tcp->sock)
10662                 sock_release(new_triggers.tcp->sock);
10663         kfree(new_triggers.tcp);
10664         kfree(new_triggers.nd_config);
10665         return err;
10666 }
10667 #endif
10668
10669 static int nl80211_send_coalesce_rules(struct sk_buff *msg,
10670                                        struct cfg80211_registered_device *rdev)
10671 {
10672         struct nlattr *nl_pats, *nl_pat, *nl_rule, *nl_rules;
10673         int i, j, pat_len;
10674         struct cfg80211_coalesce_rules *rule;
10675
10676         if (!rdev->coalesce->n_rules)
10677                 return 0;
10678
10679         nl_rules = nla_nest_start(msg, NL80211_ATTR_COALESCE_RULE);
10680         if (!nl_rules)
10681                 return -ENOBUFS;
10682
10683         for (i = 0; i < rdev->coalesce->n_rules; i++) {
10684                 nl_rule = nla_nest_start(msg, i + 1);
10685                 if (!nl_rule)
10686                         return -ENOBUFS;
10687
10688                 rule = &rdev->coalesce->rules[i];
10689                 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_DELAY,
10690                                 rule->delay))
10691                         return -ENOBUFS;
10692
10693                 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_CONDITION,
10694                                 rule->condition))
10695                         return -ENOBUFS;
10696
10697                 nl_pats = nla_nest_start(msg,
10698                                 NL80211_ATTR_COALESCE_RULE_PKT_PATTERN);
10699                 if (!nl_pats)
10700                         return -ENOBUFS;
10701
10702                 for (j = 0; j < rule->n_patterns; j++) {
10703                         nl_pat = nla_nest_start(msg, j + 1);
10704                         if (!nl_pat)
10705                                 return -ENOBUFS;
10706                         pat_len = rule->patterns[j].pattern_len;
10707                         if (nla_put(msg, NL80211_PKTPAT_MASK,
10708                                     DIV_ROUND_UP(pat_len, 8),
10709                                     rule->patterns[j].mask) ||
10710                             nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
10711                                     rule->patterns[j].pattern) ||
10712                             nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
10713                                         rule->patterns[j].pkt_offset))
10714                                 return -ENOBUFS;
10715                         nla_nest_end(msg, nl_pat);
10716                 }
10717                 nla_nest_end(msg, nl_pats);
10718                 nla_nest_end(msg, nl_rule);
10719         }
10720         nla_nest_end(msg, nl_rules);
10721
10722         return 0;
10723 }
10724
10725 static int nl80211_get_coalesce(struct sk_buff *skb, struct genl_info *info)
10726 {
10727         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10728         struct sk_buff *msg;
10729         void *hdr;
10730
10731         if (!rdev->wiphy.coalesce)
10732                 return -EOPNOTSUPP;
10733
10734         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10735         if (!msg)
10736                 return -ENOMEM;
10737
10738         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
10739                              NL80211_CMD_GET_COALESCE);
10740         if (!hdr)
10741                 goto nla_put_failure;
10742
10743         if (rdev->coalesce && nl80211_send_coalesce_rules(msg, rdev))
10744                 goto nla_put_failure;
10745
10746         genlmsg_end(msg, hdr);
10747         return genlmsg_reply(msg, info);
10748
10749 nla_put_failure:
10750         nlmsg_free(msg);
10751         return -ENOBUFS;
10752 }
10753
10754 void cfg80211_rdev_free_coalesce(struct cfg80211_registered_device *rdev)
10755 {
10756         struct cfg80211_coalesce *coalesce = rdev->coalesce;
10757         int i, j;
10758         struct cfg80211_coalesce_rules *rule;
10759
10760         if (!coalesce)
10761                 return;
10762
10763         for (i = 0; i < coalesce->n_rules; i++) {
10764                 rule = &coalesce->rules[i];
10765                 for (j = 0; j < rule->n_patterns; j++)
10766                         kfree(rule->patterns[j].mask);
10767                 kfree(rule->patterns);
10768         }
10769         kfree(coalesce->rules);
10770         kfree(coalesce);
10771         rdev->coalesce = NULL;
10772 }
10773
10774 static int nl80211_parse_coalesce_rule(struct cfg80211_registered_device *rdev,
10775                                        struct nlattr *rule,
10776                                        struct cfg80211_coalesce_rules *new_rule)
10777 {
10778         int err, i;
10779         const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
10780         struct nlattr *tb[NUM_NL80211_ATTR_COALESCE_RULE], *pat;
10781         int rem, pat_len, mask_len, pkt_offset, n_patterns = 0;
10782         struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
10783
10784         err = nla_parse_nested(tb, NL80211_ATTR_COALESCE_RULE_MAX, rule,
10785                                nl80211_coalesce_policy, NULL);
10786         if (err)
10787                 return err;
10788
10789         if (tb[NL80211_ATTR_COALESCE_RULE_DELAY])
10790                 new_rule->delay =
10791                         nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_DELAY]);
10792         if (new_rule->delay > coalesce->max_delay)
10793                 return -EINVAL;
10794
10795         if (tb[NL80211_ATTR_COALESCE_RULE_CONDITION])
10796                 new_rule->condition =
10797                         nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_CONDITION]);
10798         if (new_rule->condition != NL80211_COALESCE_CONDITION_MATCH &&
10799             new_rule->condition != NL80211_COALESCE_CONDITION_NO_MATCH)
10800                 return -EINVAL;
10801
10802         if (!tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN])
10803                 return -EINVAL;
10804
10805         nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
10806                             rem)
10807                 n_patterns++;
10808         if (n_patterns > coalesce->n_patterns)
10809                 return -EINVAL;
10810
10811         new_rule->patterns = kcalloc(n_patterns, sizeof(new_rule->patterns[0]),
10812                                      GFP_KERNEL);
10813         if (!new_rule->patterns)
10814                 return -ENOMEM;
10815
10816         new_rule->n_patterns = n_patterns;
10817         i = 0;
10818
10819         nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
10820                             rem) {
10821                 u8 *mask_pat;
10822
10823                 nla_parse_nested(pat_tb, MAX_NL80211_PKTPAT, pat, NULL, NULL);
10824                 if (!pat_tb[NL80211_PKTPAT_MASK] ||
10825                     !pat_tb[NL80211_PKTPAT_PATTERN])
10826                         return -EINVAL;
10827                 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
10828                 mask_len = DIV_ROUND_UP(pat_len, 8);
10829                 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
10830                         return -EINVAL;
10831                 if (pat_len > coalesce->pattern_max_len ||
10832                     pat_len < coalesce->pattern_min_len)
10833                         return -EINVAL;
10834
10835                 if (!pat_tb[NL80211_PKTPAT_OFFSET])
10836                         pkt_offset = 0;
10837                 else
10838                         pkt_offset = nla_get_u32(pat_tb[NL80211_PKTPAT_OFFSET]);
10839                 if (pkt_offset > coalesce->max_pkt_offset)
10840                         return -EINVAL;
10841                 new_rule->patterns[i].pkt_offset = pkt_offset;
10842
10843                 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
10844                 if (!mask_pat)
10845                         return -ENOMEM;
10846
10847                 new_rule->patterns[i].mask = mask_pat;
10848                 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
10849                        mask_len);
10850
10851                 mask_pat += mask_len;
10852                 new_rule->patterns[i].pattern = mask_pat;
10853                 new_rule->patterns[i].pattern_len = pat_len;
10854                 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
10855                        pat_len);
10856                 i++;
10857         }
10858
10859         return 0;
10860 }
10861
10862 static int nl80211_set_coalesce(struct sk_buff *skb, struct genl_info *info)
10863 {
10864         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10865         const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
10866         struct cfg80211_coalesce new_coalesce = {};
10867         struct cfg80211_coalesce *n_coalesce;
10868         int err, rem_rule, n_rules = 0, i, j;
10869         struct nlattr *rule;
10870         struct cfg80211_coalesce_rules *tmp_rule;
10871
10872         if (!rdev->wiphy.coalesce || !rdev->ops->set_coalesce)
10873                 return -EOPNOTSUPP;
10874
10875         if (!info->attrs[NL80211_ATTR_COALESCE_RULE]) {
10876                 cfg80211_rdev_free_coalesce(rdev);
10877                 rdev_set_coalesce(rdev, NULL);
10878                 return 0;
10879         }
10880
10881         nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
10882                             rem_rule)
10883                 n_rules++;
10884         if (n_rules > coalesce->n_rules)
10885                 return -EINVAL;
10886
10887         new_coalesce.rules = kcalloc(n_rules, sizeof(new_coalesce.rules[0]),
10888                                      GFP_KERNEL);
10889         if (!new_coalesce.rules)
10890                 return -ENOMEM;
10891
10892         new_coalesce.n_rules = n_rules;
10893         i = 0;
10894
10895         nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
10896                             rem_rule) {
10897                 err = nl80211_parse_coalesce_rule(rdev, rule,
10898                                                   &new_coalesce.rules[i]);
10899                 if (err)
10900                         goto error;
10901
10902                 i++;
10903         }
10904
10905         err = rdev_set_coalesce(rdev, &new_coalesce);
10906         if (err)
10907                 goto error;
10908
10909         n_coalesce = kmemdup(&new_coalesce, sizeof(new_coalesce), GFP_KERNEL);
10910         if (!n_coalesce) {
10911                 err = -ENOMEM;
10912                 goto error;
10913         }
10914         cfg80211_rdev_free_coalesce(rdev);
10915         rdev->coalesce = n_coalesce;
10916
10917         return 0;
10918 error:
10919         for (i = 0; i < new_coalesce.n_rules; i++) {
10920                 tmp_rule = &new_coalesce.rules[i];
10921                 for (j = 0; j < tmp_rule->n_patterns; j++)
10922                         kfree(tmp_rule->patterns[j].mask);
10923                 kfree(tmp_rule->patterns);
10924         }
10925         kfree(new_coalesce.rules);
10926
10927         return err;
10928 }
10929
10930 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
10931 {
10932         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10933         struct net_device *dev = info->user_ptr[1];
10934         struct wireless_dev *wdev = dev->ieee80211_ptr;
10935         struct nlattr *tb[NUM_NL80211_REKEY_DATA];
10936         struct cfg80211_gtk_rekey_data rekey_data;
10937         int err;
10938
10939         if (!info->attrs[NL80211_ATTR_REKEY_DATA])
10940                 return -EINVAL;
10941
10942         err = nla_parse_nested(tb, MAX_NL80211_REKEY_DATA,
10943                                info->attrs[NL80211_ATTR_REKEY_DATA],
10944                                nl80211_rekey_policy, info->extack);
10945         if (err)
10946                 return err;
10947
10948         if (!tb[NL80211_REKEY_DATA_REPLAY_CTR] || !tb[NL80211_REKEY_DATA_KEK] ||
10949             !tb[NL80211_REKEY_DATA_KCK])
10950                 return -EINVAL;
10951         if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN)
10952                 return -ERANGE;
10953         if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN)
10954                 return -ERANGE;
10955         if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN)
10956                 return -ERANGE;
10957
10958         rekey_data.kek = nla_data(tb[NL80211_REKEY_DATA_KEK]);
10959         rekey_data.kck = nla_data(tb[NL80211_REKEY_DATA_KCK]);
10960         rekey_data.replay_ctr = nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]);
10961
10962         wdev_lock(wdev);
10963         if (!wdev->current_bss) {
10964                 err = -ENOTCONN;
10965                 goto out;
10966         }
10967
10968         if (!rdev->ops->set_rekey_data) {
10969                 err = -EOPNOTSUPP;
10970                 goto out;
10971         }
10972
10973         err = rdev_set_rekey_data(rdev, dev, &rekey_data);
10974  out:
10975         wdev_unlock(wdev);
10976         return err;
10977 }
10978
10979 static int nl80211_register_unexpected_frame(struct sk_buff *skb,
10980                                              struct genl_info *info)
10981 {
10982         struct net_device *dev = info->user_ptr[1];
10983         struct wireless_dev *wdev = dev->ieee80211_ptr;
10984
10985         if (wdev->iftype != NL80211_IFTYPE_AP &&
10986             wdev->iftype != NL80211_IFTYPE_P2P_GO)
10987                 return -EINVAL;
10988
10989         if (wdev->ap_unexpected_nlportid)
10990                 return -EBUSY;
10991
10992         wdev->ap_unexpected_nlportid = info->snd_portid;
10993         return 0;
10994 }
10995
10996 static int nl80211_probe_client(struct sk_buff *skb,
10997                                 struct genl_info *info)
10998 {
10999         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11000         struct net_device *dev = info->user_ptr[1];
11001         struct wireless_dev *wdev = dev->ieee80211_ptr;
11002         struct sk_buff *msg;
11003         void *hdr;
11004         const u8 *addr;
11005         u64 cookie;
11006         int err;
11007
11008         if (wdev->iftype != NL80211_IFTYPE_AP &&
11009             wdev->iftype != NL80211_IFTYPE_P2P_GO)
11010                 return -EOPNOTSUPP;
11011
11012         if (!info->attrs[NL80211_ATTR_MAC])
11013                 return -EINVAL;
11014
11015         if (!rdev->ops->probe_client)
11016                 return -EOPNOTSUPP;
11017
11018         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11019         if (!msg)
11020                 return -ENOMEM;
11021
11022         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
11023                              NL80211_CMD_PROBE_CLIENT);
11024         if (!hdr) {
11025                 err = -ENOBUFS;
11026                 goto free_msg;
11027         }
11028
11029         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
11030
11031         err = rdev_probe_client(rdev, dev, addr, &cookie);
11032         if (err)
11033                 goto free_msg;
11034
11035         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
11036                               NL80211_ATTR_PAD))
11037                 goto nla_put_failure;
11038
11039         genlmsg_end(msg, hdr);
11040
11041         return genlmsg_reply(msg, info);
11042
11043  nla_put_failure:
11044         err = -ENOBUFS;
11045  free_msg:
11046         nlmsg_free(msg);
11047         return err;
11048 }
11049
11050 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
11051 {
11052         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11053         struct cfg80211_beacon_registration *reg, *nreg;
11054         int rv;
11055
11056         if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS))
11057                 return -EOPNOTSUPP;
11058
11059         nreg = kzalloc(sizeof(*nreg), GFP_KERNEL);
11060         if (!nreg)
11061                 return -ENOMEM;
11062
11063         /* First, check if already registered. */
11064         spin_lock_bh(&rdev->beacon_registrations_lock);
11065         list_for_each_entry(reg, &rdev->beacon_registrations, list) {
11066                 if (reg->nlportid == info->snd_portid) {
11067                         rv = -EALREADY;
11068                         goto out_err;
11069                 }
11070         }
11071         /* Add it to the list */
11072         nreg->nlportid = info->snd_portid;
11073         list_add(&nreg->list, &rdev->beacon_registrations);
11074
11075         spin_unlock_bh(&rdev->beacon_registrations_lock);
11076
11077         return 0;
11078 out_err:
11079         spin_unlock_bh(&rdev->beacon_registrations_lock);
11080         kfree(nreg);
11081         return rv;
11082 }
11083
11084 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info)
11085 {
11086         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11087         struct wireless_dev *wdev = info->user_ptr[1];
11088         int err;
11089
11090         if (!rdev->ops->start_p2p_device)
11091                 return -EOPNOTSUPP;
11092
11093         if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
11094                 return -EOPNOTSUPP;
11095
11096         if (wdev_running(wdev))
11097                 return 0;
11098
11099         if (rfkill_blocked(rdev->rfkill))
11100                 return -ERFKILL;
11101
11102         err = rdev_start_p2p_device(rdev, wdev);
11103         if (err)
11104                 return err;
11105
11106         wdev->is_running = true;
11107         rdev->opencount++;
11108
11109         return 0;
11110 }
11111
11112 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info)
11113 {
11114         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11115         struct wireless_dev *wdev = info->user_ptr[1];
11116
11117         if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
11118                 return -EOPNOTSUPP;
11119
11120         if (!rdev->ops->stop_p2p_device)
11121                 return -EOPNOTSUPP;
11122
11123         cfg80211_stop_p2p_device(rdev, wdev);
11124
11125         return 0;
11126 }
11127
11128 static int nl80211_start_nan(struct sk_buff *skb, struct genl_info *info)
11129 {
11130         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11131         struct wireless_dev *wdev = info->user_ptr[1];
11132         struct cfg80211_nan_conf conf = {};
11133         int err;
11134
11135         if (wdev->iftype != NL80211_IFTYPE_NAN)
11136                 return -EOPNOTSUPP;
11137
11138         if (wdev_running(wdev))
11139                 return -EEXIST;
11140
11141         if (rfkill_blocked(rdev->rfkill))
11142                 return -ERFKILL;
11143
11144         if (!info->attrs[NL80211_ATTR_NAN_MASTER_PREF])
11145                 return -EINVAL;
11146
11147         conf.master_pref =
11148                 nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]);
11149         if (!conf.master_pref)
11150                 return -EINVAL;
11151
11152         if (info->attrs[NL80211_ATTR_BANDS]) {
11153                 u32 bands = nla_get_u32(info->attrs[NL80211_ATTR_BANDS]);
11154
11155                 if (bands & ~(u32)wdev->wiphy->nan_supported_bands)
11156                         return -EOPNOTSUPP;
11157
11158                 if (bands && !(bands & BIT(NL80211_BAND_2GHZ)))
11159                         return -EINVAL;
11160
11161                 conf.bands = bands;
11162         }
11163
11164         err = rdev_start_nan(rdev, wdev, &conf);
11165         if (err)
11166                 return err;
11167
11168         wdev->is_running = true;
11169         rdev->opencount++;
11170
11171         return 0;
11172 }
11173
11174 static int nl80211_stop_nan(struct sk_buff *skb, struct genl_info *info)
11175 {
11176         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11177         struct wireless_dev *wdev = info->user_ptr[1];
11178
11179         if (wdev->iftype != NL80211_IFTYPE_NAN)
11180                 return -EOPNOTSUPP;
11181
11182         cfg80211_stop_nan(rdev, wdev);
11183
11184         return 0;
11185 }
11186
11187 static int validate_nan_filter(struct nlattr *filter_attr)
11188 {
11189         struct nlattr *attr;
11190         int len = 0, n_entries = 0, rem;
11191
11192         nla_for_each_nested(attr, filter_attr, rem) {
11193                 len += nla_len(attr);
11194                 n_entries++;
11195         }
11196
11197         if (len >= U8_MAX)
11198                 return -EINVAL;
11199
11200         return n_entries;
11201 }
11202
11203 static int handle_nan_filter(struct nlattr *attr_filter,
11204                              struct cfg80211_nan_func *func,
11205                              bool tx)
11206 {
11207         struct nlattr *attr;
11208         int n_entries, rem, i;
11209         struct cfg80211_nan_func_filter *filter;
11210
11211         n_entries = validate_nan_filter(attr_filter);
11212         if (n_entries < 0)
11213                 return n_entries;
11214
11215         BUILD_BUG_ON(sizeof(*func->rx_filters) != sizeof(*func->tx_filters));
11216
11217         filter = kcalloc(n_entries, sizeof(*func->rx_filters), GFP_KERNEL);
11218         if (!filter)
11219                 return -ENOMEM;
11220
11221         i = 0;
11222         nla_for_each_nested(attr, attr_filter, rem) {
11223                 filter[i].filter = nla_memdup(attr, GFP_KERNEL);
11224                 filter[i].len = nla_len(attr);
11225                 i++;
11226         }
11227         if (tx) {
11228                 func->num_tx_filters = n_entries;
11229                 func->tx_filters = filter;
11230         } else {
11231                 func->num_rx_filters = n_entries;
11232                 func->rx_filters = filter;
11233         }
11234
11235         return 0;
11236 }
11237
11238 static int nl80211_nan_add_func(struct sk_buff *skb,
11239                                 struct genl_info *info)
11240 {
11241         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11242         struct wireless_dev *wdev = info->user_ptr[1];
11243         struct nlattr *tb[NUM_NL80211_NAN_FUNC_ATTR], *func_attr;
11244         struct cfg80211_nan_func *func;
11245         struct sk_buff *msg = NULL;
11246         void *hdr = NULL;
11247         int err = 0;
11248
11249         if (wdev->iftype != NL80211_IFTYPE_NAN)
11250                 return -EOPNOTSUPP;
11251
11252         if (!wdev_running(wdev))
11253                 return -ENOTCONN;
11254
11255         if (!info->attrs[NL80211_ATTR_NAN_FUNC])
11256                 return -EINVAL;
11257
11258         err = nla_parse_nested(tb, NL80211_NAN_FUNC_ATTR_MAX,
11259                                info->attrs[NL80211_ATTR_NAN_FUNC],
11260                                nl80211_nan_func_policy, info->extack);
11261         if (err)
11262                 return err;
11263
11264         func = kzalloc(sizeof(*func), GFP_KERNEL);
11265         if (!func)
11266                 return -ENOMEM;
11267
11268         func->cookie = wdev->wiphy->cookie_counter++;
11269
11270         if (!tb[NL80211_NAN_FUNC_TYPE] ||
11271             nla_get_u8(tb[NL80211_NAN_FUNC_TYPE]) > NL80211_NAN_FUNC_MAX_TYPE) {
11272                 err = -EINVAL;
11273                 goto out;
11274         }
11275
11276
11277         func->type = nla_get_u8(tb[NL80211_NAN_FUNC_TYPE]);
11278
11279         if (!tb[NL80211_NAN_FUNC_SERVICE_ID]) {
11280                 err = -EINVAL;
11281                 goto out;
11282         }
11283
11284         memcpy(func->service_id, nla_data(tb[NL80211_NAN_FUNC_SERVICE_ID]),
11285                sizeof(func->service_id));
11286
11287         func->close_range =
11288                 nla_get_flag(tb[NL80211_NAN_FUNC_CLOSE_RANGE]);
11289
11290         if (tb[NL80211_NAN_FUNC_SERVICE_INFO]) {
11291                 func->serv_spec_info_len =
11292                         nla_len(tb[NL80211_NAN_FUNC_SERVICE_INFO]);
11293                 func->serv_spec_info =
11294                         kmemdup(nla_data(tb[NL80211_NAN_FUNC_SERVICE_INFO]),
11295                                 func->serv_spec_info_len,
11296                                 GFP_KERNEL);
11297                 if (!func->serv_spec_info) {
11298                         err = -ENOMEM;
11299                         goto out;
11300                 }
11301         }
11302
11303         if (tb[NL80211_NAN_FUNC_TTL])
11304                 func->ttl = nla_get_u32(tb[NL80211_NAN_FUNC_TTL]);
11305
11306         switch (func->type) {
11307         case NL80211_NAN_FUNC_PUBLISH:
11308                 if (!tb[NL80211_NAN_FUNC_PUBLISH_TYPE]) {
11309                         err = -EINVAL;
11310                         goto out;
11311                 }
11312
11313                 func->publish_type =
11314                         nla_get_u8(tb[NL80211_NAN_FUNC_PUBLISH_TYPE]);
11315                 func->publish_bcast =
11316                         nla_get_flag(tb[NL80211_NAN_FUNC_PUBLISH_BCAST]);
11317
11318                 if ((!(func->publish_type & NL80211_NAN_SOLICITED_PUBLISH)) &&
11319                         func->publish_bcast) {
11320                         err = -EINVAL;
11321                         goto out;
11322                 }
11323                 break;
11324         case NL80211_NAN_FUNC_SUBSCRIBE:
11325                 func->subscribe_active =
11326                         nla_get_flag(tb[NL80211_NAN_FUNC_SUBSCRIBE_ACTIVE]);
11327                 break;
11328         case NL80211_NAN_FUNC_FOLLOW_UP:
11329                 if (!tb[NL80211_NAN_FUNC_FOLLOW_UP_ID] ||
11330                     !tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID]) {
11331                         err = -EINVAL;
11332                         goto out;
11333                 }
11334
11335                 func->followup_id =
11336                         nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_ID]);
11337                 func->followup_reqid =
11338                         nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID]);
11339                 memcpy(func->followup_dest.addr,
11340                        nla_data(tb[NL80211_NAN_FUNC_FOLLOW_UP_DEST]),
11341                        sizeof(func->followup_dest.addr));
11342                 if (func->ttl) {
11343                         err = -EINVAL;
11344                         goto out;
11345                 }
11346                 break;
11347         default:
11348                 err = -EINVAL;
11349                 goto out;
11350         }
11351
11352         if (tb[NL80211_NAN_FUNC_SRF]) {
11353                 struct nlattr *srf_tb[NUM_NL80211_NAN_SRF_ATTR];
11354
11355                 err = nla_parse_nested(srf_tb, NL80211_NAN_SRF_ATTR_MAX,
11356                                        tb[NL80211_NAN_FUNC_SRF],
11357                                        nl80211_nan_srf_policy, info->extack);
11358                 if (err)
11359                         goto out;
11360
11361                 func->srf_include =
11362                         nla_get_flag(srf_tb[NL80211_NAN_SRF_INCLUDE]);
11363
11364                 if (srf_tb[NL80211_NAN_SRF_BF]) {
11365                         if (srf_tb[NL80211_NAN_SRF_MAC_ADDRS] ||
11366                             !srf_tb[NL80211_NAN_SRF_BF_IDX]) {
11367                                 err = -EINVAL;
11368                                 goto out;
11369                         }
11370
11371                         func->srf_bf_len =
11372                                 nla_len(srf_tb[NL80211_NAN_SRF_BF]);
11373                         func->srf_bf =
11374                                 kmemdup(nla_data(srf_tb[NL80211_NAN_SRF_BF]),
11375                                         func->srf_bf_len, GFP_KERNEL);
11376                         if (!func->srf_bf) {
11377                                 err = -ENOMEM;
11378                                 goto out;
11379                         }
11380
11381                         func->srf_bf_idx =
11382                                 nla_get_u8(srf_tb[NL80211_NAN_SRF_BF_IDX]);
11383                 } else {
11384                         struct nlattr *attr, *mac_attr =
11385                                 srf_tb[NL80211_NAN_SRF_MAC_ADDRS];
11386                         int n_entries, rem, i = 0;
11387
11388                         if (!mac_attr) {
11389                                 err = -EINVAL;
11390                                 goto out;
11391                         }
11392
11393                         n_entries = validate_acl_mac_addrs(mac_attr);
11394                         if (n_entries <= 0) {
11395                                 err = -EINVAL;
11396                                 goto out;
11397                         }
11398
11399                         func->srf_num_macs = n_entries;
11400                         func->srf_macs =
11401                                 kzalloc(sizeof(*func->srf_macs) * n_entries,
11402                                         GFP_KERNEL);
11403                         if (!func->srf_macs) {
11404                                 err = -ENOMEM;
11405                                 goto out;
11406                         }
11407
11408                         nla_for_each_nested(attr, mac_attr, rem)
11409                                 memcpy(func->srf_macs[i++].addr, nla_data(attr),
11410                                        sizeof(*func->srf_macs));
11411                 }
11412         }
11413
11414         if (tb[NL80211_NAN_FUNC_TX_MATCH_FILTER]) {
11415                 err = handle_nan_filter(tb[NL80211_NAN_FUNC_TX_MATCH_FILTER],
11416                                         func, true);
11417                 if (err)
11418                         goto out;
11419         }
11420
11421         if (tb[NL80211_NAN_FUNC_RX_MATCH_FILTER]) {
11422                 err = handle_nan_filter(tb[NL80211_NAN_FUNC_RX_MATCH_FILTER],
11423                                         func, false);
11424                 if (err)
11425                         goto out;
11426         }
11427
11428         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11429         if (!msg) {
11430                 err = -ENOMEM;
11431                 goto out;
11432         }
11433
11434         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
11435                              NL80211_CMD_ADD_NAN_FUNCTION);
11436         /* This can't really happen - we just allocated 4KB */
11437         if (WARN_ON(!hdr)) {
11438                 err = -ENOMEM;
11439                 goto out;
11440         }
11441
11442         err = rdev_add_nan_func(rdev, wdev, func);
11443 out:
11444         if (err < 0) {
11445                 cfg80211_free_nan_func(func);
11446                 nlmsg_free(msg);
11447                 return err;
11448         }
11449
11450         /* propagate the instance id and cookie to userspace  */
11451         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, func->cookie,
11452                               NL80211_ATTR_PAD))
11453                 goto nla_put_failure;
11454
11455         func_attr = nla_nest_start(msg, NL80211_ATTR_NAN_FUNC);
11456         if (!func_attr)
11457                 goto nla_put_failure;
11458
11459         if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID,
11460                        func->instance_id))
11461                 goto nla_put_failure;
11462
11463         nla_nest_end(msg, func_attr);
11464
11465         genlmsg_end(msg, hdr);
11466         return genlmsg_reply(msg, info);
11467
11468 nla_put_failure:
11469         nlmsg_free(msg);
11470         return -ENOBUFS;
11471 }
11472
11473 static int nl80211_nan_del_func(struct sk_buff *skb,
11474                                struct genl_info *info)
11475 {
11476         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11477         struct wireless_dev *wdev = info->user_ptr[1];
11478         u64 cookie;
11479
11480         if (wdev->iftype != NL80211_IFTYPE_NAN)
11481                 return -EOPNOTSUPP;
11482
11483         if (!wdev_running(wdev))
11484                 return -ENOTCONN;
11485
11486         if (!info->attrs[NL80211_ATTR_COOKIE])
11487                 return -EINVAL;
11488
11489         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
11490
11491         rdev_del_nan_func(rdev, wdev, cookie);
11492
11493         return 0;
11494 }
11495
11496 static int nl80211_nan_change_config(struct sk_buff *skb,
11497                                      struct genl_info *info)
11498 {
11499         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11500         struct wireless_dev *wdev = info->user_ptr[1];
11501         struct cfg80211_nan_conf conf = {};
11502         u32 changed = 0;
11503
11504         if (wdev->iftype != NL80211_IFTYPE_NAN)
11505                 return -EOPNOTSUPP;
11506
11507         if (!wdev_running(wdev))
11508                 return -ENOTCONN;
11509
11510         if (info->attrs[NL80211_ATTR_NAN_MASTER_PREF]) {
11511                 conf.master_pref =
11512                         nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]);
11513                 if (conf.master_pref <= 1 || conf.master_pref == 255)
11514                         return -EINVAL;
11515
11516                 changed |= CFG80211_NAN_CONF_CHANGED_PREF;
11517         }
11518
11519         if (info->attrs[NL80211_ATTR_BANDS]) {
11520                 u32 bands = nla_get_u32(info->attrs[NL80211_ATTR_BANDS]);
11521
11522                 if (bands & ~(u32)wdev->wiphy->nan_supported_bands)
11523                         return -EOPNOTSUPP;
11524
11525                 if (bands && !(bands & BIT(NL80211_BAND_2GHZ)))
11526                         return -EINVAL;
11527
11528                 conf.bands = bands;
11529                 changed |= CFG80211_NAN_CONF_CHANGED_BANDS;
11530         }
11531
11532         if (!changed)
11533                 return -EINVAL;
11534
11535         return rdev_nan_change_conf(rdev, wdev, &conf, changed);
11536 }
11537
11538 void cfg80211_nan_match(struct wireless_dev *wdev,
11539                         struct cfg80211_nan_match_params *match, gfp_t gfp)
11540 {
11541         struct wiphy *wiphy = wdev->wiphy;
11542         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11543         struct nlattr *match_attr, *local_func_attr, *peer_func_attr;
11544         struct sk_buff *msg;
11545         void *hdr;
11546
11547         if (WARN_ON(!match->inst_id || !match->peer_inst_id || !match->addr))
11548                 return;
11549
11550         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11551         if (!msg)
11552                 return;
11553
11554         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NAN_MATCH);
11555         if (!hdr) {
11556                 nlmsg_free(msg);
11557                 return;
11558         }
11559
11560         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11561             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11562                                          wdev->netdev->ifindex)) ||
11563             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
11564                               NL80211_ATTR_PAD))
11565                 goto nla_put_failure;
11566
11567         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, match->cookie,
11568                               NL80211_ATTR_PAD) ||
11569             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, match->addr))
11570                 goto nla_put_failure;
11571
11572         match_attr = nla_nest_start(msg, NL80211_ATTR_NAN_MATCH);
11573         if (!match_attr)
11574                 goto nla_put_failure;
11575
11576         local_func_attr = nla_nest_start(msg, NL80211_NAN_MATCH_FUNC_LOCAL);
11577         if (!local_func_attr)
11578                 goto nla_put_failure;
11579
11580         if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->inst_id))
11581                 goto nla_put_failure;
11582
11583         nla_nest_end(msg, local_func_attr);
11584
11585         peer_func_attr = nla_nest_start(msg, NL80211_NAN_MATCH_FUNC_PEER);
11586         if (!peer_func_attr)
11587                 goto nla_put_failure;
11588
11589         if (nla_put_u8(msg, NL80211_NAN_FUNC_TYPE, match->type) ||
11590             nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->peer_inst_id))
11591                 goto nla_put_failure;
11592
11593         if (match->info && match->info_len &&
11594             nla_put(msg, NL80211_NAN_FUNC_SERVICE_INFO, match->info_len,
11595                     match->info))
11596                 goto nla_put_failure;
11597
11598         nla_nest_end(msg, peer_func_attr);
11599         nla_nest_end(msg, match_attr);
11600         genlmsg_end(msg, hdr);
11601
11602         if (!wdev->owner_nlportid)
11603                 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
11604                                         msg, 0, NL80211_MCGRP_NAN, gfp);
11605         else
11606                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
11607                                 wdev->owner_nlportid);
11608
11609         return;
11610
11611 nla_put_failure:
11612         nlmsg_free(msg);
11613 }
11614 EXPORT_SYMBOL(cfg80211_nan_match);
11615
11616 void cfg80211_nan_func_terminated(struct wireless_dev *wdev,
11617                                   u8 inst_id,
11618                                   enum nl80211_nan_func_term_reason reason,
11619                                   u64 cookie, gfp_t gfp)
11620 {
11621         struct wiphy *wiphy = wdev->wiphy;
11622         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11623         struct sk_buff *msg;
11624         struct nlattr *func_attr;
11625         void *hdr;
11626
11627         if (WARN_ON(!inst_id))
11628                 return;
11629
11630         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11631         if (!msg)
11632                 return;
11633
11634         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_NAN_FUNCTION);
11635         if (!hdr) {
11636                 nlmsg_free(msg);
11637                 return;
11638         }
11639
11640         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11641             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11642                                          wdev->netdev->ifindex)) ||
11643             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
11644                               NL80211_ATTR_PAD))
11645                 goto nla_put_failure;
11646
11647         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
11648                               NL80211_ATTR_PAD))
11649                 goto nla_put_failure;
11650
11651         func_attr = nla_nest_start(msg, NL80211_ATTR_NAN_FUNC);
11652         if (!func_attr)
11653                 goto nla_put_failure;
11654
11655         if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, inst_id) ||
11656             nla_put_u8(msg, NL80211_NAN_FUNC_TERM_REASON, reason))
11657                 goto nla_put_failure;
11658
11659         nla_nest_end(msg, func_attr);
11660         genlmsg_end(msg, hdr);
11661
11662         if (!wdev->owner_nlportid)
11663                 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
11664                                         msg, 0, NL80211_MCGRP_NAN, gfp);
11665         else
11666                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
11667                                 wdev->owner_nlportid);
11668
11669         return;
11670
11671 nla_put_failure:
11672         nlmsg_free(msg);
11673 }
11674 EXPORT_SYMBOL(cfg80211_nan_func_terminated);
11675
11676 static int nl80211_get_protocol_features(struct sk_buff *skb,
11677                                          struct genl_info *info)
11678 {
11679         void *hdr;
11680         struct sk_buff *msg;
11681
11682         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11683         if (!msg)
11684                 return -ENOMEM;
11685
11686         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
11687                              NL80211_CMD_GET_PROTOCOL_FEATURES);
11688         if (!hdr)
11689                 goto nla_put_failure;
11690
11691         if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES,
11692                         NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP))
11693                 goto nla_put_failure;
11694
11695         genlmsg_end(msg, hdr);
11696         return genlmsg_reply(msg, info);
11697
11698  nla_put_failure:
11699         kfree_skb(msg);
11700         return -ENOBUFS;
11701 }
11702
11703 static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info)
11704 {
11705         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11706         struct cfg80211_update_ft_ies_params ft_params;
11707         struct net_device *dev = info->user_ptr[1];
11708
11709         if (!rdev->ops->update_ft_ies)
11710                 return -EOPNOTSUPP;
11711
11712         if (!info->attrs[NL80211_ATTR_MDID] ||
11713             !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
11714                 return -EINVAL;
11715
11716         memset(&ft_params, 0, sizeof(ft_params));
11717         ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]);
11718         ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
11719         ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
11720
11721         return rdev_update_ft_ies(rdev, dev, &ft_params);
11722 }
11723
11724 static int nl80211_crit_protocol_start(struct sk_buff *skb,
11725                                        struct genl_info *info)
11726 {
11727         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11728         struct wireless_dev *wdev = info->user_ptr[1];
11729         enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC;
11730         u16 duration;
11731         int ret;
11732
11733         if (!rdev->ops->crit_proto_start)
11734                 return -EOPNOTSUPP;
11735
11736         if (WARN_ON(!rdev->ops->crit_proto_stop))
11737                 return -EINVAL;
11738
11739         if (rdev->crit_proto_nlportid)
11740                 return -EBUSY;
11741
11742         /* determine protocol if provided */
11743         if (info->attrs[NL80211_ATTR_CRIT_PROT_ID])
11744                 proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]);
11745
11746         if (proto >= NUM_NL80211_CRIT_PROTO)
11747                 return -EINVAL;
11748
11749         /* timeout must be provided */
11750         if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION])
11751                 return -EINVAL;
11752
11753         duration =
11754                 nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]);
11755
11756         if (duration > NL80211_CRIT_PROTO_MAX_DURATION)
11757                 return -ERANGE;
11758
11759         ret = rdev_crit_proto_start(rdev, wdev, proto, duration);
11760         if (!ret)
11761                 rdev->crit_proto_nlportid = info->snd_portid;
11762
11763         return ret;
11764 }
11765
11766 static int nl80211_crit_protocol_stop(struct sk_buff *skb,
11767                                       struct genl_info *info)
11768 {
11769         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11770         struct wireless_dev *wdev = info->user_ptr[1];
11771
11772         if (!rdev->ops->crit_proto_stop)
11773                 return -EOPNOTSUPP;
11774
11775         if (rdev->crit_proto_nlportid) {
11776                 rdev->crit_proto_nlportid = 0;
11777                 rdev_crit_proto_stop(rdev, wdev);
11778         }
11779         return 0;
11780 }
11781
11782 static int nl80211_vendor_cmd(struct sk_buff *skb, struct genl_info *info)
11783 {
11784         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11785         struct wireless_dev *wdev =
11786                 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
11787         int i, err;
11788         u32 vid, subcmd;
11789
11790         if (!rdev->wiphy.vendor_commands)
11791                 return -EOPNOTSUPP;
11792
11793         if (IS_ERR(wdev)) {
11794                 err = PTR_ERR(wdev);
11795                 if (err != -EINVAL)
11796                         return err;
11797                 wdev = NULL;
11798         } else if (wdev->wiphy != &rdev->wiphy) {
11799                 return -EINVAL;
11800         }
11801
11802         if (!info->attrs[NL80211_ATTR_VENDOR_ID] ||
11803             !info->attrs[NL80211_ATTR_VENDOR_SUBCMD])
11804                 return -EINVAL;
11805
11806         vid = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_ID]);
11807         subcmd = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_SUBCMD]);
11808         for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
11809                 const struct wiphy_vendor_command *vcmd;
11810                 void *data = NULL;
11811                 int len = 0;
11812
11813                 vcmd = &rdev->wiphy.vendor_commands[i];
11814
11815                 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
11816                         continue;
11817
11818                 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
11819                                    WIPHY_VENDOR_CMD_NEED_NETDEV)) {
11820                         if (!wdev)
11821                                 return -EINVAL;
11822                         if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
11823                             !wdev->netdev)
11824                                 return -EINVAL;
11825
11826                         if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
11827                                 if (!wdev_running(wdev))
11828                                         return -ENETDOWN;
11829                         }
11830
11831                         if (!vcmd->doit)
11832                                 return -EOPNOTSUPP;
11833                 } else {
11834                         wdev = NULL;
11835                 }
11836
11837                 if (info->attrs[NL80211_ATTR_VENDOR_DATA]) {
11838                         data = nla_data(info->attrs[NL80211_ATTR_VENDOR_DATA]);
11839                         len = nla_len(info->attrs[NL80211_ATTR_VENDOR_DATA]);
11840                 }
11841
11842                 rdev->cur_cmd_info = info;
11843                 err = rdev->wiphy.vendor_commands[i].doit(&rdev->wiphy, wdev,
11844                                                           data, len);
11845                 rdev->cur_cmd_info = NULL;
11846                 return err;
11847         }
11848
11849         return -EOPNOTSUPP;
11850 }
11851
11852 static int nl80211_prepare_vendor_dump(struct sk_buff *skb,
11853                                        struct netlink_callback *cb,
11854                                        struct cfg80211_registered_device **rdev,
11855                                        struct wireless_dev **wdev)
11856 {
11857         struct nlattr **attrbuf = genl_family_attrbuf(&nl80211_fam);
11858         u32 vid, subcmd;
11859         unsigned int i;
11860         int vcmd_idx = -1;
11861         int err;
11862         void *data = NULL;
11863         unsigned int data_len = 0;
11864
11865         if (cb->args[0]) {
11866                 /* subtract the 1 again here */
11867                 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
11868                 struct wireless_dev *tmp;
11869
11870                 if (!wiphy)
11871                         return -ENODEV;
11872                 *rdev = wiphy_to_rdev(wiphy);
11873                 *wdev = NULL;
11874
11875                 if (cb->args[1]) {
11876                         list_for_each_entry(tmp, &wiphy->wdev_list, list) {
11877                                 if (tmp->identifier == cb->args[1] - 1) {
11878                                         *wdev = tmp;
11879                                         break;
11880                                 }
11881                         }
11882                 }
11883
11884                 /* keep rtnl locked in successful case */
11885                 return 0;
11886         }
11887
11888         err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize, attrbuf,
11889                           nl80211_fam.maxattr, nl80211_policy, NULL);
11890         if (err)
11891                 return err;
11892
11893         if (!attrbuf[NL80211_ATTR_VENDOR_ID] ||
11894             !attrbuf[NL80211_ATTR_VENDOR_SUBCMD])
11895                 return -EINVAL;
11896
11897         *wdev = __cfg80211_wdev_from_attrs(sock_net(skb->sk), attrbuf);
11898         if (IS_ERR(*wdev))
11899                 *wdev = NULL;
11900
11901         *rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf);
11902         if (IS_ERR(*rdev))
11903                 return PTR_ERR(*rdev);
11904
11905         vid = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_ID]);
11906         subcmd = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_SUBCMD]);
11907
11908         for (i = 0; i < (*rdev)->wiphy.n_vendor_commands; i++) {
11909                 const struct wiphy_vendor_command *vcmd;
11910
11911                 vcmd = &(*rdev)->wiphy.vendor_commands[i];
11912
11913                 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
11914                         continue;
11915
11916                 if (!vcmd->dumpit)
11917                         return -EOPNOTSUPP;
11918
11919                 vcmd_idx = i;
11920                 break;
11921         }
11922
11923         if (vcmd_idx < 0)
11924                 return -EOPNOTSUPP;
11925
11926         if (attrbuf[NL80211_ATTR_VENDOR_DATA]) {
11927                 data = nla_data(attrbuf[NL80211_ATTR_VENDOR_DATA]);
11928                 data_len = nla_len(attrbuf[NL80211_ATTR_VENDOR_DATA]);
11929         }
11930
11931         /* 0 is the first index - add 1 to parse only once */
11932         cb->args[0] = (*rdev)->wiphy_idx + 1;
11933         /* add 1 to know if it was NULL */
11934         cb->args[1] = *wdev ? (*wdev)->identifier + 1 : 0;
11935         cb->args[2] = vcmd_idx;
11936         cb->args[3] = (unsigned long)data;
11937         cb->args[4] = data_len;
11938
11939         /* keep rtnl locked in successful case */
11940         return 0;
11941 }
11942
11943 static int nl80211_vendor_cmd_dump(struct sk_buff *skb,
11944                                    struct netlink_callback *cb)
11945 {
11946         struct cfg80211_registered_device *rdev;
11947         struct wireless_dev *wdev;
11948         unsigned int vcmd_idx;
11949         const struct wiphy_vendor_command *vcmd;
11950         void *data;
11951         int data_len;
11952         int err;
11953         struct nlattr *vendor_data;
11954
11955         rtnl_lock();
11956         err = nl80211_prepare_vendor_dump(skb, cb, &rdev, &wdev);
11957         if (err)
11958                 goto out;
11959
11960         vcmd_idx = cb->args[2];
11961         data = (void *)cb->args[3];
11962         data_len = cb->args[4];
11963         vcmd = &rdev->wiphy.vendor_commands[vcmd_idx];
11964
11965         if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
11966                            WIPHY_VENDOR_CMD_NEED_NETDEV)) {
11967                 if (!wdev) {
11968                         err = -EINVAL;
11969                         goto out;
11970                 }
11971                 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
11972                     !wdev->netdev) {
11973                         err = -EINVAL;
11974                         goto out;
11975                 }
11976
11977                 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
11978                         if (!wdev_running(wdev)) {
11979                                 err = -ENETDOWN;
11980                                 goto out;
11981                         }
11982                 }
11983         }
11984
11985         while (1) {
11986                 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
11987                                            cb->nlh->nlmsg_seq, NLM_F_MULTI,
11988                                            NL80211_CMD_VENDOR);
11989                 if (!hdr)
11990                         break;
11991
11992                 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11993                     (wdev && nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
11994                                                wdev_id(wdev),
11995                                                NL80211_ATTR_PAD))) {
11996                         genlmsg_cancel(skb, hdr);
11997                         break;
11998                 }
11999
12000                 vendor_data = nla_nest_start(skb, NL80211_ATTR_VENDOR_DATA);
12001                 if (!vendor_data) {
12002                         genlmsg_cancel(skb, hdr);
12003                         break;
12004                 }
12005
12006                 err = vcmd->dumpit(&rdev->wiphy, wdev, skb, data, data_len,
12007                                    (unsigned long *)&cb->args[5]);
12008                 nla_nest_end(skb, vendor_data);
12009
12010                 if (err == -ENOBUFS || err == -ENOENT) {
12011                         genlmsg_cancel(skb, hdr);
12012                         break;
12013                 } else if (err) {
12014                         genlmsg_cancel(skb, hdr);
12015                         goto out;
12016                 }
12017
12018                 genlmsg_end(skb, hdr);
12019         }
12020
12021         err = skb->len;
12022  out:
12023         rtnl_unlock();
12024         return err;
12025 }
12026
12027 struct sk_buff *__cfg80211_alloc_reply_skb(struct wiphy *wiphy,
12028                                            enum nl80211_commands cmd,
12029                                            enum nl80211_attrs attr,
12030                                            int approxlen)
12031 {
12032         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12033
12034         if (WARN_ON(!rdev->cur_cmd_info))
12035                 return NULL;
12036
12037         return __cfg80211_alloc_vendor_skb(rdev, NULL, approxlen,
12038                                            rdev->cur_cmd_info->snd_portid,
12039                                            rdev->cur_cmd_info->snd_seq,
12040                                            cmd, attr, NULL, GFP_KERNEL);
12041 }
12042 EXPORT_SYMBOL(__cfg80211_alloc_reply_skb);
12043
12044 int cfg80211_vendor_cmd_reply(struct sk_buff *skb)
12045 {
12046         struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
12047         void *hdr = ((void **)skb->cb)[1];
12048         struct nlattr *data = ((void **)skb->cb)[2];
12049
12050         /* clear CB data for netlink core to own from now on */
12051         memset(skb->cb, 0, sizeof(skb->cb));
12052
12053         if (WARN_ON(!rdev->cur_cmd_info)) {
12054                 kfree_skb(skb);
12055                 return -EINVAL;
12056         }
12057
12058         nla_nest_end(skb, data);
12059         genlmsg_end(skb, hdr);
12060         return genlmsg_reply(skb, rdev->cur_cmd_info);
12061 }
12062 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_reply);
12063
12064 static int nl80211_set_qos_map(struct sk_buff *skb,
12065                                struct genl_info *info)
12066 {
12067         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12068         struct cfg80211_qos_map *qos_map = NULL;
12069         struct net_device *dev = info->user_ptr[1];
12070         u8 *pos, len, num_des, des_len, des;
12071         int ret;
12072
12073         if (!rdev->ops->set_qos_map)
12074                 return -EOPNOTSUPP;
12075
12076         if (info->attrs[NL80211_ATTR_QOS_MAP]) {
12077                 pos = nla_data(info->attrs[NL80211_ATTR_QOS_MAP]);
12078                 len = nla_len(info->attrs[NL80211_ATTR_QOS_MAP]);
12079
12080                 if (len % 2 || len < IEEE80211_QOS_MAP_LEN_MIN ||
12081                     len > IEEE80211_QOS_MAP_LEN_MAX)
12082                         return -EINVAL;
12083
12084                 qos_map = kzalloc(sizeof(struct cfg80211_qos_map), GFP_KERNEL);
12085                 if (!qos_map)
12086                         return -ENOMEM;
12087
12088                 num_des = (len - IEEE80211_QOS_MAP_LEN_MIN) >> 1;
12089                 if (num_des) {
12090                         des_len = num_des *
12091                                 sizeof(struct cfg80211_dscp_exception);
12092                         memcpy(qos_map->dscp_exception, pos, des_len);
12093                         qos_map->num_des = num_des;
12094                         for (des = 0; des < num_des; des++) {
12095                                 if (qos_map->dscp_exception[des].up > 7) {
12096                                         kfree(qos_map);
12097                                         return -EINVAL;
12098                                 }
12099                         }
12100                         pos += des_len;
12101                 }
12102                 memcpy(qos_map->up, pos, IEEE80211_QOS_MAP_LEN_MIN);
12103         }
12104
12105         wdev_lock(dev->ieee80211_ptr);
12106         ret = nl80211_key_allowed(dev->ieee80211_ptr);
12107         if (!ret)
12108                 ret = rdev_set_qos_map(rdev, dev, qos_map);
12109         wdev_unlock(dev->ieee80211_ptr);
12110
12111         kfree(qos_map);
12112         return ret;
12113 }
12114
12115 static int nl80211_add_tx_ts(struct sk_buff *skb, struct genl_info *info)
12116 {
12117         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12118         struct net_device *dev = info->user_ptr[1];
12119         struct wireless_dev *wdev = dev->ieee80211_ptr;
12120         const u8 *peer;
12121         u8 tsid, up;
12122         u16 admitted_time = 0;
12123         int err;
12124
12125         if (!(rdev->wiphy.features & NL80211_FEATURE_SUPPORTS_WMM_ADMISSION))
12126                 return -EOPNOTSUPP;
12127
12128         if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC] ||
12129             !info->attrs[NL80211_ATTR_USER_PRIO])
12130                 return -EINVAL;
12131
12132         tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
12133         if (tsid >= IEEE80211_NUM_TIDS)
12134                 return -EINVAL;
12135
12136         up = nla_get_u8(info->attrs[NL80211_ATTR_USER_PRIO]);
12137         if (up >= IEEE80211_NUM_UPS)
12138                 return -EINVAL;
12139
12140         /* WMM uses TIDs 0-7 even for TSPEC */
12141         if (tsid >= IEEE80211_FIRST_TSPEC_TSID) {
12142                 /* TODO: handle 802.11 TSPEC/admission control
12143                  * need more attributes for that (e.g. BA session requirement);
12144                  * change the WMM adminssion test above to allow both then
12145                  */
12146                 return -EINVAL;
12147         }
12148
12149         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
12150
12151         if (info->attrs[NL80211_ATTR_ADMITTED_TIME]) {
12152                 admitted_time =
12153                         nla_get_u16(info->attrs[NL80211_ATTR_ADMITTED_TIME]);
12154                 if (!admitted_time)
12155                         return -EINVAL;
12156         }
12157
12158         wdev_lock(wdev);
12159         switch (wdev->iftype) {
12160         case NL80211_IFTYPE_STATION:
12161         case NL80211_IFTYPE_P2P_CLIENT:
12162                 if (wdev->current_bss)
12163                         break;
12164                 err = -ENOTCONN;
12165                 goto out;
12166         default:
12167                 err = -EOPNOTSUPP;
12168                 goto out;
12169         }
12170
12171         err = rdev_add_tx_ts(rdev, dev, tsid, peer, up, admitted_time);
12172
12173  out:
12174         wdev_unlock(wdev);
12175         return err;
12176 }
12177
12178 static int nl80211_del_tx_ts(struct sk_buff *skb, struct genl_info *info)
12179 {
12180         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12181         struct net_device *dev = info->user_ptr[1];
12182         struct wireless_dev *wdev = dev->ieee80211_ptr;
12183         const u8 *peer;
12184         u8 tsid;
12185         int err;
12186
12187         if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC])
12188                 return -EINVAL;
12189
12190         tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
12191         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
12192
12193         wdev_lock(wdev);
12194         err = rdev_del_tx_ts(rdev, dev, tsid, peer);
12195         wdev_unlock(wdev);
12196
12197         return err;
12198 }
12199
12200 static int nl80211_tdls_channel_switch(struct sk_buff *skb,
12201                                        struct genl_info *info)
12202 {
12203         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12204         struct net_device *dev = info->user_ptr[1];
12205         struct wireless_dev *wdev = dev->ieee80211_ptr;
12206         struct cfg80211_chan_def chandef = {};
12207         const u8 *addr;
12208         u8 oper_class;
12209         int err;
12210
12211         if (!rdev->ops->tdls_channel_switch ||
12212             !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
12213                 return -EOPNOTSUPP;
12214
12215         switch (dev->ieee80211_ptr->iftype) {
12216         case NL80211_IFTYPE_STATION:
12217         case NL80211_IFTYPE_P2P_CLIENT:
12218                 break;
12219         default:
12220                 return -EOPNOTSUPP;
12221         }
12222
12223         if (!info->attrs[NL80211_ATTR_MAC] ||
12224             !info->attrs[NL80211_ATTR_OPER_CLASS])
12225                 return -EINVAL;
12226
12227         err = nl80211_parse_chandef(rdev, info, &chandef);
12228         if (err)
12229                 return err;
12230
12231         /*
12232          * Don't allow wide channels on the 2.4Ghz band, as per IEEE802.11-2012
12233          * section 10.22.6.2.1. Disallow 5/10Mhz channels as well for now, the
12234          * specification is not defined for them.
12235          */
12236         if (chandef.chan->band == NL80211_BAND_2GHZ &&
12237             chandef.width != NL80211_CHAN_WIDTH_20_NOHT &&
12238             chandef.width != NL80211_CHAN_WIDTH_20)
12239                 return -EINVAL;
12240
12241         /* we will be active on the TDLS link */
12242         if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
12243                                            wdev->iftype))
12244                 return -EINVAL;
12245
12246         /* don't allow switching to DFS channels */
12247         if (cfg80211_chandef_dfs_required(wdev->wiphy, &chandef, wdev->iftype))
12248                 return -EINVAL;
12249
12250         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
12251         oper_class = nla_get_u8(info->attrs[NL80211_ATTR_OPER_CLASS]);
12252
12253         wdev_lock(wdev);
12254         err = rdev_tdls_channel_switch(rdev, dev, addr, oper_class, &chandef);
12255         wdev_unlock(wdev);
12256
12257         return err;
12258 }
12259
12260 static int nl80211_tdls_cancel_channel_switch(struct sk_buff *skb,
12261                                               struct genl_info *info)
12262 {
12263         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12264         struct net_device *dev = info->user_ptr[1];
12265         struct wireless_dev *wdev = dev->ieee80211_ptr;
12266         const u8 *addr;
12267
12268         if (!rdev->ops->tdls_channel_switch ||
12269             !rdev->ops->tdls_cancel_channel_switch ||
12270             !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
12271                 return -EOPNOTSUPP;
12272
12273         switch (dev->ieee80211_ptr->iftype) {
12274         case NL80211_IFTYPE_STATION:
12275         case NL80211_IFTYPE_P2P_CLIENT:
12276                 break;
12277         default:
12278                 return -EOPNOTSUPP;
12279         }
12280
12281         if (!info->attrs[NL80211_ATTR_MAC])
12282                 return -EINVAL;
12283
12284         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
12285
12286         wdev_lock(wdev);
12287         rdev_tdls_cancel_channel_switch(rdev, dev, addr);
12288         wdev_unlock(wdev);
12289
12290         return 0;
12291 }
12292
12293 static int nl80211_set_multicast_to_unicast(struct sk_buff *skb,
12294                                             struct genl_info *info)
12295 {
12296         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12297         struct net_device *dev = info->user_ptr[1];
12298         struct wireless_dev *wdev = dev->ieee80211_ptr;
12299         const struct nlattr *nla;
12300         bool enabled;
12301
12302         if (!rdev->ops->set_multicast_to_unicast)
12303                 return -EOPNOTSUPP;
12304
12305         if (wdev->iftype != NL80211_IFTYPE_AP &&
12306             wdev->iftype != NL80211_IFTYPE_P2P_GO)
12307                 return -EOPNOTSUPP;
12308
12309         nla = info->attrs[NL80211_ATTR_MULTICAST_TO_UNICAST_ENABLED];
12310         enabled = nla_get_flag(nla);
12311
12312         return rdev_set_multicast_to_unicast(rdev, dev, enabled);
12313 }
12314
12315 static int nl80211_set_pmk(struct sk_buff *skb, struct genl_info *info)
12316 {
12317         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12318         struct net_device *dev = info->user_ptr[1];
12319         struct wireless_dev *wdev = dev->ieee80211_ptr;
12320         struct cfg80211_pmk_conf pmk_conf = {};
12321         int ret;
12322
12323         if (wdev->iftype != NL80211_IFTYPE_STATION &&
12324             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
12325                 return -EOPNOTSUPP;
12326
12327         if (!wiphy_ext_feature_isset(&rdev->wiphy,
12328                                      NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
12329                 return -EOPNOTSUPP;
12330
12331         if (!info->attrs[NL80211_ATTR_MAC] || !info->attrs[NL80211_ATTR_PMK])
12332                 return -EINVAL;
12333
12334         wdev_lock(wdev);
12335         if (!wdev->current_bss) {
12336                 ret = -ENOTCONN;
12337                 goto out;
12338         }
12339
12340         pmk_conf.aa = nla_data(info->attrs[NL80211_ATTR_MAC]);
12341         if (memcmp(pmk_conf.aa, wdev->current_bss->pub.bssid, ETH_ALEN)) {
12342                 ret = -EINVAL;
12343                 goto out;
12344         }
12345
12346         pmk_conf.pmk = nla_data(info->attrs[NL80211_ATTR_PMK]);
12347         pmk_conf.pmk_len = nla_len(info->attrs[NL80211_ATTR_PMK]);
12348         if (pmk_conf.pmk_len != WLAN_PMK_LEN &&
12349             pmk_conf.pmk_len != WLAN_PMK_LEN_SUITE_B_192) {
12350                 ret = -EINVAL;
12351                 goto out;
12352         }
12353
12354         if (info->attrs[NL80211_ATTR_PMKR0_NAME]) {
12355                 int r0_name_len = nla_len(info->attrs[NL80211_ATTR_PMKR0_NAME]);
12356
12357                 if (r0_name_len != WLAN_PMK_NAME_LEN) {
12358                         ret = -EINVAL;
12359                         goto out;
12360                 }
12361
12362                 pmk_conf.pmk_r0_name =
12363                         nla_data(info->attrs[NL80211_ATTR_PMKR0_NAME]);
12364         }
12365
12366         ret = rdev_set_pmk(rdev, dev, &pmk_conf);
12367 out:
12368         wdev_unlock(wdev);
12369         return ret;
12370 }
12371
12372 static int nl80211_del_pmk(struct sk_buff *skb, struct genl_info *info)
12373 {
12374         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12375         struct net_device *dev = info->user_ptr[1];
12376         struct wireless_dev *wdev = dev->ieee80211_ptr;
12377         const u8 *aa;
12378         int ret;
12379
12380         if (wdev->iftype != NL80211_IFTYPE_STATION &&
12381             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
12382                 return -EOPNOTSUPP;
12383
12384         if (!wiphy_ext_feature_isset(&rdev->wiphy,
12385                                      NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
12386                 return -EOPNOTSUPP;
12387
12388         if (!info->attrs[NL80211_ATTR_MAC])
12389                 return -EINVAL;
12390
12391         wdev_lock(wdev);
12392         aa = nla_data(info->attrs[NL80211_ATTR_MAC]);
12393         ret = rdev_del_pmk(rdev, dev, aa);
12394         wdev_unlock(wdev);
12395
12396         return ret;
12397 }
12398
12399 #define NL80211_FLAG_NEED_WIPHY         0x01
12400 #define NL80211_FLAG_NEED_NETDEV        0x02
12401 #define NL80211_FLAG_NEED_RTNL          0x04
12402 #define NL80211_FLAG_CHECK_NETDEV_UP    0x08
12403 #define NL80211_FLAG_NEED_NETDEV_UP     (NL80211_FLAG_NEED_NETDEV |\
12404                                          NL80211_FLAG_CHECK_NETDEV_UP)
12405 #define NL80211_FLAG_NEED_WDEV          0x10
12406 /* If a netdev is associated, it must be UP, P2P must be started */
12407 #define NL80211_FLAG_NEED_WDEV_UP       (NL80211_FLAG_NEED_WDEV |\
12408                                          NL80211_FLAG_CHECK_NETDEV_UP)
12409 #define NL80211_FLAG_CLEAR_SKB          0x20
12410
12411 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
12412                             struct genl_info *info)
12413 {
12414         struct cfg80211_registered_device *rdev;
12415         struct wireless_dev *wdev;
12416         struct net_device *dev;
12417         bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
12418
12419         if (rtnl)
12420                 rtnl_lock();
12421
12422         if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
12423                 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
12424                 if (IS_ERR(rdev)) {
12425                         if (rtnl)
12426                                 rtnl_unlock();
12427                         return PTR_ERR(rdev);
12428                 }
12429                 info->user_ptr[0] = rdev;
12430         } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV ||
12431                    ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
12432                 ASSERT_RTNL();
12433
12434                 wdev = __cfg80211_wdev_from_attrs(genl_info_net(info),
12435                                                   info->attrs);
12436                 if (IS_ERR(wdev)) {
12437                         if (rtnl)
12438                                 rtnl_unlock();
12439                         return PTR_ERR(wdev);
12440                 }
12441
12442                 dev = wdev->netdev;
12443                 rdev = wiphy_to_rdev(wdev->wiphy);
12444
12445                 if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
12446                         if (!dev) {
12447                                 if (rtnl)
12448                                         rtnl_unlock();
12449                                 return -EINVAL;
12450                         }
12451
12452                         info->user_ptr[1] = dev;
12453                 } else {
12454                         info->user_ptr[1] = wdev;
12455                 }
12456
12457                 if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
12458                     !wdev_running(wdev)) {
12459                         if (rtnl)
12460                                 rtnl_unlock();
12461                         return -ENETDOWN;
12462                 }
12463
12464                 if (dev)
12465                         dev_hold(dev);
12466
12467                 info->user_ptr[0] = rdev;
12468         }
12469
12470         return 0;
12471 }
12472
12473 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
12474                               struct genl_info *info)
12475 {
12476         if (info->user_ptr[1]) {
12477                 if (ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
12478                         struct wireless_dev *wdev = info->user_ptr[1];
12479
12480                         if (wdev->netdev)
12481                                 dev_put(wdev->netdev);
12482                 } else {
12483                         dev_put(info->user_ptr[1]);
12484                 }
12485         }
12486
12487         if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
12488                 rtnl_unlock();
12489
12490         /* If needed, clear the netlink message payload from the SKB
12491          * as it might contain key data that shouldn't stick around on
12492          * the heap after the SKB is freed. The netlink message header
12493          * is still needed for further processing, so leave it intact.
12494          */
12495         if (ops->internal_flags & NL80211_FLAG_CLEAR_SKB) {
12496                 struct nlmsghdr *nlh = nlmsg_hdr(skb);
12497
12498                 memset(nlmsg_data(nlh), 0, nlmsg_len(nlh));
12499         }
12500 }
12501
12502 static const struct genl_ops nl80211_ops[] = {
12503         {
12504                 .cmd = NL80211_CMD_GET_WIPHY,
12505                 .doit = nl80211_get_wiphy,
12506                 .dumpit = nl80211_dump_wiphy,
12507                 .done = nl80211_dump_wiphy_done,
12508                 .policy = nl80211_policy,
12509                 /* can be retrieved by unprivileged users */
12510                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
12511                                   NL80211_FLAG_NEED_RTNL,
12512         },
12513         {
12514                 .cmd = NL80211_CMD_SET_WIPHY,
12515                 .doit = nl80211_set_wiphy,
12516                 .policy = nl80211_policy,
12517                 .flags = GENL_UNS_ADMIN_PERM,
12518                 .internal_flags = NL80211_FLAG_NEED_RTNL,
12519         },
12520         {
12521                 .cmd = NL80211_CMD_GET_INTERFACE,
12522                 .doit = nl80211_get_interface,
12523                 .dumpit = nl80211_dump_interface,
12524                 .policy = nl80211_policy,
12525                 /* can be retrieved by unprivileged users */
12526                 .internal_flags = NL80211_FLAG_NEED_WDEV |
12527                                   NL80211_FLAG_NEED_RTNL,
12528         },
12529         {
12530                 .cmd = NL80211_CMD_SET_INTERFACE,
12531                 .doit = nl80211_set_interface,
12532                 .policy = nl80211_policy,
12533                 .flags = GENL_UNS_ADMIN_PERM,
12534                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12535                                   NL80211_FLAG_NEED_RTNL,
12536         },
12537         {
12538                 .cmd = NL80211_CMD_NEW_INTERFACE,
12539                 .doit = nl80211_new_interface,
12540                 .policy = nl80211_policy,
12541                 .flags = GENL_UNS_ADMIN_PERM,
12542                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
12543                                   NL80211_FLAG_NEED_RTNL,
12544         },
12545         {
12546                 .cmd = NL80211_CMD_DEL_INTERFACE,
12547                 .doit = nl80211_del_interface,
12548                 .policy = nl80211_policy,
12549                 .flags = GENL_UNS_ADMIN_PERM,
12550                 .internal_flags = NL80211_FLAG_NEED_WDEV |
12551                                   NL80211_FLAG_NEED_RTNL,
12552         },
12553         {
12554                 .cmd = NL80211_CMD_GET_KEY,
12555                 .doit = nl80211_get_key,
12556                 .policy = nl80211_policy,
12557                 .flags = GENL_UNS_ADMIN_PERM,
12558                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12559                                   NL80211_FLAG_NEED_RTNL,
12560         },
12561         {
12562                 .cmd = NL80211_CMD_SET_KEY,
12563                 .doit = nl80211_set_key,
12564                 .policy = nl80211_policy,
12565                 .flags = GENL_UNS_ADMIN_PERM,
12566                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12567                                   NL80211_FLAG_NEED_RTNL |
12568                                   NL80211_FLAG_CLEAR_SKB,
12569         },
12570         {
12571                 .cmd = NL80211_CMD_NEW_KEY,
12572                 .doit = nl80211_new_key,
12573                 .policy = nl80211_policy,
12574                 .flags = GENL_UNS_ADMIN_PERM,
12575                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12576                                   NL80211_FLAG_NEED_RTNL |
12577                                   NL80211_FLAG_CLEAR_SKB,
12578         },
12579         {
12580                 .cmd = NL80211_CMD_DEL_KEY,
12581                 .doit = nl80211_del_key,
12582                 .policy = nl80211_policy,
12583                 .flags = GENL_UNS_ADMIN_PERM,
12584                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12585                                   NL80211_FLAG_NEED_RTNL,
12586         },
12587         {
12588                 .cmd = NL80211_CMD_SET_BEACON,
12589                 .policy = nl80211_policy,
12590                 .flags = GENL_UNS_ADMIN_PERM,
12591                 .doit = nl80211_set_beacon,
12592                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12593                                   NL80211_FLAG_NEED_RTNL,
12594         },
12595         {
12596                 .cmd = NL80211_CMD_START_AP,
12597                 .policy = nl80211_policy,
12598                 .flags = GENL_UNS_ADMIN_PERM,
12599                 .doit = nl80211_start_ap,
12600                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12601                                   NL80211_FLAG_NEED_RTNL,
12602         },
12603         {
12604                 .cmd = NL80211_CMD_STOP_AP,
12605                 .policy = nl80211_policy,
12606                 .flags = GENL_UNS_ADMIN_PERM,
12607                 .doit = nl80211_stop_ap,
12608                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12609                                   NL80211_FLAG_NEED_RTNL,
12610         },
12611         {
12612                 .cmd = NL80211_CMD_GET_STATION,
12613                 .doit = nl80211_get_station,
12614                 .dumpit = nl80211_dump_station,
12615                 .policy = nl80211_policy,
12616                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12617                                   NL80211_FLAG_NEED_RTNL,
12618         },
12619         {
12620                 .cmd = NL80211_CMD_SET_STATION,
12621                 .doit = nl80211_set_station,
12622                 .policy = nl80211_policy,
12623                 .flags = GENL_UNS_ADMIN_PERM,
12624                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12625                                   NL80211_FLAG_NEED_RTNL,
12626         },
12627         {
12628                 .cmd = NL80211_CMD_NEW_STATION,
12629                 .doit = nl80211_new_station,
12630                 .policy = nl80211_policy,
12631                 .flags = GENL_UNS_ADMIN_PERM,
12632                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12633                                   NL80211_FLAG_NEED_RTNL,
12634         },
12635         {
12636                 .cmd = NL80211_CMD_DEL_STATION,
12637                 .doit = nl80211_del_station,
12638                 .policy = nl80211_policy,
12639                 .flags = GENL_UNS_ADMIN_PERM,
12640                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12641                                   NL80211_FLAG_NEED_RTNL,
12642         },
12643         {
12644                 .cmd = NL80211_CMD_GET_MPATH,
12645                 .doit = nl80211_get_mpath,
12646                 .dumpit = nl80211_dump_mpath,
12647                 .policy = nl80211_policy,
12648                 .flags = GENL_UNS_ADMIN_PERM,
12649                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12650                                   NL80211_FLAG_NEED_RTNL,
12651         },
12652         {
12653                 .cmd = NL80211_CMD_GET_MPP,
12654                 .doit = nl80211_get_mpp,
12655                 .dumpit = nl80211_dump_mpp,
12656                 .policy = nl80211_policy,
12657                 .flags = GENL_UNS_ADMIN_PERM,
12658                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12659                                   NL80211_FLAG_NEED_RTNL,
12660         },
12661         {
12662                 .cmd = NL80211_CMD_SET_MPATH,
12663                 .doit = nl80211_set_mpath,
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_NEW_MPATH,
12671                 .doit = nl80211_new_mpath,
12672                 .policy = nl80211_policy,
12673                 .flags = GENL_UNS_ADMIN_PERM,
12674                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12675                                   NL80211_FLAG_NEED_RTNL,
12676         },
12677         {
12678                 .cmd = NL80211_CMD_DEL_MPATH,
12679                 .doit = nl80211_del_mpath,
12680                 .policy = nl80211_policy,
12681                 .flags = GENL_UNS_ADMIN_PERM,
12682                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12683                                   NL80211_FLAG_NEED_RTNL,
12684         },
12685         {
12686                 .cmd = NL80211_CMD_SET_BSS,
12687                 .doit = nl80211_set_bss,
12688                 .policy = nl80211_policy,
12689                 .flags = GENL_UNS_ADMIN_PERM,
12690                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12691                                   NL80211_FLAG_NEED_RTNL,
12692         },
12693         {
12694                 .cmd = NL80211_CMD_GET_REG,
12695                 .doit = nl80211_get_reg_do,
12696                 .dumpit = nl80211_get_reg_dump,
12697                 .policy = nl80211_policy,
12698                 .internal_flags = NL80211_FLAG_NEED_RTNL,
12699                 /* can be retrieved by unprivileged users */
12700         },
12701 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
12702         {
12703                 .cmd = NL80211_CMD_SET_REG,
12704                 .doit = nl80211_set_reg,
12705                 .policy = nl80211_policy,
12706                 .flags = GENL_ADMIN_PERM,
12707                 .internal_flags = NL80211_FLAG_NEED_RTNL,
12708         },
12709 #endif
12710         {
12711                 .cmd = NL80211_CMD_REQ_SET_REG,
12712                 .doit = nl80211_req_set_reg,
12713                 .policy = nl80211_policy,
12714                 .flags = GENL_ADMIN_PERM,
12715         },
12716         {
12717                 .cmd = NL80211_CMD_RELOAD_REGDB,
12718                 .doit = nl80211_reload_regdb,
12719                 .policy = nl80211_policy,
12720                 .flags = GENL_ADMIN_PERM,
12721         },
12722         {
12723                 .cmd = NL80211_CMD_GET_MESH_CONFIG,
12724                 .doit = nl80211_get_mesh_config,
12725                 .policy = nl80211_policy,
12726                 /* can be retrieved by unprivileged users */
12727                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12728                                   NL80211_FLAG_NEED_RTNL,
12729         },
12730         {
12731                 .cmd = NL80211_CMD_SET_MESH_CONFIG,
12732                 .doit = nl80211_update_mesh_config,
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_TRIGGER_SCAN,
12740                 .doit = nl80211_trigger_scan,
12741                 .policy = nl80211_policy,
12742                 .flags = GENL_UNS_ADMIN_PERM,
12743                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12744                                   NL80211_FLAG_NEED_RTNL,
12745         },
12746         {
12747                 .cmd = NL80211_CMD_ABORT_SCAN,
12748                 .doit = nl80211_abort_scan,
12749                 .policy = nl80211_policy,
12750                 .flags = GENL_UNS_ADMIN_PERM,
12751                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12752                                   NL80211_FLAG_NEED_RTNL,
12753         },
12754         {
12755                 .cmd = NL80211_CMD_GET_SCAN,
12756                 .policy = nl80211_policy,
12757                 .dumpit = nl80211_dump_scan,
12758         },
12759         {
12760                 .cmd = NL80211_CMD_START_SCHED_SCAN,
12761                 .doit = nl80211_start_sched_scan,
12762                 .policy = nl80211_policy,
12763                 .flags = GENL_UNS_ADMIN_PERM,
12764                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12765                                   NL80211_FLAG_NEED_RTNL,
12766         },
12767         {
12768                 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
12769                 .doit = nl80211_stop_sched_scan,
12770                 .policy = nl80211_policy,
12771                 .flags = GENL_UNS_ADMIN_PERM,
12772                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12773                                   NL80211_FLAG_NEED_RTNL,
12774         },
12775         {
12776                 .cmd = NL80211_CMD_AUTHENTICATE,
12777                 .doit = nl80211_authenticate,
12778                 .policy = nl80211_policy,
12779                 .flags = GENL_UNS_ADMIN_PERM,
12780                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12781                                   NL80211_FLAG_NEED_RTNL |
12782                                   NL80211_FLAG_CLEAR_SKB,
12783         },
12784         {
12785                 .cmd = NL80211_CMD_ASSOCIATE,
12786                 .doit = nl80211_associate,
12787                 .policy = nl80211_policy,
12788                 .flags = GENL_UNS_ADMIN_PERM,
12789                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12790                                   NL80211_FLAG_NEED_RTNL,
12791         },
12792         {
12793                 .cmd = NL80211_CMD_DEAUTHENTICATE,
12794                 .doit = nl80211_deauthenticate,
12795                 .policy = nl80211_policy,
12796                 .flags = GENL_UNS_ADMIN_PERM,
12797                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12798                                   NL80211_FLAG_NEED_RTNL,
12799         },
12800         {
12801                 .cmd = NL80211_CMD_DISASSOCIATE,
12802                 .doit = nl80211_disassociate,
12803                 .policy = nl80211_policy,
12804                 .flags = GENL_UNS_ADMIN_PERM,
12805                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12806                                   NL80211_FLAG_NEED_RTNL,
12807         },
12808         {
12809                 .cmd = NL80211_CMD_JOIN_IBSS,
12810                 .doit = nl80211_join_ibss,
12811                 .policy = nl80211_policy,
12812                 .flags = GENL_UNS_ADMIN_PERM,
12813                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12814                                   NL80211_FLAG_NEED_RTNL,
12815         },
12816         {
12817                 .cmd = NL80211_CMD_LEAVE_IBSS,
12818                 .doit = nl80211_leave_ibss,
12819                 .policy = nl80211_policy,
12820                 .flags = GENL_UNS_ADMIN_PERM,
12821                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12822                                   NL80211_FLAG_NEED_RTNL,
12823         },
12824 #ifdef CONFIG_NL80211_TESTMODE
12825         {
12826                 .cmd = NL80211_CMD_TESTMODE,
12827                 .doit = nl80211_testmode_do,
12828                 .dumpit = nl80211_testmode_dump,
12829                 .policy = nl80211_policy,
12830                 .flags = GENL_UNS_ADMIN_PERM,
12831                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
12832                                   NL80211_FLAG_NEED_RTNL,
12833         },
12834 #endif
12835         {
12836                 .cmd = NL80211_CMD_CONNECT,
12837                 .doit = nl80211_connect,
12838                 .policy = nl80211_policy,
12839                 .flags = GENL_UNS_ADMIN_PERM,
12840                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12841                                   NL80211_FLAG_NEED_RTNL,
12842         },
12843         {
12844                 .cmd = NL80211_CMD_UPDATE_CONNECT_PARAMS,
12845                 .doit = nl80211_update_connect_params,
12846                 .policy = nl80211_policy,
12847                 .flags = GENL_ADMIN_PERM,
12848                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12849                                   NL80211_FLAG_NEED_RTNL,
12850         },
12851         {
12852                 .cmd = NL80211_CMD_DISCONNECT,
12853                 .doit = nl80211_disconnect,
12854                 .policy = nl80211_policy,
12855                 .flags = GENL_UNS_ADMIN_PERM,
12856                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12857                                   NL80211_FLAG_NEED_RTNL,
12858         },
12859         {
12860                 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
12861                 .doit = nl80211_wiphy_netns,
12862                 .policy = nl80211_policy,
12863                 .flags = GENL_UNS_ADMIN_PERM,
12864                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
12865                                   NL80211_FLAG_NEED_RTNL,
12866         },
12867         {
12868                 .cmd = NL80211_CMD_GET_SURVEY,
12869                 .policy = nl80211_policy,
12870                 .dumpit = nl80211_dump_survey,
12871         },
12872         {
12873                 .cmd = NL80211_CMD_SET_PMKSA,
12874                 .doit = nl80211_setdel_pmksa,
12875                 .policy = nl80211_policy,
12876                 .flags = GENL_UNS_ADMIN_PERM,
12877                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12878                                   NL80211_FLAG_NEED_RTNL,
12879         },
12880         {
12881                 .cmd = NL80211_CMD_DEL_PMKSA,
12882                 .doit = nl80211_setdel_pmksa,
12883                 .policy = nl80211_policy,
12884                 .flags = GENL_UNS_ADMIN_PERM,
12885                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12886                                   NL80211_FLAG_NEED_RTNL,
12887         },
12888         {
12889                 .cmd = NL80211_CMD_FLUSH_PMKSA,
12890                 .doit = nl80211_flush_pmksa,
12891                 .policy = nl80211_policy,
12892                 .flags = GENL_UNS_ADMIN_PERM,
12893                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12894                                   NL80211_FLAG_NEED_RTNL,
12895         },
12896         {
12897                 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
12898                 .doit = nl80211_remain_on_channel,
12899                 .policy = nl80211_policy,
12900                 .flags = GENL_UNS_ADMIN_PERM,
12901                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12902                                   NL80211_FLAG_NEED_RTNL,
12903         },
12904         {
12905                 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
12906                 .doit = nl80211_cancel_remain_on_channel,
12907                 .policy = nl80211_policy,
12908                 .flags = GENL_UNS_ADMIN_PERM,
12909                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12910                                   NL80211_FLAG_NEED_RTNL,
12911         },
12912         {
12913                 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
12914                 .doit = nl80211_set_tx_bitrate_mask,
12915                 .policy = nl80211_policy,
12916                 .flags = GENL_UNS_ADMIN_PERM,
12917                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12918                                   NL80211_FLAG_NEED_RTNL,
12919         },
12920         {
12921                 .cmd = NL80211_CMD_REGISTER_FRAME,
12922                 .doit = nl80211_register_mgmt,
12923                 .policy = nl80211_policy,
12924                 .flags = GENL_UNS_ADMIN_PERM,
12925                 .internal_flags = NL80211_FLAG_NEED_WDEV |
12926                                   NL80211_FLAG_NEED_RTNL,
12927         },
12928         {
12929                 .cmd = NL80211_CMD_FRAME,
12930                 .doit = nl80211_tx_mgmt,
12931                 .policy = nl80211_policy,
12932                 .flags = GENL_UNS_ADMIN_PERM,
12933                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12934                                   NL80211_FLAG_NEED_RTNL,
12935         },
12936         {
12937                 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
12938                 .doit = nl80211_tx_mgmt_cancel_wait,
12939                 .policy = nl80211_policy,
12940                 .flags = GENL_UNS_ADMIN_PERM,
12941                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12942                                   NL80211_FLAG_NEED_RTNL,
12943         },
12944         {
12945                 .cmd = NL80211_CMD_SET_POWER_SAVE,
12946                 .doit = nl80211_set_power_save,
12947                 .policy = nl80211_policy,
12948                 .flags = GENL_UNS_ADMIN_PERM,
12949                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12950                                   NL80211_FLAG_NEED_RTNL,
12951         },
12952         {
12953                 .cmd = NL80211_CMD_GET_POWER_SAVE,
12954                 .doit = nl80211_get_power_save,
12955                 .policy = nl80211_policy,
12956                 /* can be retrieved by unprivileged users */
12957                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12958                                   NL80211_FLAG_NEED_RTNL,
12959         },
12960         {
12961                 .cmd = NL80211_CMD_SET_CQM,
12962                 .doit = nl80211_set_cqm,
12963                 .policy = nl80211_policy,
12964                 .flags = GENL_UNS_ADMIN_PERM,
12965                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12966                                   NL80211_FLAG_NEED_RTNL,
12967         },
12968         {
12969                 .cmd = NL80211_CMD_SET_CHANNEL,
12970                 .doit = nl80211_set_channel,
12971                 .policy = nl80211_policy,
12972                 .flags = GENL_UNS_ADMIN_PERM,
12973                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12974                                   NL80211_FLAG_NEED_RTNL,
12975         },
12976         {
12977                 .cmd = NL80211_CMD_SET_WDS_PEER,
12978                 .doit = nl80211_set_wds_peer,
12979                 .policy = nl80211_policy,
12980                 .flags = GENL_UNS_ADMIN_PERM,
12981                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12982                                   NL80211_FLAG_NEED_RTNL,
12983         },
12984         {
12985                 .cmd = NL80211_CMD_JOIN_MESH,
12986                 .doit = nl80211_join_mesh,
12987                 .policy = nl80211_policy,
12988                 .flags = GENL_UNS_ADMIN_PERM,
12989                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12990                                   NL80211_FLAG_NEED_RTNL,
12991         },
12992         {
12993                 .cmd = NL80211_CMD_LEAVE_MESH,
12994                 .doit = nl80211_leave_mesh,
12995                 .policy = nl80211_policy,
12996                 .flags = GENL_UNS_ADMIN_PERM,
12997                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12998                                   NL80211_FLAG_NEED_RTNL,
12999         },
13000         {
13001                 .cmd = NL80211_CMD_JOIN_OCB,
13002                 .doit = nl80211_join_ocb,
13003                 .policy = nl80211_policy,
13004                 .flags = GENL_UNS_ADMIN_PERM,
13005                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13006                                   NL80211_FLAG_NEED_RTNL,
13007         },
13008         {
13009                 .cmd = NL80211_CMD_LEAVE_OCB,
13010                 .doit = nl80211_leave_ocb,
13011                 .policy = nl80211_policy,
13012                 .flags = GENL_UNS_ADMIN_PERM,
13013                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13014                                   NL80211_FLAG_NEED_RTNL,
13015         },
13016 #ifdef CONFIG_PM
13017         {
13018                 .cmd = NL80211_CMD_GET_WOWLAN,
13019                 .doit = nl80211_get_wowlan,
13020                 .policy = nl80211_policy,
13021                 /* can be retrieved by unprivileged users */
13022                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13023                                   NL80211_FLAG_NEED_RTNL,
13024         },
13025         {
13026                 .cmd = NL80211_CMD_SET_WOWLAN,
13027                 .doit = nl80211_set_wowlan,
13028                 .policy = nl80211_policy,
13029                 .flags = GENL_UNS_ADMIN_PERM,
13030                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13031                                   NL80211_FLAG_NEED_RTNL,
13032         },
13033 #endif
13034         {
13035                 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
13036                 .doit = nl80211_set_rekey_data,
13037                 .policy = nl80211_policy,
13038                 .flags = GENL_UNS_ADMIN_PERM,
13039                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13040                                   NL80211_FLAG_NEED_RTNL |
13041                                   NL80211_FLAG_CLEAR_SKB,
13042         },
13043         {
13044                 .cmd = NL80211_CMD_TDLS_MGMT,
13045                 .doit = nl80211_tdls_mgmt,
13046                 .policy = nl80211_policy,
13047                 .flags = GENL_UNS_ADMIN_PERM,
13048                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13049                                   NL80211_FLAG_NEED_RTNL,
13050         },
13051         {
13052                 .cmd = NL80211_CMD_TDLS_OPER,
13053                 .doit = nl80211_tdls_oper,
13054                 .policy = nl80211_policy,
13055                 .flags = GENL_UNS_ADMIN_PERM,
13056                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13057                                   NL80211_FLAG_NEED_RTNL,
13058         },
13059         {
13060                 .cmd = NL80211_CMD_UNEXPECTED_FRAME,
13061                 .doit = nl80211_register_unexpected_frame,
13062                 .policy = nl80211_policy,
13063                 .flags = GENL_UNS_ADMIN_PERM,
13064                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13065                                   NL80211_FLAG_NEED_RTNL,
13066         },
13067         {
13068                 .cmd = NL80211_CMD_PROBE_CLIENT,
13069                 .doit = nl80211_probe_client,
13070                 .policy = nl80211_policy,
13071                 .flags = GENL_UNS_ADMIN_PERM,
13072                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13073                                   NL80211_FLAG_NEED_RTNL,
13074         },
13075         {
13076                 .cmd = NL80211_CMD_REGISTER_BEACONS,
13077                 .doit = nl80211_register_beacons,
13078                 .policy = nl80211_policy,
13079                 .flags = GENL_UNS_ADMIN_PERM,
13080                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13081                                   NL80211_FLAG_NEED_RTNL,
13082         },
13083         {
13084                 .cmd = NL80211_CMD_SET_NOACK_MAP,
13085                 .doit = nl80211_set_noack_map,
13086                 .policy = nl80211_policy,
13087                 .flags = GENL_UNS_ADMIN_PERM,
13088                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13089                                   NL80211_FLAG_NEED_RTNL,
13090         },
13091         {
13092                 .cmd = NL80211_CMD_START_P2P_DEVICE,
13093                 .doit = nl80211_start_p2p_device,
13094                 .policy = nl80211_policy,
13095                 .flags = GENL_UNS_ADMIN_PERM,
13096                 .internal_flags = NL80211_FLAG_NEED_WDEV |
13097                                   NL80211_FLAG_NEED_RTNL,
13098         },
13099         {
13100                 .cmd = NL80211_CMD_STOP_P2P_DEVICE,
13101                 .doit = nl80211_stop_p2p_device,
13102                 .policy = nl80211_policy,
13103                 .flags = GENL_UNS_ADMIN_PERM,
13104                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13105                                   NL80211_FLAG_NEED_RTNL,
13106         },
13107         {
13108                 .cmd = NL80211_CMD_START_NAN,
13109                 .doit = nl80211_start_nan,
13110                 .policy = nl80211_policy,
13111                 .flags = GENL_ADMIN_PERM,
13112                 .internal_flags = NL80211_FLAG_NEED_WDEV |
13113                                   NL80211_FLAG_NEED_RTNL,
13114         },
13115         {
13116                 .cmd = NL80211_CMD_STOP_NAN,
13117                 .doit = nl80211_stop_nan,
13118                 .policy = nl80211_policy,
13119                 .flags = GENL_ADMIN_PERM,
13120                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13121                                   NL80211_FLAG_NEED_RTNL,
13122         },
13123         {
13124                 .cmd = NL80211_CMD_ADD_NAN_FUNCTION,
13125                 .doit = nl80211_nan_add_func,
13126                 .policy = nl80211_policy,
13127                 .flags = GENL_ADMIN_PERM,
13128                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13129                                   NL80211_FLAG_NEED_RTNL,
13130         },
13131         {
13132                 .cmd = NL80211_CMD_DEL_NAN_FUNCTION,
13133                 .doit = nl80211_nan_del_func,
13134                 .policy = nl80211_policy,
13135                 .flags = GENL_ADMIN_PERM,
13136                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13137                                   NL80211_FLAG_NEED_RTNL,
13138         },
13139         {
13140                 .cmd = NL80211_CMD_CHANGE_NAN_CONFIG,
13141                 .doit = nl80211_nan_change_config,
13142                 .policy = nl80211_policy,
13143                 .flags = GENL_ADMIN_PERM,
13144                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13145                                   NL80211_FLAG_NEED_RTNL,
13146         },
13147         {
13148                 .cmd = NL80211_CMD_SET_MCAST_RATE,
13149                 .doit = nl80211_set_mcast_rate,
13150                 .policy = nl80211_policy,
13151                 .flags = GENL_UNS_ADMIN_PERM,
13152                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13153                                   NL80211_FLAG_NEED_RTNL,
13154         },
13155         {
13156                 .cmd = NL80211_CMD_SET_MAC_ACL,
13157                 .doit = nl80211_set_mac_acl,
13158                 .policy = nl80211_policy,
13159                 .flags = GENL_UNS_ADMIN_PERM,
13160                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13161                                   NL80211_FLAG_NEED_RTNL,
13162         },
13163         {
13164                 .cmd = NL80211_CMD_RADAR_DETECT,
13165                 .doit = nl80211_start_radar_detection,
13166                 .policy = nl80211_policy,
13167                 .flags = GENL_UNS_ADMIN_PERM,
13168                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13169                                   NL80211_FLAG_NEED_RTNL,
13170         },
13171         {
13172                 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES,
13173                 .doit = nl80211_get_protocol_features,
13174                 .policy = nl80211_policy,
13175         },
13176         {
13177                 .cmd = NL80211_CMD_UPDATE_FT_IES,
13178                 .doit = nl80211_update_ft_ies,
13179                 .policy = nl80211_policy,
13180                 .flags = GENL_UNS_ADMIN_PERM,
13181                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13182                                   NL80211_FLAG_NEED_RTNL,
13183         },
13184         {
13185                 .cmd = NL80211_CMD_CRIT_PROTOCOL_START,
13186                 .doit = nl80211_crit_protocol_start,
13187                 .policy = nl80211_policy,
13188                 .flags = GENL_UNS_ADMIN_PERM,
13189                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13190                                   NL80211_FLAG_NEED_RTNL,
13191         },
13192         {
13193                 .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP,
13194                 .doit = nl80211_crit_protocol_stop,
13195                 .policy = nl80211_policy,
13196                 .flags = GENL_UNS_ADMIN_PERM,
13197                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13198                                   NL80211_FLAG_NEED_RTNL,
13199         },
13200         {
13201                 .cmd = NL80211_CMD_GET_COALESCE,
13202                 .doit = nl80211_get_coalesce,
13203                 .policy = nl80211_policy,
13204                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13205                                   NL80211_FLAG_NEED_RTNL,
13206         },
13207         {
13208                 .cmd = NL80211_CMD_SET_COALESCE,
13209                 .doit = nl80211_set_coalesce,
13210                 .policy = nl80211_policy,
13211                 .flags = GENL_UNS_ADMIN_PERM,
13212                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13213                                   NL80211_FLAG_NEED_RTNL,
13214         },
13215         {
13216                 .cmd = NL80211_CMD_CHANNEL_SWITCH,
13217                 .doit = nl80211_channel_switch,
13218                 .policy = nl80211_policy,
13219                 .flags = GENL_UNS_ADMIN_PERM,
13220                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13221                                   NL80211_FLAG_NEED_RTNL,
13222         },
13223         {
13224                 .cmd = NL80211_CMD_VENDOR,
13225                 .doit = nl80211_vendor_cmd,
13226                 .dumpit = nl80211_vendor_cmd_dump,
13227                 .policy = nl80211_policy,
13228                 .flags = GENL_UNS_ADMIN_PERM,
13229                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13230                                   NL80211_FLAG_NEED_RTNL,
13231         },
13232         {
13233                 .cmd = NL80211_CMD_SET_QOS_MAP,
13234                 .doit = nl80211_set_qos_map,
13235                 .policy = nl80211_policy,
13236                 .flags = GENL_UNS_ADMIN_PERM,
13237                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13238                                   NL80211_FLAG_NEED_RTNL,
13239         },
13240         {
13241                 .cmd = NL80211_CMD_ADD_TX_TS,
13242                 .doit = nl80211_add_tx_ts,
13243                 .policy = nl80211_policy,
13244                 .flags = GENL_UNS_ADMIN_PERM,
13245                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13246                                   NL80211_FLAG_NEED_RTNL,
13247         },
13248         {
13249                 .cmd = NL80211_CMD_DEL_TX_TS,
13250                 .doit = nl80211_del_tx_ts,
13251                 .policy = nl80211_policy,
13252                 .flags = GENL_UNS_ADMIN_PERM,
13253                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13254                                   NL80211_FLAG_NEED_RTNL,
13255         },
13256         {
13257                 .cmd = NL80211_CMD_TDLS_CHANNEL_SWITCH,
13258                 .doit = nl80211_tdls_channel_switch,
13259                 .policy = nl80211_policy,
13260                 .flags = GENL_UNS_ADMIN_PERM,
13261                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13262                                   NL80211_FLAG_NEED_RTNL,
13263         },
13264         {
13265                 .cmd = NL80211_CMD_TDLS_CANCEL_CHANNEL_SWITCH,
13266                 .doit = nl80211_tdls_cancel_channel_switch,
13267                 .policy = nl80211_policy,
13268                 .flags = GENL_UNS_ADMIN_PERM,
13269                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13270                                   NL80211_FLAG_NEED_RTNL,
13271         },
13272         {
13273                 .cmd = NL80211_CMD_SET_MULTICAST_TO_UNICAST,
13274                 .doit = nl80211_set_multicast_to_unicast,
13275                 .policy = nl80211_policy,
13276                 .flags = GENL_UNS_ADMIN_PERM,
13277                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13278                                   NL80211_FLAG_NEED_RTNL,
13279         },
13280         {
13281                 .cmd = NL80211_CMD_SET_PMK,
13282                 .doit = nl80211_set_pmk,
13283                 .policy = nl80211_policy,
13284                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13285                                   NL80211_FLAG_NEED_RTNL,
13286         },
13287         {
13288                 .cmd = NL80211_CMD_DEL_PMK,
13289                 .doit = nl80211_del_pmk,
13290                 .policy = nl80211_policy,
13291                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13292                                   NL80211_FLAG_NEED_RTNL,
13293         },
13294
13295 };
13296
13297 static struct genl_family nl80211_fam __ro_after_init = {
13298         .name = NL80211_GENL_NAME,      /* have users key off the name instead */
13299         .hdrsize = 0,                   /* no private header */
13300         .version = 1,                   /* no particular meaning now */
13301         .maxattr = NL80211_ATTR_MAX,
13302         .netnsok = true,
13303         .pre_doit = nl80211_pre_doit,
13304         .post_doit = nl80211_post_doit,
13305         .module = THIS_MODULE,
13306         .ops = nl80211_ops,
13307         .n_ops = ARRAY_SIZE(nl80211_ops),
13308         .mcgrps = nl80211_mcgrps,
13309         .n_mcgrps = ARRAY_SIZE(nl80211_mcgrps),
13310 };
13311
13312 /* notification functions */
13313
13314 void nl80211_notify_wiphy(struct cfg80211_registered_device *rdev,
13315                           enum nl80211_commands cmd)
13316 {
13317         struct sk_buff *msg;
13318         struct nl80211_dump_wiphy_state state = {};
13319
13320         WARN_ON(cmd != NL80211_CMD_NEW_WIPHY &&
13321                 cmd != NL80211_CMD_DEL_WIPHY);
13322
13323         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13324         if (!msg)
13325                 return;
13326
13327         if (nl80211_send_wiphy(rdev, cmd, msg, 0, 0, 0, &state) < 0) {
13328                 nlmsg_free(msg);
13329                 return;
13330         }
13331
13332         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13333                                 NL80211_MCGRP_CONFIG, GFP_KERNEL);
13334 }
13335
13336 void nl80211_notify_iface(struct cfg80211_registered_device *rdev,
13337                                 struct wireless_dev *wdev,
13338                                 enum nl80211_commands cmd)
13339 {
13340         struct sk_buff *msg;
13341
13342         WARN_ON(cmd != NL80211_CMD_NEW_INTERFACE &&
13343                 cmd != NL80211_CMD_DEL_INTERFACE);
13344
13345         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13346         if (!msg)
13347                 return;
13348
13349         if (nl80211_send_iface(msg, 0, 0, 0, rdev, wdev,
13350                                cmd == NL80211_CMD_DEL_INTERFACE) < 0) {
13351                 nlmsg_free(msg);
13352                 return;
13353         }
13354
13355         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13356                                 NL80211_MCGRP_CONFIG, GFP_KERNEL);
13357 }
13358
13359 static int nl80211_add_scan_req(struct sk_buff *msg,
13360                                 struct cfg80211_registered_device *rdev)
13361 {
13362         struct cfg80211_scan_request *req = rdev->scan_req;
13363         struct nlattr *nest;
13364         int i;
13365
13366         if (WARN_ON(!req))
13367                 return 0;
13368
13369         nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS);
13370         if (!nest)
13371                 goto nla_put_failure;
13372         for (i = 0; i < req->n_ssids; i++) {
13373                 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid))
13374                         goto nla_put_failure;
13375         }
13376         nla_nest_end(msg, nest);
13377
13378         nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
13379         if (!nest)
13380                 goto nla_put_failure;
13381         for (i = 0; i < req->n_channels; i++) {
13382                 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
13383                         goto nla_put_failure;
13384         }
13385         nla_nest_end(msg, nest);
13386
13387         if (req->ie &&
13388             nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie))
13389                 goto nla_put_failure;
13390
13391         if (req->flags &&
13392             nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags))
13393                 goto nla_put_failure;
13394
13395         if (req->info.scan_start_tsf &&
13396             (nla_put_u64_64bit(msg, NL80211_ATTR_SCAN_START_TIME_TSF,
13397                                req->info.scan_start_tsf, NL80211_BSS_PAD) ||
13398              nla_put(msg, NL80211_ATTR_SCAN_START_TIME_TSF_BSSID, ETH_ALEN,
13399                      req->info.tsf_bssid)))
13400                 goto nla_put_failure;
13401
13402         return 0;
13403  nla_put_failure:
13404         return -ENOBUFS;
13405 }
13406
13407 static int nl80211_prep_scan_msg(struct sk_buff *msg,
13408                                  struct cfg80211_registered_device *rdev,
13409                                  struct wireless_dev *wdev,
13410                                  u32 portid, u32 seq, int flags,
13411                                  u32 cmd)
13412 {
13413         void *hdr;
13414
13415         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
13416         if (!hdr)
13417                 return -1;
13418
13419         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13420             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
13421                                          wdev->netdev->ifindex)) ||
13422             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
13423                               NL80211_ATTR_PAD))
13424                 goto nla_put_failure;
13425
13426         /* ignore errors and send incomplete event anyway */
13427         nl80211_add_scan_req(msg, rdev);
13428
13429         genlmsg_end(msg, hdr);
13430         return 0;
13431
13432  nla_put_failure:
13433         genlmsg_cancel(msg, hdr);
13434         return -EMSGSIZE;
13435 }
13436
13437 static int
13438 nl80211_prep_sched_scan_msg(struct sk_buff *msg,
13439                             struct cfg80211_sched_scan_request *req, u32 cmd)
13440 {
13441         void *hdr;
13442
13443         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
13444         if (!hdr)
13445                 return -1;
13446
13447         if (nla_put_u32(msg, NL80211_ATTR_WIPHY,
13448                         wiphy_to_rdev(req->wiphy)->wiphy_idx) ||
13449             nla_put_u32(msg, NL80211_ATTR_IFINDEX, req->dev->ifindex) ||
13450             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, req->reqid,
13451                               NL80211_ATTR_PAD))
13452                 goto nla_put_failure;
13453
13454         genlmsg_end(msg, hdr);
13455         return 0;
13456
13457  nla_put_failure:
13458         genlmsg_cancel(msg, hdr);
13459         return -EMSGSIZE;
13460 }
13461
13462 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
13463                              struct wireless_dev *wdev)
13464 {
13465         struct sk_buff *msg;
13466
13467         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13468         if (!msg)
13469                 return;
13470
13471         if (nl80211_prep_scan_msg(msg, rdev, wdev, 0, 0, 0,
13472                                   NL80211_CMD_TRIGGER_SCAN) < 0) {
13473                 nlmsg_free(msg);
13474                 return;
13475         }
13476
13477         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13478                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
13479 }
13480
13481 struct sk_buff *nl80211_build_scan_msg(struct cfg80211_registered_device *rdev,
13482                                        struct wireless_dev *wdev, bool aborted)
13483 {
13484         struct sk_buff *msg;
13485
13486         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13487         if (!msg)
13488                 return NULL;
13489
13490         if (nl80211_prep_scan_msg(msg, rdev, wdev, 0, 0, 0,
13491                                   aborted ? NL80211_CMD_SCAN_ABORTED :
13492                                             NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
13493                 nlmsg_free(msg);
13494                 return NULL;
13495         }
13496
13497         return msg;
13498 }
13499
13500 /* send message created by nl80211_build_scan_msg() */
13501 void nl80211_send_scan_msg(struct cfg80211_registered_device *rdev,
13502                            struct sk_buff *msg)
13503 {
13504         if (!msg)
13505                 return;
13506
13507         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13508                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
13509 }
13510
13511 void nl80211_send_sched_scan(struct cfg80211_sched_scan_request *req, u32 cmd)
13512 {
13513         struct sk_buff *msg;
13514
13515         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13516         if (!msg)
13517                 return;
13518
13519         if (nl80211_prep_sched_scan_msg(msg, req, cmd) < 0) {
13520                 nlmsg_free(msg);
13521                 return;
13522         }
13523
13524         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(req->wiphy), msg, 0,
13525                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
13526 }
13527
13528 static bool nl80211_reg_change_event_fill(struct sk_buff *msg,
13529                                           struct regulatory_request *request)
13530 {
13531         /* Userspace can always count this one always being set */
13532         if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator))
13533                 goto nla_put_failure;
13534
13535         if (request->alpha2[0] == '0' && request->alpha2[1] == '0') {
13536                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
13537                                NL80211_REGDOM_TYPE_WORLD))
13538                         goto nla_put_failure;
13539         } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') {
13540                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
13541                                NL80211_REGDOM_TYPE_CUSTOM_WORLD))
13542                         goto nla_put_failure;
13543         } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
13544                    request->intersect) {
13545                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
13546                                NL80211_REGDOM_TYPE_INTERSECTION))
13547                         goto nla_put_failure;
13548         } else {
13549                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
13550                                NL80211_REGDOM_TYPE_COUNTRY) ||
13551                     nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
13552                                    request->alpha2))
13553                         goto nla_put_failure;
13554         }
13555
13556         if (request->wiphy_idx != WIPHY_IDX_INVALID) {
13557                 struct wiphy *wiphy = wiphy_idx_to_wiphy(request->wiphy_idx);
13558
13559                 if (wiphy &&
13560                     nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx))
13561                         goto nla_put_failure;
13562
13563                 if (wiphy &&
13564                     wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
13565                     nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
13566                         goto nla_put_failure;
13567         }
13568
13569         return true;
13570
13571 nla_put_failure:
13572         return false;
13573 }
13574
13575 /*
13576  * This can happen on global regulatory changes or device specific settings
13577  * based on custom regulatory domains.
13578  */
13579 void nl80211_common_reg_change_event(enum nl80211_commands cmd_id,
13580                                      struct regulatory_request *request)
13581 {
13582         struct sk_buff *msg;
13583         void *hdr;
13584
13585         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13586         if (!msg)
13587                 return;
13588
13589         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd_id);
13590         if (!hdr) {
13591                 nlmsg_free(msg);
13592                 return;
13593         }
13594
13595         if (nl80211_reg_change_event_fill(msg, request) == false)
13596                 goto nla_put_failure;
13597
13598         genlmsg_end(msg, hdr);
13599
13600         rcu_read_lock();
13601         genlmsg_multicast_allns(&nl80211_fam, msg, 0,
13602                                 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
13603         rcu_read_unlock();
13604
13605         return;
13606
13607 nla_put_failure:
13608         genlmsg_cancel(msg, hdr);
13609         nlmsg_free(msg);
13610 }
13611
13612 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
13613                                     struct net_device *netdev,
13614                                     const u8 *buf, size_t len,
13615                                     enum nl80211_commands cmd, gfp_t gfp,
13616                                     int uapsd_queues)
13617 {
13618         struct sk_buff *msg;
13619         void *hdr;
13620
13621         msg = nlmsg_new(100 + len, gfp);
13622         if (!msg)
13623                 return;
13624
13625         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
13626         if (!hdr) {
13627                 nlmsg_free(msg);
13628                 return;
13629         }
13630
13631         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13632             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13633             nla_put(msg, NL80211_ATTR_FRAME, len, buf))
13634                 goto nla_put_failure;
13635
13636         if (uapsd_queues >= 0) {
13637                 struct nlattr *nla_wmm =
13638                         nla_nest_start(msg, NL80211_ATTR_STA_WME);
13639                 if (!nla_wmm)
13640                         goto nla_put_failure;
13641
13642                 if (nla_put_u8(msg, NL80211_STA_WME_UAPSD_QUEUES,
13643                                uapsd_queues))
13644                         goto nla_put_failure;
13645
13646                 nla_nest_end(msg, nla_wmm);
13647         }
13648
13649         genlmsg_end(msg, hdr);
13650
13651         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13652                                 NL80211_MCGRP_MLME, gfp);
13653         return;
13654
13655  nla_put_failure:
13656         genlmsg_cancel(msg, hdr);
13657         nlmsg_free(msg);
13658 }
13659
13660 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
13661                           struct net_device *netdev, const u8 *buf,
13662                           size_t len, gfp_t gfp)
13663 {
13664         nl80211_send_mlme_event(rdev, netdev, buf, len,
13665                                 NL80211_CMD_AUTHENTICATE, gfp, -1);
13666 }
13667
13668 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
13669                            struct net_device *netdev, const u8 *buf,
13670                            size_t len, gfp_t gfp, int uapsd_queues)
13671 {
13672         nl80211_send_mlme_event(rdev, netdev, buf, len,
13673                                 NL80211_CMD_ASSOCIATE, gfp, uapsd_queues);
13674 }
13675
13676 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
13677                          struct net_device *netdev, const u8 *buf,
13678                          size_t len, gfp_t gfp)
13679 {
13680         nl80211_send_mlme_event(rdev, netdev, buf, len,
13681                                 NL80211_CMD_DEAUTHENTICATE, gfp, -1);
13682 }
13683
13684 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
13685                            struct net_device *netdev, const u8 *buf,
13686                            size_t len, gfp_t gfp)
13687 {
13688         nl80211_send_mlme_event(rdev, netdev, buf, len,
13689                                 NL80211_CMD_DISASSOCIATE, gfp, -1);
13690 }
13691
13692 void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf,
13693                                   size_t len)
13694 {
13695         struct wireless_dev *wdev = dev->ieee80211_ptr;
13696         struct wiphy *wiphy = wdev->wiphy;
13697         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13698         const struct ieee80211_mgmt *mgmt = (void *)buf;
13699         u32 cmd;
13700
13701         if (WARN_ON(len < 2))
13702                 return;
13703
13704         if (ieee80211_is_deauth(mgmt->frame_control))
13705                 cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE;
13706         else
13707                 cmd = NL80211_CMD_UNPROT_DISASSOCIATE;
13708
13709         trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len);
13710         nl80211_send_mlme_event(rdev, dev, buf, len, cmd, GFP_ATOMIC, -1);
13711 }
13712 EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt);
13713
13714 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
13715                                       struct net_device *netdev, int cmd,
13716                                       const u8 *addr, gfp_t gfp)
13717 {
13718         struct sk_buff *msg;
13719         void *hdr;
13720
13721         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13722         if (!msg)
13723                 return;
13724
13725         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
13726         if (!hdr) {
13727                 nlmsg_free(msg);
13728                 return;
13729         }
13730
13731         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13732             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13733             nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
13734             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
13735                 goto nla_put_failure;
13736
13737         genlmsg_end(msg, hdr);
13738
13739         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13740                                 NL80211_MCGRP_MLME, gfp);
13741         return;
13742
13743  nla_put_failure:
13744         genlmsg_cancel(msg, hdr);
13745         nlmsg_free(msg);
13746 }
13747
13748 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
13749                                struct net_device *netdev, const u8 *addr,
13750                                gfp_t gfp)
13751 {
13752         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
13753                                   addr, gfp);
13754 }
13755
13756 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
13757                                 struct net_device *netdev, const u8 *addr,
13758                                 gfp_t gfp)
13759 {
13760         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
13761                                   addr, gfp);
13762 }
13763
13764 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
13765                                  struct net_device *netdev,
13766                                  struct cfg80211_connect_resp_params *cr,
13767                                  gfp_t gfp)
13768 {
13769         struct sk_buff *msg;
13770         void *hdr;
13771
13772         msg = nlmsg_new(100 + cr->req_ie_len + cr->resp_ie_len +
13773                         cr->fils_kek_len + cr->pmk_len +
13774                         (cr->pmkid ? WLAN_PMKID_LEN : 0), gfp);
13775         if (!msg)
13776                 return;
13777
13778         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
13779         if (!hdr) {
13780                 nlmsg_free(msg);
13781                 return;
13782         }
13783
13784         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13785             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13786             (cr->bssid &&
13787              nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, cr->bssid)) ||
13788             nla_put_u16(msg, NL80211_ATTR_STATUS_CODE,
13789                         cr->status < 0 ? WLAN_STATUS_UNSPECIFIED_FAILURE :
13790                         cr->status) ||
13791             (cr->status < 0 &&
13792              (nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
13793               nla_put_u32(msg, NL80211_ATTR_TIMEOUT_REASON,
13794                           cr->timeout_reason))) ||
13795             (cr->req_ie &&
13796              nla_put(msg, NL80211_ATTR_REQ_IE, cr->req_ie_len, cr->req_ie)) ||
13797             (cr->resp_ie &&
13798              nla_put(msg, NL80211_ATTR_RESP_IE, cr->resp_ie_len,
13799                      cr->resp_ie)) ||
13800             (cr->update_erp_next_seq_num &&
13801              nla_put_u16(msg, NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM,
13802                          cr->fils_erp_next_seq_num)) ||
13803             (cr->status == WLAN_STATUS_SUCCESS &&
13804              ((cr->fils_kek &&
13805                nla_put(msg, NL80211_ATTR_FILS_KEK, cr->fils_kek_len,
13806                        cr->fils_kek)) ||
13807               (cr->pmk &&
13808                nla_put(msg, NL80211_ATTR_PMK, cr->pmk_len, cr->pmk)) ||
13809               (cr->pmkid &&
13810                nla_put(msg, NL80211_ATTR_PMKID, WLAN_PMKID_LEN, cr->pmkid)))))
13811                 goto nla_put_failure;
13812
13813         genlmsg_end(msg, hdr);
13814
13815         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13816                                 NL80211_MCGRP_MLME, gfp);
13817         return;
13818
13819  nla_put_failure:
13820         genlmsg_cancel(msg, hdr);
13821         nlmsg_free(msg);
13822 }
13823
13824 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
13825                          struct net_device *netdev,
13826                          struct cfg80211_roam_info *info, gfp_t gfp)
13827 {
13828         struct sk_buff *msg;
13829         void *hdr;
13830         const u8 *bssid = info->bss ? info->bss->bssid : info->bssid;
13831
13832         msg = nlmsg_new(100 + info->req_ie_len + info->resp_ie_len, gfp);
13833         if (!msg)
13834                 return;
13835
13836         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
13837         if (!hdr) {
13838                 nlmsg_free(msg);
13839                 return;
13840         }
13841
13842         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13843             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13844             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid) ||
13845             (info->req_ie &&
13846              nla_put(msg, NL80211_ATTR_REQ_IE, info->req_ie_len,
13847                      info->req_ie)) ||
13848             (info->resp_ie &&
13849              nla_put(msg, NL80211_ATTR_RESP_IE, info->resp_ie_len,
13850                      info->resp_ie)))
13851                 goto nla_put_failure;
13852
13853         genlmsg_end(msg, hdr);
13854
13855         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13856                                 NL80211_MCGRP_MLME, gfp);
13857         return;
13858
13859  nla_put_failure:
13860         genlmsg_cancel(msg, hdr);
13861         nlmsg_free(msg);
13862 }
13863
13864 void nl80211_send_port_authorized(struct cfg80211_registered_device *rdev,
13865                                   struct net_device *netdev, const u8 *bssid)
13866 {
13867         struct sk_buff *msg;
13868         void *hdr;
13869
13870         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13871         if (!msg)
13872                 return;
13873
13874         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PORT_AUTHORIZED);
13875         if (!hdr) {
13876                 nlmsg_free(msg);
13877                 return;
13878         }
13879
13880         if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
13881                 goto nla_put_failure;
13882
13883         genlmsg_end(msg, hdr);
13884
13885         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13886                                 NL80211_MCGRP_MLME, GFP_KERNEL);
13887         return;
13888
13889  nla_put_failure:
13890         genlmsg_cancel(msg, hdr);
13891         nlmsg_free(msg);
13892 }
13893
13894 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
13895                                struct net_device *netdev, u16 reason,
13896                                const u8 *ie, size_t ie_len, bool from_ap)
13897 {
13898         struct sk_buff *msg;
13899         void *hdr;
13900
13901         msg = nlmsg_new(100 + ie_len, GFP_KERNEL);
13902         if (!msg)
13903                 return;
13904
13905         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
13906         if (!hdr) {
13907                 nlmsg_free(msg);
13908                 return;
13909         }
13910
13911         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13912             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13913             (from_ap && reason &&
13914              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) ||
13915             (from_ap &&
13916              nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) ||
13917             (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie)))
13918                 goto nla_put_failure;
13919
13920         genlmsg_end(msg, hdr);
13921
13922         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13923                                 NL80211_MCGRP_MLME, GFP_KERNEL);
13924         return;
13925
13926  nla_put_failure:
13927         genlmsg_cancel(msg, hdr);
13928         nlmsg_free(msg);
13929 }
13930
13931 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
13932                              struct net_device *netdev, const u8 *bssid,
13933                              gfp_t gfp)
13934 {
13935         struct sk_buff *msg;
13936         void *hdr;
13937
13938         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13939         if (!msg)
13940                 return;
13941
13942         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
13943         if (!hdr) {
13944                 nlmsg_free(msg);
13945                 return;
13946         }
13947
13948         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13949             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13950             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
13951                 goto nla_put_failure;
13952
13953         genlmsg_end(msg, hdr);
13954
13955         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13956                                 NL80211_MCGRP_MLME, gfp);
13957         return;
13958
13959  nla_put_failure:
13960         genlmsg_cancel(msg, hdr);
13961         nlmsg_free(msg);
13962 }
13963
13964 void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr,
13965                                         const u8* ie, u8 ie_len, gfp_t gfp)
13966 {
13967         struct wireless_dev *wdev = dev->ieee80211_ptr;
13968         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
13969         struct sk_buff *msg;
13970         void *hdr;
13971
13972         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT))
13973                 return;
13974
13975         trace_cfg80211_notify_new_peer_candidate(dev, addr);
13976
13977         msg = nlmsg_new(100 + ie_len, gfp);
13978         if (!msg)
13979                 return;
13980
13981         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
13982         if (!hdr) {
13983                 nlmsg_free(msg);
13984                 return;
13985         }
13986
13987         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13988             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
13989             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
13990             (ie_len && ie &&
13991              nla_put(msg, NL80211_ATTR_IE, ie_len , ie)))
13992                 goto nla_put_failure;
13993
13994         genlmsg_end(msg, hdr);
13995
13996         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13997                                 NL80211_MCGRP_MLME, gfp);
13998         return;
13999
14000  nla_put_failure:
14001         genlmsg_cancel(msg, hdr);
14002         nlmsg_free(msg);
14003 }
14004 EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate);
14005
14006 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
14007                                  struct net_device *netdev, const u8 *addr,
14008                                  enum nl80211_key_type key_type, int key_id,
14009                                  const u8 *tsc, gfp_t gfp)
14010 {
14011         struct sk_buff *msg;
14012         void *hdr;
14013
14014         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14015         if (!msg)
14016                 return;
14017
14018         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
14019         if (!hdr) {
14020                 nlmsg_free(msg);
14021                 return;
14022         }
14023
14024         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14025             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
14026             (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
14027             nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) ||
14028             (key_id != -1 &&
14029              nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) ||
14030             (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc)))
14031                 goto nla_put_failure;
14032
14033         genlmsg_end(msg, hdr);
14034
14035         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14036                                 NL80211_MCGRP_MLME, gfp);
14037         return;
14038
14039  nla_put_failure:
14040         genlmsg_cancel(msg, hdr);
14041         nlmsg_free(msg);
14042 }
14043
14044 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
14045                                     struct ieee80211_channel *channel_before,
14046                                     struct ieee80211_channel *channel_after)
14047 {
14048         struct sk_buff *msg;
14049         void *hdr;
14050         struct nlattr *nl_freq;
14051
14052         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
14053         if (!msg)
14054                 return;
14055
14056         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
14057         if (!hdr) {
14058                 nlmsg_free(msg);
14059                 return;
14060         }
14061
14062         /*
14063          * Since we are applying the beacon hint to a wiphy we know its
14064          * wiphy_idx is valid
14065          */
14066         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
14067                 goto nla_put_failure;
14068
14069         /* Before */
14070         nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE);
14071         if (!nl_freq)
14072                 goto nla_put_failure;
14073         if (nl80211_msg_put_channel(msg, channel_before, false))
14074                 goto nla_put_failure;
14075         nla_nest_end(msg, nl_freq);
14076
14077         /* After */
14078         nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER);
14079         if (!nl_freq)
14080                 goto nla_put_failure;
14081         if (nl80211_msg_put_channel(msg, channel_after, false))
14082                 goto nla_put_failure;
14083         nla_nest_end(msg, nl_freq);
14084
14085         genlmsg_end(msg, hdr);
14086
14087         rcu_read_lock();
14088         genlmsg_multicast_allns(&nl80211_fam, msg, 0,
14089                                 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
14090         rcu_read_unlock();
14091
14092         return;
14093
14094 nla_put_failure:
14095         genlmsg_cancel(msg, hdr);
14096         nlmsg_free(msg);
14097 }
14098
14099 static void nl80211_send_remain_on_chan_event(
14100         int cmd, struct cfg80211_registered_device *rdev,
14101         struct wireless_dev *wdev, u64 cookie,
14102         struct ieee80211_channel *chan,
14103         unsigned int duration, gfp_t gfp)
14104 {
14105         struct sk_buff *msg;
14106         void *hdr;
14107
14108         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14109         if (!msg)
14110                 return;
14111
14112         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
14113         if (!hdr) {
14114                 nlmsg_free(msg);
14115                 return;
14116         }
14117
14118         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14119             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
14120                                          wdev->netdev->ifindex)) ||
14121             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
14122                               NL80211_ATTR_PAD) ||
14123             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) ||
14124             nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
14125                         NL80211_CHAN_NO_HT) ||
14126             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
14127                               NL80211_ATTR_PAD))
14128                 goto nla_put_failure;
14129
14130         if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL &&
14131             nla_put_u32(msg, NL80211_ATTR_DURATION, duration))
14132                 goto nla_put_failure;
14133
14134         genlmsg_end(msg, hdr);
14135
14136         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14137                                 NL80211_MCGRP_MLME, gfp);
14138         return;
14139
14140  nla_put_failure:
14141         genlmsg_cancel(msg, hdr);
14142         nlmsg_free(msg);
14143 }
14144
14145 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie,
14146                                struct ieee80211_channel *chan,
14147                                unsigned int duration, gfp_t gfp)
14148 {
14149         struct wiphy *wiphy = wdev->wiphy;
14150         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14151
14152         trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration);
14153         nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
14154                                           rdev, wdev, cookie, chan,
14155                                           duration, gfp);
14156 }
14157 EXPORT_SYMBOL(cfg80211_ready_on_channel);
14158
14159 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie,
14160                                         struct ieee80211_channel *chan,
14161                                         gfp_t gfp)
14162 {
14163         struct wiphy *wiphy = wdev->wiphy;
14164         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14165
14166         trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan);
14167         nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
14168                                           rdev, wdev, cookie, chan, 0, gfp);
14169 }
14170 EXPORT_SYMBOL(cfg80211_remain_on_channel_expired);
14171
14172 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr,
14173                       struct station_info *sinfo, gfp_t gfp)
14174 {
14175         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
14176         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14177         struct sk_buff *msg;
14178
14179         trace_cfg80211_new_sta(dev, mac_addr, sinfo);
14180
14181         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14182         if (!msg)
14183                 return;
14184
14185         if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION, 0, 0, 0,
14186                                  rdev, dev, mac_addr, sinfo) < 0) {
14187                 nlmsg_free(msg);
14188                 return;
14189         }
14190
14191         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14192                                 NL80211_MCGRP_MLME, gfp);
14193 }
14194 EXPORT_SYMBOL(cfg80211_new_sta);
14195
14196 void cfg80211_del_sta_sinfo(struct net_device *dev, const u8 *mac_addr,
14197                             struct station_info *sinfo, gfp_t gfp)
14198 {
14199         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
14200         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14201         struct sk_buff *msg;
14202         struct station_info empty_sinfo = {};
14203
14204         if (!sinfo)
14205                 sinfo = &empty_sinfo;
14206
14207         trace_cfg80211_del_sta(dev, mac_addr);
14208
14209         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14210         if (!msg)
14211                 return;
14212
14213         if (nl80211_send_station(msg, NL80211_CMD_DEL_STATION, 0, 0, 0,
14214                                  rdev, dev, mac_addr, sinfo) < 0) {
14215                 nlmsg_free(msg);
14216                 return;
14217         }
14218
14219         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14220                                 NL80211_MCGRP_MLME, gfp);
14221 }
14222 EXPORT_SYMBOL(cfg80211_del_sta_sinfo);
14223
14224 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr,
14225                           enum nl80211_connect_failed_reason reason,
14226                           gfp_t gfp)
14227 {
14228         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
14229         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14230         struct sk_buff *msg;
14231         void *hdr;
14232
14233         msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
14234         if (!msg)
14235                 return;
14236
14237         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED);
14238         if (!hdr) {
14239                 nlmsg_free(msg);
14240                 return;
14241         }
14242
14243         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
14244             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
14245             nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason))
14246                 goto nla_put_failure;
14247
14248         genlmsg_end(msg, hdr);
14249
14250         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14251                                 NL80211_MCGRP_MLME, gfp);
14252         return;
14253
14254  nla_put_failure:
14255         genlmsg_cancel(msg, hdr);
14256         nlmsg_free(msg);
14257 }
14258 EXPORT_SYMBOL(cfg80211_conn_failed);
14259
14260 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
14261                                        const u8 *addr, gfp_t gfp)
14262 {
14263         struct wireless_dev *wdev = dev->ieee80211_ptr;
14264         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
14265         struct sk_buff *msg;
14266         void *hdr;
14267         u32 nlportid = ACCESS_ONCE(wdev->ap_unexpected_nlportid);
14268
14269         if (!nlportid)
14270                 return false;
14271
14272         msg = nlmsg_new(100, gfp);
14273         if (!msg)
14274                 return true;
14275
14276         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
14277         if (!hdr) {
14278                 nlmsg_free(msg);
14279                 return true;
14280         }
14281
14282         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14283             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
14284             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
14285                 goto nla_put_failure;
14286
14287         genlmsg_end(msg, hdr);
14288         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
14289         return true;
14290
14291  nla_put_failure:
14292         genlmsg_cancel(msg, hdr);
14293         nlmsg_free(msg);
14294         return true;
14295 }
14296
14297 bool cfg80211_rx_spurious_frame(struct net_device *dev,
14298                                 const u8 *addr, gfp_t gfp)
14299 {
14300         struct wireless_dev *wdev = dev->ieee80211_ptr;
14301         bool ret;
14302
14303         trace_cfg80211_rx_spurious_frame(dev, addr);
14304
14305         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
14306                     wdev->iftype != NL80211_IFTYPE_P2P_GO)) {
14307                 trace_cfg80211_return_bool(false);
14308                 return false;
14309         }
14310         ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
14311                                          addr, gfp);
14312         trace_cfg80211_return_bool(ret);
14313         return ret;
14314 }
14315 EXPORT_SYMBOL(cfg80211_rx_spurious_frame);
14316
14317 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev,
14318                                         const u8 *addr, gfp_t gfp)
14319 {
14320         struct wireless_dev *wdev = dev->ieee80211_ptr;
14321         bool ret;
14322
14323         trace_cfg80211_rx_unexpected_4addr_frame(dev, addr);
14324
14325         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
14326                     wdev->iftype != NL80211_IFTYPE_P2P_GO &&
14327                     wdev->iftype != NL80211_IFTYPE_AP_VLAN)) {
14328                 trace_cfg80211_return_bool(false);
14329                 return false;
14330         }
14331         ret = __nl80211_unexpected_frame(dev,
14332                                          NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
14333                                          addr, gfp);
14334         trace_cfg80211_return_bool(ret);
14335         return ret;
14336 }
14337 EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame);
14338
14339 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
14340                       struct wireless_dev *wdev, u32 nlportid,
14341                       int freq, int sig_dbm,
14342                       const u8 *buf, size_t len, u32 flags, gfp_t gfp)
14343 {
14344         struct net_device *netdev = wdev->netdev;
14345         struct sk_buff *msg;
14346         void *hdr;
14347
14348         msg = nlmsg_new(100 + len, gfp);
14349         if (!msg)
14350                 return -ENOMEM;
14351
14352         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
14353         if (!hdr) {
14354                 nlmsg_free(msg);
14355                 return -ENOMEM;
14356         }
14357
14358         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14359             (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
14360                                         netdev->ifindex)) ||
14361             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
14362                               NL80211_ATTR_PAD) ||
14363             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) ||
14364             (sig_dbm &&
14365              nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
14366             nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
14367             (flags &&
14368              nla_put_u32(msg, NL80211_ATTR_RXMGMT_FLAGS, flags)))
14369                 goto nla_put_failure;
14370
14371         genlmsg_end(msg, hdr);
14372
14373         return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
14374
14375  nla_put_failure:
14376         genlmsg_cancel(msg, hdr);
14377         nlmsg_free(msg);
14378         return -ENOBUFS;
14379 }
14380
14381 void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie,
14382                              const u8 *buf, size_t len, bool ack, gfp_t gfp)
14383 {
14384         struct wiphy *wiphy = wdev->wiphy;
14385         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14386         struct net_device *netdev = wdev->netdev;
14387         struct sk_buff *msg;
14388         void *hdr;
14389
14390         trace_cfg80211_mgmt_tx_status(wdev, cookie, ack);
14391
14392         msg = nlmsg_new(100 + len, gfp);
14393         if (!msg)
14394                 return;
14395
14396         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS);
14397         if (!hdr) {
14398                 nlmsg_free(msg);
14399                 return;
14400         }
14401
14402         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14403             (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
14404                                    netdev->ifindex)) ||
14405             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
14406                               NL80211_ATTR_PAD) ||
14407             nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
14408             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
14409                               NL80211_ATTR_PAD) ||
14410             (ack && nla_put_flag(msg, NL80211_ATTR_ACK)))
14411                 goto nla_put_failure;
14412
14413         genlmsg_end(msg, hdr);
14414
14415         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14416                                 NL80211_MCGRP_MLME, gfp);
14417         return;
14418
14419  nla_put_failure:
14420         genlmsg_cancel(msg, hdr);
14421         nlmsg_free(msg);
14422 }
14423 EXPORT_SYMBOL(cfg80211_mgmt_tx_status);
14424
14425 static struct sk_buff *cfg80211_prepare_cqm(struct net_device *dev,
14426                                             const char *mac, gfp_t gfp)
14427 {
14428         struct wireless_dev *wdev = dev->ieee80211_ptr;
14429         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
14430         struct sk_buff *msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14431         void **cb;
14432
14433         if (!msg)
14434                 return NULL;
14435
14436         cb = (void **)msg->cb;
14437
14438         cb[0] = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
14439         if (!cb[0]) {
14440                 nlmsg_free(msg);
14441                 return NULL;
14442         }
14443
14444         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14445             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
14446                 goto nla_put_failure;
14447
14448         if (mac && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
14449                 goto nla_put_failure;
14450
14451         cb[1] = nla_nest_start(msg, NL80211_ATTR_CQM);
14452         if (!cb[1])
14453                 goto nla_put_failure;
14454
14455         cb[2] = rdev;
14456
14457         return msg;
14458  nla_put_failure:
14459         nlmsg_free(msg);
14460         return NULL;
14461 }
14462
14463 static void cfg80211_send_cqm(struct sk_buff *msg, gfp_t gfp)
14464 {
14465         void **cb = (void **)msg->cb;
14466         struct cfg80211_registered_device *rdev = cb[2];
14467
14468         nla_nest_end(msg, cb[1]);
14469         genlmsg_end(msg, cb[0]);
14470
14471         memset(msg->cb, 0, sizeof(msg->cb));
14472
14473         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14474                                 NL80211_MCGRP_MLME, gfp);
14475 }
14476
14477 void cfg80211_cqm_rssi_notify(struct net_device *dev,
14478                               enum nl80211_cqm_rssi_threshold_event rssi_event,
14479                               s32 rssi_level, gfp_t gfp)
14480 {
14481         struct sk_buff *msg;
14482         struct wireless_dev *wdev = dev->ieee80211_ptr;
14483         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
14484
14485         trace_cfg80211_cqm_rssi_notify(dev, rssi_event, rssi_level);
14486
14487         if (WARN_ON(rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW &&
14488                     rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH))
14489                 return;
14490
14491         if (wdev->cqm_config) {
14492                 wdev->cqm_config->last_rssi_event_value = rssi_level;
14493
14494                 cfg80211_cqm_rssi_update(rdev, dev);
14495
14496                 if (rssi_level == 0)
14497                         rssi_level = wdev->cqm_config->last_rssi_event_value;
14498         }
14499
14500         msg = cfg80211_prepare_cqm(dev, NULL, gfp);
14501         if (!msg)
14502                 return;
14503
14504         if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
14505                         rssi_event))
14506                 goto nla_put_failure;
14507
14508         if (rssi_level && nla_put_s32(msg, NL80211_ATTR_CQM_RSSI_LEVEL,
14509                                       rssi_level))
14510                 goto nla_put_failure;
14511
14512         cfg80211_send_cqm(msg, gfp);
14513
14514         return;
14515
14516  nla_put_failure:
14517         nlmsg_free(msg);
14518 }
14519 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify);
14520
14521 void cfg80211_cqm_txe_notify(struct net_device *dev,
14522                              const u8 *peer, u32 num_packets,
14523                              u32 rate, u32 intvl, gfp_t gfp)
14524 {
14525         struct sk_buff *msg;
14526
14527         msg = cfg80211_prepare_cqm(dev, peer, gfp);
14528         if (!msg)
14529                 return;
14530
14531         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets))
14532                 goto nla_put_failure;
14533
14534         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate))
14535                 goto nla_put_failure;
14536
14537         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl))
14538                 goto nla_put_failure;
14539
14540         cfg80211_send_cqm(msg, gfp);
14541         return;
14542
14543  nla_put_failure:
14544         nlmsg_free(msg);
14545 }
14546 EXPORT_SYMBOL(cfg80211_cqm_txe_notify);
14547
14548 void cfg80211_cqm_pktloss_notify(struct net_device *dev,
14549                                  const u8 *peer, u32 num_packets, gfp_t gfp)
14550 {
14551         struct sk_buff *msg;
14552
14553         trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets);
14554
14555         msg = cfg80211_prepare_cqm(dev, peer, gfp);
14556         if (!msg)
14557                 return;
14558
14559         if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets))
14560                 goto nla_put_failure;
14561
14562         cfg80211_send_cqm(msg, gfp);
14563         return;
14564
14565  nla_put_failure:
14566         nlmsg_free(msg);
14567 }
14568 EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify);
14569
14570 void cfg80211_cqm_beacon_loss_notify(struct net_device *dev, gfp_t gfp)
14571 {
14572         struct sk_buff *msg;
14573
14574         msg = cfg80211_prepare_cqm(dev, NULL, gfp);
14575         if (!msg)
14576                 return;
14577
14578         if (nla_put_flag(msg, NL80211_ATTR_CQM_BEACON_LOSS_EVENT))
14579                 goto nla_put_failure;
14580
14581         cfg80211_send_cqm(msg, gfp);
14582         return;
14583
14584  nla_put_failure:
14585         nlmsg_free(msg);
14586 }
14587 EXPORT_SYMBOL(cfg80211_cqm_beacon_loss_notify);
14588
14589 static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
14590                                      struct net_device *netdev, const u8 *bssid,
14591                                      const u8 *replay_ctr, gfp_t gfp)
14592 {
14593         struct sk_buff *msg;
14594         struct nlattr *rekey_attr;
14595         void *hdr;
14596
14597         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14598         if (!msg)
14599                 return;
14600
14601         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
14602         if (!hdr) {
14603                 nlmsg_free(msg);
14604                 return;
14605         }
14606
14607         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14608             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
14609             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
14610                 goto nla_put_failure;
14611
14612         rekey_attr = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA);
14613         if (!rekey_attr)
14614                 goto nla_put_failure;
14615
14616         if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR,
14617                     NL80211_REPLAY_CTR_LEN, replay_ctr))
14618                 goto nla_put_failure;
14619
14620         nla_nest_end(msg, rekey_attr);
14621
14622         genlmsg_end(msg, hdr);
14623
14624         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14625                                 NL80211_MCGRP_MLME, gfp);
14626         return;
14627
14628  nla_put_failure:
14629         genlmsg_cancel(msg, hdr);
14630         nlmsg_free(msg);
14631 }
14632
14633 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid,
14634                                const u8 *replay_ctr, gfp_t gfp)
14635 {
14636         struct wireless_dev *wdev = dev->ieee80211_ptr;
14637         struct wiphy *wiphy = wdev->wiphy;
14638         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14639
14640         trace_cfg80211_gtk_rekey_notify(dev, bssid);
14641         nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp);
14642 }
14643 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify);
14644
14645 static void
14646 nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
14647                                struct net_device *netdev, int index,
14648                                const u8 *bssid, bool preauth, gfp_t gfp)
14649 {
14650         struct sk_buff *msg;
14651         struct nlattr *attr;
14652         void *hdr;
14653
14654         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14655         if (!msg)
14656                 return;
14657
14658         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
14659         if (!hdr) {
14660                 nlmsg_free(msg);
14661                 return;
14662         }
14663
14664         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14665             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
14666                 goto nla_put_failure;
14667
14668         attr = nla_nest_start(msg, NL80211_ATTR_PMKSA_CANDIDATE);
14669         if (!attr)
14670                 goto nla_put_failure;
14671
14672         if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) ||
14673             nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) ||
14674             (preauth &&
14675              nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH)))
14676                 goto nla_put_failure;
14677
14678         nla_nest_end(msg, attr);
14679
14680         genlmsg_end(msg, hdr);
14681
14682         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14683                                 NL80211_MCGRP_MLME, gfp);
14684         return;
14685
14686  nla_put_failure:
14687         genlmsg_cancel(msg, hdr);
14688         nlmsg_free(msg);
14689 }
14690
14691 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index,
14692                                      const u8 *bssid, bool preauth, gfp_t gfp)
14693 {
14694         struct wireless_dev *wdev = dev->ieee80211_ptr;
14695         struct wiphy *wiphy = wdev->wiphy;
14696         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14697
14698         trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth);
14699         nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp);
14700 }
14701 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify);
14702
14703 static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev,
14704                                      struct net_device *netdev,
14705                                      struct cfg80211_chan_def *chandef,
14706                                      gfp_t gfp,
14707                                      enum nl80211_commands notif,
14708                                      u8 count)
14709 {
14710         struct sk_buff *msg;
14711         void *hdr;
14712
14713         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14714         if (!msg)
14715                 return;
14716
14717         hdr = nl80211hdr_put(msg, 0, 0, 0, notif);
14718         if (!hdr) {
14719                 nlmsg_free(msg);
14720                 return;
14721         }
14722
14723         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
14724                 goto nla_put_failure;
14725
14726         if (nl80211_send_chandef(msg, chandef))
14727                 goto nla_put_failure;
14728
14729         if ((notif == NL80211_CMD_CH_SWITCH_STARTED_NOTIFY) &&
14730             (nla_put_u32(msg, NL80211_ATTR_CH_SWITCH_COUNT, count)))
14731                         goto nla_put_failure;
14732
14733         genlmsg_end(msg, hdr);
14734
14735         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14736                                 NL80211_MCGRP_MLME, gfp);
14737         return;
14738
14739  nla_put_failure:
14740         genlmsg_cancel(msg, hdr);
14741         nlmsg_free(msg);
14742 }
14743
14744 void cfg80211_ch_switch_notify(struct net_device *dev,
14745                                struct cfg80211_chan_def *chandef)
14746 {
14747         struct wireless_dev *wdev = dev->ieee80211_ptr;
14748         struct wiphy *wiphy = wdev->wiphy;
14749         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14750
14751         ASSERT_WDEV_LOCK(wdev);
14752
14753         trace_cfg80211_ch_switch_notify(dev, chandef);
14754
14755         wdev->chandef = *chandef;
14756         wdev->preset_chandef = *chandef;
14757         nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
14758                                  NL80211_CMD_CH_SWITCH_NOTIFY, 0);
14759 }
14760 EXPORT_SYMBOL(cfg80211_ch_switch_notify);
14761
14762 void cfg80211_ch_switch_started_notify(struct net_device *dev,
14763                                        struct cfg80211_chan_def *chandef,
14764                                        u8 count)
14765 {
14766         struct wireless_dev *wdev = dev->ieee80211_ptr;
14767         struct wiphy *wiphy = wdev->wiphy;
14768         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14769
14770         trace_cfg80211_ch_switch_started_notify(dev, chandef);
14771
14772         nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
14773                                  NL80211_CMD_CH_SWITCH_STARTED_NOTIFY, count);
14774 }
14775 EXPORT_SYMBOL(cfg80211_ch_switch_started_notify);
14776
14777 void
14778 nl80211_radar_notify(struct cfg80211_registered_device *rdev,
14779                      const struct cfg80211_chan_def *chandef,
14780                      enum nl80211_radar_event event,
14781                      struct net_device *netdev, gfp_t gfp)
14782 {
14783         struct sk_buff *msg;
14784         void *hdr;
14785
14786         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14787         if (!msg)
14788                 return;
14789
14790         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT);
14791         if (!hdr) {
14792                 nlmsg_free(msg);
14793                 return;
14794         }
14795
14796         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
14797                 goto nla_put_failure;
14798
14799         /* NOP and radar events don't need a netdev parameter */
14800         if (netdev) {
14801                 struct wireless_dev *wdev = netdev->ieee80211_ptr;
14802
14803                 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
14804                     nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
14805                                       NL80211_ATTR_PAD))
14806                         goto nla_put_failure;
14807         }
14808
14809         if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event))
14810                 goto nla_put_failure;
14811
14812         if (nl80211_send_chandef(msg, chandef))
14813                 goto nla_put_failure;
14814
14815         genlmsg_end(msg, hdr);
14816
14817         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14818                                 NL80211_MCGRP_MLME, gfp);
14819         return;
14820
14821  nla_put_failure:
14822         genlmsg_cancel(msg, hdr);
14823         nlmsg_free(msg);
14824 }
14825
14826 void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
14827                            u64 cookie, bool acked, gfp_t gfp)
14828 {
14829         struct wireless_dev *wdev = dev->ieee80211_ptr;
14830         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
14831         struct sk_buff *msg;
14832         void *hdr;
14833
14834         trace_cfg80211_probe_status(dev, addr, cookie, acked);
14835
14836         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14837
14838         if (!msg)
14839                 return;
14840
14841         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT);
14842         if (!hdr) {
14843                 nlmsg_free(msg);
14844                 return;
14845         }
14846
14847         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14848             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
14849             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
14850             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
14851                               NL80211_ATTR_PAD) ||
14852             (acked && nla_put_flag(msg, NL80211_ATTR_ACK)))
14853                 goto nla_put_failure;
14854
14855         genlmsg_end(msg, hdr);
14856
14857         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14858                                 NL80211_MCGRP_MLME, gfp);
14859         return;
14860
14861  nla_put_failure:
14862         genlmsg_cancel(msg, hdr);
14863         nlmsg_free(msg);
14864 }
14865 EXPORT_SYMBOL(cfg80211_probe_status);
14866
14867 void cfg80211_report_obss_beacon(struct wiphy *wiphy,
14868                                  const u8 *frame, size_t len,
14869                                  int freq, int sig_dbm)
14870 {
14871         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14872         struct sk_buff *msg;
14873         void *hdr;
14874         struct cfg80211_beacon_registration *reg;
14875
14876         trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm);
14877
14878         spin_lock_bh(&rdev->beacon_registrations_lock);
14879         list_for_each_entry(reg, &rdev->beacon_registrations, list) {
14880                 msg = nlmsg_new(len + 100, GFP_ATOMIC);
14881                 if (!msg) {
14882                         spin_unlock_bh(&rdev->beacon_registrations_lock);
14883                         return;
14884                 }
14885
14886                 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
14887                 if (!hdr)
14888                         goto nla_put_failure;
14889
14890                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14891                     (freq &&
14892                      nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq)) ||
14893                     (sig_dbm &&
14894                      nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
14895                     nla_put(msg, NL80211_ATTR_FRAME, len, frame))
14896                         goto nla_put_failure;
14897
14898                 genlmsg_end(msg, hdr);
14899
14900                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid);
14901         }
14902         spin_unlock_bh(&rdev->beacon_registrations_lock);
14903         return;
14904
14905  nla_put_failure:
14906         spin_unlock_bh(&rdev->beacon_registrations_lock);
14907         if (hdr)
14908                 genlmsg_cancel(msg, hdr);
14909         nlmsg_free(msg);
14910 }
14911 EXPORT_SYMBOL(cfg80211_report_obss_beacon);
14912
14913 #ifdef CONFIG_PM
14914 static int cfg80211_net_detect_results(struct sk_buff *msg,
14915                                        struct cfg80211_wowlan_wakeup *wakeup)
14916 {
14917         struct cfg80211_wowlan_nd_info *nd = wakeup->net_detect;
14918         struct nlattr *nl_results, *nl_match, *nl_freqs;
14919         int i, j;
14920
14921         nl_results = nla_nest_start(
14922                 msg, NL80211_WOWLAN_TRIG_NET_DETECT_RESULTS);
14923         if (!nl_results)
14924                 return -EMSGSIZE;
14925
14926         for (i = 0; i < nd->n_matches; i++) {
14927                 struct cfg80211_wowlan_nd_match *match = nd->matches[i];
14928
14929                 nl_match = nla_nest_start(msg, i);
14930                 if (!nl_match)
14931                         break;
14932
14933                 /* The SSID attribute is optional in nl80211, but for
14934                  * simplicity reasons it's always present in the
14935                  * cfg80211 structure.  If a driver can't pass the
14936                  * SSID, that needs to be changed.  A zero length SSID
14937                  * is still a valid SSID (wildcard), so it cannot be
14938                  * used for this purpose.
14939                  */
14940                 if (nla_put(msg, NL80211_ATTR_SSID, match->ssid.ssid_len,
14941                             match->ssid.ssid)) {
14942                         nla_nest_cancel(msg, nl_match);
14943                         goto out;
14944                 }
14945
14946                 if (match->n_channels) {
14947                         nl_freqs = nla_nest_start(
14948                                 msg, NL80211_ATTR_SCAN_FREQUENCIES);
14949                         if (!nl_freqs) {
14950                                 nla_nest_cancel(msg, nl_match);
14951                                 goto out;
14952                         }
14953
14954                         for (j = 0; j < match->n_channels; j++) {
14955                                 if (nla_put_u32(msg, j, match->channels[j])) {
14956                                         nla_nest_cancel(msg, nl_freqs);
14957                                         nla_nest_cancel(msg, nl_match);
14958                                         goto out;
14959                                 }
14960                         }
14961
14962                         nla_nest_end(msg, nl_freqs);
14963                 }
14964
14965                 nla_nest_end(msg, nl_match);
14966         }
14967
14968 out:
14969         nla_nest_end(msg, nl_results);
14970         return 0;
14971 }
14972
14973 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev,
14974                                    struct cfg80211_wowlan_wakeup *wakeup,
14975                                    gfp_t gfp)
14976 {
14977         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
14978         struct sk_buff *msg;
14979         void *hdr;
14980         int size = 200;
14981
14982         trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup);
14983
14984         if (wakeup)
14985                 size += wakeup->packet_present_len;
14986
14987         msg = nlmsg_new(size, gfp);
14988         if (!msg)
14989                 return;
14990
14991         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN);
14992         if (!hdr)
14993                 goto free_msg;
14994
14995         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14996             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
14997                               NL80211_ATTR_PAD))
14998                 goto free_msg;
14999
15000         if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
15001                                         wdev->netdev->ifindex))
15002                 goto free_msg;
15003
15004         if (wakeup) {
15005                 struct nlattr *reasons;
15006
15007                 reasons = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
15008                 if (!reasons)
15009                         goto free_msg;
15010
15011                 if (wakeup->disconnect &&
15012                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT))
15013                         goto free_msg;
15014                 if (wakeup->magic_pkt &&
15015                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT))
15016                         goto free_msg;
15017                 if (wakeup->gtk_rekey_failure &&
15018                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE))
15019                         goto free_msg;
15020                 if (wakeup->eap_identity_req &&
15021                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST))
15022                         goto free_msg;
15023                 if (wakeup->four_way_handshake &&
15024                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE))
15025                         goto free_msg;
15026                 if (wakeup->rfkill_release &&
15027                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))
15028                         goto free_msg;
15029
15030                 if (wakeup->pattern_idx >= 0 &&
15031                     nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
15032                                 wakeup->pattern_idx))
15033                         goto free_msg;
15034
15035                 if (wakeup->tcp_match &&
15036                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH))
15037                         goto free_msg;
15038
15039                 if (wakeup->tcp_connlost &&
15040                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST))
15041                         goto free_msg;
15042
15043                 if (wakeup->tcp_nomoretokens &&
15044                     nla_put_flag(msg,
15045                                  NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS))
15046                         goto free_msg;
15047
15048                 if (wakeup->packet) {
15049                         u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211;
15050                         u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN;
15051
15052                         if (!wakeup->packet_80211) {
15053                                 pkt_attr =
15054                                         NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023;
15055                                 len_attr =
15056                                         NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN;
15057                         }
15058
15059                         if (wakeup->packet_len &&
15060                             nla_put_u32(msg, len_attr, wakeup->packet_len))
15061                                 goto free_msg;
15062
15063                         if (nla_put(msg, pkt_attr, wakeup->packet_present_len,
15064                                     wakeup->packet))
15065                                 goto free_msg;
15066                 }
15067
15068                 if (wakeup->net_detect &&
15069                     cfg80211_net_detect_results(msg, wakeup))
15070                                 goto free_msg;
15071
15072                 nla_nest_end(msg, reasons);
15073         }
15074
15075         genlmsg_end(msg, hdr);
15076
15077         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15078                                 NL80211_MCGRP_MLME, gfp);
15079         return;
15080
15081  free_msg:
15082         nlmsg_free(msg);
15083 }
15084 EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup);
15085 #endif
15086
15087 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer,
15088                                 enum nl80211_tdls_operation oper,
15089                                 u16 reason_code, gfp_t gfp)
15090 {
15091         struct wireless_dev *wdev = dev->ieee80211_ptr;
15092         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
15093         struct sk_buff *msg;
15094         void *hdr;
15095
15096         trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper,
15097                                          reason_code);
15098
15099         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15100         if (!msg)
15101                 return;
15102
15103         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER);
15104         if (!hdr) {
15105                 nlmsg_free(msg);
15106                 return;
15107         }
15108
15109         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15110             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
15111             nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) ||
15112             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) ||
15113             (reason_code > 0 &&
15114              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code)))
15115                 goto nla_put_failure;
15116
15117         genlmsg_end(msg, hdr);
15118
15119         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15120                                 NL80211_MCGRP_MLME, gfp);
15121         return;
15122
15123  nla_put_failure:
15124         genlmsg_cancel(msg, hdr);
15125         nlmsg_free(msg);
15126 }
15127 EXPORT_SYMBOL(cfg80211_tdls_oper_request);
15128
15129 static int nl80211_netlink_notify(struct notifier_block * nb,
15130                                   unsigned long state,
15131                                   void *_notify)
15132 {
15133         struct netlink_notify *notify = _notify;
15134         struct cfg80211_registered_device *rdev;
15135         struct wireless_dev *wdev;
15136         struct cfg80211_beacon_registration *reg, *tmp;
15137
15138         if (state != NETLINK_URELEASE || notify->protocol != NETLINK_GENERIC)
15139                 return NOTIFY_DONE;
15140
15141         rcu_read_lock();
15142
15143         list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
15144                 struct cfg80211_sched_scan_request *sched_scan_req;
15145
15146                 list_for_each_entry_rcu(sched_scan_req,
15147                                         &rdev->sched_scan_req_list,
15148                                         list) {
15149                         if (sched_scan_req->owner_nlportid == notify->portid) {
15150                                 sched_scan_req->nl_owner_dead = true;
15151                                 schedule_work(&rdev->sched_scan_stop_wk);
15152                         }
15153                 }
15154
15155                 list_for_each_entry_rcu(wdev, &rdev->wiphy.wdev_list, list) {
15156                         cfg80211_mlme_unregister_socket(wdev, notify->portid);
15157
15158                         if (wdev->owner_nlportid == notify->portid) {
15159                                 wdev->nl_owner_dead = true;
15160                                 schedule_work(&rdev->destroy_work);
15161                         } else if (wdev->conn_owner_nlportid == notify->portid) {
15162                                 schedule_work(&wdev->disconnect_wk);
15163                         }
15164                 }
15165
15166                 spin_lock_bh(&rdev->beacon_registrations_lock);
15167                 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations,
15168                                          list) {
15169                         if (reg->nlportid == notify->portid) {
15170                                 list_del(&reg->list);
15171                                 kfree(reg);
15172                                 break;
15173                         }
15174                 }
15175                 spin_unlock_bh(&rdev->beacon_registrations_lock);
15176         }
15177
15178         rcu_read_unlock();
15179
15180         /*
15181          * It is possible that the user space process that is controlling the
15182          * indoor setting disappeared, so notify the regulatory core.
15183          */
15184         regulatory_netlink_notify(notify->portid);
15185         return NOTIFY_OK;
15186 }
15187
15188 static struct notifier_block nl80211_netlink_notifier = {
15189         .notifier_call = nl80211_netlink_notify,
15190 };
15191
15192 void cfg80211_ft_event(struct net_device *netdev,
15193                        struct cfg80211_ft_event_params *ft_event)
15194 {
15195         struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
15196         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15197         struct sk_buff *msg;
15198         void *hdr;
15199
15200         trace_cfg80211_ft_event(wiphy, netdev, ft_event);
15201
15202         if (!ft_event->target_ap)
15203                 return;
15204
15205         msg = nlmsg_new(100 + ft_event->ric_ies_len, GFP_KERNEL);
15206         if (!msg)
15207                 return;
15208
15209         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT);
15210         if (!hdr)
15211                 goto out;
15212
15213         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15214             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15215             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap))
15216                 goto out;
15217
15218         if (ft_event->ies &&
15219             nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies))
15220                 goto out;
15221         if (ft_event->ric_ies &&
15222             nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len,
15223                     ft_event->ric_ies))
15224                 goto out;
15225
15226         genlmsg_end(msg, hdr);
15227
15228         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15229                                 NL80211_MCGRP_MLME, GFP_KERNEL);
15230         return;
15231  out:
15232         nlmsg_free(msg);
15233 }
15234 EXPORT_SYMBOL(cfg80211_ft_event);
15235
15236 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp)
15237 {
15238         struct cfg80211_registered_device *rdev;
15239         struct sk_buff *msg;
15240         void *hdr;
15241         u32 nlportid;
15242
15243         rdev = wiphy_to_rdev(wdev->wiphy);
15244         if (!rdev->crit_proto_nlportid)
15245                 return;
15246
15247         nlportid = rdev->crit_proto_nlportid;
15248         rdev->crit_proto_nlportid = 0;
15249
15250         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15251         if (!msg)
15252                 return;
15253
15254         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP);
15255         if (!hdr)
15256                 goto nla_put_failure;
15257
15258         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15259             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
15260                               NL80211_ATTR_PAD))
15261                 goto nla_put_failure;
15262
15263         genlmsg_end(msg, hdr);
15264
15265         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
15266         return;
15267
15268  nla_put_failure:
15269         if (hdr)
15270                 genlmsg_cancel(msg, hdr);
15271         nlmsg_free(msg);
15272 }
15273 EXPORT_SYMBOL(cfg80211_crit_proto_stopped);
15274
15275 void nl80211_send_ap_stopped(struct wireless_dev *wdev)
15276 {
15277         struct wiphy *wiphy = wdev->wiphy;
15278         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15279         struct sk_buff *msg;
15280         void *hdr;
15281
15282         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15283         if (!msg)
15284                 return;
15285
15286         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STOP_AP);
15287         if (!hdr)
15288                 goto out;
15289
15290         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15291             nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex) ||
15292             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
15293                               NL80211_ATTR_PAD))
15294                 goto out;
15295
15296         genlmsg_end(msg, hdr);
15297
15298         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(wiphy), msg, 0,
15299                                 NL80211_MCGRP_MLME, GFP_KERNEL);
15300         return;
15301  out:
15302         nlmsg_free(msg);
15303 }
15304
15305 /* initialisation/exit functions */
15306
15307 int __init nl80211_init(void)
15308 {
15309         int err;
15310
15311         err = genl_register_family(&nl80211_fam);
15312         if (err)
15313                 return err;
15314
15315         err = netlink_register_notifier(&nl80211_netlink_notifier);
15316         if (err)
15317                 goto err_out;
15318
15319         return 0;
15320  err_out:
15321         genl_unregister_family(&nl80211_fam);
15322         return err;
15323 }
15324
15325 void nl80211_exit(void)
15326 {
15327         netlink_unregister_notifier(&nl80211_netlink_notifier);
15328         genl_unregister_family(&nl80211_fam);
15329 }